Update version

Add SparkFun Thing Plus RP2040 (#540 )
Add Seeed XAIO RP2040 support (#538 )
2022-04-17 14:40:27 -07:00 · 2022-04-17 14:39:28 -07:00 · 2022-04-16 10:52:06 -07:00 · 2022-04-10 13:33:19 -07:00 · 2022-04-09 11:27:01 -07:00 · 2022-03-30 14:12:24 -07:00
148 changed files with 16303 additions and 960 deletions
@@ -20,7 +20,7 @@ jobs:
    - name: Run codespell
      uses: codespell-project/actions-codespell@master
      with:
-        skip: ./pico-extras,./ArduinoCore-API,./libraries/SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api
+        skip: ./pico-extras,./ArduinoCore-API,./libraries/ESP8266SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api
        ignore_words_list: ser,DOUT

 # Consistent style
@@ -36,7 +36,9 @@ jobs:
        ./tests/ci/pkgrefs_test.sh
    - name: Check boards.txt was not edited after makeboards.py
      run: |
-        ./tools/makeboards.py > boards.txt
+        ./tools/makeboards.py
+        # If anything changed, GIT should return an error and fail the test
+        git diff --exit-code
    - name: Run astyle on all code/examples
      run: |
        sudo apt update
@@ -44,10 +46,10 @@ jobs:
        ./tests/restyle.sh
        # If anything changed, GIT should return an error and fail the test
        git diff --exit-code
-    - name: Check Arduino API copy is clean
-      run: |
-        git submodule update --init ./ArduinoCore-API
-        diff -r ./cores/rp2040/api ./ArduinoCore-API/api
+#    - name: Check Arduino API copy is clean
+#      run: |
+#        git submodule update --init ./ArduinoCore-API
+#        diff -r ./cores/rp2040/api ./ArduinoCore-API/api

 # Build all examples on linux (core and Arduino IDE)
  build-linux:
@@ -11,7 +11,7 @@
 	path = libraries/LittleFS/lib/littlefs
 	url = https://github.com/littlefs-project/littlefs.git
 [submodule "libraries/SdFat"]
-	path = libraries/SdFat
+	path = libraries/ESP8266SdFat
 	url = https://github.com/earlephilhower/ESP8266SdFat.git
 [submodule "pico-extras"]
 	path = pico-extras
@@ -13,11 +13,28 @@ See https://arduino-pico.readthedocs.io/en/latest/ along with the examples for m
 * Raspberry Pi Pico
 * Adafruit Feather RP2040
 * Adafruit ItsyBitsy RP2040
+* Adafruit KB2040
 * Adafruit Macropad RP2040
 * Adafruit QTPy RP2040
 * Adafruit STEMMA Friend RP2040
 * Adafruit Trinkey RP2040 QT
+* Arduino Nano RP2040 Connect
+* Cytron Maker Pi RP2040
+* Cytron Maker Nano RP2040
+* DeRuiLab FlyBoard2040 Core
+* DFRobot Beetle RP2040
+* Invector Labs Challenger RP2040 WiFi
+* Invector Labs Challenger NB RP2040 WiFi
+* Invector Labs Challenger RP2040 LTE
+* Invector Labs Challenger RP2040 LoRa
+* Invector Labs RPICO32
+* Melopero Shake RP2040
+* Seeed XIAO RP2040
+* Solder Party RP2040 Stamp
 * SparkFun ProMicro RP2040
+* SparkFun Thing Plus RP2040
+* uPesy RP2040 DevKit
+* WIZnet W5100S-EVB-Pico
 * Generic (configurable flash, I/O pins)

 # Installing via Arduino Boards Manager
@@ -68,7 +85,7 @@ If you follow Les' step-by-step you will also have a fully functional `CMake`-ba
 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.

-After the first upload, this should not be necessary as the `arduino-pico` core has auto-reset support. 
+After the first upload, this should not be necessary as the `arduino-pico` core has auto-reset support.
 Select the appropriate serial port shown in the Arduino Tools->Port->Serial Port menu once (this setting will stick and does not need to be
 touched for multiple uploads).   This selection allows the auto-reset tool to identify the proper device to reset.
 Them hit the upload button and your sketch should upload and run.
@@ -80,8 +97,8 @@ follow the initial procedure of holding the BOOTSEL button down while plugging i
 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

-To install, follow the directions in 
-* https://github.com/earlephilhower/arduino-pico-littlefs-plugin/blob/master/README.md 
+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
@@ -101,8 +118,25 @@ 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.

-# 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.
+# 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)
@@ -112,12 +146,13 @@ The installed tools include a version of OpenOCD (in the pqt-openocd directory)
 * Overclocking and underclocking from the menus
 * digitalWrite/Read, shiftIn/Out, tone, analogWrite(PWM)/Read, temperature
 * Peripherals:  SPI master, Wire(I2C) master/slave, dual UART, emulated EEPROM, I2S audio output, Servo
-* printf (i.e. debug) output over USB serial 
+* printf (i.e. debug) output over USB serial

 The RP2040 PIO state machines (SMs) are used to generate jitter-free:
 * Servos
 * Tones
 * I2S Output
+* Software UARTs (Serial ports)

 # Tutorials from Across the Web
 Here are some links to coverage and additional tutorials for using `arduino-pico`
@@ -1,315 +0,0 @@
-/*
- * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include "hardware/regs/m0plus.h"
-#include "hardware/platform_defs.h"
-#include "hardware/regs/addressmap.h"
-#include "hardware/regs/sio.h"
-#include "pico/binary_info/defs.h"
-
-#ifdef NDEBUG
-#ifndef COLLAPSE_IRQS
-#define COLLAPSE_IRQS
-#endif
-#endif
-
-.syntax unified
-.cpu cortex-m0plus
-.thumb
-
-.section .vectors, "ax"
-.align 2
-
-.global __vectors
-__vectors:
-.word __StackTop
-.word _reset_handler
-.word isr_nmi
-.word isr_hardfault
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_svcall
-.word isr_invalid // Reserved, should never fire
-.word isr_invalid // Reserved, should never fire
-.word isr_pendsv
-.word isr_systick
-.word isr_irq0
-.word isr_irq1
-.word isr_irq2
-.word isr_irq3
-.word isr_irq4
-.word isr_irq5
-.word isr_irq6
-.word isr_irq7
-.word isr_irq8
-.word isr_irq9
-.word isr_irq10
-.word isr_irq11
-.word isr_irq12
-.word isr_irq13
-.word isr_irq14
-.word isr_irq15
-.word isr_irq16
-.word isr_irq17
-.word isr_irq18
-.word isr_irq19
-.word isr_irq20
-.word isr_irq21
-.word isr_irq22
-.word isr_irq23
-.word isr_irq24
-.word isr_irq25
-.word isr_irq26
-.word isr_irq27
-.word isr_irq28
-.word isr_irq29
-.word isr_irq30
-.word isr_irq31
-
-// Declare a weak symbol for each ISR.
-// By default, they will fall through to the undefined IRQ handler below (breakpoint),
-// but can be overridden by C functions with correct name.
-
-.macro decl_isr_bkpt name
-.weak \name
-.type \name,%function
-.thumb_func
-\name:
-    bkpt #0
-.endm
-
-// these are separated out for clarity
-decl_isr_bkpt isr_invalid
-decl_isr_bkpt isr_nmi
-decl_isr_bkpt isr_hardfault
-decl_isr_bkpt isr_svcall
-decl_isr_bkpt isr_pendsv
-decl_isr_bkpt isr_systick
-
-.macro decl_isr name
-.weak \name
-.type \name,%function
-.thumb_func
-\name:
-.endm
-
-decl_isr isr_irq0
-decl_isr isr_irq1
-decl_isr isr_irq2
-decl_isr isr_irq3
-decl_isr isr_irq4
-decl_isr isr_irq5
-decl_isr isr_irq6
-decl_isr isr_irq7
-decl_isr isr_irq8
-decl_isr isr_irq9
-decl_isr isr_irq10
-decl_isr isr_irq11
-decl_isr isr_irq12
-decl_isr isr_irq13
-decl_isr isr_irq14
-decl_isr isr_irq15
-decl_isr isr_irq16
-decl_isr isr_irq17
-decl_isr isr_irq18
-decl_isr isr_irq19
-decl_isr isr_irq20
-decl_isr isr_irq21
-decl_isr isr_irq22
-decl_isr isr_irq23
-decl_isr isr_irq24
-decl_isr isr_irq25
-decl_isr isr_irq26
-decl_isr isr_irq27
-decl_isr isr_irq28
-decl_isr isr_irq29
-decl_isr isr_irq30
-decl_isr isr_irq31
-
-// All unhandled USER IRQs fall through to here
-.global __unhandled_user_irq
-.thumb_func
-__unhandled_user_irq:
-    bl __get_current_exception
-    subs r0, #16
-.global unhandled_user_irq_num_in_r0
-unhandled_user_irq_num_in_r0:
-    bkpt #0
-
-.section .reset, "ax"
-
-// This is the beginning of the image, which is entered from stage2 or bootrom USB MSD watchdog reboot
-
-// note if we are NO_FLASH then start: below is currently identical anyway, so save 4 bytes
-#if !PICO_NO_FLASH
-    // We simply install our own vector table and redirect through it
-    ldr r0, =__vectors
-    b __vector_entry
-#endif
-
-// ELF entry point generally called when we load an ELF via debugger
-.type _entry_point,%function
-.thumb_func
-.global _entry_point
-_entry_point:
-
-#if PICO_NO_FLASH
-    // non flash
-    ldr r0, =__vectors
-#else
-    // todo clear watchdog?
-    // When using flash, we install and use the ROM vector table to go thru regular bootrom/stage2 flash sequence
-    movs r0, #0
-#endif
-
-__vector_entry:
-    ldr r1, =(PPB_BASE + M0PLUS_CPUID_OFFSET)
-    str r0, [r1, #8]
-    ldmia r0!, {r1, r2}
-    msr msp, r1
-    bx r2
-
-// ----------------------------------------------------------------------------
-// Reset handler:
-// - initialises .data
-// - clears .bss
-// - calls runtime_init
-// - calls main
-// - calls exit (which should eventually hang the processor via _exit)
-
-.type _reset_handler,%function
-.thumb_func
-_reset_handler:
-    // Hang all cores except core 0
-    ldr r0, =(SIO_BASE + SIO_CPUID_OFFSET)
-    ldr r0, [r0]
-    cmp r0, #0
-    bne wait_for_vector
-
-    adr r4, data_cpy_table
-
-    // assume there is at least one entry
-1:
-    ldmia r4!, {r1-r3}
-    cmp r1, #0
-    beq 2f
-    bl data_cpy
-    b 1b
-2:
-
-    // Zero out the BSS
-    ldr r1, =__bss_start__
-    ldr r2, =__bss_end__
-    movs r0, #0
-    b bss_fill_test
-bss_fill_loop:
-    stm r1!, {r0}
-bss_fill_test:
-    cmp r1, r2
-    bne bss_fill_loop
-
-platform_entry: // symbol for stack traces
-    // Use 32-bit jumps, in case these symbols are moved out of branch range
-    // (e.g. if main is in SRAM and crt0 in flash)
-    ldr r1, =runtime_init
-    blx r1
-    ldr r1, =main
-    blx r1
-    ldr r1, =exit
-    blx r1
-    // exit should not return.  If it does, hang the core.
-    // (fall thru into our hang _exit impl
-.weak _exit
-.type _exit,%function
-.thumb_func
-_exit:
-1: // separate label because _exit can be moved out of branch range
-    bkpt #0
-    b 1b
-
-data_cpy_loop:
-    ldm r1!, {r0}
-    stm r2!, {r0}
-data_cpy:
-    cmp r2, r3
-    blo data_cpy_loop
-    bx lr
-
-#if !PICO_NO_BINARY_INFO
-binary_info_header:
-.word BINARY_INFO_MARKER_START
-.word __binary_info_start
-.word __binary_info_end
-.word data_cpy_table // we may need to decode pointers that are in RAM at runtime.
-.word BINARY_INFO_MARKER_END
-#endif
-
-.align 2
-data_cpy_table:
-#if PICO_COPY_TO_RAM
-.word __ram_text_source__
-.word __ram_text_start__
-.word __ram_text_end__
-#endif
-.word __etext
-.word __data_start__
-.word __data_end__
-
-.word __scratch_x_source__
-.word __scratch_x_start__
-.word __scratch_x_end__
-
-.word __scratch_y_source__
-.word __scratch_y_start__
-.word __scratch_y_end__
-
-.word 0 // null terminator
-
-// ----------------------------------------------------------------------------
-// Provide safe defaults for _exit and runtime_init
-// Full implementations usually provided by platform.c
-
-.weak runtime_init
-.type runtime_init,%function
-.thumb_func
-runtime_init:
-    bx lr
-
-// ----------------------------------------------------------------------------
-// In case core 1's VTOR has already been moved into flash, we need to handle
-// core 1 reset. However, we do so by just jumping back into bootrom version of
-// wait_for_vector
-
-wait_for_vector:
-    ldr r0, = 'W' | ('V' << 8)
-    bl rom_func_lookup
-    bx r0
-
-.global __get_current_exception
-.thumb_func
-__get_current_exception:
-    mrs  r0, ipsr
-    uxtb r0, r0
-    bx   lr
-
-// ----------------------------------------------------------------------------
-// Stack/heap dummies to set size
-
-.section .stack
-// align to allow for memory protection (although this alignment is pretty much ignored by linker script)
-.align 5
-    .equ StackSize, PICO_STACK_SIZE
-.space StackSize
-
-.section .heap
-.align 2
-    .equ HeapSize, PICO_HEAP_SIZE
-.space HeapSize
@@ -25,11 +25,13 @@
 #include <stdlib.h>
 #include <string.h>
 #include "stdlib_noniso.h" // Wacky deprecated AVR compatibility functions
+#include "RP2040Version.h"
 #include "api/ArduinoAPI.h"
 #include "api/itoa.h" // ARM toolchain doesn't provide itoa etc, provide them
 #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()
@@ -69,6 +71,7 @@ void noInterrupts();
 #define portModeRegister(port)      ((volatile uint32_t*) sio_hw->gpio_oe)

 // ADC RP2040-specific calls
+void analogReadResolution(int bits);
 float analogReadTemp();  // Returns core temp in Centigrade

 // PWM RP2040-specific calls
@@ -95,7 +98,8 @@ void analogWriteResolution(int res);
 #endif

 #include "SerialUART.h"
-#include "RP2040.h"
+#include "RP2040Support.h"
+#include "SerialPIO.h"
 #include "Bootsel.h"

 // Template which will evaluate at *compile time* to a single 32b number
@@ -21,6 +21,8 @@
 #include <hardware/clocks.h>
 #include <hardware/irq.h>
 #include <hardware/pio.h>
+#include <hardware/exception.h>
+#include <hardware/structs/systick.h>
 #include <pico/multicore.h>
 #include <pico/util/queue.h>
 #include <CoreMutex.h>
@@ -92,6 +94,18 @@ public:
        // once otherIdled == false.
    }

+    void clear() {
+        uint32_t val;
+
+        while (queue_try_remove(&_queue[0], &val)) {
+            tight_loop_contents();
+        }
+
+        while (queue_try_remove(&_queue[1], &val)) {
+            tight_loop_contents();
+        }
+    }
+
 private:
    static void __no_inline_not_in_flash_func(_irq)() {
        multicore_fifo_clear_irq();
@@ -114,8 +128,23 @@ private:
    static constexpr int _GOTOSLEEP = 0x66666666;
 };

+class RP2040;
+extern RP2040 rp2040;
+extern "C" void main1();
+
 class RP2040 {
 public:
+    RP2040() {
+        _epoch = 0;
+        // Enable SYSTICK exception
+        exception_set_exclusive_handler(SYSTICK_EXCEPTION, _SystickHandler);
+        systick_hw->csr = 0x7;
+        systick_hw->rvr = 0x00FFFFFF;
+    }
+
+    ~RP2040() { /* noop */ }
+
+
    // Convert from microseconds to PIO clock cycles
    static int usToPIOCycles(int us) {
        // Parenthesis needed to guarantee order of operations to avoid 32bit overflow
@@ -127,18 +156,50 @@ public:
        return clock_get_hz(clk_sys);
    }

+    // Get CPU cycle count.  Needs to do magic to extens 24b HW to something longer
+    volatile uint64_t _epoch = 0;
+    inline uint32_t getCycleCount() {
+        uint32_t epoch;
+        uint32_t ctr;
+        do {
+            epoch = (uint32_t)_epoch;
+            ctr = systick_hw->cvr;
+        } while (epoch != (uint32_t)_epoch);
+        return epoch + (1 << 24) - ctr; /* CTR counts down from 1<<24-1 */
+    }
+
+    inline uint64_t getCycleCount64() {
+        uint64_t epoch;
+        uint64_t ctr;
+        do {
+            epoch = _epoch;
+            ctr = systick_hw->cvr;
+        } while (epoch != _epoch);
+        return epoch + (1LL << 24) - ctr;
+    }
+
    void idleOtherCore() {
        fifo.idleOtherCore();
    }
+
    void resumeOtherCore() {
        fifo.resumeOtherCore();
    }

+    void restartCore1() {
+        multicore_reset_core1();
+        fifo.clear();
+        multicore_launch_core1(main1);
+    }
+
    // Multicore comms FIFO
    _MFIFO fifo;
-};

-extern RP2040 rp2040;
+private:
+    static void _SystickHandler() {
+        rp2040._epoch += 1LL << 24;
+    }
+};

 // Wrapper class for PIO programs, abstracting common operations out
 // TODO - Add unload/destructor
@@ -19,7 +19,7 @@
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

-#ifndef USE_TINYUSB
+#if !defined(USE_TINYUSB) && !defined(NO_USB)

 #include <Arduino.h>
 #include "CoreMutex.h"
@@ -52,7 +52,6 @@ mutex_t __usb_mutex;
 #endif

 #define USBD_DESC_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN)
-#define USBD_MAX_POWER_MA (250)

 #define USBD_ITF_CDC (0) // needs 2 interfaces
 #define USBD_ITF_MAX (2)
@@ -122,32 +121,48 @@ int __USBGetMouseReportID() {
 }

 static uint8_t *GetDescHIDReport(int *len) {
+    static uint8_t *report = nullptr;
+    int report_len = 0;
+
+    if (report) {
+        free(report);
+        report = nullptr;
+    }
+
    if (__USBInstallKeyboard && __USBInstallMouse) {
-        static uint8_t desc_hid_report[] = {
+        uint8_t desc_hid_report[] = {
            TUD_HID_REPORT_DESC_KEYBOARD(HID_REPORT_ID(1)),
            TUD_HID_REPORT_DESC_MOUSE(HID_REPORT_ID(2))
        };
-        if (len) {
-            *len = sizeof(desc_hid_report);
+        report_len = sizeof(desc_hid_report);
+        report = (uint8_t *)malloc(report_len);
+        if (report) {
+            memcpy(report, desc_hid_report, report_len);
        }
-        return desc_hid_report;
    } else if (__USBInstallKeyboard && ! __USBInstallMouse) {
-        static uint8_t desc_hid_report[] = {
+        uint8_t desc_hid_report[] = {
            TUD_HID_REPORT_DESC_KEYBOARD(HID_REPORT_ID(1))
        };
-        if (len) {
-            *len = sizeof(desc_hid_report);
+        report_len = sizeof(desc_hid_report);
+        report = (uint8_t *)malloc(report_len);
+        if (report) {
+            memcpy(report, desc_hid_report, report_len);
        }
-        return desc_hid_report;
    } else { // if (!__USBInstallKeyboard && __USBInstallMouse) {
-        static uint8_t desc_hid_report[] = {
+        uint8_t desc_hid_report[] = {
            TUD_HID_REPORT_DESC_MOUSE(HID_REPORT_ID(1))
        };
-        if (len) {
-            *len = sizeof(desc_hid_report);
+        report_len = sizeof(desc_hid_report);
+        report = (uint8_t *)malloc(report_len);
+        if (report) {
+            memcpy(report, desc_hid_report, report_len);
        }
-        return desc_hid_report;
    }
+
+    if (len) {
+        *len = report_len;
+    }
+    return report;
 }

 // Invoked when received GET HID REPORT DESCRIPTOR
@@ -161,14 +176,14 @@ uint8_t const * tud_hid_descriptor_report_cb(uint8_t instance) {

 const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
    (void)index;
-    static uint8_t *usbd_desc_cfg;
+    static uint8_t *usbd_desc_cfg = nullptr;

    if (!usbd_desc_cfg) {
        bool hasHID = __USBInstallKeyboard || __USBInstallMouse;

        uint8_t interface_count = (__USBInstallSerial ? 2 : 0) + (hasHID ? 1 : 0) + (__USBInstallMIDI ? 2 : 0);

-        static uint8_t cdc_desc[TUD_CDC_DESC_LEN] = {
+        uint8_t cdc_desc[TUD_CDC_DESC_LEN] = {
            // Interface number, string index, protocol, report descriptor len, EP In & Out address, size & polling interval
            TUD_CDC_DESCRIPTOR(USBD_ITF_CDC, USBD_STR_CDC, USBD_CDC_EP_CMD, USBD_CDC_CMD_MAX_SIZE, USBD_CDC_EP_OUT, USBD_CDC_EP_IN, USBD_CDC_IN_OUT_MAX_SIZE)
        };
@@ -176,40 +191,42 @@ const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
        int hid_report_len;
        GetDescHIDReport(&hid_report_len);
        uint8_t hid_itf = __USBInstallSerial ? 2 : 0;
-        static uint8_t hid_desc[TUD_HID_DESC_LEN] = {
+        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)
        };

        uint8_t midi_itf = hid_itf + (hasHID ? 1 : 0);
-        static uint8_t midi_desc[TUD_MIDI_DESC_LEN] = {
+        uint8_t midi_desc[TUD_MIDI_DESC_LEN] = {
            // Interface number, string index, EP Out & EP In address, EP size
            TUD_MIDI_DESCRIPTOR(midi_itf, 0, EPNUM_MIDI, 0x80 | EPNUM_MIDI, 64)
        };

        int usbd_desc_len = TUD_CONFIG_DESC_LEN + (__USBInstallSerial ? sizeof(cdc_desc) : 0) + (hasHID ? sizeof(hid_desc) : 0) + (__USBInstallMIDI ? sizeof(midi_desc) : 0);

-        static uint8_t tud_cfg_desc[TUD_CONFIG_DESC_LEN] = {
+        uint8_t tud_cfg_desc[TUD_CONFIG_DESC_LEN] = {
            // Config number, interface count, string index, total length, attribute, power in mA
            TUD_CONFIG_DESCRIPTOR(1, interface_count, USBD_STR_0, usbd_desc_len, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, USBD_MAX_POWER_MA)
        };

        // Combine to one descriptor
        usbd_desc_cfg = (uint8_t *)malloc(usbd_desc_len);
-        bzero(usbd_desc_cfg, usbd_desc_len);
-        uint8_t *ptr = usbd_desc_cfg;
-        memcpy(ptr, tud_cfg_desc, sizeof(tud_cfg_desc));
-        ptr += sizeof(tud_cfg_desc);
-        if (__USBInstallSerial) {
-            memcpy(ptr, cdc_desc, sizeof(cdc_desc));
-            ptr += sizeof(cdc_desc);
-        }
-        if (hasHID) {
-            memcpy(ptr, hid_desc, sizeof(hid_desc));
-            ptr += sizeof(hid_desc);
-        }
-        if (__USBInstallMIDI) {
-            memcpy(ptr, midi_desc, sizeof(midi_desc));
+        if (usbd_desc_cfg) {
+            bzero(usbd_desc_cfg, usbd_desc_len);
+            uint8_t *ptr = usbd_desc_cfg;
+            memcpy(ptr, tud_cfg_desc, sizeof(tud_cfg_desc));
+            ptr += sizeof(tud_cfg_desc);
+            if (__USBInstallSerial) {
+                memcpy(ptr, cdc_desc, sizeof(cdc_desc));
+                ptr += sizeof(cdc_desc);
+            }
+            if (hasHID) {
+                memcpy(ptr, hid_desc, sizeof(hid_desc));
+                ptr += sizeof(hid_desc);
+            }
+            if (__USBInstallMIDI) {
+                memcpy(ptr, midi_desc, sizeof(midi_desc));
+            }
        }
    }
    return usbd_desc_cfg;
@@ -277,6 +294,7 @@ void __USBStart() {
    }

    mutex_init(&__usb_mutex);
+
    tusb_init();

    irq_set_exclusive_handler(USB_TASK_IRQ, usb_irq);
@@ -0,0 +1,5 @@
+#pragma once
+#define ARDUINO_PICO_MAJOR 1
+#define ARDUINO_PICO_MINOR 13
+#define ARDUINO_PICO_REVISION 2
+#define ARDUINO_PICO_VERSION_STR "1.13.2"
@@ -0,0 +1,345 @@
+/*
+    Serial-over-PIO for the Raspberry Pi Pico RP2040
+
+    Copyright (c) 2021 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
+*/
+
+#include "SerialPIO.h"
+#include "CoreMutex.h"
+#include <hardware/gpio.h>
+#include <map>
+#include "pio_uart.pio.h"
+
+
+// ------------------------------------------------------------------------
+// -- Generates a unique program for differing bit lengths
+static std::map<int, PIOProgram*> _txMap;
+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;
+    p->length = pg->length;
+    p->origin = pg->origin;
+    uint16_t *insn = (uint16_t *)malloc(p->length * 2);
+    if (!insn) {
+        delete p;
+        return nullptr;
+    }
+    memcpy(insn, pg->instructions, p->length * 2);
+    insn[0] = pio_encode_set(pio_x, repl);
+    p->instructions = insn;
+    return p;
+}
+
+static PIOProgram *_getTxProgram(int bits) {
+    auto f = _txMap.find(bits);
+    if (f == _txMap.end()) {
+        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) {
+    auto f = _rxMap.find(bits);
+    if (f == _rxMap.end()) {
+        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;
+}
+// ------------------------------------------------------------------------
+
+// TODO - this works, but there must be a faster/better way...
+static int _parity(int bits, int data) {
+    int p = 0;
+    for (int b = 0; b < bits; b++) {
+        p ^= (data & (1 << b)) ? 1 : 0;
+    }
+    return p;
+}
+
+// We need to cache generated SerialPIOs so we can add data to them from
+// the shared handler
+static SerialPIO *_pioSP[2][4];
+static void __not_in_flash_func(_fifoIRQ)() {
+    for (int p = 0; p < 2; p++) {
+        for (int sm = 0; sm < 4; sm++) {
+            SerialPIO *s = _pioSP[p][sm];
+            if (s) {
+                s->_handleIRQ();
+                pio_interrupt_clear((p == 0) ? pio0 : pio1, sm);
+            }
+        }
+    }
+}
+
+void __not_in_flash_func(SerialPIO::_handleIRQ)() {
+    if (_rx == NOPIN) {
+        return;
+    }
+    while (!pio_sm_is_rx_fifo_empty(_rxPIO, _rxSM)) {
+        uint32_t decode = _rxPIO->rxf[_rxSM];
+        decode >>= 32 - _rxBits;
+        uint32_t val = 0;
+        for (int b = 0; b < _bits + 1; b++) {
+            val |= (decode & (1 << (b * 2))) ? 1 << b : 0;
+        }
+        if (_parity == UART_PARITY_EVEN) {
+            int p = ::_parity(_bits, val);
+            int r = (val & (1 << _bits)) ? 1 : 0;
+            if (p != r) {
+                // TODO - parity error
+                continue;
+            }
+        } else if (_parity == UART_PARITY_ODD) {
+            int p = ::_parity(_bits, val);
+            int r = (val & (1 << _bits)) ? 1 : 0;
+            if (p == r) {
+                // TODO - parity error
+                continue;
+            }
+        }
+
+        auto next_writer = _writer + 1;
+        if (next_writer == _fifoSize) {
+            next_writer = 0;
+        }
+        if (next_writer != _reader) {
+            _queue[_writer] = val & ((1 << _bits) -  1);
+            asm volatile("" ::: "memory"); // Ensure the queue is written before the written count advances
+            _writer = next_writer;
+        } else {
+            // TODO: Overflow
+        }
+    }
+}
+
+SerialPIO::SerialPIO(pin_size_t tx, pin_size_t rx, size_t fifoSize) {
+    _tx = tx;
+    _rx = rx;
+    _fifoSize = fifoSize + 1; // Always one unused entry
+    _queue = new uint8_t[_fifoSize];
+    mutex_init(&_mutex);
+}
+
+SerialPIO::~SerialPIO() {
+    end();
+    delete[] _queue;
+}
+
+void SerialPIO::begin(unsigned long baud, uint16_t config) {
+    _baud = baud;
+    switch (config & SERIAL_PARITY_MASK) {
+    case SERIAL_PARITY_EVEN:
+        _parity = UART_PARITY_EVEN;
+        break;
+    case SERIAL_PARITY_ODD:
+        _parity = UART_PARITY_ODD;
+        break;
+    default:
+        _parity = UART_PARITY_NONE;
+        break;
+    }
+    switch (config & SERIAL_STOP_BIT_MASK) {
+    case SERIAL_STOP_BIT_1:
+        _stop = 1;
+        break;
+    default:
+        _stop = 2;
+        break;
+    }
+    switch (config & SERIAL_DATA_MASK) {
+    case SERIAL_DATA_5:
+        _bits = 5;
+        break;
+    case SERIAL_DATA_6:
+        _bits = 6;
+        break;
+    case SERIAL_DATA_7:
+        _bits = 7;
+        break;
+    default:
+        _bits = 8;
+        break;
+    }
+
+    if ((_tx == NOPIN) && (_rx == NOPIN)) {
+        DEBUGCORE("ERROR: No pins specified for SerialPIO\n");
+        return;
+    }
+
+    if (_tx != NOPIN) {
+        _txBits = _bits + _stop + (_parity != UART_PARITY_NONE ? 1 : 0) + 1/*start bit*/;
+        _txPgm = _getTxProgram(_txBits);
+        int off;
+        if (!_txPgm->prepare(&_txPIO, &_txSM, &off)) {
+            DEBUGCORE("ERROR: Unable to allocate PIO TX UART, out of PIO resources\n");
+            // ERROR, no free slots
+            return;
+        }
+
+        digitalWrite(_tx, HIGH);
+        pinMode(_tx, OUTPUT);
+
+        pio_tx_program_init(_txPIO, _txSM, off, _tx);
+        pio_sm_clear_fifos(_txPIO, _txSM); // Remove any existing data
+
+        // Put the divider into ISR w/o using up program space
+        pio_sm_put_blocking(_txPIO, _txSM, clock_get_hz(clk_sys) / _baud - 2);
+        pio_sm_exec(_txPIO, _txSM, pio_encode_pull(false, false));
+        pio_sm_exec(_txPIO, _txSM, pio_encode_mov(pio_isr, pio_osr));
+
+        // Start running!
+        pio_sm_set_enabled(_txPIO, _txSM, true);
+    }
+    if (_rx != NOPIN) {
+        _writer = 0;
+        _reader = 0;
+
+        _rxBits = 2 * (_bits + _stop + (_parity != UART_PARITY_NONE ? 1 : 0) + 1) - 1;
+        _rxPgm = _getRxProgram(_rxBits);
+        int off;
+        if (!_rxPgm->prepare(&_rxPIO, &_rxSM, &off)) {
+            DEBUGCORE("ERROR: Unable to allocate PIO RX UART, out of PIO resources\n");
+            return;
+        }
+        // Stash away the created RX port for the IRQ handler
+        _pioSP[pio_get_index(_rxPIO)][_rxSM] = this;
+
+        pinMode(_rx, INPUT);
+        pio_rx_program_init(_rxPIO, _rxSM, off, _rx);
+        pio_sm_clear_fifos(_rxPIO, _rxSM); // Remove any existing data
+
+        // Put phase divider into OSR w/o using add'l program memory
+        pio_sm_put_blocking(_rxPIO, _rxSM, clock_get_hz(clk_sys) / (_baud * 2) - 2);
+        pio_sm_exec(_rxPIO, _rxSM, pio_encode_pull(false, false));
+
+        // Join the TX FIFO to the RX one now that we don't need it
+        _rxPIO->sm[_rxSM].shiftctrl |= 0x80000000;
+
+        // Enable interrupts on rxfifo
+        switch (_rxSM) {
+        case 0: pio_set_irq0_source_enabled(_rxPIO, pis_sm0_rx_fifo_not_empty, true); break;
+        case 1: pio_set_irq0_source_enabled(_rxPIO, pis_sm1_rx_fifo_not_empty, true); break;
+        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;
+        irq_set_exclusive_handler(irqno, _fifoIRQ);
+        irq_set_enabled(irqno, true);
+
+        pio_sm_set_enabled(_rxPIO, _rxSM, true);
+    }
+
+    _running = true;
+}
+
+void SerialPIO::end() {
+    if (!_running) {
+        return;
+    }
+    // TODO: Deallocate PIO resources, stop them
+    _pioSP[pio_get_index(_rxPIO)][_rxSM] = nullptr;
+    _running = false;
+}
+
+int SerialPIO::peek() {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_rx == NOPIN)) {
+        return -1;
+    }
+    // If there's something in the FIFO now, just peek at it
+    if (_writer != _reader) {
+        return _queue[_reader];
+    }
+    return -1;
+}
+
+int SerialPIO::read() {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_rx == NOPIN)) {
+        return -1;
+    }
+    if (_writer != _reader) {
+        auto ret = _queue[_reader];
+        asm volatile("" ::: "memory"); // Ensure the value is read before advancing
+        auto next_reader = (_reader + 1) % _fifoSize;
+        asm volatile("" ::: "memory"); // Ensure the reader value is only written once, correctly
+        _reader = next_reader;
+        return ret;
+    }
+    return -1;
+}
+
+int SerialPIO::available() {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_rx == NOPIN)) {
+        return 0;
+    }
+    return (_writer - _reader) % _fifoSize;
+}
+
+int SerialPIO::availableForWrite() {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_tx == NOPIN)) {
+        return 0;
+    }
+    return 8 - pio_sm_get_tx_fifo_level(_txPIO, _txSM);
+}
+
+void SerialPIO::flush() {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_tx == NOPIN)) {
+        return;
+    }
+    while (!pio_sm_is_tx_fifo_empty(_txPIO, _txSM)) {
+        delay(1); // Wait for all FIFO to be read
+    }
+    // Could have 1 byte being transmitted, so wait for bit times
+    delay((1000 * (_txBits + 1)) / _baud);
+}
+
+size_t SerialPIO::write(uint8_t c) {
+    CoreMutex m(&_mutex);
+    if (!_running || !m || (_tx == NOPIN)) {
+        return 0;
+    }
+
+    uint32_t val = c;
+    if (_parity == UART_PARITY_NONE) {
+        val |= 7 << _bits; // Set 2 stop bits, the HW will only transmit the required number
+    } else if (_parity == UART_PARITY_EVEN) {
+        val |= ::_parity(_bits, c) << _bits;
+        val |= 7 << (_bits + 1);
+    } else {
+        val |= (1 ^ ::_parity(_bits, c)) << _bits;
+        val |= 7 << (_bits + 1);
+    }
+    val <<= 1;  // Start bit = low
+
+    pio_sm_put_blocking(_txPIO, _txSM, val);
+
+    return 1;
+}
+
+SerialPIO::operator bool() {
+    return _running;
+}
@@ -0,0 +1,80 @@
+/*
+    Serial-over-PIO for the Raspberry Pi Pico RP2040
+
+    Copyright (c) 2021 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 <Arduino.h>
+#include "api/HardwareSerial.h"
+#include <stdarg.h>
+#include <queue>
+#include <hardware/uart.h>
+#include "CoreMutex.h"
+
+extern "C" typedef struct uart_inst uart_inst_t;
+
+class SerialPIO : public HardwareSerial {
+public:
+    static const pin_size_t NOPIN = 0xff; // Use in constructor to disable RX or TX unit
+    SerialPIO(pin_size_t tx, pin_size_t rx, size_t fifoSize = 32);
+    ~SerialPIO();
+
+    void begin(unsigned long baud = 115200) override {
+        begin(baud, SERIAL_8N1);
+    };
+    void begin(unsigned long baud, uint16_t config) override;
+    void end() override;
+
+    virtual int peek() override;
+    virtual int read() override;
+    virtual int available() override;
+    virtual int availableForWrite() override;
+    virtual void flush() override;
+    virtual size_t write(uint8_t c) override;
+    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
+    void _handleIRQ();
+
+private:
+    bool _running = false;
+    pin_size_t _tx, _rx;
+    int _baud;
+    int _bits;
+    uart_parity_t _parity;
+    int _stop;
+    mutex_t _mutex;
+
+    PIOProgram *_txPgm;
+    PIO _txPIO;
+    int _txSM;
+    int _txBits;
+
+    PIOProgram *_rxPgm;
+    PIO _rxPIO;
+    int _rxSM;
+    int _rxBits;
+
+    // Lockless, IRQ-handled circular queue
+    size_t   _fifoSize;
+    uint32_t _writer;
+    uint32_t _reader;
+    uint8_t  *_queue;
+};
@@ -65,46 +65,173 @@ bool SerialUART::setTX(pin_size_t pin) {
    return false;
 }

-SerialUART::SerialUART(uart_inst_t *uart, pin_size_t tx, pin_size_t rx) {
+bool SerialUART::setRTS(pin_size_t pin) {
+    constexpr uint32_t valid[2] = { __bitset({3, 15, 19}) /* UART0 */,
+                                    __bitset({7, 11, 23, 27})  /* UART1 */
+                                  };
+    if ((!_running) && ((1 << pin) & valid[uart_get_index(_uart)])) {
+        _rts = pin;
+        return true;
+    }
+
+    if (_running) {
+        panic("FATAL: Attempting to set Serial%d.RTS while running", uart_get_index(_uart) + 1);
+    } else {
+        panic("FATAL: Attempting to set Serial%d.RTS to illegal pin %d", uart_get_index(_uart) + 1, pin);
+    }
+    return false;
+}
+
+bool SerialUART::setCTS(pin_size_t pin) {
+    constexpr uint32_t valid[2] = { __bitset({2, 14, 18}) /* UART0 */,
+                                    __bitset({6, 10, 22, 26})  /* UART1 */
+                                  };
+    if ((!_running) && ((1 << pin) & valid[uart_get_index(_uart)])) {
+        _cts = pin;
+        return true;
+    }
+
+    if (_running) {
+        panic("FATAL: Attempting to set Serial%d.CTS while running", uart_get_index(_uart) + 1);
+    } else {
+        panic("FATAL: Attempting to set Serial%d.CTS to illegal pin %d", uart_get_index(_uart) + 1, pin);
+    }
+    return false;
+}
+bool SerialUART::setPollingMode(bool mode) {
+    if (_running) {
+        return false;
+    }
+    _polling = mode;
+    return true;
+}
+
+bool SerialUART::setFIFOSize(size_t size) {
+    if (!size || _running) {
+        return false;
+    }
+    _fifoSize = size + 1; // Always 1 unused entry
+    return true;
+}
+
+SerialUART::SerialUART(uart_inst_t *uart, pin_size_t tx, pin_size_t rx, pin_size_t rts, pin_size_t cts) {
    _uart = uart;
    _tx = tx;
    _rx = rx;
+    _rts = rts;
+    _cts = cts;
    mutex_init(&_mutex);
+    mutex_init(&_fifoMutex);
 }

+static void _uart0IRQ();
+static void _uart1IRQ();
+
 void SerialUART::begin(unsigned long baud, uint16_t config) {
+    if (_running) {
+        end();
+    }
+    _queue = new uint8_t[_fifoSize];
    _baud = baud;
    uart_init(_uart, baud);
    int bits, stop;
    uart_parity_t parity;
    switch (config & SERIAL_PARITY_MASK) {
-    case SERIAL_PARITY_EVEN: parity = UART_PARITY_EVEN; break;
-    case SERIAL_PARITY_ODD: parity = UART_PARITY_ODD; break;
-    default: parity = UART_PARITY_NONE; break;
+    case SERIAL_PARITY_EVEN:
+        parity = UART_PARITY_EVEN;
+        break;
+    case SERIAL_PARITY_ODD:
+        parity = UART_PARITY_ODD;
+        break;
+    default:
+        parity = UART_PARITY_NONE;
+        break;
    }
    switch (config & SERIAL_STOP_BIT_MASK) {
-    case SERIAL_STOP_BIT_1: stop = 1; break;
-    default: stop = 2; break;
+    case SERIAL_STOP_BIT_1:
+        stop = 1;
+        break;
+    default:
+        stop = 2;
+        break;
    }
    switch (config & SERIAL_DATA_MASK) {
-    case SERIAL_DATA_5: bits = 5; break;
-    case SERIAL_DATA_6: bits = 6; break;
-    case SERIAL_DATA_7: bits = 7; break;
-    default: bits = 8; break;
+    case SERIAL_DATA_5:
+        bits = 5;
+        break;
+    case SERIAL_DATA_6:
+        bits = 6;
+        break;
+    case SERIAL_DATA_7:
+        bits = 7;
+        break;
+    default:
+        bits = 8;
+        break;
    }
    uart_set_format(_uart, bits, stop, parity);
    gpio_set_function(_tx, GPIO_FUNC_UART);
    gpio_set_function(_rx, GPIO_FUNC_UART);
+    if (_rts != UART_PIN_NOT_DEFINED) {
+        gpio_set_function(_rts, GPIO_FUNC_UART);
+    }
+    if (_cts != UART_PIN_NOT_DEFINED) {
+        gpio_set_function(_cts, GPIO_FUNC_UART);
+    }
+    uart_set_hw_flow(_uart, _rts != UART_PIN_NOT_DEFINED, _cts != UART_PIN_NOT_DEFINED);
+    _writer = 0;
+    _reader = 0;
+
+    if (!_polling) {
+        if (_uart == uart0) {
+            irq_set_exclusive_handler(UART0_IRQ, _uart0IRQ);
+            irq_set_enabled(UART0_IRQ, true);
+        } else {
+            irq_set_exclusive_handler(UART1_IRQ, _uart1IRQ);
+            irq_set_enabled(UART1_IRQ, true);
+        }
+        // Set the IRQ enables and FIFO level to minimum
+        uart_set_irq_enables(_uart, true, false);
+    } else {
+        // Polling mode has no IRQs used
+    }
    _running = true;
-    _peek = -1;
 }

 void SerialUART::end() {
    if (!_running) {
        return;
    }
-    uart_deinit(_uart);
    _running = false;
+    if (!_polling) {
+        if (_uart == uart0) {
+            irq_set_enabled(UART0_IRQ, false);
+        } else {
+            irq_set_enabled(UART1_IRQ, false);
+        }
+    }
+    // Paranoia - ensure nobody else is using anything here at the same time
+    mutex_enter_blocking(&_mutex);
+    mutex_enter_blocking(&_fifoMutex);
+    uart_deinit(_uart);
+    delete[] _queue;
+    // Reset the mutexes once all is off/cleaned up
+    mutex_exit(&_fifoMutex);
+    mutex_exit(&_mutex);
+}
+
+void SerialUART::_pumpFIFO() {
+    // Use the _fifoMutex to guard against the other core potentially
+    // running the IRQ (since we can't disable their IRQ handler).
+    // We guard against this core by disabling the IRQ handler and
+    // re-enabling if it was previously enabled at the end.
+    auto irqno = (_uart == uart0) ? UART0_IRQ : UART1_IRQ;
+    bool enabled = irq_is_enabled(irqno);
+    irq_set_enabled(irqno, false);
+    mutex_enter_blocking(&_fifoMutex);
+    _handleIRQ(false);
+    mutex_exit(&_fifoMutex);
+    irq_set_enabled(irqno, enabled);
 }

 int SerialUART::peek() {
@@ -112,11 +239,15 @@ int SerialUART::peek() {
    if (!_running || !m) {
        return -1;
    }
-    if (_peek >= 0) {
-        return _peek;
+    if (_polling) {
+        _handleIRQ(false);
+    } else {
+        _pumpFIFO();
    }
-    _peek = uart_getc(_uart);
-    return _peek;
+    if (_writer != _reader) {
+        return _queue[_reader];
+    }
+    return -1;
 }

 int SerialUART::read() {
@@ -124,12 +255,20 @@ int SerialUART::read() {
    if (!_running || !m) {
        return -1;
    }
-    if (_peek >= 0) {
-        int ret = _peek;
-        _peek = -1;
+    if (_polling) {
+        _handleIRQ(false);
+    } else {
+        _pumpFIFO();
+    }
+    if (_writer != _reader) {
+        auto ret = _queue[_reader];
+        asm volatile("" ::: "memory"); // Ensure the value is read before advancing
+        auto next_reader = (_reader + 1) % _fifoSize;
+        asm volatile("" ::: "memory"); // Ensure the reader value is only written once, correctly
+        _reader = next_reader;
        return ret;
    }
-    return uart_getc(_uart);
+    return -1;
 }

 int SerialUART::available() {
@@ -137,7 +276,12 @@ int SerialUART::available() {
    if (!_running || !m) {
        return 0;
    }
-    return (uart_is_readable(_uart)) ? 1 : 0;
+    if (_polling) {
+        _handleIRQ(false);
+    } else {
+        _pumpFIFO();
+    }
+    return (_writer - _reader) % _fifoSize;
 }

 int SerialUART::availableForWrite() {
@@ -145,6 +289,9 @@ int SerialUART::availableForWrite() {
    if (!_running || !m) {
        return 0;
    }
+    if (_polling) {
+        _handleIRQ(false);
+    }
    return (uart_is_writable(_uart)) ? 1 : 0;
 }

@@ -153,7 +300,10 @@ void SerialUART::flush() {
    if (!_running || !m) {
        return;
    }
-    uart_default_tx_wait_blocking();
+    if (_polling) {
+        _handleIRQ(false);
+    }
+    uart_tx_wait_blocking(_uart);
 }

 size_t SerialUART::write(uint8_t c) {
@@ -161,6 +311,9 @@ size_t SerialUART::write(uint8_t c) {
    if (!_running || !m) {
        return 0;
    }
+    if (_polling) {
+        _handleIRQ(false);
+    }
    uart_putc_raw(_uart, c);
    return 1;
 }
@@ -170,6 +323,9 @@ size_t SerialUART::write(const uint8_t *p, size_t len) {
    if (!_running || !m) {
        return 0;
    }
+    if (_polling) {
+        _handleIRQ(false);
+    }
    size_t cnt = len;
    while (cnt) {
        uart_putc_raw(_uart, *p);
@@ -183,8 +339,17 @@ SerialUART::operator bool() {
    return _running;
 }

+#if defined(PIN_SERIAL1_RTS)
+SerialUART Serial1(uart0, PIN_SERIAL1_TX, PIN_SERIAL1_RX, PIN_SERIAL1_RTS, PIN_SERIAL1_CTS);
+#else
 SerialUART Serial1(uart0, PIN_SERIAL1_TX, PIN_SERIAL1_RX);
+#endif
+
+#if defined(PIN_SERIAL2_RTS)
+SerialUART Serial2(uart1, PIN_SERIAL2_TX, PIN_SERIAL2_RX, PIN_SERIAL2_RTS, PIN_SERIAL2_CTS);
+#else
 SerialUART Serial2(uart1, PIN_SERIAL2_TX, PIN_SERIAL2_RX);
+#endif

 void arduino::serialEvent1Run(void) {
    if (serialEvent1 && Serial1.available()) {
@@ -197,3 +362,43 @@ void arduino::serialEvent2Run(void) {
        serialEvent2();
    }
 }
+
+// IRQ handler, called when FIFO > 1/8 full or when it had held unread data for >32 bit times
+void __not_in_flash_func(SerialUART::_handleIRQ)(bool inIRQ) {
+    if (inIRQ) {
+        uint32_t owner;
+        if (!mutex_try_enter(&_fifoMutex, &owner)) {
+            // Main app on the other core has the mutex so it is
+            // in the process of pulling data out of the HW FIFO
+            return;
+        }
+    }
+    // ICR is write-to-clear
+    uart_get_hw(_uart)->icr = UART_UARTICR_RTIC_BITS | UART_UARTICR_RXIC_BITS;
+    while (uart_is_readable(_uart)) {
+        auto val = uart_getc(_uart);
+        auto next_writer = _writer + 1;
+        if (next_writer == _fifoSize) {
+            next_writer = 0;
+        }
+        if (next_writer != _reader) {
+            _queue[_writer] = val;
+            asm volatile("" ::: "memory"); // Ensure the queue is written before the written count advances
+            // Avoid using division or mod because the HW divider could be in use
+            _writer = next_writer;
+        } else {
+            // TODO: Overflow
+        }
+    }
+    if (inIRQ) {
+        mutex_exit(&_fifoMutex);
+    }
+}
+
+static void __not_in_flash_func(_uart0IRQ)() {
+    Serial1._handleIRQ();
+}
+
+static void __not_in_flash_func(_uart1IRQ)() {
+    Serial2._handleIRQ();
+}
@@ -23,22 +23,28 @@
 #include <Arduino.h>
 #include "api/HardwareSerial.h"
 #include <stdarg.h>
+#include <queue>
 #include "CoreMutex.h"

 extern "C" typedef struct uart_inst uart_inst_t;

+#define UART_PIN_NOT_DEFINED      (255u)
 class SerialUART : public HardwareSerial {
 public:
-    SerialUART(uart_inst_t *uart, pin_size_t tx, pin_size_t rx);
+    SerialUART(uart_inst_t *uart, pin_size_t tx, pin_size_t rx, pin_size_t rts = UART_PIN_NOT_DEFINED, pin_size_t cts = UART_PIN_NOT_DEFINED);

    // Select the pinout.  Call before .begin()
    bool setRX(pin_size_t pin);
    bool setTX(pin_size_t pin);
+    bool setRTS(pin_size_t pin);
+    bool setCTS(pin_size_t pin);
    bool setPinout(pin_size_t tx, pin_size_t rx) {
        bool ret = setRX(rx);
        ret &= setTX(tx);
        return ret;
    }
+    bool setFIFOSize(size_t size);
+    bool setPollingMode(bool mode = true);

    void begin(unsigned long baud = 115200) override {
        begin(baud, SERIAL_8N1);
@@ -56,13 +62,25 @@ 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
+    void _handleIRQ(bool inIRQ = true);
+
 private:
    bool _running = false;
    uart_inst_t *_uart;
    pin_size_t _tx, _rx;
+    pin_size_t _rts, _cts;
    int _baud;
-    int _peek;
    mutex_t _mutex;
+    bool _polling = false;
+
+    // Lockless, IRQ-handled circular queue
+    uint32_t _writer;
+    uint32_t _reader;
+    size_t   _fifoSize = 32;
+    uint8_t *_queue;
+    mutex_t  _fifoMutex; // Only needed when non-IRQ updates _writer
+    void _pumpFIFO(); // User space FIFO transfer
 };

 extern SerialUART Serial1; // HW UART 0
@@ -20,7 +20,7 @@
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

-#ifndef USE_TINYUSB
+#if !defined(USE_TINYUSB) && !defined(NO_USB)

 #include <Arduino.h>
 #include "CoreMutex.h"
@@ -1,90 +0,0 @@
-/*
-    The MIT License (MIT)
-
-    Copyright (c) 2018, hathach for Adafruit
-
-    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.
-*/
-
-#ifndef _TUSB_CONFIG_H_
-#define _TUSB_CONFIG_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-//--------------------------------------------------------------------
-// COMMON CONFIGURATION
-//--------------------------------------------------------------------
-#ifdef USE_TINYUSB
-#define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
-#else
-#define CFG_TUSB_RHPORT0_MODE       OPT_MODE_NONE
-#endif
-
-//#ifndef CFG_TUSB_MCU
-// #define CFG_TUSB_MCU                OPT_MCU_RP2040
-//#endif
-#define CFG_TUSB_OS                 OPT_OS_PICO
-
-#define CFG_TUSB_DEBUG              0
-//#if CFG_TUSB_DEBUG
-//  #define tu_printf                 serial1_printf
-//  extern int serial1_printf(const char *__restrict __format, ...);
-//#endif
-
-#define CFG_TUSB_MEM_SECTION
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
-
-//--------------------------------------------------------------------
-// DEVICE CONFIGURATION
-//--------------------------------------------------------------------
-
-#define CFG_TUD_ENDOINT0_SIZE       64
-
-//------------- CLASS -------------//
-#define CFG_TUD_CDC                 1
-#define CFG_TUD_MSC                 1
-#define CFG_TUD_HID                 1
-#define CFG_TUD_MIDI                1
-#define CFG_TUD_VENDOR              1
-
-// CDC FIFO size of TX and RX
-#define CFG_TUD_CDC_RX_BUFSIZE      256
-#define CFG_TUD_CDC_TX_BUFSIZE      256
-
-// MSC Buffer size of Device Mass storage
-#define CFG_TUD_MSC_BUFSIZE         512
-
-// HID buffer size Should be sufficient to hold ID (if any) + Data
-#define CFG_TUD_HID_BUFSIZE         64
-
-// MIDI FIFO size of TX and RX
-#define CFG_TUD_MIDI_RX_BUFSIZE     128
-#define CFG_TUD_MIDI_TX_BUFSIZE     128
-
-// Vendor FIFO size of TX and RX
-#define CFG_TUD_VENDOR_RX_BUFSIZE   64
-#define CFG_TUD_VENDOR_TX_BUFSIZE   64
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _TUSB_CONFIG_H_ */
@@ -20,6 +20,10 @@ typedef enum {
  OUTPUT          = 0x1,
  INPUT_PULLUP    = 0x2,
  INPUT_PULLDOWN  = 0x3,
+  OUTPUT_2MA      = 0x4,
+  OUTPUT_4MA      = 0x5,
+  OUTPUT_8MA      = 0x6,
+  OUTPUT_12MA     = 0x7,
 } PinMode;

 typedef enum {
@@ -110,11 +110,23 @@ typedef const void* uint_farptr_t;
 #define pgm_read_ptr(addr) (*(void *const *)(addr))
 #else
 // Supports misaligned addresses
-#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
-#define pgm_read_word(addr) ((unsigned short)(pgm_read_byte((intptr_t)addr) | (pgm_read_byte((intptr_t)addr + 1) << 8)))
-#define pgm_read_dword(addr) ((unsigned long)(pgm_read_byte((intptr_t)addr) | (pgm_read_byte((intptr_t)addr + 1) << 8)) | \
-                                             (pgm_read_byte((intptr_t)addr + 2) << 16) | (pgm_read_byte((intptr_t)addr + 3) << 24))
-#define pgm_read_ptr(addr) ((void *)pgm_read_dword(addr))
+#ifdef __cplusplus
+extern "C"{
+#endif
+static inline unsigned char pgm_read_byte(const void *addr) {
+    return *(const unsigned char *)(addr);
+}
+static inline unsigned short pgm_read_word(const void *addr) {
+    const unsigned char *a = (const unsigned char *)addr;
+    return pgm_read_byte(a) | ( pgm_read_byte(a + 1) << 8 );
+}
+static inline unsigned long pgm_read_dword(const void *addr) {
+    const unsigned char *a = (const unsigned char *)addr;
+    return pgm_read_byte(a) | ( pgm_read_byte(a + 1) << 8 ) | ( pgm_read_byte(a + 2) << 16 ) | ( pgm_read_byte(a + 3) << 24 );
+}
+static inline void *pgm_read_ptr(const void *addr) {
+    return (void*) pgm_read_dword(addr);
+}
 static inline float pgm_read_float(const void *addr) {
    union {
        void *p;
@@ -123,6 +135,10 @@ static inline float pgm_read_float(const void *addr) {
    x.p = pgm_read_ptr(addr);
    return x.f;
 }
+#ifdef __cplusplus
+}
+#endif
+
 #endif

 #define pgm_read_byte_near(addr) pgm_read_byte(addr)
@@ -41,7 +41,7 @@ void initVariant() { }
 // Optional 2nd core setup and loop
 extern void setup1() __attribute__((weak));
 extern void loop1() __attribute__((weak));
-static void main1() {
+extern "C" void main1() {
    rp2040.fifo.registerCore();
    if (setup1) {
        setup1();
@@ -61,6 +61,7 @@ extern "C" int main() {
    mutex_init(&_pioMutex);
    initVariant();

+#ifndef NO_USB
 #ifdef USE_TINYUSB
    TinyUSB_Device_Init(0);

@@ -72,11 +73,13 @@ extern "C" int main() {
    Serial.begin(115200);
 #endif
 #endif
-
-#if defined DEBUG_RP2040_PORT
-    DEBUG_RP2040_PORT.begin();
 #endif

+#if defined DEBUG_RP2040_PORT
+    DEBUG_RP2040_PORT.begin(115200);
+#endif
+
+#ifndef NO_USB
    if (setup1 || loop1) {
        rp2040.fifo.begin(2);
        multicore_launch_core1(main1);
@@ -84,6 +87,7 @@ extern "C" int main() {
        rp2040.fifo.begin(1);
    }
    rp2040.fifo.registerCore();
+#endif

    setup();
    while (true) {
@@ -0,0 +1,109 @@
+; pio_uart for the Raspberry Pi Pico RP2040
+;
+; Based loosely off of the uart_rx/_tx examples in the pico-examples repo,
+; but heavily modified and optimized to not require changing the PIO
+; clocks so that Tone and Servo won't be affected, and multiple different
+; PIO ports can be run at different baud at the same time.
+;
+; Copyright (c) 2021 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
+
+
+
+.program pio_tx
+.side_set 1 opt
+
+; We shift out the start and stop bit as part of the FIFO
+    set x, 9
+
+    pull               side 1 ; Force stop bit
+
+; 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_gpio_init(pio, pin_tx);
+
+    pio_sm_config c = pio_tx_program_get_default_config(offset);
+
+    // OUT shifts to right, no autopull
+    sm_config_set_out_shift(&c, true, false, 32);
+
+    // We are mapping both OUT and side-set to the same pin, because sometimes
+    // we need to assert user data onto the pin (with OUT) and sometimes
+    // assert constant values (start/stop bit)
+    sm_config_set_out_pins(&c, pin_tx, 1);
+    sm_config_set_sideset_pins(&c, pin_tx);
+
+    // We only need TX, so get an 8-deep FIFO!
+    sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
+
+    pio_sm_init(pio, sm, offset, &c);
+}
+
+%}
+
+
+.program pio_rx
+
+; 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 0 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);
+    pio_gpio_init(pio, pin);
+    gpio_pull_up(pin);
+
+    pio_sm_config c = pio_rx_program_get_default_config(offset);
+    sm_config_set_in_pins(&c, pin); // for WAIT, IN
+    sm_config_set_jmp_pin(&c, pin); // for JMP
+    // Shift to right, autopull disabled
+    sm_config_set_in_shift(&c, true, false, 32);
+
+    pio_sm_init(pio, sm, offset, &c);
+}
+
+%}
@@ -0,0 +1,107 @@
+// -------------------------------------------------- //
+// This file is autogenerated by pioasm; do not edit! //
+// -------------------------------------------------- //
+
+#if !PICO_NO_HARDWARE
+#include "hardware/pio.h"
+#endif
+
+// ------ //
+// pio_tx //
+// ------ //
+
+#define pio_tx_wrap_target 0
+#define pio_tx_wrap 5
+
+static const uint16_t pio_tx_program_instructions[] = {
+    //     .wrap_target
+    0xe029, //  0: set    x, 9
+    0x98a0, //  1: pull   block           side 1
+    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_program = {
+    .instructions = pio_tx_program_instructions,
+    .length = 6,
+    .origin = -1,
+};
+
+static inline pio_sm_config pio_tx_program_get_default_config(uint offset) {
+    pio_sm_config c = pio_get_default_sm_config();
+    sm_config_set_wrap(&c, offset + pio_tx_wrap_target, offset + pio_tx_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_gpio_init(pio, pin_tx);
+    pio_sm_config c = pio_tx_program_get_default_config(offset);
+    // OUT shifts to right, no autopull
+    sm_config_set_out_shift(&c, true, false, 32);
+    // We are mapping both OUT and side-set to the same pin, because sometimes
+    // we need to assert user data onto the pin (with OUT) and sometimes
+    // assert constant values (start/stop bit)
+    sm_config_set_out_pins(&c, pin_tx, 1);
+    sm_config_set_sideset_pins(&c, pin_tx);
+    // We only need TX, so get an 8-deep FIFO!
+    sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_TX);
+    pio_sm_init(pio, sm, offset, &c);
+}
+
+#endif
+
+// ------ //
+// pio_rx //
+// ------ //
+
+#define pio_rx_wrap_target 0
+#define pio_rx_wrap 6
+
+static const uint16_t pio_rx_program_instructions[] = {
+    //     .wrap_target
+    0xe032, //  0: set    x, 18
+    0x2020, //  1: wait   0 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_program = {
+    .instructions = pio_rx_program_instructions,
+    .length = 7,
+    .origin = -1,
+};
+
+static inline pio_sm_config pio_rx_program_get_default_config(uint offset) {
+    pio_sm_config c = pio_get_default_sm_config();
+    sm_config_set_wrap(&c, offset + pio_rx_wrap_target, offset + pio_rx_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);
+    pio_gpio_init(pio, pin);
+    gpio_pull_up(pin);
+    pio_sm_config c = pio_rx_program_get_default_config(offset);
+    sm_config_set_in_pins(&c, pin); // for WAIT, IN
+    sm_config_set_jmp_pin(&c, pin); // for JMP
+    // Shift to right, autopull disabled
+    sm_config_set_in_shift(&c, true, false, 32);
+    pio_sm_init(pio, sm, offset, &c);
+}
+
+#endif
+
@@ -30,6 +30,8 @@ static uint32_t analogScale = 255;
 static uint16_t analogFreq = 1000;
 static bool pwmInitted = false;
 static bool adcInitted = false;
+static uint16_t analogWritePseudoScale = 1;
+static uint16_t analogWriteSlowScale = 1;

 auto_init_mutex(_dacMutex);

@@ -77,6 +79,21 @@ extern "C" void analogWrite(pin_size_t pin, int val) {
        return;
    }
    if (!pwmInitted) {
+        // For low frequencies, we need to scale the output max value up to achieve lower periods
+        analogWritePseudoScale = 1;
+        while (((clock_get_hz(clk_sys) / (float)(analogScale * analogFreq)) > 255.0) && (analogScale < 32678)) {
+            analogWritePseudoScale++;
+            analogScale *= 2;
+            DEBUGCORE("Adjusting analogWrite values PS=%d, scale=%d\n", analogWritePseudoScale, analogScale);
+        }
+        // For high frequencies, we need to scale the output max value down to actually hit the frequency target
+        analogWriteSlowScale = 1;
+        while (((clock_get_hz(clk_sys) / (float)(analogScale * analogFreq)) < 2.0) && (analogScale > 32)) {
+            analogWriteSlowScale++;
+            analogScale /= 2;
+            DEBUGCORE("Adjusting analogWrite values SS=%d, scale=%d\n", analogWriteSlowScale, analogScale);
+        }
+
        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);
@@ -86,6 +103,9 @@ extern "C" void analogWrite(pin_size_t pin, int val) {
        pwmInitted = true;
    }

+    val <<= analogWritePseudoScale;
+    val >>= analogWriteSlowScale;
+
    if (val < 0) {
        val = 0;
    } else if ((uint32_t)val > analogScale) {
@@ -97,11 +117,15 @@ extern "C" void analogWrite(pin_size_t pin, int val) {
 }

 auto_init_mutex(_adcMutex);
+static int _readBits = 10;

 extern "C" int analogRead(pin_size_t pin) {
    CoreMutex m(&_adcMutex);

-    if ((pin < A0) || (pin > A3) || !m) {
+    pin_size_t maxPin = max(A0, A3);
+    pin_size_t minPin = min(A0, A3);
+
+    if ((pin < minPin) || (pin > maxPin) || !m) {
        DEBUGCORE("ERROR: Illegal analogRead pin (%d)\n", pin);
        return 0;
    }
@@ -109,8 +133,8 @@ extern "C" int analogRead(pin_size_t pin) {
        adc_init();
    }
    adc_gpio_init(pin);
-    adc_select_input(pin - A0);
-    return adc_read();
+    adc_select_input(pin - minPin);
+    return (_readBits < 12) ? adc_read() >> (12 - _readBits) : adc_read() << (_readBits - 12);
 }

 extern "C" float analogReadTemp() {
@@ -130,3 +154,10 @@ extern "C" float analogReadTemp() {
    float t = 27.0f - ((v * 3.3f / 4096.0f) - 0.706f) / 0.001721f; // From the datasheet
    return t;
 }
+
+extern "C" void analogReadResolution(int bits) {
+    CoreMutex m(&_adcMutex);
+    if (m && ((bits > 0) && (bits < 32))) {
+        _readBits = bits;
+    }
+}
@@ -28,6 +28,7 @@ extern "C" void pinMode(pin_size_t ulPin, PinMode ulMode) {
    case INPUT:
        gpio_init(ulPin);
        gpio_set_dir(ulPin, false);
+        gpio_disable_pulls(ulPin);
        break;
    case INPUT_PULLUP:
        gpio_init(ulPin);
@@ -42,7 +43,24 @@ extern "C" void pinMode(pin_size_t ulPin, PinMode ulMode) {
        gpio_put(ulPin, 1);
        break;
    case OUTPUT:
+    case OUTPUT_4MA:
        gpio_init(ulPin);
+        gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_4MA);
+        gpio_set_dir(ulPin, true);
+        break;
+    case OUTPUT_2MA:
+        gpio_init(ulPin);
+        gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_2MA);
+        gpio_set_dir(ulPin, true);
+        break;
+    case OUTPUT_8MA:
+        gpio_init(ulPin);
+        gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_8MA);
+        gpio_set_dir(ulPin, true);
+        break;
+    case OUTPUT_12MA:
+        gpio_init(ulPin);
+        gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_12MA);
        gpio_set_dir(ulPin, true);
        break;
    default:
@@ -38,7 +38,7 @@ extern "C" unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeo
    }

    // Wait for assert
-    while ((!!gpio_get(pin) != !state) && (time_us_64() < abort));
+    while ((!!gpio_get(pin) != !!state) && (time_us_64() < abort));
    uint64_t begin = time_us_64();
    if (begin >= abort) {
        return 0;
@@ -20,6 +20,8 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
   Installation <install>
   IDE Menus <ide>

+   Platform.IO Integration <platformio>
+
   Pin (Re)Assignment <pins>

   Analog I/O <analog>
@@ -27,6 +29,7 @@ For the latest version, always check https://github.com/earlephilhower/arduino-p
   EEPROM <eeprom>
   I2S Audio <i2s>
   Serial USB and UARTs <serial>
+   "Software Serial" PIO UART <piouart>
   Servo <servo>
   SPI <spi>
   Wire(I2C) <wire>
@@ -135,6 +135,25 @@ 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.

-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.
+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.
+
+To set up user-level access to all CMSIS-DAP adapters on Ubuntu (and other OSes which use `udev`):
+
+.. code::
+
+        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 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, 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".
@@ -41,6 +41,12 @@ void rp2040.resumeOtherCore()

 Resumes processing in the other core, where it left off.

+
+void rp2040.restartCore1()
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Hard resets Core1 from Core 0 and restarts its operation from ``setup1()``.
+
 Communicating Between Cores
 ---------------------------

@@ -50,23 +56,23 @@ use the following functions to access a software-managed, multicore safe
 FIFO.

 void rp2040.fifo.push(uint32_t)
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Pushes a value to the other core.  Will block if the FIFO is full.

 bool rp2040.fifo.push_nb(uint32_t)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Pushes a value to the other core.  If the FIFO is full, returns ``false``
 immediately and doesn't block.  If the push is successful, returns ``true``.

 uint32_t rp2040.fifo.pop()
-~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~

 Reads a value from this core's FIFO.  Blocks until one is available.

 bool rp2040.fifo.pop_nb(uint32_t *dest)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 Reads a value from this core's FIFO and places it in dest.  Will return
 ``true`` if successful, or ``false`` if the pop would block.
@@ -26,6 +26,8 @@ Serial1 (UART0), Serial2 (UART1)

        ::setRX(pin)
        ::setTX(pin)
+        ::setRTS(pin)
+        ::setCTS(pin)

 SPI (SPI0), SPI1 (SPI1)
 -----------------------
@@ -33,6 +35,7 @@ SPI (SPI0), SPI1 (SPI1)
 .. code:: cpp

        ::setSCK(pin)
+        ::setCS(pin)
        ::setRX(pin)
        ::setTX(pin)

@@ -58,3 +61,7 @@ it use a non-default pinout with a simple call
        SD.begin(5);
    }

+Pad Strength
+============
+
+The Raspberry Pi Pico has the ability to set the current that a pin (actually the pad associated with it) is capable of supplying. The current can be set to values of 2mA, 4mA, 8mA and 12mA. By default, on a reset, the setting is 4mA. A `pinMode(x, OUTPUT)`, where `x` is the pin number, is also the default setting. 4 settings have been added for use with `pinMode`: `OUTPUT_2MA`, `OUTPUT_4MA`, which has the same behavior as `OUTPUT`, `OUTPUT_8MA` and `OUTPUT_12MA`.
@@ -0,0 +1,23 @@
+"SoftwareSerial" PIO-based UART
+================================
+
+Equivalent to the Arduino SoftwareSerial library, an emulated UART using
+one or two PIO state machines is included in the Arduino-Pico core.  This
+allows for up to 8 additional serial ports to be run from the RP2040 without
+requiring additional CPU resources.
+
+Instantiate a ``SerialPIO(txpin, rxpin, fifosize)`` object in your sketch and then
+use it the same as any other serial port.  Even, odd, and no parity modes
+are supported, as well as data sizes from 5- to 8-bits.  Fifosize, if not
+specified, defaults to 32 bytes.
+
+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 );
+
+For detailed information about the Serial ports, see the
+Arduino `Serial Reference <https://www.arduino.cc/reference/en/language/functions/communication/serial/>`_ .
@@ -0,0 +1,219 @@
+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 [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.
+
+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 soon.
+
+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. 
+You *also* need to inject two PlatformIO packages, one for the compiler toolchain and one for the Arduino core package.
+
+.. code:: ini
+
+    [env:pico]
+    platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+    board = pico
+    framework = arduino
+    ; 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
+    
+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.
+
+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 (e.g. the standard
+``board = pico``), 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>`__.
+
+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
+
+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``.
+
+
+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://`` pseudo-protocol can also be used instead of ``https://`` to point to a
+local copy of the core (with e.g. some modifications) on disk.
+
+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_build.core = earlephilhower
+    board_build.filesystem_size = 0.5m
+    ; 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
+
+
+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.
@@ -24,5 +24,23 @@ Configure their pins using the ``setXXX`` calls prior to calling ``begin()``
        Serial1.setTX(pin);
        Serial1.begin(baud);

+The size of the receive FIFO may also be adjusted from the default 32 bytes by
+using the ``setFIFOSize`` call prior to calling ``begin()``
+
+.. code:: cpp
+        Serial1.setFIFOSize(128);
+        Serial1.begin(baud);
+
+The FIFO is normally handled via an interrupt, which reduced CPU load and
+makes it less likely to lose characters.  However, the FIFO introduces up
+to 32 bit-times of delay before serial data is available to the application.
+
+For applications where this is an issue (i.e. very low baud), use
+``setPollingMode(true)`` before calling ``begin()``
+
+.. code:: cpp
+        Serial1.setPollingMode(true);
+        Serial1.begin(110)
+
 For detailed information about the Serial ports, see the
 Arduino `Serial Reference <https://www.arduino.cc/reference/en/language/functions/communication/serial/>`_ .
@@ -9,12 +9,35 @@
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
-setup1  KEYWORD2
-loop2   KEYWORD2
+
+setup1	KEYWORD2
+loop1	KEYWORD2
+
 analogWriteFreq	KEYWORD2
 analogWriteRange	KEYWORD2
-analogWriteResolution KEYWORD2
+analogWriteResolution	KEYWORD2

-######################################
-# Constants (LITERAL1)
-#######################################
+push	KEYWORD2
+push_nb	KEYWORD2
+pop	KEYWORD2
+pop_nb	KEYWORD2
+
+rp2040	KEYWORD2
+RP2040	KEYWORD2
+usToPIOCycles	KEYWORD2
+f_cpu	KEYWORD2
+getCycleCount	KEYWORD2
+getCycleCount64	KEYWORD2
+idleOtherCore	KEYWORD2
+resumeOtherCore	KEYWORD2
+
+PIOProgram	KEYWORD2
+prepare	KEYWORD2
+SerialPIO	KEYWORD2
+setFIFOSize	KEYWORD2
+setPollingMode	KEYWORD2
+
+OUTPUT_2MA	LITERAL1
+OUTPUT_4MA	LITERAL1
+OUTPUT_8MA	LITERAL1
+OUTPUT_12MA	LITERAL1
@@ -24,7 +24,7 @@
 MEMORY
 {
    FLASH(rx) : ORIGIN = 0x10000000, LENGTH = __FLASH_LENGTH__
-    RAM(rwx) : ORIGIN =  0x20000000, LENGTH = 256k
+    RAM(rwx) : ORIGIN =  0x20000000, LENGTH = __RAM_LENGTH__
    SCRATCH_X(rwx) : ORIGIN = 0x20040000, LENGTH = 4k
    SCRATCH_Y(rwx) : ORIGIN = 0x20041000, LENGTH = 4k
 }
@@ -12,8 +12,8 @@
 #define _PICO_VERSION_H

 #define PICO_SDK_VERSION_MAJOR    1
-#define PICO_SDK_VERSION_MINOR    2
+#define PICO_SDK_VERSION_MINOR    3
 #define PICO_SDK_VERSION_REVISION 0
-#define PICO_SDK_VERSION_STRING   "1.2.0"
+#define PICO_SDK_VERSION_STRING   "1.3.0"

 #endif
@@ -1,13 +1,11 @@
 -iwithprefixbefore/cores/rp2040/api/deprecated-avr-comp/
 -iwithprefixbefore/lib/pico_base/
-iwithprefixbefore/pico-examples/build/generated/pico_base
 -iwithprefixbefore/pico-extras/src/common/pico_audio/include
 -iwithprefixbefore/pico-extras/src/common/pico_util_buffer/include
 -iwithprefixbefore/pico-extras/src/rp2_common/pico_audio_i2s/include
 -iwithprefixbefore/pico-sdk/lib/tinyusb/src/
 -iwithprefixbefore/pico-sdk/src/boards/include
 -iwithprefixbefore/pico-sdk/src/common/pico_base/include
-iwithprefixbefore/pico-sdk/src/common/pico_base/include/
 -iwithprefixbefore/pico-sdk/src/common/pico_binary_info/include
 -iwithprefixbefore/pico-sdk/src/common/pico_bit_ops/include
 -iwithprefixbefore/pico-sdk/src/common/pico_divider/include
@@ -16,19 +14,23 @@
 -iwithprefixbefore/pico-sdk/src/common/pico_time/include
 -iwithprefixbefore/pico-sdk/src/common/pico_util/include
 -iwithprefixbefore/pico-sdk/src/rp2040/hardware_regs/include
-iwithprefixbefore/pico-sdk/src/rp2040/hardware_regs/include/
-iwithprefixbefore/pico-sdk/src/rp2040/hardware_regs/include/
 -iwithprefixbefore/pico-sdk/src/rp2040/hardware_structs/include
+-iwithprefixbefore/pico-sdk/src/rp2_common/cmsis/include
+-iwithprefixbefore/pico-sdk/src/rp2_common/cmsis/stub/CMSIS/Core/Include
+-iwithprefixbefore/pico-sdk/src/rp2_common/cmsis/stub/CMSIS/Device/RaspberryPi/RP2040/Include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_adc/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_base/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_claim/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_clocks/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_divider/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_dma/include
+-iwithprefixbefore/pico-sdk/src/rp2_common/hardware_exception/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_flash/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_gpio/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_i2c/include
+-iwithprefixbefore/pico-sdk/src/rp2_common/hardware_interp/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_irq/include
+-iwithprefixbefore/pico-sdk/src/rp2_common/hardware_rtc/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_pio/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_pll/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_pwm/include
@@ -36,7 +38,6 @@
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_spi/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_sync/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_timer/include
-iwithprefixbefore/pico-sdk/src/rp2_common/hardware_timer/include/
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_uart/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_vreg/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/hardware_watchdog/include
@@ -46,12 +47,9 @@
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_float/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_int64_ops/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_multicore/include
-iwithprefixbefore/pico-sdk/src/rp2_common/pico_multicore/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_platform/include
-iwithprefixbefore/pico-sdk/src/rp2_common/pico_platform/include/
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_printf/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_runtime/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_stdio/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_stdio_uart/include
-iwithprefixbefore/pico-sdk/src/rp2_common/pico_stdio_usb/include
 -iwithprefixbefore/pico-sdk/src/rp2_common/pico_unique_id/include
@@ -13,6 +13,25 @@
 // How large of a file to test
 #define TESTSIZEKB 256

+// Format speed in bytes/second.  Static buffer so not re-entrant safe
+const char *rate(unsigned long start, unsigned long stop, unsigned long bytes) {
+  static char buff[64];
+  if (stop == start) {
+    strcpy_P(buff, PSTR("Inf b/s"));
+  } else {
+    unsigned long delta = stop - start;
+    float r = 1000.0 * (float)bytes / (float)delta;
+    if (r >= 1000000.0) {
+      sprintf_P(buff, PSTR("%0.2f MB/s"), r / 1000000.0);
+    } else if (r >= 1000.0) {
+      sprintf_P(buff, PSTR("%0.2f KB/s"), r / 1000.0);
+    } else {
+      sprintf_P(buff, PSTR("%d bytes/s"), (int)r);
+    }
+  }
+  return buff;
+}
+
 void DoTest(FS *fs) {
  if (!fs->format()) {
    Serial.printf("Unable to format(), aborting\n");
@@ -29,7 +48,7 @@ void DoTest(FS *fs) {
  }

  Serial.printf("Creating %dKB file, may take a while...\n", TESTSIZEKB);
-  long start = millis();
+  unsigned long start = millis();
  File f = fs->open("/testwrite.bin", "w");
  if (!f) {
    Serial.printf("Unable to open file for writing, aborting\n");
@@ -41,11 +60,11 @@ void DoTest(FS *fs) {
    }
  }
  f.close();
-  long stop = millis();
-  Serial.printf("==> Time to write %dKB in 256b chunks = %ld milliseconds\n", TESTSIZEKB, stop - start);
+  unsigned long stop = millis();
+  Serial.printf("==> Time to write %dKB in 256b chunks = %lu milliseconds\n", TESTSIZEKB, stop - start);

  f = fs->open("/testwrite.bin", "r");
-  Serial.printf("==> Created file size = %d\n", f.size());
+  Serial.printf("==> Created file size = %zu\n", f.size());
  f.close();

  Serial.printf("Reading %dKB file sequentially in 256b chunks\n", TESTSIZEKB);
@@ -58,7 +77,7 @@ void DoTest(FS *fs) {
  }
  f.close();
  stop = millis();
-  Serial.printf("==> Time to read %dKB sequentially in 256b chunks = %ld milliseconds = %ld bytes/s\n", TESTSIZEKB, stop - start, TESTSIZEKB * 1024 / (stop - start) * 1000);
+  Serial.printf("==> Time to read %dKB sequentially in 256b chunks = %lu milliseconds = %s\n", TESTSIZEKB, stop - start, rate(start, stop, TESTSIZEKB * 1024));

  Serial.printf("Reading %dKB file MISALIGNED in flash and RAM sequentially in 256b chunks\n", TESTSIZEKB);
  start = millis();
@@ -71,8 +90,7 @@ void DoTest(FS *fs) {
  }
  f.close();
  stop = millis();
-  Serial.printf("==> Time to read %dKB sequentially MISALIGNED in flash and RAM in 256b chunks = %ld milliseconds = %ld bytes/s\n", TESTSIZEKB, stop - start, TESTSIZEKB * 1024 / (stop - start) * 1000);
-
+  Serial.printf("==> Time to read %dKB sequentially MISALIGNED in flash and RAM in 256b chunks = %lu milliseconds = %s\n", TESTSIZEKB, stop - start, rate(start, stop, TESTSIZEKB * 1024));

  Serial.printf("Reading %dKB file in reverse by 256b chunks\n", TESTSIZEKB);
  start = millis();
@@ -91,8 +109,7 @@ void DoTest(FS *fs) {
  }
  f.close();
  stop = millis();
-  Serial.printf("==> Time to read %dKB in reverse in 256b chunks = %ld milliseconds = %ld bytes/s\n", TESTSIZEKB, stop - start, TESTSIZEKB * 1024 / (stop - start) * 1000);
-
+  Serial.printf("==> Time to read %dKB in reverse in 256b chunks = %lu milliseconds = %s\n", TESTSIZEKB, stop - start, rate(start, stop, TESTSIZEKB * 1024));

  Serial.printf("Writing 64K file in 1-byte chunks\n");
  start = millis();
@@ -102,7 +119,7 @@ void DoTest(FS *fs) {
  }
  f.close();
  stop = millis();
-  Serial.printf("==> Time to write 64KB in 1b chunks = %ld milliseconds = %ld bytes/s\n", stop - start, 65536 / (stop - start) * 1000);
+  Serial.printf("==> Time to write 64KB in 1b chunks = %lu milliseconds = %s\n", stop - start, rate(start, stop, 65536));

  Serial.printf("Reading 64K file in 1-byte chunks\n");
  start = millis();
@@ -113,9 +130,7 @@ void DoTest(FS *fs) {
  }
  f.close();
  stop = millis();
-  Serial.printf("==> Time to read 64KB in 1b chunks = %ld milliseconds = %ld bytes/s\n", stop - start, 65536 / (stop - start) * 1000);
-
-
+  Serial.printf("==> Time to read 64KB in 1b chunks = %lu milliseconds = %s\n", stop - start, rate(start, stop, 65536));
 }

 void setup() {
@@ -124,6 +139,7 @@ void setup() {
  Serial.printf("Beginning test\n");
  Serial.flush();
  DoTest(&TESTFS);
+  Serial.println("done");
 }

 void loop() {
@@ -176,6 +176,9 @@ public:
    }

    bool begin() override {
+        if (_mounted) {
+            return true;
+        }
        if (_size <= 0) {
            DEBUGV("LittleFS size is <= zero");
            return false;
@@ -0,0 +1,83 @@
+/*
+  This example reads audio data from the on-board PDM microphones, and prints
+  out the samples to the Serial console. The Serial Plotter built into the
+  Arduino IDE can be used to plot the audio data (Tools -> Serial Plotter)
+
+  Circuit:
+  - Arduino Nano 33 BLE board, or
+  - Arduino Nano RP2040 Connect, or
+  - Arduino Portenta H7 board plus Portenta Vision Shield
+
+  This example code is in the public domain.
+*/
+
+#include <PDM.h>
+
+// default number of output channels
+static const char channels = 1;
+
+// default PCM output frequency
+static const int frequency = 16000;
+
+// Buffer to read samples into, each sample is 16-bits
+short sampleBuffer[512];
+
+// Number of audio samples read
+volatile int samplesRead;
+
+void setup() {
+  Serial.begin(9600);
+  while (!Serial);
+
+  // Configure the data receive callback
+  PDM.onReceive(onPDMdata);
+
+  // Optionally set the gain
+  // Defaults to 20 on the BLE Sense and -10 on the Portenta Vision Shield
+  // PDM.setGain(30);
+
+  // Initialize PDM with:
+  // - one channel (mono mode)
+  // - a 16 kHz sample rate for the Arduino Nano 33 BLE Sense
+  // - a 32 kHz or 64 kHz sample rate for the Arduino Portenta Vision Shield
+  if (!PDM.begin(channels, frequency)) {
+    Serial.println("Failed to start PDM!");
+    while (1);
+  }
+}
+
+void loop() {
+  // Wait for samples to be read
+  if (samplesRead) {
+
+    // Print samples to the serial monitor or plotter
+    for (int i = 0; i < samplesRead; i++) {
+      if(channels == 2) {
+        Serial.print("L:");
+        Serial.print(sampleBuffer[i]);
+        Serial.print(" R:");
+        i++;
+      }
+      Serial.println(sampleBuffer[i]);
+    }
+
+    // Clear the read count
+    samplesRead = 0;
+  }
+}
+
+/**
+ * Callback function to process the data from the PDM microphone.
+ * NOTE: This callback is executed as part of an ISR.
+ * Therefore using `Serial` to print messages inside this function isn't supported.
+ * */
+void onPDMdata() {
+  // Query the number of available bytes
+  int bytesAvailable = PDM.available();
+
+  // Read into the sample buffer
+  PDM.read(sampleBuffer, bytesAvailable);
+
+  // 16-bit, 2 bytes per sample
+  samplesRead = bytesAvailable / 2;
+}
@@ -0,0 +1,27 @@
+#######################################
+# Syntax Coloring Map PDM
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+PDM	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+begin	KEYWORD2
+end	KEYWORD2
+
+available	KEYWORD2
+read	KEYWORD2
+
+onReceive	KEYWORD2
+
+setGain	KEYWORD2
+setBufferSize	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
@@ -0,0 +1,9 @@
+name=PDM
+version=1.0
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=Enables the communication with devices that use the PDM Bus. Specific implementation for nRF52.
+paragraph=
+category=Communication
+url=
+architectures=rp2040
@@ -0,0 +1,74 @@
+/*
+  Copyright (c) 2019 Arduino LLC.  All right reserved.
+
+  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
+*/
+
+#ifndef _PDM_H_INCLUDED
+#define _PDM_H_INCLUDED
+
+#include <Arduino.h>
+//#include <pinDefinitions.h>
+
+#include "utility/PDMDoubleBuffer.h"
+
+class PDMClass
+{
+public:
+  PDMClass(int dinPin, int clkPin, int pwrPin);
+  virtual ~PDMClass();
+
+  int begin(int channels, int sampleRate);
+  void end();
+
+  virtual int available();
+  virtual int read(void* buffer, size_t size);
+
+  void onReceive(void(*)(void));
+
+  //PORTENTA_H7 min -12 max 51
+  //NANO 33 BLE SENSe min 0 max 80
+  void setGain(int gain);
+  void setBufferSize(int bufferSize);
+  size_t getBufferSize();
+
+// private:
+  void IrqHandler(bool halftranfer);
+
+private:
+  int _dinPin;
+  int _clkPin;
+  int _pwrPin;
+
+  int _channels;
+  int _samplerate;
+
+  int _gain;
+  int _init;
+
+// Hardware peripherals used
+  uint _dmaChannel;
+  PIO _pio;
+  int _smIdx;
+  int _pgmOffset;
+
+  PDMDoubleBuffer _doubleBuffer;
+
+  void (*_onReceive)(void);
+};
+#ifdef PIN_PDM_DIN
+extern PDMClass PDM;
+#endif
+#endif
@@ -0,0 +1,313 @@
+/**
+ *******************************************************************************
+ * @file    OpenPDMFilter.c
+ * @author  CL
+ * @version V1.0.0
+ * @date    9-September-2015
+ * @brief   Open PDM audio software decoding Library.   
+ *          This Library is used to decode and reconstruct the audio signal
+ *          produced by ST MEMS microphone (MP45Dxxx, MP34Dxxx). 
+ *******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT 2018 STMicroelectronics</center></h2>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************
+ */
+
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "OpenPDMFilter.h"
+
+
+/* Variables -----------------------------------------------------------------*/
+
+uint32_t div_const = 0;
+int64_t sub_const = 0;
+uint32_t sinc[DECIMATION_MAX * SINCN];
+uint32_t sinc1[DECIMATION_MAX];
+uint32_t sinc2[DECIMATION_MAX * 2];
+uint32_t coef[SINCN][DECIMATION_MAX];
+#ifdef USE_LUT
+int32_t lut[256][DECIMATION_MAX / 8][SINCN];
+#endif
+
+
+/* Functions -----------------------------------------------------------------*/
+
+#ifdef USE_LUT
+int32_t filter_table_mono_64(uint8_t *data, uint8_t sincn)
+{
+  return (int32_t)
+    lut[data[0]][0][sincn] +
+    lut[data[1]][1][sincn] +
+    lut[data[2]][2][sincn] +
+    lut[data[3]][3][sincn] +
+    lut[data[4]][4][sincn] +
+    lut[data[5]][5][sincn] +
+    lut[data[6]][6][sincn] +
+    lut[data[7]][7][sincn];
+}
+int32_t filter_table_stereo_64(uint8_t *data, uint8_t sincn)
+{
+  return (int32_t)
+    lut[data[0]][0][sincn] +
+    lut[data[2]][1][sincn] +
+    lut[data[4]][2][sincn] +
+    lut[data[6]][3][sincn] +
+    lut[data[8]][4][sincn] +
+    lut[data[10]][5][sincn] +
+    lut[data[12]][6][sincn] +
+    lut[data[14]][7][sincn];
+}
+int32_t filter_table_mono_128(uint8_t *data, uint8_t sincn)
+{
+  return (int32_t)
+    lut[data[0]][0][sincn] +
+    lut[data[1]][1][sincn] +
+    lut[data[2]][2][sincn] +
+    lut[data[3]][3][sincn] +
+    lut[data[4]][4][sincn] +
+    lut[data[5]][5][sincn] +
+    lut[data[6]][6][sincn] +
+    lut[data[7]][7][sincn] +
+    lut[data[8]][8][sincn] +
+    lut[data[9]][9][sincn] +
+    lut[data[10]][10][sincn] +
+    lut[data[11]][11][sincn] +
+    lut[data[12]][12][sincn] +
+    lut[data[13]][13][sincn] +
+    lut[data[14]][14][sincn] +
+    lut[data[15]][15][sincn];
+}
+int32_t filter_table_stereo_128(uint8_t *data, uint8_t sincn)
+{
+  return (int32_t)
+    lut[data[0]][0][sincn] +
+    lut[data[2]][1][sincn] +
+    lut[data[4]][2][sincn] +
+    lut[data[6]][3][sincn] +
+    lut[data[8]][4][sincn] +
+    lut[data[10]][5][sincn] +
+    lut[data[12]][6][sincn] +
+    lut[data[14]][7][sincn] +
+    lut[data[16]][8][sincn] +
+    lut[data[18]][9][sincn] +
+    lut[data[20]][10][sincn] +
+    lut[data[22]][11][sincn] +
+    lut[data[24]][12][sincn] +
+    lut[data[26]][13][sincn] +
+    lut[data[28]][14][sincn] +
+    lut[data[30]][15][sincn];
+}
+int32_t (* filter_tables_64[2]) (uint8_t *data, uint8_t sincn) = {filter_table_mono_64, filter_table_stereo_64};
+int32_t (* filter_tables_128[2]) (uint8_t *data, uint8_t sincn) = {filter_table_mono_128, filter_table_stereo_128};
+#else
+int32_t filter_table(uint8_t *data, uint8_t sincn, TPDMFilter_InitStruct *param)
+{
+  uint8_t c, i;
+  uint16_t data_index = 0;
+  uint32_t *coef_p = &coef[sincn][0];
+  int32_t F = 0;
+  uint8_t decimation = param->Decimation;
+  uint8_t channels = param->In_MicChannels;
+
+  for (i = 0; i < decimation; i += 8) {
+    c = data[data_index];
+    F += ((c >> 7)       ) * coef_p[i    ] +
+         ((c >> 6) & 0x01) * coef_p[i + 1] +
+         ((c >> 5) & 0x01) * coef_p[i + 2] +
+         ((c >> 4) & 0x01) * coef_p[i + 3] +
+         ((c >> 3) & 0x01) * coef_p[i + 4] +
+         ((c >> 2) & 0x01) * coef_p[i + 5] +
+         ((c >> 1) & 0x01) * coef_p[i + 6] +
+         ((c     ) & 0x01) * coef_p[i + 7];
+    data_index += channels;
+  }
+  return F;
+}
+#endif
+
+void convolve(uint32_t Signal[/* SignalLen */], unsigned short SignalLen,
+              uint32_t Kernel[/* KernelLen */], unsigned short KernelLen,
+              uint32_t Result[/* SignalLen + KernelLen - 1 */])
+{
+  uint16_t n;
+
+  for (n = 0; n < SignalLen + KernelLen - 1; n++)
+  {
+    unsigned short kmin, kmax, k;
+    
+    Result[n] = 0;
+    
+    kmin = (n >= KernelLen - 1) ? n - (KernelLen - 1) : 0;
+    kmax = (n < SignalLen - 1) ? n : SignalLen - 1;
+    
+    for (k = kmin; k <= kmax; k++) {
+      Result[n] += Signal[k] * Kernel[n - k];
+    }
+  }
+}
+
+void Open_PDM_Filter_Init(TPDMFilter_InitStruct *Param)
+{
+  uint16_t i, j;
+  int64_t sum = 0;
+
+  uint8_t decimation = Param->Decimation;
+
+  for (i = 0; i < SINCN; i++) {
+    Param->Coef[i] = 0;
+    Param->bit[i] = 0;
+  }
+  for (i = 0; i < decimation; i++) {
+    sinc1[i] = 1;
+  }
+
+  Param->OldOut = Param->OldIn = Param->OldZ = 0;
+  Param->LP_ALFA = (Param->LP_HZ != 0 ? (uint16_t) (Param->LP_HZ * 256 / (Param->LP_HZ + Param->Fs / (2 * 3.14159))) : 0);
+  Param->HP_ALFA = (Param->HP_HZ != 0 ? (uint16_t) (Param->Fs * 256 / (2 * 3.14159 * Param->HP_HZ + Param->Fs)) : 0);
+
+  Param->FilterLen = decimation * SINCN;       
+  sinc[0] = 0;
+  sinc[decimation * SINCN - 1] = 0;      
+  convolve(sinc1, decimation, sinc1, decimation, sinc2);
+  convolve(sinc2, decimation * 2 - 1, sinc1, decimation, &sinc[1]);     
+  for(j = 0; j < SINCN; j++) {
+    for (i = 0; i < decimation; i++) {
+      coef[j][i] = sinc[j * decimation + i];
+      sum += sinc[j * decimation + i];
+    }
+  }
+
+  sub_const = sum >> 1;
+  div_const = sub_const * Param->MaxVolume / 32768 / Param->filterGain;
+  div_const = (div_const == 0 ? 1 : div_const);
+
+#ifdef USE_LUT
+  /* Look-Up Table. */
+  uint16_t c, d, s;
+  for (s = 0; s < SINCN; s++)
+  {
+    uint32_t *coef_p = &coef[s][0];
+    for (c = 0; c < 256; c++)
+      for (d = 0; d < decimation / 8; d++)
+        lut[c][d][s] = ((c >> 7)       ) * coef_p[d * 8    ] +
+                       ((c >> 6) & 0x01) * coef_p[d * 8 + 1] +
+                       ((c >> 5) & 0x01) * coef_p[d * 8 + 2] +
+                       ((c >> 4) & 0x01) * coef_p[d * 8 + 3] +
+                       ((c >> 3) & 0x01) * coef_p[d * 8 + 4] +
+                       ((c >> 2) & 0x01) * coef_p[d * 8 + 5] +
+                       ((c >> 1) & 0x01) * coef_p[d * 8 + 6] +
+                       ((c     ) & 0x01) * coef_p[d * 8 + 7];
+  }
+#endif
+}
+
+void Open_PDM_Filter_64(uint8_t* data, int16_t* dataOut, uint16_t volume, TPDMFilter_InitStruct *Param)
+{
+  uint8_t i, data_out_index;
+  uint8_t channels = Param->In_MicChannels;
+  uint8_t data_inc = ((DECIMATION_MAX >> 4) * channels);
+  int64_t Z, Z0, Z1, Z2;
+  int64_t OldOut, OldIn, OldZ;
+
+  OldOut = Param->OldOut;
+  OldIn = Param->OldIn;
+  OldZ = Param->OldZ;
+
+#ifdef USE_LUT
+  uint8_t j = channels - 1;
+#endif
+
+  for (i = 0, data_out_index = 0; i < Param->nSamples; i++, data_out_index += channels) {
+#ifdef USE_LUT
+    Z0 = filter_tables_64[j](data, 0);
+    Z1 = filter_tables_64[j](data, 1);
+    Z2 = filter_tables_64[j](data, 2);
+#else
+    Z0 = filter_table(data, 0, Param);
+    Z1 = filter_table(data, 1, Param);
+    Z2 = filter_table(data, 2, Param);
+#endif
+
+    Z = Param->Coef[1] + Z2 - sub_const;
+    Param->Coef[1] = Param->Coef[0] + Z1;
+    Param->Coef[0] = Z0;
+
+    OldOut = (Param->HP_ALFA * (OldOut + Z - OldIn)) >> 8;
+    OldIn = Z;
+    OldZ = ((256 - Param->LP_ALFA) * OldZ + Param->LP_ALFA * OldOut) >> 8;
+
+    Z = OldZ * volume;
+    Z = RoundDiv(Z, div_const);
+    Z = SaturaLH(Z, -32700, 32700);
+
+    dataOut[data_out_index] = Z;
+    data += data_inc;
+  }
+
+  Param->OldOut = OldOut;
+  Param->OldIn = OldIn;
+  Param->OldZ = OldZ;
+}
+
+void Open_PDM_Filter_128(uint8_t* data, int16_t* dataOut, uint16_t volume, TPDMFilter_InitStruct *Param)
+{
+  uint8_t i, data_out_index;
+  uint8_t channels = Param->In_MicChannels;
+  uint8_t data_inc = ((DECIMATION_MAX >> 3) * channels);
+  int64_t Z, Z0, Z1, Z2;
+  int64_t OldOut, OldIn, OldZ;
+
+  OldOut = Param->OldOut;
+  OldIn = Param->OldIn;
+  OldZ = Param->OldZ;
+
+#ifdef USE_LUT
+  uint8_t j = channels - 1;
+#endif
+
+  for (i = 0, data_out_index = 0; i < Param->nSamples; i++, data_out_index += channels) {
+#ifdef USE_LUT
+    Z0 = filter_tables_128[j](data, 0);
+    Z1 = filter_tables_128[j](data, 1);
+    Z2 = filter_tables_128[j](data, 2);
+#else
+    Z0 = filter_table(data, 0, Param);
+    Z1 = filter_table(data, 1, Param);
+    Z2 = filter_table(data, 2, Param);
+#endif
+
+    Z = Param->Coef[1] + Z2 - sub_const;
+    Param->Coef[1] = Param->Coef[0] + Z1;
+    Param->Coef[0] = Z0;
+
+    OldOut = (Param->HP_ALFA * (OldOut + Z - OldIn)) >> 8;
+    OldIn = Z;
+    OldZ = ((256 - Param->LP_ALFA) * OldZ + Param->LP_ALFA * OldOut) >> 8;
+
+    Z = OldZ * volume;
+    Z = RoundDiv(Z, div_const);
+    Z = SaturaLH(Z, -32700, 32700);
+
+    dataOut[data_out_index] = Z;
+    data += data_inc;
+  }
+
+  Param->OldOut = OldOut;
+  Param->OldIn = OldIn;
+  Param->OldZ = OldZ;
+}
@@ -0,0 +1,99 @@
+/**
+ *******************************************************************************
+ * @file    OpenPDMFilter.h
+ * @author  CL
+ * @version V1.0.0
+ * @date    9-September-2015
+ * @brief   Header file for Open PDM audio software decoding Library.   
+ *          This Library is used to decode and reconstruct the audio signal
+ *          produced by ST MEMS microphone (MP45Dxxx, MP34Dxxx). 
+ *******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT 2018 STMicroelectronics</center></h2>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************
+ */
+
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+
+#ifndef __OPENPDMFILTER_H
+#define __OPENPDMFILTER_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+
+/* Includes ------------------------------------------------------------------*/
+
+#include <stdint.h>
+
+
+/* Definitions ---------------------------------------------------------------*/
+
+/*
+ * Enable to use a Look-Up Table to improve performances while using more FLASH
+ * and RAM memory.
+ * Note: Without Look-Up Table up to stereo@16KHz configuration is supported.
+ */
+#define USE_LUT
+
+#define SINCN            3
+#define DECIMATION_MAX 128
+
+#define HTONS(A) ((((uint16_t)(A) & 0xff00) >> 8) | \
+                 (((uint16_t)(A) & 0x00ff) << 8))
+#define RoundDiv(a, b)    (((a)>0)?(((a)+(b)/2)/(b)):(((a)-(b)/2)/(b)))
+#define SaturaLH(N, L, H) (((N)<(L))?(L):(((N)>(H))?(H):(N)))
+
+
+/* Types ---------------------------------------------------------------------*/
+
+typedef struct {
+  /* Public */
+  float LP_HZ;
+  float HP_HZ;
+  uint16_t Fs;
+  unsigned int nSamples;
+  uint8_t In_MicChannels;
+  uint8_t Out_MicChannels;
+  uint8_t Decimation;
+  uint8_t MaxVolume;
+  /* Private */
+  uint32_t Coef[SINCN];
+  uint16_t FilterLen;
+  int64_t OldOut, OldIn, OldZ;
+  uint16_t LP_ALFA;
+  uint16_t HP_ALFA;
+  uint16_t bit[5];
+  uint16_t byte;
+  uint16_t filterGain;
+} TPDMFilter_InitStruct;
+
+
+/* Exported functions ------------------------------------------------------- */
+
+void Open_PDM_Filter_Init(TPDMFilter_InitStruct *init_struct);
+void Open_PDM_Filter_64(uint8_t* data, int16_t* data_out, uint16_t mic_gain, TPDMFilter_InitStruct *init_struct);
+void Open_PDM_Filter_128(uint8_t* data, int16_t* data_out, uint16_t mic_gain, TPDMFilter_InitStruct *init_struct);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __OPENPDMFILTER_H
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
@@ -0,0 +1,211 @@
+
+
+#include "Arduino.h"
+#include "PDM.h"
+#include "OpenPDMFilter.h"
+
+extern "C" {
+#include "hardware/pio.h"
+#include "hardware/dma.h"
+#include "hardware/clocks.h"
+}
+#include "hardware/sync.h" 
+#include "pdm.pio.h"
+static PIOProgram _pdmPgm(&pdm_pio_program);
+
+// raw buffers contain PDM data
+#define RAW_BUFFER_SIZE 512 // should be a multiple of (decimation / 8)
+uint8_t rawBuffer0[RAW_BUFFER_SIZE];
+uint8_t rawBuffer1[RAW_BUFFER_SIZE];
+uint8_t* rawBuffer[2] = {rawBuffer0, rawBuffer1};
+volatile int rawBufferIndex = 0; 
+
+int decimation = 64;
+
+// final buffer is the one to be filled with PCM data
+int16_t* volatile finalBuffer;
+
+// OpenPDM filter used to convert PDM into PCM
+#define FILTER_GAIN     16
+TPDMFilter_InitStruct filter;
+
+extern "C" {
+  __attribute__((__used__)) void dmaHandler(void)
+  {
+    PDM.IrqHandler(true);
+  }
+}
+
+
+PDMClass::PDMClass(int dinPin, int clkPin, int pwrPin) :
+  _dinPin(dinPin),
+  _clkPin(clkPin),
+  _pwrPin(pwrPin),
+  _onReceive(NULL),
+  _gain(-1),
+  _channels(-1),
+  _samplerate(-1),
+  _init(-1),
+  _dmaChannel(0),
+  _pio(nullptr),
+  _smIdx(-1),
+  _pgmOffset(-1)
+{
+}
+
+PDMClass::~PDMClass()
+{
+}
+
+int PDMClass::begin(int channels, int sampleRate)
+{
+  //_channels = channels; // only one channel available
+
+  // clear the final buffers
+  _doubleBuffer.reset();
+  finalBuffer = (int16_t*)_doubleBuffer.data();
+  int finalBufferLength = _doubleBuffer.availableForWrite() / sizeof(int16_t);
+  _doubleBuffer.swap(0);
+
+  int rawBufferLength = RAW_BUFFER_SIZE / (decimation / 8);
+  // Saturate number of samples. Remaining bytes are dropped.
+  if (rawBufferLength > finalBufferLength) {
+    rawBufferLength = finalBufferLength;
+  }
+
+  /* Initialize Open PDM library */
+  filter.Fs = sampleRate;
+  filter.nSamples = rawBufferLength;
+  filter.LP_HZ = sampleRate/2;
+  filter.HP_HZ = 10;
+  filter.In_MicChannels = 1;
+  filter.Out_MicChannels = 1;
+  filter.Decimation = decimation;
+  if(_gain == -1) {
+    _gain = FILTER_GAIN;
+  }
+  filter.filterGain = _gain;
+  Open_PDM_Filter_Init(&filter);
+
+  // Configure PIO state machine
+  float clkDiv = (float)clock_get_hz(clk_sys) / sampleRate / decimation / 2; 
+
+  if (!_pdmPgm.prepare(&_pio, &_smIdx, &_pgmOffset)) {
+      // ERROR, no free slots
+      return -1;
+  }
+  pdm_pio_program_init(_pio, _smIdx, _pgmOffset, _clkPin, _dinPin, clkDiv);
+
+  // Wait for microphone 
+  delay(100);
+
+  // Configure DMA for transferring PIO rx buffer to raw buffers
+  _dmaChannel = dma_claim_unused_channel(false);
+  dma_channel_config c = dma_channel_get_default_config(_dmaChannel);
+  channel_config_set_read_increment(&c, false);
+  channel_config_set_write_increment(&c, true);
+  channel_config_set_dreq(&c, pio_get_dreq(_pio, _smIdx, false));
+  channel_config_set_transfer_data_size(&c, DMA_SIZE_8);
+
+  // Clear DMA interrupts
+  dma_hw->ints0 = 1u << _dmaChannel; 
+  // Enable DMA interrupts
+  dma_channel_set_irq0_enabled(_dmaChannel, true);
+  // Share but allocate a high priority to the interrupt
+  irq_add_shared_handler(DMA_IRQ_0, dmaHandler, 0);
+  irq_set_enabled(DMA_IRQ_0, true);
+
+  dma_channel_configure(_dmaChannel, &c,
+    rawBuffer[rawBufferIndex],        // Destinatinon pointer
+    &_pio->rxf[_smIdx],      // Source pointer
+    RAW_BUFFER_SIZE, // Number of transfers
+    true                // Start immediately
+  );
+
+  _init = 1;
+
+  return 1;
+}
+
+void PDMClass::end()
+{
+  dma_channel_abort(_dmaChannel);
+  pinMode(_clkPin, INPUT);
+}
+
+int PDMClass::available()
+{
+  //NVIC_DisableIRQ(DMA_IRQ_0n);
+  //uint32_t interrupts = save_and_disable_interrupts();
+	irq_set_enabled(DMA_IRQ_0, false);
+  size_t avail = _doubleBuffer.available();
+  irq_set_enabled(DMA_IRQ_0, true);
+  //restore_interrupts(interrupts);
+  //NVIC_EnableIRQ(DMA_IRQ_0n);
+  return avail;
+}
+
+int PDMClass::read(void* buffer, size_t size)
+{
+	irq_set_enabled(DMA_IRQ_0, false);
+  int read = _doubleBuffer.read(buffer, size);
+  irq_set_enabled(DMA_IRQ_0, true);
+  return read;
+}
+
+void PDMClass::onReceive(void(*function)(void))
+{
+  _onReceive = function;
+}
+
+void PDMClass::setGain(int gain)
+{
+  _gain = gain;
+  if(_init == 1) {
+    filter.filterGain = _gain;
+    Open_PDM_Filter_Init(&filter);
+  }
+}
+
+void PDMClass::setBufferSize(int bufferSize)
+{
+  _doubleBuffer.setSize(bufferSize);
+}
+
+void PDMClass::IrqHandler(bool halftranfer)
+{
+  static int cutSamples = 100;
+
+  // Clear the interrupt request.
+  dma_hw->ints0 = 1u << _dmaChannel; 
+  // Restart dma pointing to the other buffer 
+  int shadowIndex = rawBufferIndex ^ 1;
+  dma_channel_set_write_addr(_dmaChannel, rawBuffer[shadowIndex], true);
+
+  if (_doubleBuffer.available()) {
+    // buffer overflow, stop
+    return end();
+  }
+
+  // fill final buffer with PCM samples
+  Open_PDM_Filter_64(rawBuffer[rawBufferIndex], finalBuffer, 1, &filter);
+
+  if (cutSamples) {
+    memset(finalBuffer, 0, cutSamples);
+    cutSamples = 0;
+  }
+
+  // swap final buffer and raw buffers' indexes
+  finalBuffer = (int16_t*)_doubleBuffer.data();
+  _doubleBuffer.swap(filter.nSamples * sizeof(int16_t));
+  rawBufferIndex = shadowIndex;
+
+  if (_onReceive) {
+    _onReceive();
+  }
+}
+#ifdef PIN_PDM_DIN
+PDMClass PDM(PIN_PDM_DIN, PIN_PDM_CLK, -1);
+#endif // PIN_PDM_DIN
+
+
@@ -0,0 +1,42 @@
+
+.program pdm_pio
+.side_set 1
+.wrap_target
+
+  ; prova a cambiare edge
+
+  ;sample on falling edge
+  push iffull noblock  side 1 
+  ;nop  side 1 
+  ;nop  side 0 
+  in pins, 1  side 0 
+  ;nop side 0
+  
+.wrap
+
+% c-sdk {
+#include "hardware/gpio.h"
+
+static inline void pdm_pio_program_init(PIO pio, uint sm, uint offset, uint clkPin, uint dataPin, float clkDiv) {
+  pio_sm_config c = pdm_pio_program_get_default_config(offset);
+  sm_config_set_sideset(&c, 1, false, false);
+  //sm_config_set_in_shift(&c, false, true, 8);
+  sm_config_set_in_shift(&c, false, false, 8);
+
+  sm_config_set_in_pins(&c, dataPin);
+  sm_config_set_sideset_pins(&c, clkPin);
+  sm_config_set_clkdiv(&c, clkDiv);
+  sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_RX);
+
+  pio_sm_set_consecutive_pindirs(pio, sm, dataPin, 1, false);
+  pio_sm_set_consecutive_pindirs(pio, sm, clkPin, 1, true);
+  pio_sm_set_pins_with_mask(pio, sm, 0, (1u << clkPin) );
+  //pio_gpio_init(pio, dataPin);
+  pio_gpio_init(pio, clkPin);
+
+  pio_sm_init(pio, sm, offset, &c);
+  pio_sm_set_enabled(pio, sm, true);
+}
+
+
+%}
@@ -0,0 +1,57 @@
+// -------------------------------------------------- //
+// This file is autogenerated by pioasm; do not edit! //
+// -------------------------------------------------- //
+
+#if !PICO_NO_HARDWARE
+#include "hardware/pio.h"
+#endif
+
+// ------- //
+// pdm_pio //
+// ------- //
+
+#define pdm_pio_wrap_target 0
+#define pdm_pio_wrap 1
+
+static const uint16_t pdm_pio_program_instructions[] = {
+            //     .wrap_target
+    0x9040, //  0: push   iffull noblock  side 1     
+    0x4001, //  1: in     pins, 1         side 0     
+            //     .wrap
+};
+
+#if !PICO_NO_HARDWARE
+static const struct pio_program pdm_pio_program = {
+    .instructions = pdm_pio_program_instructions,
+    .length = 2,
+    .origin = -1,
+};
+
+static inline pio_sm_config pdm_pio_program_get_default_config(uint offset) {
+    pio_sm_config c = pio_get_default_sm_config();
+    sm_config_set_wrap(&c, offset + pdm_pio_wrap_target, offset + pdm_pio_wrap);
+    sm_config_set_sideset(&c, 1, false, false);
+    return c;
+}
+
+#include "hardware/gpio.h"
+static inline void pdm_pio_program_init(PIO pio, uint sm, uint offset, uint clkPin, uint dataPin, float clkDiv) {
+  pio_sm_config c = pdm_pio_program_get_default_config(offset);
+  sm_config_set_sideset(&c, 1, false, false);
+  //sm_config_set_in_shift(&c, false, true, 8);
+  sm_config_set_in_shift(&c, false, false, 8);
+  sm_config_set_in_pins(&c, dataPin);
+  sm_config_set_sideset_pins(&c, clkPin);
+  sm_config_set_clkdiv(&c, clkDiv);
+  sm_config_set_fifo_join(&c, PIO_FIFO_JOIN_RX);
+  pio_sm_set_consecutive_pindirs(pio, sm, dataPin, 1, false);
+  pio_sm_set_consecutive_pindirs(pio, sm, clkPin, 1, true);
+  pio_sm_set_pins_with_mask(pio, sm, 0, (1u << clkPin) );
+  //pio_gpio_init(pio, dataPin);
+  pio_gpio_init(pio, clkPin);
+  pio_sm_init(pio, sm, offset, &c);
+  pio_sm_set_enabled(pio, sm, true);
+}
+
+#endif
+
@@ -0,0 +1,139 @@
+/*
+  Copyright (c) 2016 Arduino LLC.  All right reserved.
+
+  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
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "PDMDoubleBuffer.h"
+
+PDMDoubleBuffer::PDMDoubleBuffer() :
+  _size(DEFAULT_PDM_BUFFER_SIZE)
+{
+  reset();
+}
+
+PDMDoubleBuffer::~PDMDoubleBuffer()
+{
+}
+
+void PDMDoubleBuffer::setSize(int size)
+{
+  _size = size;
+  reset();
+}
+
+size_t PDMDoubleBuffer::getSize()
+{
+  return _size;
+}
+
+void PDMDoubleBuffer::reset()
+{
+  _buffer[0] = (uint8_t*)realloc(_buffer[0], _size);
+  _buffer[1] = (uint8_t*)realloc(_buffer[1], _size);
+
+  memset(_buffer[0], 0x00, _size);
+  memset(_buffer[1], 0x00, _size);
+
+  _index = 0;
+  _length[0] = 0;
+  _length[1] = 0;
+  _readOffset[0] = 0;
+  _readOffset[1] = 0;
+}
+
+size_t PDMDoubleBuffer::availableForWrite()
+{
+  return (_size - (_length[_index] - _readOffset[_index]));
+}
+
+size_t PDMDoubleBuffer::write(const void *buffer, size_t size)
+{
+  size_t space = availableForWrite();
+
+  if (size > space) {
+    size = space;
+  }
+
+  if (size == 0) {
+    return 0;
+  }
+
+  memcpy(&_buffer[_index][_length[_index]], buffer, size);
+
+  _length[_index] += size;
+
+  return size;
+}
+
+size_t PDMDoubleBuffer::read(void *buffer, size_t size)
+{
+  size_t avail = available();
+
+  if (size > avail) {
+    size = avail;
+  }
+
+  if (size == 0) {
+    return 0;
+  }
+
+  memcpy(buffer, &_buffer[_index][_readOffset[_index]], size);
+  _readOffset[_index] += size;
+
+  return size;
+}
+
+size_t PDMDoubleBuffer::peek(void *buffer, size_t size)
+{
+  size_t avail = available();
+
+  if (size > avail) {
+    size = avail;
+  }
+
+  if (size == 0) {
+    return 0;
+  }
+
+  memcpy(buffer, &_buffer[_index][_readOffset[_index]], size);
+
+  return size;
+}
+
+void* PDMDoubleBuffer::data()
+{
+  return (void*)_buffer[_index];
+}
+
+size_t PDMDoubleBuffer::available()
+{
+  return _length[_index] - _readOffset[_index];
+}
+
+void PDMDoubleBuffer::swap(int length)
+{
+  if (_index == 0) {
+    _index = 1;
+  } else {
+    _index = 0;
+  }
+
+  _length[_index] = length;
+  _readOffset[_index] = 0;
+}
@@ -0,0 +1,54 @@
+/*
+  Copyright (c) 2016 Arduino LLC.  All right reserved.
+
+  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
+*/
+
+#ifndef _PDM_DOUBLE_BUFFER_H_INCLUDED
+#define _PDM_DOUBLE_BUFFER_H_INCLUDED
+
+#include <stddef.h>
+#include <stdint.h>
+
+#define DEFAULT_PDM_BUFFER_SIZE 512
+
+class PDMDoubleBuffer
+{
+public:
+  PDMDoubleBuffer();
+  virtual ~PDMDoubleBuffer();
+
+  void setSize(int size);
+  size_t getSize();
+
+  void reset();
+
+  size_t availableForWrite();
+  size_t write(const void *buffer, size_t size);
+  size_t read(void *buffer, size_t size);
+  size_t peek(void *buffer, size_t size);
+  void* data();
+  size_t available();
+  void swap(int length = 0);
+
+private:
+  uint8_t* _buffer[2] __attribute__((aligned (16)));
+  int _size;
+  volatile int _length[2];
+  volatile int _readOffset[2];
+  volatile int _index; 
+};
+
+#endif
@@ -135,8 +135,8 @@ public:
    size_t size() {
        uint64_t sz = size64();
 #ifdef DEBUG_ESP_PORT
-        if (sz > (uint64_t)SIZE_MAX) {
-            DEBUG_ESP_PORT.printf_P(PSTR("WARNING: SD card size overflow (%lld>= 4GB).  Please update source to use size64().\n"), sz);
+        if (sz > std::numeric_limits<uint32_t>::max()) {
+            DEBUG_ESP_PORT.printf_P(PSTR("WARNING: SD card size overflow (%lld >= 4GB).  Please update source to use size64().\n"), (long long)sz);
        }
 #endif
        return (size_t)sz;
@@ -191,9 +191,6 @@ private:


 // Expose FatStructs.h helpers for MS-DOS date/time for use with dateTimeCallback
-static inline uint16_t FAT_DATE(uint16_t year, uint8_t month, uint8_t day) {
-    return (year - 1980) << 9 | month << 5 | day;
-}
 static inline uint16_t FAT_YEAR(uint16_t fatDate) {
    return 1980 + (fatDate >> 9);
 }
@@ -203,9 +200,6 @@ static inline uint8_t FAT_MONTH(uint16_t fatDate) {
 static inline uint8_t FAT_DAY(uint16_t fatDate) {
    return fatDate & 0X1F;
 }
-static inline uint16_t FAT_TIME(uint8_t hour, uint8_t minute, uint8_t second) {
-    return hour << 11 | minute << 5 | second >> 1;
-}
 static inline uint8_t FAT_HOUR(uint16_t fatTime) {
    return fatTime >> 11;
 }
@@ -64,13 +64,13 @@ FileImplPtr SDFSImpl::open(const char* path, OpenMode openMode, AccessMode acces
        }
        free(pathStr);
    }
-    sdfat::File32 fd = _fs.open(path, flags);
+    File32 fd = _fs.open(path, flags);
    if (!fd) {
        DEBUGV("SDFSImpl::openFile: fd=%p path=`%s` openMode=%d accessMode=%d",
               &fd, path, openMode, accessMode);
        return FileImplPtr();
    }
-    auto sharedFd = std::make_shared<sdfat::File32>(fd);
+    auto sharedFd = std::make_shared<File32>(fd);
    return std::make_shared<SDFSFileImpl>(this, sharedFd, path);
 }

@@ -90,7 +90,7 @@ DirImplPtr SDFSImpl::openDir(const char* path)
    }
    // At this point we have a name of "/blah/blah/blah" or "blah" or ""
    // If that references a directory, just open it and we're done.
-    sdfat::File32 dirFile;
+    File32 dirFile;
    const char *filter = "";
    if (!pathStr[0]) {
        // openDir("") === openDir("/")
@@ -135,7 +135,7 @@ DirImplPtr SDFSImpl::openDir(const char* path)
        DEBUGV("SDFSImpl::openDir: path=`%s`\n", path);
        return DirImplPtr();
    }
-    auto sharedDir = std::make_shared<sdfat::File32>(dirFile);
+    auto sharedDir = std::make_shared<File32>(dirFile);
    auto ret = std::make_shared<SDFSDirImpl>(filter, this, sharedDir, pathStr);
    free(pathStr);
    return ret;
@@ -145,12 +145,12 @@ bool SDFSImpl::format() {
    if (_mounted) {
        return false;
    }
-    sdfat::SdCardFactory cardFactory;
-    sdfat::SdCard* card = cardFactory.newCard(sdfat::SdSpiConfig(_cfg._csPin, DEDICATED_SPI, _cfg._spiSettings));
+    SdCardFactory cardFactory;
+    SdCard* card = cardFactory.newCard(SdSpiConfig(_cfg._csPin, DEDICATED_SPI, _cfg._spiSettings));
    if (!card || card->errorCode()) {
        return false;
    }
-    sdfat::FatFormatter fatFormatter;
+    FatFormatter fatFormatter;
    uint8_t *sectorBuffer = new uint8_t[512];
    bool ret = fatFormatter.format(card, sectorBuffer, nullptr);
    delete[] sectorBuffer;
@@ -96,11 +96,11 @@ public:
            return false;
        }
        info.maxOpenFiles = 999; // TODO - not valid
-        info.blockSize = _fs.vol()->sectorsPerCluster() * _fs.vol()->bytesPerSector();
+        info.blockSize = _fs.vol()->bytesPerCluster();
        info.pageSize = 0; // TODO ?
        info.maxPathLength = 255; // TODO ?
        info.totalBytes =_fs.vol()->clusterCount() * info.blockSize;
-        info.usedBytes = info.totalBytes - (_fs.vol()->freeClusterCount() * _fs.vol()->sectorsPerCluster() * _fs.vol()->bytesPerSector());
+        info.usedBytes = info.totalBytes - (_fs.vol()->freeClusterCount() * _fs.vol()->bytesPerCluster());
        return true;
    }

@@ -114,9 +114,9 @@ public:
        info.maxOpenFiles  = i.maxOpenFiles;
        info.maxPathLength = i.maxPathLength;
 #ifdef DEBUG_ESP_PORT
-        if (i.totalBytes > (uint64_t)SIZE_MAX) {
+        if (i.totalBytes > std::numeric_limits<uint32_t>::max()) {
            // This catches both total and used cases, since used must always be < total.
-            DEBUG_ESP_PORT.printf_P(PSTR("WARNING: SD card size overflow (%lld>= 4GB).  Please update source to use info64().\n"), i.totalBytes);
+            DEBUG_ESP_PORT.printf_P(PSTR("WARNING: SD card size overflow (%lld >= 4GB).  Please update source to use info64().\n"), (long long)i.totalBytes);
        }
 #endif
        info.totalBytes    = (size_t)i.totalBytes;
@@ -148,14 +148,14 @@ public:

    bool begin() override {
        if (_mounted) {
-            end();
+            return true;
        }
        _mounted = _fs.begin(_cfg._csPin, _cfg._spiSettings);
        if (!_mounted && _cfg._autoFormat) {
            format();
            _mounted = _fs.begin(_cfg._csPin, _cfg._spiSettings);
        }
-	sdfat::FsDateTime::setCallback(dateTimeCB);
+	FsDateTime::setCallback(dateTimeCB);
        return _mounted;
    }

@@ -184,7 +184,7 @@ public:
        return (totalClusters() / blocksPerCluster());
    }
    size_t clusterSize() {
-        return blocksPerCluster() * _fs.vol()->bytesPerSector();
+        return _fs.vol()->bytesPerCluster();
    }
    size_t size() {
        return (clusterSize() * totalClusters());
@@ -228,14 +228,14 @@ protected:
    friend class SDFileImpl;
    friend class SDFSDirImpl;

-    sdfat::SdFat* getFs()
+    SdFat* getFs()
    {
        return &_fs;
    }


-    static uint8_t _getFlags(OpenMode openMode, AccessMode accessMode) {
-        uint8_t mode = 0;
+    static int _getFlags(OpenMode openMode, AccessMode accessMode) {
+        int mode = 0;
        if (openMode & OM_CREATE) {
            mode |= O_CREAT;
        }
@@ -245,16 +245,17 @@ protected:
        if (openMode & OM_TRUNCATE) {
            mode |= O_TRUNC;
        }
-        if (accessMode & AM_READ) {
+        if ((accessMode & (AM_READ | AM_WRITE)) == (AM_READ | AM_WRITE)) {
+            mode |= O_RDWR;
+        } else if (accessMode & AM_READ) {
            mode |= O_READ;
-        }
-        if (accessMode & AM_WRITE) {
+        } else if (accessMode & AM_WRITE) {
            mode |= O_WRITE;
        }
        return mode;
    }

-    sdfat::SdFat _fs;
+    SdFat _fs;
    SDFSConfig   _cfg;
    bool         _mounted;
 };
@@ -263,7 +264,7 @@ protected:
 class SDFSFileImpl : public FileImpl
 {
 public:
-    SDFSFileImpl(SDFSImpl *fs, std::shared_ptr<sdfat::File32> fd, const char *name)
+    SDFSFileImpl(SDFSImpl *fs, std::shared_ptr<File32> fd, const char *name)
        : _fs(fs), _fd(fd), _opened(true)
    {
        _name = std::shared_ptr<char>(new char[strlen(name) + 1], std::default_delete<char[]>());
@@ -379,7 +380,7 @@ public:
    time_t getLastWrite() override {
        time_t ftime = 0;
        if (_opened && _fd) {
-            sdfat::DirFat_t tmp;
+            DirFat_t tmp;
            if (_fd.get()->dirEntry(&tmp)) {
                ftime = SDFSImpl::FatToTimeT(*(uint16_t*)tmp.modifyDate, *(uint16_t*)tmp.modifyTime);
            }
@@ -390,7 +391,7 @@ public:
    time_t getCreationTime() override {
        time_t ftime = 0;
        if (_opened && _fd) {
-            sdfat::DirFat_t tmp;
+            DirFat_t tmp;
            if (_fd.get()->dirEntry(&tmp)) {
                ftime = SDFSImpl::FatToTimeT(*(uint16_t*)tmp.createDate, *(uint16_t*)tmp.createTime);
            }
@@ -399,16 +400,16 @@ public:
    }

 protected:
-    SDFSImpl*                     _fs;
-    std::shared_ptr<sdfat::File32>  _fd;
-    std::shared_ptr<char>         _name;
-    bool                          _opened;
+    SDFSImpl*                _fs;
+    std::shared_ptr<File32>  _fd;
+    std::shared_ptr<char>    _name;
+    bool                     _opened;
 };

 class SDFSDirImpl : public DirImpl
 {
 public:
-    SDFSDirImpl(const String& pattern, SDFSImpl* fs, std::shared_ptr<sdfat::File32> dir, const char *dirPath = nullptr)
+    SDFSDirImpl(const String& pattern, SDFSImpl* fs, std::shared_ptr<File32> dir, const char *dirPath = nullptr)
        : _pattern(pattern), _fs(fs), _dir(dir), _valid(false), _dirPath(nullptr)
    {
        if (dirPath) {
@@ -483,14 +484,14 @@ public:
    {
        const int n = _pattern.length();
        do {
-            sdfat::File32 file;
+            File32 file;
            file.openNext(_dir.get(), O_READ);
            if (file) {
                _valid = 1;
                _size = file.fileSize();
                _isFile = file.isFile();
                _isDirectory = file.isDir();
-                sdfat::DirFat_t tmp;
+                DirFat_t tmp;
                if (file.dirEntry(&tmp)) {
                    _time = SDFSImpl::FatToTimeT(*(uint16_t*)tmp.modifyDate, *(uint16_t*)tmp.modifyTime);
                    _creation = SDFSImpl::FatToTimeT(*(uint16_t*)tmp.createDate, *(uint16_t*)tmp.createTime);
@@ -515,17 +516,17 @@ public:
    }

 protected:
-    String                       _pattern;
-    SDFSImpl*                    _fs;
-    std::shared_ptr<sdfat::File32> _dir;
-    bool                         _valid;
-    char                         _lfn[64];
-    time_t                       _time;
-    time_t                       _creation;
-    std::shared_ptr<char>        _dirPath;
-    uint32_t                     _size;
-    bool                         _isFile;
-    bool                         _isDirectory;
+    String                  _pattern;
+    SDFSImpl*               _fs;
+    std::shared_ptr<File32> _dir;
+    bool                    _valid;
+    char                    _lfn[64];
+    time_t                  _time;
+    time_t                  _creation;
+    std::shared_ptr<char>   _dirPath;
+    uint32_t                _size;
+    bool                    _isFile;
+    bool                    _isDirectory;
 };

 }; // namespace sdfs
@@ -179,23 +179,22 @@ void SPIClassRP2040::transfer(void *txbuf, void *rxbuf, size_t count) {

 void SPIClassRP2040::beginTransaction(SPISettings settings) {
    DEBUGSPI("SPI::beginTransaction(clk=%d, bo=%s\n", _spis.getClockFreq(), (_spis.getBitOrder() == MSBFIRST) ? "MSB" : "LSB");
-    _spis = settings;
-    if (_initted) {
-        DEBUGSPI("SPI: deinitting currently active SPI\n");
-        spi_deinit(_spi);
+    if (_initted && settings == _spis) {
+        DEBUGSPI("SPI: Reusing existing initted SPI\n");
+    } else {
+        _spis = settings;
+        if (_initted) {
+            DEBUGSPI("SPI: deinitting currently active SPI\n");
+            spi_deinit(_spi);
+        }
+        DEBUGSPI("SPI: initting SPI\n");
+        spi_init(_spi, _spis.getClockFreq());
+        _initted = true;
    }
-    DEBUGSPI("SPI: initting SPI\n");
-    spi_init(_spi, _spis.getClockFreq());
-    _initted = true;
 }

 void SPIClassRP2040::endTransaction(void) {
    DEBUGSPI("SPI::endTransaction()\n");
-    if (_initted) {
-        DEBUGSPI("SPI: deinitting currently active SPI\n");
-        spi_deinit(_spi);
-    }
-    _initted = false;
 }

 bool SPIClassRP2040::setRX(pin_size_t pin) {
@@ -281,6 +280,11 @@ void SPIClassRP2040::begin(bool hwCS) {

 void SPIClassRP2040::end() {
    DEBUGSPI("SPI::end()\n");
+    if (_initted) {
+        DEBUGSPI("SPI: deinitting currently active SPI\n");
+        _initted = false;
+        spi_deinit(_spi);
+    }
    gpio_set_function(_RX, GPIO_FUNC_SIO);
    if (_hwCS) {
        gpio_set_function(_CS, GPIO_FUNC_SIO);
@@ -83,6 +83,9 @@ bool TwoWire::setSCL(pin_size_t pin) {

 void TwoWire::setClock(uint32_t hz) {
    _clkHz = hz;
+    if (_running) {
+        i2c_set_baudrate(_i2c, hz);
+    }
 }

 // Master mode
@@ -123,7 +126,7 @@ void TwoWire::begin(uint8_t addr) {
    i2c_set_slave_mode(_i2c, true, addr);

    // Our callback IRQ
-    _i2c->hw->intr_mask = (1 << 10) | (1 << 9) | (1 << 5) | (1 << 2);
+    _i2c->hw->intr_mask = (1 << 10) | (1 << 9) | (1 << 6) | (1 << 5) | (1 << 2);

    int irqNo = I2C0_IRQ + i2c_hw_index(_i2c);
    irq_set_exclusive_handler(irqNo, i2c_hw_index(_i2c) == 0 ? _handler0 : _handler1);
@@ -146,7 +149,7 @@ void TwoWire::onIRQ() {
        _i2c->hw->clr_start_det;
    }
    if (_i2c->hw->intr_stat & (1 << 9)) {
-        if (_onReceiveCallback) {
+        if (_onReceiveCallback && _buffLen) {
            _onReceiveCallback(_buffLen);
        }
        _buffLen = 0;
@@ -154,6 +157,10 @@ void TwoWire::onIRQ() {
        _slaveStartDet = false;
        _i2c->hw->clr_stop_det;
    }
+    if (_i2c->hw->intr_stat & (1 << 6)) {
+        // TX_ABRT
+        _i2c->hw->clr_tx_abrt;
+    }
    if (_i2c->hw->intr_stat & (1 << 5)) {
        // RD_REQ
        if (_onRequestCallback) {
@@ -177,6 +184,8 @@ void TwoWire::end() {
        return;
    }
    i2c_deinit(_i2c);
+    pinMode(_sda, INPUT);
+    pinMode(_scl, INPUT);
    _running = false;
    _txBegun = false;
 }
@@ -188,6 +197,7 @@ void TwoWire::beginTransmission(uint8_t addr) {
    }
    _addr = addr;
    _buffLen = 0;
+    _buffOff = 0;
    _txBegun = true;
 }

@@ -196,7 +206,10 @@ size_t TwoWire::requestFrom(uint8_t address, size_t quantity, bool stopBit) {
        return 0;
    }

-    _buffLen = i2c_read_blocking_until(_i2c, address, _buff, quantity, !stopBit, make_timeout_time_ms(50));
+    _buffLen = i2c_read_blocking_until(_i2c, address, _buff, quantity, !stopBit, make_timeout_time_ms(_timeout));
+    if (_buffLen == PICO_ERROR_GENERIC) {
+        _buffLen = 0;
+    }
    _buffOff = 0;
    return _buffLen;
 }
@@ -284,7 +297,7 @@ uint8_t TwoWire::endTransmission(bool stopBit) {
        return _probe(_addr, _sda, _scl, _clkHz) ? 0 : 2;
    } else {
        auto len = _buffLen;
-        auto ret = i2c_write_blocking_until(_i2c, _addr, _buff, _buffLen, !stopBit, make_timeout_time_ms(50));
+        auto ret = i2c_write_blocking_until(_i2c, _addr, _buff, _buffLen, !stopBit, make_timeout_time_ms(_timeout));
        _buffLen = 0;
        return (ret == len) ? 0 : 4;
    }
@@ -31,7 +31,7 @@
 #define WIRE_HAS_END 1

 #ifndef WIRE_BUFFER_SIZE
-#define WIRE_BUFFER_SIZE 128
+#define WIRE_BUFFER_SIZE 256
 #endif

 class TwoWire : public HardwareI2C {
@@ -0,0 +1,21 @@
+void setup() {
+  Serial.begin(115200);
+  delay(3000);
+  Serial.println("High precision timing measurements/delays can be built using");
+  Serial.println("rp2040.getCycleCount() and rp2040.getCycleCount64().\n");
+  uint32_t a = rp2040.getCycleCount();
+  delay(1000);
+  uint32_t b = rp2040.getCycleCount();
+  Serial.printf("There are %d cycles in one second.\n\n\n", b - a);
+
+  delay(3000);
+
+  Serial.println("Note that the (32-bit) getCycleCount() will wraparound in ~30 seconds.");
+  Serial.println("Using the 64-bit getCycleCount64() makes it practically infinite.");
+  Serial.printf("\n%15s - %15s\n", "getCycleCount", "getCycleCount64");
+}
+
+void loop() {
+  Serial.printf("%15u - %15llu\n", rp2040.getCycleCount(), rp2040.getCycleCount64());
+  delay(1500);
+}
@@ -1,6 +1,17 @@
 {
-    "name": "framework-arduinopico",
-    "description": "Arduino Wiring-based Framework (RPi Pico RP2040)",
-    "url": "https://github.com/esrlephilhower/arduino-pico",
-    "version": "0.9.2"
+  "name": "framework-arduinopico",
+  "version": "1.11302.0",
+  "description": "Arduino Wiring-based Framework (RPi Pico RP2040)",
+  "keywords": [
+    "framework",
+    "arduino",
+    "Cortex-M",
+    "Raspberry Pi",
+    "RP2040"
+  ],
+  "homepage": "https://arduino-pico.readthedocs.io/en/latest/",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/earlephilhower/arduino-pico"
+  }
 }
@@ -1,6 +1,12 @@
 Publishing New Releases
 =======================

+First, update the version number throughout the repo and push the change:
+
+    ./tools/makever.py --version X.Y.Z
+    git commit -a -m "Update version"
+    git push
+
 GitHub CI Actions are used to automatically build a draft package whenever a tag is pushed to repo:

    git tag X.Y.Z
@@ -26,6 +26,9 @@
                  {
                     "name": "Adafruit ItsyBitsy RP2040"
                  },
+                  {
+                     "name": "Adafruit KB2040"
+                  },
                  {
                     "name": "Adafruit Macropad RP2040"
                  },
@@ -38,9 +41,57 @@
                  {
                     "name": "Adafruit Trinkey RP2040 QT"
                  },
+                  {
+                     "name": "Arduino Nano RP2040 Connect"
+                  },
+                  {
+                     "name": "Cytron Maker Nano RP2040"
+                  },
+                  {
+                     "name": "Cytron Maker Pi RP2040"
+                  },
+                  {
+                     "name": "DeRuiLab FlyBoard2040 Core"
+                  },
+                  {
+                     "name": "DFRobot Beetle RP2040"
+                  },
+                  {
+                     "name": "Invector Labs Challenger RP2040 WiFi"
+                  },
+                  {
+                     "name": "Invector Labs Challenger NB RP2040 WiFi"
+                  },
+                  {
+                     "name": "Invector Labs Challenger RP2040 LTE"
+                  },
+                  {
+                     "name": "Invector Labs Challenger RP2040 LoRa"
+                  },
+                  {
+                     "name": "Invector Labs RPICO32"
+                  },
+                  {
+                     "name": "Seeed XIAO RP2040"
+                  },
+                  {
+                     "name": "Solder Party RP2040 Stamp"
+                  },
                  {
                     "name": "SparkFun ProMicro RP2040"
                  },
+                  {
+                     "name": "SparkFun Thing Plus RP2040"
+                  },
+                  {
+                     "name": "Melopero Shake RP2040"
+                  },
+                  {
+                     "name": "uPesy RP2040 DevKit"
+                  },
+                  {
+                     "name": "WIZnet W5100S-EVB-Pico"
+                  },
                  {
                     "name": "Generic RP2040 Module"
                  }
@@ -48,22 +99,22 @@
               "toolsDependencies": [
                  {
                     "packager": "rp2040",
-                     "version": "1.2.0-a-407f016",
+                     "version": "1.3.3-a-ed6d983",
                     "name": "pqt-gcc"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.2.0-a-407f016",
+                     "version": "1.3.3-a-ed6d983",
                     "name": "pqt-mklittlefs"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.2.0-a-407f016",
+                     "version": "1.3.3-a-ed6d983",
                     "name": "pqt-elf2uf2"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.2.0-a-407f016",
+                     "version": "1.3.3-a-ed6d983",
                     "name": "pqt-pioasm"
                  },
                  {
@@ -73,7 +124,7 @@
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.2.0-a-407f016",
+                     "version": "1.3.3-a-ed6d983",
                     "name": "pqt-openocd"
                  }
               ],
@@ -84,57 +135,57 @@
         ],
         "tools": [
            {
-               "version": "1.2.0-a-407f016",
+               "version": "1.3.3-a-ed6d983",
               "name": "pqt-openocd",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/aarch64-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "checksum": "SHA-256:a85f1df05614ac0bba3742df0aa36b0a87b9bbef0fbadd4d0ccfa1938801ae98",
-                     "size": "6144933"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/aarch64-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "checksum": "SHA-256:d1d95978101c69c3bc777e61ba70077bf9dc4b3245aa7dd93171acaec4d29fb1",
+                     "size": "5607214"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/arm-linux-gnueabihf.openocd-d58c2ef5e.210607.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.openocd-d58c2ef5e.210607.tar.gz",
-                     "checksum": "SHA-256:f79ffe70110512ce41c61477910e33fa5ef986fbc142aedfd89f7009f132b237",
-                     "size": "5849262"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/arm-linux-gnueabihf.openocd-e3428fadb.220212.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.openocd-e3428fadb.220212.tar.gz",
+                     "checksum": "SHA-256:81373c1e12a88e382a587688343c2e2f2f1f999d38334b7b6ded174929cc9b88",
+                     "size": "5344032"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "checksum": "SHA-256:b4a8af73539ae2e2a653f8fbe029a5b52db80580c942f0399cafb7d3829498c0",
-                     "size": "5651754"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "checksum": "SHA-256:6a4dd98422a187c7725fc349b045b55e4742166c65461847d1bd59537242b0be",
+                     "size": "5168258"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-w64-mingw32.openocd-d58c2ef5e.210607.zip",
-                     "archiveFileName": "i686-w64-mingw32.openocd-d58c2ef5e.210607.zip",
-                     "checksum": "SHA-256:7156af6e650df6fc4bfc8541f2f1fd05bfe136b3547b4a0aef91668af88f8b6d",
-                     "size": "8330281"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.openocd-e3428fadb.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.openocd-e3428fadb.220212.zip",
+                     "checksum": "SHA-256:0643903fcd887a8423cb4ba5329565b499c206921f77ad2e59ae32c472a26dd7",
+                     "size": "2156820"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-apple-darwin14.openocd-d58c2ef5e.210607.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.openocd-d58c2ef5e.210607.tar.gz",
-                     "checksum": "SHA-256:965e35faf4a93396c4f4a22a504fd6b4f639752922996447d5c1e0e65d7329de",
-                     "size": "1981786"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-apple-darwin14.openocd-e3428fadb.220212.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.openocd-e3428fadb.220212.tar.gz",
+                     "checksum": "SHA-256:913b65baeeef1b60caf202e69cde4cd5a3ba0ed2f75f2600adfb3dcf4b3899ef",
+                     "size": "2002482"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.openocd-d58c2ef5e.210607.tar.gz",
-                     "checksum": "SHA-256:c54390c9464bcf2a32265ecbafaec6d68cdd41471fa14ba4afabe43fe0a11645",
-                     "size": "6076479"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.openocd-e3428fadb.220212.tar.gz",
+                     "checksum": "SHA-256:63b2be48c1438d2a09f4ed65d89e555176f18753886555cf48f861e9288d7dc1",
+                     "size": "5540524"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-w64-mingw32.openocd-d58c2ef5e.210607.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.openocd-d58c2ef5e.210607.zip",
-                     "checksum": "SHA-256:4b481449371b39b4e0e87bd5e5a247f99c025b97ccd186c3b1ca58ff2cb44875",
-                     "size": "8719676"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.openocd-e3428fadb.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.openocd-e3428fadb.220212.zip",
+                     "checksum": "SHA-256:0643903fcd887a8423cb4ba5329565b499c206921f77ad2e59ae32c472a26dd7",
+                     "size": "2156820"
                  }
               ]
            },
@@ -201,222 +252,222 @@
               ]
            },
            {
-               "version": "1.2.0-a-407f016",
+               "version": "1.3.3-a-ed6d983",
               "name": "pqt-gcc",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/aarch64-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "checksum": "SHA-256:fc30b07b98fe965db814178b71f368895790f6789d503d71c8af70ff92451d5c",
-                     "size": "103186508"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/aarch64-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "checksum": "SHA-256:7773b43b9c0bf5b7cdb2299e9d1b151df97e0a2ded4428809ec68264ac9818a9",
+                     "size": "102741416"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/arm-linux-gnueabihf.arm-none-eabi-407f016.210607.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.arm-none-eabi-407f016.210607.tar.gz",
-                     "checksum": "SHA-256:4a6ecfaf485ab428e233cc06e853b91dc272146ca0200fbbcdcb87f1930239b8",
-                     "size": "95858053"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/arm-linux-gnueabihf.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "checksum": "SHA-256:c422910ef0e29528939e037ea3c518a532726111604b85b27f3f245820680ccb",
+                     "size": "95383443"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "checksum": "SHA-256:8f97c67d20077c551b13344c1a96a9f51dd3a91b178a4731cd9dcc27a19217e6",
-                     "size": "105954517"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "checksum": "SHA-256:6306791b43de955c4a4d0a1b8972e0f696206591a810eefc16b906b157322bd3",
+                     "size": "105350371"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-w64-mingw32.arm-none-eabi-407f016.210607.zip",
-                     "archiveFileName": "i686-w64-mingw32.arm-none-eabi-407f016.210607.zip",
-                     "checksum": "SHA-256:c30e8b67d16ae6f29bcca84c166ecc3fced209d73b1b8925d5dd0e79b850f923",
-                     "size": "105487629"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-w64-mingw32.arm-none-eabi-ed6d983.220212.zip",
+                     "archiveFileName": "i686-w64-mingw32.arm-none-eabi-ed6d983.220212.zip",
+                     "checksum": "SHA-256:b00aa3594d1911bea07c1dbf31b9a63430f4dcb91c7b3b1341f8551d361d405f",
+                     "size": "105568357"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-apple-darwin14.arm-none-eabi-407f016.210607.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.arm-none-eabi-407f016.210607.tar.gz",
-                     "checksum": "SHA-256:5c617ffcf86518a6451701bd5756e28f9b7587acc0cb2cd503b6c600b8cf417d",
-                     "size": "107365915"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-apple-darwin14.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "checksum": "SHA-256:e93b967d1fb6ed0fc7cf6a5161e22a597dd05080c1353ac74e2a42ddf8dfe98d",
+                     "size": "107429038"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.arm-none-eabi-407f016.210607.tar.gz",
-                     "checksum": "SHA-256:0a2b7d03f79f723d62255595f9af862807feee601456bb0e2477ce188a4a975f",
-                     "size": "107847587"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.arm-none-eabi-ed6d983.220212.tar.gz",
+                     "checksum": "SHA-256:047c4d482cf77e09bd8069fc9d5b28b1e0c76440ad81583a0fc3a8e809959bb8",
+                     "size": "106740897"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-w64-mingw32.arm-none-eabi-407f016.210607.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.arm-none-eabi-407f016.210607.zip",
-                     "checksum": "SHA-256:675ee78477afc5f2daf1e25f3c0560a3adbaa7f2d73d99059e549835b4022bf8",
-                     "size": "110334002"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.arm-none-eabi-ed6d983.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.arm-none-eabi-ed6d983.220212.zip",
+                     "checksum": "SHA-256:5c15725628a3dbd47a8fa8f9a9aab7a2221815ec9bf85dc2080ce19166316ae6",
+                     "size": "110420777"
                  }
               ]
            },
            {
-               "version": "1.2.0-a-407f016",
+               "version": "1.3.3-a-ed6d983",
               "name": "pqt-elf2uf2",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/aarch64-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:59f6c2f08f1809987bf40df51808f848146a00c626dff06d3cabafb726db8830",
-                     "size": "79850"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/aarch64-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:8cb7ce703b0fa6f2fce6b124ae6f34ad0b866aa4a58096f22b66b1251c1b11c0",
+                     "size": "79853"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/arm-linux-gnueabihf.elf2uf2-fc10a97.210607.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.elf2uf2-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:fb6d4270aaa017b5fa60937f82674e5e55cf12da392fd23cc5d1f6de279bcd04",
-                     "size": "54220"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/arm-linux-gnueabihf.elf2uf2-2062372.220212.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.elf2uf2-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:790d46b411c16a4a210a91436eb4bdc81fb34f0119148a8f9c4b09489489a54d",
+                     "size": "54244"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:b55b823e59b7fa4d1ea130621c6144d84a96f3cb9571109f878472fecbcda7f8",
-                     "size": "87882"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:7c05c70f761bb6caa986d24ac1065367fe906ff7f0434cf4b0112ace331f74bc",
+                     "size": "87891"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-w64-mingw32.elf2uf2-fc10a97.210607.zip",
-                     "archiveFileName": "i686-w64-mingw32.elf2uf2-fc10a97.210607.zip",
-                     "checksum": "SHA-256:e66f3959fcdc2874dd4074d6e5205715235551062d5283da22906e369dc24bf0",
-                     "size": "70429"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-w64-mingw32.elf2uf2-2062372.220212.zip",
+                     "archiveFileName": "i686-w64-mingw32.elf2uf2-2062372.220212.zip",
+                     "checksum": "SHA-256:e6f0578ea781b160390994d3e95bedfec01e212d47243b1adb84f910a06bcba4",
+                     "size": "70405"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-apple-darwin14.elf2uf2-fc10a97.210607.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.elf2uf2-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:f85403c39741498547448f40fa6ae323519452af7ab0118c4cf7408340c20e07",
-                     "size": "81920"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-apple-darwin14.elf2uf2-2062372.220212.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.elf2uf2-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:d65de7218eaf01c9bf58fa22bd9e1e7c10c054213948b4b62f648a058d09b4de",
+                     "size": "81981"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.elf2uf2-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:5e9155cea5639b3716f5149e5a98fa864fe3abd9281f53f1dec65fdbe24d8f28",
-                     "size": "79515"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.elf2uf2-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:ba7795ed49c54f3f52caee675b0fd078f6fb8498a47bf7e5d7457065271df338",
+                     "size": "79585"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-w64-mingw32.elf2uf2-fc10a97.210607.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.elf2uf2-fc10a97.210607.zip",
-                     "checksum": "SHA-256:e48b9e8d1c238f29e078056f6fedce715b773b042e52bf63df3759822fa66e64",
-                     "size": "78298"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.elf2uf2-2062372.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.elf2uf2-2062372.220212.zip",
+                     "checksum": "SHA-256:02c7684ed1aea4e18216ec6bbbcedeb482c5f23ad7d5eb9dcb942b8ae6cad5ae",
+                     "size": "78279"
                  }
               ]
            },
            {
-               "version": "1.2.0-a-407f016",
+               "version": "1.3.3-a-ed6d983",
               "name": "pqt-pioasm",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/aarch64-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:6076ec3624c40cb59c456b501450621c57097bd83af4ebcbd03e3b46333fa745",
-                     "size": "453301"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/aarch64-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:9ea17ecf0e492bc6a971f6a78780c3b3c6ee644d52e056cba08a708ac225add2",
+                     "size": "453558"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/arm-linux-gnueabihf.pioasm-fc10a97.210607.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.pioasm-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:a6fe07241fb913e846c74855165e038b327705d75d2ca576dd714b42e17749c4",
-                     "size": "360370"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/arm-linux-gnueabihf.pioasm-2062372.220212.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.pioasm-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:c7af69227a3b3c54ccf87122b18842460a263bd711abf93336794ce5f905c284",
+                     "size": "360559"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:47808419d4a6019e527a0aec8c13b5a8bad7d838547fbb97abcddca866f3fc6b",
-                     "size": "511410"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:f66b9bde3d6859d43049b019fb639dd0bfafcd43f1389ffc499d18949bcf1808",
+                     "size": "511397"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-w64-mingw32.pioasm-fc10a97.210607.zip",
-                     "archiveFileName": "i686-w64-mingw32.pioasm-fc10a97.210607.zip",
-                     "checksum": "SHA-256:c815d6845d374133c346e3ae3e40746217be3a6313190a9b4cdc43a4cd2e2bea",
-                     "size": "385662"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-w64-mingw32.pioasm-2062372.220212.zip",
+                     "archiveFileName": "i686-w64-mingw32.pioasm-2062372.220212.zip",
+                     "checksum": "SHA-256:89cfa44101dade30000cfaa5985de7f0e7aba93d03dc45ba962f97226ae4e41f",
+                     "size": "385748"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-apple-darwin14.pioasm-fc10a97.210607.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.pioasm-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:cd19c8ff52ebed430e039b18fd5bf5bfa33f60727a51ca1c81ad3bbcbb6ec763",
-                     "size": "480403"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-apple-darwin14.pioasm-2062372.220212.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.pioasm-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:d531c911e6eba0333379af04dd807917659bd4d34be9f4bd6792aeff55ab15a9",
+                     "size": "480495"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.pioasm-fc10a97.210607.tar.gz",
-                     "checksum": "SHA-256:9b8d778a2b3dd5b6bc110dac86e4f9a8321e0bd43f8149bd2722b992b3684515",
-                     "size": "458642"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.pioasm-2062372.220212.tar.gz",
+                     "checksum": "SHA-256:2cd4aa8af98558461cb7b85b21830ea854a430a3e57668d618c5f1cd5e389809",
+                     "size": "458730"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-w64-mingw32.pioasm-fc10a97.210607.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.pioasm-fc10a97.210607.zip",
-                     "checksum": "SHA-256:87b5f6cd9c760e5091d1d6e6383028a4255c07d054e6eab0583590dbdc05de69",
-                     "size": "408341"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.pioasm-2062372.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.pioasm-2062372.220212.zip",
+                     "checksum": "SHA-256:ba586e67f4b309690a51fca70fdd26f38b68951b0fee4dc8333183ef6429833a",
+                     "size": "408649"
                  }
               ]
            },
            {
-               "version": "1.2.0-a-407f016",
+               "version": "1.3.3-a-ed6d983",
               "name": "pqt-mklittlefs",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/aarch64-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "checksum": "SHA-256:6475b7cb24ba165fa97e5ae9e66e56901e3609b57b0edb359b75c810b8267d73",
-                     "size": "44791"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/aarch64-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "checksum": "SHA-256:2455f5ca6cb1f7b73ed1cb55d4d2261d249c1b24915bd4e66e28f037a0a13116",
+                     "size": "47271"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/arm-linux-gnueabihf.mklittlefs-6b5c62d.210607.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.mklittlefs-6b5c62d.210607.tar.gz",
-                     "checksum": "SHA-256:39bfd76f25b5da89244f708de856a5e9548db37eec7c5a88e4832dc5c3d0ee1f",
-                     "size": "38247"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/arm-linux-gnueabihf.mklittlefs-affa497.220212.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.mklittlefs-affa497.220212.tar.gz",
+                     "checksum": "SHA-256:f4b71138f1469e4b9ce82b3b21252aca265a88d56a5d48513dbb5c6d58b19841",
+                     "size": "40807"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "checksum": "SHA-256:9b6841d1c5070fb1f2b4a5b6c6850395740ac997aa3fbf888f8cd6e7628200e8",
-                     "size": "48240"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "checksum": "SHA-256:ed1011230c75447dad3d912b7b5607ddcc59e093ee7ebd653fb05274bc876f4c",
+                     "size": "50909"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/i686-w64-mingw32.mklittlefs-6b5c62d.210607.zip",
-                     "archiveFileName": "i686-w64-mingw32.mklittlefs-6b5c62d.210607.zip",
-                     "checksum": "SHA-256:9b6d7ab130c1f07d63a045e987f69496bfc5e3bb4bf6edc9bf4cd04d363c2ac4",
-                     "size": "332804"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/i686-w64-mingw32.mklittlefs-affa497.220212.zip",
+                     "archiveFileName": "i686-w64-mingw32.mklittlefs-affa497.220212.zip",
+                     "checksum": "SHA-256:1289f51c674ebdc568843b82c88db21eb4c295f3b15c26398d31266b9da63b4c",
+                     "size": "334050"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-apple-darwin14.mklittlefs-6b5c62d.210607.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.mklittlefs-6b5c62d.210607.tar.gz",
-                     "checksum": "SHA-256:538c30d2a072845873d2e3552ac725dcef022f9ac9a873925c218d5564615321",
-                     "size": "362807"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-apple-darwin14.mklittlefs-affa497.220212.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.mklittlefs-affa497.220212.tar.gz",
+                     "checksum": "SHA-256:0c0d7d8c80739ed79bc5a41e831d0229b6378e87f4c58f148d884814f1ad46d2",
+                     "size": "365757"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.mklittlefs-6b5c62d.210607.tar.gz",
-                     "checksum": "SHA-256:f2b4d849a2146e54fec52abdfc4391894addfbf1e904094424fb5a2a22873e58",
-                     "size": "46918"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.mklittlefs-affa497.220212.tar.gz",
+                     "checksum": "SHA-256:c504429c24cfea9bf841cbf0caa29bbe0115e72c94c18f949451ffa540d6cacc",
+                     "size": "49766"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.2.0-a/x86_64-w64-mingw32.mklittlefs-6b5c62d.210607.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.mklittlefs-6b5c62d.210607.zip",
-                     "checksum": "SHA-256:c1105383c2c694978aee521dc1d921fb2e2c3452015c5456f323ffad09595725",
-                     "size": "345250"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.3-a/x86_64-w64-mingw32.mklittlefs-affa497.220212.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.mklittlefs-affa497.220212.zip",
+                     "checksum": "SHA-256:4ada867888513596fa51bf78c98d9e970de9b8f1eec4f88d85e6e7621704fb91",
+                     "size": "347602"
                  }
               ]
            }
@@ -20,7 +20,8 @@
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification

 name=Raspberry Pi RP2040 Boards
-version=0.9.9
+version=1.13.2
+
 runtime.tools.pqt-gcc.path={runtime.platform.path}/system/arm-none-eabi
 runtime.tools.pqt-python3.path={runtime.platform.path}/system/python3
 runtime.tools.pqt-mklittlefs.path={runtime.platform.path}/system/mklittlefs
@@ -29,29 +30,32 @@ runtime.tools.pqt-elf2uf2.path={runtime.platform.path}/system/elf2uf2

 compiler.path={runtime.tools.pqt-gcc.path}/bin/

+compiler.libraries.ldflags=
+
 # Compile variables
 # -----------------

-compiler.warning_flags=-w
-compiler.warning_flags.none=-w
-compiler.warning_flags.default=
-compiler.warning_flags.more=-Wall
-compiler.warning_flags.all=-Wall -Wextra
+compiler.warning_flags=-Werror=return-type
+compiler.warning_flags.none=-Werror=return-type
+compiler.warning_flags.default=-Werror=return-type
+compiler.warning_flags.more=-Wall -Werror=return-type -Wno-ignored-qualifiers
+compiler.warning_flags.all=-Wall -Wextra -Werror=return-type -Wno-ignored-qualifiers

 compiler.defines={build.led} {build.usbstack_flags} -DCFG_TUSB_MCU=OPT_MCU_RP2040 -DUSB_VID={build.vid} -DUSB_PID={build.pid} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}'
 compiler.includes="-iprefix{runtime.platform.path}/" "@{runtime.platform.path}/lib/platform_inc.txt"
-compiler.flags=-Os -march=armv6-m -mcpu=cortex-m0plus -mthumb -ffunction-sections -fdata-sections -fno-exceptions
+compiler.flags=-march=armv6-m -mcpu=cortex-m0plus -mthumb -ffunction-sections -fdata-sections -fno-exceptions
 compiler.wrap="@{runtime.platform.path}/lib/platform_wrap.txt"
 compiler.libpico="{runtime.platform.path}/lib/libpico.a"
+compiler.libstdcpp="-lstdc++"

 compiler.c.cmd=arm-none-eabi-gcc
-compiler.c.flags=-c {compiler.defines} {compiler.flags} {compiler.includes} -std=gnu17 -g
+compiler.c.flags=-c {compiler.warning_flags} {compiler.defines} {compiler.flags} {compiler.includes} -std=gnu17 -g
 compiler.c.elf.cmd=arm-none-eabi-g++
-compiler.c.elf.flags={compiler.defines} {compiler.flags} -u _printf_float -u _scanf_float
+compiler.c.elf.flags={compiler.warning_flags} {compiler.defines} {compiler.flags} {build.flags.optimize} -u _printf_float -u _scanf_float
 compiler.S.cmd=arm-none-eabi-gcc
-compiler.S.flags=-c -g -x assembler-with-cpp -MMD {compiler.includes} -g
+compiler.S.flags=-c {compiler.warning_flags} -g -x assembler-with-cpp -MMD {compiler.includes} -g
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-c {compiler.defines} {compiler.flags} {compiler.includes} -fno-rtti -std=gnu++17 -g
+compiler.cpp.flags=-c {compiler.warning_flags} {compiler.defines} {compiler.flags} {compiler.includes} {build.flags.rtti} -std=gnu++17 -g

 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
@@ -79,6 +83,8 @@ compiler.elf2hex.extra_flags=
 # Board configuration, set in boards.txt.  Present here to ensure substitution works
 build.flash_length=
 build.eeprom_start=
+build.flags.optimize=-Os
+build.flags.rtti=-fno-rtti
 build.fs_start=
 build.fs_end=
 build.usbstack_flags=
@@ -86,20 +92,20 @@ build.usbstack_flags=
 build.boot2=boot2_generic_03h_4_padded_checksum

 # Allow Pico boards do be auto-discovered by the IDE
-discovery.rp2040.pattern="{runtime.tools.pqt-python3.path}/python3" "{runtime.platform.path}/tools/discovery.py"
+discovery.rp2040.pattern="{runtime.tools.pqt-python3.path}/python3" -I "{runtime.platform.path}/tools/discovery.py"


 # Compile patterns
 # ----------------

 ## Compile c files
-recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} {build.usbpid} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {includes} "{source_file}" -o "{object_file}"
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {build.flags.optimize} {includes} "{source_file}" -o "{object_file}"

 ## Compile c++ files
-recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {build.usbpid} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {includes} "{source_file}" -o "{object_file}"
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {build.flags.optimize} {includes} "{source_file}" -o "{object_file}"

 ## Compile S files
-recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} {build.usbpid} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {includes} "{source_file}" -o "{object_file}"
+recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} {build.usbpid} {build.usbpwr} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DBOARD_NAME="{build.board}" -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {build.debug_port} {build.debug_level} {includes} "{source_file}" -o "{object_file}"

 ## Create archives
 # archive_file_path is needed for backwards compatibility with IDE 1.6.5 or older, IDE 1.6.6 or newer overrides this value
@@ -107,13 +113,13 @@ archive_file_path={build.path}/{archive_file}
 recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}"

 ## Generate the linker map with specific flash sizes/locations
-recipe.hooks.linking.prelink.1.pattern="{runtime.tools.pqt-python3.path}/python3" "{runtime.platform.path}/tools/simplesub.py" --input "{runtime.platform.path}/lib/memmap_default.ld" --out "{build.path}/memmap_default.ld" --sub __FLASH_LENGTH__ {build.flash_length} --sub __EEPROM_START__ {build.eeprom_start} --sub __FS_START__ {build.fs_start} --sub __FS_END__ {build.fs_end}
+recipe.hooks.linking.prelink.1.pattern="{runtime.tools.pqt-python3.path}/python3" -I "{runtime.platform.path}/tools/simplesub.py" --input "{runtime.platform.path}/lib/memmap_default.ld" --out "{build.path}/memmap_default.ld" --sub __FLASH_LENGTH__ {build.flash_length} --sub __EEPROM_START__ {build.eeprom_start} --sub __FS_START__ {build.fs_start} --sub __FS_END__ {build.fs_end} --sub __RAM_LENGTH__ {build.ram_length}

 ## Compile the boot stage 2 blob
-recipe.hooks.linking.prelink.2.pattern="{compiler.path}{compiler.S.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -c "{runtime.platform.path}/assembly/{build.boot2}.S" "-I{runtime.platform.path}/pico-sdk/src/rp2040/hardware_regs/include/" "-I{runtime.platform.path}/pico-sdk/src/common/pico_binary_info/include" -o "{build.path}/boot2.o"
+recipe.hooks.linking.prelink.2.pattern="{compiler.path}{compiler.S.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} -c "{runtime.platform.path}/boot2/{build.boot2}.S" "-I{runtime.platform.path}/pico-sdk/src/rp2040/hardware_regs/include/" "-I{runtime.platform.path}/pico-sdk/src/common/pico_binary_info/include" -o "{build.path}/boot2.o"

 ## Combine gc-sections, archives, and objects
-recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" "-L{build.path}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} {compiler.ldflags} "-Wl,--script={build.path}/memmap_default.ld" "-Wl,-Map,{build.path}/{build.project_name}.map" -o "{build.path}/{build.project_name}.elf" -Wl,--start-group {object_files} "{build.path}/{archive_file}" "{build.path}/boot2.o" {compiler.libpico} -lm -lc -lstdc++ -lc -Wl,--end-group
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" "-L{build.path}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} {compiler.ldflags} "-Wl,--script={build.path}/memmap_default.ld" "-Wl,-Map,{build.path}/{build.project_name}.map" -o "{build.path}/{build.project_name}.elf" -Wl,--start-group {object_files} "{build.path}/{archive_file}" "{build.path}/boot2.o" {compiler.libraries.ldflags} {compiler.libpico} -lm -lc {compiler.libstdcpp} -lc -Wl,--end-group

 ## Create output (UF2 file)
 recipe.objcopy.uf2.pattern="{runtime.tools.pqt-elf2uf2.path}/elf2uf2" "{build.path}/{build.project_name}.elf" "{build.path}/{build.project_name}.uf2"
@@ -138,7 +144,7 @@ tools.uf2conv.cmd={runtime.platform.path}/system/python3/python3
 tools.uf2conv.upload.protocol=uf2
 tools.uf2conv.upload.params.verbose=
 tools.uf2conv.upload.params.quiet=
-tools.uf2conv.upload.pattern="{cmd}" "{runtime.platform.path}/tools/uf2conv.py" --serial "{serial.port}" --family RP2040 --deploy "{build.path}/{build.project_name}.uf2"
+tools.uf2conv.upload.pattern="{cmd}" -I "{runtime.platform.path}/tools/uf2conv.py" --serial "{serial.port}" --family RP2040 --deploy "{build.path}/{build.project_name}.uf2"


 #tools.picoprobe.cmd={runtime.tools.pqt-openocd.path}
@@ -146,4 +152,10 @@ tools.picoprobe.cmd={runtime.platform.path}/system/openocd
 tools.picoprobe.upload.protocol=picoprobe
 tools.picoprobe.upload.params.verbose=
 tools.picoprobe.upload.params.quiet=
-tools.picoprobe.upload.pattern="{cmd}/bin/openocd" -f "interface/picoprobe.cfg" -f "target/rp2040.cfg" -s "{cmd}/share/openocd/scripts" -c "program {build.path}/{build.project_name}.elf verify reset exit"
+tools.picoprobe.upload.pattern="{cmd}/bin/openocd" -f "interface/picoprobe.cfg" -f "target/rp2040.cfg" -s "{cmd}/share/openocd/scripts" -c "program {{build.path}/{build.project_name}.elf} verify reset exit"
+
+tools.picodebug.cmd={runtime.platform.path}/system/openocd
+tools.picodebug.upload.protocol=pico-debug
+tools.picodebug.upload.params.verbose=
+tools.picodebug.upload.params.quiet=
+tools.picodebug.upload.pattern="{cmd}/bin/openocd" -f "board/pico-debug.cfg" -s "{cmd}/share/openocd/scripts" -c "program {{build.path}/{build.project_name}.elf} verify reset exit"
@@ -19,8 +19,9 @@ function skip_ino()
 /hid_keyboard/
 /msc_external_flash/
 /msc_external_flash_sdcard/
-/msc_sdfat/
+/msc_internal_flash_samd/
 /msc_sd/
+/msc_sdfat/
 /midi_pizza_box_dj/
 EOL
        echo $ino | grep -q -F "$skiplist"
@@ -9,16 +9,13 @@ function skip_ino()
    read -d '' skiplist << EOL || true
 /#attic/
 /AvrAdcLogger/
-/BackwardCompatibility/
 /examplesV1/
-/ExFatFormatter/
-/ExFatLogger/
-/ExFatUnicodeTest/
 /RtcTimestampTest/
 /SoftwareSpi/
-/STM32Test/
+/TeensyDmaAdcLogger/
 /TeensyRtcTimestamp/
 /TeensySdioDemo/
+/TeensySdioLogger/
 /UserChipSelectFunction/
 /UserSPIDriver/
 /Adafruit_TinyUSB_Arduino/
@@ -26,6 +23,7 @@ function skip_ino()
 /p08_DigitalHourglass/
 /p13_TouchSensorLamp/
 /StringComparisonOperators/
+/PDMSerialPlotter/
 EOL
    echo $ino | grep -q -F "$skiplist"
    echo $(( 1 - $? ))
@@ -2,7 +2,7 @@

 for dir in ./cores/rp2040 ./libraries/EEPROM ./libraries/I2S \
           ./libraries/LittleFS/src ./libraries/LittleFS/examples \
-           ./libraries/rp2040 ./libraries/SD ./libraries/SdFat \
+           ./libraries/rp2040 ./libraries/SD ./libraries/ESP8266SdFat \
           ./libraries/Servo ./libraries/SPI ./libraries/Wire; do
    find $dir -type f \( -name "*.c" -o -name "*.h" -o -name "*.cpp" \) -a  \! -path '*api*' -exec astyle --suffix=none --options=./tests/astyle_core.conf \{\} \;
    find $dir -type f -name "*.ino" -exec astyle --suffix=none --options=./tests/astyle_examples.conf \{\} \;
@@ -25,11 +25,15 @@ rely on existence of `sed` command.

 ## makeboards.py
 Generates `boards.txt` programmatically.  Never edit the `boards.txt` file
-manually, use `python3 tools/makeboards.py > boards.py`.  Change the script
+manually, use `python3 tools/makeboards.py`.  Change the script
 as necessary to add any add'l fields or menus required.  Used because the
 `boards.txt` file is very repetitive and it's safer to generate with code
 than by hand.

+## makever.py
+Updates the version info prior to a release in platform.txt, package.json,
+and the version header.   Run from root of the repo.
+
 ## libpico/make-libpico.sh
 Builds the libpico.a file as well as the bootloader stage2 binaries.
 Run whenever the pico-sdk is updated.
@@ -0,0 +1 @@
+This directory contains JSON board definitions for use with Platform.IO
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_FEATHER_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_feather",
+        "boot2_source": "boot2_w25x10cl_4_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x80f1",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "Feather RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Feather RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_ITSYBITSY_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_itsybitsy",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x80fd",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "ItsyBitsy RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "ItsyBitsy RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_KB2040_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_kb2040",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x8105",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "KB2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "KB2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_MACROPAD_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_macropad2040",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x8107",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "MacroPad RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "MacroPad RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_QTPY_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_qtpy",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x80f7",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "QT Py RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "QT Py RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_STEMMAFRIEND_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_stemmafriend",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x80e3",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "STEMMA Friend RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "STEMMA Friend RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_ADAFRUIT_TRINKEYQT_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "adafruit_trinkeyrp2040qt",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x239a",
+        "usb_pid": "0x8109",
+        "usb_manufacturer": "Adafruit",
+        "usb_product": "Trinkey RP2040 QT"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Trinkey RP2040 QT",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Adafruit"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_NANO_RP2040_CONNECT -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "arduino_nano_connect",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2341",
+        "usb_pid": "0x0058",
+        "usb_manufacturer": "Arduino",
+        "usb_product": "Nano RP2040 Connect"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Nano RP2040 Connect",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 16777216,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Arduino"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CHALLENGER_2040_LORA_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "challenger_2040_lora",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x1023",
+        "usb_manufacturer": "iLabs",
+        "usb_product": "Challenger 2040 LoRa"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Challenger 2040 LoRa",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "iLabs"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CHALLENGER_2040_LTE_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=500",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "challenger_2040_lte",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x100b",
+        "usb_manufacturer": "iLabs",
+        "usb_product": "Challenger 2040 LTE"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Challenger 2040 LTE",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "iLabs"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CHALLENGER_2040_WIFI_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "challenger_2040_wifi",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x1006",
+        "usb_manufacturer": "iLabs",
+        "usb_product": "Challenger 2040 WiFi"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Challenger 2040 WiFi",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "iLabs"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CHALLENGER_NB_2040_WIFI_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=500",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "challenger_nb_2040_wifi",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x100b",
+        "usb_manufacturer": "iLabs",
+        "usb_product": "Challenger NB 2040 WiFi"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Challenger NB 2040 WiFi",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 8388608,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "iLabs"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CYTRON_MAKER_NANO_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "cytron_maker_nano_rp2040",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x100f",
+        "usb_manufacturer": "Cytron",
+        "usb_product": "Maker Nano RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Maker Nano RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 2097152,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Cytron"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_CYTRON_MAKER_PI_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "cytron_maker_pi_rp2040",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x1000",
+        "usb_manufacturer": "Cytron",
+        "usb_product": "Maker Pi RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Maker Pi RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 2097152,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Cytron"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_DFROBOT_BEETLE_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "dfrobot_beetle_rp2040",
+        "boot2_source": "boot2_w25q080_2_padded_checksum.S",
+        "usb_vid": "0x3343",
+        "usb_pid": "0x4253",
+        "usb_manufacturer": "DFRobot",
+        "usb_product": "Beetle RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Beetle RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 2097152,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "DFRobot"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_FLYBOARD2040_CORE -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=500",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "flyboard2040_core",
+        "boot2_source": "boot2_generic_03h_4_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0x008a",
+        "usb_manufacturer": "DeRuiLab",
+        "usb_product": "FlyBoard2040Core"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "FlyBoard2040Core",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "DeRuiLab"
+}
@@ -0,0 +1,52 @@
+{
+  "build": {
+    "core": "earlephilhower",
+    "cpu": "cortex-m0plus",
+    "extra_flags": "-D ARDUINO_GENERIC_RP2040 -DARDUINO_ARCH_RP2040 -DUSBD_MAX_POWER_MA=250",
+    "f_cpu": "133000000L",
+    "hwids": [
+      [
+        "0x2E8A",
+        "0x00C0"
+      ]
+    ],
+    "mcu": "rp2040",
+    "arduino": {
+      "earlephilhower": {
+        "variant": "generic",
+        "boot2_source": "boot2_generic_03h_4_padded_checksum.S",
+        "usb_vid": "0x2e8a",
+        "usb_pid": "0xf00a",
+        "usb_manufacturer": "Generic",
+        "usb_product": "RP2040"
+      }
+    }
+  },
+  "debug": {
+    "jlink_device": "RP2040_M0_0",
+    "openocd_target": "rp2040.cfg",
+    "svd_path": "rp2040.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "RP2040",
+  "upload": {
+    "maximum_ram_size": 270336,
+    "maximum_size": 16777216,
+    "require_upload_port": true,
+    "native_usb": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": false,
+    "protocol": "picotool",
+    "protocols": [
+      "cmsis-dap",
+      "jlink",
+      "raspberrypi-swd",
+      "picotool",
+      "picoprobe"
+    ]
+  },
+  "url": "https://www.raspberrypi.org/products/raspberry-pi-pico/",
+  "vendor": "Generic"
+}
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`This directory contains JSON board definitions for use with Platform.IO`