Update version

As reported by @Rasmusfk in #2455, allow for a longer
clock stretch period during probes.

.github/workflows/pull-request.yml

@@ -6,35 +6,23 @@ name: Arduino-Pico CI
 on:
   pull_request:
 
-env:
-  TRAVIS_BUILD_DIR: ${{ github.workspace }}
-  TRAVIS_TAG: ${{ github.ref }}
-
-
 jobs:
 
-# Me no spell so good
-  code-spell:
-    name: Check spelling
+# Consistent style, spelling
+  astyle:
+    name: Spelling, Style, Boards, Package
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
-        submodules: true
+        submodules: false
     - name: Run codespell
       uses: codespell-project/actions-codespell@master
       with:
-        skip: ./ArduinoCore-API,./libraries/ESP8266SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api,./libraries/FreeRTOS,./tools/libbearssl/bearssl,./include,./libraries/WiFi/examples/BearSSL_Server,./ota/uzlib,./libraries/http-parser/lib,./libraries/WebServer/examples/HelloServerBearSSL/HelloServerBearSSL.ino,./libraries/HTTPUpdateServer/examples/SecureBearSSLUpdater/SecureBearSSLUpdater.ino,./.git
-        ignore_words_list: ser,dout
-
-# Consistent style
-  astyle:
-    name: Style, Boards, Package
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-      with:
-        submodules: false
+        skip: ./ArduinoCore-API,./libraries/ESP8266SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api,./libraries/FreeRTOS,./tools/libbearssl/bearssl,./include,./libraries/WiFi/examples/BearSSL_Server,./ota/uzlib,./libraries/http-parser/lib,./libraries/WebServer/examples/HelloServerBearSSL/HelloServerBearSSL.ino,./libraries/HTTPUpdateServer/examples/SecureBearSSLUpdater/SecureBearSSLUpdater.ino,./.git,./libraries/FatFS/lib/fatfs,./libraries/FatFS/src/diskio.h,./libraries/FatFS/src/ff.cpp,./libraries/FatFS/src/ffconf.h,./libraries/FatFS/src/ffsystem.cpp,./libraries/FatFS/src/ff.h,./libraries/lwIP_WINC1500/src/driver,./libraries/lwIP_WINC1500/src/common,./libraries/lwIP_WINC1500/src/bus_wrapper,./libraries/lwIP_WINC1500/src/spi_flash
+        ignore_words_list: ser,dout,shiftIn,acount
+    - name: Get submodules for following tests
+      run: git submodule update --init
     - name: Check package references
       run: |
         ./tests/ci/pkgrefs_test.sh
@@ -59,15 +47,15 @@ jobs:
       matrix:
         chunk: [0, 1, 2, 3, 4, 5]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Cache Linux toolchain
       id: cache-linux
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ./tools/dist
         key: ${{ runner.os }}-${{ hashFiles('package/package_pico_index.template.json', 'tests/common.sh') }}
@@ -82,20 +70,51 @@ jobs:
         cd ..
         bash ./tests/build.sh
 
+# Build all rp2350 examples on linux (core and Arduino IDE)
+  build-rp2350-linux:
+    name: Build RP2350 ${{ matrix.chunk }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        chunk: [0, 1, 2, 3, 4, 5]
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+    - uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    - name: Cache Linux toolchain
+      id: cache-linux
+      uses: actions/cache@v4
+      with:
+        path: ./tools/dist
+        key: ${{ runner.os }}-${{ hashFiles('package/package_pico_index.template.json', 'tests/common.sh') }}
+    - name: Build Sketches
+      env:
+        BUILD_PARITY: custom
+        mod: 6
+        rem: ${{ matrix.chunk }}
+      run: |
+        cd pico-sdk
+        git submodule update --init
+        cd ..
+        bash ./tests/build-rp2350.sh
+
 # Build TinyUSB examples, requires custom build command line
   build-tinyusb:
     name: Build TinyUSB Examples
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Cache Linux toolchain
       id: cache-linux
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ./tools/dist
         key: ${{ runner.os }}-${{ hashFiles('package/package_pico_index.template.json', 'tests/common.sh') }}
@@ -113,15 +132,15 @@ jobs:
     name: Windows
     runs-on: windows-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Cache Windows toolchain
       id: cache-windows
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ./tools/dist
         key: ${{ runner.os }}-${{ hashFiles('package/package_pico_index.template.json', 'tests/common.sh') }}
@@ -144,17 +163,20 @@ jobs:
 # Single build under macOS to ensure the Mac toolchain is good.
   build-mac:
     name: Mac
-    runs-on: macOS-12
+    strategy:
+      matrix:
+        os: [macOS-12, macOS-14]
+    runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Cache Mac toolchain
       id: cache-mac
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ./tools/dist
         key: ${{ runner.os }}-${{ hashFiles('package/package_pico_index.template.json', 'tests/common.sh') }}
@@ -165,17 +187,23 @@ jobs:
         mod: 500
         rem: 1
       run: |
+        brew update
+        brew install bash
+        /usr/bin/env bash --version
+        uname -a
         cd pico-sdk
         git submodule update --init
         cd ..
-        bash ./tests/build.sh
+        /usr/bin/env bash ./tests/build.sh
+        ./system/picotool/picotool version
+        otool -L ./system/picotool/picotool
 
 # Build a few examples with PlatformIO to test if integration works
   build-platformio:
     name: Build PlatformIO Examples
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: 'true'
     - name: Initialize needed submodules
@@ -186,19 +214,19 @@ jobs:
         git submodule update --init
         cd ../..
     - name: Cache pip
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
         restore-keys: |
           ${{ runner.os }}-pip-
     - name: Cache PlatformIO
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.platformio
         key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Install PlatformIO
@@ -207,8 +235,9 @@ jobs:
         pip install --upgrade platformio
         pio pkg install --global --platform https://github.com/maxgerhardt/platform-raspberrypi.git
         pio pkg install --global --tool symlink://.
+        cp -f /home/runner/work/arduino-pico/arduino-pico/tools/json/*.json /home/runner/.platformio/platforms/raspberrypi/boards/.
     - name: Build Multicore Example
-      run: pio ci --board=rpipico --board=adafruit_feather -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" libraries/rp2040/examples/Multicore/Multicore.ino
+      run: pio ci -v --board=rpipico --board=rpipico2 --board=adafruit_feather -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" libraries/rp2040/examples/Multicore/Multicore.ino
     - name: Build Fade Example
       run: pio ci --board=rpipico --board=adafruit_feather -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" libraries/rp2040/examples/Fade/Fade.ino
     - name: Build TinyUSB Example
@@ -219,3 +248,55 @@ jobs:
       run: pio ci --board=rpipicow -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" libraries/ArduinoOTA/examples/SignedOTA/SignedOTA.ino
     - name: Build Bluetooth Example
       run: pio ci --board=rpipicow -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" -O "build_flags=-DPIO_FRAMEWORK_ARDUINO_ENABLE_BLUETOOTH" libraries/MouseBLE/examples/BLECircle/BLECircle.ino
+
+# Build every variant using PIO for simplicity
+  build-variants:
+    name: Build Every Variant ${{ matrix.chunk }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        chunk: [0, 1]
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: 'true'
+    - name: Initialize needed submodules
+      run: |
+        cd pico-sdk
+        git submodule update --init
+        cd ../libraries/Adafruit_TinyUSB_Arduino
+        git submodule update --init
+        cd ../..
+    - name: Cache pip
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    - name: Cache PlatformIO
+      uses: actions/cache@v4
+      with:
+        path: ~/.platformio
+        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    - name: Install PlatformIO
+      run: |
+        python -m pip install --upgrade pip
+        pip install --upgrade platformio
+        pio pkg install --global --platform https://github.com/maxgerhardt/platform-raspberrypi.git
+        pio pkg install --global --tool symlink://.
+        cp -f /home/runner/work/arduino-pico/arduino-pico/tools/json/*.json /home/runner/.platformio/platforms/raspberrypi/boards/.
+    - name: Build Every Variant
+      run: |
+        cnt=0
+        for b in $(cut -f1 -d. /home/runner/work/arduino-pico/arduino-pico/boards.txt | sed 's/#.*//' | sed 's/^menu$//' | sort -u); do
+          cnt=$((cnt + 1))
+          rem=$((cnt % 2))
+          if [ $rem == ${{ matrix.chunk }} ]; then
+            pio ci --board=$b -O "platform_packages=framework-arduinopico@symlink:///home/runner/work/arduino-pico/arduino-pico" libraries/rp2040/examples/Bootsel/Bootsel.ino
+          fi
+        done

.github/workflows/release-to-publish.yml

@@ -9,21 +9,21 @@ jobs:
     name: Update master JSON file
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Cache pip
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
         restore-keys: |
           ${{ runner.os }}-pip-
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'          
 #     - name: Cache PlatformIO
-#       uses: actions/cache@v3
+#       uses: actions/cache@v4
 #       with:
 #         path: ~/.platformio
 #         key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
@@ -33,7 +33,6 @@ jobs:
 #         pip install --upgrade platformio
     - name: Deploy updated JSON
       env:
-        TRAVIS_BUILD_DIR: ${{ github.workspace }}
         BUILD_TYPE: package
         CI_GITHUB_API_KEY: ${{ secrets.GITHUB_TOKEN }}
         PLATFORMIO_AUTH_TOKEN: ${{ secrets.PLATFORMIO_AUTH_TOKEN }}

.github/workflows/tag-to-draft-release.yml

@@ -15,16 +15,15 @@ jobs:
     name: Package
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
         fetch-depth: 0
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.x'
     - name: Build package JSON
       env:
-        TRAVIS_BUILD_DIR: ${{ github.workspace }}
         BUILD_TYPE: package
         CI_GITHUB_API_KEY: ${{ secrets.GITHUB_TOKEN }}
       run: |

.gitmodules

@@ -37,3 +37,15 @@
 [submodule "libraries/http_parser/lib/http-parser"]
 	path = libraries/http-parser/lib/http-parser
 	url = https://github.com/nodejs/http-parser.git
+[submodule "libraries/FatFS/lib/SPIFTL"]
+	path = libraries/FatFS/lib/SPIFTL
+	url = https://github.com/earlephilhower/SPIFTL.git
+[submodule "libraries/AsyncUDP"]
+	path = libraries/AsyncUDP
+	url = https://github.com/earlephilhower/AsyncUDP.git
+[submodule "cores/rp2040/tlsf"]
+	path = lib/tlsf
+	url = https://github.com/earlephilhower/tlsf.git
+[submodule "libraries/ESPHost"]
+	path = libraries/ESPHost
+	url = https://github.com/Networking-for-Arduino/ESPHost.git

.readthedocs.yaml

@@ -0,0 +1,41 @@
+# Read the Docs configuration file for Sphinx projects
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the OS, Python version and other tools you might need
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+  jobs:
+    post_create_environment:
+      - python -m pip install sphinx_rtd_theme
+    # You can also specify other tool versions:
+    # nodejs: "20"
+    # rust: "1.70"
+    # golang: "1.20"
+
+
+# Build documentation in the "docs/" directory with Sphinx
+
+sphinx:
+  configuration: docs/conf.py
+  # You can configure Sphinx to use a different builder, for instance use the dirhtml builder for simpler URLs
+  # builder: "dirhtml"
+  # Fail on all warnings to avoid broken references
+  # fail_on_warning: true
+
+# Optionally build your docs in additional formats such as PDF and ePub
+# formats:
+#   - pdf
+#   - epub
+
+# Optional but recommended, declare the Python requirements required
+# to build your documentation
+# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+# python:
+#   install:
+#     - requirements: docs/requirements.txt

README.md

@@ -2,9 +2,9 @@
 [![Release](https://img.shields.io/github/v/release/earlephilhower/arduino-pico?style=plastic)](https://github.com/earlephilhower/arduino-pico/releases)
 [![Gitter](https://img.shields.io/gitter/room/earlephilhower/arduino-pico?style=plastic)](https://gitter.im/arduino-pico/community)
 
-Raspberry Pi Pico Arduino core, for all RP2040 boards
+Raspberry Pi Pico Arduino core, for all RP2040 and RP2350 boards
 
-This is a port of the RP2040 (Raspberry Pi Pico processor) to the Arduino ecosystem. It uses the bare Raspberry Pi Pico SDK and a custom GCC 10.3/Newlib 4.0 toolchain.
+This is a port of Arduino to the RP2040 (Raspberry Pi Pico processor) and RP2350 (Raspberry Pi Pico 2 processor). It uses the bare Raspberry Pi Pico SDK and a custom GCC 12.3/Newlib 4.0 toolchain.
 
 # Documentation
 See https://arduino-pico.readthedocs.io/en/latest/ along with the examples for more detailed usage information.
@@ -15,25 +15,40 @@ Read the [Contributing Guide](https://github.com/earlephilhower/arduino-pico/blo
 # Supported Boards
 * Raspberry Pi Pico
 * Raspberry Pi Pico W
+* Raspberry Pi Pico 2
 * 0xCB Helios
 * Adafruit Feather RP2040
 * Adafruit Feather RP2040 SCORPIO
 * Adafruit ItsyBitsy RP2040
 * Adafruit KB2040
 * Adafruit Macropad RP2040
+* Adafruit Metro RP2040
 * Adafruit QTPy RP2040
 * Adafruit STEMMA Friend RP2040
 * Adafruit Trinkey RP2040 QT
+* Amken Bunny 
+* Amken Revelop 
+* Amken Revelop Plus 
+* Amken Revelop eS
 * Arduino Nano RP2040 Connect
 * ArtronShop RP2 Nano
+* Breadstick Raspberry
 * BridgeTek IDM2040-7A
+* BridgeTek IDM2040-43A
+* Cytron IRIV IO Controller
 * Cytron Maker Pi RP2040
 * Cytron Maker Nano RP2040
-* DatanoiseTV PicoADK+
+* Cytron Maker Uno RP2040
+* Cytron Motion 2350 Pro
+* Datanoise PicoADK v1
+* Datanoise PicoADK v2 (RP2350)
+* Degz Suibo RP2040
 * DeRuiLab FlyBoard2040 Core
 * DFRobot Beetle RP2040
 * ElectronicCats Hunter Cat NFC
+* EVN Alpha
 * ExtremeElectronics RC2040
+* GroundStudio Marble Pico
 * Invector Labs Challenger RP2040 WiFi
 * Invector Labs Challenger RP2040 WiFi/BLE
 * Invector Labs Challenger RP2040 WiFi6/BLE
@@ -43,16 +58,35 @@ Read the [Contributing Guide](https://github.com/earlephilhower/arduino-pico/blo
 * Invector Labs Challenger RP2040 SubGHz
 * Invector Labs Challenger RP2040 SD/RTC
 * Invector Labs Challenger RP2040 UWB
+* Invector Labs Challenger RP2350 BConnect
+* Invector Labs Challenger RP2350 WiFi/BLE
 * Invector Labs RPICO32
 * Melopero Cookie RP2040
 * Melopero Shake RP2040
+* METE HOCA Akana R1
 * Neko Systems BL2040 Mini
+* Olimex RP2040-Pico30
+* Newsan Archi
 * nullbits Bit-C PRO
 * Pimoroni PGA2040
+* Pimoroni Pico Plus 2
+* Pimoroni Plasma2040
+* Pimoroni Tiny2040
+* Pimoroni Tiny2350
+* Pintronix PinMax
+* RAKwireless RAK11300
+* Redscorp RP2040-Eins
+* Redscorp RP2040-ProMini
+* Sea-Picro
 * Seeed Indicator RP2040
 * Seeed XIAO RP2040
+* Silicognition RP2040-Shim
 * Solder Party RP2040 Stamp
+* Solder Party RP2350 Stamp
+* Solder Party RP2350 Stamp XL
+* SparkFun MicroMod RP2040
 * SparkFun ProMicro RP2040
+* SparkFun ProMicro RP2350
 * SparkFun Thing Plus RP2040
 * uPesy RP2040 DevKit
 * VCC-GND YD-RP2040
@@ -62,10 +96,44 @@ Read the [Contributing Guide](https://github.com/earlephilhower/arduino-pico/blo
 * Waveshare RP2040 Plus
 * Waveshare RP2040 LCD 0.96
 * Waveshare RP2040 LCD 1.28
+* Waveshare RP2040 Matrix
+* Waveshare RP2040 PiZero
 * WIZnet W5100S-EVB-Pico
 * WIZnet W5500-EVB-Pico
 * WIZnet WizFi360-EVB-Pico
-* Generic (configurable flash, I/O pins)
+* Generic RP2040 (configurable flash, I/O pins)
+* Generic RP2350 (configurable flash, I/O pins)
+
+# Features
+* Adafruit TinyUSB Arduino (USB mouse, keyboard, flash drive, generic HID, CDC Serial, MIDI, WebUSB, others)
+* Bluetooth on the PicoW (Classic and BLE) with Keyboard, Mouse, Joystick, and Virtual Serial
+* Bluetooth Classic and BLE HID master mode (connect to BT keyboard, mouse, or joystick)
+* Generic Arduino USB Serial, Keyboard, Joystick, and Mouse emulation
+* WiFi (Pico W, ESP32-based ESPHost, Atmel WINC1500)
+* Ethernet (Wired WizNet W6100, WizNet W5500, WizNet W5100, ENC28J60)
+* HTTP client and server (WebServer)
+* SSL/TLS/HTTPS
+* Over-the-Air (OTA) upgrades
+* Filesystems (LittleFS and SD/SDFS)
+* Multicore support (setup1() and loop1())
+* FreeRTOS SMP support
+* Overclocking and underclocking from the menus
+* digitalWrite/Read, shiftIn/Out, tone, analogWrite(PWM)/Read, temperature
+* Analog stereo audio in using DMA and the built-in ADC
+* Analog stereo audio out using PWM hardware
+* Bluetooth A2DP audio source (output) and sink (input) on the PicoW
+* USB drive mode for data loggers (SingleFileDrive, FatFSUSB)
+* Peripherals:  SPI master/slave, Wire(I2C) master/slave, dual UART, emulated EEPROM, I2S audio input/output, Servo
+* printf (i.e. debug) output over USB serial
+* Transparent use of PSRAM globals and heap (RP2350 only)
+
+The RP2040 PIO state machines (SMs) are used to generate jitter-free:
+* Servos
+* Tones
+* I2S Input
+* I2S Output
+* Software UARTs (Serial ports)
+
 
 # Installing via Arduino Boards Manager
 ## Windows-specific Notes
@@ -130,11 +198,6 @@ cd ../tools
 python3 ./get.py
 `````
 
-# Installing both Arduino and CMake
-Tom's Hardware presented a very nice writeup on installing `arduino-pico` on both Windows and Linux, available at https://www.tomshardware.com/how-to/program-raspberry-pi-pico-with-arduino-ide
-
-If you follow Les' step-by-step you will also have a fully functional `CMake`-based environment to build Pico apps on if you outgrow the Arduino ecosystem.
-
 # Uploading Sketches
 To upload your first sketch, you will need to hold the BOOTSEL button down while plugging in the Pico to your computer.
 Then hit the upload button and the sketch should be transferred and start to run.
@@ -155,83 +218,30 @@ To install, follow the directions in
 * https://github.com/earlephilhower/arduino-pico-littlefs-plugin/blob/master/README.md
 
 For detailed usage information, please check the ESP8266 repo documentation (ignore SPIFFS related notes) available at
-* https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html
+* https://arduino-pico.readthedocs.io/en/latest/fs.html
 
-# Uploading Sketches with Picoprobe
+# Uploading Sketches with Picoprobe/Debugprobe
 If you have built a Raspberry Pi Picoprobe, you can use OpenOCD to handle your sketch uploads and for debugging with GDB.
 
 Under Windows a local admin user should be able to access the Picoprobe port automatically, but under Linux `udev` must be told about the device and to allow normal users access.
 
 To set up user-level access to Picoprobes on Ubuntu (and other OSes which use `udev`):
 ````
-echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="0004", GROUP="users", MODE="0666"' | sudo tee -a /etc/udev/rules.d/98-PicoProbe.rules
+echo 'SUBSYSTEM=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="0004", MODE="660", GROUP-"plugdev"' | sudo tee -a /etc/udev/rules.d/98-PicoProbe.rules
+echo 'SUBSYSTEM=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="000a", MODE="660", GROUP="plugdev"' | sudo tee -a /etc/udev/rules.d/98-PicoProbe.rules
+echo 'SUBSYSTEM=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="000f", MODE="660", GROUP="plugdev"' | sudo tee -a /etc/udev/rules.d/98-PicoProbe.rules
 sudo udevadm control --reload
+sudo udevadm trigger -w -s usb
 ````
 
-The first line creates a file with the USB vendor and ID of the Picoprobe and tells UDEV to give users full access to it.  The second causes `udev` to load this new rule.  Note that you will need to unplug and re-plug in your device the first time you create this file, to allow udev to make the device node properly.
+The first line creates a device file in `/dev` matching the USB vendor and product ID of the Picoprobe, and it enables global read+write permissions. The second line causes `udev` to load this new rule. The third line requests the kernel generate "device change" events that will cause our new `udev` rule to run. 
+
+If for some reason the device file does not appear, manually unplug and re-plug the USB connection and check again. The output from `dmesg` can reveal useful diagnostics if the device file remains absent.
 
 Once Picoprobe permissions are set up properly, then select the board "Raspberry Pi Pico (Picoprobe)" in the Tools menu and upload as normal.
 
-# Uploading Sketches with pico-debug
-[pico-debug](https://github.com/majbthrd/pico-debug/) differs from Picoprobe in that pico-debug is a virtual debug pod that runs side-by-side on the same RP2040 that you run your code on; so, you only need one RP2040 board instead of two.  pico-debug also differs from Picoprobe in that pico-debug is standards-based; it uses the CMSIS-DAP protocol, which means even software not specially written for the Raspberry Pi Pico can support it.  pico-debug uses OpenOCD to handle your sketch uploads, and debugging can be accomplished with CMSIS-DAP capable debuggers including GDB.
-
-Under Windows and macOS, any user should be able to access pico-debug automatically, but under Linux `udev` must be told about the device and to allow normal users access.
-
-To set up user-level access to all CMSIS-DAP adapters on Ubuntu (and other OSes which use `udev`):
-````
-echo 'ATTRS{product}=="*CMSIS-DAP*", MODE="664", GROUP="plugdev"' | sudo tee -a /etc/udev/rules.d/98-CMSIS-DAP.rules
-sudo udevadm control --reload
-````
-
-The first line creates a file that recognizes all CMSIS-DAP adapters and tells UDEV to give users full access to it.  The second causes `udev` to load this new rule.  Note that you will need to unplug and re-plug in your device the first time you create this file, to allow udev to make the device node properly.
-
-Once CMSIS-DAP permissions are set up properly, then select the board "Raspberry Pi Pico (pico-debug)" in the Tools menu.
-
-When first connecting the USB port to your PC, you must copy [pico-debug-gimmecache.uf2](https://github.com/majbthrd/pico-debug/releases/) to the Pi Pico to load pico-debug into RAM; after this, upload as normal.
-
-# Debugging with Picoprobe/pico-debug, OpenOCD, and GDB
-The installed tools include a version of OpenOCD (in the pqt-openocd directory) and GDB (in the pqt-gcc directory).  These may be used to run GDB in an interactive window as documented in the Pico Getting Started manuals from the Raspberry Pi Foundation.  For [pico-debug](https://github.com/majbthrd/pico-debug/), replace the raspberrypi-swd and picoprobe example OpenOCD arguments of "-f interface/raspberrypi-swd.cfg -f target/rp2040.cfg" or "-f interface/picoprobe.cfg -f target/rp2040.cfg" respectively in the Pico Getting Started manual with "-f board/pico-debug.cfg".
-
-# Features
-* Adafruit TinyUSB Arduino (USB mouse, keyboard, flash drive, generic HID, CDC Serial, MIDI, WebUSB, others)
-* Bluetooth on the PicoW (Classic and BLE) with Keyboard, Mouse, Joystick, and Virtual Serial
-* Generic Arduino USB Serial, Keyboard, Joystick, and Mouse emulation
-* WiFi (Pico W)
-* HTTP client and server (WebServer)
-* SSL/TLS/HTTPS
-* Over-the-Air (OTA) upgrades
-* Filesystems (LittleFS and SD/SDFS)
-* Multicore support (setup1() and loop1())
-* FreeRTOS SMP support
-* Overclocking and underclocking from the menus
-* digitalWrite/Read, shiftIn/Out, tone, analogWrite(PWM)/Read, temperature
-* Analog stereo audio in using DMA and the built-in ADC
-* Analog stereo audio out using PWM hardware
-* USB drive mode for data loggers (SingleFileDrive)
-* Peripherals:  SPI master, Wire(I2C) master/slave, dual UART, emulated EEPROM, I2S audio input, I2S audio output, Servo
-* printf (i.e. debug) output over USB serial
-
-The RP2040 PIO state machines (SMs) are used to generate jitter-free:
-* Servos
-* Tones
-* I2S Input
-* I2S Output
-* Software UARTs (Serial ports)
-
-# Tutorials from Across the Web
-Here are some links to coverage and additional tutorials for using `arduino-pico`
-* The File:: class is taken from the ESP8266.  See https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html
-* Arduino Support for the Pi Pico available! And how fast is the Pico? - https://youtu.be/-XHh17cuH5E
-* Pre-release Adafruit QT Py RP2040 - https://www.youtube.com/watch?v=sfC1msqXX0I
-* Adafruit Feather RP2040 running LCD + TMP117 - https://www.youtube.com/watch?v=fKDeqZiIwHg
-* Demonstration of Servos and I2C in Korean - https://cafe.naver.com/arduinoshield/1201
-* Home Assistant Pico W integration starter project using Arduino - https://github.com/daniloc/PicoW_HomeAssistant_Starter
-* Tutorials for the Raspberry Pi Pico / uPesy RP2040 DevKit board 
-    - English version: https://www.upesy.com/blogs/tutorials/best-tutorials-for-rpi-pi-pico-with-arduino-code
-    - French version: https://www.upesy.fr/blogs/tutorials/best-tutorials-for-rpi-pi-pico-with-arduino-code
-
-# Contributing
-If you want to contribute or have bugfixes, drop me a note at <earlephilhower@yahoo.com> or open an issue/PR here.
+# Debugging with Picoprobe, OpenOCD, and GDB
+The installed tools include a version of OpenOCD (in the pqt-openocd directory) and GDB (in the pqt-gcc directory).  These may be used to run GDB in an interactive window as documented in the Pico Getting Started manuals from the Raspberry Pi Foundation.  Use the command line `./system/openocd/bin/openocd -f ./lib/rp2040/picoprobe_cmsis_dap.tcl` or `./system/openocd/bin/openocd -f ./lib/rp2350/picoprobe_cmsis_dap.tcl` from the `git` installation directory.
 
 # Licensing and Credits
 * The [Arduino IDE and ArduinoCore-API](https://arduino.cc) are developed and maintained by the Arduino team. The IDE is licensed under GPL.
@@ -242,14 +252,17 @@ If you want to contribute or have bugfixes, drop me a note at <earlephilhower@ya
 * [UF2CONV.PY](https://github.com/microsoft/uf2) is by Microsoft Corporation and licensed under the MIT license.
 * Networking and filesystem code taken from the [ESP8266 Arduino Core](https://github.com/esp8266/Arduino) and licensed under the LGPL.
 * DHCP server for AP host mode from the [Micropython Project](https://micropython.org), distributed under the MIT License.
-* [FreeRTOS](https://freertos.org) is Copyright Amazon.com, Inc. or its affiliates, and distributed under the MIT license.
+* [FreeRTOS](https://freertos.org) is copyright Amazon.com, Inc. or its affiliates, and distributed under the MIT license.
 * [lwIP](https://savannah.nongnu.org/projects/lwip/) is (c) the Swedish Institute of Computer Science and licenced under the BSD license.
 * [BearSSL](https://bearssl.org) library written by Thomas Pornin, is distributed under the [MIT License](https://bearssl.org/#legal-details).
 * [UZLib](https://github.com/pfalcon/uzlib) is copyright (c) 2003 Joergen Ibsen and distributed under the zlib license.
 * [LEAmDNS](https://github.com/LaborEtArs/ESP8266mDNS) is copyright multiple authors and distributed under the MIT license.
 * [http-parser](https://github.com/nodejs/http-parser) is copyright Joyent, Inc. and other Node contributors.
-* WebServer code modified from the [ESP32 WebServer](https://github.com/espressif/arduino-esp32/tree/master/libraries/WebServer) and is copyright (c) 2015 Ivan Grokhotkov and others
-
+* WebServer code modified from the [ESP32 WebServer](https://github.com/espressif/arduino-esp32/tree/master/libraries/WebServer) and is copyright (c) 2015 Ivan Grokhotkov and others.
+* [Xoshiro-cpp](https://github.com/Reputeless/Xoshiro-cpp) is copyright (c) 2020 Ryo Suzuki and distributed under the MIT license.
+* [FatFS low-level filesystem](http://elm-chan.org/fsw/ff/) code is Copyright (C) 2024, ChaN, all rights reserved.
+* [TLSF memory manager for PSRAM from Espressif fork](https://github.com/espressif/tlsf) of [original](https://github.com/mattconte/tlsf) by Matthew Conte is copyright Matthew Conte and licensed under the MIT license.
+* [ESPHost library](https://github.com/Networking-for-Arduino/ESPHost) is LGPL licensed by its maintainers.
 
 -Earle F. Philhower, III  
  earlephilhower@yahoo.com

boot2/rp2040/boot2_W25Q32JVxQ_4_padded_checksum.S

@@ -0,0 +1,23 @@
+// Padded and checksummed version of: generated\Winbond\W25Q32JVxQ\boot2.bin
+
+.cpu cortex-m0plus
+.thumb
+
+.section .boot2, "ax"
+
+.byte 0xf7, 0xb5, 0x73, 0x46, 0x21, 0x22, 0x02, 0x25, 0x01, 0x93, 0x29, 0x4b, 0xc0, 0x24, 0x5a, 0x60
+.byte 0x9a, 0x68, 0x01, 0x26, 0xaa, 0x43, 0xda, 0x60, 0x9a, 0x60, 0x1a, 0x61, 0x5a, 0x61, 0x00, 0x23
+.byte 0x64, 0x05, 0xa3, 0x60, 0x04, 0x33, 0x63, 0x61, 0x22, 0x4b, 0x28, 0x00, 0x1e, 0x60, 0xe0, 0x23
+.byte 0xdb, 0x02, 0x23, 0x60, 0x35, 0x23, 0xa6, 0x60, 0x23, 0x66, 0x23, 0x66, 0x00, 0xf0, 0x4a, 0xf8
+.byte 0xc0, 0xb2, 0xa8, 0x42, 0x12, 0xd0, 0x06, 0x23, 0x30, 0x00, 0x23, 0x66, 0x00, 0xf0, 0x42, 0xf8
+.byte 0x31, 0x23, 0x28, 0x00, 0x23, 0x66, 0x25, 0x66, 0x00, 0xf0, 0x3c, 0xf8, 0x03, 0x35, 0x25, 0x66
+.byte 0x02, 0x20, 0x25, 0x66, 0x00, 0xf0, 0x36, 0xf8, 0x30, 0x42, 0xf8, 0xd1, 0x00, 0x25, 0x12, 0x4b
+.byte 0xa5, 0x60, 0x12, 0x4f, 0x23, 0x60, 0x12, 0x4b, 0x65, 0x60, 0x01, 0x26, 0x3b, 0x60, 0xeb, 0x23
+.byte 0xa6, 0x60, 0x23, 0x66, 0x4b, 0x3b, 0x23, 0x66, 0x02, 0x20, 0x00, 0xf0, 0x23, 0xf8, 0x0d, 0x4b
+.byte 0xa5, 0x60, 0x3b, 0x60, 0xa6, 0x60, 0x01, 0x9b, 0xab, 0x42, 0x08, 0xd1, 0x0a, 0x4b, 0x0b, 0x4a
+.byte 0x13, 0x60, 0x1b, 0x68, 0x83, 0xf3, 0x08, 0x88, 0x09, 0x4b, 0x1b, 0x68, 0x18, 0x47, 0xf7, 0xbd
+.byte 0x00, 0x00, 0x02, 0x40, 0xf0, 0x00, 0x00, 0x18, 0x00, 0x03, 0x5f, 0x00, 0xf4, 0x00, 0x00, 0x18
+.byte 0x21, 0x22, 0x00, 0x00, 0x22, 0x20, 0x00, 0xa0, 0x00, 0x01, 0x00, 0x10, 0x08, 0xed, 0x00, 0xe0
+.byte 0x04, 0x01, 0x00, 0x10, 0xc0, 0x23, 0x02, 0x00, 0x04, 0x21, 0x5b, 0x05, 0x98, 0x6a, 0x08, 0x42
+.byte 0xfc, 0xd0, 0x01, 0x21, 0x98, 0x6a, 0x08, 0x42, 0xfc, 0xd1, 0x18, 0x6e, 0x01, 0x2a, 0x00, 0xd0
+.byte 0x18, 0x6e, 0x70, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x2d, 0x68, 0xca

boot2/rp2350/boot2_generic_03h_2_padded_checksum.S

@@ -0,0 +1,25 @@
+// Padded and checksummed version of: boot2_generic_03h.2.bin
+
+.cpu cortex-m0plus
+.thumb
+
+.section .boot2, "ax"
+
+.global __boot2_entry_point
+__boot2_entry_point:
+.byte 0x00, 0xb5, 0x05, 0x4b, 0x05, 0x48, 0xd8, 0x60, 0x4f, 0xf0, 0x03, 0x00, 0x58, 0x61, 0x4f, 0xf4
+.byte 0x80, 0x50, 0x18, 0x61, 0x00, 0xbd, 0x00, 0x00, 0x00, 0x00, 0x0d, 0x40, 0x02, 0x01, 0x00, 0x40
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

boot2/rp2350/boot2_generic_03h_4_padded_checksum.S

@@ -0,0 +1,25 @@
+// Padded and checksummed version of: boot2_generic_03h.4.bin
+
+.cpu cortex-m0plus
+.thumb
+
+.section .boot2, "ax"
+
+.global __boot2_entry_point
+__boot2_entry_point:
+.byte 0x00, 0xb5, 0x05, 0x4b, 0x05, 0x48, 0xd8, 0x60, 0x4f, 0xf0, 0x03, 0x00, 0x58, 0x61, 0x4f, 0xf4
+.byte 0x80, 0x50, 0x18, 0x61, 0x00, 0xbd, 0x00, 0x00, 0x00, 0x00, 0x0d, 0x40, 0x04, 0x01, 0x00, 0x40
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

boot2/rp2350/boot2_w25q080_2_padded_checksum.S

@@ -0,0 +1,25 @@
+// Padded and checksummed version of: boot2_w25q080.2.bin
+
+.cpu cortex-m0plus
+.thumb
+
+.section .boot2, "ax"
+
+.global __boot2_entry_point
+__boot2_entry_point:
+.byte 0x00, 0xb5, 0x24, 0x4b, 0x21, 0x20, 0x58, 0x60, 0x13, 0xf5, 0x40, 0x53, 0x02, 0x20, 0x98, 0x60
+.byte 0xd8, 0x60, 0x18, 0x61, 0x58, 0x61, 0x13, 0xf5, 0x0d, 0x23, 0x1f, 0x49, 0x19, 0x60, 0x18, 0x68
+.byte 0x10, 0xf0, 0x02, 0x0f, 0xfb, 0xd1, 0x35, 0x20, 0x00, 0xf0, 0x2c, 0xf8, 0x02, 0x28, 0x14, 0xd0
+.byte 0x06, 0x20, 0x58, 0x60, 0x00, 0xf0, 0x22, 0xf8, 0x98, 0x68, 0x01, 0x20, 0x58, 0x60, 0x00, 0x20
+.byte 0x58, 0x60, 0x02, 0x20, 0x58, 0x60, 0x00, 0xf0, 0x19, 0xf8, 0x98, 0x68, 0x98, 0x68, 0x98, 0x68
+.byte 0x05, 0x20, 0x00, 0xf0, 0x17, 0xf8, 0x40, 0x08, 0xfa, 0xd2, 0x31, 0xf0, 0x01, 0x01, 0x19, 0x60
+.byte 0x0e, 0x48, 0xd8, 0x60, 0x4a, 0xf2, 0xeb, 0x00, 0x58, 0x61, 0x0d, 0x48, 0x18, 0x61, 0x4f, 0xf0
+.byte 0xa0, 0x51, 0x09, 0x78, 0x20, 0xf4, 0x80, 0x50, 0x18, 0x61, 0x00, 0xbd, 0x18, 0x68, 0x80, 0x08
+.byte 0xfc, 0xd2, 0x70, 0x47, 0x00, 0xb5, 0x58, 0x60, 0x58, 0x60, 0xff, 0xf7, 0xf7, 0xff, 0x98, 0x68
+.byte 0x98, 0x68, 0x00, 0xbd, 0x00, 0x00, 0x04, 0x40, 0x41, 0x00, 0x80, 0x07, 0x02, 0x02, 0x00, 0x40
+.byte 0xa8, 0x92, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

boot2/rp2350/boot2_w25q080_4_padded_checksum.S

@@ -0,0 +1,25 @@
+// Padded and checksummed version of: boot2_w25q080.4.bin
+
+.cpu cortex-m0plus
+.thumb
+
+.section .boot2, "ax"
+
+.global __boot2_entry_point
+__boot2_entry_point:
+.byte 0x00, 0xb5, 0x24, 0x4b, 0x21, 0x20, 0x58, 0x60, 0x13, 0xf5, 0x40, 0x53, 0x02, 0x20, 0x98, 0x60
+.byte 0xd8, 0x60, 0x18, 0x61, 0x58, 0x61, 0x13, 0xf5, 0x0d, 0x23, 0x1f, 0x49, 0x19, 0x60, 0x18, 0x68
+.byte 0x10, 0xf0, 0x02, 0x0f, 0xfb, 0xd1, 0x35, 0x20, 0x00, 0xf0, 0x2c, 0xf8, 0x02, 0x28, 0x14, 0xd0
+.byte 0x06, 0x20, 0x58, 0x60, 0x00, 0xf0, 0x22, 0xf8, 0x98, 0x68, 0x01, 0x20, 0x58, 0x60, 0x00, 0x20
+.byte 0x58, 0x60, 0x02, 0x20, 0x58, 0x60, 0x00, 0xf0, 0x19, 0xf8, 0x98, 0x68, 0x98, 0x68, 0x98, 0x68
+.byte 0x05, 0x20, 0x00, 0xf0, 0x17, 0xf8, 0x40, 0x08, 0xfa, 0xd2, 0x31, 0xf0, 0x01, 0x01, 0x19, 0x60
+.byte 0x0e, 0x48, 0xd8, 0x60, 0x4a, 0xf2, 0xeb, 0x00, 0x58, 0x61, 0x0d, 0x48, 0x18, 0x61, 0x4f, 0xf0
+.byte 0xa0, 0x51, 0x09, 0x78, 0x20, 0xf4, 0x80, 0x50, 0x18, 0x61, 0x00, 0xbd, 0x18, 0x68, 0x80, 0x08
+.byte 0xfc, 0xd2, 0x70, 0x47, 0x00, 0xb5, 0x58, 0x60, 0x58, 0x60, 0xff, 0xf7, 0xf7, 0xff, 0x98, 0x68
+.byte 0x98, 0x68, 0x00, 0xbd, 0x00, 0x00, 0x04, 0x40, 0x41, 0x00, 0x80, 0x07, 0x04, 0x02, 0x00, 0x40
+.byte 0xa8, 0x92, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

cores/rp2040/Arduino.h

@@ -30,7 +30,6 @@
 #include <pins_arduino.h>
 #include <hardware/gpio.h> // Required for the port*Register macros
 #include "debug_internal.h"
-#include <RP2040.h> // CMSIS
 
 // Try and make the best of the old Arduino abs() macro.  When in C++, use
 // the sane std::abs() call, but for C code use their macro since stdlib abs()
@@ -59,15 +58,24 @@ extern "C" {
 void interrupts();
 void noInterrupts();
 
+// Only implemented on some RP2350 boards, not the OG Pico 2
+#ifdef RP2350_PSRAM_CS
+void *pmalloc(size_t size);
+void *pcalloc(size_t count, size_t size);
+#else
+[[deprecated("This chip does not have PSRAM, pmalloc will always fail")]] void *pmalloc(size_t size);
+[[deprecated("This chip does not have PSRAM, pcalloc will always fail")]] void *pcalloc(size_t count, size_t size);
+#endif
+
 // AVR compatibility macros...naughty and accesses the HW directly
 #define digitalPinToPort(pin)       (0)
 #define digitalPinToBitMask(pin)    (1UL << (pin))
 #define digitalPinToTimer(pin)      (0)
 #define digitalPinToInterrupt(pin)  (pin)
 #define NOT_AN_INTERRUPT            (-1)
-#define portOutputRegister(port)    ((volatile uint32_t*) sio_hw->gpio_out)
-#define portInputRegister(port)     ((volatile uint32_t*) sio_hw->gpio_in)
-#define portModeRegister(port)      ((volatile uint32_t*) sio_hw->gpio_oe)
+#define portOutputRegister(port)    ((volatile uint32_t *)&(sio_hw->gpio_out))
+#define portInputRegister(port)     ((volatile uint32_t *)&(sio_hw->gpio_in))
+#define portModeRegister(port)      ((volatile uint32_t *)&(sio_hw->gpio_oe))
 #define digitalWriteFast(pin, val)  (val ? sio_hw->gpio_set = (1 << pin) : sio_hw->gpio_clr = (1 << pin))
 #define digitalReadFast(pin)        ((1 << pin) & sio_hw->gpio_in)
 #define sei() interrupts()
@@ -125,8 +133,8 @@ extern const String emptyString;
 // Template which will evaluate at *compile time* to a single 32b number
 // with the specified bits set.
 template <size_t N>
-constexpr uint32_t __bitset(const int (&a)[N], size_t i = 0U) {
-    return i < N ? (1L << a[i]) | __bitset(a, i + 1) : 0;
+constexpr uint64_t __bitset(const int (&a)[N], size_t i = 0U) {
+    return i < N ? (1LL << a[i]) | __bitset(a, i + 1) : 0;
 }
 #endif
 
@@ -139,4 +147,14 @@ constexpr uint32_t __bitset(const int (&a)[N], size_t i = 0U) {
 #undef stdio_usb_init
 #define stdio_usb_init(...)  static_assert(0, "stdio_usb_init is not supported or needed. Either use Serial.printf() or set the debug port in the IDE to Serial/1/2 and use printf().  See https://github.com/earlephilhower/arduino-pico/issues/1433#issuecomment-1540354673 and https://github.com/earlephilhower/arduino-pico/issues/1433#issuecomment-1546783109")
 
+// PSRAM decorator
+#define PSRAM __attribute__((section("\".psram\"")))
 
+// General GPIO/ADC layout info
+#ifdef PICO_RP2350B
+#define __GPIOCNT 48
+#define __FIRSTANALOGGPIO 40
+#else
+#define __GPIOCNT 30
+#define __FIRSTANALOGGPIO 26
+#endif

cores/rp2040/BluetoothDebug.cpp

@@ -0,0 +1,87 @@
+/*
+    Enable BTStack debugging to a Print-able object
+
+    Copyright (c) 2023 Earle F. Philhower, III <earlephilhower@yahoo.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if defined(ENABLE_CLASSIC) || defined(ENABLE_BLE)
+#include <Arduino.h>
+#include <btstack.h>
+#include <hci_dump.h>
+
+static Print *_print;
+
+static void _log_packet(uint8_t packet_type, uint8_t in, uint8_t *packet, uint16_t len) {
+    if (!_print) {
+        return;
+    }
+    _print->printf("[BT @%lu] ", millis());
+
+    switch (packet_type) {
+    case HCI_COMMAND_DATA_PACKET:
+        _print->printf("CMD => ");
+        break;
+    case HCI_EVENT_PACKET:
+        _print->printf("EVT <= ");
+        break;
+    case HCI_ACL_DATA_PACKET:
+        _print->printf("ACL %s ", in ? "<=" : "=>");
+        break;
+    case HCI_SCO_DATA_PACKET:
+        _print->printf("SCO %s ", in ? "<=" : "=>");
+        break;
+    case HCI_ISO_DATA_PACKET:
+        _print->printf("ISO %s ", in ? "<=" : "=>");
+        break;
+    case LOG_MESSAGE_PACKET:
+        _print->printf("LOG -- %s\n", (char*) packet);
+        return;
+    default:
+        _print->printf("UNK(%x) %s ", packet_type, in ? "<=" : "=>");
+        break;
+    }
+
+    for (uint16_t i = 0; i < len; i++) {
+        _print->printf("%02X ", packet[i]);
+    }
+    _print->printf("\n");
+}
+
+static void _log_message(int log_level, const char * format, va_list argptr) {
+    (void)log_level;
+    char log_message_buffer[HCI_DUMP_MAX_MESSAGE_LEN];
+    if (!_print) {
+        return;
+    }
+    vsnprintf(log_message_buffer, sizeof(log_message_buffer), format, argptr);
+    _print->printf("[BT @%lu] LOG -- %s\n", millis(), log_message_buffer);
+}
+
+
+static const hci_dump_t hci_dump_instance = {
+    NULL,
+    _log_packet,
+    _log_message
+};
+
+
+void __EnableBluetoothDebug(Print &print) {
+    _print = &print;
+    hci_dump_init(&hci_dump_instance);
+}
+
+#endif

cores/rp2040/Bootsel.cpp

@@ -26,7 +26,9 @@ static bool __no_inline_not_in_flash_func(get_bootsel_button)() {
 
     // Must disable interrupts, as interrupt handlers may be in flash, and we
     // are about to temporarily disable flash access!
-    noInterrupts();
+    if (!__isFreeRTOS) {
+        noInterrupts();
+    }
     rp2040.idleOtherCore();
 
     // Set chip select to Hi-Z
@@ -39,7 +41,12 @@ static bool __no_inline_not_in_flash_func(get_bootsel_button)() {
 
     // The HI GPIO registers in SIO can observe and control the 6 QSPI pins.
     // Note the button pulls the pin *low* when pressed.
-    bool button_state = !(sio_hw->gpio_hi_in & (1u << CS_PIN_INDEX));
+#if PICO_RP2040
+#define CS_BIT (1u << 1)
+#else
+#define CS_BIT SIO_GPIO_HI_IN_QSPI_CSN_BITS
+#endif
+    bool button_state = !(sio_hw->gpio_hi_in & CS_BIT);
 
     // Need to restore the state of chip select, else we are going to have a
     // bad time when we return to code in flash!
@@ -48,7 +55,9 @@ static bool __no_inline_not_in_flash_func(get_bootsel_button)() {
                     IO_QSPI_GPIO_QSPI_SS_CTRL_OEOVER_BITS);
 
     rp2040.resumeOtherCore();
-    interrupts();
+    if (!__isFreeRTOS) {
+        interrupts();
+    }
 
     return button_state;
 }

cores/rp2040/FS.cpp

@@ -225,6 +225,21 @@ void File::setTimeCallback(time_t (*cb)(void)) {
     _timeCallback = cb;
 }
 
+bool File::stat(FSStat *st) {
+    if (!_p) {
+        return false;
+    }
+    size_t pos = position();
+    seek(0, SeekEnd);
+    st->size = position() - pos;
+    seek(pos, SeekSet);
+    st->blocksize = 0; // Not set here
+    st->ctime = getCreationTime();
+    st->atime = getLastWrite();
+    st->isDir = isDirectory();
+    return true;
+}
+
 File Dir::openFile(const char* mode) {
     if (!_impl) {
         return File();
@@ -366,13 +381,6 @@ bool FS::info(FSInfo& info) {
     return _impl->info(info);
 }
 
-bool FS::info64(FSInfo64& info) {
-    if (!_impl) {
-        return false;
-    }
-    return _impl->info64(info);
-}
-
 File FS::open(const String& path, const char* mode) {
     return open(path.c_str(), mode);
 }
@@ -462,6 +470,17 @@ bool FS::rename(const String& pathFrom, const String& pathTo) {
     return rename(pathFrom.c_str(), pathTo.c_str());
 }
 
+bool FS::stat(const char *path, FSStat *st) {
+    if (!_impl) {
+        return false;
+    }
+    return _impl->stat(path, st);
+}
+
+bool FS::stat(const String& path, FSStat *st) {
+    return stat(path.c_str(), st);
+}
+
 time_t FS::getCreationTime() {
     if (!_impl) {
         return 0;

cores/rp2040/FS.h

@@ -48,6 +48,14 @@ enum SeekMode {
     SeekEnd = 2
 };
 
+struct FSStat {
+    size_t size;
+    size_t blocksize;
+    time_t ctime;
+    time_t atime;
+    bool isDir;
+};
+
 class File : public Stream {
 public:
     File(FileImplPtr p = FileImplPtr(), FS *baseFS = nullptr) : _p(p), _fakeDir(nullptr), _baseFS(baseFS) {
@@ -119,6 +127,8 @@ public:
     time_t getCreationTime();
     void setTimeCallback(time_t (*cb)(void));
 
+    bool stat(FSStat *st);
+
 protected:
     FileImplPtr _p;
     time_t (*_timeCallback)(void) = nullptr;
@@ -152,18 +162,8 @@ protected:
     time_t (*_timeCallback)(void) = nullptr;
 };
 
-// Backwards compatible, <4GB filesystem usage
-struct FSInfo {
-    size_t totalBytes;
-    size_t usedBytes;
-    size_t blockSize;
-    size_t pageSize;
-    size_t maxOpenFiles;
-    size_t maxPathLength;
-};
-
 // Support > 4GB filesystems (SD, etc.)
-struct FSInfo64 {
+struct FSInfo {
     uint64_t totalBytes;
     uint64_t usedBytes;
     size_t blockSize;
@@ -172,7 +172,6 @@ struct FSInfo64 {
     size_t maxPathLength;
 };
 
-
 class FSConfig {
 public:
     static constexpr uint32_t FSId = 0x00000000;
@@ -201,7 +200,6 @@ public:
 
     bool format();
     bool info(FSInfo& info);
-    bool info64(FSInfo64& info);
 
     File open(const char* path, const char* mode);
     File open(const String& path, const char* mode);
@@ -224,6 +222,9 @@ public:
     bool rmdir(const char* path);
     bool rmdir(const String& path);
 
+    bool stat(const char *path, FSStat *st);
+    bool stat(const String& path, FSStat *st);
+
     // Low-level FS routines, not needed by most applications
     bool gc();
     bool check();

cores/rp2040/FSImpl.h

@@ -119,7 +119,6 @@ public:
     virtual void end() = 0;
     virtual bool format() = 0;
     virtual bool info(FSInfo& info) = 0;
-    virtual bool info64(FSInfo64& info) = 0;
     virtual FileImplPtr open(const char* path, OpenMode openMode, AccessMode accessMode) = 0;
     virtual bool exists(const char* path) = 0;
     virtual DirImplPtr openDir(const char* path) = 0;
@@ -127,6 +126,7 @@ public:
     virtual bool remove(const char* path) = 0;
     virtual bool mkdir(const char* path) = 0;
     virtual bool rmdir(const char* path) = 0;
+    virtual bool stat(const char *path, FSStat *st) = 0;
     virtual bool gc() {
         return true;    // May not be implemented in all file systems.
     }

cores/rp2040/PIOProgram.cpp

@@ -21,11 +21,21 @@
 #include <Arduino.h>
 #include "PIOProgram.h"
 #include <map>
+#include <hardware/claim.h>
 
-static std::map<const pio_program_t *, int> __pioMap[2];
+#if defined(PICO_RP2350)
+#define PIOS pio0, pio1, pio2
+#define PIOCNT 3
+#elif defined(PICO_RP2040)
+#define PIOS pio0, pio1
+#define PIOCNT 2
+#endif
+
+static std::map<const pio_program_t *, int> __pioMap[PIOCNT];
+static bool __pioAllocated[PIOCNT];
+static bool __pioHighGPIO[PIOCNT];
 auto_init_mutex(_pioMutex);
 
-
 PIOProgram::PIOProgram(const pio_program_t *pgm) {
     _pgm = pgm;
     _pio = nullptr;
@@ -40,16 +50,30 @@ PIOProgram::~PIOProgram() {
 }
 
 // Possibly load into a PIO and allocate a SM
-bool PIOProgram::prepare(PIO *pio, int *sm, int *offset) {
+bool PIOProgram::prepare(PIO *pio, int *sm, int *offset, int start, int cnt) {
     CoreMutex m(&_pioMutex);
-    PIO pi[2] = { pio0, pio1 };
+    PIO pi[PIOCNT] = { PIOS };
+
+#if 0
+    uint usm;
+    uint uoff;
+    auto ret = pio_claim_free_sm_and_add_program_for_gpio_range(_pgm, pio, &usm, &uoff, start, cnt, true);
+    *sm = usm;
+    *offset = uoff;
+    DEBUGV("clain %d\n", ret);
+    return ret;
+#endif
+
+    bool needsHigh = (start + cnt) >= 32;
+    DEBUGV("PIOProgram %p: Searching for high=%d, pins %d-%d\n", _pgm, needsHigh ? 1 : 0, start, start + cnt - 1);
 
     // If it's already loaded into PIO IRAM, try and allocate in that specific PIO
-    for (int o = 0; o < 2; o++) {
+    for (int o = 0; o < PIOCNT; o++) {
         auto p = __pioMap[o].find(_pgm);
-        if (p != __pioMap[o].end()) {
+        if ((p != __pioMap[o].end()) && (__pioHighGPIO[o] == needsHigh)) {
             int idx = pio_claim_unused_sm(pi[o], false);
             if (idx >= 0) {
+                DEBUGV("PIOProgram %p: Reusing IMEM ON PIO %p(high=%d) for pins %d-%d\n", _pgm, pi[o], __pioHighGPIO[o] ? 1 : 0, start, start + cnt - 1);
                 _pio = pi[o];
                 _sm = idx;
                 *pio = pi[o];
@@ -61,22 +85,55 @@ bool PIOProgram::prepare(PIO *pio, int *sm, int *offset) {
     }
 
     // Not in any PIO IRAM, so try and add
-    for (int o = 0; o < 2; o++) {
-        if (pio_can_add_program(pi[o], _pgm)) {
-            int idx = pio_claim_unused_sm(pi[o], false);
-            if (idx >= 0) {
-                int off = pio_add_program(pi[o], _pgm);
-                __pioMap[o].insert({_pgm, off});
-                _pio = pi[o];
-                _sm = idx;
-                *pio = pi[o];
-                *sm = idx;
-                *offset = off;
-                return true;
+    for (int o = 0; o < PIOCNT; o++) {
+        if (__pioAllocated[o] && (__pioHighGPIO[o] == needsHigh)) {
+            DEBUGV("PIOProgram: Checking PIO %p\n", pi[o]);
+            if (pio_can_add_program(pi[o], _pgm)) {
+                int idx = pio_claim_unused_sm(pi[o], false);
+                if (idx >= 0) {
+                    DEBUGV("PIOProgram %p: Adding IMEM ON PIO %p(high=%d) for pins %d-%d\n", _pgm, pi[o], __pioHighGPIO[o] ? 1 : 0, start, start + cnt - 1);
+                    int off = pio_add_program(pi[o], _pgm);
+                    __pioMap[o].insert({_pgm, off});
+                    _pio = pi[o];
+                    _sm = idx;
+                    *pio = pi[o];
+                    *sm = idx;
+                    *offset = off;
+                    return true;
+                } else {
+                    DEBUGV("PIOProgram: can't claim unused SM\n");
+                }
+            } else {
+                DEBUGV("PIOProgram: can't add program\n");
             }
+        } else {
+            DEBUGV("PIOProgram: Skipping PIO %p, wrong allocated/needhi\n", pi[o]);
         }
     }
 
+    // No existing PIOs can meet, is there an unallocated one we can allocate?
+    PIO p;
+    uint idx;
+    uint off;
+    auto rc = pio_claim_free_sm_and_add_program_for_gpio_range(_pgm, &p, &idx, &off, start, cnt, true);
+    if (rc) {
+        int o = 0;
+        while (p != pi[o]) {
+            o++;
+        }
+        assert(!__pioAllocated[o]);
+        __pioAllocated[o]  = true;
+        __pioHighGPIO[o] = needsHigh;
+        DEBUGV("PIOProgram %p: Allocating new PIO %p(high=%d) for pins %d-%d\n", _pgm, pi[o], __pioHighGPIO[o] ? 1 : 0, start, start + cnt - 1);
+        __pioMap[o].insert({_pgm, off});
+        _pio = pi[o];
+        _sm = idx;
+        *pio = pi[o];
+        *sm = idx;
+        *offset = off;
+        return true;
+    }
+
     // Nope, no room either for SMs or INSNs
     return false;
 }

cores/rp2040/PIOProgram.h

@@ -28,7 +28,7 @@ public:
     PIOProgram(const pio_program_t *pgm);
     ~PIOProgram();
     // Possibly load into a PIO and allocate a SM
-    bool prepare(PIO *pio, int *sm, int *offset);
+    bool prepare(PIO *pio, int *sm, int *offset, int gpio_start = 0, int gpio_cnt = 1);
 
 private:
     const pio_program_t *_pgm;

cores/rp2040/RP2040Support.h

@@ -27,6 +27,7 @@
 #include <hardware/structs/rosc.h>
 #include <hardware/structs/systick.h>
 #include <pico/multicore.h>
+#include <hardware/dma.h>
 #include <pico/rand.h>
 #include <pico/util/queue.h>
 #include <pico/bootrom.h>
@@ -59,8 +60,13 @@ public:
     void registerCore() {
         if (!__isFreeRTOS) {
             multicore_fifo_clear_irq();
+#ifdef PICO_RP2350
+            irq_set_exclusive_handler(SIO_IRQ_FIFO, _irq);
+            irq_set_enabled(SIO_IRQ_FIFO, true);
+#else
             irq_set_exclusive_handler(SIO_IRQ_PROC0 + get_core_num(), _irq);
             irq_set_enabled(SIO_IRQ_PROC0 + get_core_num(), true);
+#endif
         }
         // FreeRTOS port.c will handle the IRQ hooking
     }
@@ -157,6 +163,10 @@ extern RP2040 rp2040;
 extern "C" void main1();
 extern "C" char __StackLimit;
 extern "C" char __bss_end__;
+extern "C" void setup1() __attribute__((weak));
+extern "C" void loop1() __attribute__((weak));
+extern "C" bool core1_separate_stack;
+extern "C" uint32_t* core1_separate_stack_address;
 
 class RP2040 {
 public:
@@ -238,6 +248,56 @@ public:
         return &__StackLimit  - &__bss_end__;
     }
 
+    inline int getFreePSRAMHeap() {
+        return getTotalPSRAMHeap() - getUsedPSRAMHeap();
+    }
+
+    inline int getUsedPSRAMHeap() {
+#if defined(RP2350_PSRAM_CS)
+        extern size_t __psram_total_used();
+        return __psram_total_used();
+#else
+        return 0;
+#endif
+    }
+
+    inline int getTotalPSRAMHeap() {
+#if defined(RP2350_PSRAM_CS)
+        extern size_t __psram_total_space();
+        return __psram_total_space();
+#else
+        return 0;
+#endif
+    }
+
+    inline uint32_t getStackPointer() {
+        uint32_t *sp;
+        asm volatile("mov %0, sp" : "=r"(sp));
+        return (uint32_t)sp;
+    }
+
+    inline int getFreeStack() {
+        const unsigned int sp = getStackPointer();
+        uint32_t ref = 0x20040000;
+        if (setup1 || loop1) {
+            if (core1_separate_stack) {
+                ref = cpuid() ? (unsigned int)core1_separate_stack_address : 0x20040000;
+            } else {
+                ref = cpuid() ? 0x20040000 : 0x20041000;
+            }
+        }
+        return sp - ref;
+    }
+
+    inline size_t getPSRAMSize() {
+#if defined(RP2350_PSRAM_CS)
+        extern size_t __psram_size;
+        return __psram_size;
+#else
+        return 0;
+#endif
+    }
+
     void idleOtherCore() {
         fifo.idleOtherCore();
     }
@@ -288,6 +348,36 @@ public:
         return id;
     }
 
+#pragma GCC push_options
+#pragma GCC optimize ("Os")
+    void *memcpyDMA(void *dest, const void *src, size_t n) {
+        // Allocate a DMA channel on 1st call, reuse it every call after
+        if (memcpyDMAChannel < 1) {
+            memcpyDMAChannel = dma_claim_unused_channel(true);
+            dma_channel_config c = dma_channel_get_default_config(memcpyDMAChannel);
+            channel_config_set_transfer_data_size(&c, DMA_SIZE_32);
+            channel_config_set_read_increment(&c, true);
+            channel_config_set_write_increment(&c, true);
+            channel_config_set_irq_quiet(&c, true);
+            dma_channel_set_config(memcpyDMAChannel, &c, false);
+        }
+        // If there's any misalignment or too small, use regular memcpy which can handle it
+        if ((n < 64) || (((uint32_t)dest) | ((uint32_t)src) | n) & 3) {
+            return memcpy(dest, src, n);
+        }
+
+        int words = n / 4;
+        dma_channel_set_read_addr(memcpyDMAChannel, src, false);
+        dma_channel_set_write_addr(memcpyDMAChannel, dest, false);
+        dma_channel_set_trans_count(memcpyDMAChannel, words, false);
+        dma_channel_start(memcpyDMAChannel);
+        while (dma_channel_is_busy(memcpyDMAChannel)) {
+            /* busy wait dma */
+        }
+        return dest;
+    }
+#pragma GCC pop_options
+
     // Multicore comms FIFO
     _MFIFO fifo;
 
@@ -313,4 +403,5 @@ private:
     PIO _pio;
     int _sm;
     PIOProgram *_ccountPgm;
+    int memcpyDMAChannel = -1;
 };

cores/rp2040/RP2040USB.cpp

@@ -35,7 +35,7 @@
 #include <pico/usb_reset_interface.h>
 #include <hardware/watchdog.h>
 #include <pico/bootrom.h>
-#include "sdkoverride/tusb_absmouse.h"
+#include "sdkoverride/tusb_gamepad16.h"
 #include <device/usbd_pvt.h>
 
 // Big, global USB mutex, shared with all USB devices to make sure we don't
@@ -83,6 +83,8 @@ static int __usb_task_irq;
   9, TUSB_DESC_INTERFACE, _itfnum, 0, 0, TUSB_CLASS_VENDOR_SPECIFIC, RESET_INTERFACE_SUBCLASS, RESET_INTERFACE_PROTOCOL, _stridx,
 
 
+int usb_hid_poll_interval __attribute__((weak)) = 10;
+
 const uint8_t *tud_descriptor_device_cb(void) {
     static tusb_desc_device_t usbd_desc_device = {
         .bLength = sizeof(tusb_desc_device_t),
@@ -157,7 +159,7 @@ void __SetupDescHIDReport() {
     //allocate memory for the HID report descriptors. We don't use them, but need the size here.
     uint8_t desc_hid_report_mouse[] = { TUD_HID_REPORT_DESC_MOUSE(HID_REPORT_ID(1)) };
     uint8_t desc_hid_report_absmouse[] = { TUD_HID_REPORT_DESC_ABSMOUSE(HID_REPORT_ID(1)) };
-    uint8_t desc_hid_report_joystick[] = { TUD_HID_REPORT_DESC_GAMEPAD(HID_REPORT_ID(1)) };
+    uint8_t desc_hid_report_joystick[] = { TUD_HID_REPORT_DESC_GAMEPAD16(HID_REPORT_ID(1)) };
     uint8_t desc_hid_report_keyboard[] = { TUD_HID_REPORT_DESC_KEYBOARD(HID_REPORT_ID(1)), TUD_HID_REPORT_DESC_CONSUMER(HID_REPORT_ID(2)) };
     int size = 0;
 
@@ -227,7 +229,7 @@ void __SetupDescHIDReport() {
                 reportid++;
                 offset += sizeof(desc_hid_report_absmouse);
             }
-            uint8_t desc_local[] = { TUD_HID_REPORT_DESC_GAMEPAD(HID_REPORT_ID(reportid)) };
+            uint8_t desc_local[] = { TUD_HID_REPORT_DESC_GAMEPAD16(HID_REPORT_ID(reportid)) };
             memcpy(__hid_report + offset, desc_local, sizeof(desc_local));
         }
     }
@@ -263,7 +265,7 @@ void __SetupUSBDescriptor() {
         uint8_t hid_itf = __USBInstallSerial ? 2 : 0;
         uint8_t hid_desc[TUD_HID_DESC_LEN] = {
             // Interface number, string index, protocol, report descriptor len, EP In & Out address, size & polling interval
-            TUD_HID_DESCRIPTOR(hid_itf, 0, HID_ITF_PROTOCOL_NONE, hid_report_len, EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10)
+            TUD_HID_DESCRIPTOR(hid_itf, 0, HID_ITF_PROTOCOL_NONE, hid_report_len, EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, (uint8_t)usb_hid_poll_interval)
         };
 
         uint8_t msd_itf = interface_count - 1;
@@ -394,6 +396,18 @@ void __USBStart() {
 }
 
 
+bool __USBHIDReady() {
+    uint32_t start = millis();
+    const uint32_t timeout = 500;
+
+    while (((millis() - start) < timeout) && tud_ready() && !tud_hid_ready()) {
+        tud_task();
+        delayMicroseconds(1);
+    }
+    return tud_hid_ready();
+}
+
+
 // Invoked when received GET_REPORT control request
 // Application must fill buffer report's content and return its length.
 // Return zero will cause the stack to STALL request
@@ -552,8 +566,6 @@ usbd_class_driver_t const *usbd_app_driver_get_cb(uint8_t *driver_count) {
 
 #elif defined NO_USB
 
-// will ensure backward compatibility with existing code when using pico-debug
-
 #warning "NO_USB selected. No output to Serial will occur!"
 
 #include <Arduino.h>

cores/rp2040/RP2040USB.h

@@ -45,3 +45,6 @@ int __USBGetJoystickReportID();
 
 // Called by main() to init the USB HW/SW.
 void __USBStart();
+
+// Helper class for HID report sending with wait and timeout
+bool __USBHIDReady();

cores/rp2040/RP2040Version.h

@@ -1,5 +1,5 @@
 #pragma once
-#define ARDUINO_PICO_MAJOR 3
-#define ARDUINO_PICO_MINOR 3
-#define ARDUINO_PICO_REVISION 1
-#define ARDUINO_PICO_VERSION_STR "3.3.1"
+#define ARDUINO_PICO_MAJOR 4
+#define ARDUINO_PICO_MINOR 0
+#define ARDUINO_PICO_REVISION 3
+#define ARDUINO_PICO_VERSION_STR "4.0.3"

cores/rp2040/SerialPIO.cpp

@@ -33,6 +33,7 @@ static std::map<int, PIOProgram*> _rxMap;
 // Duplicate a program and replace the first insn with a "set x, repl"
 static pio_program_t *pio_make_uart_prog(int repl, const pio_program_t *pg) {
     pio_program_t *p = new pio_program_t;
+    memcpy(p, pg, sizeof(*p));
     p->length = pg->length;
     p->origin = pg->origin;
     uint16_t *insn = (uint16_t *)malloc(p->length * 2);
@@ -46,24 +47,22 @@ static pio_program_t *pio_make_uart_prog(int repl, const pio_program_t *pg) {
     return p;
 }
 
-static PIOProgram *_getTxProgram(int bits, bool inverted) {
-    int key = inverted ? -bits : bits;
-    auto f = _txMap.find(key);
+static PIOProgram *_getTxProgram(int bits) {
+    auto f = _txMap.find(bits);
     if (f == _txMap.end()) {
-        pio_program_t * p = pio_make_uart_prog(bits, inverted ? &pio_tx_inv_program : &pio_tx_program);
-        _txMap.insert({key, new PIOProgram(p)});
-        f = _txMap.find(key);
+        pio_program_t * p = pio_make_uart_prog(bits, &pio_tx_program);
+        _txMap.insert({bits, new PIOProgram(p)});
+        f = _txMap.find(bits);
     }
     return f->second;
 }
 
-static PIOProgram *_getRxProgram(int bits, bool inverted) {
-    int key = inverted ? -bits : bits;
-    auto f = _rxMap.find(key);
+static PIOProgram *_getRxProgram(int bits) {
+    auto f = _rxMap.find(bits);
     if (f == _rxMap.end()) {
-        pio_program_t * p = pio_make_uart_prog(bits, inverted ? &pio_rx_inv_program : &pio_rx_program);
-        _rxMap.insert({key, new PIOProgram(p)});
-        f = _rxMap.find(key);
+        pio_program_t * p = pio_make_uart_prog(bits, &pio_rx_program);
+        _rxMap.insert({bits, new PIOProgram(p)});
+        f = _rxMap.find(bits);
     }
     return f->second;
 }
@@ -80,9 +79,9 @@ static int _parity(int bits, int data) {
 
 // We need to cache generated SerialPIOs so we can add data to them from
 // the shared handler
-static SerialPIO *_pioSP[2][4];
+static SerialPIO *_pioSP[3][4];
 static void __not_in_flash_func(_fifoIRQ)() {
-    for (int p = 0; p < 2; p++) {
+    for (int p = 0; p < 3; p++) {
         for (int sm = 0; sm < 4; sm++) {
             SerialPIO *s = _pioSP[p][sm];
             if (s) {
@@ -98,7 +97,7 @@ void __not_in_flash_func(SerialPIO::_handleIRQ)() {
         return;
     }
     while (!pio_sm_is_rx_fifo_empty(_rxPIO, _rxSM)) {
-        uint32_t decode = _rxPIO->rxf[_rxSM] ^ (_rxInverted ? 0xffffffff : 0);
+        uint32_t decode = _rxPIO->rxf[_rxSM];
         decode >>= 33 - _rxBits;
         uint32_t val = 0;
         for (int b = 0; b < _bits + 1; b++) {
@@ -140,6 +139,8 @@ SerialPIO::SerialPIO(pin_size_t tx, pin_size_t rx, size_t fifoSize) {
     _fifoSize = fifoSize + 1; // Always one unused entry
     _queue = new uint8_t[_fifoSize];
     mutex_init(&_mutex);
+    _invertTX = false;
+    _invertRX = false;
 }
 
 SerialPIO::~SerialPIO() {
@@ -147,6 +148,21 @@ SerialPIO::~SerialPIO() {
     delete[] _queue;
 }
 
+static int pio_irq_0(PIO p) {
+    switch (pio_get_index(p)) {
+    case 0:
+        return PIO0_IRQ_0;
+    case 1:
+        return PIO1_IRQ_0;
+#if defined(PICO_RP2350)
+    case 2:
+        return PIO2_IRQ_0;
+#endif
+    default:
+        return -1;
+    }
+}
+
 void SerialPIO::begin(unsigned long baud, uint16_t config) {
     _overflow = false;
     _baud = baud;
@@ -191,9 +207,9 @@ void SerialPIO::begin(unsigned long baud, uint16_t config) {
 
     if (_tx != NOPIN) {
         _txBits = _bits + _stop + (_parity != UART_PARITY_NONE ? 1 : 0) + 1/*start bit*/;
-        _txPgm = _getTxProgram(_txBits, _txInverted);
+        _txPgm = _getTxProgram(_txBits);
         int off;
-        if (!_txPgm->prepare(&_txPIO, &_txSM, &off)) {
+        if (!_txPgm->prepare(&_txPIO, &_txSM, &off, _tx, 1)) {
             DEBUGCORE("ERROR: Unable to allocate PIO TX UART, out of PIO resources\n");
             // ERROR, no free slots
             return;
@@ -211,6 +227,7 @@ void SerialPIO::begin(unsigned long baud, uint16_t config) {
         pio_sm_exec(_txPIO, _txSM, pio_encode_mov(pio_isr, pio_osr));
 
         // Start running!
+        gpio_set_outover(_tx, _invertTX);
         pio_sm_set_enabled(_txPIO, _txSM, true);
     }
     if (_rx != NOPIN) {
@@ -218,9 +235,9 @@ void SerialPIO::begin(unsigned long baud, uint16_t config) {
         _reader = 0;
 
         _rxBits = 2 * (_bits + _stop + (_parity != UART_PARITY_NONE ? 1 : 0) + 1) - 1;
-        _rxPgm = _getRxProgram(_rxBits, _rxInverted);
+        _rxPgm = _getRxProgram(_rxBits);
         int off;
-        if (!_rxPgm->prepare(&_rxPIO, &_rxSM, &off)) {
+        if (!_rxPgm->prepare(&_rxPIO, &_rxSM, &off, _rx, 1)) {
             DEBUGCORE("ERROR: Unable to allocate PIO RX UART, out of PIO resources\n");
             return;
         }
@@ -245,10 +262,11 @@ void SerialPIO::begin(unsigned long baud, uint16_t config) {
         case 2: pio_set_irq0_source_enabled(_rxPIO, pis_sm2_rx_fifo_not_empty, true); break;
         case 3: pio_set_irq0_source_enabled(_rxPIO, pis_sm3_rx_fifo_not_empty, true); break;
         }
-        auto irqno = pio_get_index(_rxPIO) == 0 ? PIO0_IRQ_0 : PIO1_IRQ_0;
+        auto irqno = pio_irq_0(_rxPIO);
         irq_set_exclusive_handler(irqno, _fifoIRQ);
         irq_set_enabled(irqno, true);
 
+        gpio_set_inover(_rx, _invertRX);
         pio_sm_set_enabled(_rxPIO, _rxSM, true);
     }
 
@@ -262,6 +280,7 @@ void SerialPIO::end() {
     if (_tx != NOPIN) {
         pio_sm_set_enabled(_txPIO, _txSM, false);
         pio_sm_unclaim(_txPIO, _txSM);
+        gpio_set_outover(_tx, 0);
     }
     if (_rx != NOPIN) {
         pio_sm_set_enabled(_rxPIO, _rxSM, false);
@@ -274,9 +293,10 @@ void SerialPIO::end() {
             used = used || !!_pioSP[pioNum][i];
         }
         if (!used) {
-            auto irqno = pioNum == 0 ? PIO0_IRQ_0 : PIO1_IRQ_0;
+            auto irqno = pio_irq_0(_rxPIO);
             irq_set_enabled(irqno, false);
         }
+        gpio_set_inover(_rx, 0);
     }
     _running = false;
 }
@@ -348,11 +368,6 @@ void SerialPIO::flush() {
     delay((1000 * (_txBits + 1)) / _baud);
 }
 
-void SerialPIO::setInverted(bool invTx, bool invRx) {
-    _txInverted = invTx;
-    _rxInverted = invRx;
-}
-
 size_t SerialPIO::write(uint8_t c) {
     CoreMutex m(&_mutex);
     if (!_running || !m || (_tx == NOPIN)) {
@@ -371,7 +386,7 @@ size_t SerialPIO::write(uint8_t c) {
     }
     val <<= 1;  // Start bit = low
 
-    pio_sm_put_blocking(_txPIO, _txSM, _txInverted ? ~val : val);
+    pio_sm_put_blocking(_txPIO, _txSM, val);
 
     return 1;
 }

cores/rp2040/SerialPIO.h

@@ -41,7 +41,22 @@ public:
     void begin(unsigned long baud, uint16_t config) override;
     void end() override;
 
-    void setInverted(bool invTx = true, bool invRx = true);
+    void setInverted(bool invTx = true, bool invRx = true) {
+        setInvertTX(invTx);
+        setInvertRX(invRx);
+    }
+    bool setInvertTX(bool invert = true) {
+        if (!_running) {
+            _invertTX = invert;
+        }
+        return !_running;
+    }
+    bool setInvertRX(bool invert = true) {
+        if (!_running) {
+            _invertRX = invert;
+        }
+        return !_running;
+    }
 
     virtual int peek() override;
     virtual int read() override;
@@ -53,7 +68,7 @@ public:
     using Print::write;
     operator bool() override;
 
-    // Not to be called by users, only from the IRQ handler.  In public so that the C-language IQR callback can access it
+    // Not to be called by users, only from the IRQ handler.  In public so that the C-language IRQ callback can access it
     void _handleIRQ();
 
 protected:
@@ -65,8 +80,8 @@ protected:
     int _stop;
     bool _overflow;
     mutex_t _mutex;
-    bool _txInverted = false;
-    bool _rxInverted = false;
+    bool _invertTX;
+    bool _invertRX;
 
     PIOProgram *_txPgm;
     PIO _txPIO;

cores/rp2040/SerialUART.cpp

@@ -32,14 +32,24 @@ extern void serialEvent1() __attribute__((weak));
 extern void serialEvent2() __attribute__((weak));
 
 bool SerialUART::setRX(pin_size_t pin) {
-    constexpr uint32_t valid[2] = { __bitset({1, 13, 17, 29}) /* UART0 */,
+#ifdef PICO_RP2350B
+    constexpr uint64_t valid[2] = { __bitset({1, 13, 17, 29, 33, 45}) /* UART0 */,
+                                    __bitset({5, 9, 21, 25, 37, 41})  /* UART1 */
+                                  };
+#else
+    constexpr uint64_t valid[2] = { __bitset({1, 13, 17, 29}) /* UART0 */,
                                     __bitset({5, 9, 21, 25})  /* UART1 */
                                   };
-    if ((!_running) && ((1 << pin) & valid[uart_get_index(_uart)])) {
+#endif
+    if ((!_running) && ((1LL << pin) & valid[uart_get_index(_uart)])) {
         _rx = pin;
         return true;
     }
 
+    if (_rx == pin) {
+        return true;
+    }
+
     if (_running) {
         panic("FATAL: Attempting to set Serial%d.RX while running", uart_get_index(_uart) + 1);
     } else {
@@ -49,14 +59,24 @@ bool SerialUART::setRX(pin_size_t pin) {
 }
 
 bool SerialUART::setTX(pin_size_t pin) {
-    constexpr uint32_t valid[2] = { __bitset({0, 12, 16, 28}) /* UART0 */,
+#ifdef PICO_RP2350B
+    constexpr uint64_t valid[2] = { __bitset({0, 12, 16, 28, 32, 44}) /* UART0 */,
+                                    __bitset({4, 8, 20, 24, 36, 40})  /* UART1 */
+                                  };
+#else
+    constexpr uint64_t valid[2] = { __bitset({0, 12, 16, 28}) /* UART0 */,
                                     __bitset({4, 8, 20, 24})  /* UART1 */
                                   };
-    if ((!_running) && ((1 << pin) & valid[uart_get_index(_uart)])) {
+#endif
+    if ((!_running) && ((1LL << pin) & valid[uart_get_index(_uart)])) {
         _tx = pin;
         return true;
     }
 
+    if (_tx == pin) {
+        return true;
+    }
+
     if (_running) {
         panic("FATAL: Attempting to set Serial%d.TX while running", uart_get_index(_uart) + 1);
     } else {
@@ -66,14 +86,24 @@ bool SerialUART::setTX(pin_size_t pin) {
 }
 
 bool SerialUART::setRTS(pin_size_t pin) {
-    constexpr uint32_t valid[2] = { __bitset({3, 15, 19}) /* UART0 */,
+#ifdef PICO_RP2350B
+    constexpr uint64_t valid[2] = { __bitset({3, 15, 19, 31, 35, 47}) /* UART0 */,
+                                    __bitset({7, 11, 23, 27, 39, 43})  /* UART1 */
+                                  };
+#else
+    constexpr uint64_t valid[2] = { __bitset({3, 15, 19}) /* UART0 */,
                                     __bitset({7, 11, 23, 27})  /* UART1 */
                                   };
-    if ((!_running) && ((pin == UART_PIN_NOT_DEFINED) || ((1 << pin) & valid[uart_get_index(_uart)]))) {
+#endif
+    if ((!_running) && ((pin == UART_PIN_NOT_DEFINED) || ((1LL << pin) & valid[uart_get_index(_uart)]))) {
         _rts = pin;
         return true;
     }
 
+    if (_rts == pin) {
+        return true;
+    }
+
     if (_running) {
         panic("FATAL: Attempting to set Serial%d.RTS while running", uart_get_index(_uart) + 1);
     } else {
@@ -83,14 +113,24 @@ bool SerialUART::setRTS(pin_size_t pin) {
 }
 
 bool SerialUART::setCTS(pin_size_t pin) {
-    constexpr uint32_t valid[2] = { __bitset({2, 14, 18}) /* UART0 */,
+#ifdef PICO_RP2350B
+    constexpr uint64_t valid[2] = { __bitset({2, 14, 18, 30, 34, 46}) /* UART0 */,
+                                    __bitset({6, 10, 22, 26, 38, 42})  /* UART1 */
+                                  };
+#else
+    constexpr uint64_t valid[2] = { __bitset({2, 14, 18}) /* UART0 */,
                                     __bitset({6, 10, 22, 26})  /* UART1 */
                                   };
-    if ((!_running) && ((pin == UART_PIN_NOT_DEFINED) || ((1 << pin) & valid[uart_get_index(_uart)]))) {
+#endif
+    if ((!_running) && ((pin == UART_PIN_NOT_DEFINED) || ((1LL << pin) & valid[uart_get_index(_uart)]))) {
         _cts = pin;
         return true;
     }
 
+    if (_cts == pin) {
+        return true;
+    }
+
     if (_running) {
         panic("FATAL: Attempting to set Serial%d.CTS while running", uart_get_index(_uart) + 1);
     } else {
@@ -122,6 +162,9 @@ SerialUART::SerialUART(uart_inst_t *uart, pin_size_t tx, pin_size_t rx, pin_size
     _cts = cts;
     mutex_init(&_mutex);
     mutex_init(&_fifoMutex);
+    _invertTX = false;
+    _invertRX = false;
+    _invertControl = false;
 }
 
 static void _uart0IRQ();
@@ -138,14 +181,18 @@ void SerialUART::begin(unsigned long baud, uint16_t config) {
     _fcnTx = gpio_get_function(_tx);
     _fcnRx = gpio_get_function(_rx);
     gpio_set_function(_tx, GPIO_FUNC_UART);
+    gpio_set_outover(_tx, _invertTX ? 1 : 0);
     gpio_set_function(_rx, GPIO_FUNC_UART);
+    gpio_set_inover(_rx, _invertRX ? 1 : 0);
     if (_rts != UART_PIN_NOT_DEFINED) {
         _fcnRts = gpio_get_function(_rts);
         gpio_set_function(_rts, GPIO_FUNC_UART);
+        gpio_set_outover(_rts, _invertControl ? 1 : 0);
     }
     if (_cts != UART_PIN_NOT_DEFINED) {
         _fcnCts = gpio_get_function(_cts);
         gpio_set_function(_cts, GPIO_FUNC_UART);
+        gpio_set_inover(_cts, _invertControl ? 1 : 0);
     }
 
     uart_init(_uart, baud);
@@ -185,7 +232,7 @@ void SerialUART::begin(unsigned long baud, uint16_t config) {
         break;
     }
     uart_set_format(_uart, bits, stop, parity);
-    uart_set_hw_flow(_uart, _rts != UART_PIN_NOT_DEFINED, _cts != UART_PIN_NOT_DEFINED);
+    uart_set_hw_flow(_uart, _cts != UART_PIN_NOT_DEFINED, _rts != UART_PIN_NOT_DEFINED);
     _writer = 0;
     _reader = 0;
 
@@ -230,12 +277,16 @@ void SerialUART::end() {
 
     // Restore pin functions
     gpio_set_function(_tx, _fcnTx);
+    gpio_set_outover(_tx, 0);
     gpio_set_function(_rx, _fcnRx);
+    gpio_set_inover(_rx, 0);
     if (_rts != UART_PIN_NOT_DEFINED) {
         gpio_set_function(_rts, _fcnRts);
+        gpio_set_outover(_rts, 0);
     }
     if (_cts != UART_PIN_NOT_DEFINED) {
         gpio_set_function(_cts, _fcnCts);
+        gpio_set_inover(_cts, 0);
     }
 }
 

cores/rp2040/SerialUART.h

@@ -43,6 +43,26 @@ public:
         ret &= setTX(tx);
         return ret;
     }
+
+    bool setInvertTX(bool invert = true) {
+        if (!_running) {
+            _invertTX = invert;
+        }
+        return !_running;
+    }
+    bool setInvertRX(bool invert = true) {
+        if (!_running) {
+            _invertRX = invert;
+        }
+        return !_running;
+    }
+    bool setInvertControl(bool invert = true) {
+        if (!_running) {
+            _invertControl = invert;
+        }
+        return !_running;
+    }
+
     bool setFIFOSize(size_t size);
     bool setPollingMode(bool mode = true);
 
@@ -80,12 +100,13 @@ private:
     uart_inst_t *_uart;
     pin_size_t _tx, _rx;
     pin_size_t _rts, _cts;
-    enum gpio_function _fcnTx, _fcnRx, _fcnRts, _fcnCts;
+    gpio_function_t _fcnTx, _fcnRx, _fcnRts, _fcnCts;
     int _baud;
     mutex_t _mutex;
     bool _polling = false;
     bool _overflow;
     bool _break;
+    bool _invertTX, _invertRX, _invertControl;
 
     // Lockless, IRQ-handled circular queue
     uint32_t _writer;

cores/rp2040/SerialUSB.cpp

@@ -130,7 +130,7 @@ size_t SerialUSB::write(const uint8_t *buf, size_t length) {
 
     static uint64_t last_avail_time;
     int written = 0;
-    if (tud_cdc_connected()) {
+    if (tud_cdc_connected() || _ignoreFlowControl) {
         for (size_t i = 0; i < length;) {
             int n = length - i;
             int avail = tud_cdc_write_available();
@@ -171,6 +171,9 @@ SerialUSB::operator bool() {
     return tud_cdc_connected();
 }
 
+void SerialUSB::ignoreFlowControl(bool ignore) {
+    _ignoreFlowControl = ignore;
+}
 
 static bool _dtr = false;
 static bool _rts = false;
@@ -194,6 +197,14 @@ static void CheckSerialReset() {
     }
 }
 
+bool SerialUSB::dtr() {
+    return _dtr;
+}
+
+bool SerialUSB::rts() {
+    return _rts;
+}
+
 extern "C" void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts) {
     (void) itf;
     _dtr = dtr ? true : false;

cores/rp2040/SerialUSB.h

@@ -43,6 +43,10 @@ public:
     virtual size_t write(const uint8_t *p, size_t len) override;
     using Print::write;
     operator bool() override;
+    bool dtr();
+    bool rts();
+
+    void ignoreFlowControl(bool ignore = true);
 
     // ESP8266 compat
     void setDebugOutput(bool unused) {
@@ -51,6 +55,7 @@ public:
 
 private:
     bool _running = false;
+    bool _ignoreFlowControl = false;
 };
 
 extern SerialUSB Serial;

cores/rp2040/SoftwareSerial.h

@@ -30,10 +30,6 @@ public:
     }
 
     ~SoftwareSerial() {
-        if (_invert) {
-            gpio_set_outover(_tx, 0);
-            gpio_set_outover(_rx, 0);
-        }
     }
 
     virtual void begin(unsigned long baud = 115200) override {
@@ -41,11 +37,9 @@ public:
     };
 
     void begin(unsigned long baud, uint16_t config) override {
+        setInvertTX(_invert);
+        setInvertRX(_invert);
         SerialPIO::begin(baud, config);
-        if (_invert) {
-            gpio_set_outover(_tx, GPIO_OVERRIDE_INVERT);
-            gpio_set_inover(_rx, GPIO_OVERRIDE_INVERT);
-        }
     }
 
     void listen() { /* noop */ }

cores/rp2040/TZ.h

@@ -0,0 +1,474 @@
+
+// autogenerated from https://raw.githubusercontent.com/nayarsystems/posix_tz_db/master/zones.csv
+// by script <rp2040 arduino core>/tools/tzupdate.sh
+// Sat 20 Jan 2024 08:54:45 PM UTC
+//
+// This database is autogenerated from IANA timezone database
+//    https://raw.githubusercontent.com/nayarsystems/posix_tz_db/master/zones.csv
+//    (using https://www.iana.org/time-zones)
+// and can be updated on demand in this repository
+// or by yourself using the above script
+
+#pragma once
+
+#define TZ_Africa_Abidjan	("GMT0")
+#define TZ_Africa_Accra	("GMT0")
+#define TZ_Africa_Addis_Ababa	("EAT-3")
+#define TZ_Africa_Algiers	("CET-1")
+#define TZ_Africa_Asmara	("EAT-3")
+#define TZ_Africa_Bamako	("GMT0")
+#define TZ_Africa_Bangui	("WAT-1")
+#define TZ_Africa_Banjul	("GMT0")
+#define TZ_Africa_Bissau	("GMT0")
+#define TZ_Africa_Blantyre	("CAT-2")
+#define TZ_Africa_Brazzaville	("WAT-1")
+#define TZ_Africa_Bujumbura	("CAT-2")
+#define TZ_Africa_Cairo	("EET-2EEST,M4.5.5/0,M10.5.4/24")
+#define TZ_Africa_Casablanca	("<+01>-1")
+#define TZ_Africa_Ceuta	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Africa_Conakry	("GMT0")
+#define TZ_Africa_Dakar	("GMT0")
+#define TZ_Africa_Dar_es_Salaam	("EAT-3")
+#define TZ_Africa_Djibouti	("EAT-3")
+#define TZ_Africa_Douala	("WAT-1")
+#define TZ_Africa_El_Aaiun	("<+01>-1")
+#define TZ_Africa_Freetown	("GMT0")
+#define TZ_Africa_Gaborone	("CAT-2")
+#define TZ_Africa_Harare	("CAT-2")
+#define TZ_Africa_Johannesburg	("SAST-2")
+#define TZ_Africa_Juba	("CAT-2")
+#define TZ_Africa_Kampala	("EAT-3")
+#define TZ_Africa_Khartoum	("CAT-2")
+#define TZ_Africa_Kigali	("CAT-2")
+#define TZ_Africa_Kinshasa	("WAT-1")
+#define TZ_Africa_Lagos	("WAT-1")
+#define TZ_Africa_Libreville	("WAT-1")
+#define TZ_Africa_Lome	("GMT0")
+#define TZ_Africa_Luanda	("WAT-1")
+#define TZ_Africa_Lubumbashi	("CAT-2")
+#define TZ_Africa_Lusaka	("CAT-2")
+#define TZ_Africa_Malabo	("WAT-1")
+#define TZ_Africa_Maputo	("CAT-2")
+#define TZ_Africa_Maseru	("SAST-2")
+#define TZ_Africa_Mbabane	("SAST-2")
+#define TZ_Africa_Mogadishu	("EAT-3")
+#define TZ_Africa_Monrovia	("GMT0")
+#define TZ_Africa_Nairobi	("EAT-3")
+#define TZ_Africa_Ndjamena	("WAT-1")
+#define TZ_Africa_Niamey	("WAT-1")
+#define TZ_Africa_Nouakchott	("GMT0")
+#define TZ_Africa_Ouagadougou	("GMT0")
+#define TZ_Africa_PortomNovo	("WAT-1")
+#define TZ_Africa_Sao_Tome	("GMT0")
+#define TZ_Africa_Tripoli	("EET-2")
+#define TZ_Africa_Tunis	("CET-1")
+#define TZ_Africa_Windhoek	("CAT-2")
+#define TZ_America_Adak	("HST10HDT,M3.2.0,M11.1.0")
+#define TZ_America_Anchorage	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_Anguilla	("AST4")
+#define TZ_America_Antigua	("AST4")
+#define TZ_America_Araguaina	("<-03>3")
+#define TZ_America_Argentina_Buenos_Aires	("<-03>3")
+#define TZ_America_Argentina_Catamarca	("<-03>3")
+#define TZ_America_Argentina_Cordoba	("<-03>3")
+#define TZ_America_Argentina_Jujuy	("<-03>3")
+#define TZ_America_Argentina_La_Rioja	("<-03>3")
+#define TZ_America_Argentina_Mendoza	("<-03>3")
+#define TZ_America_Argentina_Rio_Gallegos	("<-03>3")
+#define TZ_America_Argentina_Salta	("<-03>3")
+#define TZ_America_Argentina_San_Juan	("<-03>3")
+#define TZ_America_Argentina_San_Luis	("<-03>3")
+#define TZ_America_Argentina_Tucuman	("<-03>3")
+#define TZ_America_Argentina_Ushuaia	("<-03>3")
+#define TZ_America_Aruba	("AST4")
+#define TZ_America_Asuncion	("<-04>4<-03>,M10.1.0/0,M3.4.0/0")
+#define TZ_America_Atikokan	("EST5")
+#define TZ_America_Bahia	("<-03>3")
+#define TZ_America_Bahia_Banderas	("CST6")
+#define TZ_America_Barbados	("AST4")
+#define TZ_America_Belem	("<-03>3")
+#define TZ_America_Belize	("CST6")
+#define TZ_America_BlancmSablon	("AST4")
+#define TZ_America_Boa_Vista	("<-04>4")
+#define TZ_America_Bogota	("<-05>5")
+#define TZ_America_Boise	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_America_Cambridge_Bay	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_America_Campo_Grande	("<-04>4")
+#define TZ_America_Cancun	("EST5")
+#define TZ_America_Caracas	("<-04>4")
+#define TZ_America_Cayenne	("<-03>3")
+#define TZ_America_Cayman	("EST5")
+#define TZ_America_Chicago	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Chihuahua	("CST6")
+#define TZ_America_Costa_Rica	("CST6")
+#define TZ_America_Creston	("MST7")
+#define TZ_America_Cuiaba	("<-04>4")
+#define TZ_America_Curacao	("AST4")
+#define TZ_America_Danmarkshavn	("GMT0")
+#define TZ_America_Dawson	("MST7")
+#define TZ_America_Dawson_Creek	("MST7")
+#define TZ_America_Denver	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_America_Detroit	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Dominica	("AST4")
+#define TZ_America_Edmonton	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_America_Eirunepe	("<-05>5")
+#define TZ_America_El_Salvador	("CST6")
+#define TZ_America_Fortaleza	("<-03>3")
+#define TZ_America_Fort_Nelson	("MST7")
+#define TZ_America_Glace_Bay	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_America_Godthab	("<-02>2<-01>,M3.5.0/-1,M10.5.0/0")
+#define TZ_America_Goose_Bay	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_America_Grand_Turk	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Grenada	("AST4")
+#define TZ_America_Guadeloupe	("AST4")
+#define TZ_America_Guatemala	("CST6")
+#define TZ_America_Guayaquil	("<-05>5")
+#define TZ_America_Guyana	("<-04>4")
+#define TZ_America_Halifax	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_America_Havana	("CST5CDT,M3.2.0/0,M11.1.0/1")
+#define TZ_America_Hermosillo	("MST7")
+#define TZ_America_Indiana_Indianapolis	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Knox	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Marengo	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Petersburg	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Tell_City	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Vevay	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Vincennes	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Indiana_Winamac	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Inuvik	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_America_Iqaluit	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Jamaica	("EST5")
+#define TZ_America_Juneau	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_Kentucky_Louisville	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Kentucky_Monticello	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Kralendijk	("AST4")
+#define TZ_America_La_Paz	("<-04>4")
+#define TZ_America_Lima	("<-05>5")
+#define TZ_America_Los_Angeles	("PST8PDT,M3.2.0,M11.1.0")
+#define TZ_America_Lower_Princes	("AST4")
+#define TZ_America_Maceio	("<-03>3")
+#define TZ_America_Managua	("CST6")
+#define TZ_America_Manaus	("<-04>4")
+#define TZ_America_Marigot	("AST4")
+#define TZ_America_Martinique	("AST4")
+#define TZ_America_Matamoros	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Mazatlan	("MST7")
+#define TZ_America_Menominee	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Merida	("CST6")
+#define TZ_America_Metlakatla	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_Mexico_City	("CST6")
+#define TZ_America_Miquelon	("<-03>3<-02>,M3.2.0,M11.1.0")
+#define TZ_America_Moncton	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_America_Monterrey	("CST6")
+#define TZ_America_Montevideo	("<-03>3")
+#define TZ_America_Montreal	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Montserrat	("AST4")
+#define TZ_America_Nassau	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_New_York	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Nipigon	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Nome	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_Noronha	("<-02>2")
+#define TZ_America_North_Dakota_Beulah	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_North_Dakota_Center	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_North_Dakota_New_Salem	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Nuuk	("<-02>2<-01>,M3.5.0/-1,M10.5.0/0")
+#define TZ_America_Ojinaga	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Panama	("EST5")
+#define TZ_America_Pangnirtung	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Paramaribo	("<-03>3")
+#define TZ_America_Phoenix	("MST7")
+#define TZ_America_PortmaumPrince	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Port_of_Spain	("AST4")
+#define TZ_America_Porto_Velho	("<-04>4")
+#define TZ_America_Puerto_Rico	("AST4")
+#define TZ_America_Punta_Arenas	("<-03>3")
+#define TZ_America_Rainy_River	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Rankin_Inlet	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Recife	("<-03>3")
+#define TZ_America_Regina	("CST6")
+#define TZ_America_Resolute	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Rio_Branco	("<-05>5")
+#define TZ_America_Santarem	("<-03>3")
+#define TZ_America_Santiago	("<-04>4<-03>,M9.1.6/24,M4.1.6/24")
+#define TZ_America_Santo_Domingo	("AST4")
+#define TZ_America_Sao_Paulo	("<-03>3")
+#define TZ_America_Scoresbysund	("<-01>1<+00>,M3.5.0/0,M10.5.0/1")
+#define TZ_America_Sitka	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_St_Barthelemy	("AST4")
+#define TZ_America_St_Johns	("NST3:30NDT,M3.2.0,M11.1.0")
+#define TZ_America_St_Kitts	("AST4")
+#define TZ_America_St_Lucia	("AST4")
+#define TZ_America_St_Thomas	("AST4")
+#define TZ_America_St_Vincent	("AST4")
+#define TZ_America_Swift_Current	("CST6")
+#define TZ_America_Tegucigalpa	("CST6")
+#define TZ_America_Thule	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_America_Thunder_Bay	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Tijuana	("PST8PDT,M3.2.0,M11.1.0")
+#define TZ_America_Toronto	("EST5EDT,M3.2.0,M11.1.0")
+#define TZ_America_Tortola	("AST4")
+#define TZ_America_Vancouver	("PST8PDT,M3.2.0,M11.1.0")
+#define TZ_America_Whitehorse	("MST7")
+#define TZ_America_Winnipeg	("CST6CDT,M3.2.0,M11.1.0")
+#define TZ_America_Yakutat	("AKST9AKDT,M3.2.0,M11.1.0")
+#define TZ_America_Yellowknife	("MST7MDT,M3.2.0,M11.1.0")
+#define TZ_Antarctica_Casey	("<+11>-11")
+#define TZ_Antarctica_Davis	("<+07>-7")
+#define TZ_Antarctica_DumontDUrville	("<+10>-10")
+#define TZ_Antarctica_Macquarie	("AEST-10AEDT,M10.1.0,M4.1.0/3")
+#define TZ_Antarctica_Mawson	("<+05>-5")
+#define TZ_Antarctica_McMurdo	("NZST-12NZDT,M9.5.0,M4.1.0/3")
+#define TZ_Antarctica_Palmer	("<-03>3")
+#define TZ_Antarctica_Rothera	("<-03>3")
+#define TZ_Antarctica_Syowa	("<+03>-3")
+#define TZ_Antarctica_Troll	("<+00>0<+02>-2,M3.5.0/1,M10.5.0/3")
+#define TZ_Antarctica_Vostok	("<+06>-6")
+#define TZ_Arctic_Longyearbyen	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Asia_Aden	("<+03>-3")
+#define TZ_Asia_Almaty	("<+06>-6")
+#define TZ_Asia_Amman	("<+03>-3")
+#define TZ_Asia_Anadyr	("<+12>-12")
+#define TZ_Asia_Aqtau	("<+05>-5")
+#define TZ_Asia_Aqtobe	("<+05>-5")
+#define TZ_Asia_Ashgabat	("<+05>-5")
+#define TZ_Asia_Atyrau	("<+05>-5")
+#define TZ_Asia_Baghdad	("<+03>-3")
+#define TZ_Asia_Bahrain	("<+03>-3")
+#define TZ_Asia_Baku	("<+04>-4")
+#define TZ_Asia_Bangkok	("<+07>-7")
+#define TZ_Asia_Barnaul	("<+07>-7")
+#define TZ_Asia_Beirut	("EET-2EEST,M3.5.0/0,M10.5.0/0")
+#define TZ_Asia_Bishkek	("<+06>-6")
+#define TZ_Asia_Brunei	("<+08>-8")
+#define TZ_Asia_Chita	("<+09>-9")
+#define TZ_Asia_Choibalsan	("<+08>-8")
+#define TZ_Asia_Colombo	("<+0530>-5:30")
+#define TZ_Asia_Damascus	("<+03>-3")
+#define TZ_Asia_Dhaka	("<+06>-6")
+#define TZ_Asia_Dili	("<+09>-9")
+#define TZ_Asia_Dubai	("<+04>-4")
+#define TZ_Asia_Dushanbe	("<+05>-5")
+#define TZ_Asia_Famagusta	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Asia_Gaza	("EET-2EEST,M3.4.4/50,M10.4.4/50")
+#define TZ_Asia_Hebron	("EET-2EEST,M3.4.4/50,M10.4.4/50")
+#define TZ_Asia_Ho_Chi_Minh	("<+07>-7")
+#define TZ_Asia_Hong_Kong	("HKT-8")
+#define TZ_Asia_Hovd	("<+07>-7")
+#define TZ_Asia_Irkutsk	("<+08>-8")
+#define TZ_Asia_Jakarta	("WIB-7")
+#define TZ_Asia_Jayapura	("WIT-9")
+#define TZ_Asia_Jerusalem	("IST-2IDT,M3.4.4/26,M10.5.0")
+#define TZ_Asia_Kabul	("<+0430>-4:30")
+#define TZ_Asia_Kamchatka	("<+12>-12")
+#define TZ_Asia_Karachi	("PKT-5")
+#define TZ_Asia_Kathmandu	("<+0545>-5:45")
+#define TZ_Asia_Khandyga	("<+09>-9")
+#define TZ_Asia_Kolkata	("IST-5:30")
+#define TZ_Asia_Krasnoyarsk	("<+07>-7")
+#define TZ_Asia_Kuala_Lumpur	("<+08>-8")
+#define TZ_Asia_Kuching	("<+08>-8")
+#define TZ_Asia_Kuwait	("<+03>-3")
+#define TZ_Asia_Macau	("CST-8")
+#define TZ_Asia_Magadan	("<+11>-11")
+#define TZ_Asia_Makassar	("WITA-8")
+#define TZ_Asia_Manila	("PST-8")
+#define TZ_Asia_Muscat	("<+04>-4")
+#define TZ_Asia_Nicosia	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Asia_Novokuznetsk	("<+07>-7")
+#define TZ_Asia_Novosibirsk	("<+07>-7")
+#define TZ_Asia_Omsk	("<+06>-6")
+#define TZ_Asia_Oral	("<+05>-5")
+#define TZ_Asia_Phnom_Penh	("<+07>-7")
+#define TZ_Asia_Pontianak	("WIB-7")
+#define TZ_Asia_Pyongyang	("KST-9")
+#define TZ_Asia_Qatar	("<+03>-3")
+#define TZ_Asia_Qyzylorda	("<+05>-5")
+#define TZ_Asia_Riyadh	("<+03>-3")
+#define TZ_Asia_Sakhalin	("<+11>-11")
+#define TZ_Asia_Samarkand	("<+05>-5")
+#define TZ_Asia_Seoul	("KST-9")
+#define TZ_Asia_Shanghai	("CST-8")
+#define TZ_Asia_Singapore	("<+08>-8")
+#define TZ_Asia_Srednekolymsk	("<+11>-11")
+#define TZ_Asia_Taipei	("CST-8")
+#define TZ_Asia_Tashkent	("<+05>-5")
+#define TZ_Asia_Tbilisi	("<+04>-4")
+#define TZ_Asia_Tehran	("<+0330>-3:30")
+#define TZ_Asia_Thimphu	("<+06>-6")
+#define TZ_Asia_Tokyo	("JST-9")
+#define TZ_Asia_Tomsk	("<+07>-7")
+#define TZ_Asia_Ulaanbaatar	("<+08>-8")
+#define TZ_Asia_Urumqi	("<+06>-6")
+#define TZ_Asia_UstmNera	("<+10>-10")
+#define TZ_Asia_Vientiane	("<+07>-7")
+#define TZ_Asia_Vladivostok	("<+10>-10")
+#define TZ_Asia_Yakutsk	("<+09>-9")
+#define TZ_Asia_Yangon	("<+0630>-6:30")
+#define TZ_Asia_Yekaterinburg	("<+05>-5")
+#define TZ_Asia_Yerevan	("<+04>-4")
+#define TZ_Atlantic_Azores	("<-01>1<+00>,M3.5.0/0,M10.5.0/1")
+#define TZ_Atlantic_Bermuda	("AST4ADT,M3.2.0,M11.1.0")
+#define TZ_Atlantic_Canary	("WET0WEST,M3.5.0/1,M10.5.0")
+#define TZ_Atlantic_Cape_Verde	("<-01>1")
+#define TZ_Atlantic_Faroe	("WET0WEST,M3.5.0/1,M10.5.0")
+#define TZ_Atlantic_Madeira	("WET0WEST,M3.5.0/1,M10.5.0")
+#define TZ_Atlantic_Reykjavik	("GMT0")
+#define TZ_Atlantic_South_Georgia	("<-02>2")
+#define TZ_Atlantic_Stanley	("<-03>3")
+#define TZ_Atlantic_St_Helena	("GMT0")
+#define TZ_Australia_Adelaide	("ACST-9:30ACDT,M10.1.0,M4.1.0/3")
+#define TZ_Australia_Brisbane	("AEST-10")
+#define TZ_Australia_Broken_Hill	("ACST-9:30ACDT,M10.1.0,M4.1.0/3")
+#define TZ_Australia_Currie	("AEST-10AEDT,M10.1.0,M4.1.0/3")
+#define TZ_Australia_Darwin	("ACST-9:30")
+#define TZ_Australia_Eucla	("<+0845>-8:45")
+#define TZ_Australia_Hobart	("AEST-10AEDT,M10.1.0,M4.1.0/3")
+#define TZ_Australia_Lindeman	("AEST-10")
+#define TZ_Australia_Lord_Howe	("<+1030>-10:30<+11>-11,M10.1.0,M4.1.0")
+#define TZ_Australia_Melbourne	("AEST-10AEDT,M10.1.0,M4.1.0/3")
+#define TZ_Australia_Perth	("AWST-8")
+#define TZ_Australia_Sydney	("AEST-10AEDT,M10.1.0,M4.1.0/3")
+#define TZ_Europe_Amsterdam	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Andorra	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Astrakhan	("<+04>-4")
+#define TZ_Europe_Athens	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Belgrade	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Berlin	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Bratislava	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Brussels	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Bucharest	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Budapest	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Busingen	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Chisinau	("EET-2EEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Copenhagen	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Dublin	("IST-1GMT0,M10.5.0,M3.5.0/1")
+#define TZ_Europe_Gibraltar	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Guernsey	("GMT0BST,M3.5.0/1,M10.5.0")
+#define TZ_Europe_Helsinki	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Isle_of_Man	("GMT0BST,M3.5.0/1,M10.5.0")
+#define TZ_Europe_Istanbul	("<+03>-3")
+#define TZ_Europe_Jersey	("GMT0BST,M3.5.0/1,M10.5.0")
+#define TZ_Europe_Kaliningrad	("EET-2")
+#define TZ_Europe_Kiev	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Kirov	("MSK-3")
+#define TZ_Europe_Lisbon	("WET0WEST,M3.5.0/1,M10.5.0")
+#define TZ_Europe_Ljubljana	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_London	("GMT0BST,M3.5.0/1,M10.5.0")
+#define TZ_Europe_Luxembourg	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Madrid	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Malta	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Mariehamn	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Minsk	("<+03>-3")
+#define TZ_Europe_Monaco	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Moscow	("MSK-3")
+#define TZ_Europe_Oslo	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Paris	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Podgorica	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Prague	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Riga	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Rome	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Samara	("<+04>-4")
+#define TZ_Europe_San_Marino	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Sarajevo	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Saratov	("<+04>-4")
+#define TZ_Europe_Simferopol	("MSK-3")
+#define TZ_Europe_Skopje	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Sofia	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Stockholm	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Tallinn	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Tirane	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Ulyanovsk	("<+04>-4")
+#define TZ_Europe_Uzhgorod	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Vaduz	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Vatican	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Vienna	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Vilnius	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Volgograd	("MSK-3")
+#define TZ_Europe_Warsaw	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Zagreb	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Europe_Zaporozhye	("EET-2EEST,M3.5.0/3,M10.5.0/4")
+#define TZ_Europe_Zurich	("CET-1CEST,M3.5.0,M10.5.0/3")
+#define TZ_Indian_Antananarivo	("EAT-3")
+#define TZ_Indian_Chagos	("<+06>-6")
+#define TZ_Indian_Christmas	("<+07>-7")
+#define TZ_Indian_Cocos	("<+0630>-6:30")
+#define TZ_Indian_Comoro	("EAT-3")
+#define TZ_Indian_Kerguelen	("<+05>-5")
+#define TZ_Indian_Mahe	("<+04>-4")
+#define TZ_Indian_Maldives	("<+05>-5")
+#define TZ_Indian_Mauritius	("<+04>-4")
+#define TZ_Indian_Mayotte	("EAT-3")
+#define TZ_Indian_Reunion	("<+04>-4")
+#define TZ_Pacific_Apia	("<+13>-13")
+#define TZ_Pacific_Auckland	("NZST-12NZDT,M9.5.0,M4.1.0/3")
+#define TZ_Pacific_Bougainville	("<+11>-11")
+#define TZ_Pacific_Chatham	("<+1245>-12:45<+1345>,M9.5.0/2:45,M4.1.0/3:45")
+#define TZ_Pacific_Chuuk	("<+10>-10")
+#define TZ_Pacific_Easter	("<-06>6<-05>,M9.1.6/22,M4.1.6/22")
+#define TZ_Pacific_Efate	("<+11>-11")
+#define TZ_Pacific_Enderbury	("<+13>-13")
+#define TZ_Pacific_Fakaofo	("<+13>-13")
+#define TZ_Pacific_Fiji	("<+12>-12")
+#define TZ_Pacific_Funafuti	("<+12>-12")
+#define TZ_Pacific_Galapagos	("<-06>6")
+#define TZ_Pacific_Gambier	("<-09>9")
+#define TZ_Pacific_Guadalcanal	("<+11>-11")
+#define TZ_Pacific_Guam	("ChST-10")
+#define TZ_Pacific_Honolulu	("HST10")
+#define TZ_Pacific_Kiritimati	("<+14>-14")
+#define TZ_Pacific_Kosrae	("<+11>-11")
+#define TZ_Pacific_Kwajalein	("<+12>-12")
+#define TZ_Pacific_Majuro	("<+12>-12")
+#define TZ_Pacific_Marquesas	("<-0930>9:30")
+#define TZ_Pacific_Midway	("SST11")
+#define TZ_Pacific_Nauru	("<+12>-12")
+#define TZ_Pacific_Niue	("<-11>11")
+#define TZ_Pacific_Norfolk	("<+11>-11<+12>,M10.1.0,M4.1.0/3")
+#define TZ_Pacific_Noumea	("<+11>-11")
+#define TZ_Pacific_Pago_Pago	("SST11")
+#define TZ_Pacific_Palau	("<+09>-9")
+#define TZ_Pacific_Pitcairn	("<-08>8")
+#define TZ_Pacific_Pohnpei	("<+11>-11")
+#define TZ_Pacific_Port_Moresby	("<+10>-10")
+#define TZ_Pacific_Rarotonga	("<-10>10")
+#define TZ_Pacific_Saipan	("ChST-10")
+#define TZ_Pacific_Tahiti	("<-10>10")
+#define TZ_Pacific_Tarawa	("<+12>-12")
+#define TZ_Pacific_Tongatapu	("<+13>-13")
+#define TZ_Pacific_Wake	("<+12>-12")
+#define TZ_Pacific_Wallis	("<+12>-12")
+#define TZ_Etc_GMT	("GMT0")
+#define TZ_Etc_GMTm0	("GMT0")
+#define TZ_Etc_GMTm1	("<+01>-1")
+#define TZ_Etc_GMTm2	("<+02>-2")
+#define TZ_Etc_GMTm3	("<+03>-3")
+#define TZ_Etc_GMTm4	("<+04>-4")
+#define TZ_Etc_GMTm5	("<+05>-5")
+#define TZ_Etc_GMTm6	("<+06>-6")
+#define TZ_Etc_GMTm7	("<+07>-7")
+#define TZ_Etc_GMTm8	("<+08>-8")
+#define TZ_Etc_GMTm9	("<+09>-9")
+#define TZ_Etc_GMTm10	("<+10>-10")
+#define TZ_Etc_GMTm11	("<+11>-11")
+#define TZ_Etc_GMTm12	("<+12>-12")
+#define TZ_Etc_GMTm13	("<+13>-13")
+#define TZ_Etc_GMTm14	("<+14>-14")
+#define TZ_Etc_GMT0	("GMT0")
+#define TZ_Etc_GMTp0	("GMT0")
+#define TZ_Etc_GMTp1	("<-01>1")
+#define TZ_Etc_GMTp2	("<-02>2")
+#define TZ_Etc_GMTp3	("<-03>3")
+#define TZ_Etc_GMTp4	("<-04>4")
+#define TZ_Etc_GMTp5	("<-05>5")
+#define TZ_Etc_GMTp6	("<-06>6")
+#define TZ_Etc_GMTp7	("<-07>7")
+#define TZ_Etc_GMTp8	("<-08>8")
+#define TZ_Etc_GMTp9	("<-09>9")
+#define TZ_Etc_GMTp10	("<-10>10")
+#define TZ_Etc_GMTp11	("<-11>11")
+#define TZ_Etc_GMTp12	("<-12>12")
+#define TZ_Etc_UCT	("UTC0")
+#define TZ_Etc_UTC	("UTC0")
+#define TZ_Etc_Greenwich	("GMT0")
+#define TZ_Etc_Universal	("UTC0")
+#define TZ_Etc_Zulu	("UTC0")

cores/rp2040/Tone.cpp

@@ -56,7 +56,7 @@ int64_t _stopTonePIO(alarm_id_t id, void *user_data) {
 }
 
 void tone(uint8_t pin, unsigned int frequency, unsigned long duration) {
-    if (pin > 29) {
+    if (pin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal pin in tone (%d)\n", pin);
         return;
     }
@@ -81,7 +81,7 @@ void tone(uint8_t pin, unsigned int frequency, unsigned long duration) {
         newTone = new Tone();
         newTone->pin = pin;
         pinMode(pin, OUTPUT);
-        if (!_tone2Pgm.prepare(&newTone->pio, &newTone->sm, &newTone->off)) {
+        if (!_tone2Pgm.prepare(&newTone->pio, &newTone->sm, &newTone->off, pin, 1)) {
             DEBUGCORE("ERROR: tone unable to start, out of PIO resources\n");
             // ERROR, no free slots
             delete newTone;
@@ -118,7 +118,7 @@ void tone(uint8_t pin, unsigned int frequency, unsigned long duration) {
 void noTone(uint8_t pin) {
     CoreMutex m(&_toneMutex);
 
-    if ((pin > 29) || !m) {
+    if ((pin > __GPIOCNT) || !m) {
         DEBUGCORE("ERROR: Illegal pin in tone (%d)\n", pin);
         return;
     }

cores/rp2040/_freertos.cpp

@@ -60,45 +60,3 @@ SemaphoreHandle_t __get_freertos_mutex_for_ptr(mutex_t *m, bool recursive) {
     }
     return nullptr; // Need to make space for more mutex maps!
 }
-
-
-// The HW Random code needs a precise sleep_until() in order to assure it
-// grabs the ROSC bit when it wants.  Unfortunately, under FreeRTOS the
-// sleep_until() becomes imprecise and the "did I get the bit when I wanted"
-// check in the pico_rand code always fails and you get an infinite loop.
-
-// This block wraps the 2 get_rand calls to set a flag to convert
-// sleep_until() (which can do a task swap and cause bad timing) into a
-// busy wait.
-
-extern "C" {
-    static bool __inRand = false;
-
-    extern uint64_t __real_get_rand_64();
-    uint64_t __wrap_get_rand_64() {
-        if (__isFreeRTOS) {
-            rp2040.idleOtherCore();
-            __inRand = true;
-            auto r = __real_get_rand_64();
-            __inRand = false;
-            rp2040.resumeOtherCore();
-            return r;
-        } else {
-            return __real_get_rand_64();
-        }
-    }
-
-    uint32_t __wrap_get_rand_32() {
-        return (uint32_t) __wrap_get_rand_64();
-    }
-
-    extern void __real_sleep_until(absolute_time_t t);
-    void __wrap_sleep_until(absolute_time_t t) {
-        if (__inRand) {
-            busy_wait_until(t);
-        } else {
-            __real_sleep_until(t);
-        }
-    }
-
-}

cores/rp2040/_freertos.h

@@ -31,12 +31,10 @@ extern bool __isFreeRTOS;
 extern volatile bool __freeRTOSinitted;
 
 extern "C" {
-#ifndef INC_FREERTOS_H
     struct QueueDefinition; /* Using old naming convention so as not to break kernel aware debuggers. */
     typedef struct QueueDefinition   * QueueHandle_t;
     typedef QueueHandle_t SemaphoreHandle_t;
     typedef int32_t BaseType_t;
-#endif
 
     extern bool __freertos_check_if_in_isr() __attribute__((weak));
 
@@ -56,5 +54,8 @@ extern "C" {
 
     extern void __freertos_idle_other_core() __attribute__((weak));
     extern void __freertos_resume_other_core() __attribute__((weak));
+
+    extern void __freertos_task_exit_critical() __attribute__((weak));
+    extern void __freertos_task_enter_critical() __attribute__((weak));
 }
 extern SemaphoreHandle_t __get_freertos_mutex_for_ptr(mutex_t *m, bool recursive = false);

cores/rp2040/ccount.pio.h

@@ -14,6 +14,7 @@
 
 #define ccount_wrap_target 0
 #define ccount_wrap 1
+#define ccount_pio_version 0
 
 static const uint16_t ccount_program_instructions[] = {
     //     .wrap_target
@@ -27,6 +28,10 @@ static const struct pio_program ccount_program = {
     .instructions = ccount_program_instructions,
     .length = 2,
     .origin = -1,
+    .pio_version = 0,
+#if PICO_PIO_VERSION > 0
+    .used_gpio_ranges = 0x0
+#endif
 };
 
 static inline pio_sm_config ccount_program_get_default_config(uint offset) {

cores/rp2040/ctocppcallback.h

@@ -0,0 +1,32 @@
+// Use to create a callback thunk from C to C++
+// #define CCALLBACKNAME to a unique per-file name and #include this file
+// To make a CB use a define of the form:
+/*
+    #define PACKETHANDLERCB(class, cbFcn) \
+    (CCALLBACKNAME<void(uint8_t, uint16_t, uint8_t*, uint16_t), __COUNTER__>::func = std::bind(&class::cbFcn, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4), \
+    static_cast<btstack_packet_handler_t>(<CCALLBACKNAMEvoid(uint8_t, uint16_t, uint8_t*, uint16_t), __COUNTER__ - 1>::callback))
+*/
+
+#include <functional>
+
+// Thank you to https://stackoverflow.com/questions/66474621/multiple-non-static-callbacks-of-c-member-functions for the following beautiful hack
+
+#ifndef CCALLBACKNAME
+#define CCALLBACKNAME _CCallback
+#endif
+
+template <typename T, int tag>
+struct CCALLBACKNAME;
+
+template <typename Ret, typename... Params, int tag>
+struct CCALLBACKNAME<Ret(Params...), tag> {
+    template <typename... Args>
+    static Ret callback(Args... args) {
+        return func(args...);
+    }
+    int _tag = tag;
+    static std::function<Ret(Params...)> func;
+};
+
+template <typename Ret, typename... Params, int tag>
+std::function<Ret(Params...)> CCALLBACKNAME<Ret(Params...), tag>::func;

cores/rp2040/lwip_wrap.cpp

@@ -18,6 +18,7 @@
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
+#include <Arduino.h>
 #include <pico/mutex.h>
 #include <lwip/pbuf.h>
 #include <lwip/udp.h>
@@ -25,21 +26,76 @@
 #include <lwip/dns.h>
 #include <lwip/raw.h>
 #include <lwip/timeouts.h>
+#ifdef PICO_RP2040
 #include <pico/cyw43_arch.h>
+#endif
+#include <pico/mutex.h>
+#include <sys/lock.h>
+#include "_xoshiro.h"
+
+extern void ethernet_arch_lwip_begin() __attribute__((weak));
+extern void ethernet_arch_lwip_end() __attribute__((weak));
+extern void ethernet_arch_lwip_gpio_mask() __attribute__((weak));
+extern void ethernet_arch_lwip_gpio_unmask() __attribute__((weak));
+
+auto_init_recursive_mutex(__lwipMutex); // Only for case with no Ethernet or PicoW, but still doing LWIP (PPP?)
 
 class LWIPMutex {
 public:
     LWIPMutex() {
-        cyw43_arch_lwip_begin();
+        if (ethernet_arch_lwip_gpio_mask)  {
+            ethernet_arch_lwip_gpio_mask();
+        }
+#if defined(ARDUINO_RASPBERRY_PI_PICO_W)
+        if (rp2040.isPicoW()) {
+            cyw43_arch_lwip_begin();
+            return;
+        }
+#endif
+        if (ethernet_arch_lwip_begin) {
+            ethernet_arch_lwip_begin();
+        } else {
+            recursive_mutex_enter_blocking(&__lwipMutex);
+        }
     }
 
     ~LWIPMutex() {
-        cyw43_arch_lwip_end();
+#if defined(ARDUINO_RASPBERRY_PI_PICO_W)
+        if (rp2040.isPicoW()) {
+            cyw43_arch_lwip_end();
+        } else {
+#endif
+            if (ethernet_arch_lwip_end) {
+                ethernet_arch_lwip_end();
+            } else {
+                recursive_mutex_exit(&__lwipMutex);
+            }
+#if defined(ARDUINO_RASPBERRY_PI_PICO_W)
+        }
+#endif
+        if (ethernet_arch_lwip_gpio_unmask) {
+            ethernet_arch_lwip_gpio_unmask();
+        }
     }
 };
 
 extern "C" {
 
+    static XoshiroCpp::Xoshiro256PlusPlus *_lwip_rng = nullptr;
+    // Random number generator for LWIP
+    unsigned long __lwip_rand() {
+        return (unsigned long)(*_lwip_rng)();
+    }
+
+    // Avoid calling lwip_init multiple times
+    extern void __real_lwip_init();
+    void __wrap_lwip_init() {
+        if (!_lwip_rng) {
+            _lwip_rng = new XoshiroCpp::Xoshiro256PlusPlus(micros() * rp2040.getCycleCount());
+            __real_lwip_init();
+        }
+    }
+
     extern u8_t __real_pbuf_header(struct pbuf *p, s16_t header_size);
     u8_t __wrap_pbuf_header(struct pbuf *p, s16_t header_size) {
         LWIPMutex m;
@@ -193,19 +249,19 @@ extern "C" {
     extern void __real_tcp_setprio(struct tcp_pcb *pcb, u8_t prio);
     void __wrap_tcp_setprio(struct tcp_pcb *pcb, u8_t prio) {
         LWIPMutex m;
-        return __real_tcp_setprio(pcb, prio);
+        __real_tcp_setprio(pcb, prio);
     }
 
     extern void __real_tcp_backlog_delayed(struct tcp_pcb* pcb);
     void __wrap_tcp_backlog_delayed(struct tcp_pcb* pcb) {
         LWIPMutex m;
-        return __real_tcp_backlog_delayed(pcb);
+        __real_tcp_backlog_delayed(pcb);
     }
 
     extern void __real_tcp_backlog_accepted(struct tcp_pcb* pcb);
     void __wrap_tcp_backlog_accepted(struct tcp_pcb* pcb) {
         LWIPMutex m;
-        return __real_tcp_backlog_accepted(pcb);
+        __real_tcp_backlog_accepted(pcb);
     }
     extern struct udp_pcb *__real_udp_new(void);
     struct udp_pcb *__wrap_udp_new(void) {
@@ -304,4 +360,16 @@ extern "C" {
         __real_raw_remove(pcb);
     }
 
+    extern struct netif *__real_netif_add(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input);
+    struct netif *__wrap_netif_add(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input) {
+        LWIPMutex m;
+        return __real_netif_add(netif, ipaddr, netmask, gw, state, init, input);
+    }
+
+    extern void __real_netif_remove(struct netif *netif);
+    void __wrap_netif_remove(struct netif *netif) {
+        LWIPMutex m;
+        __real_netif_remove(netif);
+    }
+
 }; // extern "C"

cores/rp2040/main.cpp

@@ -27,6 +27,7 @@
 RP2040 rp2040;
 extern "C" {
     volatile bool __otherCoreIdled = false;
+    uint32_t* core1_separate_stack_address = nullptr;
 };
 
 extern void setup();
@@ -38,12 +39,14 @@ extern void startFreeRTOS() __attribute__((weak));
 bool __isFreeRTOS;
 volatile bool __freeRTOSinitted;
 
+extern void __EnableBluetoothDebug(Print &);
 
 // Weak empty variant initialization. May be redefined by variant files.
 void initVariant() __attribute__((weak));
 void initVariant() { }
 
 // Optional 2nd core setup and loop
+bool core1_separate_stack __attribute__((weak)) = false;
 extern void setup1() __attribute__((weak));
 extern void loop1() __attribute__((weak));
 extern "C" void main1() {
@@ -76,7 +79,7 @@ extern void __loop() {
 static struct _reent *_impure_ptr1 = nullptr;
 
 extern "C" int main() {
-#if F_CPU != 125000000
+#if (defined(PICO_RP2040) && (F_CPU != 125000000)) || (defined(PICO_RP2350) && (F_CPU != 150000000))
     set_sys_clock_khz(F_CPU / 1000, true);
 #endif
 
@@ -117,6 +120,9 @@ extern "C" int main() {
 #if defined DEBUG_RP2040_PORT
     if (!__isFreeRTOS) {
         DEBUG_RP2040_PORT.begin(115200);
+#if (defined(ENABLE_BLUETOOTH) || defined(ENABLE_BLE)) && defined(DEBUG_RP2040_BLUETOOTH)
+        __EnableBluetoothDebug(DEBUG_RP2040_PORT);
+#endif
     }
 #endif
 
@@ -132,7 +138,12 @@ extern "C" int main() {
     if (!__isFreeRTOS) {
         if (setup1 || loop1) {
             delay(1); // Needed to make Picoprobe upload start 2nd core
-            multicore_launch_core1(main1);
+            if (core1_separate_stack) {
+                core1_separate_stack_address = (uint32_t*)malloc(0x2000);
+                multicore_launch_core1_with_stack(main1, core1_separate_stack_address, 0x2000);
+            } else {
+                multicore_launch_core1(main1);
+            }
         }
         setup();
         while (true) {

cores/rp2040/malloc-lock.cpp

@@ -19,11 +19,25 @@
 */
 
 #include <Arduino.h>
+#include <malloc.h>
+#include <reent.h>
+#include "psram.h"
 
 extern "C" void *__real_malloc(size_t size);
 extern "C" void *__real_calloc(size_t count, size_t size);
 extern "C" void *__real_realloc(void *mem, size_t size);
 extern "C" void __real_free(void *mem);
+extern "C" struct mallinfo __real_mallinfo();
+
+#ifdef RP2350_PSRAM_CS
+extern "C" {
+    extern uint8_t __psram_start__;
+    extern uint8_t __psram_heap_start__;
+    void __malloc_lock(struct _reent *ptr);
+    void __malloc_unlock(struct _reent *ptr);
+    static void *__ram_start = (void *)0x20000000; // TODO - Is there a SDK exposed variable/macro?
+}
+#endif
 
 extern "C" void *__wrap_malloc(size_t size) {
     noInterrupts();
@@ -39,15 +53,72 @@ extern "C" void *__wrap_calloc(size_t count, size_t size) {
     return rc;
 }
 
-extern "C" void *__wrap_realloc(void *mem, size_t size) {
+#ifdef RP2350_PSRAM_CS
+// Utilize the existing malloc lock infrastructure and interrupt blocking
+// to work with multicore and FreeRTOS
+extern "C" void *pmalloc(size_t size) {
     noInterrupts();
-    void *rc = __real_realloc(mem, size);
+    __malloc_lock(__getreent());
+    auto rc = __psram_malloc(size);
+    __malloc_unlock(__getreent());
+    interrupts();
+    return rc;
+}
+
+extern "C" void *pcalloc(size_t count, size_t size) {
+    noInterrupts();
+    __malloc_lock(__getreent());
+    auto rc = __psram_calloc(count, size);
+    __malloc_unlock(__getreent());
+    interrupts();
+    return rc;
+}
+#else
+// No PSRAM, always fail
+extern "C" void *pmalloc(size_t size) {
+    return nullptr;
+}
+
+extern "C" void *pcalloc(size_t count, size_t size) {
+    return nullptr;
+}
+#endif
+
+extern "C" void *__wrap_realloc(void *mem, size_t size) {
+    void *rc;
+    noInterrupts();
+#ifdef RP2350_PSRAM_CS
+    if (mem && (mem < __ram_start)) {
+        rc = __psram_realloc(mem, size);
+    } else {
+        rc = __real_realloc(mem, size);
+    }
+#else
+    rc = __real_realloc(mem, size);
+#endif
     interrupts();
     return rc;
 }
 
 extern "C" void __wrap_free(void *mem) {
     noInterrupts();
+#ifdef RP2350_PSRAM_CS
+    if (mem && (mem < __ram_start)) {
+        __psram_free(mem);
+    } else {
+        __real_free(mem);
+    }
+#else
     __real_free(mem);
+#endif
     interrupts();
 }
+
+extern "C" struct mallinfo __wrap_mallinfo() {
+    noInterrupts();
+    __malloc_lock(__getreent());
+    auto ret = __real_mallinfo();
+    __malloc_unlock(__getreent());
+    interrupts();
+    return ret;
+}

cores/rp2040/pio_uart.pio

@@ -39,35 +39,13 @@ wait_bit:
     jmp y-- wait_bit
     jmp x-- bitloop
 
-    
-
-; inverted-logic version (inverts the stop bit)
-
-.program pio_tx_inv
-.side_set 1 opt
-
-
-; We shift out the start and stop bit as part of the FIFO
-    set x, 9
-
-    pull               side 0 ; Force stop bit low
-
-; Send the bits
-bitloop:
-    out pins, 1
-    mov y, isr                ; ISR is loaded by the setup routine with the period-1 count
-wait_bit:
-    jmp y-- wait_bit
-    jmp x-- bitloop
-
-
 % c-sdk {
 
 static inline void pio_tx_program_init(PIO pio, uint sm, uint offset, uint pin_tx) {
     // Tell PIO to initially drive output-high on the selected pin, then map PIO
     // onto that pin with the IO muxes.
-    pio_sm_set_pins_with_mask(pio, sm, 1u << pin_tx, 1u << pin_tx);
-    pio_sm_set_pindirs_with_mask(pio, sm, 1u << pin_tx, 1u << pin_tx);
+    pio_sm_set_set_pins(pio, sm, pin_tx, 1);
+    pio_sm_set_consecutive_pindirs(pio, sm, pin_tx, 1, true);
     pio_gpio_init(pio, pin_tx);
 
     pio_sm_config c = pio_tx_program_get_default_config(offset);
@@ -110,28 +88,6 @@ wait_half:
     
     push                ; Stuff it and wait for next start
 
-
-.program pio_rx_inv
-
-; IN pin 0 and JMP pin are both mapped to the GPIO used as UART RX.
-
-start:
-    set x, 18           ; Preload bit counter...we'll shift in the start bit and stop bit, and each bit will be double-recorded (to be fixed by RP2040 code)
-    wait 1 pin 0        ; Stall until start bit is asserted
-
-bitloop:
-   ; Delay until 1/2 way into the bit time
-    mov y, osr
-wait_half:
-    jmp y-- wait_half
-
-    ; Read in the bit
-    in pins, 1          ; Shift data bit into ISR
-    jmp x-- bitloop     ; Loop all bits
-    
-    push                ; Stuff it and wait for next start
-
-
 % c-sdk {
 static inline void pio_rx_program_init(PIO pio, uint sm, uint offset, uint pin) {
     pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false);

cores/rp2040/pio_uart.pio.h

@@ -14,6 +14,7 @@
 
 #define pio_tx_wrap_target 0
 #define pio_tx_wrap 5
+#define pio_tx_pio_version 0
 
 static const uint16_t pio_tx_program_instructions[] = {
     //     .wrap_target
@@ -31,6 +32,10 @@ static const struct pio_program pio_tx_program = {
     .instructions = pio_tx_program_instructions,
     .length = 6,
     .origin = -1,
+    .pio_version = 0,
+#if PICO_PIO_VERSION > 0
+    .used_gpio_ranges = 0x0
+#endif
 };
 
 static inline pio_sm_config pio_tx_program_get_default_config(uint offset) {
@@ -39,45 +44,12 @@ static inline pio_sm_config pio_tx_program_get_default_config(uint offset) {
     sm_config_set_sideset(&c, 2, true, false);
     return c;
 }
-#endif
-
-// ---------- //
-// pio_tx_inv //
-// ---------- //
-
-#define pio_tx_inv_wrap_target 0
-#define pio_tx_inv_wrap 5
-
-static const uint16_t pio_tx_inv_program_instructions[] = {
-    //     .wrap_target
-    0xe029, //  0: set    x, 9
-    0x90a0, //  1: pull   block           side 0
-    0x6001, //  2: out    pins, 1
-    0xa046, //  3: mov    y, isr
-    0x0084, //  4: jmp    y--, 4
-    0x0042, //  5: jmp    x--, 2
-    //     .wrap
-};
-
-#if !PICO_NO_HARDWARE
-static const struct pio_program pio_tx_inv_program = {
-    .instructions = pio_tx_inv_program_instructions,
-    .length = 6,
-    .origin = -1,
-};
-
-static inline pio_sm_config pio_tx_inv_program_get_default_config(uint offset) {
-    pio_sm_config c = pio_get_default_sm_config();
-    sm_config_set_wrap(&c, offset + pio_tx_inv_wrap_target, offset + pio_tx_inv_wrap);
-    sm_config_set_sideset(&c, 2, true, false);
-    return c;
-}
 
 static inline void pio_tx_program_init(PIO pio, uint sm, uint offset, uint pin_tx) {
     // Tell PIO to initially drive output-high on the selected pin, then map PIO
     // onto that pin with the IO muxes.
-    pio_sm_set_pins_with_mask(pio, sm, 1u << pin_tx, 1u << pin_tx);
-    pio_sm_set_pindirs_with_mask(pio, sm, 1u << pin_tx, 1u << pin_tx);
+    pio_sm_set_set_pins(pio, sm, pin_tx, 1);
+    pio_sm_set_consecutive_pindirs(pio, sm, pin_tx, 1, true);
     pio_gpio_init(pio, pin_tx);
     pio_sm_config c = pio_tx_program_get_default_config(offset);
     // OUT shifts to right, no autopull
@@ -100,6 +72,7 @@ static inline void pio_tx_program_init(PIO pio, uint sm, uint offset, uint pin_t
 
 #define pio_rx_wrap_target 0
 #define pio_rx_wrap 6
+#define pio_rx_pio_version 0
 
 static const uint16_t pio_rx_program_instructions[] = {
     //     .wrap_target
@@ -118,6 +91,10 @@ static const struct pio_program pio_rx_program = {
     .instructions = pio_rx_program_instructions,
     .length = 7,
     .origin = -1,
+    .pio_version = 0,
+#if PICO_PIO_VERSION > 0
+    .used_gpio_ranges = 0x0
+#endif
 };
 
 static inline pio_sm_config pio_rx_program_get_default_config(uint offset) {
@@ -125,39 +102,6 @@ static inline pio_sm_config pio_rx_program_get_default_config(uint offset) {
     sm_config_set_wrap(&c, offset + pio_rx_wrap_target, offset + pio_rx_wrap);
     return c;
 }
-#endif
-
-// ---------- //
-// pio_rx_inv //
-// ---------- //
-
-#define pio_rx_inv_wrap_target 0
-#define pio_rx_inv_wrap 6
-
-static const uint16_t pio_rx_inv_program_instructions[] = {
-    //     .wrap_target
-    0xe032, //  0: set    x, 18
-    0x20a0, //  1: wait   1 pin, 0
-    0xa047, //  2: mov    y, osr
-    0x0083, //  3: jmp    y--, 3
-    0x4001, //  4: in     pins, 1
-    0x0042, //  5: jmp    x--, 2
-    0x8020, //  6: push   block
-    //     .wrap
-};
-
-#if !PICO_NO_HARDWARE
-static const struct pio_program pio_rx_inv_program = {
-    .instructions = pio_rx_inv_program_instructions,
-    .length = 7,
-    .origin = -1,
-};
-
-static inline pio_sm_config pio_rx_inv_program_get_default_config(uint offset) {
-    pio_sm_config c = pio_get_default_sm_config();
-    sm_config_set_wrap(&c, offset + pio_rx_inv_wrap_target, offset + pio_rx_inv_wrap);
-    return c;
-}
 
 static inline void pio_rx_program_init(PIO pio, uint sm, uint offset, uint pin) {
     pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false);

cores/rp2040/posix.cpp

@@ -33,7 +33,9 @@
 
 extern "C" int errno;
 
-extern "C" ssize_t _write(int fd, const void *buf, size_t count) {
+extern "C"
+__attribute((weak))
+ssize_t _write(int fd, const void *buf, size_t count) {
 #if defined DEBUG_RP2040_PORT
     (void) fd;
     return DEBUG_RP2040_PORT.write((const char *)buf, count);
@@ -45,7 +47,9 @@ extern "C" ssize_t _write(int fd, const void *buf, size_t count) {
 #endif
 }
 
-extern "C" int _chown(const char *path, uid_t owner, gid_t group) {
+extern "C"
+__attribute((weak))
+int _chown(const char *path, uid_t owner, gid_t group) {
     (void) path;
     (void) owner;
     (void) group;
@@ -53,7 +57,9 @@ extern "C" int _chown(const char *path, uid_t owner, gid_t group) {
     return -1;
 }
 
-extern "C" int _close(int fd) {
+extern "C"
+__attribute((weak))
+int _close(int fd) {
     (void) fd;
     errno = ENOSYS;
     return -1;
@@ -72,7 +78,9 @@ extern "C" int _fork(void) {
     return -1;
 }
 
-extern "C" int _fstat(int fd, struct stat *st) {
+extern "C"
+__attribute((weak))
+int _fstat(int fd, struct stat *st) {
     (void) fd;
     (void) st;
     errno = ENOSYS;
@@ -115,7 +123,9 @@ extern "C" void __setSystemTime(unsigned long long sec, unsigned long usec) {
     __timedelta_us = newnow_us - now_us;
 }
 
-extern "C" int _isatty(int file) {
+extern "C"
+__attribute((weak))
+int _isatty(int file) {
     (void) file;
     errno = ENOSYS;
     return 0;
@@ -128,14 +138,18 @@ extern "C" int _kill(int pid, int sig) {
     return -1;
 }
 
-extern "C" int _link(char *existing, char *newlink) {
+extern "C"
+__attribute((weak))
+int _link(char *existing, char *newlink) {
     (void) existing;
     (void) newlink;
     errno = ENOSYS;
     return -1;
 }
 
-extern "C" int _lseek(int   file, int   ptr, int   dir) {
+extern "C"
+__attribute((weak))
+int _lseek(int   file, int   ptr, int   dir) {
     (void) file;
     (void) ptr;
     (void) dir;
@@ -143,7 +157,9 @@ extern "C" int _lseek(int   file, int   ptr, int   dir) {
     return -1;
 }
 
-extern "C" int _open(char *file, int   flags, int   mode) {
+extern "C"
+__attribute((weak))
+int _open(char *file, int   flags, int   mode) {
     (void) file;
     (void) flags;
     (void) mode;
@@ -151,7 +167,9 @@ extern "C" int _open(char *file, int   flags, int   mode) {
     return -1;
 }
 
-extern "C" int _read(int   file, char *ptr, int   len) {
+extern "C"
+__attribute((weak))
+int _read(int   file, char *ptr, int   len) {
     (void) file;
     (void) ptr;
     (void) len;
@@ -159,7 +177,9 @@ extern "C" int _read(int   file, char *ptr, int   len) {
     return -1;
 }
 
-extern "C" int _readlink(const char *path, char *buf, size_t bufsize) {
+extern "C"
+__attribute((weak))
+int _readlink(const char *path, char *buf, size_t bufsize) {
     (void) path;
     (void) buf;
     (void) bufsize;
@@ -167,14 +187,18 @@ extern "C" int _readlink(const char *path, char *buf, size_t bufsize) {
     return -1;
 }
 
-extern "C" int _stat(const char  *file, struct stat *st) {
+extern "C"
+__attribute((weak))
+int _stat(const char  *file, struct stat *st) {
     (void) file;
     (void) st;
     errno = ENOSYS;
     return -1;
 }
 
-extern "C" int _symlink(const char *path1, const char *path2) {
+extern "C"
+__attribute((weak))
+int _symlink(const char *path1, const char *path2) {
     (void) path1;
     (void) path2;
     errno = ENOSYS;
@@ -187,7 +211,9 @@ extern "C" clock_t _times(struct tms *buf) {
     return -1;
 }
 
-extern "C" int _unlink(char *name) {
+extern "C"
+__attribute((weak))
+int _unlink(char *name) {
     (void) name;
     errno = ENOSYS;
     return -1;

cores/rp2040/psram.cpp

@@ -0,0 +1,437 @@
+// Originally from https://github.com/sparkfun/sparkfun-pico
+/**
+    @file sfe_psram.c
+
+    @brief This file contains a function that is used to detect and initialize PSRAM on
+    SparkFun rp2350 boards.
+*/
+
+/*
+    The MIT License (MIT)
+
+    Copyright (c) 2024 SparkFun Electronics
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions: The
+    above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED
+    "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+    NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+    PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+// Hacked by Earle Philhower to work with the Arduino-Pico core
+
+#include <Arduino.h>
+
+#ifdef RP2350_PSRAM_CS
+
+#include <hardware/address_mapped.h>
+#include <hardware/clocks.h>
+#include <hardware/gpio.h>
+#include <hardware/regs/addressmap.h>
+#include <hardware/spi.h>
+#include <hardware/structs/qmi.h>
+#include <hardware/structs/xip_ctrl.h>
+#include <pico/runtime_init.h>
+
+// Include TLSF in this compilation unit
+#include "../../lib/tlsf/tlsf.c"
+static tlsf_t _mem_heap = nullptr;
+static pool_t _mem_psram_pool = nullptr;
+
+// PSRAM heap minus PSRAM global/static variables from the linker
+extern "C" {
+    extern uint8_t __psram_start__;
+    extern uint8_t __psram_heap_start__;
+}
+
+static bool _bInitalized = false;
+size_t __psram_size = 0;
+size_t __psram_heap_size = 0;
+
+#define PICO_RUNTIME_INIT_PSRAM "11001" // Towards the end, after alarms
+
+#ifndef RP2350_PSRAM_MAX_SELECT_FS64
+#define RP2350_PSRAM_MAX_SELECT_FS64 (125'000'000)
+#endif
+
+#ifndef RP2350_PSRAM_MIN_DESELECT_FS
+#define RP2350_PSRAM_MIN_DESELECT_FS (50'000'000)
+#endif
+
+#ifndef RP2350_PSRAM_MAX_SCK_HZ
+#define RP2350_PSRAM_MAX_SCK_HZ (109'000'000)
+#endif
+
+#ifndef RP2350_PSRAM_ID
+#define RP2350_PSRAM_ID (0x5D)
+#endif
+
+// DETAILS/
+//
+// SparkFun RP2350 boards use the following PSRAM IC:
+//
+//      apmemory APS6404L-3SQR-ZR
+//      https://www.mouser.com/ProductDetail/AP-Memory/APS6404L-3SQR-ZR?qs=IS%252B4QmGtzzpDOdsCIglviw%3D%3D
+//
+// The origin of this logic is from the Circuit Python code that was downloaded from:
+//     https://github.com/raspberrypi/pico-sdk-rp2350/issues/12#issuecomment-2055274428
+//
+
+// Details on the PSRAM IC that are used during setup/configuration of PSRAM on SparkFun RP2350 boards.
+
+// For PSRAM timing calculations - to use int math, we work in femto seconds (fs) (1e-15),
+// NOTE: This idea is from micro python work on psram..
+
+#define SFE_SEC_TO_FS 1000000000000000ll
+
+// max select pulse width = 8us => 8e6 ns => 8000 ns => 8000 * 1e6 fs => 8000e6 fs
+// Additionally, the MAX select is in units of 64 clock cycles - will use a constant that
+// takes this into account - so 8000e6 fs / 64 = 125e6 fs
+
+const uint32_t SFE_PSRAM_MAX_SELECT_FS64 = RP2350_PSRAM_MAX_SELECT_FS64;
+
+// min deselect pulse width = 50ns => 50 * 1e6 fs => 50e7 fs
+const uint32_t SFE_PSRAM_MIN_DESELECT_FS = RP2350_PSRAM_MIN_DESELECT_FS;
+
+// from psram datasheet - max Freq with VDDat 3.3v - SparkFun RP2350 boards run at 3.3v.
+// If VDD = 3.0 Max Freq is 133 Mhz
+const uint32_t SFE_PSRAM_MAX_SCK_HZ = RP2350_PSRAM_MAX_SCK_HZ;
+
+// PSRAM SPI command codes
+const uint8_t PSRAM_CMD_QUAD_END = 0xF5;
+const uint8_t PSRAM_CMD_QUAD_ENABLE = 0x35;
+const uint8_t PSRAM_CMD_READ_ID = 0x9F;
+const uint8_t PSRAM_CMD_RSTEN = 0x66;
+const uint8_t PSRAM_CMD_RST = 0x99;
+const uint8_t PSRAM_CMD_QUAD_READ = 0xEB;
+const uint8_t PSRAM_CMD_QUAD_WRITE = 0x38;
+const uint8_t PSRAM_CMD_NOOP = 0xFF;
+
+const uint8_t PSRAM_ID = RP2350_PSRAM_ID;
+
+//-----------------------------------------------------------------------------
+/// @brief Communicate directly with the PSRAM IC - validate it is present and return the size
+///
+/// @return size_t The size of the PSRAM
+///
+/// @note This function expects the CS pin set
+static size_t __no_inline_not_in_flash_func(get_psram_size)(void) {
+    size_t psram_size = 0;
+    uint32_t intr_stash = save_and_disable_interrupts();
+
+    // Try and read the PSRAM ID via direct_csr.
+    qmi_hw->direct_csr = 30 << QMI_DIRECT_CSR_CLKDIV_LSB | QMI_DIRECT_CSR_EN_BITS;
+
+    // Need to poll for the cooldown on the last XIP transfer to expire
+    // (via direct-mode BUSY flag) before it is safe to perform the first
+    // direct-mode operation
+    while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_BUSY_BITS) != 0) {
+    }
+
+    // Exit out of QMI in case we've inited already
+    qmi_hw->direct_csr |= QMI_DIRECT_CSR_ASSERT_CS1N_BITS;
+
+    // Transmit the command to exit QPI quad mode - read ID as standard SPI
+    qmi_hw->direct_tx =
+        QMI_DIRECT_TX_OE_BITS | QMI_DIRECT_TX_IWIDTH_VALUE_Q << QMI_DIRECT_TX_IWIDTH_LSB | PSRAM_CMD_QUAD_END;
+
+    while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_BUSY_BITS) != 0) {
+    }
+
+    (void)qmi_hw->direct_rx;
+    qmi_hw->direct_csr &= ~(QMI_DIRECT_CSR_ASSERT_CS1N_BITS);
+
+    // Read the id
+    qmi_hw->direct_csr |= QMI_DIRECT_CSR_ASSERT_CS1N_BITS;
+    uint8_t kgd = 0;
+    uint8_t eid = 0;
+    for (size_t i = 0; i < 7; i++) {
+        qmi_hw->direct_tx = (i == 0 ? PSRAM_CMD_READ_ID : PSRAM_CMD_NOOP);
+
+        while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_TXEMPTY_BITS) == 0) {
+        }
+        while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_BUSY_BITS) != 0) {
+        }
+        if (i == 5) {
+            kgd = qmi_hw->direct_rx;
+        } else if (i == 6) {
+            eid = qmi_hw->direct_rx;
+        } else {
+            (void)qmi_hw->direct_rx;    // just read and discard
+        }
+    }
+
+    // Disable direct csr.
+    qmi_hw->direct_csr &= ~(QMI_DIRECT_CSR_ASSERT_CS1N_BITS | QMI_DIRECT_CSR_EN_BITS);
+
+    // is this the PSRAM we're looking for obi-wan?
+    if (kgd == PSRAM_ID) {
+        // PSRAM size
+        psram_size = 1024 * 1024; // 1 MiB
+        uint8_t size_id = eid >> 5;
+        if (eid == 0x26 || size_id == 2) {
+            psram_size *= 8;
+        } else if (size_id == 0) {
+            psram_size *= 2;
+        } else if (size_id == 1) {
+            psram_size *= 4;
+        }
+    }
+    restore_interrupts(intr_stash);
+    return psram_size;
+}
+//-----------------------------------------------------------------------------
+/// @brief Update the PSRAM timing configuration based on system clock
+///
+/// @note This function expects interrupts to be enabled on entry
+
+static void __no_inline_not_in_flash_func(set_psram_timing)(void) {
+    // Get secs / cycle for the system clock - get before disabling interrupts.
+    uint32_t sysHz = (uint32_t)clock_get_hz(clk_sys);
+
+    // Calculate the clock divider - goal to get clock used for PSRAM <= what
+    // the PSRAM IC can handle - which is defined in SFE_PSRAM_MAX_SCK_HZ
+    volatile uint8_t clockDivider = (sysHz + SFE_PSRAM_MAX_SCK_HZ - 1) / SFE_PSRAM_MAX_SCK_HZ;
+
+    uint32_t intr_stash = save_and_disable_interrupts();
+
+    // Get the clock femto seconds per cycle.
+
+    uint32_t fsPerCycle = SFE_SEC_TO_FS / sysHz;
+
+    // the maxSelect value is defined in units of 64 clock cycles
+    // So maxFS / (64 * fsPerCycle) = maxSelect = SFE_PSRAM_MAX_SELECT_FS64/fsPerCycle
+    volatile uint8_t maxSelect = SFE_PSRAM_MAX_SELECT_FS64 / fsPerCycle;
+
+    //  minDeselect time - in system clock cycle
+    // Must be higher than 50ns (min deselect time for PSRAM) so add a fsPerCycle - 1 to round up
+    // So minFS/fsPerCycle = minDeselect = SFE_PSRAM_MIN_DESELECT_FS/fsPerCycle
+
+    volatile uint8_t minDeselect = (SFE_PSRAM_MIN_DESELECT_FS + fsPerCycle - 1) / fsPerCycle;
+
+    // printf("Max Select: %d, Min Deselect: %d, clock divider: %d\n", maxSelect, minDeselect, clockDivider);
+
+    qmi_hw->m[1].timing = QMI_M1_TIMING_PAGEBREAK_VALUE_1024 << QMI_M1_TIMING_PAGEBREAK_LSB | // Break between pages.
+                          3 << QMI_M1_TIMING_SELECT_HOLD_LSB | // Delay releasing CS for 3 extra system cycles.
+                          1 << QMI_M1_TIMING_COOLDOWN_LSB | 1 << QMI_M1_TIMING_RXDELAY_LSB |
+                          maxSelect << QMI_M1_TIMING_MAX_SELECT_LSB | minDeselect << QMI_M1_TIMING_MIN_DESELECT_LSB |
+                          clockDivider << QMI_M1_TIMING_CLKDIV_LSB;
+
+    restore_interrupts(intr_stash);
+}
+
+
+//-----------------------------------------------------------------------------
+/// @brief The setup_psram function - note that this is not in flash
+///
+///
+static void __no_inline_not_in_flash_func(runtime_init_setup_psram)(/*uint32_t psram_cs_pin*/) {
+    // Set the PSRAM CS pin in the SDK
+    gpio_set_function(RP2350_PSRAM_CS, GPIO_FUNC_XIP_CS1);
+
+    // start with zero size
+    size_t psram_size = get_psram_size();
+
+    // No PSRAM - no dice
+    if (psram_size == 0) {
+        return;
+    }
+
+    uint32_t intr_stash = save_and_disable_interrupts();
+    // Enable quad mode.
+    qmi_hw->direct_csr = 30 << QMI_DIRECT_CSR_CLKDIV_LSB | QMI_DIRECT_CSR_EN_BITS;
+
+    // Need to poll for the cooldown on the last XIP transfer to expire
+    // (via direct-mode BUSY flag) before it is safe to perform the first
+    // direct-mode operation
+    while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_BUSY_BITS) != 0) {
+    }
+
+    // RESETEN, RESET and quad enable
+    for (uint8_t i = 0; i < 3; i++) {
+        qmi_hw->direct_csr |= QMI_DIRECT_CSR_ASSERT_CS1N_BITS;
+        if (i == 0) {
+            qmi_hw->direct_tx = PSRAM_CMD_RSTEN;
+        } else if (i == 1) {
+            qmi_hw->direct_tx = PSRAM_CMD_RST;
+        } else {
+            qmi_hw->direct_tx = PSRAM_CMD_QUAD_ENABLE;
+        }
+
+        while ((qmi_hw->direct_csr & QMI_DIRECT_CSR_BUSY_BITS) != 0) {
+        }
+        qmi_hw->direct_csr &= ~(QMI_DIRECT_CSR_ASSERT_CS1N_BITS);
+        for (size_t j = 0; j < 20; j++) {
+            asm("nop");
+        }
+
+        (void)qmi_hw->direct_rx;
+    }
+
+    // Disable direct csr.
+    qmi_hw->direct_csr &= ~(QMI_DIRECT_CSR_ASSERT_CS1N_BITS | QMI_DIRECT_CSR_EN_BITS);
+
+    // check our interrupts and setup the timing
+    restore_interrupts(intr_stash);
+    set_psram_timing();
+
+    // and now stash interrupts again
+    intr_stash = save_and_disable_interrupts();
+
+    qmi_hw->m[1].rfmt = (QMI_M1_RFMT_PREFIX_WIDTH_VALUE_Q << QMI_M1_RFMT_PREFIX_WIDTH_LSB |
+                         QMI_M1_RFMT_ADDR_WIDTH_VALUE_Q << QMI_M1_RFMT_ADDR_WIDTH_LSB |
+                         QMI_M1_RFMT_SUFFIX_WIDTH_VALUE_Q << QMI_M1_RFMT_SUFFIX_WIDTH_LSB |
+                         QMI_M1_RFMT_DUMMY_WIDTH_VALUE_Q << QMI_M1_RFMT_DUMMY_WIDTH_LSB |
+                         QMI_M1_RFMT_DUMMY_LEN_VALUE_24 << QMI_M1_RFMT_DUMMY_LEN_LSB |
+                         QMI_M1_RFMT_DATA_WIDTH_VALUE_Q << QMI_M1_RFMT_DATA_WIDTH_LSB |
+                         QMI_M1_RFMT_PREFIX_LEN_VALUE_8 << QMI_M1_RFMT_PREFIX_LEN_LSB |
+                         QMI_M1_RFMT_SUFFIX_LEN_VALUE_NONE << QMI_M1_RFMT_SUFFIX_LEN_LSB);
+
+    qmi_hw->m[1].rcmd = PSRAM_CMD_QUAD_READ << QMI_M1_RCMD_PREFIX_LSB | 0 << QMI_M1_RCMD_SUFFIX_LSB;
+
+    qmi_hw->m[1].wfmt = (QMI_M1_WFMT_PREFIX_WIDTH_VALUE_Q << QMI_M1_WFMT_PREFIX_WIDTH_LSB |
+                         QMI_M1_WFMT_ADDR_WIDTH_VALUE_Q << QMI_M1_WFMT_ADDR_WIDTH_LSB |
+                         QMI_M1_WFMT_SUFFIX_WIDTH_VALUE_Q << QMI_M1_WFMT_SUFFIX_WIDTH_LSB |
+                         QMI_M1_WFMT_DUMMY_WIDTH_VALUE_Q << QMI_M1_WFMT_DUMMY_WIDTH_LSB |
+                         QMI_M1_WFMT_DUMMY_LEN_VALUE_NONE << QMI_M1_WFMT_DUMMY_LEN_LSB |
+                         QMI_M1_WFMT_DATA_WIDTH_VALUE_Q << QMI_M1_WFMT_DATA_WIDTH_LSB |
+                         QMI_M1_WFMT_PREFIX_LEN_VALUE_8 << QMI_M1_WFMT_PREFIX_LEN_LSB |
+                         QMI_M1_WFMT_SUFFIX_LEN_VALUE_NONE << QMI_M1_WFMT_SUFFIX_LEN_LSB);
+
+    qmi_hw->m[1].wcmd = PSRAM_CMD_QUAD_WRITE << QMI_M1_WCMD_PREFIX_LSB | 0 << QMI_M1_WCMD_SUFFIX_LSB;
+
+    // Mark that we can write to PSRAM.
+    xip_ctrl_hw->ctrl |= XIP_CTRL_WRITABLE_M1_BITS;
+
+    restore_interrupts(intr_stash);
+
+    __psram_size = psram_size;
+
+    uint32_t used_psram_size = &__psram_heap_start__ - &__psram_start__;
+    __psram_heap_size = __psram_size - used_psram_size;
+}
+PICO_RUNTIME_INIT_FUNC_RUNTIME(runtime_init_setup_psram, PICO_RUNTIME_INIT_PSRAM);
+
+// update timing -- used if the system clock/timing was changed.
+void psram_reinit_timing() {
+    set_psram_timing();
+}
+
+static bool __psram_heap_init() {
+    if (_bInitalized) {
+        return true;
+    }
+
+    if (!__psram_heap_size) {
+        return false;
+    }
+    _mem_heap = NULL;
+    _mem_psram_pool = NULL;
+    _mem_heap = tlsf_create_with_pool((void *)&__psram_heap_start__, __psram_heap_size, 16 * 1024 * 1024);
+    if (!_mem_heap) {
+        return false;
+    }
+    _mem_psram_pool = tlsf_get_pool(_mem_heap);
+    if (!_mem_psram_pool) {
+        return false;
+    }
+    _bInitalized = true;
+    return true;
+}
+
+void *__psram_malloc(size_t size) {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return NULL;
+    }
+    return tlsf_malloc(_mem_heap, size);
+}
+
+void __psram_free(void *ptr) {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return;
+    }
+    tlsf_free(_mem_heap, ptr);
+}
+
+void *__psram_realloc(void *ptr, size_t size) {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return NULL;
+    }
+    return tlsf_realloc(_mem_heap, ptr, size);
+}
+
+void *__psram_calloc(size_t num, size_t size) {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return NULL;
+    }
+    void *ptr = tlsf_malloc(_mem_heap, num * size);
+    if (ptr) {
+        bzero(ptr, num * size);
+    }
+    return ptr;
+}
+
+static bool max_free_walker(void *ptr, size_t size, int used, void *user) {
+    size_t *max_size = (size_t *)user;
+    if (!used && *max_size < size) {
+        *max_size = size;
+    }
+    return true;
+}
+
+size_t __psram_largest_free_block() {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return 0;
+    }
+    size_t max_free = 0;
+    if (_mem_psram_pool) {
+        tlsf_walk_pool(_mem_psram_pool, max_free_walker, &max_free);
+    }
+    return max_free;
+}
+
+static bool memory_size_walker(void *ptr, size_t size, int used, void *user) {
+    *((size_t *)user) += size;
+    return true;
+}
+
+size_t __psram_total_space() {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return 0;
+    }
+    size_t total_size = 0;
+    if (_mem_psram_pool) {
+        tlsf_walk_pool(_mem_psram_pool, memory_size_walker, &total_size);
+    }
+    return total_size;
+}
+
+static bool memory_used_walker(void *ptr, size_t size, int used, void *user) {
+    if (used) {
+        *((size_t *)user) += size;
+    }
+    return true;
+}
+
+size_t __psram_total_used() {
+    if (!__psram_heap_init() || !_mem_heap) {
+        return 0;
+    }
+    size_t total_size = 0;
+    if (_mem_psram_pool) {
+        tlsf_walk_pool(_mem_psram_pool, memory_used_walker, &total_size);
+    }
+    return total_size;
+}
+
+#endif // RP2350_PSRAM_CS

cores/rp2040/psram.h

@@ -0,0 +1,41 @@
+/**
+    @file sfe_psram.c
+
+    @brief This file contains a function that is used to detect and initialize PSRAM on
+    SparkFun rp2350 boards.
+*/
+
+/*
+    The MIT License (MIT)
+
+    Copyright (c) 2024 SparkFun Electronics
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions: The
+    above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED
+    "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+    NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+    PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+#pragma once
+
+#include <Arduino.h>
+
+void psram_reinit_timing();
+void *__psram_malloc(size_t size);
+void __psram_free(void *ptr);
+void *__psram_realloc(void *ptr, size_t size);
+void *__psram_calloc(size_t num, size_t size);
+size_t __psram_largest_free_block();
+size_t __psram_total_space();
+size_t __psram_total_used();

cores/rp2040/sdkoverride/att_db.h

@@ -0,0 +1,443 @@
+/*
+    Copyright (C) 2014 BlueKitchen GmbH
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the names of
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+    4. Any redistribution, use, or modification is done solely for
+      personal benefit and not for any commercial purpose or for
+      monetary gain.
+
+    THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
+    GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+    OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+    AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+    Please inquire about commercial licensing options at
+    contact@bluekitchen-gmbh.com
+
+*/
+
+/**
+    @title ATT Database Engine
+
+*/
+
+#ifndef ATT_DB_H
+#define ATT_DB_H
+
+#if defined ENABLE_CLASSIC
+
+#include <stdint.h>
+#include <sdkoverride/bluetooth.h>
+#include "btstack_linked_list.h"
+#include "btstack_defines.h"
+#include "btstack_bool.h"
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+    // MARK: Attribute PDU Opcodes
+#define ATT_ERROR_RESPONSE              0x01u
+
+#define ATT_EXCHANGE_MTU_REQUEST        0x02u
+#define ATT_EXCHANGE_MTU_RESPONSE       0x03u
+
+#define ATT_FIND_INFORMATION_REQUEST    0x04u
+#define ATT_FIND_INFORMATION_REPLY      0x05u
+#define ATT_FIND_BY_TYPE_VALUE_REQUEST  0x06u
+#define ATT_FIND_BY_TYPE_VALUE_RESPONSE 0x07u
+
+#define ATT_READ_BY_TYPE_REQUEST        0x08u
+#define ATT_READ_BY_TYPE_RESPONSE       0x09u
+#define ATT_READ_REQUEST                0x0au
+#define ATT_READ_RESPONSE               0x0bu
+#define ATT_READ_BLOB_REQUEST           0x0cu
+#define ATT_READ_BLOB_RESPONSE          0x0du
+#define ATT_READ_MULTIPLE_REQUEST       0x0eu
+#define ATT_READ_MULTIPLE_RESPONSE      0x0fu
+#define ATT_READ_BY_GROUP_TYPE_REQUEST  0x10u
+#define ATT_READ_BY_GROUP_TYPE_RESPONSE 0x11u
+
+#define ATT_WRITE_REQUEST               0x12u
+#define ATT_WRITE_RESPONSE              0x13u
+
+#define ATT_PREPARE_WRITE_REQUEST       0x16u
+#define ATT_PREPARE_WRITE_RESPONSE      0x17u
+#define ATT_EXECUTE_WRITE_REQUEST       0x18u
+#define ATT_EXECUTE_WRITE_RESPONSE      0x19u
+
+#define ATT_HANDLE_VALUE_NOTIFICATION   0x1bu
+#define ATT_HANDLE_VALUE_INDICATION     0x1du
+#define ATT_HANDLE_VALUE_CONFIRMATION   0x1eu
+
+#define ATT_READ_MULTIPLE_VARIABLE_REQ  0x20u
+#define ATT_READ_MULTIPLE_VARIABLE_RSP  0x21u
+#define ATT_MULTIPLE_HANDLE_VALUE_NTF   0x23u
+
+#define ATT_WRITE_COMMAND                0x52u
+#define ATT_SIGNED_WRITE_COMMAND         0xD2u
+
+
+    // internal additions
+    // 128 bit UUID used
+#define ATT_PROPERTY_UUID128             0x200u
+    // Read/Write Permission bits
+#define ATT_PROPERTY_READ_PERMISSION_BIT_0  0x0400u
+#define ATT_PROPERTY_READ_PERMISSION_BIT_1  0x0800u
+#define ATT_PROPERTY_WRITE_PERMISSION_BIT_0 0x0001u
+#define ATT_PROPERTY_WRITE_PERMISSION_BIT_1 0x0010u
+#define ATT_PROPERTY_READ_PERMISSION_SC     0x0020u
+#define ATT_PROPERTY_WRITE_PERMISSION_SC    0x0080u
+
+
+    typedef struct att_connection {
+        hci_con_handle_t con_handle;
+        uint16_t mtu;       // initialized to ATT_DEFAULT_MTU (23), negotiated during MTU exchange
+        uint16_t max_mtu;   // local maximal L2CAP_MTU, set to l2cap_max_le_mtu()
+        bool     mtu_exchanged;
+        uint8_t  encryption_key_size;
+        uint8_t  authenticated;
+        uint8_t  authorized;
+        uint8_t  secure_connection;
+    } att_connection_t;
+
+    /* API_START */
+
+    // map ATT ERROR CODES on to att_read_callback length
+#define ATT_READ_ERROR_CODE_OFFSET       0xfe00u
+
+    // custom BTstack ATT Response Pending for att_read_callback
+#define ATT_READ_RESPONSE_PENDING                 0xffffu
+
+    // internally used to signal write response pending
+#define ATT_INTERNAL_WRITE_RESPONSE_PENDING       0xfffeu
+
+    /**
+        @brief ATT Client Read Callback for Dynamic Data
+        - if buffer == NULL, don't copy data, just return size of value
+        - if buffer != NULL, copy data and return number bytes copied
+        If ENABLE_ATT_DELAYED_READ_RESPONSE is defined, you may return ATT_READ_RESPONSE_PENDING if data isn't available yet
+        @param con_handle of hci le connection
+        @param attribute_handle to be read
+        @param offset defines start of attribute value
+        @param buffer
+        @param buffer_size
+        @return size of value if buffer is NULL, otherwise number of bytes copied
+    */
+    typedef uint16_t (*att_read_callback_t)(hci_con_handle_t con_handle, uint16_t attribute_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size);
+
+    /**
+        @brief ATT Client Write Callback for Dynamic Data
+        Each Prepared Write Request triggers a callback with transaction mode ATT_TRANSACTION_MODE_ACTIVE.
+        On Execute Write, the callback will be called with ATT_TRANSACTION_MODE_VALIDATE and allows to validate all queued writes and return an application error.
+        If none of the registered callbacks return an error for ATT_TRANSACTION_MODE_VALIDATE and the callback will be called with ATT_TRANSACTION_MODE_EXECUTE.
+        Otherwise, all callbacks will be called with ATT_TRANSACTION_MODE_CANCEL.
+
+        If the additional validation step is not needed, just return 0 for all callbacks with transaction mode ATT_TRANSACTION_MODE_VALIDATE.
+
+        @param con_handle of hci le connection
+        @param attribute_handle to be written
+        @param transaction - ATT_TRANSACTION_MODE_NONE for regular writes. For prepared writes: ATT_TRANSACTION_MODE_ACTIVE, ATT_TRANSACTION_MODE_VALIDATE, ATT_TRANSACTION_MODE_EXECUTE, ATT_TRANSACTION_MODE_CANCEL
+        @param offset into the value - used for queued writes and long attributes
+        @param buffer
+        @param buffer_size
+        @param signature used for signed write commands
+        @return 0 if write was ok, ATT_ERROR_PREPARE_QUEUE_FULL if no space in queue, ATT_ERROR_INVALID_OFFSET if offset is larger than max buffer
+    */
+    typedef int (*att_write_callback_t)(hci_con_handle_t con_handle, uint16_t attribute_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size);
+
+    // Read & Write Callbacks for handle range
+    typedef struct att_service_handler {
+        btstack_linked_item_t * item;
+        uint16_t start_handle;
+        uint16_t end_handle;
+        att_read_callback_t read_callback;
+        att_write_callback_t write_callback;
+        btstack_packet_handler_t packet_handler;
+    } att_service_handler_t;
+
+    // MARK: ATT Operations
+
+    /**
+        @brief setup ATT database
+        @param db
+    */
+    void att_set_db(uint8_t const * db);
+
+    /*
+        @brief set callback for read of dynamic attributes
+        @param callback
+    */
+    void att_set_read_callback(att_read_callback_t callback);
+
+    /**
+        @brief set callback for write of dynamic attributes
+        @param callback
+    */
+    void att_set_write_callback(att_write_callback_t callback);
+
+    /**
+        @brief debug helper, dump ATT database to stdout using log_info
+    */
+    void att_dump_attributes(void);
+
+    /**
+        @brief process ATT request against database and put response into response buffer
+        @param att_connection used for mtu and security properties
+        @param request_buffer, request_len: ATT request from client
+        @param response_buffer for result
+        @return len of data in response buffer. 0 = no response,
+                ATT_READ_RESPONSE_PENDING if it was returned at least once for dynamic data (requires ENABLE_ATT_DELAYED_READ_RESPONSE)
+    */
+    uint16_t att_handle_request(att_connection_t * att_connection,
+                                uint8_t * request_buffer,
+                                uint16_t request_len,
+                                uint8_t * response_buffer);
+
+    /**
+        @brief setup value notification in response buffer for a given handle and value
+        @param att_connection
+        @param attribute_handle
+        @param value
+        @param value_len
+        @param response_buffer for notification
+    */
+    uint16_t att_prepare_handle_value_notification(att_connection_t * att_connection,
+            uint16_t attribute_handle,
+            const uint8_t *value,
+            uint16_t value_len,
+            uint8_t * response_buffer);
+
+    /**
+        @brief setup value notification in response buffer for multiple handles and values
+        @param att_connection
+        @param attribute_handle
+        @param value
+        @param value_len
+        @param response_buffer for notification
+    */
+    uint16_t att_prepare_handle_value_multiple_notification(att_connection_t * att_connection,
+            uint8_t num_attributes,
+            const uint16_t * attribute_handles,
+            const uint8_t ** values_data,
+            const uint16_t * values_len,
+            uint8_t * response_buffer);
+
+    /**
+        @brief setup value indication in response buffer for a given handle and value
+        @param att_connection
+        @param attribute_handle
+        @param value
+        @param value_len
+        @param response_buffer for indication
+    */
+    uint16_t att_prepare_handle_value_indication(att_connection_t * att_connection,
+            uint16_t attribute_handle,
+            const uint8_t *value,
+            uint16_t value_len,
+            uint8_t * response_buffer);
+
+    /**
+        @brief transaction queue of prepared writes, e.g., after disconnect
+        @return att_connection
+    */
+    void att_clear_transaction_queue(att_connection_t * att_connection);
+
+    // att_read_callback helpers for a various data types
+
+    /**
+        @brief Handle read of blob like data for att_read_callback
+        @param blob of data
+        @param blob_size of blob
+        @param offset from att_read_callback
+        @param buffer from att_read_callback
+        @param buffer_size from att_read_callback
+        @return value size for buffer == 0 and num bytes copied otherwise
+    */
+    uint16_t att_read_callback_handle_blob(const uint8_t * blob, uint16_t blob_size, uint16_t offset, uint8_t * buffer, uint16_t buffer_size);
+
+    /**
+        @brief Handle read of little endian unsigned 32 bit value for att_read_callback
+        @param value
+        @param offset from att_read_callback
+        @param buffer from att_read_callback
+        @param buffer_size from att_read_callback
+        @return value size for buffer == 0 and num bytes copied otherwise
+    */
+    uint16_t att_read_callback_handle_little_endian_32(uint32_t value, uint16_t offset, uint8_t * buffer, uint16_t buffer_size);
+
+    /**
+        @brief Handle read of little endian unsigned 16 bit value for att_read_callback
+        @param value
+        @param offset from att_read_callback
+        @param buffer from att_read_callback
+        @param buffer_size from att_read_callback
+        @return value size for buffer == 0 and num bytes copied otherwise
+    */
+    uint16_t att_read_callback_handle_little_endian_16(uint16_t value, uint16_t offset, uint8_t * buffer, uint16_t buffer_size);
+
+    /**
+        @brief Handle read of single byte for att_read_callback
+        @param blob of data
+        @param blob_size of blob
+        @param offset from att_read_callback
+        @param buffer from att_read_callback
+        @param buffer_size from att_read_callback
+        @return value size for buffer == 0 and num bytes copied otherwise
+    */
+    uint16_t att_read_callback_handle_byte(uint8_t value, uint16_t offset, uint8_t * buffer, uint16_t buffer_size);
+
+
+    // experimental client API
+    /**
+        @brief Get UUID for handle
+        @param attribute_handle
+        @return 0 if not found
+    */
+    uint16_t att_uuid_for_handle(uint16_t attribute_handle);
+
+    /**
+        @brief Get const value for handle
+        @param attribute_handle
+        @param out_value_len  output variable that hold value len
+        @return value
+    */
+
+    const uint8_t * gatt_server_get_const_value_for_handle(uint16_t attribute_handle, uint16_t * out_value_len);
+
+    // experimental GATT Server API
+
+    /**
+        @brief Get handle range for primary service.
+        @param uuid16
+        @param start_handle
+        @param end_handle
+        @return false if not found
+    */
+    bool gatt_server_get_handle_range_for_service_with_uuid16(uint16_t uuid16, uint16_t * start_handle, uint16_t * end_handle);
+
+    /**
+        @brief Get handle range for included service.
+        @param start_handle
+        @param end_handle
+        @param uuid16
+        @param out_included_service_handle
+        @param out_included_service_start_handle
+        @param out_included_service_end_handle
+        @return false if not found
+    */
+    bool gatt_server_get_included_service_with_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t uuid16,
+            uint16_t * out_included_service_handle, uint16_t * out_included_service_start_handle, uint16_t * out_included_service_end_handle);
+
+    /**
+        @brief Get value handle for characteristic.
+        @param start_handle
+        @param end_handle
+        @param uuid16
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_value_handle_for_characteristic_with_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t uuid16);
+
+    /**
+        @brief Get descriptor handle for characteristic.
+        @param start_handle
+        @param end_handle
+        @param characteristic_uuid16
+        @param descriptor_uuid16
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_descriptor_handle_for_characteristic_with_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t characteristic_uuid16, uint16_t descriptor_uuid16);
+
+    /**
+        @brief Get client configuration handle for characteristic.
+        @param start_handle
+        @param end_handle
+        @param characteristic_uuid16
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t characteristic_uuid16);
+
+    /**
+        @brief Get server configuration handle for characteristic.
+        @param start_handle
+        @param end_handle
+        @param characteristic_uuid16
+        @param descriptor_uuid16
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_server_configuration_handle_for_characteristic_with_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t characteristic_uuid16);
+
+
+    /**
+        @brief Get handle range for primary service.
+        @param uuid128
+        @param start_handle
+        @param end_handle
+        @return false if not found
+    */
+    bool gatt_server_get_handle_range_for_service_with_uuid128(const uint8_t * uuid128, uint16_t * start_handle, uint16_t * end_handle);
+
+    /**
+        @brief Get value handle.
+        @param start_handle
+        @param end_handle
+        @param uuid128
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_value_handle_for_characteristic_with_uuid128(uint16_t start_handle, uint16_t end_handle, const uint8_t * uuid128);
+
+    /**
+        @brief Get client configuration handle.
+        @param start_handle
+        @param end_handle
+        @param uuid128
+        @return 0 if not found
+    */
+    uint16_t gatt_server_get_client_configuration_handle_for_characteristic_with_uuid128(uint16_t start_handle, uint16_t end_handle, const uint8_t * uuid128);
+
+    /* API_END */
+
+    // non-user functionality for att_server
+
+    /**
+        @brief Check if writes to handle should be persistent
+        @param handle
+        @return 1 if persistent
+    */
+    bool att_is_persistent_ccc(uint16_t handle);
+
+
+
+    // auto-pts testing, returns response size
+#ifdef ENABLE_BTP
+    uint16_t btp_att_get_attributes_by_uuid16(uint16_t start_handle, uint16_t end_handle, uint16_t uuid16, uint8_t * response_buffer, uint16_t response_buffer_size);
+    uint16_t btp_att_get_attributes_by_uuid128(uint16_t start_handle, uint16_t end_handle, const uint8_t * uuid128, uint8_t * response_buffer, uint16_t response_buffer_size);
+    uint16_t btp_att_get_attribute_value(att_connection_t * att_connection, uint16_t attribute_handle, uint8_t * response_buffer, uint16_t response_buffer_size);
+#endif
+
+#if defined __cplusplus
+}
+#endif
+
+#endif
+
+#endif // ATT_H

cores/rp2040/sdkoverride/bluetooth.h

@@ -0,0 +1,926 @@
+/*
+    Copyright (C) 2015 BlueKitchen GmbH
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the names of
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+    4. Any redistribution, use, or modification is done solely for
+      personal benefit and not for any commercial purpose or for
+      monetary gain.
+
+    THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
+    GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+    OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+    AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+    Please inquire about commercial licensing options at
+    contact@bluekitchen-gmbh.com
+
+*/
+
+/*
+    bluetooth.h
+
+    Numbers defined or derived from the official Bluetooth specification
+*/
+
+#ifndef BLUETOOTH_H
+#define BLUETOOTH_H
+
+#include <stdint.h>
+
+/**
+    @brief hci connection handle type
+*/
+typedef uint16_t hci_con_handle_t;
+
+/**
+    @brief Length of a bluetooth device address.
+*/
+#define BD_ADDR_LEN 6
+
+/**
+    @brief Bluetooth address
+*/
+typedef uint8_t bd_addr_t[BD_ADDR_LEN];
+
+/**
+    Address types
+*/
+typedef enum {
+    // Public Device Address
+    BD_ADDR_TYPE_LE_PUBLIC = 0,
+    // Random Device Address
+    BD_ADDR_TYPE_LE_RANDOM = 1,
+    // Public Identity Address (Corresponds to Resolved Private Address)
+    BD_ADDR_TYPE_LE_PUBLIC_IDENTITY = 2,
+    // Random (static) Identity Address (Corresponds to Resolved Private Address)
+    BD_ADDR_TYPE_LE_RANDOM_IDENTITY = 3,
+    // internal BTstack addr types for Classic connections
+    BD_ADDR_TYPE_SCO       = 0xfc,
+    BD_ADDR_TYPE_ACL       = 0xfd,
+    BD_ADDR_TYPE_UNKNOWN   = 0xfe,  // also used as 'invalid'
+} bd_addr_type_t;
+
+/**
+    Link types for BR/EDR Connections
+*/
+typedef enum {
+    HCI_LINK_TYPE_SCO  = 0,
+    HCI_LINK_TYPE_ACL  = 1,
+    HCI_LINK_TYPE_ESCO = 2,
+} hci_link_type_t;
+
+
+/**
+    @brief link key
+*/
+#define LINK_KEY_LEN 16
+#define LINK_KEY_STR_LEN (LINK_KEY_LEN*2)
+typedef uint8_t link_key_t[LINK_KEY_LEN];
+
+/**
+    @brief link key type
+*/
+typedef enum {
+    INVALID_LINK_KEY = 0xffff,
+    COMBINATION_KEY = 0,  // standard pairing
+    LOCAL_UNIT_KEY,     // ?
+    REMOTE_UNIT_KEY,    // ?
+    DEBUG_COMBINATION_KEY,  // SSP with debug
+    UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192, // SSP Simple Pairing
+    AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192,   // SSP Passkey, Number confirm, OOB
+    CHANGED_COMBINATION_KEY,               // Link key changed using Change Connection Lnk Key
+    UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256, // SSP Simpe Pairing
+    AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256,   // SSP Passkey, Number confirm, OOB
+} link_key_type_t;
+
+/**
+    LE Privacy 1.2
+*/
+typedef enum {
+    LE_PRIVACY_MODE_NETWORK = 0,
+    LE_PRIVACY_MODE_DEVICE = 1,
+} le_privacy_mode_t;
+
+/**
+    @brief Extended Inquiry Response
+*/
+#define EXTENDED_INQUIRY_RESPONSE_DATA_LEN 240
+
+/**
+    @brief Inquiry modes
+*/
+typedef enum {
+    INQUIRY_MODE_STANDARD = 0,
+    INQUIRY_MODE_RSSI,
+    INQUIRY_MODE_RSSI_AND_EIR,
+} inquiry_mode_t;
+
+/**
+    @brief Page Scan Types
+*/
+typedef enum {
+    PAGE_SCAN_MODE_STANDARD = 0,
+    PAGE_SCAN_MODE_INTERLACED,
+} page_scan_type_t;
+
+/**
+    @brief Inquiry Scan Types
+*/
+typedef enum {
+    INQUIRY_SCAN_MODE_STANDARD = 0,
+    INQUIRY_SCAN_MODE_INTERLACED,
+} inquiry_scan_type_t;
+
+/**
+    Link Supervision Timeout Default, 0x7d00 * 0.625ms = 20s
+*/
+#define HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT 0x7D00
+
+/**
+    Service Type used for QoS Setup and Flow Specification
+*/
+typedef enum {
+    HCI_SERVICE_TYPE_NO_TRAFFIC = 0,
+    HCI_SERVICE_TYPE_BEST_EFFORT,
+    HCI_SERVICE_TYPE_GUARANTEED,
+    HCI_SERVICE_TYPE_INVALID,
+} hci_service_type_t;
+
+/**
+    HCI Transport
+*/
+
+/**
+    packet types - used in BTstack and over the H4 UART interface
+*/
+#define HCI_COMMAND_DATA_PACKET 0x01
+#define HCI_ACL_DATA_PACKET     0x02
+#define HCI_SCO_DATA_PACKET     0x03
+#define HCI_EVENT_PACKET        0x04
+#define HCI_ISO_DATA_PACKET     0x05
+
+/**
+    Other assigned numbers, Assigned_Numbers_Host Controller Interface.pdf
+*/
+
+typedef enum {
+    HCI_AUDIO_CODING_FORMAT_U_LAW_LOG = 0x00,
+    HCI_AUDIO_CODING_FORMAT_A_LAW_LOG,
+    HCI_AUDIO_CODING_FORMAT_CVSD,
+    HCI_AUDIO_CODING_FORMAT_TRANSPARENT, // Indicates that the controller does not do any transcoding or resampling. This is also used for test mode.
+    HCI_AUDIO_CODING_FORMAT_LINEAR_PCM,
+    HCI_AUDIO_CODING_FORMAT_MSBC,
+    HCI_AUDIO_CODING_FORMAT_LC3,
+    HCI_AUDIO_CODING_FORMAT_G_729A,
+    HCI_AUDIO_CODING_FORMAT_RFU,
+    HCI_AUDIO_CODING_FORMAT_VENDOR_SPECIFIC = 0xFF
+} hci_audio_coding_format_t;
+
+/**
+    HCI Layer
+*/
+
+//
+// Error Codes rfom Bluetooth Core Specification
+//
+
+/* ENUM_START: BLUETOOTH_ERROR_CODE */
+#define ERROR_CODE_SUCCESS                                 0x00
+#define ERROR_CODE_UNKNOWN_HCI_COMMAND                     0x01
+#define ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER           0x02
+#define ERROR_CODE_HARDWARE_FAILURE                        0x03
+#define ERROR_CODE_PAGE_TIMEOUT                            0x04
+#define ERROR_CODE_AUTHENTICATION_FAILURE                  0x05
+#define ERROR_CODE_PIN_OR_KEY_MISSING                      0x06
+#define ERROR_CODE_MEMORY_CAPACITY_EXCEEDED                0x07
+#define ERROR_CODE_CONNECTION_TIMEOUT                      0x08
+#define ERROR_CODE_CONNECTION_LIMIT_EXCEEDED               0x09
+#define ERROR_CODE_SYNCHRONOUS_CONNECTION_LIMIT_TO_A_DEVICE_EXCEEDED  0x0A
+#define ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS           0x0B
+#define ERROR_CODE_COMMAND_DISALLOWED                      0x0C
+#define ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES 0x0D
+#define ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS  0x0E
+#define ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR 0x0F
+#define ERROR_CODE_CONNECTION_ACCEPT_TIMEOUT_EXCEEDED      0x10
+#define ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE  0x11
+#define ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS          0x12
+#define ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION       0x13
+#define ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES 0x14
+#define ERROR_CODE_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_POWER_OFF     0x15
+#define ERROR_CODE_CONNECTION_TERMINATED_BY_LOCAL_HOST     0x16
+#define ERROR_CODE_REPEATED_ATTEMPTS                       0x17
+#define ERROR_CODE_PAIRING_NOT_ALLOWED                     0x18
+#define ERROR_CODE_UNKNOWN_LMP_PDU                         0x19
+#define ERROR_CODE_UNSUPPORTED_REMOTE_FEATURE_UNSUPPORTED_LMP_FEATURE 0x1A
+#define ERROR_CODE_SCO_OFFSET_REJECTED                     0x1B
+#define ERROR_CODE_SCO_INTERVAL_REJECTED                   0x1C
+#define ERROR_CODE_SCO_AIR_MODE_REJECTED                   0x1D
+#define ERROR_CODE_INVALID_LMP_PARAMETERS_INVALID_LL_PARAMETERS 0x1E
+#define ERROR_CODE_UNSPECIFIED_ERROR                       0x1F
+#define ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE 0x20
+#define ERROR_CODE_ROLE_CHANGE_NOT_ALLOWED                 0x21
+#define ERROR_CODE_LMP_RESPONSE_TIMEOUT_LL_RESPONSE_TIMEOUT 0x22
+#define ERROR_CODE_LMP_ERROR_TRANSACTION_COLLISION         0x23
+#define ERROR_CODE_LMP_PDU_NOT_ALLOWED                     0x24
+#define ERROR_CODE_ENCRYPTION_MODE_NOT_ACCEPTABLE          0x25
+#define ERROR_CODE_LINK_KEY_CANNOT_BE_CHANGED              0x26
+#define ERROR_CODE_REQUESTED_QOS_NOT_SUPPORTED             0x27
+#define ERROR_CODE_INSTANT_PASSED                          0x28
+#define ERROR_CODE_PAIRING_WITH_UNIT_KEY_NOT_SUPPORTED     0x29
+#define ERROR_CODE_DIFFERENT_TRANSACTION_COLLISION         0x2A
+#define ERROR_CODE_RESERVED                                0x2B
+#define ERROR_CODE_QOS_UNACCEPTABLE_PARAMETER              0x2C
+#define ERROR_CODE_QOS_REJECTED                            0x2D
+#define ERROR_CODE_CHANNEL_CLASSIFICATION_NOT_SUPPORTED    0x2E
+#define ERROR_CODE_INSUFFICIENT_SECURITY                   0x2F
+#define ERROR_CODE_PARAMETER_OUT_OF_MANDATORY_RANGE        0x30
+// #define ERROR_CODE_RESERVED
+#define ERROR_CODE_ROLE_SWITCH_PENDING                     0x32
+// #define ERROR_CODE_RESERVED
+#define ERROR_CODE_RESERVED_SLOT_VIOLATION                 0x34
+#define ERROR_CODE_ROLE_SWITCH_FAILED                      0x35
+#define ERROR_CODE_EXTENDED_INQUIRY_RESPONSE_TOO_LARGE     0x36
+#define ERROR_CODE_SECURE_SIMPLE_PAIRING_NOT_SUPPORTED_BY_HOST 0x37
+#define ERROR_CODE_HOST_BUSY_PAIRING                       0x38
+#define ERROR_CODE_CONNECTION_REJECTED_DUE_TO_NO_SUITABLE_CHANNEL_FOUND 0x39
+#define ERROR_CODE_CONTROLLER_BUSY                         0x3A
+#define ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS      0x3B
+#define ERROR_CODE_DIRECTED_ADVERTISING_TIMEOUT            0x3C
+#define ERROR_CODE_CONNECTION_TERMINATED_DUE_TO_MIC_FAILURE 0x3D
+#define ERROR_CODE_CONNECTION_FAILED_TO_BE_ESTABLISHED     0x3E
+#define ERROR_CODE_MAC_CONNECTION_FAILED                   0x3F
+#define ERROR_CODE_COARSE_CLOCK_ADJUSTMENT_REJECTED_BUT_WILL_TRY_TO_ADJUST_USING_CLOCK_DRAGGING 0x40
+
+// BTstack defined ERRORS, mapped into BLuetooth status code range
+
+#define BTSTACK_CONNECTION_TO_BTDAEMON_FAILED              0x50
+#define BTSTACK_ACTIVATION_FAILED_SYSTEM_BLUETOOTH         0x51
+#define BTSTACK_ACTIVATION_POWERON_FAILED                  0x52
+#define BTSTACK_ACTIVATION_FAILED_UNKNOWN                  0x53
+#define BTSTACK_NOT_ACTIVATED                              0x54
+#define BTSTACK_BUSY                                       0x55
+#define BTSTACK_MEMORY_ALLOC_FAILED                        0x56
+#define BTSTACK_ACL_BUFFERS_FULL                           0x57
+
+// l2cap errors - enumeration by the command that created them
+#define L2CAP_COMMAND_REJECT_REASON_COMMAND_NOT_UNDERSTOOD 0x60
+#define L2CAP_COMMAND_REJECT_REASON_SIGNALING_MTU_EXCEEDED 0x61
+#define L2CAP_COMMAND_REJECT_REASON_INVALID_CID_IN_REQUEST 0x62
+
+#define L2CAP_CONNECTION_RESPONSE_RESULT_SUCCESSFUL        0x63
+#define L2CAP_CONNECTION_RESPONSE_RESULT_PENDING           0x64
+#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_PSM       0x65
+#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_SECURITY  0x66
+#define L2CAP_CONNECTION_RESPONSE_RESULT_REFUSED_RESOURCES 0x67
+#define L2CAP_CONNECTION_RESPONSE_RESULT_ERTM_NOT_SUPPORTED 0x68
+
+// should be L2CAP_CONNECTION_RTX_TIMEOUT
+#define L2CAP_CONNECTION_RESPONSE_RESULT_RTX_TIMEOUT       0x69
+#define L2CAP_CONNECTION_BASEBAND_DISCONNECT               0x6A
+#define L2CAP_SERVICE_ALREADY_REGISTERED                   0x6B
+#define L2CAP_DATA_LEN_EXCEEDS_REMOTE_MTU                  0x6C
+#define L2CAP_SERVICE_DOES_NOT_EXIST                       0x6D
+#define L2CAP_LOCAL_CID_DOES_NOT_EXIST                     0x6E
+#define L2CAP_CONNECTION_RESPONSE_UNKNOWN_ERROR            0x6F
+
+#define RFCOMM_MULTIPLEXER_STOPPED                         0x70
+#define RFCOMM_CHANNEL_ALREADY_REGISTERED                  0x71
+#define RFCOMM_NO_OUTGOING_CREDITS                         0x72
+#define RFCOMM_AGGREGATE_FLOW_OFF                          0x73
+#define RFCOMM_DATA_LEN_EXCEEDS_MTU                        0x74
+
+#define HFP_REMOTE_REJECTS_AUDIO_CONNECTION                0x7F
+
+#define SDP_HANDLE_ALREADY_REGISTERED                      0x80
+#define SDP_QUERY_INCOMPLETE                               0x81
+#define SDP_SERVICE_NOT_FOUND                              0x82
+#define SDP_HANDLE_INVALID                                 0x83
+#define SDP_QUERY_BUSY                                     0x84
+
+#define ATT_HANDLE_VALUE_INDICATION_IN_PROGRESS            0x90
+#define ATT_HANDLE_VALUE_INDICATION_TIMEOUT                0x91
+#define ATT_HANDLE_VALUE_INDICATION_DISCONNECT             0x92
+
+#define GATT_CLIENT_NOT_CONNECTED                          0x93
+#define GATT_CLIENT_BUSY                                   0x94
+#define GATT_CLIENT_IN_WRONG_STATE                         0x95
+#define GATT_CLIENT_DIFFERENT_CONTEXT_FOR_ADDRESS_ALREADY_EXISTS 0x96
+#define GATT_CLIENT_VALUE_TOO_LONG                         0x97
+#define GATT_CLIENT_CHARACTERISTIC_NOTIFICATION_NOT_SUPPORTED 0x98
+#define GATT_CLIENT_CHARACTERISTIC_INDICATION_NOT_SUPPORTED   0x99
+
+#define BNEP_SERVICE_ALREADY_REGISTERED                    0xA0
+#define BNEP_CHANNEL_NOT_CONNECTED                         0xA1
+#define BNEP_DATA_LEN_EXCEEDS_MTU                          0xA2
+
+// OBEX ERRORS
+#define OBEX_UNKNOWN_ERROR                                 0xB0
+#define OBEX_CONNECT_FAILED                                0xB1
+#define OBEX_DISCONNECTED                                  0xB2
+#define OBEX_NOT_FOUND                                     0xB3
+#define OBEX_NOT_ACCEPTABLE                                0xB4
+#define OBEX_ABORTED                                       0xB5
+
+#define MESH_ERROR_APPKEY_INDEX_INVALID                    0xD0
+/* ENUM_END */
+
+
+/* ENUM_START: AVRCP_BROWSING_ERROR_CODE */
+#define AVRCP_BROWSING_ERROR_CODE_INVALID_COMMAND                     0x00  // Sent if TG received a PDU that it did not understand. Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_INVALID_PARAMETER                   0x01  // Sent if the TG received a PDU with a parameter ID that it did not understand. Sent if there is only one parameter ID in the PDU. Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_SPECIFIED_PARAMETER_NOT_FOUND       0x02  // Sent if the parameter ID is understood, but content is wrong or corrupted. Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_INTERNAL_ERROR                      0x03  // Sent if there are error conditions not covered by a more specific error code. Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_SUCCESS                             0x04  // This is the status that should be returned if the operation was successful. Valid for All except where the response CType is AV/C REJECTED.
+#define AVRCP_BROWSING_ERROR_CODE_UID_CHANGED                         0x05  // The UIDs on the device have changed. Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_RESERVED_06                         0x06  // Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_INVALID_DIRECTION                   0x07  // The Direction parameter is invalid. Valid for Change Path.
+#define AVRCP_BROWSING_ERROR_CODE_NOT_A_DIRECTORY                     0x08  // The UID provided does not refer to a folder item. Valid for Change Path.
+#define AVRCP_BROWSING_ERROR_CODE_DOES_NOT_EXIST                      0x09  // The UID provided does not refer to any currently valid. Valid for Change Path, PlayItem, AddToNowPlaying, GetItemAttributes.
+#define AVRCP_BROWSING_ERROR_CODE_INVALID_SCOPE                       0x0a  // The scope parameter is invalid. Valid for GetFolderItems, PlayItem, AddToNowPlayer, GetItemAttributes,.
+#define AVRCP_BROWSING_ERROR_CODE_RANGE_OUT_OF_BOUNDS                 0x0b  // The start of range provided is not valid. Valid for GetFolderItems.
+#define AVRCP_BROWSING_ERROR_CODE_UID_IS_A_DIRECTORY                  0x0c  // The UID provided refers to a directory, which cannot be handled by this media player. Valid for PlayItem, AddToNowPlaying.
+#define AVRCP_BROWSING_ERROR_CODE_MEDIA_IN_USES                       0x0d  // The media is not able to be used for this operation at this time. Valid for PlayItem, AddToNowPlaying.
+#define AVRCP_BROWSING_ERROR_CODE_NOW_PLAYING_LIST_FULL               0x0e  // No more items can be added to the Now Playing List. Valid for AddToNowPlaying.
+#define AVRCP_BROWSING_ERROR_CODE_SEARCH_NOT_SUPPORTED                0x0f  // The Browsed Media Player does not support search. Valid for Search.
+#define AVRCP_BROWSING_ERROR_CODE_SEARCH_IN_PROGRESS                  0x10  // A search operation is already in progress. Valid for Search.
+#define AVRCP_BROWSING_ERROR_CODE_INVALID_PLAYER_ID                   0x11  // The specified Player Id does not refer to a valid player. Valid for SetAddressedPlayer, SetBrowsedPlayer.
+#define AVRCP_BROWSING_ERROR_CODE_PLAYER_NOT_BROWSABLE                0x12  // The Player Id supplied refers to a Media Player which does not support browsing. Valid for SetBrowsedPlayer.
+#define AVRCP_BROWSING_ERROR_CODE_PLAYER_NOT_ADDRESSED                0x13  // The Player Id supplied refers to a player which is not currently addressed, and the command is not able to be performed if the player is not set as addressed. Valid for Search SetBrowsedPlayer.
+#define AVRCP_BROWSING_ERROR_CODE_NO_VALID_SEARCH_RESULTS             0x14  // The Search result list does not contain valid entries, e.g. after being invalidated due to change of browsed player. Valid for GetFolderItems.
+#define AVRCP_BROWSING_ERROR_CODE_NO_AVAILABLE_PLAYERS                0x15  // Valid for All.
+#define AVRCP_BROWSING_ERROR_CODE_ADDRESSED_PLAYER_CHANGED            0x16  // Valid for Register Notification.
+// 0x17-0xff Reserved
+/* ENUM_END */
+
+// HCI roles
+typedef enum {
+    HCI_ROLE_MASTER = 0,
+    HCI_ROLE_SLAVE  = 1,
+    HCI_ROLE_INVALID = 0xff,
+} hci_role_t;
+
+// packet sizes (max payload)
+#define HCI_ACL_DM1_SIZE            17
+#define HCI_ACL_DH1_SIZE            27
+#define HCI_ACL_2DH1_SIZE           54
+#define HCI_ACL_3DH1_SIZE           83
+#define HCI_ACL_DM3_SIZE           121
+#define HCI_ACL_DH3_SIZE           183
+#define HCI_ACL_DM5_SIZE           224
+#define HCI_ACL_DH5_SIZE           339
+#define HCI_ACL_2DH3_SIZE          367
+#define HCI_ACL_3DH3_SIZE          552
+#define HCI_ACL_2DH5_SIZE          679
+#define HCI_ACL_3DH5_SIZE         1021
+#define HCI_SCO_HV1_SIZE            10
+#define HCI_SCO_HV2_SIZE            20
+#define HCI_SCO_HV3_SIZE            30
+#define HCI_SCO_EV3_SIZE            30
+#define HCI_SCO_EV4_SIZE           120
+#define HCI_SCO_EV5_SIZE           180
+#define HCI_SCO_2EV3_SIZE           60
+#define HCI_SCO_2EV5_SIZE          360
+#define HCI_SCO_3EV3_SIZE           90
+#define HCI_SCO_3EV5_SIZE          540
+
+#define LE_ADVERTISING_DATA_SIZE    31
+#define LE_EXTENDED_ADVERTISING_DATA_SIZE    229
+#define LE_EXTENDED_ADVERTISING_MAX_HANDLE 0xEFu
+#define LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN 251
+
+// advertising event properties for extended advertising
+#define LE_ADVERTISING_PROPERTIES_CONNECTABLE      (1u<<0)
+#define LE_ADVERTISING_PROPERTIES_SCANNABLE        (1u<<1)
+#define LE_ADVERTISING_PROPERTIES_DIRECTED         (1u<<2)
+#define LE_ADVERTISING_PROPERTIES_HIGH_DUTY_CYCLE  (1u<<3)
+#define LE_ADVERTISING_PROPERTIES_LEGACY           (1u<<4)
+#define LE_ADVERTISING_PROPERTIES_ANONYMOUS        (1u<<5)
+#define LE_ADVERTISING_PROPERTIES_INCLUDE_TX_POWER (1u<<6)
+
+
+// SCO Packet Types
+#define SCO_PACKET_TYPES_NONE  0x0000
+#define SCO_PACKET_TYPES_HV1   0x0001
+#define SCO_PACKET_TYPES_HV2   0x0002
+#define SCO_PACKET_TYPES_HV3   0x0004
+#define SCO_PACKET_TYPES_EV3   0x0008
+#define SCO_PACKET_TYPES_EV4   0x0010
+#define SCO_PACKET_TYPES_EV5   0x0020
+#define SCO_PACKET_TYPES_2EV3  0x0040
+#define SCO_PACKET_TYPES_3EV3  0x0080
+#define SCO_PACKET_TYPES_2EV5  0x0100
+#define SCO_PACKET_TYPES_3EV5  0x0200
+#define SCO_PACKET_TYPES_ALL   0x03FF
+#define SCO_PACKET_TYPES_SCO   0x0007
+#define SCO_PACKET_TYPES_ESCO  0x03F8
+
+// Link Policy Settings
+#define LM_LINK_POLICY_DISABLE_ALL_LM_MODES  0
+#define LM_LINK_POLICY_ENABLE_ROLE_SWITCH    1
+#define LM_LINK_POLICY_ENABLE_HOLD_MODE      2
+#define LM_LINK_POLICY_ENABLE_SNIFF_MODE     4
+
+// ACL Connection Modes
+#define ACL_CONNECTION_MODE_ACTIVE 0
+#define ACL_CONNECTION_MODE_HOLD   1
+#define ACL_CONNECTION_MODE_SNIFF  2
+
+/**
+    Default INQ Mode
+*/
+#define GAP_IAC_GENERAL_INQUIRY 0x9E8B33L // General/Unlimited Inquiry Access Code (GIAC)
+#define GAP_IAC_LIMITED_INQUIRY 0x9E8B00L // Limited Dedicated Inquiry Access Code (LIAC)
+
+/**
+    SSP IO Capabilities
+*/
+#define SSP_IO_CAPABILITY_DISPLAY_ONLY   0
+#define SSP_IO_CAPABILITY_DISPLAY_YES_NO 1
+#define SSP_IO_CAPABILITY_KEYBOARD_ONLY  2
+#define SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT 3
+#define SSP_IO_CAPABILITY_UNKNOWN 0xff
+
+
+/**
+    SSP Authentication Requirements, see IO Capability Request Reply Command
+*/
+
+// Numeric comparison with automatic accept allowed.
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_NO_BONDING 0x00
+
+// Use IO Capabilities to deter- mine authentication procedure
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_NO_BONDING 0x01
+
+// Numeric compar- ison with automatic accept allowed.
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING 0x02
+
+// Use IO Capabilities to determine authentication procedure
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_DEDICATED_BONDING 0x03
+
+// Numeric Compari- son with automatic accept allowed.
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING 0x04
+
+// Use IO capabilities to determine authentication procedure.
+#define SSP_IO_AUTHREQ_MITM_PROTECTION_REQUIRED_GENERAL_BONDING 0x05
+
+
+// OGFs
+#define OGF_LINK_CONTROL          0x01
+#define OGF_LINK_POLICY           0x02
+#define OGF_CONTROLLER_BASEBAND   0x03
+#define OGF_INFORMATIONAL_PARAMETERS 0x04
+#define OGF_STATUS_PARAMETERS     0x05
+#define OGF_TESTING               0x06
+#define OGF_LE_CONTROLLER 0x08
+#define OGF_VENDOR  0x3f
+
+
+
+
+/**
+    L2CAP Layer
+*/
+
+#define L2CAP_HEADER_SIZE 4
+
+// minimum signaling MTU
+#define L2CAP_MINIMAL_MTU 48
+#define L2CAP_DEFAULT_MTU 672
+
+// Minimum/default MTU
+#define L2CAP_LE_DEFAULT_MTU  23
+
+// L2CAP Fixed Channel IDs
+#define L2CAP_CID_SIGNALING                        0x0001
+#define L2CAP_CID_CONNECTIONLESS_CHANNEL           0x0002
+#define L2CAP_CID_ATTRIBUTE_PROTOCOL               0x0004
+#define L2CAP_CID_SIGNALING_LE                     0x0005
+#define L2CAP_CID_SECURITY_MANAGER_PROTOCOL        0x0006
+#define L2CAP_CID_BR_EDR_SECURITY_MANAGER          0x0007
+
+// L2CAP Channels in Basic and Enhanced Retransmission Mode
+
+// connection response result
+#define L2CAP_CONNECTION_RESULT_SUCCESS                         0x0000
+#define L2CAP_CONNECTION_RESULT_PENDING                         0x0001
+#define L2CAP_CONNECTION_RESULT_PSM_NOT_SUPPORTED               0x0002
+#define L2CAP_CONNECTION_RESULT_SECURITY_BLOCK                  0x0003
+#define L2CAP_CONNECTION_RESULT_NO_RESOURCES_AVAILABLE          0x0004
+#define L2CAP_CONNECTION_RESULT_INVALID_SOURCE_CID              0x0006
+#define L2CAP_CONNECTION_RESULT_SOURCE_CID_ALREADY_ALLOCATED    0x0007
+
+// L2CAP Channels in LE Credit-Based Flow-Control Mode
+
+// connection response result
+#define L2CAP_CBM_CONNECTION_RESULT_SUCCESS                         0x0000
+#define L2CAP_CBM_CONNECTION_RESULT_SPSM_NOT_SUPPORTED              0x0002
+#define L2CAP_CBM_CONNECTION_RESULT_NO_RESOURCES_AVAILABLE          0x0004
+#define L2CAP_CBM_CONNECTION_RESULT_INSUFFICIENT_AUTHENTICATION     0x0005
+#define L2CAP_CBM_CONNECTION_RESULT_INSUFFICIENT_AUTHORIZATION      0x0006
+#define L2CAP_CBM_CONNECTION_RESULT_ENCYRPTION_KEY_SIZE_TOO_SHORT   0x0007
+#define L2CAP_CBM_CONNECTION_RESULT_INSUFFICIENT_ENCRYPTION         0x0008
+#define L2CAP_CBM_CONNECTION_RESULT_INVALID_SOURCE_CID              0x0009
+#define L2CAP_CBM_CONNECTION_RESULT_SOURCE_CID_ALREADY_ALLOCATED    0x000A
+#define L2CAP_CBM_CONNECTION_RESULT_UNACCEPTABLE_PARAMETERS         0x000B
+
+
+// L2CAP Channels in Enhanced Credit-Based Flow-Control Mode
+
+// number of CIDs in single connection+reconfiguration request/response
+#define L2CAP_ECBM_MAX_CID_ARRAY_SIZE        5
+
+// connection response result
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_SUCCESS                                    0x0000
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_SPSM_NOT_SUPPORTED                 0x0002
+#define L2CAP_ECBM_CONNECTION_RESULT_SOME_REFUSED_INSUFFICIENT_RESOURCES_AVAILABLE  0x0004
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_INSUFFICIENT_AUTHENTICATION        0x0005
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_INSUFFICIENT_AUTHORIZATION         0x0006
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_ENCYRPTION_KEY_SIZE_TOO_SHORT      0x0007
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_INSUFFICIENT_ENCRYPTION            0x0008
+#define L2CAP_ECBM_CONNECTION_RESULT_SOME_REFUSED_INVALID_SOURCE_CID                0x0009
+#define L2CAP_ECBM_CONNECTION_RESULT_SOME_REFUSED_SOURCE_CID_ALREADY_ALOCATED       0x000A
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_UNACCEPTABLE_PARAMETERS            0x000B
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_REFUSED_INVALID_PARAMETERS                 0x000C
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_PENDING_NO_FURTHER_INFORMATION             0x000D
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_PENDING_AUTHENTICATION                     0x000E
+#define L2CAP_ECBM_CONNECTION_RESULT_ALL_PENDING_AUTHORIZATION                      0x000F
+
+
+// Result for Reconfigure Request
+#define L2CAP_ECBM_RECONFIGURE_SUCCESS                                 0
+#define L2CAP_ECBM_RECONFIGURE_FAILED_MTU_REDUCTION_NOT_ALLOWED        1
+#define L2CAP_ECBM_RECONFIGURE_FAILED_MPS_REDUCTION_MULTIPLE_CHANNELS  2
+#define L2CAP_ECBM_RECONFIGURE_FAILED_DESTINATION_CID_INVALID          3
+#define L2CAP_ECBM_RECONFIGURE_FAILED_UNACCEPTABLE_PARAMETERS          4
+
+/**
+    SDP Protocol
+*/
+
+// Device Vendor ID Sources
+#define DEVICE_ID_VENDOR_ID_SOURCE_BLUETOOTH 0x0001
+#define DEVICE_ID_VENDOR_ID_SOURCE_USB       0x0002
+
+// OBEX
+#define SDP_vCard_2_1       0x01
+#define SDP_vCard_3_0       0x02
+#define SDP_vCal_1_0        0x03
+#define SDP_iCal_2_0        0x04
+#define SDP_vNote           0x05
+#define SDP_vMessage        0x06
+#define SDP_OBEXFileTypeAny 0xFF
+
+/**
+    RFCOMM Protocol
+*/
+
+// Line Status
+#define LINE_STATUS_NO_ERROR       0x00
+#define LINE_STATUS_OVERRUN_ERROR  0x03
+#define LINE_STATUS_PARITY_ERORR   0x05
+#define LINE_STATUS_FRAMING_ERROR  0x09
+
+// Modem Status Flags
+#define MODEM_STATUS_FC   0x02
+#define MODEM_STATUS_RTC  0x04
+#define MODEM_STATUS_RTR  0x08
+#define MODEM_STATUS_IC   0x40
+#define MODEM_STATUS_DV   0x80
+
+typedef enum rpn_baud {
+    RPN_BAUD_2400 = 0,
+    RPN_BAUD_4800,
+    RPN_BAUD_7200,
+    RPN_BAUD_9600,
+    RPN_BAUD_19200,
+    RPN_BAUD_38400,
+    RPN_BAUD_57600,
+    RPN_BAUD_115200,
+    RPN_BAUD_230400
+} rpn_baud_t;
+
+typedef enum rpn_data_bits {
+    RPN_DATA_BITS_5 = 0,
+    RPN_DATA_BITS_6 = 0,
+    RPN_DATA_BITS_7 = 0,
+    RPN_DATA_BITS_8 = 0
+} rpn_data_bits_t;
+
+typedef enum rpn_stop_bits {
+    RPN_STOP_BITS_1_0 = 0,
+    RPN_STOP_BITS_1_5
+} rpn_stop_bits_t;
+
+typedef enum rpn_parity {
+    RPN_PARITY_NONE  = 0,
+    RPN_PARITY_ODD   = 1,
+    RPN_PARITY_EVEN  = 3,
+    RPN_PARITY_MARK  = 5,
+    RPN_PARITY_SPACE = 7,
+} rpn_parity_t;
+
+#define RPN_FLOW_CONTROL_XONXOFF_ON_INPUT  0x01
+#define RPN_FLOW_CONTROL_XONXOFF_ON_OUTPUT 0x02
+#define RPN_FLOW_CONTROL_RTR_ON_INPUT      0x04
+#define RPN_FLOW_CONTROL_RTR_ON_OUTPUT     0x08
+#define RPN_FLOW_CONTROL_RTC_ON_INPUT      0x10
+#define RPN_FLOW_CONTROL_RTC_ON_OUTPUT     0x20
+
+#define RPN_PARAM_MASK_0_BAUD             0x01
+#define RPN_PARAM_MASK_0_DATA_BITS        0x02
+#define RPN_PARAM_MASK_0_STOP_BITS        0x04
+#define RPN_PARAM_MASK_0_PARITY           0x08
+#define RPN_PARAM_MASK_0_PARITY_TYPE      0x10
+#define RPN_PARAM_MASK_0_XON_CHAR         0x20
+#define RPN_PARAM_MASK_0_XOFF_CHAR        0x40
+#define RPN_PARAM_MASK_0_RESERVED         0x80
+
+// @note: values are identical to rpn_flow_control_t
+#define RPN_PARAM_MASK_1_XONOFF_ON_INPUT  0x01
+#define RPN_PARAM_MASK_1_XONOFF_ON_OUTPUT 0x02
+#define RPN_PARAM_MASK_1_RTR_ON_INPUT     0x04
+#define RPN_PARAM_MASK_1_RTR_ON_OUTPUT    0x08
+#define RPN_PARAM_MASK_1_RTC_ON_INPUT     0x10
+#define RPN_PARAM_MASK_1_RTC_ON_OUTPUT    0x20
+#define RPN_PARAM_MASK_1_RESERVED_0       0x40
+#define RPN_PARAM_MASK_1_RESERVED_1       0x80
+
+/**
+    BNEP Protocol
+*/
+
+#ifndef ETHER_ADDR_LEN
+#define ETHER_ADDR_LEN 6
+#endif
+
+#ifndef ETHERTYPE_VLAN
+#define ETHERTYPE_VLAN                                  0x8100 /* IEEE 802.1Q VLAN tag */
+#endif
+
+#define BNEP_MTU_MIN                                    1691
+
+
+/**
+    PAN Profile
+*/
+
+typedef enum {
+    BNEP_SECURITY_NONE = 0x0000,
+    BNEP_SECURITY_SERVICE_LEVEL_ENFORCED,
+    BNEP_SECURITY_802_1X
+} security_description_t;
+
+typedef enum {
+    PAN_NET_ACCESS_TYPE_PSTN = 0x0000,
+    PAN_NET_ACCESS_TYPE_ISDN,
+    PAN_NET_ACCESS_TYPE_DSL,
+    PAN_NET_ACCESS_TYPE_CABLE_MODEM,
+    PAN_NET_ACCESS_TYPE_10MB_ETHERNET,
+    PAN_NET_ACCESS_TYPE_100MB_ETHERNET,
+    PAN_NET_ACCESS_TYPE_4MB_TOKEN_RING,
+    PAN_NET_ACCESS_TYPE_16MB_TOKEN_RING,
+    PAN_NET_ACCESS_TYPE_100MB_TOKEN_RING,
+    PAN_NET_ACCESS_TYPE_FDDI,
+    PAN_NET_ACCESS_TYPE_GSM,
+    PAN_NET_ACCESS_TYPE_CDMA,
+    PAN_NET_ACCESS_TYPE_GPRS,
+    PAN_NET_ACCESS_TYPE_3G,
+    PAN_NET_ACCESS_TYPE_CELULAR,
+    PAN_NET_ACCESS_TYPE_OTHER = 0xFFFE,
+    PAN_NET_ACCESS_TYPE_NONE
+} net_access_type_t;
+
+/**
+    ATT
+*/
+
+// Minimum/default MTU
+#define ATT_DEFAULT_MTU               23
+
+// MARK: ATT Error Codes
+#define ATT_ERROR_SUCCESS                          0x00
+#define ATT_ERROR_INVALID_HANDLE                   0x01
+#define ATT_ERROR_READ_NOT_PERMITTED               0x02
+#define ATT_ERROR_WRITE_NOT_PERMITTED              0x03
+#define ATT_ERROR_INVALID_PDU                      0x04
+#define ATT_ERROR_INSUFFICIENT_AUTHENTICATION      0x05
+#define ATT_ERROR_REQUEST_NOT_SUPPORTED            0x06
+#define ATT_ERROR_INVALID_OFFSET                   0x07
+#define ATT_ERROR_INSUFFICIENT_AUTHORIZATION       0x08
+#define ATT_ERROR_PREPARE_QUEUE_FULL               0x09
+#define ATT_ERROR_ATTRIBUTE_NOT_FOUND              0x0a
+#define ATT_ERROR_ATTRIBUTE_NOT_LONG               0x0b
+#define ATT_ERROR_INSUFFICIENT_ENCRYPTION_KEY_SIZE 0x0c
+#define ATT_ERROR_INVALID_ATTRIBUTE_VALUE_LENGTH   0x0d
+#define ATT_ERROR_UNLIKELY_ERROR                   0x0e
+#define ATT_ERROR_INSUFFICIENT_ENCRYPTION          0x0f
+#define ATT_ERROR_UNSUPPORTED_GROUP_TYPE           0x10
+#define ATT_ERROR_INSUFFICIENT_RESOURCES           0x11
+#define ATT_ERROR_VALUE_NOT_ALLOWED                0x13
+
+// MARK: ATT Error Codes defined by BTstack
+#define ATT_ERROR_HCI_DISCONNECT_RECEIVED          0x1f
+#define ATT_ERROR_BONDING_INFORMATION_MISSING      0x70
+#define ATT_ERROR_DATA_MISMATCH                    0x7e
+#define ATT_ERROR_TIMEOUT                          0x7F
+#define ATT_ERROR_WRITE_RESPONSE_PENDING           0x100
+
+// MARK: ATT Error Codes from Bluetooth Core Specification Supplement, Version 9 or later
+#define ATT_ERROR_WRITE_REQUEST_REJECTED                                                      0xFC
+#define ATT_ERROR_CLIENT_CHARACTERISTIC_CONFIGURATION_DESCRIPTOR_IMPROPERLY_CONFIGURED        0xFD
+#define ATT_ERROR_PROCEDURE_ALREADY_IN_PROGRESS                                               0xFE
+#define ATT_ERROR_OUT_OF_RANGE                                                                0xFF
+
+// MARK: ATT Error Codes from Cycling Power Service spec
+#define CYCLING_POWER_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS                          0x80
+#define CYCLING_POWER_ERROR_CODE_PROCEDURE_ALREADY_IN_PROGRESS                                0xFE
+#define CYCLING_POWER_ERROR_CODE_CCC_DESCRIPTOR_IMPROPERLY_CONFIGURED                         0xFD
+
+// MARK: ATT Error Codes from Cycling Speed and Cadence Service spec
+#define CYCLING_SPEED_AND_CADENCE_ERROR_CODE_PROCEDURE_ALREADY_IN_PROGRESS                    0x80
+#define CYCLING_SPEED_AND_CADENCE_ERROR_CODE_CCC_DESCRIPTOR_IMPROPERLY_CONFIGURED             0x81
+
+
+// MARK: Attribute Property Flags
+#define ATT_PROPERTY_BROADCAST           0x01
+#define ATT_PROPERTY_READ                0x02
+#define ATT_PROPERTY_WRITE_WITHOUT_RESPONSE 0x04
+#define ATT_PROPERTY_WRITE               0x08
+#define ATT_PROPERTY_NOTIFY              0x10
+#define ATT_PROPERTY_INDICATE            0x20
+#define ATT_PROPERTY_AUTHENTICATED_SIGNED_WRITE 0x40
+#define ATT_PROPERTY_EXTENDED_PROPERTIES 0x80
+
+// MARK: Attribute Property Flag, BTstack extension
+// value is asked from client
+#define ATT_PROPERTY_DYNAMIC             0x100
+
+// Security levels
+#define ATT_SECURITY_NONE 0
+#define ATT_SECURITY_ENCRYPTED 1
+#define ATT_SECURITY_AUTHENTICATED 2
+#define ATT_SECURITY_AUTHORIZED 3
+#define ATT_SECURITY_AUTHENTICATED_SC 4
+
+// ATT Transaction Timeout of 30 seconds for Command/Response or Indication/Confirmation
+#define ATT_TRANSACTION_TIMEOUT_MS     30000
+
+#define ATT_TRANSACTION_MODE_NONE      0x0
+#define ATT_TRANSACTION_MODE_ACTIVE    0x1
+#define ATT_TRANSACTION_MODE_EXECUTE   0x2
+#define ATT_TRANSACTION_MODE_CANCEL    0x3
+#define ATT_TRANSACTION_MODE_VALIDATE  0x4
+
+// MARK: GATT UUIDs
+#define GATT_PRIMARY_SERVICE_UUID                   0x2800
+#define GATT_SECONDARY_SERVICE_UUID                 0x2801
+#define GATT_INCLUDE_SERVICE_UUID                   0x2802
+#define GATT_CHARACTERISTICS_UUID                   0x2803
+#define GATT_CHARACTERISTIC_EXTENDED_PROPERTIES     0x2900
+#define GATT_CHARACTERISTIC_USER_DESCRIPTION        0x2901
+#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION   0x2902
+#define GATT_SERVER_CHARACTERISTICS_CONFIGURATION   0x2903
+#define GATT_CHARACTERISTIC_PRESENTATION_FORMAT     0x2904
+#define GATT_CHARACTERISTIC_AGGREGATE_FORMAT        0x2905
+#define GATT_CLIENT_SUPPORTED_FEATURES              0x2B29
+#define GATT_SERVER_SUPPORTED_FEATURES              0x2B3A
+
+#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NONE          0
+#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION  1
+#define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_INDICATION    2
+
+#define GATT_CLIENT_ANY_CONNECTION      0xffff
+#define GATT_CLIENT_ANY_VALUE_HANDLE    0x0000
+
+// GAP Service and Characteristics
+#define GAP_SERVICE_UUID               0x1800
+#define GAP_DEVICE_NAME_UUID           0x2a00
+#define GAP_APPEARANCE_UUID            0x2a01
+#define GAP_PERIPHERAL_PRIVACY_FLAG    0x2a02
+#define GAP_RECONNECTION_ADDRESS_UUID  0x2a03
+#define GAP_PERIPHERAL_PREFERRED_CONNECTION_PARAMETERS_UUID 0x2a04
+#define GAP_SERVICE_CHANGED            0x2a05
+
+// Bluetooth GATT types
+
+typedef struct {
+    uint16_t year;      // 0 - year  is not known; or [1582,9999]
+    uint8_t  month;     // 0 - month is not known; or [1,12]
+    uint8_t  day;       // 0 - day   is not known; or [1,31]
+    uint8_t  hours;     // [0,23]
+    uint8_t  minutes;   // [0,59]
+    uint8_t  seconds;   // [0,59]
+} gatt_date_time_t;
+
+typedef enum {
+    GATT_MICROPHONE_CONTROL_MUTE_OFF = 0x00,
+    GATT_MICROPHONE_CONTROL_MUTE_ON,
+    GATT_MICROPHONE_CONTROL_MUTE_DISABLED
+} gatt_microphone_control_mute_t;
+
+/**
+    SM - LE Security Manager
+*/
+// Bluetooth Spec definitions
+typedef enum {
+    SM_CODE_PAIRING_REQUEST = 0X01,
+    SM_CODE_PAIRING_RESPONSE,
+    SM_CODE_PAIRING_CONFIRM,
+    SM_CODE_PAIRING_RANDOM,
+    SM_CODE_PAIRING_FAILED,
+    SM_CODE_ENCRYPTION_INFORMATION,
+    SM_CODE_MASTER_IDENTIFICATION,
+    SM_CODE_IDENTITY_INFORMATION,
+    SM_CODE_IDENTITY_ADDRESS_INFORMATION,
+    SM_CODE_SIGNING_INFORMATION,
+    SM_CODE_SECURITY_REQUEST,
+    SM_CODE_PAIRING_PUBLIC_KEY,
+    SM_CODE_PAIRING_DHKEY_CHECK,
+    SM_CODE_KEYPRESS_NOTIFICATION,
+} SECURITY_MANAGER_COMMANDS;
+
+// IO Capability Values
+typedef enum {
+    IO_CAPABILITY_DISPLAY_ONLY = 0,
+    IO_CAPABILITY_DISPLAY_YES_NO,
+    IO_CAPABILITY_KEYBOARD_ONLY,
+    IO_CAPABILITY_NO_INPUT_NO_OUTPUT,
+    IO_CAPABILITY_KEYBOARD_DISPLAY, // not used by secure simple pairing
+} io_capability_t;
+
+// Authentication requirement flags
+#define SM_AUTHREQ_NO_BONDING        0x00
+#define SM_AUTHREQ_BONDING           0x01
+#define SM_AUTHREQ_MITM_PROTECTION   0x04
+#define SM_AUTHREQ_SECURE_CONNECTION 0x08
+#define SM_AUTHREQ_KEYPRESS          0x10
+#define SM_AUTHREQ_CT2               0x20
+
+// Key distribution flags used by spec
+#define SM_KEYDIST_ENC_KEY  0x01
+#define SM_KEYDIST_ID_KEY   0x02
+#define SM_KEYDIST_SIGN     0x04
+#define SM_KEYDIST_LINK_KEY 0x08
+
+// Key distribution flags used internally
+#define SM_KEYDIST_FLAG_ENCRYPTION_INFORMATION       0x01
+#define SM_KEYDIST_FLAG_MASTER_IDENTIFICATION        0x02
+#define SM_KEYDIST_FLAG_IDENTITY_INFORMATION         0x04
+#define SM_KEYDIST_FLAG_IDENTITY_ADDRESS_INFORMATION 0x08
+#define SM_KEYDIST_FLAG_SIGNING_IDENTIFICATION       0x10
+
+// STK Generation Methods
+#define SM_STK_GENERATION_METHOD_JUST_WORKS          0x01
+#define SM_STK_GENERATION_METHOD_OOB                 0x02
+#define SM_STK_GENERATION_METHOD_PASSKEY             0x04
+#define SM_STK_GENERATION_METHOD_NUMERIC_COMPARISON  0x08
+
+// Pairing Failed Reasons
+#define SM_REASON_RESERVED                     0x00
+#define SM_REASON_PASSKEY_ENTRY_FAILED         0x01
+#define SM_REASON_OOB_NOT_AVAILABLE            0x02
+#define SM_REASON_AUTHENTHICATION_REQUIREMENTS 0x03
+#define SM_REASON_CONFIRM_VALUE_FAILED         0x04
+#define SM_REASON_PAIRING_NOT_SUPPORTED        0x05
+#define SM_REASON_ENCRYPTION_KEY_SIZE          0x06
+#define SM_REASON_COMMAND_NOT_SUPPORTED        0x07
+#define SM_REASON_UNSPECIFIED_REASON           0x08
+#define SM_REASON_REPEATED_ATTEMPTS            0x09
+#define SM_REASON_INVALID_PARAMETERS           0x0a
+#define SM_REASON_DHKEY_CHECK_FAILED           0x0b
+#define SM_REASON_NUMERIC_COMPARISON_FAILED    0x0c
+#define SM_REASON_BR_EDR_PAIRING_IN_PROGRESS   0x0d
+#define SM_REASON_CROSS_TRANSPORT_KEY_DERIVATION_NOT_ALLOWED 0x0e
+#define SM_REASON_KEY_REJECTED                 0x0f
+
+// also, invalid parameters
+// and reserved
+
+// Keypress Notifications
+#define SM_KEYPRESS_PASSKEY_ENTRY_STARTED      0x00
+#define SM_KEYPRESS_PASSKEY_DIGIT_ENTERED      0x01
+#define SM_KEYPRESS_PASSKEY_DIGIT_ERASED       0x02
+#define SM_KEYPRESS_PASSKEY_CLEARED            0x03
+#define SM_KEYPRESS_PASSKEY_ENTRY_COMPLETED    0x04
+
+
+#endif

cores/rp2040/sdkoverride/btstack_flash_bank.cpp

@@ -49,11 +49,15 @@ static uint32_t pico_flash_bank_get_alignment(void * context) {
 static void pico_flash_bank_erase(void * context, int bank) {
     (void)(context);
     DEBUG_PRINT("erase: bank %d\n", bank);
-    noInterrupts();
+    if (!__isFreeRTOS) {
+        noInterrupts();
+    }
     rp2040.idleOtherCore();
     flash_range_erase(PICO_FLASH_BANK_STORAGE_OFFSET + (PICO_FLASH_BANK_SIZE * bank), PICO_FLASH_BANK_SIZE);
     rp2040.resumeOtherCore();
-    interrupts();
+    if (!__isFreeRTOS) {
+        interrupts();
+    }
 }
 
 static void pico_flash_bank_read(void *context, int bank, uint32_t offset, uint8_t *buffer, uint32_t size) {
@@ -147,11 +151,15 @@ static void pico_flash_bank_write(void * context, int bank, uint32_t offset, con
         offset = 0;
 
         // Now program the entire page
-        noInterrupts();
+        if (!__isFreeRTOS) {
+            noInterrupts();
+        }
         rp2040.idleOtherCore();
         flash_range_program(bank_start_pos + (page * FLASH_PAGE_SIZE), page_data, FLASH_PAGE_SIZE);
         rp2040.resumeOtherCore();
-        interrupts();
+        if (!__isFreeRTOS) {
+            interrupts();
+        }
     }
 }
 

cores/rp2040/sdkoverride/hids_device.c

@@ -0,0 +1,524 @@
+/*
+    Copyright (C) 2014 BlueKitchen GmbH
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the names of
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+    4. Any redistribution, use, or modification is done solely for
+      personal benefit and not for any commercial purpose or for
+      monetary gain.
+
+    THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
+    GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+    OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+    AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+    Please inquire about commercial licensing options at
+    contact@bluekitchen-gmbh.com
+
+*/
+
+#if defined ENABLE_CLASSIC
+
+#define BTSTACK_FILE__ "hids_device.c"
+
+/**
+    Implementation of the GATT HIDS Device
+    To use with your application, add '#import <hids.gatt>' to your .gatt file
+*/
+
+#include "hids_device.h"
+
+#include "ble/att_db.h"
+#include "ble/att_server.h"
+#include "bluetooth_gatt.h"
+#include "btstack_util.h"
+#include "btstack_debug.h"
+
+#define HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS    0x80
+
+// storage for 'generic' HID Device with single Input, Output, and Feature Report
+static hids_device_report_t hid_reports_generic_storage[3];
+
+typedef struct {
+    uint16_t        con_handle;
+
+    uint8_t         hid_country_code;
+    const uint8_t * hid_descriptor;
+    uint16_t        hid_descriptor_size;
+
+    uint16_t        hid_report_map_handle;
+    uint8_t         hid_protocol_mode;
+    uint16_t        hid_protocol_mode_value_handle;
+
+    uint16_t        hid_boot_mouse_input_value_handle;
+    uint16_t        hid_boot_mouse_input_client_configuration_handle;
+    uint16_t        hid_boot_mouse_input_client_configuration_value;
+
+    uint16_t        hid_boot_keyboard_input_value_handle;
+    uint16_t        hid_boot_keyboard_input_client_configuration_handle;
+    uint16_t        hid_boot_keyboard_input_client_configuration_value;
+
+    hids_device_report_t * hid_reports;
+
+    uint8_t         hid_input_reports_num;
+    uint8_t         hid_output_reports_num;
+    uint8_t         hid_feature_reports_num;
+
+    uint16_t        hid_control_point_value_handle;
+    uint8_t         hid_control_point_suspend;
+
+    btstack_context_callback_registration_t  battery_callback;
+} hids_device_t;
+
+static hids_device_t hids_device;
+
+static btstack_packet_handler_t packet_handler;
+static att_service_handler_t hid_service;
+
+// TODO: store hids device connection into list
+static hids_device_t * hids_device_get_instance_for_con_handle(uint16_t con_handle) {
+    UNUSED(con_handle);
+    return &hids_device;
+}
+
+static hids_device_t * hids_device_create_instance(void) {
+    memset(&hids_device, 0, sizeof(hids_device_t));
+    return &hids_device;
+}
+
+static hids_device_report_t * hids_device_get_report_for_client_configuration_handle(hids_device_t * device, uint16_t client_configuration_handle) {
+    uint8_t pos;
+    uint8_t total_reports =  device->hid_input_reports_num + device->hid_output_reports_num + device->hid_feature_reports_num;
+    for (pos = 0 ; pos < total_reports ; pos++) {
+        if (device->hid_reports[pos].client_configuration_handle == client_configuration_handle) {
+            return &device->hid_reports[pos];
+        }
+    }
+    return NULL;
+}
+
+static hids_device_report_t *
+hids_device_get_report_for_id_and_type(hids_device_t *device, uint16_t report_id, hid_report_type_t type) {
+    uint8_t pos;
+    uint8_t total_reports =  device->hid_input_reports_num + device->hid_output_reports_num + device->hid_feature_reports_num;
+    for (pos = 0 ; pos < total_reports ; pos++) {
+        if ((device->hid_reports[pos].type == type) && (device->hid_reports[pos].id == report_id)) {
+            return &device->hid_reports[pos];
+        }
+    }
+    return NULL;
+}
+
+static void hids_device_emit_event_with_uint8(uint8_t event, hci_con_handle_t con_handle, uint8_t value) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return;
+    }
+
+    if (!packet_handler) {
+        return;
+    }
+    uint8_t buffer[6];
+    buffer[0] = HCI_EVENT_HIDS_META;
+    buffer[1] = 4;
+    buffer[2] = event;
+    little_endian_store_16(buffer, 3, (uint16_t) con_handle);
+    buffer[5] = value;
+    (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer));
+}
+
+static void hids_device_emit_event_with_uint8_uint8_t(uint8_t event, hci_con_handle_t con_handle, uint8_t value_1, uint8_t value_2) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return;
+    }
+
+    if (!packet_handler) {
+        return;
+    }
+    uint8_t buffer[7];
+    buffer[0] = HCI_EVENT_HIDS_META;
+    buffer[1] = 4;
+    buffer[2] = event;
+    little_endian_store_16(buffer, 3, (uint16_t) con_handle);
+    buffer[5] = value_1;
+    buffer[6] = value_2;
+    (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer));
+}
+
+static void hids_device_emit_event(uint8_t event, hci_con_handle_t con_handle) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return;
+    }
+
+    if (!packet_handler) {
+        return;
+    }
+    uint8_t buffer[5];
+    buffer[0] = HCI_EVENT_HIDS_META;
+    buffer[1] = 4;
+    buffer[2] = event;
+    little_endian_store_16(buffer, 3, (uint16_t) con_handle);
+    (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer));
+}
+
+static void hids_device_can_send_now(void * context) {
+    hci_con_handle_t con_handle = (hci_con_handle_t)(uintptr_t) context;
+    // notify client
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return;
+    }
+
+    if (!packet_handler) {
+        return;
+    }
+    uint8_t buffer[5];
+    buffer[0] = HCI_EVENT_HIDS_META;
+    buffer[1] = 3;
+    buffer[2] = HIDS_SUBEVENT_CAN_SEND_NOW;
+    little_endian_store_16(buffer, 3, (uint16_t) con_handle);
+    (*packet_handler)(HCI_EVENT_PACKET, 0, buffer, sizeof(buffer));
+}
+
+// ATT Client Read Callback for Dynamic Data
+// - if buffer == NULL, don't copy data, just return size of value
+// - if buffer != NULL, copy data and return number bytes copied
+static uint16_t att_read_callback(hci_con_handle_t con_handle, uint16_t att_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS;
+    }
+
+    if (att_handle == instance->hid_protocol_mode_value_handle) {
+        log_info("Read protocol mode");
+        return att_read_callback_handle_byte(instance->hid_protocol_mode, offset, buffer, buffer_size);
+    }
+
+    if (att_handle == instance->hid_report_map_handle) {
+        log_info("Read report map");
+        return att_read_callback_handle_blob(instance->hid_descriptor, instance->hid_descriptor_size, offset, buffer, buffer_size);
+    }
+
+    if (att_handle == instance->hid_boot_mouse_input_client_configuration_handle) {
+        return att_read_callback_handle_little_endian_16(instance->hid_boot_mouse_input_client_configuration_value, offset, buffer, buffer_size);
+    }
+
+    if (att_handle == instance->hid_boot_keyboard_input_client_configuration_handle) {
+        return att_read_callback_handle_little_endian_16(instance->hid_boot_keyboard_input_client_configuration_value, offset, buffer, buffer_size);
+    }
+
+    if (att_handle == instance->hid_control_point_value_handle) {
+        if (buffer && (buffer_size >= 1u)) {
+            buffer[0] = instance->hid_control_point_suspend;
+        }
+        return 1;
+    }
+
+    hids_device_report_t * report = hids_device_get_report_for_client_configuration_handle(instance, att_handle);
+    if (report != NULL) {
+        return att_read_callback_handle_little_endian_16(report->client_configuration_value, offset, buffer, buffer_size);
+    }
+    return 0;
+}
+
+static int att_write_callback(hci_con_handle_t con_handle, uint16_t att_handle, uint16_t transaction_mode, uint16_t offset, uint8_t *buffer, uint16_t buffer_size) {
+    UNUSED(transaction_mode);
+    UNUSED(buffer_size);
+    UNUSED(offset);
+
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return HIDS_DEVICE_ERROR_CODE_INAPPROPRIATE_CONNECTION_PARAMETERS;
+    }
+
+    if (att_handle == instance->hid_boot_mouse_input_client_configuration_handle) {
+        uint16_t new_value = little_endian_read_16(buffer, 0);
+        instance->hid_boot_mouse_input_client_configuration_value = new_value;
+        hids_device_emit_event_with_uint8(HIDS_SUBEVENT_BOOT_MOUSE_INPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value);
+    }
+    if (att_handle == instance->hid_boot_keyboard_input_client_configuration_handle) {
+        uint16_t new_value = little_endian_read_16(buffer, 0);
+        instance->hid_boot_keyboard_input_client_configuration_value = new_value;
+        hids_device_emit_event_with_uint8(HIDS_SUBEVENT_BOOT_KEYBOARD_INPUT_REPORT_ENABLE, con_handle, (uint8_t) new_value);
+    }
+
+    if (att_handle == instance->hid_protocol_mode_value_handle) {
+        instance->hid_protocol_mode = buffer[0];
+        log_info("Set protocol mode: %u", instance->hid_protocol_mode);
+        hids_device_emit_event_with_uint8(HIDS_SUBEVENT_PROTOCOL_MODE, con_handle, instance->hid_protocol_mode);
+    }
+
+    if (att_handle == instance->hid_control_point_value_handle) {
+        if (buffer_size < 1u) {
+            return ATT_ERROR_INVALID_OFFSET;
+        }
+        instance->hid_control_point_suspend = buffer[0];
+        instance->con_handle = con_handle;
+        log_info("Set suspend tp: %u", instance->hid_control_point_suspend);
+        if (instance->hid_control_point_suspend == 0u) {
+            hids_device_emit_event(HIDS_SUBEVENT_SUSPEND, con_handle);
+        } else if (instance->hid_control_point_suspend == 1u) {
+            hids_device_emit_event(HIDS_SUBEVENT_EXIT_SUSPEND, con_handle);
+        }
+    }
+
+    hids_device_report_t * report = hids_device_get_report_for_client_configuration_handle(instance, att_handle);
+    if (report != NULL) {
+        uint16_t new_value = little_endian_read_16(buffer, 0);
+        report->client_configuration_value = new_value;
+        log_info("Enable Report (type %u) notifications: %x", (uint8_t) report->type, new_value);
+
+        switch (report->type) {
+        case HID_REPORT_TYPE_INPUT:
+            hids_device_emit_event_with_uint8_uint8_t(HIDS_SUBEVENT_INPUT_REPORT_ENABLE, con_handle, report->id, (uint8_t) new_value);
+            break;
+        case HID_REPORT_TYPE_OUTPUT:
+            hids_device_emit_event_with_uint8_uint8_t(HIDS_SUBEVENT_OUTPUT_REPORT_ENABLE, con_handle, report->id, (uint8_t) new_value);
+            break;
+        case HID_REPORT_TYPE_FEATURE:
+            hids_device_emit_event_with_uint8_uint8_t(HIDS_SUBEVENT_FEATURE_REPORT_ENABLE, con_handle, report->id, (uint8_t) new_value);
+            break;
+        default:
+            btstack_unreachable();
+            break;
+        }
+    }
+    return 0;
+}
+
+void hids_device_init_with_storage(uint8_t hid_country_code, const uint8_t * hid_descriptor, uint16_t hid_descriptor_size,
+                                   uint16_t num_reports, hids_device_report_t * report_storage) {
+
+    hids_device_t * instance = hids_device_create_instance();
+
+    btstack_assert(num_reports > 0);
+    btstack_assert(report_storage != NULL);
+
+    instance->hid_country_code    = hid_country_code;
+    instance->hid_descriptor      = hid_descriptor;
+    instance->hid_descriptor_size = hid_descriptor_size;
+
+    // default
+    instance->hid_protocol_mode   = 1;
+
+    // get service handle range
+    uint16_t start_handle = 0;
+    uint16_t end_handle   = 0xffff;
+    int service_found = gatt_server_get_handle_range_for_service_with_uuid16(ORG_BLUETOOTH_SERVICE_HUMAN_INTERFACE_DEVICE, &start_handle, &end_handle);
+    btstack_assert(service_found != 0);
+    UNUSED(service_found);
+
+    // get report map handle
+    instance->hid_report_map_handle                               = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT_MAP);
+
+    // get report map handle
+    instance->hid_protocol_mode_value_handle                      = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_PROTOCOL_MODE);
+
+    // get value and client configuration handles for boot mouse input, boot keyboard input and report input
+    instance->hid_boot_mouse_input_value_handle                   = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT);
+    instance->hid_boot_mouse_input_client_configuration_handle    = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_MOUSE_INPUT_REPORT);
+
+    instance->hid_boot_keyboard_input_value_handle                = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT);
+    instance->hid_boot_keyboard_input_client_configuration_handle = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_BOOT_KEYBOARD_INPUT_REPORT);
+
+    instance->hid_control_point_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_HID_CONTROL_POINT);
+
+    log_info("hid_report_map_handle                               0x%02x", instance->hid_report_map_handle);
+    log_info("hid_protocol_mode_value_handle                      0x%02x", instance->hid_protocol_mode_value_handle);
+    log_info("hid_boot_mouse_input_value_handle                   0x%02x", instance->hid_boot_mouse_input_value_handle);
+    log_info("hid_boot_mouse_input_client_configuration_handle    0x%02x", instance->hid_boot_mouse_input_client_configuration_handle);
+    log_info("hid_boot_keyboard_input_value_handle                0x%02x", instance->hid_boot_keyboard_input_value_handle);
+    log_info("hid_boot_keyboard_input_client_configuration_handle 0x%02x", instance->hid_boot_keyboard_input_client_configuration_handle);
+    log_info("hid_control_point_value_handle                      0x%02x", instance->hid_control_point_value_handle);
+
+    instance->hid_reports = report_storage;
+
+    uint16_t hid_reports_num = num_reports;
+    uint16_t assigned_reports_num = 0;
+    uint16_t start_chr_handle = start_handle;
+
+    while ((start_chr_handle < end_handle) && (assigned_reports_num < hid_reports_num)) {
+        // mandatory
+        uint16_t chr_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT);
+        if (chr_value_handle == 0) {
+            break;
+        }
+
+        // optional
+        uint16_t chr_client_configuration_handle = gatt_server_get_client_configuration_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT);
+
+        // mandatory
+        uint16_t report_reference_handle = gatt_server_get_descriptor_handle_for_characteristic_with_uuid16(start_chr_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_REPORT, ORG_BLUETOOTH_DESCRIPTOR_REPORT_REFERENCE);
+        if (report_reference_handle == 0) {
+            break;
+        }
+
+        // get report id and type from report reference
+        uint16_t report_reference_value_len;
+        const uint8_t * report_reference_value = gatt_server_get_const_value_for_handle(report_reference_handle, &report_reference_value_len);
+        if (report_reference_value == NULL) {
+            break;
+        }
+        if (report_reference_value_len != 2) {
+            break;
+        }
+        uint8_t report_id = report_reference_value[0];
+        hid_report_type_t report_type = (hid_report_type_t) report_reference_value[1];
+
+        // store report info
+        hids_device_report_t * report = &report_storage[assigned_reports_num];
+        report->value_handle = chr_value_handle;
+        report->client_configuration_handle = chr_client_configuration_handle;
+        report->client_configuration_value = 0;
+        report->id   = report_id;
+        report->type = report_type;
+
+        switch (report->type) {
+        case HID_REPORT_TYPE_INPUT:
+            instance->hid_input_reports_num++;
+            break;
+        case HID_REPORT_TYPE_OUTPUT:
+            instance->hid_output_reports_num++;
+            break;
+        case HID_REPORT_TYPE_FEATURE:
+            instance->hid_feature_reports_num++;
+            break;
+        default:
+            btstack_unreachable();
+            return;
+        }
+        log_info("hid_report_value_handle                       0x%02x, id %u, type %u", report->value_handle, report->id, (uint8_t)report->type);
+        if (report->client_configuration_handle != 0) {
+            log_info("hid_report_client_configuration_handle        0x%02x", report->client_configuration_handle);
+        }
+
+        assigned_reports_num++;
+        start_chr_handle = report_reference_handle + 1;
+    }
+
+    // register service with ATT Server
+    hid_service.start_handle   = start_handle;
+    hid_service.end_handle     = end_handle;
+    hid_service.read_callback  = &att_read_callback;
+    hid_service.write_callback = &att_write_callback;
+    att_server_register_service_handler(&hid_service);
+}
+
+/**
+    @brief Set up HIDS Device
+*/
+void hids_device_init(uint8_t country_code, const uint8_t * descriptor, uint16_t descriptor_size) {
+    uint16_t hid_reports_num = sizeof(hid_reports_generic_storage) / sizeof(hids_device_report_t);
+    hids_device_init_with_storage(country_code, descriptor, descriptor_size, hid_reports_num, hid_reports_generic_storage);
+}
+
+/**
+    @brief Register callback for the HIDS Device client.
+    @param callback
+*/
+void hids_device_register_packet_handler(btstack_packet_handler_t callback) {
+    packet_handler = callback;
+}
+
+/**
+    @brief Request can send now event to send HID Report
+    Generates an HIDS_SUBEVENT_CAN_SEND_NOW subevent
+    @param hid_cid
+*/
+void hids_device_request_can_send_now_event(hci_con_handle_t con_handle) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return;
+    }
+
+    instance->battery_callback.callback = &hids_device_can_send_now;
+    instance->battery_callback.context  = (void*)(uintptr_t) con_handle;
+    att_server_register_can_send_now_callback(&instance->battery_callback, con_handle);
+}
+
+uint8_t hids_device_send_input_report_for_id(hci_con_handle_t con_handle, uint16_t report_id, const uint8_t * report, uint16_t report_len) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
+    }
+
+    hids_device_report_t * report_storage = hids_device_get_report_for_id_and_type(instance, report_id,
+                                            HID_REPORT_TYPE_INPUT);
+    if (report_storage == NULL) {
+        return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
+    }
+
+    return att_server_notify(con_handle, report_storage->value_handle, report, report_len);
+}
+
+uint8_t hids_device_send_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len) {
+    hids_device_t * device = hids_device_get_instance_for_con_handle(con_handle);
+    if (!device) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
+    }
+
+    uint8_t pos;
+    uint8_t total_reports =  device->hid_input_reports_num + device->hid_output_reports_num + device->hid_feature_reports_num;
+    for (pos = 0 ; pos < total_reports ; pos++) {
+        hids_device_report_t * report_storage = &device->hid_reports[pos];
+        if (report_storage->type == HID_REPORT_TYPE_INPUT) {
+            return att_server_notify(con_handle, report_storage->value_handle, report, report_len);
+        }
+    }
+    return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
+}
+
+/**
+    @brief Send HID Boot Mouse Input Report
+*/
+uint8_t hids_device_send_boot_mouse_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
+    }
+    return att_server_notify(con_handle, instance->hid_boot_mouse_input_value_handle, report, report_len);
+}
+
+/**
+    @brief Send HID Boot Mouse Input Report
+*/
+uint8_t hids_device_send_boot_keyboard_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len) {
+    hids_device_t * instance = hids_device_get_instance_for_con_handle(con_handle);
+    if (!instance) {
+        log_error("no instance for handle 0x%02x", con_handle);
+        return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
+    }
+    return att_server_notify(con_handle, instance->hid_boot_keyboard_input_value_handle, report, report_len);
+}
+
+#endif

cores/rp2040/sdkoverride/hids_device.h

@@ -0,0 +1,143 @@
+/*
+    Copyright (C) 2014 BlueKitchen GmbH
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the names of
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+    4. Any redistribution, use, or modification is done solely for
+      personal benefit and not for any commercial purpose or for
+      monetary gain.
+
+    THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
+    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
+    GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+    OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+    AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+    Please inquire about commercial licensing options at
+    contact@bluekitchen-gmbh.com
+
+*/
+
+/**
+    @title HID Service Server
+
+*/
+
+#ifndef HIDS_DEVICE_H
+#define HIDS_DEVICE_H
+
+#if defined ENABLE_CLASSIC
+
+#include <sdkoverride/att_db.h>
+#include <stdint.h>
+#include "btstack_defines.h"
+#include "btstack_hid.h"
+#include "bluetooth.h"
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+    /* API_START */
+
+    typedef struct {
+        uint16_t value_handle;
+        uint16_t client_configuration_handle;
+        uint16_t client_configuration_value;
+
+        hid_report_type_t type;
+        uint16_t id;
+    } hids_device_report_t;
+
+    /**
+        @text Implementation of the GATT HIDS Device
+        To use with your application, add '#import <hids.gatt>' to your .gatt file
+    */
+
+    /**
+        @brief Set up HIDS Device with single INPUT, OUTPUT and FEATURE report
+    */
+    void hids_device_init(uint8_t hid_country_code, const uint8_t * hid_descriptor, uint16_t hid_descriptor_size);
+
+    /**
+        @brief Set up HIDS Device for multiple instances of INPUT, OUTPUT and FEATURE reports
+    */
+    void hids_device_init_with_storage(uint8_t hid_country_code, const uint8_t * hid_descriptor, uint16_t hid_descriptor_size,
+                                       uint16_t num_reports, hids_device_report_t * report_storage);
+
+    /**
+        @brief Register callback for the HIDS Device client.
+        @param callback
+    */
+    void hids_device_register_packet_handler(btstack_packet_handler_t callback);
+
+    /**
+        @brief Request can send now event to send HID Report
+        Generates an HIDS_SUBEVENT_CAN_SEND_NOW subevent
+        @param hid_cid
+    */
+    void hids_device_request_can_send_now_event(hci_con_handle_t con_handle);
+
+    /**
+        @brief Send HID Input Report for Report ID
+        @param con_handle
+        @param report_id
+        @param report
+        @param report_len
+        @returns status
+    */
+    uint8_t hids_device_send_input_report_for_id(hci_con_handle_t con_handle, uint16_t report_id, const uint8_t * report, uint16_t report_len);
+
+    /**
+        @brief Send HID Input Report for first Input Report
+        @param con_handle
+        @param report
+        @param report_len
+        @returns status
+    */
+    uint8_t hids_device_send_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len);
+
+    /**
+        @brief Send HID Boot Mouse Input Report
+        @param con_handle
+        @param report
+        @param report_len
+        @returns status
+    */
+    uint8_t hids_device_send_boot_mouse_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len);
+
+    /**
+        @brief Send HID Boot Mouse Input Report
+        @param con_handle
+        @param report
+        @param report_len
+        @returns status
+    */
+    uint8_t hids_device_send_boot_keyboard_input_report(hci_con_handle_t con_handle, const uint8_t * report, uint16_t report_len);
+
+    /* API_END */
+
+#if defined __cplusplus
+}
+#endif
+
+#endif
+
+#endif

cores/rp2040/sdkoverride/inet_chksum.cpp

@@ -0,0 +1,121 @@
+// Taken from LWIP's inet_chksum.c just to set the -O2 flag
+
+/*
+    Copyright (c) 2001-2004 Swedish Institute of Computer Science.
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without modification,
+    are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    3. The name of the author may not be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+    WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+    SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+    OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+    OF SUCH DAMAGE.
+
+    This file is part of the lwIP TCP/IP stack.
+
+    Author: Adam Dunkels <adam@sics.se>
+
+*/
+
+
+
+#include "lwip/opt.h"
+
+#include "lwip/inet_chksum.h"
+#include "lwip/def.h"
+#include "lwip/ip_addr.h"
+
+#pragma GCC optimize ("O2")
+/**
+    An optimized checksum routine. Basically, it uses loop-unrolling on
+    the checksum loop, treating the head and tail bytes specially, whereas
+    the inner loop acts on 8 bytes at a time.
+
+    @arg start of buffer to be checksummed. May be an odd byte address.
+    @len number of bytes in the buffer to be checksummed.
+    @return host order (!) lwip checksum (non-inverted Internet sum)
+
+    by Curt McDowell, Broadcom Corp. December 8th, 2005
+*/
+extern "C" u16_t lwip_standard_chksum(const void *dataptr, int len) {
+    const u8_t *pb = (const u8_t *)dataptr;
+    const u16_t *ps;
+    u16_t t = 0;
+    const u32_t *pl;
+    u32_t sum = 0, tmp;
+    /* starts at odd byte address? */
+    int odd = ((mem_ptr_t)pb & 1);
+
+    if (odd && len > 0) {
+        ((u8_t *)&t)[1] = *pb++;
+        len--;
+    }
+
+    ps = (const u16_t *)(const void *)pb;
+
+    if (((mem_ptr_t)ps & 3) && len > 1) {
+        sum += *ps++;
+        len -= 2;
+    }
+
+    pl = (const u32_t *)(const void *)ps;
+
+    while (len > 7)  {
+        tmp = sum + *pl++;          /* ping */
+        if (tmp < sum) {
+            tmp++;                    /* add back carry */
+        }
+
+        sum = tmp + *pl++;          /* pong */
+        if (sum < tmp) {
+            sum++;                    /* add back carry */
+        }
+
+        len -= 8;
+    }
+
+    /* make room in upper bits */
+    sum = FOLD_U32T(sum);
+
+    ps = (const u16_t *)pl;
+
+    /* 16-bit aligned word remaining? */
+    while (len > 1) {
+        sum += *ps++;
+        len -= 2;
+    }
+
+    /* dangling tail byte remaining? */
+    if (len > 0) {                /* include odd byte */
+        ((u8_t *)&t)[0] = *(const u8_t *)ps;
+    }
+
+    sum += t;                     /* add end bytes */
+
+    /*  Fold 32-bit sum to 16 bits
+        calling this twice is probably faster than if statements... */
+    sum = FOLD_U32T(sum);
+    sum = FOLD_U32T(sum);
+
+    if (odd) {
+        sum = SWAP_BYTES_IN_WORD(sum);
+    }
+
+    return (u16_t)sum;
+}
+

cores/rp2040/sdkoverride/newlib_interface.c

@@ -0,0 +1,200 @@
+/*
+    Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+
+    SPDX-License-Identifier: BSD-3-Clause
+*/
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <time.h>
+#include <unistd.h>
+#if PICO_ENTER_USB_BOOT_ON_EXIT
+#include "pico/bootrom.h"
+#endif
+#include "pico/time.h"
+#include "pico/runtime_init.h"
+
+#if LIB_PICO_PRINTF_PICO
+#include "pico/printf.h"
+#else
+#define weak_raw_printf printf
+#define weak_raw_vprintf vprintf
+#endif
+#if LIB_PICO_STDIO
+#include "pico/stdio.h"
+#endif
+
+#if PICO_ENTER_USB_BOOT_ON_EXIT
+#include "pico/bootrom.h"
+#endif
+
+extern char __StackLimit; /* Set by linker.  */
+
+#define STDIO_HANDLE_STDIN  0
+#define STDIO_HANDLE_STDOUT 1
+#define STDIO_HANDLE_STDERR 2
+
+void __attribute__((noreturn)) __weak _exit(__unused int status) {
+#if PICO_ENTER_USB_BOOT_ON_EXIT
+    reset_usb_boot(0, 0);
+#else
+    while (1) {
+        __breakpoint();
+    }
+#endif
+}
+
+__weak void *_sbrk(int incr) {
+    extern char end; /* Set by linker.  */
+    static char *heap_end;
+    char *prev_heap_end;
+
+    if (heap_end == 0) {
+        heap_end = &end;
+    }
+
+    prev_heap_end = heap_end;
+    char *next_heap_end = heap_end + incr;
+
+    if (__builtin_expect(next_heap_end > (&__StackLimit), false)) {
+#if PICO_USE_OPTIMISTIC_SBRK
+        if (heap_end == &__StackLimit) {
+            //        errno = ENOMEM;
+            return (char *) -1;
+        }
+        next_heap_end = &__StackLimit;
+#else
+        return (char *) -1;
+#endif
+    }
+
+    heap_end = next_heap_end;
+    return (void *) prev_heap_end;
+}
+#if 0
+static int64_t epoch_time_us_since_boot;
+
+__weak int _gettimeofday(struct timeval *__restrict tv, __unused void *__restrict tz) {
+    if (tv) {
+        int64_t us_since_epoch = ((int64_t)to_us_since_boot(get_absolute_time())) - epoch_time_us_since_boot;
+        tv->tv_sec = (time_t)(us_since_epoch / 1000000);
+        tv->tv_usec = (suseconds_t)(us_since_epoch % 1000000);
+    }
+    return 0;
+}
+
+__weak int settimeofday(__unused const struct timeval *tv, __unused const struct timezone *tz) {
+    if (tv) {
+        int64_t us_since_epoch = tv->tv_sec * 1000000 + tv->tv_usec;
+        epoch_time_us_since_boot = (int64_t)to_us_since_boot(get_absolute_time()) - us_since_epoch;
+    }
+    return 0;
+}
+
+__weak int _times(struct tms *tms) {
+#if CLOCKS_PER_SEC >= 1000000
+    tms->tms_utime = (clock_t)(to_us_since_boot(get_absolute_time()) * (CLOCKS_PER_SEC / 1000000));
+#else
+    tms->tms_utime = (clock_t)(to_us_since_boot(get_absolute_time()) / (1000000 / CLOCKS_PER_SEC));
+#endif
+    tms->tms_stime = 0;
+    tms->tms_cutime = 0;
+    tms->tms_cstime = 0;
+    return 0;
+}
+
+__weak pid_t _getpid(void) {
+    return 0;
+}
+
+__weak int _kill(__unused pid_t pid, __unused int sig) {
+    return -1;
+}
+
+int __attribute__((weak)) _read(int handle, char *buffer, int length) {
+#if LIB_PICO_STDIO
+    if (handle == STDIO_HANDLE_STDIN) {
+        return stdio_get_until(buffer, length, at_the_end_of_time);
+    }
+#endif
+    return -1;
+}
+
+int __attribute__((weak)) _write(int handle, char *buffer, int length) {
+#if LIB_PICO_STDIO
+    if (handle == STDIO_HANDLE_STDOUT || handle == STDIO_HANDLE_STDERR) {
+        stdio_put_string(buffer, length, false, true);
+        return length;
+    }
+#endif
+    return -1;
+}
+
+int __attribute__((weak)) _open(__unused const char *fn, __unused int oflag, ...) {
+    return -1;
+}
+
+int __attribute__((weak)) _close(__unused int fd) {
+    return -1;
+}
+
+off_t __attribute__((weak)) _lseek(__unused int fd, __unused off_t pos, __unused int whence) {
+    return -1;
+}
+
+int __attribute__((weak)) _fstat(__unused int fd, __unused struct stat *buf) {
+    return -1;
+}
+
+int __attribute__((weak)) _isatty(int fd) {
+    return fd == STDIO_HANDLE_STDIN || fd == STDIO_HANDLE_STDOUT || fd == STDIO_HANDLE_STDERR;
+}
+
+// exit is not useful... no desire to pull in __call_exitprocs
+void exit(int status) {
+    _exit(status);
+}
+
+// incorrect warning from GCC 6
+GCC_Pragma("GCC diagnostic push")
+GCC_Pragma("GCC diagnostic ignored \"-Wsuggest-attribute=format\"")
+void __weak __assert_func(const char *file, int line, const char *func, const char *failedexpr) {
+    weak_raw_printf("assertion \"%s\" failed: file \"%s\", line %d%s%s\n",
+                    failedexpr, file, line, func ? ", function: " : "",
+                    func ? func : "");
+
+    _exit(1);
+}
+GCC_Pragma("GCC diagnostic pop")
+#endif
+void runtime_init(void) {
+#ifndef NDEBUG
+    if (__get_current_exception()) {
+        // crap; started in exception handler
+        __breakpoint();
+    }
+#endif
+
+#if !PICO_RUNTIME_SKIP_INIT_PER_CORE_INSTALL_STACK_GUARD
+    // install core0 stack guard
+    extern char __StackBottom;
+    runtime_init_per_core_install_stack_guard(&__StackBottom);
+#endif
+
+    // todo maybe we want to do this in the future, but it does stuff like register_tm_clones
+    //      which we didn't do in previous SDKs
+    //extern void __libc_init_array(void);
+    //__libc_init_array();
+
+    // ... so instead just do the __preinit_array
+    runtime_run_initializers();
+    // ... and the __init_array
+    extern void (*__init_array_start)(void);
+    extern void (*__init_array_end)(void);
+    for (void (**p)(void) = &__init_array_start; p < &__init_array_end; ++p) {
+        (*p)();
+    }
+}

cores/rp2040/sdkoverride/tusb_absmouse.h

@@ -1,101 +0,0 @@
-/*
-    Expost absolute mouse HID descriptor and report
-    Taken from @tobozo PR https://github.com/hathach/tinyusb/pull/1363
-    TODO - remove once that PR merged with TinyUSB
-
-    Copyright (c) 2023 Earle F. Philhower, III <earlephilhower@yahoo.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-#pragma once
-
-#include "tusb.h"
-#include "class/hid/hid_device.h"
-
-// Absolute Mouse: same as the Standard (relative) Mouse Report but
-// with int16_t instead of int8_t for X and Y coordinates.
-typedef struct TU_ATTR_PACKED {
-    uint8_t buttons; /**< buttons mask for currently pressed buttons in the mouse. */
-    int16_t x;       /**< Current x position of the mouse. */
-    int16_t y;       /**< Current y position of the mouse. */
-    int8_t wheel;    /**< Current delta wheel movement on the mouse. */
-    int8_t pan;      // using AC Pan
-} hid_abs_mouse_report_t;
-
-
-// Absolute Mouse Report Descriptor Template
-#define TUD_HID_REPORT_DESC_ABSMOUSE(...) \
-  HID_USAGE_PAGE ( HID_USAGE_PAGE_DESKTOP      )                   ,\
-  HID_USAGE      ( HID_USAGE_DESKTOP_MOUSE     )                   ,\
-  HID_COLLECTION ( HID_COLLECTION_APPLICATION  )                   ,\
-    /* Report ID if any */\
-    __VA_ARGS__ \
-    HID_USAGE      ( HID_USAGE_DESKTOP_POINTER )                   ,\
-    HID_COLLECTION ( HID_COLLECTION_PHYSICAL   )                   ,\
-      HID_USAGE_PAGE  ( HID_USAGE_PAGE_BUTTON  )                   ,\
-        HID_USAGE_MIN   ( 1                                      ) ,\
-        HID_USAGE_MAX   ( 5                                      ) ,\
-        HID_LOGICAL_MIN ( 0                                      ) ,\
-        HID_LOGICAL_MAX ( 1                                      ) ,\
-        /* Left, Right, Middle, Backward, Forward buttons */ \
-        HID_REPORT_COUNT( 5                                      ) ,\
-        HID_REPORT_SIZE ( 1                                      ) ,\
-        HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
-        /* 3 bit padding */ \
-        HID_REPORT_COUNT( 1                                      ) ,\
-        HID_REPORT_SIZE ( 3                                      ) ,\
-        HID_INPUT       ( HID_CONSTANT                           ) ,\
-      HID_USAGE_PAGE  ( HID_USAGE_PAGE_DESKTOP )                   ,\
-        /* X, Y absolute position [0, 32767] */ \
-        HID_USAGE       ( HID_USAGE_DESKTOP_X                    ) ,\
-        HID_USAGE       ( HID_USAGE_DESKTOP_Y                    ) ,\
-        HID_LOGICAL_MIN  ( 0x00                                ) ,\
-        HID_LOGICAL_MAX_N( 0x7FFF, 2                           ) ,\
-        HID_REPORT_SIZE  ( 16                                  ) ,\
-        HID_REPORT_COUNT ( 2                                   ) ,\
-        HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
-        /* Vertical wheel scroll [-127, 127] */ \
-        HID_USAGE       ( HID_USAGE_DESKTOP_WHEEL                )  ,\
-        HID_LOGICAL_MIN ( 0x81                                   )  ,\
-        HID_LOGICAL_MAX ( 0x7f                                   )  ,\
-        HID_REPORT_COUNT( 1                                      )  ,\
-        HID_REPORT_SIZE ( 8                                      )  ,\
-        HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_RELATIVE )  ,\
-      HID_USAGE_PAGE  ( HID_USAGE_PAGE_CONSUMER ), \
-       /* Horizontal wheel scroll [-127, 127] */ \
-        HID_USAGE_N     ( HID_USAGE_CONSUMER_AC_PAN, 2           ), \
-        HID_LOGICAL_MIN ( 0x81                                   ), \
-        HID_LOGICAL_MAX ( 0x7f                                   ), \
-        HID_REPORT_COUNT( 1                                      ), \
-        HID_REPORT_SIZE ( 8                                      ), \
-        HID_INPUT       ( HID_DATA | HID_VARIABLE | HID_RELATIVE ), \
-    HID_COLLECTION_END                                            , \
-  HID_COLLECTION_END \
-
-
-static inline bool tud_hid_abs_mouse_report(uint8_t report_id,
-        uint8_t buttons, int16_t x, int16_t y, int8_t vertical, int8_t horizontal) {
-    hid_abs_mouse_report_t report = {
-        .buttons = buttons,
-        .x       = x,
-        .y       = y,
-        .wheel   = vertical,
-        .pan     = horizontal
-    };
-
-    return tud_hid_n_report(0, report_id, &report, sizeof(report));
-}
-

cores/rp2040/sdkoverride/tusb_gamepad16.h

@@ -0,0 +1,75 @@
+/*
+    16-bit axis gamepad definition
+    Copyright (c) 2024 Earle F. Philhower, III <earlephilhower@yahoo.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#pragma once
+
+#include "tusb.h"
+#include "class/hid/hid_device.h"
+
+#define TUD_HID_REPORT_DESC_GAMEPAD16(...) \
+  HID_USAGE_PAGE ( HID_USAGE_PAGE_DESKTOP     )                 ,\
+  HID_USAGE      ( HID_USAGE_DESKTOP_GAMEPAD  )                 ,\
+  HID_COLLECTION ( HID_COLLECTION_APPLICATION )                 ,\
+    /* Report ID if any */\
+    __VA_ARGS__ \
+    /* 16 bit X, Y, Z, Rz, Rx, Ry (min -32767, max 32767 ) */ \
+    HID_USAGE_PAGE     ( HID_USAGE_PAGE_DESKTOP                 ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_X                    ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_Y                    ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_Z                    ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_RZ                   ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_RX                   ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_RY                   ) ,\
+    HID_LOGICAL_MIN_N  ( -32767, 2                              ) ,\
+    HID_LOGICAL_MAX_N  ( 32767, 2                               ) ,\
+    HID_REPORT_COUNT   ( 6                                      ) ,\
+    HID_REPORT_SIZE    ( 16                                     ) ,\
+    HID_INPUT          ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
+    /* 8 bit DPad/Hat Button Map  */ \
+    HID_USAGE_PAGE     ( HID_USAGE_PAGE_DESKTOP                 ) ,\
+    HID_USAGE          ( HID_USAGE_DESKTOP_HAT_SWITCH           ) ,\
+    HID_LOGICAL_MIN    ( 1                                      ) ,\
+    HID_LOGICAL_MAX    ( 8                                      ) ,\
+    HID_PHYSICAL_MIN   ( 0                                      ) ,\
+    HID_PHYSICAL_MAX_N ( 315, 2                                 ) ,\
+    HID_REPORT_COUNT   ( 1                                      ) ,\
+    HID_REPORT_SIZE    ( 8                                      ) ,\
+    HID_INPUT          ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
+    /* 32 bit Button Map */ \
+    HID_USAGE_PAGE     ( HID_USAGE_PAGE_BUTTON                  ) ,\
+    HID_USAGE_MIN      ( 1                                      ) ,\
+    HID_USAGE_MAX      ( 32                                     ) ,\
+    HID_LOGICAL_MIN    ( 0                                      ) ,\
+    HID_LOGICAL_MAX    ( 1                                      ) ,\
+    HID_REPORT_COUNT   ( 32                                     ) ,\
+    HID_REPORT_SIZE    ( 1                                      ) ,\
+    HID_INPUT          ( HID_DATA | HID_VARIABLE | HID_ABSOLUTE ) ,\
+  HID_COLLECTION_END \
+
+// HID Gamepad Protocol Report.
+typedef struct TU_ATTR_PACKED {
+    int16_t x;         ///< Delta x  movement of left analog-stick
+    int16_t y;         ///< Delta y  movement of left analog-stick
+    int16_t z;         ///< Delta z  movement of right analog-joystick
+    int16_t rz;        ///< Delta Rz movement of right analog-joystick
+    int16_t rx;        ///< Delta Rx movement of analog left trigger
+    int16_t ry;        ///< Delta Ry movement of analog right trigger
+    uint8_t hat;       ///< Buttons mask for currently pressed buttons in the DPad/hat
+    uint32_t buttons;  ///< Buttons mask for currently pressed buttons
+} hid_gamepad16_report_t;

cores/rp2040/tone2.pio.h

@@ -2,6 +2,8 @@
 // This file is autogenerated by pioasm; do not edit! //
 // -------------------------------------------------- //
 
+#pragma once
+
 #if !PICO_NO_HARDWARE
 #include "hardware/pio.h"
 #endif
@@ -12,6 +14,7 @@
 
 #define tone2_wrap_target 0
 #define tone2_wrap 8
+#define tone2_pio_version 0
 
 static const uint16_t tone2_program_instructions[] = {
     //     .wrap_target
@@ -32,6 +35,10 @@ static const struct pio_program tone2_program = {
     .instructions = tone2_program_instructions,
     .length = 9,
     .origin = -1,
+    .pio_version = 0,
+#if PICO_PIO_VERSION > 0
+    .used_gpio_ranges = 0x0
+#endif
 };
 
 static inline pio_sm_config tone2_program_get_default_config(uint offset) {

cores/rp2040/wiring_analog.cpp

@@ -30,7 +30,7 @@ void __clearADCPin(pin_size_t p);
 
 static uint32_t analogScale = 255;
 static uint32_t analogFreq = 1000;
-static uint32_t pwmInitted = 0;
+static uint64_t pwmInitted = 0;
 static bool scaleInitted = false;
 static bool adcInitted = false;
 static uint16_t analogWritePseudoScale = 1;
@@ -79,7 +79,7 @@ extern "C" void analogWriteResolution(int res) {
 extern "C" void analogWrite(pin_size_t pin, int val) {
     CoreMutex m(&_dacMutex);
 
-    if ((pin > 29) || !m) {
+    if ((pin >= __GPIOCNT) || !m) {
         DEBUGCORE("ERROR: Illegal analogWrite pin (%d)\n", pin);
         return;
     }
@@ -101,12 +101,12 @@ extern "C" void analogWrite(pin_size_t pin, int val) {
         }
         scaleInitted = true;
     }
-    if (!(pwmInitted & (1 << pwm_gpio_to_slice_num(pin)))) {
+    if (!(pwmInitted & (1LL << pwm_gpio_to_slice_num(pin)))) {
         pwm_config c = pwm_get_default_config();
         pwm_config_set_clkdiv(&c, clock_get_hz(clk_sys) / ((float)analogScale * analogFreq));
         pwm_config_set_wrap(&c, analogScale - 1);
         pwm_init(pwm_gpio_to_slice_num(pin), &c, true);
-        pwmInitted |= 1 << pwm_gpio_to_slice_num(pin);
+        pwmInitted |= 1LL << pwm_gpio_to_slice_num(pin);
     }
 
     val <<= analogWritePseudoScale;
@@ -125,17 +125,17 @@ extern "C" void analogWrite(pin_size_t pin, int val) {
 auto_init_mutex(_adcMutex);
 static uint8_t _readBits = 10;
 static uint8_t _lastADCMux = 0;
-static uint32_t _adcGPIOInit = 0;
+static uint64_t _adcGPIOInit = 0;
 
 void __clearADCPin(pin_size_t p) {
-    _adcGPIOInit &= ~(1 << p);
+    _adcGPIOInit &= ~(1LL << p);
 }
 
 extern "C" int analogRead(pin_size_t pin) {
     CoreMutex m(&_adcMutex);
 
-    pin_size_t maxPin = max(A0, A3);
-    pin_size_t minPin = min(A0, A3);
+    pin_size_t maxPin = __GPIOCNT;
+    pin_size_t minPin = __FIRSTANALOGGPIO;
 
     if ((pin < minPin) || (pin > maxPin) || !m) {
         DEBUGCORE("ERROR: Illegal analogRead pin (%d)\n", pin);
@@ -145,9 +145,9 @@ extern "C" int analogRead(pin_size_t pin) {
         adc_init();
         adcInitted = true;
     }
-    if (!(_adcGPIOInit & (1 << pin))) {
+    if (!(_adcGPIOInit & (1LL << pin))) {
         adc_gpio_init(pin);
-        _adcGPIOInit |= 1 << pin;
+        _adcGPIOInit |= 1LL << pin;
     }
     if (_lastADCMux != pin) {
         adc_select_input(pin - minPin);
@@ -169,7 +169,7 @@ extern "C" float analogReadTemp(float vref) {
     _lastADCMux = 0;
     adc_set_temp_sensor_enabled(true);
     delay(1); // Allow things to settle.  Without this, readings can be erratic
-    adc_select_input(4); // Temperature sensor
+    adc_select_input(__GPIOCNT - __FIRSTANALOGGPIO); // Temperature sensor
     int v = adc_read();
     adc_set_temp_sensor_enabled(false);
     float t = 27.0f - ((v * vref / 4096.0f) - 0.706f) / 0.001721f; // From the datasheet

cores/rp2040/wiring_digital.cpp

@@ -23,10 +23,15 @@
 
 extern void __clearADCPin(pin_size_t p);
 
-static PinMode _pm[30];
+static PinMode _pm[__GPIOCNT];
 
 extern "C" void pinMode(pin_size_t ulPin, PinMode ulMode) __attribute__((weak, alias("__pinMode")));
 extern "C" void __pinMode(pin_size_t ulPin, PinMode ulMode) {
+    if (ulPin >= __GPIOCNT) {
+        DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
+        return;
+    }
+
     switch (ulMode) {
     case INPUT:
         gpio_init(ulPin);
@@ -72,20 +77,16 @@ extern "C" void __pinMode(pin_size_t ulPin, PinMode ulMode) {
         return;
     }
 
-    if (ulPin > 29) {
-        DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
-        return;
-    }
     _pm[ulPin] = ulMode;
 
-    if ((ulPin >= std::min(A0, A3)) && (ulPin <= std::max(A0, A3))) {
+    if (ulPin >= __FIRSTANALOGGPIO) {
         __clearADCPin(ulPin);
     }
 }
 
 extern "C" void digitalWrite(pin_size_t ulPin, PinStatus ulVal) __attribute__((weak, alias("__digitalWrite")));
 extern "C" void __digitalWrite(pin_size_t ulPin, PinStatus ulVal) {
-    if (ulPin > 29) {
+    if (ulPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
         return;
     }
@@ -109,7 +110,7 @@ extern "C" void __digitalWrite(pin_size_t ulPin, PinStatus ulVal) {
 
 extern "C" PinStatus digitalRead(pin_size_t ulPin) __attribute__((weak, alias("__digitalRead")));
 extern "C" PinStatus __digitalRead(pin_size_t ulPin) {
-    if (ulPin > 29) {
+    if (ulPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal pin in digitalRead (%d)\n", ulPin);
         return LOW;
     }

cores/rp2040/wiring_private.cpp

@@ -23,29 +23,40 @@
 #include <hardware/gpio.h>
 #include <hardware/sync.h>
 #include <map>
+#include "_freertos.h"
+
 
 // Support nested IRQ disable/re-enable
+#ifndef maxIRQs
 #define maxIRQs 15
+#endif
 static uint32_t _irqStackTop[2] = { 0, 0 };
 static uint32_t _irqStack[2][maxIRQs];
 
 extern "C" void interrupts() {
-    auto core = get_core_num();
-    if (!_irqStackTop[core]) {
-        // ERROR
-        return;
+    if (__freeRTOSinitted) {
+        __freertos_task_exit_critical();
+    } else {
+        auto core = get_core_num();
+        if (!_irqStackTop[core]) {
+            // ERROR
+            return;
+        }
+        restore_interrupts(_irqStack[core][--_irqStackTop[core]]);
     }
-    restore_interrupts(_irqStack[core][--_irqStackTop[core]]);
 }
 
 extern "C" void noInterrupts() {
-    auto core = get_core_num();
-    if (_irqStackTop[core] == maxIRQs) {
-        // ERROR
-        panic("IRQ stack overflow");
+    if (__freeRTOSinitted) {
+        __freertos_task_enter_critical();
+    } else {
+        auto core = get_core_num();
+        if (_irqStackTop[core] == maxIRQs) {
+            // ERROR
+            panic("IRQ stack overflow");
+        }
+        _irqStack[core][_irqStackTop[core]++] = save_and_disable_interrupts();
     }
-
-    _irqStack[core][_irqStackTop[core]++] = save_and_disable_interrupts();
 }
 
 // Only 1 GPIO IRQ callback for all pins, so we need to look at the pin it's for and

cores/rp2040/wiring_pulse.cpp

@@ -26,7 +26,7 @@ extern "C" unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeo
     uint64_t start = time_us_64();
     uint64_t abort = start + timeout;
 
-    if (pin > 29) {
+    if (pin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal pin in pulseIn (%d)\n", pin);
         return 0;
     }

cores/rp2040/wiring_shift.cpp

@@ -24,11 +24,11 @@
 extern "C" uint8_t shiftIn(pin_size_t dataPin, pin_size_t clockPin, BitOrder bitOrder) {
     uint8_t value = 0;
     uint8_t i;
-    if (dataPin > 29) {
+    if (dataPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal dataPin in shiftIn (%d)\n", dataPin);
         return 0;
     }
-    if (clockPin > 29) {
+    if (clockPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal clockPin in shiftIn (%d)\n", clockPin);
         return 0;
     }
@@ -46,11 +46,11 @@ extern "C" uint8_t shiftIn(pin_size_t dataPin, pin_size_t clockPin, BitOrder bit
 
 extern "C" void shiftOut(pin_size_t dataPin, pin_size_t clockPin, BitOrder bitOrder, uint8_t val) {
     uint8_t i;
-    if (dataPin > 29) {
+    if (dataPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal dataPin in shiftOut (%d)\n", dataPin);
         return;
     }
-    if (clockPin > 29) {
+    if (clockPin >= __GPIOCNT) {
         DEBUGCORE("ERROR: Illegal clockPin in shiftOut (%d)\n", clockPin);
         return;
     }

cores/rp2040/wl_definitions.h

@@ -66,10 +66,14 @@ typedef enum {
 } wl_status_t;
 
 /* Encryption modes */
-enum wl_enc_type {  /* Values map to 802.11 encryption suites... */
+enum wl_enc_type {  /* Values map to 802.11 Cipher Algorithm Identifier */
     ENC_TYPE_WEP  = 5,
     ENC_TYPE_TKIP = 2,
+    ENC_TYPE_WPA = ENC_TYPE_TKIP,
     ENC_TYPE_CCMP = 4,
+    ENC_TYPE_WPA2 = ENC_TYPE_CCMP,
+    ENC_TYPE_GCMP = 6,
+    ENC_TYPE_WPA3 = ENC_TYPE_GCMP,
     /* ... except these two, 7 and 8 are reserved in 802.11-2007 */
     ENC_TYPE_NONE = 7,
     ENC_TYPE_AUTO = 8,

docs/a2dp.rst

@@ -0,0 +1,39 @@
+Bluetooth Audio (A2DP Source and Sink)
+======================================
+
+The PicoW can be used as a Bluetooth Audio sink or source with the ``BluetoothAudio`` class.
+Operation is generally handled "automatically" in the background so while the audio is
+playing or streaming the main application can perform other operations (like displaying
+playback info, polling buttons for controls, etc.)
+
+.. code :: cpp
+
+    #include <BluetoothAudio.h>
+    ...
+
+**Note about CPU usage:**  Bluetooth SBC audio is a compressed format.  That means
+that it takes non-trivial amounts of CPU to compress on send, or decompress on receive.
+Transmitting precompressed audio from, say, MP3 or AAC, requires first decompressing
+the source file into raw PCM and then re-compressing them in the SBC format.  You may
+want to consider overclocking in this case to avoid underflow.
+
+A2DPSink
+--------
+
+This class implements slave sink-mode operation with player control (play, pause, etc.) and
+can play the received and decoded SBC audio to ``PWMAudio``, ``I2S``, or a user-created
+`BluetoothAudioConsumer`` class.
+
+The ``A2DPSink.ino`` example demonstrates turning a PicoW into a Bluetooth headset with
+``PWMAudio``.
+
+A2DPSource
+-----------
+
+This class implements a master source-mode SBC Bluetooth A2DP audio connection which
+transmits audio using the standard ``Stream`` interface (like ``I2S`` or ``PWMAudio``.
+The main application connects to a Bluetooth speaker and then writes samples into a buffer
+that's automatically transmitted behind the scenes.
+
+The ``A2DPSource.ino`` example shows how to connect to a Bluetooth speaker, transmit
+data, and respond to commands from the speaker.

docs/analog.rst

@@ -30,7 +30,7 @@ Analog Outputs
 --------------
 The RP2040 does not have any onboard DACs, so analog outputs are
 simulated using the standard method of using pulse width modulation
-(PWM) using the RP20400's hardware PWM units.
+(PWM) using the RP2040's hardware PWM units.
 
 While up to 16 PWM channels can be generated, they are not independent
 and there are significant restrictions as to allowed pins in parallel.
@@ -40,7 +40,9 @@ Analog Output Restrictions
 --------------------------
 
 The PWM generator source clock restricts the legal combinations of
-frequency and ranges.  For example, at 1MHz only about 6 bits of range
+frequency and ranges.  
+At a CPU frequency of 133MHz, the 16 bit maximum range decreases by 1 bit for every doubling of the default PWM frequency of 1 kHz.  
+For example, at 1MHz only about 6 bits of range
 are possible.  When you define an ``analogWriteFreq`` and ``analogWriteRange``
 that can't be fulfilled by the hardware, the frequency will be preserved
 but the accuracy (range) will be reduced automatically.  Your code will

docs/bearssl-client-secure-class.rst

@@ -120,7 +120,7 @@ Valid values for min and max are `BR_TLS10`, `BR_TLS11`, `BR_TLS12`.  Min and ma
 
 
 ESP32 Compatibility
-===================
+~~~~~~~~~~~~~~~~~~~
 Simple ESP32 ``WiFiClientSecure`` compatibility is built-in, allow for some sketches to run without any modification.
 The following methods are implemented:
 

docs/bearssl-server-secure-class.rst

@@ -13,7 +13,7 @@ Similar to the `BearSSL::WiFiClientSecure` method, sets the receive and transmit
 Setting Server Certificates
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-TLS servers require a certificate identifying itself and containing its public key, and a private key they will use to encrypt information with.  The application author is responsible for generating this certificate and key, either using a self-signed generator or using a commercial certification authority.  **Do not re-use the certificates included in the examples provided.**
+TLS servers require a certificate identifying itself and containing its public key, and a private key they will use to encrypt information with.  The application author is responsible for generating this certificate and key, either using a self-signed generator or using a commercial certification authority.  **Do not reuse the certificates included in the examples provided.**
 
 This example command will generate a RSA 2048-bit key and certificate:
 

docs/bluetooth.rst

@@ -2,9 +2,6 @@ Bluetooth on PicoW Support
 ==========================
 
 As of the Pico-SDK version 1.5.0, the PicoW has **BETA** Bluetooth support.
-So, since this core builds off the SDK the best that can be suggested it
-that we have **ALPHA** Bluetooth support.  As such, bug reports are welcome,
-but Pull Requests fixing problems you find are seriously appreciated.
 
 Enabling Bluetooth
 ------------------
@@ -24,6 +21,11 @@ Bluetooth Low Energy (BLE) HID device using the same API as their USB versions.
 The ``SerialBT`` library implements a very simple SPP (Serial Port Profile)
 Serial-compatible port.
 
+Connect and use Bluetooth peripherals with the PicoW using the
+``BluetoothHIDMaster`` library.
+
+``BluetoothAudio`` (A2DP) is also supported, both sink and source.
+
 Writing Custom Bluetooth Applications
 -------------------------------------
 You may also write full applications using the ``BTStack`` standard callback
@@ -40,8 +42,8 @@ For many BTStack examples, you simply need call the included
 called afterwards to start processing (in the background).
 
 You will also need to acquire the BT ``async_context`` system lock before
-calling any BTStack APIs.  See the ``libraries/PicoBluetoothHID`` helper
-class for an example of how to do this.
+calling any BTStack APIs.  ``__lockBluetooth`` and ``unlockBluetooth`` are
+provided in the PicoW variant code.
 
 Note that if you need to modify the system ``btstack_config.h`` file, do so
 in the ``tools/libpico`` directory and rebuild the Pico SDK static library.

docs/bootsel.rst

@@ -0,0 +1,21 @@
+BOOTSEL Button
+==============
+
+The BOOTSEL button on the Pico is not connected to a standard GPIO, so
+it cannot be read using the usual ``digitalRead`` function.  It **can**,
+however, be read using a special (relatively slow) method.
+
+The ``BOOTSEL`` object implements a simple way of reading the BOOTSEL
+button.  Simply use the object ``BOOTSEL`` as a boolean (as a conditional
+in an ``if`` or ``while``, or assigning to a ``bool``):
+
+.. code:: cpp
+
+    // Print "BEEP" if the BOOTSEL button is pressed
+    if (BOOTSEL) {
+        Serial.println("BEEP!");
+        // Wait until BOOTSEL is released
+        while (BOOTSEL) {
+            delay(1);
+        }
+    }

docs/conf.py

@@ -54,9 +54,9 @@ author = u'Earle F. Philhower, III'
 # built documents.
 #
 # The short X.Y version.
-version = u'3.3.1'
+version = u'4.0.3'
 # The full version, including alpha/beta/rc tags.
-release = u'3.3.1'
+release = u'4.0.3'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

docs/contrib.rst

@@ -89,6 +89,43 @@ code that only runs on this core, use the following define.
         ~~~ your changes ~~~
         #endif
 
+Identifying RP2040, RP2530A, or RP2350B
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+To check if a board is an original RP2040
+
+.. code:: cpp
+
+    #if defined(PICO_RP2040)
+    ...OG Pico code...
+    #endif
+
+For RP2350(A or B):
+
+.. code:: cpp
+
+    #if defined(PICO_RP2350)
+    ...Pico 2 code...
+    #endif
+
+For only RP2350A variants (using the compile options, not the onboard ID register):
+
+.. code:: cpp
+
+    #if defined(PICO_RP2350) && !defined(PICO_RP2350B)
+    ...RP2350A only code...
+    #endif
+
+For only RP2350B variants (again, at compile time as identified by the selected board
+and not the chip ID register):
+
+.. code:: cpp
+
+    #if defined(PICO_RP2350B)
+    ...48-GPIO version code here
+    #endif
+
+
 Library Architectures
 ~~~~~~~~~~~~~~~~~~~~~
 
@@ -98,3 +135,4 @@ not know your new code is compatible here.
 
 Add ``rp2040`` to ``architectures`` (in ``library.properties``) and
 ``"rp2040"`` to ``platforms[]`` (in ``library.json``) to let the tools know.
+Note that even the RP2350 is identified as ``rp2040`` for this purpose.

docs/digital.rst

@@ -6,6 +6,10 @@ Board-Specific Pins
 The Raspberry Pi Pico RP2040 chip supports up to 30 digital I/O pins,
 however not all boards provide access to all pins.
 
+Pin Notation
+------------
+When using Analog or Digital I/Os, if you supply an integer it specifies the RP2040 GPIO pin to use. Using Dx or Ax notation (for example, D4 or A3) may be necessary on boards without a direct PCB pin to GPIO mapping.
+
 Input Modes
 -----------
 The Raspberry Pi Pico has 3 Input modes settings for use with `pinMode`: `INPUT`, `INPUT_PULLUP` and `INPUT_PULLDOWN`

docs/ethernet.rst

@@ -0,0 +1,172 @@
+EthernetLWIP (Wired Ethernet) Support
+=====================================
+
+Wired Ethernet interfaces are supported for all the internal networking
+libraries (``WiFiClient``, ``WiFiClientSecure``, ``WiFiServer``,
+``WiFiServerSecure``, ``WiFiUDP``, ``WebServer``, ``Updater``,
+``HTTPClient``, etc.).
+
+Using these wired interfaces is very similar to using the Pico-W WiFi
+so most examples in the core only require minor modifications to use
+a wired interface.
+
+Supported Wired Ethernet Modules
+--------------------------------
+
+* Wiznet W5100(s)
+
+* Wiznet W5500
+
+* ENC28J60
+
+
+Enabling Wired Ethernet
+-----------------------
+
+Simply replace the WiFi include at the top with:
+
+.. code:: cpp
+
+    #include <W5500lwIP.h> // Or W5100lwIP.h or ENC28J60.h
+    
+
+And add a global Ethernet object of the same type:
+
+.. code:: cpp
+
+    Wiznet5500lwIP eth(1); // Parameter is the Chip Select pin
+
+In your ``setup()`` you may adjust the SPI pins you're using to
+match your hardware (be sure they are legal for the RP2040!), or
+skip this if you're using the default ones:
+
+.. code:: cpp
+
+    void setup() {
+        SPI.setRX(0);
+        SPI.setCS(1);
+        SPI.setSCK(2);
+        SPI.setTX(3);
+        ....
+    }
+
+And finally replace the ``WiFi.begin()`` and ``WiFi.connected()``
+calls with ``eth.begin()`` and ``eth.connected()``:
+
+.. code:: cpp
+
+    void setup() {
+        ....
+        // WiFi.begin(SSID, PASS)
+        eth.begin();
+        
+        //while (!WiFi.connected()) {
+        while (!eth.connected()) {
+            Serial.print(".");
+        }
+
+        Serial.print("IP address: ");
+        //Serial.println(WiFi.localIP());
+        Serial.println(eth.localIP());
+
+        ....
+    }
+
+Adjusting LWIP Polling
+----------------------
+
+LWIP operates in a polling mode for the wired Ethernet devices.  By default it will run
+every 20ms, meaning that on average it will take half that time (10ms) before a packet
+received in the Ethernet module is received and operated upon by the Pico.  This gives
+very low CPU utilization but in some cases this latency can affect performance.
+
+Adding a call to ``lwipPollingPeriod(XXX)`` (where ``XXXX`` is the polling period in
+milliseconds) can adjust this setting on the fly.  Note that if you set it too low, the
+Pico may not have enough time to service the Ethernet port before the timer fires again,
+leading to a lock up and hang.
+
+
+Using Interrupt-Driven Handling
+-------------------------------
+
+The WizNet and ENC28J60 devices support generating an interrupt when a packet is received,
+removing the need for polling and decreasing latency.  Simply specify the SPI object to use and the
+interrupt pin when instantiating the Ethernet object:
+
+.. code:: cpp
+
+    #include <W5100lwIP.h>
+    Wiznet5100lwIP eth(SS /* Chip Select*/, SPI /* SPI interface */, 17 /* Interrupt GPIO */ );
+
+
+Adjusting SPI Speed
+-------------------
+
+By default a 4MHz clock will be used to clock data into and out of the Ethernet module.
+Depending on the module and your wiring, a higher SPI clock may increase performance (but
+too high of a clock will cause communications problems or hangs).
+
+This value may be adjusted using the ``eth.setSPISpeed(hz)`` call **before** starting the
+device.  (You may also use custom ``SPISettings`` instead via ``eth.setSPISettings(spis)```)
+
+For example, to set the W5500 to use a 30MHZ clock:
+
+.. code:: cpp
+
+    #include <W5500lwIP.h>
+    Wiznet5500lwIP eth(1);
+
+    void setup() {
+        eth.setSPISpeed(30000000);
+        lwipPollingPeriod(3);
+        ...
+        eth.begin();
+        ...
+    }
+
+Using the WIZnet W5100S-EVB-Pico
+--------------------------------
+
+You can use the onboard Ethernet chip with these drivers, in interrupt mode, by utilizing the following options:
+
+.. code:: cpp
+
+    #include <W5100lwIP.h>
+    Wiznet5100lwIP eth(17, SPI, 21);  // Note chip select is **17**
+
+    void setup() {
+        // Set SPI to the onboard Wiznet chip
+        SPI.setRX(16);
+        SPI.setCS(17);
+        SPI.setSCK(18);
+        SPI.setTX(19);
+        ...
+        eth.begin();
+        ...
+    }
+
+Example Code
+------------
+
+The following examples allow switching between WiFi and Ethernet:
+
+* ``WebServer/AdvancedWebServer``
+
+* ``HTTPClient/BasicHTTPSClient``
+
+Caveats
+-------
+
+The same restrictions for ``WiFi`` apply to these Ethernet classes, namely:
+
+* Only core 0 may run any networking related code.
+
+* In FreeRTOS, only the ``setup`` and ``loop`` task can call networking libraries, not any tasks.
+
+Special Thanks
+--------------
+
+* LWIPEthernet classes come from the ESP8266 Arduino team
+
+* Individual Ethernet drivers were written by Nicholas Humfrey
+

docs/fatfsusb.rst

@@ -0,0 +1,42 @@
+FatFSUSB
+========
+
+When the onboard flash memory is used as a ``FatFS`` filesystem, the
+``FatFSUSB`` can be used to allow exporting it to a PC as a standard
+memory stick.  The PC can then access, add, and remove files as if the
+Pico was a USB memory stick, and upon ejection the Pico can access
+any new files just as if it made them itself.
+
+(Note, if you are using LittleFS then you need to use ``SingleFileDrive``
+to export a single file, not this class, because the PC does not
+understand the LittleFS disk format.)
+
+Callbacks, Interrupt Safety, and File Operations
+------------------------------------------------
+
+The ``FatFSUSB`` library allows your application to get a callback
+when a PC attempts to mount or unmount the Pico as a FAT drive.
+
+When the drive is being used by the Pico (i.e. any ``File`` is open for
+read or write, the ``FatFS`` is not ``end()`` -ed and still mounted,
+etc.) the host may not access it.  Conversely, while the host PC is
+connected to the drive no ``FatFS`` access by the Pico is allowed.
+
+Your ``driveReady`` callback will be called when the PC attempts to mount
+the drive.  If you have any files open, then this callback can report back
+that the drive is not yet ready.  When you complete file processing, the PC
+can re-attempt to mount the drive and your callback can return ``true`` .
+
+The ``onPlug`` callback will generally ``FatFS.end()`` and set a
+global flag letting your application know not to touch the filesystem until
+the flag is cleared by the ``onUnplug`` callback (which will also do a
+``FatFS.begin()`` call).
+
+Failing to close all files **and** ``FatFS.end()`` before granting the
+PC access to flash memory will result in corruption.  FAT does not allow multiple
+writers to access the same drive.  Even mounting and only reading files from
+the PC may cause hidden writes (things like access time, etc.) which would
+also cause corruption.
+
+See the included ``Listfiles-USB`` sketch for an example of working with
+these limitations.

docs/fs.rst

@@ -18,12 +18,12 @@ The following diagram shows the flash layout used in Arduino-Pico:
 
 ::
 
-    |---------------------|-------------|----|
-    ^                     ^             ^
-    Sketch                File system   EEPROM
+    |----|---------------------|-------------|----|
+    ^    ^                     ^             ^
+    OTA  Sketch                File system   EEPROM
 
-The file system size is configurable via the IDE menus, rom 64k up to 15MB
-(assuming you have an RP2040 boad with that much flash)
+The file system size is configurable via the IDE menus, from 64k up to 15MB
+(assuming you have an RP2040 board with that much flash)
 
 **Note:** to use any of file system functions in the sketch, add the
 following include to the sketch:
@@ -33,31 +33,68 @@ following include to the sketch:
     #include "LittleFS.h" // LittleFS is declared
     // #include <SDFS.h>
     // #include <SD.h>
+    // #include <FatFS.h>
 
 
 Compatible Filesystem APIs
 --------------------------
 
-LittleFS is an onboard filesystem that sets asidesome program flash for
+LittleFS is an onboard filesystem that sets aside some program flash for
 use as a filesystem without requiring any external hardware.
 
 SDFS is a filesystem for SD cards, based on [SdFat 2.0](https://github.com/earlephilhower/ESP8266SdFat).
 It supports FAT16 and FAT32 formatted cards, and requires an external
 SD card reader.
 
-SD is the Arduino supported, somewhat old and limited SD card filesystem.
+SD is the Arduino-supported, somewhat old and limited SD card filesystem.
 It is recommended to use SDFS for new applications instead of SD.
 
-All three of these filesystems can open and manipulate ``File`` and ``Dir``
+FatFS implements a wear-leveled, FTL-backed FAT filesystem in the onboard
+flash which can be easily accessed over USB as a standard memory stick
+via FatFSUSB.
+
+All of these filesystems can open and manipulate ``File`` and ``Dir``
 objects with the same code because the implement a common end-user
 filesystem API.
 
+FatFS File System Caveats and Warnings
+--------------------------------------
+
+The FAT filesystem is ubiquitous, but it is also around 50 years old and ill
+suited to SPI flash memory due to having "hot spots" like the FAT copies that
+are rewritten many times over.  SPI flash allows a high, but limited, number
+of writes before losing the ability to write safely.  Applications like
+data loggers where many writes occur could end up wearing out the SPI flash
+sector that holds the FAT **years** before coming close to the write limits of
+the data sectors.
+
+To circumvent this issue, the FatFS implementation here uses a flash translation
+layer (FTL) developed for SPI flash on embedded systems.  This allows for the
+same LBA to be written over and over by the FAT filesystem, but use different
+flash locations.  For more information see
+[SPIFTL](https://github.com/earlephilhower/SPIFTL).  In this mode the Pico
+flash appears as a normal, 512-byte sector drive to the FAT.
+
+What this means, practically, is that about 5KB of RAM per megabyte of flash
+is required for housekeeping.  Writes can also become very slow if most of the
+flash LBA range is used (i.e. if the FAT drive is 99% full) due to the need
+for garbage collection processes to move data around and preserve the flash
+lifetime.
+
+Alternatively, if an FTL is not desired or memory is tight, FatFS can use the
+raw flash directly.  In this mode sectors are 4K in size and flash is mapped
+1:1 to sectors, so things like the FAT table updates will all use the same
+physical flash bits.  For low-utilization operations this may be fine, but if
+significant writes are done (from the Pico or the PC host) this may wear out
+portions of flash very quickly , rendering it unusable.
+
 LittleFS File System Limitations
 --------------------------------
 
 The LittleFS implementation for the RP2040 supports filenames of up
-to 31 characters + terminating zero (i.e. ``char filename[32]``), and
-as many subdirectories as space permits.
+to 254 characters + terminating zero (i.e. ``char filename[255]`` or
+better ``char filename[LFS_NAME_MAX]`` ), and as many subdirectories
+as space permits.
 
 Filenames are assumed to be in the root directory if no initial "/" is
 present.
@@ -75,22 +112,28 @@ Uploading Files to the LittleFS File System
 menu item to **Tools** menu for uploading the contents of sketch data
 directory into a new LittleFS flash file system.
 
+**IDE 1.x**
+
 -  Download the tool: https://github.com/earlephilhower/arduino-pico-littlefs-plugin/releases
--  In your Arduino sketchbook directory, create ``tools`` directory if
-   it doesn't exist yet.
--  Unpack the tool into ``tools`` directory (the path will look like
-   ``<home_dir>/Arduino/tools/PicoLittleFS/tool/picolittlefs.jar``)
+-  In your Arduino sketchbook directory, create ``tools`` directory if it doesn't exist yet.
+-  Unpack the tool into ``tools`` directory (the path will look like ``<home_dir>/Arduino/tools/PicoLittleFS/tool/picolittlefs.jar``)
    If upgrading, overwrite the existing JAR file with the newer version.
 -  Restart Arduino IDE.
 -  Open a sketch (or create a new one and save it).
 -  Go to sketch directory (choose Sketch > Show Sketch Folder).
--  Create a directory named ``data`` and any files you want in the file
-   system there.
+-  Create a directory named ``data`` and any files you want in the file system there.
 -  Make sure you have selected a board, port, and closed Serial Monitor.
--  Double check theSerial Monitor is closed.  Uploads will fail if the Serial
-   Monitor has control of the serial port.
--  Select ``Tools > Pico LittleFS Data Upload``. This should start
-   uploading the files into the flash file system.
+-  Double check the Serial Monitor is closed.  Uploads will fail if the Serial Monitor has control of the serial port.
+-  Select ``Tools > Pico LittleFS Data Upload``. This should start uploading the files into the flash file system.
+
+**IDE 2.x**
+
+-  Download the new tool: https://github.com/earlephilhower/arduino-littlefs-upload/releases
+-  Exit the IDE, if running
+-  Copy the VSIX file manually to (Linux/Mac) ``~/.arduinoIDE/plugins/`` (you may need to make this directory yourself beforehand) or to (Windows) ``C:\Users\<username>\.arduinoIDE\``
+-  Restart the IDE
+-  Double check the Serial Monitor is closed.  Uploads will fail if the Serial Monitor has control of the serial port.
+-  Enter ``[Ctrl]`` + ``[Shift]`` + ``[P]`` to bring up the command palette, then select/type ``Upload LittleFS to Pico/ESP8266``
 
 SD Library Information
 ----------------------
@@ -109,8 +152,50 @@ second SPI port, ``SPI1``.  Just use the following call in place of
     SD.begin(cspin, SPI1);
 
 
-File system object (LittleFS/SD/SDFS)
--------------------------------------
+Using VFS (Virtual File System) for POSIX support
+-------------------------------------------------
+The ``VFS`` library enables sketches to use standard POSIX file I/O operations using
+standard ``FILE *`` operations.  Include the ``VFS`` library in your application and
+add a call to map the ``VFS.root()`` to your filesystem.  I.e.:
+
+.. code:: cpp
+
+    #include <VFS.h>
+    #include <LittleFS.h>
+
+    void setup() {
+      LittleFS.begin();
+      VFS.root(LittleFS);
+      FILE *fp = fopen("/thisfilelivesonflash.txt", "w");
+      fprintf(fp, "Hello!\n");
+      fclose(fp);
+    }
+
+Multiple filesystems can be ``VFS.map()`` into the VFS namespace under different directory
+names.  For example, the following will make files on ``/sd`` reside on an external\
+SD card and files on ``/lfs`` live in internal flash.
+
+.. code:: cpp
+
+    #include <VFS.h>
+    #include <LittleFS.h>
+    #include <SDFS.h>
+
+    void setup() {
+      LittleFS.begin();
+      SDFS.begin();
+      VFS.map("/lfs", LittleFS);
+      VFS.map("/sd", SDFS);
+      FILE *onSD = fopen("/sd/thislivesonsd.txt", "wb");
+      ....
+    }
+
+See the examples in the ``VFS`` library for more information.
+
+
+
+File system object (LittleFS/SD/SDFS/FatFS)
+-------------------------------------------
 
 setConfig
 ~~~~~~~~~
@@ -125,14 +210,22 @@ setConfig
     c2.setCSPin(12);
     SDFS.setConfig(c2);
 
+    FatFSConfig c3;
+    c3.setUseFTL(false); // Directly access flash memory
+    c3.setDirEntries(256); // We need 256 root directory entries on a format()
+    c3.setFATCopies(1); // Only 1 FAT to save 4K of space and extra writes
+    FatFS.setConfig(c3);
+    FatFS.format(); // Format using these settings, erasing everything
+
 This method allows you to configure the parameters of a filesystem
 before mounting.  All filesystems have their own ``*Config`` (i.e.
 ``SDFSConfig`` or ``LittleFSConfig`` with their custom set of options.
 All filesystems allow explicitly enabling/disabling formatting when
 mounts fail.  If you do not call this ``setConfig`` method before
 perforing ``begin()``, you will get the filesystem's default
-behavior and configuration. By default, SPIFFS will autoformat the
-filesystem if it cannot mount it, while SDFS will not.
+behavior and configuration. By default, LittleFS and FatFS will autoformat the
+filesystem if it cannot mount it, while SDFS will not.  FatFS will also use
+the built-in FTL to support 512 byte sectors and higher write lifetime.
 
 begin
 ~~~~~
@@ -144,11 +237,10 @@ begin
 
 This method mounts file system. It must be called before any
 other FS APIs are used. Returns *true* if file system was mounted
-successfully, false otherwise.  With no options it will format SPIFFS
-if it is unable to mount it on the first try.
+successfully, false otherwise.
 
 Note that LittleFS will automatically format the filesystem
-if one is not detected.  This is configurable via ``setConfig``
+if one is not detected.  This is configurable via ``setConfig``.
 
 end
 ~~~
@@ -181,8 +273,8 @@ open
 
 Opens a file. ``path`` should be an absolute path starting with a slash
 (e.g. ``/dir/filename.txt``). ``mode`` is a string specifying access
-mode. It can be one of "r", "w", "a", "r+", "w+", "a+". Meaning of these
-modes is the same as for ``fopen`` C function.
+mode. It can be one of "r", "w", "a", "r+", "w+", "a+". The meaning of these
+modes is the same as for the ``fopen`` C function.
 
 ::
 
@@ -258,8 +350,6 @@ openDir
     or LittleFS.openDir(path)
 
 Opens a directory given its absolute path. Returns a *Dir* object.
-Please note the previous discussion on the difference in behavior between
-LittleFS and SPIFFS for this call.
 
 remove
 ~~~~~~
@@ -283,8 +373,8 @@ rename
 Renames file from ``pathFrom`` to ``pathTo``. Paths must be absolute.
 Returns *true* if file was renamed successfully.
 
-info  **DEPRECATED**
-~~~~~~~~~~~~~~~~~~~~
+info
+~~~~
 
 .. code:: cpp
 
@@ -293,9 +383,8 @@ info  **DEPRECATED**
 
 Fills `FSInfo structure <#filesystem-information-structure>`__ with
 information about the file system. Returns ``true`` if successful,
-``false`` otherwise.  Because this cannot report information about
-filesystemd greater than 4MB, don't use it in new code.  Use ``info64``
-instead which uses 64-bit fields for filesystem sizes.
+``false`` otherwise. ``ìnfo()`` has been updated to support filesystems 
+greater than 4GB and ``FSInfo64`` and ``info64()`` have been discarded.
 
 Filesystem information structure
 --------------------------------
@@ -303,8 +392,8 @@ Filesystem information structure
 .. code:: cpp
 
     struct FSInfo {
-        size_t totalBytes;
-        size_t usedBytes;
+        uint64_t totalBytes;
+        uint64_t usedBytes;
         size_t blockSize;
         size_t pageSize;
         size_t maxOpenFiles;
@@ -319,19 +408,6 @@ block size - ``pageSize`` — filesystem logical page size - ``maxOpenFiles``
 ``maxPathLength`` — max file name length (including one byte for zero
 termination)
 
-info64
-~~~~~~
-
-.. code:: cpp
-
-    FSInfo64 fsinfo;
-    SDFS.info64(fsinfo);
-    or LittleFS.info64(fsinfo);
-
-Performs the same operation as ``info`` but allows for reporting greater than
-4GB for filesystem size/used/etc.  Should be used with the SD and SDFS
-filesystems since most SD cards today are greater than 4GB in size.
-
 setTimeCallback(time_t (\*cb)(void))
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -550,8 +626,8 @@ close
 Close the file. No other operations should be performed on *File* object
 after ``close`` function was called.
 
-openNextFile  (compatibiity method, not recommended for new code)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+openNextFile  (compatibility method, not recommended for new code)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. code:: cpp
 
@@ -562,8 +638,8 @@ openNextFile  (compatibiity method, not recommended for new code)
 Opens the next file in the directory pointed to by the File.  Only valid
 when ``File.isDirectory() == true``.
 
-rewindDirectory  (compatibiity method, not recommended for new code)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+rewindDirectory  (compatibility method, not recommended for new code)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. code:: cpp
 

docs/hidmaster.rst

@@ -0,0 +1,208 @@
+Bluetooth HID Master
+====================
+
+The PicoW can connect to a Bluetooth Classic or Bluetooth BLE keyboard,
+mouse, or joystick and receive input events from it.  As opposed to
+the ``Keyboard``, ``Mouse``, and ``Joystick`` libraries, which make
+the PicoW into a peripheral others can use, this lets the PicoW use the
+same kinds of peripherals in a master rols.
+
+BTDeviceInfo Class
+------------------
+
+The ``BluetoothHCI`` class implements a scanning function for classic
+and BLE devices and can return a ``std::vector`` of discovered devices to an application.
+Iterate over the list using any of the STL iteration methods (i.e. ``for (auto e : list)``).
+The elements of this list are ``BTDeviceInfo`` objects which have the following
+member functions:
+
+``BTDeviceInfo::deviceClass()`` returns the Bluetooth BLE UUID or the Blustooth device
+class for the device.  This specifies the general class of the device (keyboard, mouse,
+etc.).
+
+``BTDeviceInfo::address()`` and ``BTDeviceInfo::addressString()`` return the
+Bluetooth address as a binary array or a string that can be used to ``print``.
+
+``BTDeviceInfo::addressType()`` returns whether the BLE address is random or not, and
+is not generally needed by a user application.
+
+``BTDeviceInfo::rssi()`` returns an approximate dB level for the device.  Less
+negative is stronger signal.
+
+``BTDeviceInfo::name()`` returns the advertised name of the device, if present.  Some
+devices or scans do not return names for valid devices.
+
+
+BluetoothHCI Class
+------------------
+
+The ``BluetoothHCI`` class is responsible for scanning for devices and the lower-level
+housekeeping for a master-mode Bluetooth application.  Most applications will not need
+to access it directly, but it can be used to discover nearby BT devices.  As
+part of the application Bluetooth setup, call ``BluetoothHCI::install()`` and then
+``BluetoothHCI::begin()`` to start BT processing.  Your application is still responsible
+for all the non-default HCI initialization and customization.  See the ``BluetoothScanner.ino``
+example for more info.
+
+
+BluetoothHIDMaster Operation
+----------------------------
+
+Most applications will use the ``BluetoothHIDMaster`` class and, after connecting, receive
+callbacks from the Bluetooth stack when input events (key presses, mouse moves, button
+mashes) occur.
+
+Application flow will generally be:
+1. Install the appropriate callbacks using the ``BluetoothHIDMaster::onXXX`` methods
+2. Start the Bluetooth processing with ``BluetoothHIDMaster::begin()`` or ``BluetoothHIDMaster::beginBLE()``
+3. Connect to the first device found with ``BluetoothHIDMaster::connectXXX()`` and start receiving callbacks.
+4. Callbacks will come at interrupt time and set global state variables, which the main ``loop()`` will process
+
+Callback Event Handlers
+-----------------------
+The main application is informed of new inputs via a standard callback mechanism.  These callbacks run at
+interrupt time and should not do significant work, ``delay()``, or allocate or free memory.  The most common
+way of handling this is setting global ``volatile`` flags and variables that the main ``loop()`` will poll
+and process.
+
+Mouse Callbacks
+~~~~~~~~~~~~~~~
+The ``BluetoothHIDMaster::onMouseMove`` callback gets the delta X, Y, and wheel reported by the device.
+The ``BluetoothHIDMaster::onMouseButton`` gets a button number and state (up or down) and will be called
+each time an individual button is reported changed by the mouse.
+
+.. code :: cpp
+
+    void mouseMoveCB(void *cbdata, int dx, int dy, int dw) {
+        // Process the deltas, adjust global mouse state
+    }
+
+    void mouseButtonCB(void *cbdata, int butt, bool down) {
+        // Set the global button array with this new info
+    }
+
+
+Meyboard Callbacks
+~~~~~~~~~~~~~~~~~~
+The `BluetoothHIDMaster::onKeyDown`` callback receives the raw HID key (**NOT ASCII**) sent by the device on a key press
+while `BluetoothHIDMaster::onKeyUp`` gets the same when a key is released.  Note that up to 6 keys can be pressed at any
+one time.  For media keys ("consumer keys" in the USB HID documentation) the ``BluetoothHIDMaster::onConsumerKeyDown`` and
+``BluetoothHIDMaster::onConsumerKeyUp`` perform the same function (and receive the consumer key IDs defined by the
+USB HID spec and not ASCII).
+
+To convert the key press and release (including SHIFT handling), use a ``HIDKeyStream`` object.  Simply write the raw
+HID key and the up/down state to the stream and read back the ASCII for use in an application.
+
+.. code :: cpp
+
+    HIDKeyStream keystream;
+
+    void keyDownCB(void *cbdata, int key) {
+        keystream.write((uint8_t )key);
+        keystream.write((uint8_t) true); // Keystream now has 1 ASCII character to read out and use
+        char ascii = keystream.read();
+        // ....
+    }
+
+    void keyUpCB(void *cbdata, int key) {
+        // Normally don't do anything on this, the character was read in the keyDownCB
+    }
+
+    void consumerKeyDownCB(void *cbdata, int key) {
+        // switch(key) and use cases from the USB Consumer Key page
+    }
+
+    void consumerKeyUpCB(void *cbdata, int key) {
+        // switch(key) and use cases from the USB Consumer Key page
+    }
+
+
+Joystick Callbacks
+~~~~~~~~~~~~~~~~~~
+A single ``BluetoothHIDMaster::onJoystick`` callback gets activated every time a report from a joystick is processed.
+It receives (potentially, if supported by the device) 4 analog axes, one 8-way digital hat switch position, and up
+to 32 button states at a time.
+
+.. code :: cpp
+
+    void joystickCB(void *cbdata, int x, int y, int z, int rz, uint8_t hat, uint32_t buttons) {
+        // HAT 0 = UP and continues clockwise.  If no hat direction it is set to 0x0f.
+        // Use "buttons & (1 << buttonNumber)" to look at the individual button states
+        // ...
+    }
+
+PianoKeyboard Example
+~~~~~~~~~~~~~~~~~~~~~
+See the ``PianoKeyboard.ino`` and ``PianoKeyboardBLE.ino`` examples for more information on callback operation.
+
+
+BluetoothHIDMaster::onXXX Callback Installers
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code :: cpp
+
+    void BluetoothHIDMaster::onMouseMove(void (*)(void *, int, int, int), void *cbData = nullptr);
+    void BluetoothHIDMaster::onMouseButton(void (*)(void *, int, bool), void *cbData = nullptr);
+    void BluetoothHIDMaster::onKeyDown(void (*)(void *, int), void *cbData = nullptr);
+    void BluetoothHIDMaster::onKeyUp(void (*)(void *, int), void *cbData = nullptr);
+    void BluetoothHIDMaster::onConsumerKeyDown(void (*)(void *, int), void *cbData = nullptr);
+    void BluetoothHIDMaster::onConsumerKeyUp(void (*)(void *, int), void *cbData = nullptr);
+    void BluetoothHIDMaster::onJoystick(void (*)(void *, int, int, int, int, uint8_t, uint32_t), void *cbData = nullptr);
+
+BluetoothHIDMaster Class
+------------------------
+
+bool BluetoothHIDMaster::begin()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Installs and configures the Bluetooth Classic stack and starts processing events.  No connections are made at this point.
+When running in Classic mode, no BLE devices can be detected or used.
+
+
+bool BluetoothHIDMaster::begin(const char *BLEName)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Installs and configures the Bluetooth BLE stack and starts processing events.  No connections are made at this point.
+When running in BLE mode, no Classic devices can be detected or used.
+
+bool BluetoothHIDMaster::connected()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Returns if the Bluetooth stack is up and running and a connection to a device is currently active.
+
+void BluetoothHIDMaster::end()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Disables the Bluetooth stack.  Note that with the current Bluetooth implementation restarting the stack (i.e. calling ``begin()`` after ``end()``) is not stable and will not work.  Consider storing state and rebooting completely if this is necessary.
+
+bool BluetoothHIDMaster::running()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Returns if the Bluetooth stack is running at all.  Does not indicate if there is an active connection or not.
+
+bool BluetoothHIDMaster::hciRunning()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Returns if the Bluetooth stack has passed the initial HCI start up phase.  Until this returns ``true`` no Bluetooth operations can be performed.
+
+std::vector<BTDeviceInfo> BluetoothHIDMaster::scan(uint32_t mask, int scanTimeSec, bool async)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Passes through the ``BluetoothHCI::scan()`` function to manually scan for a list of nearby devices.  If you want to connect to the first found device, this is not needed.
+
+bool BluetoothHIDMaster::connect(const uint8_t *addr)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Start the connection process to the Bluetooth Classic device with the given MAC.  Note that this returns immediately, but it may take several seconds until ``connected()`` reports that the connection has been established.
+
+bool BluetoothHIDMaster::connectKeyboard(), connectMouse(), connectJoystick(), connectAny()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Connect to the first found specified Bluetooth Classic device type (or any HID device) in pairing mode.  No need to call ``scan()`` or have an address.
+
+bool BluetoothHIDMaster::connectBLE(const uint8_t *addr, int addrType)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Start the connection process to the Bluetooth BLE device with the given MAC.  Note that this returns immediately, but it may take several seconds until ``connected()`` reports that the connection has been established.
+
+bool BluetoothHIDMaster::connectBLE()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Connect to the first found BLE device that has a HID service UUID (keyboard, mouse, or joystick)
+
+bool BluetoothHIDMaster::disconnect()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Shuts down the connection to the currently connected device.
+
+void BluetoothHIDMaster::clearPairing()
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Erases all Bluetooth keys from memory.  This effectively "forgets" all pairing between devices and can help avoid issues with the beta Bluetooth stack in the SDK.

docs/i2s.rst

@@ -81,6 +81,15 @@ Enables LSB-J format for I2S output.  In this mode the MSB comes out at the
 same time as the LRCLK changes, and not the normal 1-cycle delay.  Useful for
 DAC chips like the PT8211.
 
+bool setTDMFormat()
+~~~~~~~~~~~~~~~~~~~
+Enabled TDM formatted multi-channel output.  Be sure to set the number of channels to
+the expected value (8 normally) and the bits per sample to 32.
+
+bool setTDMChannels(int channels)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Sets the number of TDM channels between frame syncs.  Generally should be set to 8.
+
 bool swapClocks()
 ~~~~~~~~~~~~~~~~~
 Certain boards are hardwired with the WCLK before the BCLK, instead of the normal

docs/ide.rst

@@ -1,15 +1,11 @@
 IDE Menus
 =========
 
-Model
+Board
 -----
-Use the boards menu to select your model of RP2040 board.  There will be two
-options:  `Boardname` and `Boardname (Picoprobe)`.  If you want to use a
-Picoprobe to upload your sketches and not the default automatic UF2 upload,
-use the `(Picoprobe)` option, otherwise use the normal name.  No functional
-or code changes are done because of this.
+Use the boards menu to select your model of RP2040 board.  
 
-There is also a `Generic` board which allows you to individually select
+There is also a `Generic RP2040` board which allows you to individually select
 things such as flash size or boot2 flash type.  Use this if your board isn't
 yet fully supported and isn't working with the normal `Raspberry Pi Pico`
 option.

docs/index.rst

@@ -2,12 +2,12 @@ Arduino-Pico
 ============
 
 This is the documentation for the Raspberry Pi Pico Arduino core,
-Arduino-Pico.  Arduino-Pico is a community port of the RP2040
-(Raspberry Pi Pico processor) to the Arduino ecosystem, intended
-to make it easier and more fun to use and program the Raspberry Pi
-Pico / RP2040 based boards.
+Arduino-Pico.  Arduino-Pico is a community port of Arduino to the
+RP2040 (Raspberry Pi Pico processor) and RP2350 (Raspberry Pi Pico 2
+processor), intended to make it easier and more fun to use and
+program the Raspberry Pi Pico / RP2040 / RP2350 based boards.
 
-This Arduino core uses a custom toolset with GCC 10.3 and Newlib 4.0.0
+This Arduino core uses a custom toolset with GCC 12.3 and Newlib 4.0.0
 and doesn't require any system-installed prerequisites.
 
 For the latest version, always check https://github.com/earlephilhower/arduino-pico
@@ -26,10 +26,11 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
 
    Pin (Re)Assignment <pins>
 
-   RP2040 Helper <rp2040>
+   RP2040/RP2350 Helper <rp2040>
 
    Analog I/O <analog>
    Digital I/O <digital>
+   BOOTSEL Button <bootsel>
    EEPROM <eeprom>
    I2S Audio <i2s>
    PWM Audio <pwm>
@@ -43,13 +44,20 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
    USB (Arduino and Adafruit_TinyUSB) <usb>
    Multicore Processing <multicore>
 
-   Bluetooth (Alpha/Beta) <bluetooth>
+   RP2350 Specific Notes <rp2350>
+   RP2350 PSRAM <psram>
+
+   Bluetooth <bluetooth>
+   Bluetooth HID Master <hidmaster>
+   Bluetooth Audio (A2DP) <a2dp>
 
    Single File USB Drive <singlefile>
+   FatFSUSB - full FS access over USB <fatfsusb>
 
    FreeRTOS SMP (multicore) <freertos>
 
    WiFi (Pico-W Support) <wifi>
+   Ethernet (Wired) <ethernet>
    WiFiClient <wificlient>
    WiFiServer <wifiserver>
    WiFiUDP <wifiudp>
@@ -65,4 +73,5 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
    Ported/Optimized Libraries <libraries>
    Using Pico-SDK <sdk>
 
+
    Licenses <license>

docs/install.rst

@@ -26,9 +26,7 @@ Arduino IDE Installation Warning
 the actual Arduino application because it has issues detecting attached Pico
 boards.  Use the "Windows ZIP" or plain "Windows" executable (EXE) download
 direct from https://arduino.cc. and allow it to install any device drivers
-it suggests.  Otherwise the Pico board may not be detected.  Also, if trying
-out the 2.0 beta Arduino please install the release 1.8 version beforehand
-to ensure needed device drivers are present.
+it suggests.  Otherwise the Pico board may not be detected.
 
 **Note for Linux Users**: If you installed the Arduino IDE using Flatpak, which 
 is common in Pop!_OS, Fedora, and Mint, among others, you may need to configure 
@@ -141,11 +139,13 @@ Uploading Filesystem Images
 ---------------------------
 The onboard flash filesystem for the Pico, LittleFS, lets you upload a filesystem image from the sketch directory for your sketch to use.  Download the needed plugin from
 
-* https://github.com/earlephilhower/arduino-pico-littlefs-plugin/releases
+* `IDE 1.x`: https://github.com/earlephilhower/arduino-pico-littlefs-plugin/releases
+* `IDE 2.x`: https://github.com/earlephilhower/arduino-littlefs-upload/releases
 
 To install, follow the directions in 
 
-* https://github.com/earlephilhower/arduino-pico-littlefs-plugin/blob/master/README.md 
+* `IDE 1.x`: https://github.com/earlephilhower/arduino-pico-littlefs-plugin/blob/master/README.md
+* `IDE 2.x`: https://github.com/earlephilhower/arduino-littlefs-upload/blob/main/README.md
 
 For detailed usage information, please check the repo documentation available at
 
@@ -159,12 +159,6 @@ So for the first sketch you will need to rebuild (with the ``Upload Method->Pico
 
 After the initial upload, as long as the running binary was built using the ``Picotool`` upload method, then the normal upload process should work.
 
-Under MacOS, it may be necessary to install the USB support libraries from a command terminal before the ``Picotool`` upload method can be used:
-
-.. code::
-
-        brew install libusb
-
 For Ubuntu and other Linux operating systems you may need to add the following lines to a new `udev` config file(``99-picotool.rules``) to allow normal users to access the special USB device the Pico exports:
 
 .. code::
@@ -190,11 +184,9 @@ The first line creates a file with the USB vendor and ID of the Picoprobe and te
 
 Once Picoprobe permissions are set up properly, then select the board "Raspberry Pi Pico (Picoprobe)" in the Tools menu and upload as normal.
 
-Uploading Sketches with pico-debug
-----------------------------------
-pico-debug differs from Picoprobe in that pico-debug is a virtual debug pod that runs side-by-side on the same RP2040 that you run your code on; so, you only need one RP2040 board instead of two.  pico-debug also differs from Picoprobe in that pico-debug is standards-based; it uses the CMSIS-DAP protocol, which means even software not specially written for the Raspberry Pi Pico can support it.  pico-debug uses OpenOCD to handle your sketch uploads, and debugging can be accomplished with CMSIS-DAP capable debuggers including GDB.
-
-Under Windows and macOS, any user should be able to access pico-debug automatically, but under Linux `udev` must be told about the device and to allow normal users access.
+Uploading Sketches with OpenOCD
+-------------------------------
+Under Windows and macOS, any user should be able to access OpenOCD automatically, but under Linux `udev` must be told about the device and to allow normal users access.
 
 To set up user-level access to all CMSIS-DAP adapters on Ubuntu (and other OSes which use `udev`):
 
@@ -205,10 +197,8 @@ To set up user-level access to all CMSIS-DAP adapters on Ubuntu (and other OSes
 
 The first line creates a file that recognizes all CMSIS-DAP adapters and tells UDEV to give users full access to it.  The second causes `udev` to load this new rule.  Note that you will need to unplug and re-plug in your device the first time you create this file, to allow udev to make the device node properly.
 
-Once CMSIS-DAP permissions are set up properly, then select the board "Raspberry Pi Pico (pico-debug)" in the Tools menu.
+Once CMSIS-DAP permissions are set up properly, then select the Upload Method "Picoprobe/Debugprobe (CMSIS-DAP)" in the Tools menu.
 
-When first connecting the USB port to your PC, you must copy pico-debug-gimmecache.uf2 to the Pi Pico to load pico-debug into RAM; after this, upload as normal.
-
-Debugging with Picoprobe/pico-debug, OpenOCD, and GDB
+Debugging with Picoprobe/Debugprobe, OpenOCD, and GDB
 -----------------------------------------------------
-The installed tools include a version of OpenOCD (in the pqt-openocd directory) and GDB (in the pqt-gcc directory).  These may be used to run GDB in an interactive window as documented in the Pico Getting Started manuals from the Raspberry Pi Foundation.  For pico-debug, replace the raspberrypi-swd and picoprobe example OpenOCD arguments of "-f interface/raspberrypi-swd.cfg -f target/rp2040.cfg" or "-f interface/picoprobe.cfg -f target/rp2040.cfg" respectively in the Pico Getting Started manual with "-f board/pico-debug.cfg".
+The installed tools include a version of OpenOCD (in the pqt-openocd directory) and GDB (in the pqt-gcc directory).  These may be used to run GDB in an interactive window as documented in the Pico Getting Started manuals from the Raspberry Pi Foundation.

docs/license.rst

@@ -10,5 +10,5 @@ In addition, it contains code from additional open source projects:
 * The `Pico-SDK <https://github.com/raspberrypi/pico-sdk>`_ and `Pico-Extras <https://github.com/raspberrypi/pico-extras>`_ are by Raspberry Pi (Trading) Ltd. and licensed under the BSD 3-Clause license.
 * `Arduino-Pico <https://github.com/earlephilhower/arduino-pico>`_ core files are licenses under the LGPL.
 * `LittleFS <https://github.com/ARMmbed/littlefs>`_ library written by ARM Limited and released under the `BSD 3-clause license <https://github.com/ARMmbed/littlefs/blob/master/LICENSE.md>`_ .
-* `UF2CONV.PY <https://github.com/microsoft/uf2>`_ is by Microsoft Corporatio and licensed under the MIT license.
+* `UF2CONV.PY <https://github.com/microsoft/uf2>`_ is by Microsoft Corporation and licensed under the MIT license.
 * Some filesystem code taken from the `ESP8266 Arduino Core <https://github.com/esp8266/Arduino>`_ and licensed under the LGPL.

docs/multicore.rst

@@ -16,11 +16,32 @@ not necessarily simultaneously!).
 See the ``Multicore.ino`` example in the ``rp2040`` example directory for a
 quick introduction.
 
+Stack Sizes
+-----------
+
+When the Pico is running in single core mode, core 0 has the full 8KB of stack
+space available to it.  When using multicore ``setup1``/``loop1`` the 8KB is split
+into two 4K stacks, one per core.  It is possible for core 0's stack to overwrite
+core 1's stack in this case, if you go beyond the 4K limitation.
+
+To allocate a separate 8K stack for core 1, resulting in 8K stacks being available
+for both cores, simply define the following variable in your sketch and set it
+to ``true``:
+
+.. code:: cpp
+
+    bool core1_separate_stack = true;
+
 Pausing Cores
 -------------
 
 Sometimes an application needs to pause the other core on chip (i.e. it is
 writing to flash or needs to stop processing while some other event occurs).
+In most cases, however, these calls are **SHOULD NOT BE USED**.  To synchronize
+cross-core operations use normal multiprocessor methods such as circular buffers,
+global ``volatile`` flags, mutexes, and the like.  Stopping a core has massive
+implications and can kill networking and USB communications if done too long or
+too frequently.
 
 void rp2040.idleOtherCore()
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -53,7 +74,12 @@ Communicating Between Cores
 The RP2040 provides a hardware FIFO for communicating between cores, but it
 is used exclusively for the idle/resume calls described above.  Instead, please
 use the following functions to access a software-managed, multicore safe
-FIFO.
+FIFO.  There are two FIFOs, one written to by core 0 and read by core 1, and
+the other written to by core 1 and read by core 0.
+
+You can (and probably should) use shared memory (such as ``volatile`` globals)
+or other normal multiprocessor communication algorithms to transfer data or
+work between cores, but for simple tasks these FIFO routines can suffice.
 
 void rp2040.fifo.push(uint32_t)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -80,4 +106,4 @@ Reads a value from this core's FIFO and places it in dest.  Will return
 int rp2040.fifo.available()
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Returns the number of values available in this core's FIFO.
+Returns the number of values available to read in this core's FIFO.

docs/ota.rst

@@ -1,7 +1,6 @@
 OTA Updates
 ===========
 
-
 Introduction
 ------------
 
@@ -12,7 +11,7 @@ OTA may be done using:
 -  `Arduino IDE <#arduino-ide>`__
 -  `Web Browser <#web-browser>`__
 -  `HTTP Server <#http-server>`__
-- Any other method (ZModen receive over a UART port, etc.) by using the ``Updater`` object in your sketch
+- Any other method (ZModem receive over a UART port, etc.) by using the ``Updater`` object in your sketch
 
 The Arduino IDE option is intended primarily for the software development phase. The other two options would be more useful after deployment, to provide the module with application updates either manually with a web browser, or automatically using an HTTP server.
 
@@ -189,7 +188,7 @@ Uploading modules wirelessly from Arduino IDE is intended for the following typi
 
 To upload wirelessly from the IDE:
 
-1. Build a sketch starts ``WiFi`` and includes the appropriate calls to ``ArduinoOTA`` (see the examples for reference).  These include the ``ArduinoOTA.begin()`` call in ``setup()`` and periodically calling ``ArduinoOTA.handle();`` from the ``loop()``
+1. Build a sketch that starts ``WiFi`` and includes the appropriate calls to ``ArduinoOTA`` (see the examples for reference).  These include the ``ArduinoOTA.begin()`` call in ``setup()`` and periodically calling ``ArduinoOTA.handle();`` from the ``loop()``
 
 2. Upload using standard USB connection the first time.
 
@@ -212,9 +211,9 @@ Before implementing it in your sketch, it is a good idea to check how it works u
 
 Enter the password and upload should be initiated as usual with the only difference being ``Authenticating...OK`` message visible in the upload log.
 
-You will not be prompted for a reentering the same password next time. Arduino IDE will remember it for you. You will see a prompt for password only after reopening IDE, or if you change it in your sketch, upload the sketch and then try to upload it again.
+You will not be prompted for a reentering the same password next time. Arduino IDE will remember it for you. You will see a prompt for password only after reopening the IDE, or if you change it in your sketch, upload the sketch and then try to upload it again.
 
-Please note, it is possible to reveal password entered previously in Arduino IDE, if IDE has not been closed since last upload. This can be done by enabling *Show verbose output during: upload* in *File > Preferences* and attempting to upload the module.
+Please note, it is possible to reveal password entered previously in Arduino IDE, if the IDE has not been closed since last upload. This can be done by enabling *Show verbose output during: upload* in *File > Preferences* and attempting to upload the module.
 
 
 

docs/piouart.rst

@@ -15,6 +15,7 @@ To instantiate only a serial transmit or receive unit, pass in
 ``SerialPIO::NOPIN`` as the ``txpin`` or ``rxpin``.
 
 For example, to make a transmit-only port on GP16
+
 .. code:: cpp
 
         SerialPIO transmitter( 16, SerialPIO::NOPIN );
@@ -22,6 +23,12 @@ For example, to make a transmit-only port on GP16
 For detailed information about the Serial ports, see the
 Arduino `Serial Reference <https://www.arduino.cc/reference/en/language/functions/communication/serial/>`_ .
 
+Inversion
+---------
+
+``SoftwareSerial`` and ``SerialPIO`` can both support inverted input and/or outputs via the methods
+``setInvertRX(bool invert)`` and ``setInvertTX(bool invert)``.
+
 
 SoftwareSerial Emulation
 ========================
@@ -30,7 +37,6 @@ with the Arduino `Software Serial <https://docs.arduino.cc/learn/built-in-librar
 library.  Use the normal ``#include <SoftwareSerial.h>`` to include it.   The following
 differences from the Arduino standard are present:
 
-* Inverted mode is not supported
 * All ports are always listening
 * ``listen`` call is a no-op
 * ``isListening()`` always returns ``true``

docs/platformio.rst

@@ -1,401 +1,380 @@
-Using this core with PlatformIO
-===============================
-
-What is PlatformIO? 
--------------------
-
-`PlatformIO <https://platformio.org/>`__  is a free, open-source build-tool written in Python, which also integrates into VSCode code as an extension.
-
-PlatformIO significantly simplifies writing embedded software by offering a unified build system, yet being able to create project files for many different IDEs, including VSCode, Eclipse, CLion, etc. 
-Through this, PlatformIO can offer extensive features such as IntelliSense (autocomplete), debugging, unit testing etc., which not available in the standard Arduino IDE.
-
-The Arduino IDE experience:
-
-.. image:: images/the_arduinoide_experience.png
-
-The PlatformIO experience:
-
-.. image:: images/the_platformio_experience.png
-
-Refer to the general documentation at https://docs.platformio.org/.
-
-Especially useful is the `Getting started with VSCode + PlatformIO <https://docs.platformio.org/en/latest/integration/ide/vscode.html#installation>`_, `CLI reference <https://docs.platformio.org/en/latest/core/index.html>`_ and the `platformio.ini options <https://docs.platformio.org/en/latest/projectconf/index.html>`_ page.
-
-Hereafter it is assumed that you have a basic understanding of PlatformIO in regards to project creation, project file structure and building and uploading PlatformIO projects, through reading the above pages.
-
-Important steps for Windows users, before installing
-----------------------------------------------------
-
-By default, Windows has a limited path length that is not long enough to fully clone the ``Pico-SDK``'s ``tinyusb`` repository, resulting in error messages like the one below while attempting to fetch the repository.
-
-.. code::
-
-    error: unable to create file '.....' : Filename too long
-    
-To work around this requires performing two steps and rebooting Windows once.  These steps will enable longer file paths at the Windows OS and the ``git`` level.
-
-Step 1: Enabling long paths in git
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Open up a Windows ``cmd`` or ``terminal`` window and execute the following command
-
-.. code::
-
-    git config --system core.longpaths true 
-
-Step 2: Enabling long paths in the Windows OS
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-(taken from https://www.microfocus.com/documentation/filr/filr-4/filr-desktop/t47bx2ogpfz7.html)
-
-1. Click Window key and type gpedit.msc, then press the Enter key. This launches the Local Group Policy Editor.
-
-2. Navigate to Local Computer Policy > Computer Configuration > Administrative Templates > System > Filesystem.
-
-3.  Double click Enable NTFS/Win32 long paths and close the dialog.
-
-   .. image:: images/longpath.png
-
-
-Step 3: Reboot the computer
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Once the two prior stages are complete, please do a full reboot or power cycle so that the new settings will take effect.
-
-
-Current state of development
-----------------------------
-
-At the time of writing, PlatformIO integration for this core is a work-in-progress and not yet merged into mainline PlatformIO. This is subject to change once `this pull request <https://github.com/platformio/platform-raspberrypi/pull/36>`_ is merged.
-
-If you want to use the PlatformIO integration right now, make sure you first create a standard Raspberry Pi Pico + Arduino project within PlatformIO. 
-This will give you a project with the ``platformio.ini`` 
-
-.. code:: ini
-
-    [env:pico]
-    platform = raspberrypi
-    board = pico
-    framework = arduino
-
-Here, you need to change the `platform` to take advantage of the features described hereunder and switch to the new core.
-
-.. code:: ini
-
-    [env:pico]
-    platform = https://github.com/maxgerhardt/platform-raspberrypi.git
-    board = pico
-    framework = arduino
-    board_build.core = earlephilhower
-    
-When the support for this core has been merged into mainline PlatformIO, this notice will be removed and a standard `platformio.ini` as shown above will work as a base.
-
-Deprecation warnings
----------------------
-
-Previous versions of this documentation told users to inject the framework and toolchain package into the project by using
-
-.. code:: ini
-
-    ; note that download link for toolchain is specific for OS. see https://github.com/earlephilhower/pico-quick-toolchain/releases.
-    platform_packages = 
-        maxgerhardt/framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git
-        maxgerhardt/toolchain-pico@https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.arm-none-eabi-7855b0c.210706.zip
-
-This is now **deprecated** and should not be done anymore. Users should delete these ``platform_packages`` lines and update the platform integration by issuing the command
-
-.. code:: bash
-
-    pio pkg update -g -p https://github.com/maxgerhardt/platform-raspberrypi.git
-
-in the `PlatformIO CLI <https://docs.platformio.org/en/latest/integration/ide/vscode.html#platformio-core-cli>`_. The same can be achieved by using the VSCode PIO Home -> Platforms -> Updates GUI.
-
-The toolchain, which was also renamed to ``toolchain-rp2040-earlephilhower`` is downloaded automatically from the registry. The same goes for the ``framework-arduinopico`` toolchain package, which points directly to the Arduino-Pico Github repository.
-However, users can still select a custom fork or branch of the core if desired so, as detailed in a chapter below.
-
-Selecting the new core
-----------------------
-
-Prerequisite for using this core is to tell PlatformIO to switch to it.
-There will be board definition files where the Earle-Philhower core will
-be the default since it's a board that only exists in this core (and not
-the other https://github.com/arduino/ArduinoCore-mbed). To switch boards
-for which this is not the default core (which are only
-``board = pico`` and ``board = nanorp2040connect``), the directive
-
-.. code:: ini
-
-    board_build.core = earlephilhower
-
-must be added to the ``platformio.ini``. This controls the `core
-switching
-logic <https://github.com/maxgerhardt/platform-raspberrypi/blob/77e0d3a29d1dbf00fd3ec3271104e3bf4820869c/builder/frameworks/arduino/arduino.py#L27-L32>`__.
-
-When using Arduino-Pico-only boards like ``board = rpipico`` or ``board = adafruit_feather``, this is not needed.
-
-Flash size
-----------
-
-Controlled via specifying the size allocated for the filesystem.
-Available sketch size is calculated accordingly by using (as in
-``makeboards.py``) that number and the (constant) EEPROM size (4096
-bytes) and the total flash size as known to PlatformIO via the board
-definition file. The expression on the right can involve "b","k","m"
-(bytes/kilobytes/megabytes) and floating point numbers. This makes it
-actually more flexible than in the Arduino IDE where there is a finite
-list of choices. Calculations happen in `the
-platform <https://github.com/maxgerhardt/platform-raspberrypi/blob/77e0d3a29d1dbf00fd3ec3271104e3bf4820869c/builder/main.py#L118-L184>`__.
-
-.. code:: ini
-
-    ; in reference to a board = pico config (2MB flash)
-    ; Flash Size: 2MB (Sketch: 1MB, FS:1MB)
-    board_build.filesystem_size = 1m
-    ; Flash Size: 2MB (No FS)
-    board_build.filesystem_size = 0m
-    ; Flash Size: 2MB (Sketch: 0.5MB, FS:1.5MB)
-    board_build.filesystem_size = 1.5m
-
-CPU Speed
----------
-
-As for all other PlatformIO platforms, the ``f_cpu`` macro value (which
-is passed to the core) can be changed as
-`documented <https://docs.platformio.org/en/latest/boards/raspberrypi/pico.html#configuration>`__
-
-.. code:: ini
-
-    ; 133MHz
-    board_build.f_cpu = 133000000L
-
-Debug Port
-----------
-
-Via
-`build_flags <https://docs.platformio.org/en/latest/projectconf/section_env_build.html#build-flags>`__
-as done for many other cores
-(`example <https://docs.platformio.org/en/latest/platforms/ststm32.html#configuration>`__).
-
-.. code:: ini
-
-    ; Debug Port: Serial
-    build_flags = -DDEBUG_RP2040_PORT=Serial
-    ; Debug Port: Serial 1
-    build_flags = -DDEBUG_RP2040_PORT=Serial1
-    ; Debug Port: Serial 2
-    build_flags = -DDEBUG_RP2040_PORT=Serial2
-
-Debug Level
------------
-
-Done again by directly adding the needed `build
-flags <https://github.com/earlephilhower/arduino-pico/blob/05356da2c5552413a442f742e209c6fa92823666/boards.txt#L104-L114>`__.
-When wanting to define multiple build flags, they must be accumulated in
-either a sing line or a newline-separated expression.
-
-.. code:: ini
-
-    ; Debug level: Core
-    build_flags = -DDEBUG_RP2040_CORE
-    ; Debug level: SPI
-    build_flags = -DDEBUG_RP2040_SPI
-    ; Debug level: Wire
-    build_flags = -DDEBUG_RP2040_WIRE
-    ; Debug level: All
-    build_flags = -DDEBUG_RP2040_WIRE -DDEBUG_RP2040_SPI -DDEBUG_RP2040_CORE
-    ; Debug level: NDEBUG
-    build_flags = -DNDEBUG
-
-    ; example: Debug port on serial 2 and all debug output
-    build_flags = -DDEBUG_RP2040_WIRE -DDEBUG_RP2040_SPI -DDEBUG_RP2040_CORE -DDEBUG_RP2040_PORT=Serial2
-    ; equivalent to above
-    build_flags = 
-       -DDEBUG_RP2040_WIRE
-       -DDEBUG_RP2040_SPI
-       -DDEBUG_RP2040_CORE
-       -DDEBUG_RP2040_PORT=Serial2
-
-C++ Exceptions
---------------
-
-Exceptions are disabled by default. To enable them, use
-
-.. code:: ini
-
-    ; Enable Exceptions
-    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_EXCEPTIONS
-
-Stack Protector
----------------
-
-To enable GCC's stack protection feature, use
-
-.. code:: ini
-
-    ; Enable Stack Protector
-    build_flags = -fstack-protector
-
-
-RTTI
-----
-
-RTTI (run-time type information) is disabled by default. To enable it, use
-
-.. code:: ini
-
-    ; Enable RTTI
-    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_RTTI
-
-USB Stack
----------
-
-Not specifying any special build flags regarding this gives one the
-default Pico SDK USB stack. To change it, add
-
-.. code:: ini
-
-    ; Adafruit TinyUSB
-    build_flags = -DUSE_TINYUSB
-    ; No USB stack
-    build_flags = -DPIO_FRAMEWORK_ARDUINO_NO_USB
-
-Note that the special "No USB" setting is also supported, through the
-shortcut-define ``PIO_FRAMEWORK_ARDUINO_NO_USB``.
-
-IP Stack
----------
-
-The lwIP stack can be configured to support only IPv4 (default) or additionally IPv6. To activate IPv6 support, add 
-
-.. code:: ini
-
-    ; IPv6
-    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_IPV6
-
-to the ``platformio.ini``.
-
-Bluetooth Stack
----------------
-
-The Bluetooth Classic (BTC) and Bluetooth Low Energy (BLE) stack can be activated by adding
-
-.. code:: ini
-
-    ; BTC and BLE
-    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_BLUETOOTH
-
-to the ``platformio.ini``.
-
-Selecting a different core version
-----------------------------------
-
-If you wish to use a different version of the core, e.g., the latest git
-``master`` version, you can use a
-`platform_packages <https://docs.platformio.org/en/latest/projectconf/section_env_platform.html#platform-packages>`__
-directive to do so. Simply specify that the framework package
-(``framework-arduinopico``) comes from a different source.
-
-.. code:: ini
-
-    platform_packages =
-       framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git#master
-
-Whereas the ``#master`` can also be replaced by a ``#branchname`` or a
-``#commithash``. If left out, it will pull the default branch, which is ``master``.
-
-The ``file://`` and ``symlink://`` pseudo-protocols can also be used instead of ``https://`` to point to a
-local copy of the core (with e.g. some modifications) on disk (`see documentation <https://docs.platformio.org/en/latest/core/userguide/pkg/cmd_install.html?#local-folder>`_).
-
-Note that this can only be done for versions that have the PlatformIO
-builder script it in, so versions before 1.9.2 are not supported.
-
-Examples 
---------
-
-The following example ``platformio.ini`` can be used for a Raspberry Pi Pico
-and 0.5MByte filesystem. 
-
-.. code:: ini
-
-    [env:pico]
-    platform = https://github.com/maxgerhardt/platform-raspberrypi.git
-    board = pico
-    framework = arduino
-    ; board can use both Arduino cores -- we select Arduino-Pico here
-    board_build.core = earlephilhower
-    board_build.filesystem_size = 0.5m
-
-
-The initial project structure should be generated just creating a new
-project for the Pico and the Arduino framework, after which the
-auto-generated ``platformio.ini`` can be adapted per above.
-
-Debugging
----------
-
-With recent updates to the toolchain and OpenOCD, debugging firmwares is also possible.
-
-To specify the debugging adapter, use ``debug_tool`` (`documentation <https://docs.platformio.org/en/latest/projectconf/section_env_debug.html#debug-tool>`_). Supported values are:
-
-* ``picoprobe``
-* ``cmsis-dap``
-* ``jlink``
-* ``raspberrypi-swd``
-* ``blackmagic``
-* ``pico-debug``
-
-These values can also be used in ``upload_protocol`` if you want PlatformIO to upload the regular firmware through this method, which you likely want.
-
-Especially the PicoProbe method is convenient when you have two Raspberry Pi Pico boards. One of them can be flashed with the PicoProbe firmware (`documentation <https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html#debugging-using-another-raspberry-pi-pico>`__) and is then connected to the target Raspberry Pi Pico board (see `documentation <https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf>`__ chapter "Picoprobe Wiring"). Remember that on Windows, you have to use `Zadig <https://zadig.akeo.ie/>`_ to also load "WinUSB" drivers for the "Picoprobe (Interface 2)" device so that OpenOCD can speak to it.
-
-.. note::
-    Newer PicoProbe firmware versions have dropped the proprietary "PicoProbe" USB communication protocol and emulate a **CMSIS-DAP** instead. Meaning, you have to use ``debug_tool = cmsis-dap`` for these newer firmwares, such as those obtained from `raspberrypi/picoprobe <https://github.com/raspberrypi/picoprobe/releases>`__
-
-With that set up, debugging can be started via the left debugging sidebar and works nicely: Setup breakpoints, inspect the value of variables in the code, step through the code line by line. When a breakpoint is hit or execution is halted, you can even see the execution state both Cortex-M0+ cores of the RP2040.
-
-.. image:: images/pio_debugging.png
-
-For further information on customizing debug options, like the initial breakpoint or debugging / SWD speed, consult `the documentation <https://docs.platformio.org/en/latest/projectconf/section_env_debug.html>`_.
-
-.. note:: 
-    For the BlackMagicProbe debugging probe (as can be e.g., created by simply flashing a STM32F103C8 "Bluepill" board), you currently have to use the branch ``fix/rp2040-flash-reliability`` (or at least commit ``1d001bc``) **and** use the `official ARM provided toolchain <https://github.com/blackmagic-debug/blackmagic/issues/1364#issuecomment-1503393266>`_.
-
-    You can obtain precompiled binaries from `here <https://github.com/blackmagic-debug/blackmagic/issues/1364#issuecomment-1503372723>`__. A flashing guide is available `here <https://primalcortex.wordpress.com/2017/06/13/building-a-black-magic-debug-probe/>`__. You then have to configure the target serial port ("GDB port") in your project per `documentation <https://docs.platformio.org/en/latest/plus/debug-tools/blackmagic.html#debugging-tool-blackmagic>`__.
-
-.. note:: 
-    For the pico-debug (`download <https://github.com/majbthrd/pico-debug/releases>`__) debugging way, *which needs to no additional debug probe*, add this snippet to your ``platformio.ini`` and follow the given procedure:
-
-    .. code:: ini
-
-        upload_protocol = pico-debug
-        debug_tool = pico-debug
-        build_flags = -DPIO_FRAMEWORK_ARDUINO_NO_USB
-
-    1. Build your firmware normally
-    2. Plug in the Pico in BOOTSEL mode
-    3. Drag and drop your ``.pio/build/<env>/firmware.uf2`` onto the boot drive
-    4. Unplug and replug your Pico back into BOOTSEL mode for the second time
-    5. Drag and drop the downloaded ``pico-debug-gimmecache.uf2`` file onto the boot drive
-    6. A CMSIS-DAP device should now appear on your computer
-    7. Start debugging via the debug sidebar as normal
-
-    Note the restrictions: The second core cannot be used, the USB port cannot be used (no USB serial, only UART serial), 16KB less RAM is available.
-
-Filesystem Uploading
---------------------
-
-For the Arduino IDE, `a plugin <https://github.com/earlephilhower/arduino-pico#uploading-filesystem-images>`_ is available that enables a data folder to be packed as a LittleFS filesystem binary and uploaded to the Pico.
-
-This functionality is also built-in in the PlatformIO integration. Open the `project tasks <https://docs.platformio.org/en/latest/integration/ide/vscode.html#project-tasks>`_ and expand the "Platform" tasks: 
-
-.. image:: images/pio_fs_upload.png
-
-The files you want to upload should be placed in a folder called ``data`` inside the project. This can be customized `if needed <https://docs.platformio.org/en/latest/projectconf/section_platformio.html#data-dir>`_.
-
-The task "Build Filesystem Image" will take all files in the data directory and create a ``littlefs.bin`` file from it using the ``mklittlefs`` tool.
-
-The task "Upload Filesystem Image" will upload the filesystem image to the Pico via the specified ``upload_protocol``. 
-
-.. note:: 
-    Set the space available for the filesystem in the ``platformio.ini`` using e.g., ``board_build.filesystem_size = 0.5m``, or filesystem
-    creation will fail!
+Using this core with PlatformIO
+===============================
+
+What is PlatformIO?
+-------------------
+
+`PlatformIO <https://platformio.org/>`__  is a free, open-source build-tool written in Python, which also integrates into VSCode code as an extension.
+
+PlatformIO significantly simplifies writing embedded software by offering a unified build system, yet being able to create project files for many different IDEs, including VSCode, Eclipse, CLion, etc.
+Through this, PlatformIO can offer extensive features such as IntelliSense (autocomplete), debugging, unit testing etc., which not available in the standard Arduino IDE.
+
+The Arduino IDE experience:
+
+.. image:: images/the_arduinoide_experience.png
+
+The PlatformIO experience:
+
+.. image:: images/the_platformio_experience.png
+
+Refer to the general documentation at https://docs.platformio.org/.
+
+Especially useful is the `Getting started with VSCode + PlatformIO <https://docs.platformio.org/en/latest/integration/ide/vscode.html#installation>`_, `CLI reference <https://docs.platformio.org/en/latest/core/index.html>`_ and the `platformio.ini options <https://docs.platformio.org/en/latest/projectconf/index.html>`_ page.
+
+Hereafter it is assumed that you have a basic understanding of PlatformIO in regards to project creation, project file structure and building and uploading PlatformIO projects, through reading the above pages.
+
+Important steps for Windows users, before installing
+----------------------------------------------------
+
+By default, Windows has a limited path length that is not long enough to fully clone the ``Pico-SDK``'s ``tinyusb`` repository, resulting in error messages like the one below while attempting to fetch the repository.
+
+.. code::
+
+    error: unable to create file '.....' : Filename too long
+
+To work around this requires performing two steps and rebooting Windows once.  These steps will enable longer file paths at the Windows OS and the ``git`` level.
+
+Step 1: Enabling long paths in git
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Open up a Windows ``cmd`` or ``terminal`` window and execute the following command
+
+.. code::
+
+    git config --system core.longpaths true
+
+Step 2: Enabling long paths in the Windows OS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+(taken from https://www.microfocus.com/documentation/filr/filr-4/filr-desktop/t47bx2ogpfz7.html)
+
+1. Click Window key and type gpedit.msc, then press the Enter key. This launches the Local Group Policy Editor.
+
+2. Navigate to Local Computer Policy > Computer Configuration > Administrative Templates > System > Filesystem.
+
+3.  Double click Enable NTFS/Win32 long paths and close the dialog.
+
+   .. image:: images/longpath.png
+
+
+Step 3: Reboot the computer
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Once the two prior stages are complete, please do a full reboot or power cycle so that the new settings will take effect.
+
+
+Current state of development
+----------------------------
+
+At the time of writing, PlatformIO integration for this core is a work-in-progress and not yet merged into mainline PlatformIO. This is subject to change once `this pull request <https://github.com/platformio/platform-raspberrypi/pull/36>`_ is merged.
+
+If you want to use the PlatformIO integration right now, make sure you first create a standard Raspberry Pi Pico + Arduino project within PlatformIO.
+This will give you a project with the ``platformio.ini``
+
+.. code:: ini
+
+    [env:pico]
+    platform = raspberrypi
+    board = pico
+    framework = arduino
+
+Here, you need to change the `platform` to take advantage of the features described hereunder and switch to the new core.
+
+.. code:: ini
+
+    [env:pico]
+    platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+    board = pico
+    framework = arduino
+    board_build.core = earlephilhower
+
+When the support for this core has been merged into mainline PlatformIO, this notice will be removed and a standard `platformio.ini` as shown above will work as a base.
+
+Deprecation warnings
+---------------------
+
+Previous versions of this documentation told users to inject the framework and toolchain package into the project by using
+
+.. code:: ini
+
+    ; note that download link for toolchain is specific for OS. see https://github.com/earlephilhower/pico-quick-toolchain/releases.
+    platform_packages =
+        maxgerhardt/framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git
+        maxgerhardt/toolchain-pico@https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.arm-none-eabi-7855b0c.210706.zip
+
+This is now **deprecated** and should not be done anymore. Users should delete these ``platform_packages`` lines and update the platform integration by issuing the command
+
+.. code:: bash
+
+    pio pkg update -g -p https://github.com/maxgerhardt/platform-raspberrypi.git
+
+in the `PlatformIO CLI <https://docs.platformio.org/en/latest/integration/ide/vscode.html#platformio-core-cli>`_. The same can be achieved by using the VSCode PIO Home -> Platforms -> Updates GUI.
+
+The toolchain, which was also renamed to ``toolchain-rp2040-earlephilhower`` is downloaded automatically from the registry. The same goes for the ``framework-arduinopico`` toolchain package, which points directly to the Arduino-Pico Github repository.
+However, users can still select a custom fork or branch of the core if desired so, as detailed in a chapter below.
+
+Selecting the new core
+----------------------
+
+Prerequisite for using this core is to tell PlatformIO to switch to it.
+There will be board definition files where the Earle-Philhower core will
+be the default since it's a board that only exists in this core (and not
+the other https://github.com/arduino/ArduinoCore-mbed). To switch boards
+for which this is not the default core (which are only
+``board = pico`` and ``board = nanorp2040connect``), the directive
+
+.. code:: ini
+
+    board_build.core = earlephilhower
+
+must be added to the ``platformio.ini``. This controls the `core
+switching
+logic <https://github.com/maxgerhardt/platform-raspberrypi/blob/77e0d3a29d1dbf00fd3ec3271104e3bf4820869c/builder/frameworks/arduino/arduino.py#L27-L32>`__.
+
+When using Arduino-Pico-only boards like ``board = rpipico`` or ``board = adafruit_feather``, this is not needed.
+
+Flash size
+----------
+
+Controlled via specifying the size allocated for the filesystem.
+Available sketch size is calculated accordingly by using (as in
+``makeboards.py``) that number and the (constant) EEPROM size (4096
+bytes) and the total flash size as known to PlatformIO via the board
+definition file. The expression on the right can involve "b","k","m"
+(bytes/kilobytes/megabytes) and floating point numbers. This makes it
+actually more flexible than in the Arduino IDE where there is a finite
+list of choices. Calculations happen in `the
+platform <https://github.com/maxgerhardt/platform-raspberrypi/blob/77e0d3a29d1dbf00fd3ec3271104e3bf4820869c/builder/main.py#L118-L184>`__.
+
+.. code:: ini
+
+    ; in reference to a board = pico config (2MB flash)
+    ; Flash Size: 2MB (Sketch: 1MB, FS:1MB)
+    board_build.filesystem_size = 1m
+    ; Flash Size: 2MB (No FS)
+    board_build.filesystem_size = 0m
+    ; Flash Size: 2MB (Sketch: 0.5MB, FS:1.5MB)
+    board_build.filesystem_size = 1.5m
+
+CPU Speed
+---------
+
+As for all other PlatformIO platforms, the ``f_cpu`` macro value (which
+is passed to the core) can be changed as
+`documented <https://docs.platformio.org/en/latest/boards/raspberrypi/pico.html#configuration>`__
+
+.. code:: ini
+
+    ; 133MHz
+    board_build.f_cpu = 133000000L
+
+Debug Port
+----------
+
+Via
+`build_flags <https://docs.platformio.org/en/latest/projectconf/section_env_build.html#build-flags>`__
+as done for many other cores
+(`example <https://docs.platformio.org/en/latest/platforms/ststm32.html#configuration>`__).
+
+.. code:: ini
+
+    ; Debug Port: Serial
+    build_flags = -DDEBUG_RP2040_PORT=Serial
+    ; Debug Port: Serial 1
+    build_flags = -DDEBUG_RP2040_PORT=Serial1
+    ; Debug Port: Serial 2
+    build_flags = -DDEBUG_RP2040_PORT=Serial2
+
+Debug Level
+-----------
+
+Done again by directly adding the needed `build
+flags <https://github.com/earlephilhower/arduino-pico/blob/05356da2c5552413a442f742e209c6fa92823666/boards.txt#L104-L114>`__.
+When wanting to define multiple build flags, they must be accumulated in
+either a single line or a newline-separated expression.
+
+.. code:: ini
+
+    ; Debug level: Core
+    build_flags = -DDEBUG_RP2040_CORE
+    ; Debug level: SPI
+    build_flags = -DDEBUG_RP2040_SPI
+    ; Debug level: Wire
+    build_flags = -DDEBUG_RP2040_WIRE
+    ; Debug level: All
+    build_flags = -DDEBUG_RP2040_WIRE -DDEBUG_RP2040_SPI -DDEBUG_RP2040_CORE
+    ; Debug level: NDEBUG
+    build_flags = -DNDEBUG
+
+    ; example: Debug port on serial 2 and all debug output
+    build_flags = -DDEBUG_RP2040_WIRE -DDEBUG_RP2040_SPI -DDEBUG_RP2040_CORE -DDEBUG_RP2040_PORT=Serial2
+    ; equivalent to above
+    build_flags =
+       -DDEBUG_RP2040_WIRE
+       -DDEBUG_RP2040_SPI
+       -DDEBUG_RP2040_CORE
+       -DDEBUG_RP2040_PORT=Serial2
+
+C++ Exceptions
+--------------
+
+Exceptions are disabled by default. To enable them, use
+
+.. code:: ini
+
+    ; Enable Exceptions
+    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_EXCEPTIONS
+
+Stack Protector
+---------------
+
+To enable GCC's stack protection feature, use
+
+.. code:: ini
+
+    ; Enable Stack Protector
+    build_flags = -fstack-protector
+
+
+RTTI
+----
+
+RTTI (run-time type information) is disabled by default. To enable it, use
+
+.. code:: ini
+
+    ; Enable RTTI
+    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_RTTI
+
+USB Stack
+---------
+
+Not specifying any special build flags regarding this gives one the
+default Pico SDK USB stack. To change it, add
+
+.. code:: ini
+
+    ; Adafruit TinyUSB
+    build_flags = -DUSE_TINYUSB
+    ; No USB stack
+    build_flags = -DPIO_FRAMEWORK_ARDUINO_NO_USB
+
+Note that the special "No USB" setting is also supported, through the
+shortcut-define ``PIO_FRAMEWORK_ARDUINO_NO_USB``.
+
+IP Stack
+--------
+
+The lwIP stack can be configured to support only IPv4 (default) or additionally IPv6. To activate IPv6 support, add
+
+.. code:: ini
+
+    ; IPv6
+    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_IPV6
+
+to the ``platformio.ini``.
+
+Bluetooth Stack
+---------------
+
+The Bluetooth Classic (BTC) and Bluetooth Low Energy (BLE) stack can be activated by adding
+
+.. code:: ini
+
+    ; BTC and BLE
+    build_flags = -DPIO_FRAMEWORK_ARDUINO_ENABLE_BLUETOOTH
+
+to the ``platformio.ini``.
+
+Selecting a different core version
+----------------------------------
+
+If you wish to use a different version of the core, e.g., the latest git
+``master`` version, you can use a
+`platform_packages <https://docs.platformio.org/en/latest/projectconf/section_env_platform.html#platform-packages>`__
+directive to do so. Simply specify that the framework package
+(``framework-arduinopico``) comes from a different source.
+
+.. code:: ini
+
+    platform_packages =
+       framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git#master
+
+Whereas the ``#master`` can also be replaced by a ``#branchname`` or a
+``#commithash``. If left out, it will pull the default branch, which is ``master``.
+
+The ``file://`` and ``symlink://`` pseudo-protocols can also be used instead of ``https://`` to point to a
+local copy of the core (with e.g. some modifications) on disk (`see documentation <https://docs.platformio.org/en/latest/core/userguide/pkg/cmd_install.html?#local-folder>`_).
+
+Note that this can only be done for versions that have the PlatformIO
+builder script it in, so versions before 1.9.2 are not supported.
+
+Examples
+--------
+
+The following example ``platformio.ini`` can be used for a Raspberry Pi Pico
+and 0.5MByte filesystem.
+
+.. code:: ini
+
+    [env:pico]
+    platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+    board = pico
+    framework = arduino
+    ; board can use both Arduino cores -- we select Arduino-Pico here
+    board_build.core = earlephilhower
+    board_build.filesystem_size = 0.5m
+
+
+The initial project structure should be generated just creating a new
+project for the Pico and the Arduino framework, after which the
+auto-generated ``platformio.ini`` can be adapted per above.
+
+Debugging
+---------
+
+With recent updates to the toolchain and OpenOCD, debugging firmwares is also possible.
+
+To specify the debugging adapter, use ``debug_tool`` (`documentation <https://docs.platformio.org/en/latest/projectconf/section_env_debug.html#debug-tool>`_). Supported values are:
+
+* ``picoprobe``
+* ``cmsis-dap``
+* ``jlink``
+* ``raspberrypi-swd``
+* ``blackmagic``
+
+These values can also be used in ``upload_protocol`` if you want PlatformIO to upload the regular firmware through this method, which you likely want.
+
+Especially the PicoProbe method is convenient when you have two Raspberry Pi Pico boards. One of them can be flashed with the PicoProbe firmware (`documentation <https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html#debugging-using-another-raspberry-pi-pico>`__) and is then connected to the target Raspberry Pi Pico board (see `documentation <https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf>`__ chapter "Picoprobe Wiring"). Remember that on Windows, you have to use `Zadig <https://zadig.akeo.ie/>`_ to also load "WinUSB" drivers for the "Picoprobe (Interface 2)" device so that OpenOCD can speak to it.
+
+.. note::
+    Newer PicoProbe firmware versions have dropped the proprietary "PicoProbe" USB communication protocol and emulate a **CMSIS-DAP** instead. Meaning, you have to use ``debug_tool = cmsis-dap`` for these newer firmwares, such as those obtained from `raspberrypi/picoprobe <https://github.com/raspberrypi/picoprobe/releases>`__
+
+With that set up, debugging can be started via the left debugging sidebar and works nicely: Setup breakpoints, inspect the value of variables in the code, step through the code line by line. When a breakpoint is hit or execution is halted, you can even see the execution state both Cortex-M0+ cores of the RP2040.
+
+.. image:: images/pio_debugging.png
+
+For further information on customizing debug options, like the initial breakpoint or debugging / SWD speed, consult `the documentation <https://docs.platformio.org/en/latest/projectconf/section_env_debug.html>`_.
+
+.. note::
+    For the BlackMagicProbe debugging probe (as can be e.g., created by simply flashing a STM32F103C8 "Bluepill" board), you currently have to use the branch ``fix/rp2040-flash-reliability`` (or at least commit ``1d001bc``) **and** use the `official ARM provided toolchain <https://github.com/blackmagic-debug/blackmagic/issues/1364#issuecomment-1503393266>`_.
+
+    You can obtain precompiled binaries from `here <https://github.com/blackmagic-debug/blackmagic/issues/1364#issuecomment-1503372723>`__. A flashing guide is available `here <https://primalcortex.wordpress.com/2017/06/13/building-a-black-magic-debug-probe/>`__. You then have to configure the target serial port ("GDB port") in your project per `documentation <https://docs.platformio.org/en/latest/plus/debug-tools/blackmagic.html#debugging-tool-blackmagic>`__.
+
+Filesystem Uploading
+--------------------
+
+For the Arduino IDE, `a plugin <https://github.com/earlephilhower/arduino-pico#uploading-filesystem-images>`_ is available that enables a data folder to be packed as a LittleFS filesystem binary and uploaded to the Pico.
+
+This functionality is also built-in in the PlatformIO integration. Open the `project tasks <https://docs.platformio.org/en/latest/integration/ide/vscode.html#project-tasks>`_ and expand the "Platform" tasks:
+
+.. image:: images/pio_fs_upload.png
+
+The files you want to upload should be placed in a folder called ``data`` inside the project. This can be customized `if needed <https://docs.platformio.org/en/latest/projectconf/section_platformio.html#data-dir>`_.
+
+The task "Build Filesystem Image" will take all files in the data directory and create a ``littlefs.bin`` file from it using the ``mklittlefs`` tool.
+
+The task "Upload Filesystem Image" will upload the filesystem image to the Pico via the specified ``upload_protocol``.
+
+.. note::
+    Set the space available for the filesystem in the ``platformio.ini`` using e.g., ``board_build.filesystem_size = 0.5m``, or filesystem creation will fail!

docs/psram.rst

@@ -0,0 +1,118 @@
+RP2350 PSRAM Support
+====================
+
+The RP2350 chip in the Raspberry Pi Pico 2, and other RP2350 boards,
+supports an external interface to PSRAM.  When a PSRAM chip is attached
+to the processor (please note that there is none on the Pico 2 board, but
+iLabs and SparkFun boards, among others, do have it), up to 16 megabytes
+of additional memory can be used by the chip.
+
+While this external RAM is slower than the built-in SRAM, it is still
+able to be used in any place where normal RAM would be used (other than
+for memory-mapped functions and statically initialized variables).
+
+When present, PSRAM can be used in two ways: for specific instantiated
+variables, or through a ``malloc``-like access method.  Both can be used
+in any single application.
+
+Using PSRAM for regular variables
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Similar to ``PROGMEM`` in the original Arduino AVR devices, the variable
+decorator ``PSRAM`` can be added to map a variable into PSRAM.  Simply add
+``PSRAM`` to an array and it will be mapped into PSRAM:
+
+.. code:: cpp
+
+    ...
+    float weights[4000] PSRAM;  // Place an array of 4000 floats in PSRAM
+    char samplefile[1'000'000] PSRAM; // Allocate 1M for WAV samples in PSRAM
+    ...
+
+These variables can be used just like normal ones, no special handling is
+required.  For example:
+
+.. code:: cpp
+
+    char buff[4 *1024 * 1024];   // 4MB array
+
+    void initBuff() {
+        bzero(buff, sizeof(buff));
+        for (int i = 0; i < 4 *1024 * 1024; i += 4096) {
+            buff[i] = rand();
+        }
+    }
+
+The only restriction is that these variables may not be initialized statically.
+The following example will **NOT** work:
+
+.. code:: cpp
+
+    char buff[] = "This is illegal and will not function";
+
+Using PSRAM for dynamic allocations
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+PSRAM can also be used as a heap for dynamica allocations using ``pmalloc`` and
+``pcalloc``.  These calls function exactly like normal ``malloc`` and ``calloc``
+except they allocate space from PSRAM.
+
+Simply replace a ``malloc`` or ``calloc`` with ``pmalloc`` or ``pcalloc`` to use
+the PSRAM heap.  Other calls, such as ``free`` and ``realloc`` "just work" and do
+not need to be modified (they check where the passed-in pointer resides and
+do the right thing automatically).
+
+For example, to create and modify large buffer in PSRAM:
+
+.. code:: cpp
+
+    void ex() {
+        int *buff;
+        // Ignoring OOM error conditions in example for brevity
+        buff = (int *)pmalloc(10000 * sizeof(*buff));
+        // Something happened and we need more space, so...
+        buff = (int *)realloc(buff, 20000 * sizeof(*buff)); // buff now has 20K elements
+        for (int i = 0; i < 20000; i++) {
+            buff[i] = i;
+        }
+        // Do some work, now we're done
+        free(buff);
+    }
+
+C++ objects can be allocated in PSRAM using "placement new" constructors.  Note that
+this will only place immediate object data in PSRAM: if the object creates any other
+objects via ``new`` *those* objects will be placed in normal RAM unless the object
+also uses placement new constructors.
+
+
+
+Checking on PSRAM space
+~~~~~~~~~~~~~~~~~~~~~~~
+
+The ``rp2040`` helper object has the following calls to return the state of the
+PSRAM heap with the following calls, similar to the normal RAM heap:
+
+int rp2040.getPSRAMSize()
+-------------------------
+
+Return the total size of the attached PSRAM chip.  This is the **RAW** space and
+does not take into account any allocations for static variables or dynamic
+allocations.  (i.e. it will return 1, 2, 4, 8, or 16MV depending on the chip).
+
+int rp2040.getTotalPSRAMHeap()
+------------------------------
+
+Returns the total PSRAM heap (free and used) available or used for ``pmalloc``
+allocations.
+
+int rp2040.getUsedPSRAMHeap()
+-----------------------------
+
+Returns the total used bytes (including any overhead) of the PSRAM heap.
+
+int getFreePSRAMHeap()
+----------------------
+
+Returns the total free bytes in the PSRAM heap.  (Note that this may include
+multiple non-contiguous chunks, so this is not always the maximum block size
+that can be allocated.)

docs/rp2040.rst

@@ -81,8 +81,8 @@ overhead).
 Hardware Identification
 -----------------------
 
-bool isPicoW()
-~~~~~~~~~~~~~~
+bool rp2040.isPicoW()
+~~~~~~~~~~~~~~~~~~~~~
 Returns the core's best guess if this code is running on a Raspberry Pi Pico W.
 This would let you, possibly, use the same UF2 for Pico and PicoW by simply not
 doing any WiFi calls.
@@ -99,3 +99,13 @@ bootloader.
 void rp2040.rebootToBootloader()
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Will reboot the RP2040 into USB UF2 upload mode.
+
+DMA-based MEMCPY
+----------------
+The onboard DMA engines can copy 4-byte aligned quantities faster than the CPU.
+
+void \*rp2040.memcpyDMA(void \*dest, const void \*src, size_t count);
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Uses a DMA engine to transfer data from src to dest in 4-byte chunks without CPU
+intervention.  If any arguments are not 4-byte aligned, or if the count is not a
+multiple of 4, then it will fall back to CPU-managed memcpy.

docs/rp2350.rst

@@ -0,0 +1,27 @@
+RP2350 Specific Notes
+=====================
+
+The RP2350 chip (present on the Raspberry Pi Pico 2 board and many others)
+is supported by the core with some minor caveats:
+
+* PSRAM is supported via a new ``pmalloc`` call and ``PSRAM`` variable decorator.
+* Both RP2350A and RP2350B (48 GPIOs) are supported.
+* Only ARM mode is available.  For RISC-V (Hazard3), please use the raw SDK.
+
+P2350-E9 Errata ("Increased leakage current on Bank 0 GPIO when pad input is enabled")
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Like all chips, the RP2350-A2 stepping has post-silicon chip errata covering certain
+bugs found after the chip was manufactured.  Probably the most (in)famous and concerning
+is RP2350-E9 which is noted as resulting in "Increased leakage current on Bank 0 GPIO
+when pad input is enabled."  At a high level, this means that in some cases when an
+input pin is being driven by a weak (high impedance) input, it may not read properly.
+
+After discussion with the community and exploration of the issue by many users, this
+core has decided not to implement any forced workarounds for this issue.  Given the
+physical nature of the problem and how no one specific solution is appropriate for
+all conditions.
+
+For more information please read the errata yourself and check the Raspberry Pi Forums
+for the latest updates.
+