Add warning not to edit boards.txt (#383 )

Remove redundant board.mcu in boards.txt, fix precompiled libs (#382 )
* Remove redundant/wrong second board.mcu in boards.txt Fixes #380 Boards.txt had the setting board.mcu twice. The first one was correct, while the second one wasn't and shouldn't have been there. Remove it. * Include fix from @rei-vilo in #381
2021-12-23 08:09:59 -08:00 · 2021-12-23 07:55:34 -08:00 · 2021-12-23 07:41:34 -08:00 · 2021-12-14 18:59:24 -08:00 · 2021-12-10 04:11:22 -08:00 · 2021-12-09 09:55:09 -08:00
97 changed files with 10878 additions and 899 deletions
@@ -37,6 +37,8 @@ jobs:
    - name: Check boards.txt was not edited after makeboards.py
      run: |
        ./tools/makeboards.py > boards.txt
+        # 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
@@ -1,8 +1,10 @@
-# Arduino-Pico [![Join the chat at https://gitter.im/arduino-pico/community](https://badges.gitter.im/arduino-pico/community.svg)](https://gitter.im/arduino-pico/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+# Arduino-Pico
+[![Release](https://img.shields.io/github/v/release/earlephilhower/arduino-pico?style=plastic)](https://github.com/earlephilhower/arduino-pico/releases)
+[![Gitter](https://img.shields.io/gitter/room/earlephilhower/arduino-pico?style=plastic)](https://gitter.im/arduino-pico/community)

 Raspberry Pi Pico Arduino core, for all RP2040 boards

-This is a port of the RP2040 (Raspberry Pi Pico processor) to the Arduino ecosystem. It uses the bare Raspberry Pi Pico SDK and a custom GCC 10.2/Newlib 4.0 toolchain.
+This is a port of the RP2040 (Raspberry Pi Pico processor) to the Arduino ecosystem. It uses the bare Raspberry Pi Pico SDK and a custom GCC 10.3/Newlib 4.0 toolchain.

 # Documentation
 See https://arduino-pico.readthedocs.io/en/latest/ along with the examples for more detailed usage information.
@@ -11,9 +13,21 @@ See https://arduino-pico.readthedocs.io/en/latest/ along with the examples for m
 * Raspberry Pi Pico
 * Adafruit Feather RP2040
 * Adafruit ItsyBitsy RP2040
+* Adafruit Macropad RP2040
 * Adafruit QTPy RP2040
 * Adafruit STEMMA Friend RP2040
 * Adafruit Trinkey RP2040 QT
+* Arduino Nano RP2040 Connect (preliminary)
+* Cytron Maker Pi RP2040
+* Cytron Maker Nano RP2040
+* Invector Labs Challenger RP2040 WiFi
+* Invector Labs Challenger NB RP2040 WiFi
+* Invector Labs Challenger RP2040 LTE
+* Invector Labs RPICO32
+* Melopero Shake RP2040
+* SparkFun ProMicro RP2040
+* uPesy RP2040 DevKit
+* WIZnet W5100S-EVB-Pico
 * Generic (configurable flash, I/O pins)

 # Installing via Arduino Boards Manager
@@ -97,8 +111,25 @@ 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)
@@ -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
@@ -24,17 +24,13 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
-// Wacky deprecated AVR compatibility functions
-#include "stdlib_noniso.h"
-
+#include "stdlib_noniso.h" // Wacky deprecated AVR compatibility functions
 #include "api/ArduinoAPI.h"
+#include "api/itoa.h" // ARM toolchain doesn't provide itoa etc, provide them
 #include <pins_arduino.h>
-
-
-// Required for the port*Register macros
-#include "hardware/gpio.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()
@@ -44,8 +40,10 @@
 #endif // abs
 #ifdef __cplusplus
 using std::abs;
+using std::round;
 #else
-#define abs(x) ((x)>0?(x):-(x))
+#define abs(x) ({ __typeof__(x) _x = (x); _x >= 0 ? _x : -_x; })
+#define round(x) ({ __typeof__(x) _x = (x); _x >= 0 ? (long)(_x + 0.5) : (long)(_x - 0.5); })
 #endif

 #ifdef __cplusplus
@@ -61,10 +59,6 @@ extern "C" {
 void interrupts();
 void noInterrupts();

-// GPIO change/value interrupts
-void attachInterrupt(pin_size_t pin, voidFuncPtr callback, PinStatus mode);
-void detachInterrupt(pin_size_t pin);
-
 // AVR compatibility macros...naughty and accesses the HW directly
 #define digitalPinToPort(pin)       (0)
 #define digitalPinToBitMask(pin)    (1UL << (pin))
@@ -75,28 +69,14 @@ void detachInterrupt(pin_size_t pin);
 #define portInputRegister(port)     ((volatile uint32_t*) sio_hw->gpio_in)
 #define portModeRegister(port)      ((volatile uint32_t*) sio_hw->gpio_oe)

-// IO config
-void pinMode(pin_size_t pinNumber, PinMode pinMode);
-
-// SIO (GPIO)
-void digitalWrite(pin_size_t pinNumber, PinStatus status);
-PinStatus digitalRead(pin_size_t pinNumber);
-
-// ADC
-int analogRead(pin_size_t pinNumber);
+// ADC RP2040-specific calls
 float analogReadTemp();  // Returns core temp in Centigrade

-// PWM
-void analogWrite(pin_size_t pinNumber, int value);
+// PWM RP2040-specific calls
 void analogWriteFreq(uint32_t freq);
 void analogWriteRange(uint32_t range);
 void analogWriteResolution(int res);

-// Timing
-void delay(unsigned long);
-void delayMicroseconds(unsigned int us);
-unsigned long millis();
-
 #ifdef __cplusplus
 } // extern "C"
 #endif
@@ -116,7 +96,7 @@ unsigned long millis();
 #endif

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

 // Template which will evaluate at *compile time* to a single 32b number
@@ -127,8 +107,4 @@ constexpr uint32_t __bitset(const int (&a)[N], size_t i = 0U) {
 }
 #endif

-
-// ARM toolchain doesn't provide itoa etc, provide them
-#include "api/itoa.h"
-
 #endif // Arduino_h
@@ -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>
@@ -114,8 +116,21 @@ private:
    static constexpr int _GOTOSLEEP = 0x66666666;
 };

+class RP2040;
+extern RP2040 rp2040;
 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 +142,44 @@ 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();
    }

    // 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)
@@ -122,52 +121,69 @@ 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
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
-uint8_t const * tud_hid_descriptor_report_cb(void) {
+uint8_t const * tud_hid_descriptor_report_cb(uint8_t instance) {
+    (void) instance;
    return GetDescHIDReport(nullptr);
 }


 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)
        };
@@ -175,40 +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_PROTOCOL_NONE, hid_report_len, EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10)
+            TUD_HID_DESCRIPTOR(hid_itf, 0, HID_ITF_PROTOCOL_NONE, hid_report_len, EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 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;
@@ -230,15 +248,7 @@ const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
    };

    if (!idString[0]) {
-        // Get ID string into human readable serial number on the first pass
-        pico_unique_board_id_t id;
-        pico_get_unique_board_id(&id);
-        idString[0] = 0;
-        for (auto i = 0; i < PICO_UNIQUE_BOARD_ID_SIZE_BYTES; i++) {
-            char hx[3];
-            sprintf(hx, "%02X", id.id[i]);
-            strcat(idString, hx);
-        }
+        pico_get_unique_board_id_string(idString, sizeof(idString));
    }

    uint8_t len;
@@ -284,6 +294,7 @@ void __USBStart() {
    }

    mutex_init(&__usb_mutex);
+
    tusb_init();

    irq_set_exclusive_handler(USB_TASK_IRQ, usb_irq);
@@ -296,8 +307,9 @@ void __USBStart() {
 // Invoked when received GET_REPORT control request
 // Application must fill buffer report's content and return its length.
 // Return zero will cause the stack to STALL request
-uint16_t tud_hid_get_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen) {
-    // TODO not Implemented
+extern "C" uint16_t tud_hid_get_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen) {
+    // TODO not implemented
+    (void) instance;
    (void) report_id;
    (void) report_type;
    (void) buffer;
@@ -308,8 +320,9 @@ uint16_t tud_hid_get_report_cb(uint8_t report_id, hid_report_type_t report_type,

 // Invoked when received SET_REPORT control request or
 // received data on OUT endpoint ( Report ID = 0, Type = 0 )
-void tud_hid_set_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize) {
+extern "C" void tud_hid_set_report_cb(uint8_t instance, uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize) {
    // TODO set LED based on CAPLOCK, NUMLOCK etc...
+    (void) instance;
    (void) report_id;
    (void) report_type;
    (void) buffer;
@@ -317,4 +330,3 @@ void tud_hid_set_report_cb(uint8_t report_id, hid_report_type_t report_type, uin
 }

 #endif
-
@@ -96,7 +96,9 @@ void SerialUART::begin(unsigned long baud, uint16_t config) {
    gpio_set_function(_tx, GPIO_FUNC_UART);
    gpio_set_function(_rx, GPIO_FUNC_UART);
    _running = true;
-    _peek = -1;
+    while (!_swFIFO.empty()) {
+        (void)_swFIFO.pop(); // Just throw out anything in our old FIFO
+    }
 }

 void SerialUART::end() {
@@ -107,16 +109,30 @@ void SerialUART::end() {
    _running = false;
 }

+// Transfers any data in the HW FIFO into our SW one, up to 32 bytes
+void SerialUART::_pumpFIFO() {
+    while ((_swFIFO.size() < 32) && (uart_is_readable(_uart))) {
+        _swFIFO.push(uart_getc(_uart));
+    }
+}
+
 int SerialUART::peek() {
    CoreMutex m(&_mutex);
    if (!_running || !m) {
        return -1;
    }
-    if (_peek >= 0) {
-        return _peek;
+    _pumpFIFO();
+    // If there's something in the FIFO now, just peek at it
+    if (_swFIFO.size()) {
+        return _swFIFO.front();
    }
-    _peek = uart_getc(_uart);
-    return _peek;
+    // The SW FIFO is empty, read the HW one until the timeout
+    if (uart_is_readable_within_us(_uart, _timeout * 1000)) {
+        // We got one char, put it in the FIFO (which will now have exactly 1 byte) and return it
+        _swFIFO.push(uart_getc(_uart));
+        return _swFIFO.front();
+    }
+    return -1; // Nothing available before timeout
 }

 int SerialUART::read() {
@@ -124,12 +140,18 @@ int SerialUART::read() {
    if (!_running || !m) {
        return -1;
    }
-    if (_peek >= 0) {
-        int ret = _peek;
-        _peek = -1;
+    _pumpFIFO();
+    if (_swFIFO.size()) {
+        auto ret = _swFIFO.front();
+        _swFIFO.pop();
        return ret;
    }
-    return uart_getc(_uart);
+    // The SW FIFO is empty, read the HW one until the timeout
+    if (uart_is_readable_within_us(_uart, _timeout * 1000)) {
+        // We got one char, return it (FIFO will still be empty
+        return uart_getc(_uart);
+    }
+    return -1; // Timeout
 }

 int SerialUART::available() {
@@ -137,7 +159,8 @@ int SerialUART::available() {
    if (!_running || !m) {
        return 0;
    }
-    return (uart_is_readable(_uart)) ? 1 : 0;
+    _pumpFIFO();
+    return _swFIFO.size();
 }

 int SerialUART::availableForWrite() {
@@ -145,6 +168,7 @@ int SerialUART::availableForWrite() {
    if (!_running || !m) {
        return 0;
    }
+    _pumpFIFO();
    return (uart_is_writable(_uart)) ? 1 : 0;
 }

@@ -153,7 +177,8 @@ void SerialUART::flush() {
    if (!_running || !m) {
        return;
    }
-    uart_default_tx_wait_blocking();
+    _pumpFIFO();
+    uart_tx_wait_blocking(_uart);
 }

 size_t SerialUART::write(uint8_t c) {
@@ -161,6 +186,7 @@ size_t SerialUART::write(uint8_t c) {
    if (!_running || !m) {
        return 0;
    }
+    _pumpFIFO();
    uart_putc_raw(_uart, c);
    return 1;
 }
@@ -170,6 +196,7 @@ size_t SerialUART::write(const uint8_t *p, size_t len) {
    if (!_running || !m) {
        return 0;
    }
+    _pumpFIFO();
    size_t cnt = len;
    while (cnt) {
        uart_putc_raw(_uart, *p);
@@ -23,6 +23,7 @@
 #include <Arduino.h>
 #include "api/HardwareSerial.h"
 #include <stdarg.h>
+#include <queue>
 #include "CoreMutex.h"

 extern "C" typedef struct uart_inst uart_inst_t;
@@ -61,8 +62,10 @@ private:
    uart_inst_t *_uart;
    pin_size_t _tx, _rx;
    int _baud;
-    int _peek;
    mutex_t _mutex;
+
+    void _pumpFIFO();
+    std::queue<uint8_t> _swFIFO;
 };

 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"
@@ -70,7 +70,7 @@ int SerialUSB::peek() {
    }

    uint8_t c;
-    return tud_cdc_peek(0, &c) ? (int) c : -1;
+    return tud_cdc_peek(&c) ? (int) c : -1;
 }

 int SerialUSB::read() {
@@ -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_ */
@@ -88,6 +88,7 @@ void tone(uint8_t pin, unsigned int frequency, unsigned long duration) {
            newTone->alarm = 0;
        }
    }
+    pio_sm_clear_fifos(newTone->pio, newTone->sm); // Remove any old updates that haven't yet taken effect
    pio_sm_put_blocking(newTone->pio, newTone->sm, RP2040::usToPIOCycles(us));
    pio_sm_set_enabled(newTone->pio, newTone->sm, true);

@@ -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) {
@@ -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) {
@@ -101,7 +121,10 @@ auto_init_mutex(_adcMutex);
 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;
    }
@@ -109,7 +132,7 @@ extern "C" int analogRead(pin_size_t pin) {
        adc_init();
    }
    adc_gpio_init(pin);
-    adc_select_input(pin - A0);
+    adc_select_input(pin - minPin);
    return adc_read();
 }

@@ -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);
@@ -63,6 +64,7 @@ extern "C" void digitalWrite(pin_size_t ulPin, PinStatus ulVal) {
        DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
        return;
    }
+    gpio_set_function(ulPin, GPIO_FUNC_SIO);
    if (_pm[ulPin] == INPUT_PULLDOWN) {
        if (ulVal == LOW) {
            gpio_set_dir(ulPin, false);
@@ -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>
@@ -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".
@@ -33,6 +33,7 @@ SPI (SPI0), SPI1 (SPI1)
 .. code:: cpp

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

@@ -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.
@@ -38,3 +38,15 @@ using the SDK, the Arduino core may have issues running properly with
 them.  In particular, anything involving flash writes (i.e. EEPROM,
 filesystems) will probably crash due to CORE1 attempting to read from
 flash while CORE0 is writing to it.
+
+PIOASM (Compiling for the PIO processors)
+-----------------------------------------
+A precompiled version of the PIOASM tool is included in the download
+package and can be run from the CLI.
+
+There is also a fully online version of PIOASM that runs in a web
+browser without any CLI required, thanks to @jake653: https://wokwi.com/tools/pioasm
+(GitHub source: https://github.com/wokwi/pioasm-wasm)
+
+There is also Docker code available for the tool at:
+https://github.com/kahara/pioasm-docker
@@ -9,12 +9,27 @@
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
-setup1  KEYWORD2
-loop2   KEYWORD2
+
+setup1	KEYWORD2
+loop2	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
@@ -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    1
-#define PICO_SDK_VERSION_REVISION 2
-#define PICO_SDK_VERSION_STRING   "1.1.2"
+#define PICO_SDK_VERSION_MINOR    3
+#define PICO_SDK_VERSION_REVISION 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 +14,22 @@
 -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_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 +37,6 @@
 -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 +46,9 @@
 -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
@@ -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 +1,68 @@
+/*
+  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;
+
+  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 +1,205 @@
+
+
+#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"
+
+// Hardware peripherals used
+uint dmaChannel = 0;
+PIO pio = pio0;
+uint sm = 0;
+
+// 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)
+{
+}
+
+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; 
+  uint offset = pio_add_program(pio, &pdm_pio_program);
+  pdm_pio_program_init(pio, sm, offset, _clkPin, _dinPin, clkDiv);
+
+  // Wait for microphone 
+  delay(100);
+
+  // Configure DMA for transferring PIO rx buffer to raw buffers
+  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, sm, 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);
+  irq_set_exclusive_handler(DMA_IRQ_0, dmaHandler);
+  irq_set_enabled(DMA_IRQ_0, true);
+
+  dma_channel_configure(dmaChannel, &c,
+    rawBuffer[rawBufferIndex],        // Destinatinon pointer
+    &pio->rxf[sm],      // 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 +1,41 @@
+
+.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);
+
+  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 +1,56 @@
+// -------------------------------------------------- //
+// 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);
+  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
@@ -135,6 +135,7 @@ void Servo::writeMicroseconds(int value) {
    value = constrain(value, _minUs, _maxUs);
    _valueUs = value;
    if (_attached) {
+        pio_sm_clear_fifos(_pio, _smIdx); // Remove any old updates that haven't yet taken effect
        pio_sm_put_blocking(_pio, _smIdx, RP2040::usToPIOCycles(value) / 3);
    }
 }
@@ -123,7 +123,7 @@ 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);
@@ -154,6 +154,10 @@ 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 +181,8 @@ void TwoWire::end() {
        return;
    }
    i2c_deinit(_i2c);
+    pinMode(_sda, INPUT);
+    pinMode(_scl, INPUT);
    _running = false;
    _txBegun = false;
 }
@@ -188,6 +194,7 @@ void TwoWire::beginTransmission(uint8_t addr) {
    }
    _addr = addr;
    _buffLen = 0;
+    _buffOff = 0;
    _txBegun = true;
 }

@@ -196,7 +203,10 @@ 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 +294,7 @@ 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;
    }
@@ -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);
+}
@@ -7,7 +7,8 @@ void setup() {
 }

 void loop() {
-  for (int i = 100; i < 10000; i += 5) {
+  for (int i = 100; i < 10000; i += 1) {
    tone(TONEPIN, i);
+    delayMicroseconds(20);
  }
 }
@@ -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": "1.10909.0",
+  "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"
+  }
 }
@@ -23,6 +23,39 @@
                  {
                     "name": "Adafruit Feather RP2040"
                  },
+                  {
+                     "name": "Adafruit ItsyBitsy RP2040"
+                  },
+                  {
+                     "name": "Adafruit Macropad RP2040"
+                  },
+                  {
+                     "name": "Adafruit QTPy RP2040"
+                  },
+                  {
+                     "name": "Adafruit STEMMA Friend RP2040"
+                  },
+                  {
+                     "name": "Adafruit Trinkey RP2040 QT"
+                  },
+                  {
+                     "name": "Arduino Nano RP2040 Connect"
+                  },
+                  {
+                     "name": "Cytron Maker Nano RP2040"
+                  },
+                  {
+                     "name": "Cytron Maker Pi RP2040"
+                  },
+                  {
+                     "name": "SparkFun ProMicro RP2040"
+                  },
+                  {
+                     "name": "Melopero Shake RP2040"
+                  },
+                  {
+                     "name": "uPesy RP2040 DevKit"
+                  },
                  {
                     "name": "Generic RP2040 Module"
                  }
@@ -30,22 +63,22 @@
               "toolsDependencies": [
                  {
                     "packager": "rp2040",
-                     "version": "1.1.0-a-81a1771",
+                     "version": "1.3.1-a-7855b0c",
                     "name": "pqt-gcc"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.1.0-a-81a1771",
+                     "version": "1.3.1-a-7855b0c",
                     "name": "pqt-mklittlefs"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.1.0-a-81a1771",
+                     "version": "1.3.1-a-7855b0c",
                     "name": "pqt-elf2uf2"
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.1.0-a-81a1771",
+                     "version": "1.3.1-a-7855b0c",
                     "name": "pqt-pioasm"
                  },
                  {
@@ -55,7 +88,7 @@
                  },
                  {
                     "packager": "rp2040",
-                     "version": "1.1.0-a-81a1771",
+                     "version": "1.3.1-a-7855b0c",
                     "name": "pqt-openocd"
                  }
               ],
@@ -66,57 +99,57 @@
         ],
         "tools": [
            {
-               "version": "1.1.0-a-81a1771",
+               "version": "1.3.1-a-7855b0c",
               "name": "pqt-openocd",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/aarch64-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "checksum": "SHA-256:5064727a074c8bc8dff988e82bc2460c5f5610a04ec0a61ba233bdabe0499a24",
-                     "size": "6075189"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/aarch64-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "checksum": "SHA-256:62662b74a7cbbb5db0998987585d74a3261c3e6f0c1440d7449505832020e095",
+                     "size": "6224364"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/arm-linux-gnueabihf.openocd-d58c2ef5e.210328.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.openocd-d58c2ef5e.210328.tar.gz",
-                     "checksum": "SHA-256:12e61ebe727cb188fab25af174f0696ef86d629701f03f189965a725bd51275b",
-                     "size": "6076094"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/arm-linux-gnueabihf.openocd-e3428fadb.210706.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.openocd-e3428fadb.210706.tar.gz",
+                     "checksum": "SHA-256:15b188279382ee182253984ed45785f3a15387576583a1c6bff2c71d724ff76a",
+                     "size": "5931976"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "checksum": "SHA-256:eaa89ac30556aaed5cd09fff4f46435f5a79c58d2060069db7606f9ecc9529ef",
-                     "size": "6076262"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "checksum": "SHA-256:40a7a417b46875b2ccff582309b0e8ffcfd5c038ad1dc1775d53c683708c363c",
+                     "size": "5728004"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-w64-mingw32.openocd-d58c2ef5e.210328.zip",
-                     "archiveFileName": "i686-w64-mingw32.openocd-d58c2ef5e.210328.zip",
-                     "checksum": "SHA-256:65b8c96b94f1cc3ff13eb853138efb3a465150fb02d07c792f8b235d43b05061",
-                     "size": "6378934"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-w64-mingw32.openocd-e3428fadb.210706.zip",
+                     "archiveFileName": "i686-w64-mingw32.openocd-e3428fadb.210706.zip",
+                     "checksum": "SHA-256:945cf4b0de879b935e05af2f438a6964949fbbf6d163e96e507939c55cafbff0",
+                     "size": "8539935"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-apple-darwin14.openocd-d58c2ef5e.210328.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.openocd-d58c2ef5e.210328.tar.gz",
-                     "checksum": "SHA-256:b8a759d7ac20643641285b0b05473b853e50739dd254b2294f5d1802ff0e15ca",
-                     "size": "6076324"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-apple-darwin14.openocd-e3428fadb.210706.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.openocd-e3428fadb.210706.tar.gz",
+                     "checksum": "SHA-256:b28b54580b16e6d7f0229a653acf68aeab8cc3270d8b9dcaf178b8b8c0aafcb7",
+                     "size": "2006182"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.openocd-d58c2ef5e.210328.tar.gz",
-                     "checksum": "SHA-256:9ff31fc92d6f86503d1750d009fec7e7c8c185c7956b140c4b78ee029d31c19c",
-                     "size": "6076342"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.openocd-e3428fadb.210706.tar.gz",
+                     "checksum": "SHA-256:90aec3a7818697e04e798a0470133caf62e7583a48f7ae3848b9b536c3180b0b",
+                     "size": "6154827"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-w64-mingw32.openocd-d58c2ef5e.210328.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.openocd-d58c2ef5e.210328.zip",
-                     "checksum": "SHA-256:8f1ddd64b0a6f83f94437d509bb28cdd45ad481bb161c170d57a6736f75087ec",
-                     "size": "6378956"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.openocd-e3428fadb.210706.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.openocd-e3428fadb.210706.zip",
+                     "checksum": "SHA-256:86e0341d50723d5e0c2969a903e911273e3b70ed5b794284b7d7ec7a1f09ee2f",
+                     "size": "8929726"
                  }
               ]
            },
@@ -183,221 +216,221 @@
               ]
            },
            {
-               "version": "1.1.0-a-81a1771",
+               "version": "1.3.1-a-7855b0c",
               "name": "pqt-gcc",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/aarch64-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "checksum": "SHA-256:04eaa4a1c0596b1a47252150323af0a4def791cb9da20634872becbdbdfef979",
-                     "size": "101469960"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/aarch64-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "checksum": "SHA-256:32f2a28e0f12bd1c8aaefa10bc2646f0f058b77d0030bec3e1e0ec89409d2380",
+                     "size": "103186082"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/arm-linux-gnueabihf.arm-none-eabi-81a1771.210328.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.arm-none-eabi-81a1771.210328.tar.gz",
-                     "checksum": "SHA-256:43e739a2219ef9e9d16d1c81d4252c22a7392315325046d450542a3df6b35b96",
-                     "size": "94164344"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/arm-linux-gnueabihf.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "checksum": "SHA-256:0cca5b4c429acf26eeb093bf21b16c2265fd6c04aafe91ceb304dfee35a662d7",
+                     "size": "95859088"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "checksum": "SHA-256:b5961edde0d58b7dbc5c7b1c8fbf9d461fe2a7204f5282f6b5336a5d435efd3b",
-                     "size": "104228428"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "checksum": "SHA-256:9a1ba7cdcb11d817ddbcb60d53f5b804b787a7a3c2e0bc5a33e86b8bbf653391",
+                     "size": "105956199"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-w64-mingw32.arm-none-eabi-81a1771.210328.zip",
-                     "archiveFileName": "i686-w64-mingw32.arm-none-eabi-81a1771.210328.zip",
-                     "checksum": "SHA-256:347fdc73b9f99e529c70598f9bf2ebc85adad098a24206cf89f8297a40e44d60",
-                     "size": "103803990"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-w64-mingw32.arm-none-eabi-7855b0c.210706.zip",
+                     "archiveFileName": "i686-w64-mingw32.arm-none-eabi-7855b0c.210706.zip",
+                     "checksum": "SHA-256:5b06d0dcfcf78c83b85aadbcbd8b6e3301b60acd14d6319e066e125586331aac",
+                     "size": "105493451"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-apple-darwin14.arm-none-eabi-81a1771.210328.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.arm-none-eabi-81a1771.210328.tar.gz",
-                     "checksum": "SHA-256:c035b48e0a42b90c9a356b43813671597a6c0f1cab4fb97a0dfcb2bbc7eb5390",
-                     "size": "105653466"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-apple-darwin14.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "checksum": "SHA-256:6d4dfd0e032df43687683504b747a0010cea53b2d86f4662f72997fd0cbd8b1a",
+                     "size": "107371801"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.arm-none-eabi-81a1771.210328.tar.gz",
-                     "checksum": "SHA-256:b13ea47f3c62b65eda3acd40f43a392e8799696d821bc5c114e60950ab125bc0",
-                     "size": "106132177"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.arm-none-eabi-7855b0c.210706.tar.gz",
+                     "checksum": "SHA-256:791b6386a6b6742d627af3277f401db7bb2b407852c8b3f49eaee30fcc5ceb8a",
+                     "size": "107845636"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-w64-mingw32.arm-none-eabi-81a1771.210328.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.arm-none-eabi-81a1771.210328.zip",
-                     "checksum": "SHA-256:06b19d7f9e9e2c1c3fc87d85af144b02591e3c5643c67521ff9807cdb5f6ecc7",
-                     "size": "108657552"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.arm-none-eabi-7855b0c.210706.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.arm-none-eabi-7855b0c.210706.zip",
+                     "checksum": "SHA-256:7f8b591902e9f164904974bb8224808371b025affaf7cbffdeb3f3ff259b9464",
+                     "size": "110342777"
                  }
               ]
            },
            {
-               "version": "1.1.0-a-81a1771",
+               "version": "1.3.1-a-7855b0c",
               "name": "pqt-elf2uf2",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/aarch64-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:5df8c7c132bc0f469c6610162d3c9836530acf4ace9bf4c3a849c80218f1855d",
-                     "size": "104572"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/aarch64-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:3c67eb63da563c505dd046cd069aee1754ff735e9d0d7dacfd8b003a85a078ca",
+                     "size": "79842"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/arm-linux-gnueabihf.elf2uf2-0f3b795.210328.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.elf2uf2-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:dc311e18fac1e474804c044d194224267a729a16b34940c2e1ff23ab03207d98",
-                     "size": "80513"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/arm-linux-gnueabihf.elf2uf2-fc10a97.210706.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.elf2uf2-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:62457fc90b0993d720a3523537e8d55e9378769db1595709ff01357ebc13a3dd",
+                     "size": "54219"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:c39f24206e69230166fa15154b76d9553e732815cea59ee00b822b5acf2257db",
-                     "size": "110686"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:59e83f09322a2a292c20a4852512aa8c086b5b0d02842e11dfb9cb122485fb84",
+                     "size": "87881"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-w64-mingw32.elf2uf2-0f3b795.210328.zip",
-                     "archiveFileName": "i686-w64-mingw32.elf2uf2-0f3b795.210328.zip",
-                     "checksum": "SHA-256:d239f7b5d7d71e646bb7cd3c59ddef593b3e564968e262b9290353a0d8102d7d",
-                     "size": "247162"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-w64-mingw32.elf2uf2-fc10a97.210706.zip",
+                     "archiveFileName": "i686-w64-mingw32.elf2uf2-fc10a97.210706.zip",
+                     "checksum": "SHA-256:2b7c676fa0ff8a7fb6638dfe770787e6bdd9c6cd2f5a0d86f8c64c267a9bc328",
+                     "size": "70429"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-apple-darwin14.elf2uf2-0f3b795.210328.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.elf2uf2-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:3c776891300a3626ab4704808c61a15b653d58ff4f02398b492c12aed268f6aa",
-                     "size": "106610"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-apple-darwin14.elf2uf2-fc10a97.210706.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.elf2uf2-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:1154dd7bb3186bb66b8b53699d29083a688564ace502f28cf53cf9f15214d816",
+                     "size": "81919"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.elf2uf2-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:90c57b7cc68323e84e4cdc7d6da44c0aeb11a1c102c51d03fb42179d6162d3f3",
-                     "size": "101265"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.elf2uf2-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:0ed4a2a3973ee2e7a5edc4932bd2485ac0825750b72fabdb8a96e8d274dc30a4",
+                     "size": "79516"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-w64-mingw32.elf2uf2-0f3b795.210328.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.elf2uf2-0f3b795.210328.zip",
-                     "checksum": "SHA-256:a9afa2f04eb5510c8f39ea91d90b63a0dfe0b8037c6bca4d65de8905ca87175f",
-                     "size": "275914"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.elf2uf2-fc10a97.210706.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.elf2uf2-fc10a97.210706.zip",
+                     "checksum": "SHA-256:81c3c458fda68840439afc7b16133febb21e023a910924761abaee9c011a44db",
+                     "size": "78298"
                  }
               ]
            },
            {
-               "version": "1.1.0-a-81a1771",
+               "version": "1.3.1-a-7855b0c",
               "name": "pqt-pioasm",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/aarch64-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:28cd0813a46d81becb6b743ca6c7a53da0ed15f4da61ccee422f66eeb427912b",
-                     "size": "619033"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/aarch64-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:bbc6735939ffab312e700b687c29ecf7873564cec9028588c39b7be5a5b18ba3",
+                     "size": "453297"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/arm-linux-gnueabihf.pioasm-0f3b795.210328.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.pioasm-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:d1c8f3b208aa00e801dad594c9d0425c9615b1531fb3f86adb95a6188868462c",
-                     "size": "536769"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/arm-linux-gnueabihf.pioasm-fc10a97.210706.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.pioasm-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:9390b87fa87fa03d1033cf75624c0dd3d2acd7b2d794f5ab91a800ffb7546a17",
+                     "size": "360370"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:d09a70558acabf343ae04c783eac622e9bd1a6cfb74f42ebee03c0cfde5093c7",
-                     "size": "658587"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:a84e7389c5e959a409b6ce8b1150fad7641fad4ac55c129888439f33c5bfb7cc",
+                     "size": "511409"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-w64-mingw32.pioasm-0f3b795.210328.zip",
-                     "archiveFileName": "i686-w64-mingw32.pioasm-0f3b795.210328.zip",
-                     "checksum": "SHA-256:c2ab0c8f3d54886838abb0c40910113e2e1e891068b205ec23944eecd0ce8037",
-                     "size": "756780"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-w64-mingw32.pioasm-fc10a97.210706.zip",
+                     "archiveFileName": "i686-w64-mingw32.pioasm-fc10a97.210706.zip",
+                     "checksum": "SHA-256:d1f1e34bd6e4b32301f3e7b147a9eb6710c2b52f816288a11e9aeb619f242355",
+                     "size": "385662"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-apple-darwin14.pioasm-0f3b795.210328.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.pioasm-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:f48d729582eda8d95c16d2f5fd76ba452a6dd2ae3a47ea9dace01a130e4fb897",
-                     "size": "609240"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-apple-darwin14.pioasm-fc10a97.210706.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.pioasm-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:f9cb3bf99c84221b8c63d95dd22bbd1cc1ba40bd847530819392ee047962571e",
+                     "size": "480405"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.pioasm-0f3b795.210328.tar.gz",
-                     "checksum": "SHA-256:ca089e67effb47dec2a9acdf1490052d096335a8b8ffa46eaa33c205eec87b7b",
-                     "size": "605194"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.pioasm-fc10a97.210706.tar.gz",
+                     "checksum": "SHA-256:96721566a97f07cbe4af3a1d80d63336a75b129a7cb821a407260d250666a30f",
+                     "size": "458641"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-w64-mingw32.pioasm-0f3b795.210328.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.pioasm-0f3b795.210328.zip",
-                     "checksum": "SHA-256:f02509d1a75b68f14a3c3089029a0f16d185b07af598a4786b3bb6b357b88fa1",
-                     "size": "886179"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.pioasm-fc10a97.210706.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.pioasm-fc10a97.210706.zip",
+                     "checksum": "SHA-256:15fe69c11ad86ddf78c1ee26610b8b0f9d4a2323af13854e8e6b5e20d5a6fff5",
+                     "size": "408341"
                  }
               ]
            },
            {
-               "version": "1.1.0-a-81a1771",
+               "version": "1.3.1-a-7855b0c",
               "name": "pqt-mklittlefs",
               "systems": [
                  {
                     "host": "aarch64-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/aarch64-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "archiveFileName": "aarch64-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "checksum": "SHA-256:e8a77602a78ff51ed1588e0aef23c75f54dc3b8415a489ae700c90306da81701",
-                     "size": "44791"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/aarch64-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "archiveFileName": "aarch64-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "checksum": "SHA-256:3b318dbefd8ac36b3f1531d14d018d7aaad26b4f7f259a3a0c116939e74c76f6",
+                     "size": "44788"
                  },
                  {
                     "host": "arm-linux-gnueabihf",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/arm-linux-gnueabihf.mklittlefs-6b5c62d.210328.tar.gz",
-                     "archiveFileName": "arm-linux-gnueabihf.mklittlefs-6b5c62d.210328.tar.gz",
-                     "checksum": "SHA-256:6faa9ec2dfc9c6ef58df2e0fd0a990be923ce87a1f36f3e0766af2168b095d50",
-                     "size": "38250"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/arm-linux-gnueabihf.mklittlefs-6b5c62d.210706.tar.gz",
+                     "archiveFileName": "arm-linux-gnueabihf.mklittlefs-6b5c62d.210706.tar.gz",
+                     "checksum": "SHA-256:2b67c6ab2d6fd7239944963beeca0664f85fbffb7b68bcf9eaa7c64e81cad7a5",
+                     "size": "38247"
                  },
                  {
                     "host": "i686-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "archiveFileName": "i686-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "checksum": "SHA-256:6aa70b5953e76cc9561b77a8092b14a33c9850c42dd9b306a052fc2d056a89a8",
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "archiveFileName": "i686-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "checksum": "SHA-256:791f12a6969e3b78d13e4355b7977a49e5b567261499451a10ce0781a7d08d70",
                     "size": "48237"
                  },
                  {
                     "host": "i686-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/i686-w64-mingw32.mklittlefs-6b5c62d.210328.zip",
-                     "archiveFileName": "i686-w64-mingw32.mklittlefs-6b5c62d.210328.zip",
-                     "checksum": "SHA-256:34e0a84d0f562e6f9bfd91090f9064164062f7c68b4dbd65d7f154987f7940e3",
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/i686-w64-mingw32.mklittlefs-6b5c62d.210706.zip",
+                     "archiveFileName": "i686-w64-mingw32.mklittlefs-6b5c62d.210706.zip",
+                     "checksum": "SHA-256:a5bf0308b8f279f5e06c2b5f24f6843d934046ceba84fd7ed5c44ba682b770c4",
                     "size": "332804"
                  },
                  {
                     "host": "x86_64-apple-darwin",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-apple-darwin14.mklittlefs-6b5c62d.210328.tar.gz",
-                     "archiveFileName": "x86_64-apple-darwin14.mklittlefs-6b5c62d.210328.tar.gz",
-                     "checksum": "SHA-256:5289f7cde14a5b65a572ddb3b2b0e24f2ea692365787438586f60929750dc395",
-                     "size": "362804"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-apple-darwin14.mklittlefs-6b5c62d.210706.tar.gz",
+                     "archiveFileName": "x86_64-apple-darwin14.mklittlefs-6b5c62d.210706.tar.gz",
+                     "checksum": "SHA-256:e5dd89a7a4ffe494440975ec511cdf24d5978da07a9bff96429a48ad0a7054e7",
+                     "size": "362810"
                  },
                  {
                     "host": "x86_64-pc-linux-gnu",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "archiveFileName": "x86_64-linux-gnu.mklittlefs-6b5c62d.210328.tar.gz",
-                     "checksum": "SHA-256:07331f6a171010790986bbd6e98cef028dd9f95733226ebab68096e28b3ef8ef",
-                     "size": "46917"
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "archiveFileName": "x86_64-linux-gnu.mklittlefs-6b5c62d.210706.tar.gz",
+                     "checksum": "SHA-256:f1e3b374c66811bfe07997b12b6cb318c58ac84973c46e6887553aea13276884",
+                     "size": "46915"
                  },
                  {
                     "host": "x86_64-mingw32",
-                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.1.0-a/x86_64-w64-mingw32.mklittlefs-6b5c62d.210328.zip",
-                     "archiveFileName": "x86_64-w64-mingw32.mklittlefs-6b5c62d.210328.zip",
-                     "checksum": "SHA-256:17889e9ab6d199baed2c1532926c8508310524f9ba6b1db0816be5ee5d39a2f6",
+                     "url": "https://github.com/earlephilhower/pico-quick-toolchain/releases/download/1.3.1-a/x86_64-w64-mingw32.mklittlefs-6b5c62d.210706.zip",
+                     "archiveFileName": "x86_64-w64-mingw32.mklittlefs-6b5c62d.210706.zip",
+                     "checksum": "SHA-256:f5d69785c0bb5397eb49cccaa23dd131d32ab013e1124e38c15f758ded799fdb",
                     "size": "345250"
                  }
               ]
@@ -405,4 +438,4 @@
         ]
      }
   ]
-}
+}
@@ -29,29 +29,32 @@ 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 +82,8 @@ 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 +91,20 @@ 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 +112,13 @@ 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 +143,7 @@ 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 +151,10 @@ 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"
@@ -22,7 +22,6 @@ function skip_ino()
 /msc_sdfat/
 /msc_sd/
 /midi_pizza_box_dj/
-/hid_composite_joy_featherwing/
 EOL
        echo $ino | grep -q -F "$skiplist"
        echo $(( 1 - $? ))
@@ -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 - $? ))
@@ -152,7 +150,7 @@ function install_libraries()
    # install ArduinoJson library
    { test -r ArduinoJson-v6.11.0.zip || curl -sS --output ArduinoJson-v6.11.0.zip -L https://github.com/bblanchon/ArduinoJson/releases/download/v6.11.0/ArduinoJson-v6.11.0.zip; } && unzip -qo ArduinoJson-v6.11.0.zip
    { test -r Adafruit_SPIFlash-3.4.1.zip || curl -sS --output Adafruit_SPIFlash-3.4.1.zip -L https://github.com/adafruit/Adafruit_SPIFlash/archive/refs/tags/3.4.1.zip; } && unzip -qo Adafruit_SPIFlash-3.4.1.zip
-    { test -r Adafruit_Seesaw-1.4.3.zip || curl -sS --output Adafruit_Seesaw-1.4.3.zip -L https://github.com/adafruit/Adafruit_Seesaw/archive/refs/tags/1.4.3.zip; } && unzip -qo Adafruit_Seesaw-1.4.3.zip
+    { test -r Adafruit_Seesaw-1.4.4.zip || curl -sS --output Adafruit_Seesaw-1.4.4.zip -L https://github.com/adafruit/Adafruit_Seesaw/archive/refs/tags/1.4.4.zip; } && unzip -qo Adafruit_Seesaw-1.4.4.zip
    { test -r Adafruit_BusIO-1.7.3.zip || curl -sS --output Adafruit_BusIO-1.7.3.zip -L https://github.com/adafruit/Adafruit_BusIO/archive/refs/tags/1.7.3.zip; } && unzip -qo Adafruit_BusIO-1.7.3.zip
    { test -r Adafruit_CircuitPlayground-1.11.3.zip || curl -sS --output Adafruit_CircuitPlayground-1.11.3.zip -L https://github.com/adafruit/Adafruit_CircuitPlayground/archive/refs/tags/1.11.3.zip; } && unzip -qo Adafruit_CircuitPlayground-1.11.3.zip
    { test -r Adafruit_NeoPixel-1.8.1.zip || curl -sS --output Adafruit_NeoPixel-1.8.1.zip -L https://github.com/adafruit/Adafruit_NeoPixel/archive/refs/tags/1.8.1.zip; } && unzip -qo Adafruit_NeoPixel-1.8.1.zip
@@ -13,9 +13,11 @@ pico_sdk_init()

 add_library(pico STATIC)

+# Use a longer XOSC startup time, to accommodate Adafruit and other boards that may need it.
 target_compile_definitions(pico PUBLIC
 	PICO_PRINTF_ALWAYS_INCLUDED=1
 	PICO_FLASH_SIZE_BYTES=16777216
+	PICO_XOSC_STARTUP_DELAY_MULTIPLIER=64
 )

 target_compile_options(pico PUBLIC
@@ -25,7 +27,7 @@ target_compile_options(pico PUBLIC

 include_directories(BEFORE ${PICO_SDK_PATH}/../tools/libpico)

-target_link_libraries(pico 
+target_link_libraries(pico
 	boot_stage2
 	hardware_adc
 	hardware_base
@@ -33,6 +35,7 @@ target_link_libraries(pico
 	hardware_clocks
 	hardware_divider
 	hardware_dma
+	hardware_exception
 	hardware_flash
 	hardware_gpio
 	hardware_i2c
@@ -50,6 +53,7 @@ target_link_libraries(pico
 	hardware_vreg
 	hardware_watchdog
 	hardware_xosc
+	cmsis
 	pico_bit_ops
 	pico_bootrom
 	pico_bootsel_via_double_reset
@@ -67,18 +71,13 @@ target_link_libraries(pico
 	pico_standard_link
 	pico_stdlib
 	pico_unique_id
+	pico_util
 	tinyusb
-        tinyusb_device_unmarked
+	tinyusb_device_unmarked
 	pico_audio
 	pico_audio_i2s
 )

-add_custom_command(TARGET pico PRE_BUILD
-	COMMAND arm-none-eabi-gcc -g -c ../../../assembly/crt0.S -I "${PICO_SDK_PATH}/src/rp2040/hardware_regs/include" -I "${PICO_SDK_PATH}/src/common/pico_binary_info/include/"
-)
-
 add_custom_command(TARGET pico POST_BUILD
-	COMMAND ar d libpico.a crt0.S.obj
-	COMMAND ar r libpico.a crt0.o
 	COMMAND ar d libpico.a stdio.c.obj stdio_usb.c.obj stdio_usb_descriptors.c.obj
 )
@@ -23,6 +23,7 @@ for type in boot2_generic_03h boot2_is25lp080 boot2_w25q080 boot2_w25x10cl; do
        arm-none-eabi-gcc -march=armv6-m -mcpu=cortex-m0plus -mthumb -O3 \
                         -DNDEBUG -DPICO_FLASH_SPI_CLKDIV=$div \
                         -c "$PICO_SDK_PATH/src/rp2_common/boot_stage2/$type.S" \
+                         -I "$PICO_SDK_PATH/src/boards/include/boards/" \
                         -I "$PICO_SDK_PATH/src/rp2040/hardware_regs/include/" \
                         -I "$PICO_SDK_PATH/src/rp2_common/pico_platform/include/" \
                         -I "$PICO_SDK_PATH/src/rp2_common/boot_stage2/asminclude/" \
@@ -42,4 +43,4 @@ for type in boot2_generic_03h boot2_is25lp080 boot2_w25q080 boot2_w25x10cl; do
                   -s 0xffffffff $type.$div.bin ${type}_${div}_padded_checksum.S
    done
 done
-mv *.S ../../../../assembly/.
+mv *.S ../../../../boot2/.
@@ -26,14 +26,14 @@ if (NOT PICO_EXTRAS_PATH)
            get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_EXTRAS_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
        endif ()
        FetchContent_Declare(
-                PICO_EXTRAS
+                pico_extras
                GIT_REPOSITORY https://github.com/raspberrypi/pico-extras
                GIT_TAG master
        )
-        if (NOT PICO_EXTRAS)
-            message("Downloading PICO EXTRAS")
-            FetchContent_Populate(PICO_EXTRAS)
-            set(PICO_EXTRAS_PATH ${PICO_EXTRAS_SOURCE_DIR})
+        if (NOT pico_extras)
+            message("Downloading Raspberry Pi Pico Extras")
+            FetchContent_Populate(pico_extras)
+            set(PICO_EXTRAS_PATH ${pico_extras_SOURCE_DIR})
        endif ()
        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
    else ()
@@ -59,4 +59,4 @@ endif ()

 set(PICO_EXTRAS_PATH ${PICO_EXTRAS_PATH} CACHE PATH "Path to the PICO EXTRAS" FORCE)

-add_subdirectory(${PICO_EXTRAS_PATH} pico_extras)
+add_subdirectory(${PICO_EXTRAS_PATH} pico_extras)
@@ -3,8 +3,6 @@
 # This can be dropped into an external project to help locate this SDK
 # It should be include()ed prior to project()

-# todo document
-
 if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
    set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
    message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
@@ -20,8 +18,8 @@ if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_P
    message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
 endif ()

-set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the PICO SDK")
-set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of PICO SDK from git if not otherwise locatable")
+set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
+set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
 set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")

 if (NOT PICO_SDK_PATH)
@@ -37,14 +35,14 @@ if (NOT PICO_SDK_PATH)
                GIT_TAG master
        )
        if (NOT pico_sdk)
-            message("Downloading PICO SDK")
+            message("Downloading Raspberry Pi Pico SDK")
            FetchContent_Populate(pico_sdk)
            set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
        endif ()
        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
    else ()
        message(FATAL_ERROR
-                "PICO SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
+                "SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
                )
    endif ()
 endif ()
@@ -56,9 +54,9 @@ endif ()

 set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
 if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
-    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the PICO SDK")
+    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
 endif ()

-set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the PICO SDK" FORCE)
+set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)

 include(${PICO_SDK_INIT_CMAKE_FILE})
@@ -34,41 +34,17 @@
 // COMMON CONFIGURATION
 //--------------------------------------------------------------------

-// defined by board.mk
 #ifndef CFG_TUSB_MCU
-  #error CFG_TUSB_MCU must be defined
+ #define CFG_TUSB_MCU             OPT_MCU_RP2040
 #endif

-// RHPort number used for device can be defined by board.mk, default to port 0
-#ifndef BOARD_DEVICE_RHPORT_NUM
-  #define BOARD_DEVICE_RHPORT_NUM     0
-#endif
-
-// RHPort max operational speed can defined by board.mk
-// Default to Highspeed for MCU with internal HighSpeed PHY (can be port specific), otherwise FullSpeed
-#ifndef BOARD_DEVICE_RHPORT_SPEED
-  #if (CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || \
-       CFG_TUSB_MCU == OPT_MCU_NUC505  || CFG_TUSB_MCU == OPT_MCU_CXD56)
-    #define BOARD_DEVICE_RHPORT_SPEED   OPT_MODE_HIGH_SPEED
-  #else
-    #define BOARD_DEVICE_RHPORT_SPEED   OPT_MODE_FULL_SPEED
-  #endif
-#endif
-
-// Device mode with rhport and speed defined by board.mk
-#if   BOARD_DEVICE_RHPORT_NUM == 0
-  #define CFG_TUSB_RHPORT0_MODE     (OPT_MODE_DEVICE | BOARD_DEVICE_RHPORT_SPEED)
-#elif BOARD_DEVICE_RHPORT_NUM == 1
-  #define CFG_TUSB_RHPORT1_MODE     (OPT_MODE_DEVICE | BOARD_DEVICE_RHPORT_SPEED)
-#else
-  #error "Incorrect RHPort configuration"
-#endif
-
-// This example doesn't use an RTOS
-//#define CFG_TUSB_OS               OPT_OS_NONE
+#define CFG_TUSB_RHPORT0_MODE     OPT_MODE_DEVICE
+#define CFG_TUSB_OS               OPT_OS_PICO

 // CFG_TUSB_DEBUG is defined by compiler in DEBUG build
-// #define CFG_TUSB_DEBUG           0
+#ifndef CFG_TUSB_DEBUG
+#define CFG_TUSB_DEBUG           0
+#endif

 /* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
 * Tinyusb use follows macros to declare transferring memory so that they can be put
@@ -36,6 +36,18 @@ def BuildFreq(name):
        print("%s.menu.freq.%s=%s MHz%s" % (name, f, f, warn))
        print("%s.menu.freq.%s.build.f_cpu=%dL" % (name, f, f * 1000000))

+def BuildOptimize(name):
+    for l in [ ("Small", "Small", "-Os", " (standard)"), ("Optimize", "Optimize", "-O", ""), ("Optimize2", "Optimize More", "-O2", ""),
+               ("Optimize3", "Optimize Even More", "-O3", ""), ("Fast", "Fast", "-Ofast", " (maybe slower)"), ("Debug", "Debug", "-Og", "") ]:
+        print("%s.menu.opt.%s=%s (%s)%s" % (name, l[0], l[1], l[2], l[3]))
+        print("%s.menu.opt.%s.build.flags.optimize=%s" % (name, l[0], l[2]))
+
+def BuildRTTI(name):
+    print("%s.menu.rtti.Disabled=Disabled" % (name))
+    print("%s.menu.rtti.Disabled.build.flags.rtti=-fno-rtti" % (name))
+    print("%s.menu.rtti.Enabled=Enabled" % (name))
+    print("%s.menu.rtti.Enabled.build.flags.rtti=" % (name))
+
 def BuildBoot(name):
    for l in [ ("Generic SPI /2", "boot2_generic_03h_2_padded_checksum"),  ("Generic SPI /4", "boot2_generic_03h_4_padded_checksum"),
            ("IS25LP080 QSPI /2", "boot2_is25lp080_2_padded_checksum"), ("IS25LP080 QSPI /4", "boot2_is25lp080_4_padded_checksum"),
@@ -46,26 +58,31 @@ def BuildBoot(name):

 def BuildUSBStack(name):
    print("%s.menu.usbstack.picosdk=Pico SDK" % (name))
-    print("%s.menu.usbstack.picosdk.build.usbstack_flags=" % (name))
+    print('%s.menu.usbstack.picosdk.build.usbstack_flags="-I{runtime.platform.path}/tools/libpico"' % (name))
    print("%s.menu.usbstack.tinyusb=Adafruit TinyUSB" % (name))
-    print('%s.menu.usbstack.tinyusb.build.usbstack_flags=-DUSE_TINYUSB "-I{build.core.path}/TinyUSB" "-I{runtime.platform.path}/libraries/Adafruit_TinyUSB_Arduino/src/arduino"' % (name))
+    print('%s.menu.usbstack.tinyusb.build.usbstack_flags=-DUSE_TINYUSB "-I{runtime.platform.path}/libraries/Adafruit_TinyUSB_Arduino/src/arduino"' % (name))

-def BuildHeader(name, vendor_name, product_name, pidtouse, vid, pid, boarddefine, variant, uploadtool, flashsize, boot2):
+def BuildWithoutUSBStack(name):
+    print("%s.menu.usbstack.nousb=No USB" % (name))
+    print('%s.menu.usbstack.nousb.build.usbstack_flags="-DNO_USB -DDISABLE_USB_SERIAL -I{runtime.platform.path}/tools/libpico"' % (name))
+
+def BuildHeader(name, vendor_name, product_name, vidtouse, pidtouse, vid, pid, pwr, boarddefine, variant, uploadtool, flashsize, ramsize, boot2):
    prettyname = vendor_name + " " + product_name
    print()
    print("# -----------------------------------")
    print("# %s" % (prettyname))
    print("# -----------------------------------")
    print("%s.name=%s" % (name, prettyname))
-    print("%s.vid.0=%s" % (name, vid))
+    print("%s.vid.0=%s" % (name, vidtouse))
    print("%s.pid.0=%s" % (name, pidtouse))
    print("%s.build.usbpid=-DSERIALUSB_PID=%s" % (name, pid))
+    print("%s.build.usbpwr=-DUSBD_MAX_POWER_MA=%s" % (name, pwr))
    print("%s.build.board=%s" % (name, boarddefine))
    print("%s.build.mcu=cortex-m0plus" % (name))
    print("%s.build.variant=%s" % (name, variant))
    print("%s.upload.tool=%s" % (name, uploadtool))
    print("%s.upload.maximum_size=%d" % (name, flashsize))
-    print("%s.upload.maximum_data_size=262144" % (name))
+    print("%s.upload.maximum_data_size=%d" % (name, ramsize))
    print("%s.upload.wait_for_upload_port=true" % (name))
    print("%s.upload.erase_cmd=" % (name))
    print("%s.serial.disableDTR=false" % (name))
@@ -73,36 +90,50 @@ def BuildHeader(name, vendor_name, product_name, pidtouse, vid, pid, boarddefine
    print("%s.build.f_cpu=125000000" % (name))
    print("%s.build.led=" % (name))
    print("%s.build.core=rp2040" % (name))
-    print("%s.build.mcu=rp2040" % (name))
    print("%s.build.ldscript=memmap_default.ld" % (name))
+    print("%s.build.ram_length=%dk" % (name, ramsize / 1024))
    print("%s.build.boot2=%s" % (name, boot2))
    print("%s.build.vid=%s" % (name, vid))
    print("%s.build.pid=%s" % (name, pid))
    print('%s.build.usb_manufacturer="%s"' % (name, vendor_name))
    print('%s.build.usb_product="%s"' % (name, product_name))

+def WriteWarning():
+    print("# WARNING - DO NOT EDIT THIS FILE, IT IS MACHINE GENERATED")
+    print("#           To change something here, edit tools/makeboards.py and")
+    print("#           run 'python3 makeboards.py > ../boards.txt' to regenerate")
+    print()
+
 def BuildGlobalMenuList():
    print("menu.BoardModel=Model")
    print("menu.flash=Flash Size")
    print("menu.freq=CPU Speed")
+    print("menu.opt=Optimize")
+    print("menu.rtti=RTTI")
    print("menu.dbgport=Debug Port")
    print("menu.dbglvl=Debug Level")
    print("menu.boot2=Boot Stage 2")
    print("menu.usbstack=USB Stack")


-def MakeBoard(name, vendor_name, product_name, vid, pid, boarddefine, flashsizemb, boot2):
-    for a, b, c in [ ["", "", "uf2conv"], ["picoprobe", " (Picoprobe)", "picoprobe"]]:
+def MakeBoard(name, vendor_name, product_name, vid, pid, pwr, boarddefine, flashsizemb, boot2):
+    for a, b, c in [ ["", "", "uf2conv"], ["picoprobe", " (Picoprobe)", "picoprobe"], ["picodebug", " (pico-debug)", "picodebug"]]:
        n = name + a
        p = product_name + b
        fssizelist = [ 0, 64 * 1024, 128 * 1024, 256 * 1024, 512 * 1024 ]
        for i in range(1, flashsizemb):
            fssizelist.append(i * 1024 * 1024)
+        vidtouse = vid;
+        ramsizekb = 256;
        if a == "picoprobe":
            pidtouse = '0x0004'
+        elif a == "picodebug":
+            vidtouse = '0x1209'
+            pidtouse = '0x2488'
+            ramsizekb = 240;
        else:
            pidtouse = pid
-        BuildHeader(n, vendor_name, p, pidtouse, vid, pid, boarddefine, name, c, flashsizemb * 1024 * 1024, boot2)
+        BuildHeader(n, vendor_name, p, vidtouse, pidtouse, vid, pid, pwr, boarddefine, name, c, flashsizemb * 1024 * 1024, ramsizekb * 1024, boot2)
        if name == "generic":
            BuildFlashMenu(n, 2*1024*1024, [0, 1*1024*1024])
            BuildFlashMenu(n, 4*1024*1024, [0, 2*1024*1024])
@@ -111,19 +142,35 @@ def MakeBoard(name, vendor_name, product_name, vid, pid, boarddefine, flashsizem
        else:
            BuildFlashMenu(n, flashsizemb * 1024 * 1024, fssizelist)
        BuildFreq(n)
+        BuildOptimize(n)
+        BuildRTTI(n)
        BuildDebugPort(n)
        BuildDebugLevel(n)
-        BuildUSBStack(n)
+        if a == "picodebug":
+            BuildWithoutUSBStack(n)
+        else:
+            BuildUSBStack(n)
        if name == "generic":
            BuildBoot(n)

-
+WriteWarning()
 BuildGlobalMenuList()
-MakeBoard("rpipico", "Raspberry Pi", "Pico", "0x2e8a", "0x000a", "RASPBERRY_PI_PICO", 2, "boot2_w25q080_2_padded_checksum")
-MakeBoard("adafruit_feather", "Adafruit", "Feather RP2040", "0x239a", "0x80f1", "ADAFRUIT_FEATHER_RP2040", 8, "boot2_w25x10cl_4_padded_checksum")
-MakeBoard("adafruit_itsybitsy", "Adafruit", "ItsyBitsy RP2040", "0x239a", "0x80fd", "ADAFRUIT_ITSYBITSY_RP2040", 8, "boot2_w25q080_2_padded_checksum")
-MakeBoard("adafruit_qtpy", "Adafruit", "QT Py RP2040", "0x239a", "0x80f7", "ADAFRUIT_QTPY_RP2040", 8, "boot2_generic_03h_4_padded_checksum")
-MakeBoard("adafruit_stemmafriend", "Adafruit", "STEMMA Friend RP2040", "0x239a", "0x80e3", "ADAFRUIT_STEMMAFRIEND_RP2040", 8, "boot2_w25q080_2_padded_checksum")
-MakeBoard("adafruit_trinkeyrp2040qt", "Adafruit", "Trinkey RP2040 QT", "0x239a", "0x8109", "ADAFRUIT_TRINKEYQT_RP2040", 8, "boot2_w25q080_2_padded_checksum")
-MakeBoard("generic", "Generic", "RP2040", "0x2e8a", "0xf00a", "GENERIC_RP2040", 16, "boot2_generic_03h_4_padded_checksum")
-
+MakeBoard("rpipico", "Raspberry Pi", "Pico", "0x2e8a", "0x000a", 250, "RASPBERRY_PI_PICO", 2, "boot2_w25q080_2_padded_checksum")
+MakeBoard("adafruit_feather", "Adafruit", "Feather RP2040", "0x239a", "0x80f1", 250, "ADAFRUIT_FEATHER_RP2040", 8, "boot2_w25x10cl_4_padded_checksum")
+MakeBoard("adafruit_itsybitsy", "Adafruit", "ItsyBitsy RP2040", "0x239a", "0x80fd", 250, "ADAFRUIT_ITSYBITSY_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("adafruit_qtpy", "Adafruit", "QT Py RP2040", "0x239a", "0x80f7", 250, "ADAFRUIT_QTPY_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("adafruit_stemmafriend", "Adafruit", "STEMMA Friend RP2040", "0x239a", "0x80e3", 250, "ADAFRUIT_STEMMAFRIEND_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("adafruit_trinkeyrp2040qt", "Adafruit", "Trinkey RP2040 QT", "0x239a", "0x8109", 250, "ADAFRUIT_TRINKEYQT_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("adafruit_macropad2040", "Adafruit", "MacroPad RP2040", "0x239a", "0x8107", 250, "ADAFRUIT_MACROPAD_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("arduino_nano_connect", "Arduino", "Nano RP2040 Connect", "0x2341", "0x0058", 250, "ARDUINO_NANO_RP2040_CONNECT", 16, "boot2_w25q080_2_padded_checksum")
+MakeBoard("cytron_maker_nano_rp2040", "Cytron", "Maker Nano RP2040", "0x2e8a", "0x100f", 250, "CYTRON_MAKER_NANO_RP2040", 2, "boot2_w25q080_2_padded_checksum")
+MakeBoard("cytron_maker_pi_rp2040", "Cytron", "Maker Pi RP2040", "0x2e8a", "0x1000", 250, "CYTRON_MAKER_PI_RP2040", 2, "boot2_w25q080_2_padded_checksum")
+MakeBoard("sparkfun_promicrorp2040", "SparkFun", "ProMicro RP2040", "0x1b4f", "0x0026", 250, "SPARKFUN_PROMICRO_RP2040", 16, "boot2_generic_03h_4_padded_checksum")
+MakeBoard("generic", "Generic", "RP2040", "0x2e8a", "0xf00a", 250, "GENERIC_RP2040", 16, "boot2_generic_03h_4_padded_checksum")
+MakeBoard("challenger_2040_wifi", "iLabs", "Challenger 2040 WiFi", "0x2e8a", "0x1006", 250, "CHALLENGER_2040_WIFI_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("challenger_2040_lte", "iLabs", "Challenger 2040 LTE", "0x2e8a", "0x100b", 500, "CHALLENGER_2040_LTE_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("challenger_nb_2040_wifi", "iLabs", "Challenger NB 2040 WiFi", "0x2e8a", "0x100b", 500, "CHALLENGER_NB_2040_WIFI_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("ilabs_rpico32", "iLabs", "RPICO32", "0x2e8a", "0x1010", 250, "ILABS_2040_RPICO32_RP2040", 8, "boot2_w25q080_2_padded_checksum")
+MakeBoard("melopero_shake_rp2040", "Melopero", "Shake RP2040", "0x2e8a", "0x1005", 250, "MELOPERO_SHAKE_RP2040", 16, "boot2_w25q080_2_padded_checksum")
+MakeBoard("upesy_rp2040_devkit", "uPesy", "RP2040 DevKit", "0x2e8a", "0x1007", 250, "UPESY_RP2040_DEVKIT", 2, "boot2_w25q080_2_padded_checksum")
+MakeBoard("wiznet_5100s_evb_pico", "WIZnet", "W5100S-EVB-Pico", "0x2e8a", "0x1008", 250, "WIZNET_5100S_EVB_PICO", 2, "boot2_w25q080_2_padded_checksum")
@@ -0,0 +1,228 @@
+# Copyright 2021-present Maximilian Gerhardt <maximilian.gerhardt@rub.de>
+#
+# 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.
+
+import os, re, sys
+from SCons.Script import DefaultEnvironment, Builder, AlwaysBuild
+
+env = DefaultEnvironment()
+platform = env.PioPlatform()
+board = env.BoardConfig()
+upload_protocol = env.subst("$UPLOAD_PROTOCOL") or "picotool"
+ram_size = board.get("upload.maximum_ram_size")
+
+FRAMEWORK_DIR = platform.get_package_dir("framework-arduinopico")
+assert os.path.isdir(FRAMEWORK_DIR)
+
+# update progsize expression to also check for bootloader.
+env.Replace(
+    SIZEPROGREGEXP=r"^(?:\.boot2|\.text|\.data|\.rodata|\.text.align|\.ARM.exidx)\s+(\d+).*"
+)
+
+env.Append(
+    ASFLAGS=env.get("CCFLAGS", [])[:],
+
+    CCFLAGS=[
+        "-Werror=return-type",
+        "-march=armv6-m",
+        "-mcpu=cortex-m0plus",
+        "-mthumb",
+        "-ffunction-sections",
+        "-fdata-sections",
+        "-iprefix" + os.path.join(FRAMEWORK_DIR),
+        "@%s" % os.path.join(FRAMEWORK_DIR, "lib", "platform_inc.txt")
+    ],
+
+    CFLAGS=[
+        "-std=gnu17"
+    ],
+
+    CXXFLAGS=[
+        "-std=gnu++17",
+        "-fno-exceptions",
+        "-fno-rtti",
+    ],
+
+    CPPDEFINES=[
+        ("ARDUINO", 10810),
+        "ARDUINO_ARCH_RP2040",
+        ("F_CPU", "$BOARD_F_CPU"),
+        ("BOARD_NAME", '\\"%s\\"' % env.subst("$BOARD")),
+    ],
+
+    CPPPATH=[
+        os.path.join(FRAMEWORK_DIR, "cores", "rp2040"),
+        os.path.join(FRAMEWORK_DIR, "cores", "rp2040", "api", "deprecated"),
+        os.path.join(FRAMEWORK_DIR, "cores", "rp2040",
+                     "api", "deprecated-avr-comp")
+    ],
+
+    LINKFLAGS=[
+        "-march=armv6-m",
+        "-mcpu=cortex-m0plus",
+        "-mthumb",
+        "@%s" % os.path.join(FRAMEWORK_DIR, "lib", "platform_wrap.txt"),
+        "-u_printf_float",
+        "-u_scanf_float",
+        # no cross-reference table, heavily spams the output
+        # "-Wl,--cref",
+        "-Wl,--check-sections",
+        "-Wl,--gc-sections",
+        "-Wl,--unresolved-symbols=report-all",
+        "-Wl,--warn-common"
+    ],
+
+    LIBSOURCE_DIRS=[os.path.join(FRAMEWORK_DIR, "libraries")],
+
+    LIBPATH=[
+        os.path.join(FRAMEWORK_DIR, "lib")
+    ],
+
+    # link lib/libpico.a
+    LIBS=["pico", "m", "c", "stdc++", "c"]
+)
+
+
+def configure_usb_flags(cpp_defines):
+    global ram_size
+    if "USE_TINYUSB" in cpp_defines:
+        env.Append(CPPPATH=[os.path.join(
+            FRAMEWORK_DIR, "libraries", "Adafruit_TinyUSB_Arduino", "src", "arduino")])
+    elif "PIO_FRAMEWORK_ARDUINO_NO_USB" in cpp_defines:
+        env.Append(
+            CPPPATH=[os.path.join(FRAMEWORK_DIR, "tools", "libpico")],
+            CPPDEFINES=[
+                "NO_USB",
+                "DISABLE_USB_SERIAL" 
+            ]
+        )
+        # do not further add more USB flags or update sizes. no USB used.
+        return
+    else:
+        # standard Pico SDK USB stack used.
+        env.Append(CPPPATH=[os.path.join(FRAMEWORK_DIR, "tools", "libpico")])
+    # in any case, add standard flags
+    # preferably use USB information from arduino.earlephilhower section,
+    # but fallback to sensible values derived from other parts otherwise.
+    usb_pid = board.get("build.arduino.earlephilhower.usb_pid",
+                        board.get("build.hwids", [[0, 0]])[0][1])
+    usb_vid = board.get("build.arduino.earlephilhower.usb_vid",
+                        board.get("build.hwids", [[0, 0]])[0][0])
+    usb_manufacturer = board.get(
+        "build.arduino.earlephilhower.usb_manufacturer", board.get("vendor", "Raspberry Pi"))
+    usb_product = board.get(
+        "build.arduino.earlephilhower.usb_product", board.get("name", "Pico"))
+
+    # Copy logic from makeboards.py. 
+    # Depending on whether a certain upload / debug method is used, change
+    # the PID/VID.
+    # https://github.com/earlephilhower/arduino-pico/blob/master/tools/makeboards.py
+    vidtouse = usb_vid
+    pidtouse = usb_pid
+    if upload_protocol == "picoprobe": 
+        pidtouse = '0x0004'
+    elif upload_protocol == "picodebug":
+        vidtouse = '0x1209'
+        pidtouse = '0x2488'
+        ram_size = 240 * 1024
+
+    env.Append(CPPDEFINES=[
+        ("CFG_TUSB_MCU", "OPT_MCU_RP2040"),
+        ("USB_VID", usb_vid),
+        ("USB_PID", usb_pid),
+        ("USB_MANUFACTURER", '\\"%s\\"' % usb_manufacturer),
+        ("USB_PRODUCT", '\\"%s\\"' % usb_product),
+        ("SERIALUSB_PID", usb_pid)
+    ])
+
+    # use vidtouse and pidtouse 
+    # for USB PID/VID autodetection
+    hw_ids = board.get("build.hwids", [["0x2E8A", "0x00C0"]])
+    hw_ids[0][0] = vidtouse
+    hw_ids[0][1] = pidtouse
+    board.update("build.hwids", hw_ids)
+    board.update("upload.maximum_ram_size", ram_size)
+
+#
+# Process configuration flags
+#
+cpp_defines = env.Flatten(env.get("CPPDEFINES", []))
+
+configure_usb_flags(cpp_defines)
+
+# info about the filesystem is already parsed by the platform's main.py 
+# script. We can just use the info here
+ 
+linkerscript_cmd = env.Command(
+    os.path.join("$BUILD_DIR", "memmap_default.ld"),  # $TARGET
+    os.path.join(FRAMEWORK_DIR, "lib", "memmap_default.ld"),  # $SOURCE
+    env.VerboseAction(" ".join([
+        '"$PYTHONEXE" "%s"' % os.path.join(
+            FRAMEWORK_DIR, "tools", "simplesub.py"),
+        "--input", "$SOURCE",
+        "--out", "$TARGET",
+        "--sub", "__FLASH_LENGTH__", "$PICO_FLASH_LENGTH",
+        "--sub", "__EEPROM_START__", "$PICO_EEPROM_START",
+        "--sub", "__FS_START__", "$FS_START",
+        "--sub", "__FS_END__", "$FS_END",
+        "--sub", "__RAM_LENGTH__", "%dk" % (ram_size // 1024),
+    ]), "Generating linkerscript $BUILD_DIR/memmap_default.ld")
+)
+
+# if no custom linker script is provided, we use the command that we prepared to generate one.
+if not board.get("build.ldscript", ""):
+    # execute fetch filesystem info stored in env to alawys have that info ready
+    env["fetch_fs_size"](env)
+    env.Depends("$BUILD_DIR/${PROGNAME}.elf", linkerscript_cmd)
+    env.Replace(LDSCRIPT_PATH=os.path.join("$BUILD_DIR", "memmap_default.ld"))
+
+libs = []
+
+variant = board.get("build.arduino.earlephilhower.variant", board.get("build.variant", None))
+
+if variant is not None:
+    env.Append(CPPPATH=[
+        os.path.join(FRAMEWORK_DIR, "variants", variant)
+    ])
+
+    libs.append(
+        env.BuildLibrary(
+            os.path.join("$BUILD_DIR", "FrameworkArduinoVariant"),
+            os.path.join(FRAMEWORK_DIR, "variants", variant)))
+
+libs.append(
+    env.BuildLibrary(
+        os.path.join("$BUILD_DIR", "FrameworkArduino"),
+        os.path.join(FRAMEWORK_DIR, "cores", "rp2040")))
+
+bootloader_src_file = board.get(
+    "build.arduino.earlephilhower.boot2_source", "boot2_generic_03h_2_padded_checksum.S")
+
+# Add bootloader file (boot2.o)
+# Only build the needed .S file, exclude all others via src_filter.
+env.BuildSources(
+    os.path.join("$BUILD_DIR", "FrameworkArduinoBootloader"),
+    os.path.join(FRAMEWORK_DIR, "boot2"),
+    "-<*> +<%s>" % bootloader_src_file,
+)
+# Add include flags for all .S assembly file builds
+env.Append(
+    ASFLAGS=[
+        "-I", os.path.join(FRAMEWORK_DIR, "pico-sdk", "src",
+                           "rp2040", "hardware_regs", "include"),
+        "-I", os.path.join(FRAMEWORK_DIR, "pico-sdk", "src",
+                           "common", "pico_binary_info", "include")
+    ]
+)
+
+env.Prepend(LIBS=libs)
@@ -27,12 +27,10 @@
 #define PIN_SPI1_SS    (31u)

 // Wire
-#define PIN_WIRE0_SDA  (2u)
-#define PIN_WIRE0_SCL  (3u)
-
-// Not pinned out
-#define PIN_WIRE1_SDA  (31u)
-#define PIN_WIRE1_SCL  (31u)
+#define PIN_WIRE0_SDA  (24u)
+#define PIN_WIRE0_SCL  (25u)
+#define PIN_WIRE1_SDA  (2u)
+#define PIN_WIRE1_SCL  (3u)

 #define SERIAL_HOWMANY (2u)
 #define SPI_HOWMANY    (1u)
@@ -27,15 +27,13 @@
 #define PIN_SPI1_SS    (31u)

 // Wire
-#define PIN_WIRE0_SDA  (2u)
-#define PIN_WIRE0_SCL  (3u)
-
-// Not pinned out
-#define PIN_WIRE1_SDA  (31u)
-#define PIN_WIRE1_SCL  (31u)
+#define PIN_WIRE0_SDA  (24u)
+#define PIN_WIRE0_SCL  (25u)
+#define PIN_WIRE1_SDA  (2u)
+#define PIN_WIRE1_SCL  (3u)

 #define SERIAL_HOWMANY (2u)
 #define SPI_HOWMANY    (1u)
-#define WIRE_HOWMANY   (1u)
+#define WIRE_HOWMANY   (2u)

 #include "../generic/common.h"
@@ -0,0 +1,52 @@
+#pragma once
+
+
+// LEDs
+#define PIN_LED        (13u)
+
+// Extra hardware!
+#define PIN_SWITCH            0
+#define PIN_SPEAKER_ENABLE   14
+#define PIN_SPEAKER          16
+#define PIN_ROTB             17
+#define PIN_ROTA             18
+#define OLED_CS              22
+#define OLED_RST             23
+#define OLED_DC              24
+
+#define PIN_NEOPIXEL         19
+#define NUM_NEOPIXEL         12
+
+// Not pinned out
+#define PIN_SERIAL1_TX (31u)
+#define PIN_SERIAL1_RX (31u)
+
+// Not pinned out
+#define PIN_SERIAL2_TX (31u)
+#define PIN_SERIAL2_RX (31u)
+
+// SPI
+#define PIN_SPI1_MISO  (28u)
+#define PIN_SPI1_MOSI  (27u)
+#define PIN_SPI1_SCK   (26u)
+#define PIN_SPI1_SS    (31u) // not pinned out
+
+// Not pinned out
+#define PIN_SPI0_MISO  (31u)
+#define PIN_SPI0_MOSI  (31u)
+#define PIN_SPI0_SCK   (31u)
+#define PIN_SPI0_SS    (31u)
+
+// Wire
+#define PIN_WIRE0_SDA  (20u)
+#define PIN_WIRE0_SCL  (21u)
+
+// Not pinned out
+#define PIN_WIRE1_SDA  (31u)
+#define PIN_WIRE1_SCL  (31u)
+
+#define SERIAL_HOWMANY (1u)
+#define SPI_HOWMANY    (1u)
+#define WIRE_HOWMANY   (1u)
+
+#include "../generic/common.h"
@@ -0,0 +1,53 @@
+/* Taken from https://github.com/arduino/ArduinoCore-mbed/tree/master/variants/NANO_RP2040_CONNECT */
+
+AnalogPinDescription g_AAnalogPinDescription[] = {
+  { p26,        NULL },    // A0
+  { p27,        NULL },    // A1
+  { p28,        NULL },    // A2
+  { p29,        NULL },    // A3
+};
+
+PinDescription g_APinDescription[] = {
+  // D0 - D7
+  { p1,         NULL, NULL, NULL },    // D0
+  { p0,         NULL, NULL, NULL },    // D1
+  { p25,        NULL, NULL, NULL },    // D2
+  { p15,        NULL, NULL, NULL },    // D3
+  { p16,        NULL, NULL, NULL },    // D4
+  { p17,        NULL, NULL, NULL },    // D5
+  { p18,        NULL, NULL, NULL },    // D6
+  { p19,        NULL, NULL, NULL },    // D7
+
+  // D8 - D13
+  { p20,        NULL, NULL, NULL },    // D8
+  { p21,        NULL, NULL, NULL },    // D9
+  { p5,         NULL, NULL, NULL },    // D10
+  { p7,         NULL, NULL, NULL },    // D11 / SPITX
+  { p4,         NULL, NULL, NULL },    // D12 / SPIRX
+  { p6,         NULL, NULL, NULL },    // D13 / SPICLK / LEDB 
+
+  // Analog as digital
+  // A4 to A7 are controlled by Nina module and exposed via different APIs
+  { p26,        NULL, NULL, NULL },    // A0 -> D14
+  { p27,        NULL, NULL, NULL },    // A1 -> D15
+  { p28,        NULL, NULL, NULL },    // A2 -> D16
+  { p29,        NULL, NULL, NULL },    // A3 -> D17
+
+  // I2C
+  { p12,        NULL, NULL, NULL },    // A4 / SDA  -> D18
+  { p13,        NULL, NULL, NULL },    // A5 / SCL  -> D19
+
+  // Internal pins - D20 - D23
+  { p2,         NULL, NULL, NULL },    // GPIO0
+  { p24,        NULL, NULL, NULL },    // IMU IRQ
+  { p22,        NULL, NULL, NULL },    // PDM DATA IN
+  { p23,        NULL, NULL, NULL },    // PDM CLOCK
+
+  // Internal pins Nina - D24 - D29
+  { p3,         NULL, NULL, NULL },    // RESET_NINA
+  { p8,         NULL, NULL, NULL },    // SPI1_CIPO / UART1_TX
+  { p9,         NULL, NULL, NULL },    // SPI1_CS / UART1_RX
+  { p10,        NULL, NULL, NULL },    // SPI1_ACK / UART1_CTS
+  { p11,        NULL, NULL, NULL },    // SPI1_COPI / UART1_RTS
+  { p14,        NULL, NULL, NULL },    // SPI1_SCK
+};
@@ -0,0 +1,48 @@
+/* Taken from https://github.com/arduino/ArduinoCore-mbed/tree/master/variants/NANO_RP2040_CONNECT */
+
+#ifndef _NINA_PINS_
+#define _NINA_PINS_
+
+/******************************************************************************
+ * INCLUDE
+ ******************************************************************************/
+
+#include "Arduino.h"
+//#include "WiFiNINA.h"
+/******************************************************************************
+ * PREPROCESSOR-MAGIC
+ ******************************************************************************/
+
+#if __has_include("WiFiNINA.h")
+#  define NINA_ATTRIBUTE
+#else
+#  define NINA_ATTRIBUTE __attribute__ ((error("Please include WiFiNINA.h to use this pin")))
+#endif
+
+/******************************************************************************
+ * TYPEDEF
+ ******************************************************************************/
+
+enum NinaPin {
+  LEDR = 27,
+  LEDG = 25,
+  LEDB = 26//,
+  //A4   = 34,
+  //A5   = 39,
+  //A6   = 36,
+  //A7   = 35
+};
+
+/******************************************************************************
+ * FUNCTION DECLARATION
+ ******************************************************************************/
+
+void      NINA_ATTRIBUTE pinMode     (NinaPin pin, PinMode mode);
+PinStatus NINA_ATTRIBUTE digitalRead (NinaPin pin);
+void      NINA_ATTRIBUTE digitalWrite(NinaPin pin, PinStatus value);
+int       NINA_ATTRIBUTE analogRead  (NinaPin pin);
+void      NINA_ATTRIBUTE analogWrite (NinaPin pin, int value);
+
+#undef NINA_ATTRIBUTE
+
+#endif /* _NINA_PINS_ */
@@ -0,0 +1,120 @@
+/* Taken from https://github.com/arduino/ArduinoCore-mbed/tree/master/variants/NANO_RP2040_CONNECT */
+
+#pragma once
+
+// Pin definitions taken from:
+//    https://datasheets.raspberrypi.org/pico/pico-datasheet.pdf
+static const uint8_t D0 = (1u);
+static const uint8_t D1 = (0u);
+static const uint8_t D2 = (25u);
+static const uint8_t D3 = (15u);
+static const uint8_t D4 = (16u);
+static const uint8_t D5 = (17u);
+static const uint8_t D6 = (18u);
+static const uint8_t D7 = (19u);
+static const uint8_t D8 = (20u);
+static const uint8_t D9 = (21u);
+static const uint8_t D10 = (5u);
+static const uint8_t D11 = (7u);
+static const uint8_t D12 = (4u);
+static const uint8_t D13 = (6u);
+static const uint8_t D14 = (26u);
+static const uint8_t D15 = (27u);
+static const uint8_t D16 = (28u);
+static const uint8_t D17 = (29u); 
+static const uint8_t D18 = (12u); 
+static const uint8_t D19 = (13u); 
+static const uint8_t D20 = (2u);
+static const uint8_t D21 = (24u);
+static const uint8_t D22 = (22u);
+static const uint8_t D23 = (23u);
+static const uint8_t D24 = (3u);
+static const uint8_t D25 = (8u);
+static const uint8_t D26 = (9u);
+static const uint8_t D27 = (10u);
+static const uint8_t D28 = (11u);
+static const uint8_t D29 = (14u);
+
+static const uint8_t A0 = (26u);
+static const uint8_t A1 = (27u);
+static const uint8_t A2 = (28u);
+static const uint8_t A3 = (29u);
+static const uint8_t A4 = (12u);
+static const uint8_t A5 = (13u);
+
+// LEDs
+#define PIN_LED        (D13)
+
+// Serial
+#define PIN_SERIAL1_TX (D1)
+#define PIN_SERIAL1_RX (D0)
+
+#define PIN_SERIAL2_TX (D25)
+#define PIN_SERIAL2_RX (D26)
+
+// SPI
+#define PIN_SPI0_MISO  (D12)
+#define PIN_SPI0_MOSI  (D11)
+#define PIN_SPI0_SCK   (D13)
+#define PIN_SPI0_SS    (13u)//(D10)
+
+#define PIN_SPI1_MISO  (D25)
+#define PIN_SPI1_MOSI  (D28)
+#define PIN_SPI1_SCK   (D29)
+#define PIN_SPI1_SS    (13u)
+
+// Wire
+#define PIN_WIRE0_SDA  (D18)
+#define PIN_WIRE0_SCL  (D19)
+
+#define PIN_WIRE1_SDA  (26u) //Non c'è
+#define PIN_WIRE1_SCL  (27u) //Non c'è
+
+#define SERIAL_HOWMANY (3u)
+#define SPI_HOWMANY    (2u)
+#define WIRE_HOWMANY   (1u)
+
+#define PINS_COUNT          (30u)
+#define NUM_DIGITAL_PINS    (30u)
+#define NUM_ANALOG_INPUTS   (4u)
+#define NUM_ANALOG_OUTPUTS  (0u)
+#define ADC_RESOLUTION      (12u)
+
+#define LED_BUILTIN PIN_LED
+#define DigitalPinToPinName(p) (p)
+
+static const uint8_t SS = PIN_SPI0_SS;
+static const uint8_t MOSI = PIN_SPI0_MOSI;
+static const uint8_t MISO = PIN_SPI0_MISO;
+static const uint8_t SCK = PIN_SPI0_SCK;
+
+//Nina support
+
+#define NINA_RESETN		(D24)
+#define SerialNina		Serial3
+#define SerialHCI		Serial2
+
+//#define NINA_GPIOIRQ	(21u) // LEDG pin (GPIO26 on NINA)
+#define NINA_GPIO0		(20u) // real GPIO0 on NINA
+
+#define SPIWIFI_SS		(D26)
+#define SPIWIFI_ACK		(D27)
+#define SPIWIFI_RESET	(NINA_RESETN)
+#define SPIWIFI 		(SPI1)
+
+// PDM Interfaces
+// ---------------
+#define PIN_PDM_CLK	 (D23)
+#define PIN_PDM_DIN	 (D22)
+
+//Cose copiate a caso
+
+#define SERIAL_PORT_USBVIRTUAL      SerialUSB
+#define SERIAL_PORT_MONITOR         SerialUSB
+#define SERIAL_PORT_HARDWARE        Serial1
+#define SERIAL_PORT_HARDWARE_OPEN   Serial2
+
+#define CRYPTO_WIRE		Wire
+
+#define USB_MAX_POWER	(500)
+#include "nina_pins.h"
@@ -0,0 +1,133 @@
+/*
+    UBlox SARA helper class for the Challenger RP2040 LTE boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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 <Arduino.h>
+#include <ChallengerLTE.h>
+
+Challenger2040LTEClass::Challenger2040LTEClass() {
+  pinMode(PIN_SARA_ON, OUTPUT);
+  digitalWrite(PIN_SARA_ON, LOW);           // Output register must always be low
+  pinMode(PIN_SARA_ON, INPUT_PULLUP);
+
+  pinMode(PIN_SARA_RST, INPUT_PULLUP);      // Keep as input for now
+
+  pinMode(PIN_SARA_PWR, OUTPUT);
+  digitalWrite(PIN_SARA_PWR, LOW);          // No power to SARA yet
+  serialPortConfigured = false;
+}
+
+// Do a HW reset by applying a low pulse to the reset line for 1mSec
+bool Challenger2040LTEClass::doPowerOn() {
+  bool ret;
+  digitalWrite(PIN_SARA_PWR, HIGH);         // Make sure LDO is on
+  delay(100);                               // let the power stabilize
+  pinMode(PIN_SARA_ON, OUTPUT);             // Pull power on control low
+  delay(150);                               // For 150mS
+  pinMode(PIN_SARA_ON, INPUT_PULLUP);       // before releasing it again.
+  delay(1000);                              // Now wait for 1 second
+  SARA_SERIAL_PORT.begin(DEFAULT_SARA_BAUDRATE);
+  serialPortConfigured = true;
+  ret = isAlive();                          // Makie sure the modem is
+                                            // up and running
+
+  delay(250);                               // Allow for any extra characters
+  // before flushing the input buffer
+  while(SARA_SERIAL_PORT.available()) SARA_SERIAL_PORT.read();
+
+  return ret;
+}
+
+// Checks to see if the modem responds to the "AT" poll command.
+bool Challenger2040LTEClass::isAlive(uint32_t timeout) {
+  SARA_SERIAL_PORT.setTimeout(100);
+  SARA_SERIAL_PORT.println(F("AT"));
+  String rdy = SARA_SERIAL_PORT.readStringUntil('\n');
+  while(!rdy.startsWith(F("OK")) && --timeout) {
+    SARA_SERIAL_PORT.println(F("AT"));
+    rdy = SARA_SERIAL_PORT.readStringUntil('\n');
+    //Serial.println(rdy);
+  }
+  SARA_SERIAL_PORT.setTimeout(1000);      // Restore serial timeout
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Return the current MNO profile
+// Returns -1 if the serial port is not yet setup or the number of the current
+// MNO profile setting from the modem.
+int Challenger2040LTEClass::getMNOProfile() {
+  if (!serialPortConfigured)
+    return -1;
+  SARA_SERIAL_PORT.println(F("AT+UMNOPROF?"));
+  String resp = getResponse();
+  return resp.substring(resp.indexOf("+UMNOPROF: ") + 11).toInt();
+}
+
+// Set a new MNO profile
+// Returns false if the serial port is not yet setup
+bool Challenger2040LTEClass::setMNOProfile(int profile) {
+  if (!serialPortConfigured)
+    return false;
+  String cmd = "AT+UMNOPROF=" + String(profile) + ",1";
+  SARA_SERIAL_PORT.println(cmd);
+
+  if (!getResponse().endsWith("OK")) {
+    return false;
+  }
+  return true;
+}
+
+// Disable power save features
+bool Challenger2040LTEClass::enablePS(bool enable) {
+  if (!serialPortConfigured)
+    return false;
+  if (enable)
+    SARA_SERIAL_PORT.println(F("AT+CPSMS=1"));
+  else
+    SARA_SERIAL_PORT.println(F("AT+CPSMS=0"));
+
+  if (!getResponse().endsWith("OK")) {
+    return false;
+  }
+  return true;
+}
+
+// Get a response from SARA
+// A default serial timeout of 2 seconds allow for reading really slow
+// responses which should accommodate most replies. Replies are then trimmed
+// from control characters and appended with a tab character as a separator.
+//
+String Challenger2040LTEClass::getResponse(int timeout) {
+  SARA_SERIAL_PORT.setTimeout(2000);            // allow for really slow responses
+
+  String resp = SARA_SERIAL_PORT.readStringUntil('\n');
+  resp.trim();
+  String acc = resp;
+  while(resp.indexOf("OK") == -1 && resp.indexOf("ERROR") == -1 && --timeout) {
+    resp = SARA_SERIAL_PORT.readStringUntil('\n');
+    resp.trim();
+    if (resp.length())
+      acc += "\t" + resp;
+  }
+  return acc;
+}
+
+Challenger2040LTEClass Challenger2040LTE;
@@ -0,0 +1,38 @@
+/*
+    UBlox SARA helper class for the Challenger RP2040 LTE boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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
+
+#define DEFAULT_SARA_BAUDRATE      115200
+
+class Challenger2040LTEClass {
+  public:
+    Challenger2040LTEClass();
+    bool doPowerOn();
+    bool isAlive(uint32_t timeout = 50);
+    int getMNOProfile();
+    bool setMNOProfile(int profile);
+    bool enablePS(bool enable = true);
+    String getResponse(int timeout = 5);
+
+  private:
+    bool serialPortConfigured;
+};
+
+extern Challenger2040LTEClass Challenger2040LTE;
@@ -0,0 +1,76 @@
+#pragma once
+
+#define PINS_COUNT          (28u)
+#define NUM_DIGITAL_PINS    (28u)
+#define NUM_ANALOG_INPUTS   (4u)
+#define NUM_ANALOG_OUTPUTS  (0u)
+#define ADC_RESOLUTION      (12u)
+
+// LEDs
+#define PIN_LED             (19u)
+
+// Serial1 (User serial port)
+#define PIN_SERIAL1_TX      (16u)
+#define PIN_SERIAL1_RX      (17u)
+
+// Serial2, connected to SARA-R4XX modem
+#define PIN_SERIAL2_TX      (4u)
+#define PIN_SERIAL2_RX      (5u)
+#define PIN_SERIAL2_CTS     (6u)
+#define PIN_SERIAL2_RTS     (7u)
+#define PIN_SARA_ON         (13u)
+#define PIN_SARA_RST        (14u)
+#define PIN_SARA_PWR        (15u)
+#define SARA_SERIAL_PORT    Serial2
+
+// SPI
+#define PIN_SPI0_MISO       (24u)
+#define PIN_SPI0_MOSI       (23u)
+#define PIN_SPI0_SCK        (22u)
+#define PIN_SPI0_SS         (21u)
+
+// Not pinned out
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (0u)
+#define PIN_WIRE0_SCL       (1u)
+
+// Not pinned out
+#define PIN_WIRE1_SDA       (31u)
+#define PIN_WIRE1_SCL       (31u)
+
+#define SERIAL_HOWMANY      (2u)
+#define SPI_HOWMANY         (1u)
+#define WIRE_HOWMANY        (1u)
+
+#define LED_BUILTIN         PIN_LED
+
+static const uint8_t D0 =   (16u);
+static const uint8_t D1 =   (17u);
+static const uint8_t D2 =   (24u);
+static const uint8_t D3 =   (23u);
+static const uint8_t D4 =   (22u);
+static const uint8_t D5 =   (2u);
+static const uint8_t D6 =   (3u);
+static const uint8_t D7 =   (0u);
+static const uint8_t D8 =   (1u);
+static const uint8_t D9 =   (12u);
+static const uint8_t D10 =  (11u);
+static const uint8_t D11 =  (10u);
+static const uint8_t D12 =  (9u);
+static const uint8_t D13 =  (8u);
+static const uint8_t D14 =  (13u);
+static const uint8_t D15 =  (14u);
+static const uint8_t D16 =  (15u);
+static const uint8_t D17 =  (19u);
+
+static const uint8_t A0 =   (29u);
+static const uint8_t A1 =   (28u);
+static const uint8_t A2 =   (27u);
+static const uint8_t A3 =   (26u);
+static const uint8_t A4 =   (25u);
+static const uint8_t A5 =   (21u);
@@ -0,0 +1,107 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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 <Arduino.h>
+#include <ChallengerWiFi.h>
+
+Challenger2040WiFiClass::Challenger2040WiFiClass() {
+  pinMode(PIN_ESP8285_RST, OUTPUT);
+  digitalWrite(PIN_ESP8285_RST, LOW);       // Hold ESP8285 in reset
+  pinMode(PIN_ESP8285_MODE, OUTPUT);
+  digitalWrite(PIN_ESP8285_MODE, HIGH);     // Prepare for normal start
+}
+
+// Do a HW reset by applying a low pulse to the reset line for 1mSec
+void Challenger2040WiFiClass::doHWReset() {
+  digitalWrite(PIN_ESP8285_RST, LOW);       // Hold ESP8285 in reset
+  delay(1);
+  digitalWrite(PIN_ESP8285_RST, HIGH);      // Release ESP8285 reset
+}
+
+// Set the mode flag high to indicate normal run operation and do a HW
+// reset.
+void Challenger2040WiFiClass::runReset() {  // Prepare ESP8285 for normal op
+  digitalWrite(PIN_ESP8285_MODE, HIGH);     // Prepare for normal start
+  doHWReset();
+}
+
+// Set the mode flag low to indicate flash operation and do a HW
+// reset.
+void Challenger2040WiFiClass::flashReset() { // Prepare ESP8285 for flashing
+  digitalWrite(PIN_ESP8285_MODE, LOW);       // Prepare for normal start
+  doHWReset();
+}
+
+// Wait for the modem to reply with a "ready" prompt. This can be done
+// after a sw or hw reset have been performed to ensure that the AT
+// interpreter is up and running.
+bool Challenger2040WiFiClass::waitForReady() {
+  int timeout = 20;                         // Aprox max 2 sec
+
+  Serial2.begin(DEFAULT_ESP8285_BAUDRATE);
+  Serial2.setTimeout(100);
+  String rdy = Serial2.readStringUntil('\n');
+  while(!rdy.startsWith("ready") && timeout--) {
+    rdy = Serial2.readStringUntil('\n');
+  }
+  Serial2.setTimeout(1000);  // Reset default timeout to 1000
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Reset the ESP8285 and wait for the "ready" prompt to be returned.
+bool Challenger2040WiFiClass::reset() {
+  runReset();
+  return waitForReady();
+}
+
+// Checks to see if the modem responds to the "AT" poll command.
+bool Challenger2040WiFiClass::isAlive() {
+  int timeout = 5;
+
+  Serial2.setTimeout(250);
+  Serial2.println(F("AT"));
+  String rdy = Serial2.readStringUntil('\n');
+  while(!rdy.startsWith(F("OK")) && timeout--) {
+    rdy = Serial2.readStringUntil('\n');
+  }
+  Serial2.setTimeout(1000);
+
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Change the baud rate of the ESP8285 as well as the local UART.
+// No checking is done on the input baud rate so the user must know what
+// baud rates are valid. The function ends by checking if the ESP8285 is
+// reachable by doing an "AT" poll.
+bool Challenger2040WiFiClass::changeBaudRate(int baud) {
+  Serial2.print(F("AT+UART_CUR="));
+  Serial2.print(baud);
+  Serial2.println(F(",8,1,0,0"));
+  delay(100);
+  Serial2.end();
+  Serial2.begin(baud);
+  return isAlive();
+}
+
+Challenger2040WiFiClass Challenger2040WiFi;
@@ -0,0 +1,36 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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
+
+#define DEFAULT_ESP8285_BAUDRATE      115200
+
+class Challenger2040WiFiClass {
+  public:
+    Challenger2040WiFiClass();
+    void doHWReset();
+    void runReset();
+    void flashReset();
+    bool waitForReady();
+    bool reset();
+    bool isAlive();
+    bool changeBaudRate(int baud);
+};
+
+extern Challenger2040WiFiClass Challenger2040WiFi;
@@ -0,0 +1,73 @@
+#pragma once
+
+#define PINS_COUNT          (24u)
+#define NUM_DIGITAL_PINS    (24u)
+#define NUM_ANALOG_INPUTS   (4u)
+#define NUM_ANALOG_OUTPUTS  (0u)
+#define ADC_RESOLUTION      (12u)
+
+// LEDs
+#define PIN_LED             (12u)
+
+// Serial
+#define PIN_SERIAL1_TX      (16u)
+#define PIN_SERIAL1_RX      (17u)
+
+// Connected to ESP8285
+#define PIN_SERIAL2_TX      (4u)
+#define PIN_SERIAL2_RX      (5u)
+#define PIN_ESP8285_RST     (19u)
+#define PIN_ESP8285_MODE    (13u)
+
+// SPI
+#define PIN_SPI0_MISO       (24u)
+#define PIN_SPI0_MOSI       (23u)
+#define PIN_SPI0_SCK        (22u)
+#define PIN_SPI0_SS         (21u)
+
+// Not pinned out
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (0u)
+#define PIN_WIRE0_SCL       (1u)
+
+// Not pinned out
+#define PIN_WIRE1_SDA       (31u)
+#define PIN_WIRE1_SCL       (31u)
+
+#define SERIAL_HOWMANY      (2u)
+#define SPI_HOWMANY         (1u)
+#define WIRE_HOWMANY        (1u)
+
+#define LED_BUILTIN         PIN_LED
+#define NEOPIXEL            (11u)
+
+static const uint8_t D0 =   (16u);
+static const uint8_t D1 =   (17u);
+static const uint8_t D2 =   (24u);
+static const uint8_t D3 =   (23u);
+static const uint8_t D4 =   (22u);
+static const uint8_t D5 =   (2u);
+static const uint8_t D6 =   (3u);
+static const uint8_t D7 =   (0u);
+static const uint8_t D8 =   (1u);
+static const uint8_t D9 =   (6u);
+static const uint8_t D10 =  (7u);
+static const uint8_t D11 =  (8u);
+static const uint8_t D12 =  (9u);
+static const uint8_t D13 = (10u);
+static const uint8_t D14 = (11u);
+static const uint8_t D15 = (12u);
+static const uint8_t D16 = (13u);
+static const uint8_t D17 = (19u);
+
+static const uint8_t A0 = (26u);
+static const uint8_t A1 = (27u);
+static const uint8_t A2 = (28u);
+static const uint8_t A3 = (29u);
+static const uint8_t A4 = (25u);
+static const uint8_t A5 = (21u);
@@ -0,0 +1,107 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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 <Arduino.h>
+#include <ChallengerWiFi.h>
+
+Challenger2040WiFiClass::Challenger2040WiFiClass() {
+  pinMode(PIN_ESP8285_RST, OUTPUT);
+  digitalWrite(PIN_ESP8285_RST, LOW);       // Hold ESP8285 in reset
+  pinMode(PIN_ESP8285_MODE, OUTPUT);
+  digitalWrite(PIN_ESP8285_MODE, HIGH);     // Prepare for normal start
+}
+
+// Do a HW reset by applying a low pulse to the reset line for 1mSec
+void Challenger2040WiFiClass::doHWReset() {
+  digitalWrite(PIN_ESP8285_RST, LOW);       // Hold ESP8285 in reset
+  delay(1);
+  digitalWrite(PIN_ESP8285_RST, HIGH);      // Release ESP8285 reset
+}
+
+// Set the mode flag high to indicate normal run operation and do a HW
+// reset.
+void Challenger2040WiFiClass::runReset() {  // Prepare ESP8285 for normal op
+  digitalWrite(PIN_ESP8285_MODE, HIGH);     // Prepare for normal start
+  doHWReset();
+}
+
+// Set the mode flag low to indicate flash operation and do a HW
+// reset.
+void Challenger2040WiFiClass::flashReset() { // Prepare ESP8285 for flashing
+  digitalWrite(PIN_ESP8285_MODE, LOW);       // Prepare for normal start
+  doHWReset();
+}
+
+// Wait for the modem to reply with a "ready" prompt. This can be done
+// after a sw or hw reset have been performed to ensure that the AT
+// interpreter is up and running.
+bool Challenger2040WiFiClass::waitForReady() {
+  int timeout = 20;                         // Aprox max 2 sec
+
+  Serial2.begin(DEFAULT_ESP8285_BAUDRATE);
+  Serial2.setTimeout(100);
+  String rdy = Serial2.readStringUntil('\n');
+  while(!rdy.startsWith("ready") && timeout--) {
+    rdy = Serial2.readStringUntil('\n');
+  }
+  Serial2.setTimeout(1000);  // Reset default timeout to 1000
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Reset the ESP8285 and wait for the "ready" prompt to be returned.
+bool Challenger2040WiFiClass::reset() {
+  runReset();
+  return waitForReady();
+}
+
+// Checks to see if the modem responds to the "AT" poll command.
+bool Challenger2040WiFiClass::isAlive() {
+  int timeout = 5;
+
+  Serial2.setTimeout(250);
+  Serial2.println(F("AT"));
+  String rdy = Serial2.readStringUntil('\n');
+  while(!rdy.startsWith(F("OK")) && timeout--) {
+    rdy = Serial2.readStringUntil('\n');
+  }
+  Serial2.setTimeout(1000);
+
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Change the baud rate of the ESP8285 as well as the local UART.
+// No checking is done on the input baud rate so the user must know what
+// baud rates are valid. The function ends by checking if the ESP8285 is
+// reachable by doing an "AT" poll.
+bool Challenger2040WiFiClass::changeBaudRate(int baud) {
+  Serial2.print(F("AT+UART_CUR="));
+  Serial2.print(baud);
+  Serial2.println(F(",8,1,0,0"));
+  delay(100);
+  Serial2.end();
+  Serial2.begin(baud);
+  return isAlive();
+}
+
+Challenger2040WiFiClass Challenger2040WiFi;
@@ -0,0 +1,36 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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
+
+#define DEFAULT_ESP8285_BAUDRATE      115200
+
+class Challenger2040WiFiClass {
+  public:
+    Challenger2040WiFiClass();
+    void doHWReset();
+    void runReset();
+    void flashReset();
+    bool waitForReady();
+    bool reset();
+    bool isAlive();
+    bool changeBaudRate(int baud);
+};
+
+extern Challenger2040WiFiClass Challenger2040WiFi;
@@ -0,0 +1,75 @@
+#pragma once
+
+#include <ChallengerWiFi.h>
+
+#define PINS_COUNT          (24u)
+#define NUM_DIGITAL_PINS    (24u)
+#define NUM_ANALOG_INPUTS   (4u)
+#define NUM_ANALOG_OUTPUTS  (0u)
+#define ADC_RESOLUTION      (12u)
+
+// LEDs
+#define PIN_LED             (12u)
+
+// Serial
+#define PIN_SERIAL1_TX      (16u)
+#define PIN_SERIAL1_RX      (17u)
+
+// Connected to ESP8285
+#define PIN_SERIAL2_TX      (4u)
+#define PIN_SERIAL2_RX      (5u)
+#define PIN_ESP8285_RST     (19u)
+#define PIN_ESP8285_MODE    (13u)
+
+// SPI
+#define PIN_SPI0_MISO       (24u)
+#define PIN_SPI0_MOSI       (23u)
+#define PIN_SPI0_SCK        (22u)
+#define PIN_SPI0_SS         (21u)
+
+// Not pinned out
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (0u)
+#define PIN_WIRE0_SCL       (1u)
+
+// Not pinned out
+#define PIN_WIRE1_SDA       (31u)
+#define PIN_WIRE1_SCL       (31u)
+
+#define SERIAL_HOWMANY      (2u)
+#define SPI_HOWMANY         (1u)
+#define WIRE_HOWMANY        (1u)
+
+#define LED_BUILTIN         PIN_LED
+#define NEOPIXEL            (11u)
+
+static const uint8_t D0 =   (16u);
+static const uint8_t D1 =   (17u);
+static const uint8_t D2 =   (24u);
+static const uint8_t D3 =   (23u);
+static const uint8_t D4 =   (22u);
+static const uint8_t D5 =   (2u);
+static const uint8_t D6 =   (3u);
+static const uint8_t D7 =   (0u);
+static const uint8_t D8 =   (1u);
+static const uint8_t D9 =   (6u);
+static const uint8_t D10 =  (7u);
+static const uint8_t D11 =  (8u);
+static const uint8_t D12 =  (9u);
+static const uint8_t D13 = (10u);
+static const uint8_t D14 = (14u);
+static const uint8_t D15 = (15u);
+static const uint8_t D16 = (18u);
+static const uint8_t D17 = (20u);
+
+static const uint8_t A0 = (26u);
+static const uint8_t A1 = (27u);
+static const uint8_t A2 = (28u);
+static const uint8_t A3 = (29u);
+static const uint8_t A4 = (25u);
+static const uint8_t A5 = (21u);
@@ -0,0 +1,52 @@
+#pragma once
+
+// LEDs
+#define PIN_LED             (2u)
+
+// Neopixel
+#define PIN_NEOPIXEL        (11u)
+#define NUM_NEOPIXEL        (2u)
+#define PIN_RGB             PIN_NEOPIXEL
+
+// Buzzer
+#define PIN_BUZZER          (22u)
+
+// Button
+#define PIN_BUTTON			(20u)
+
+
+
+// Serial 1
+#define PIN_SERIAL1_TX      (0u)
+#define PIN_SERIAL1_RX      (1u)
+
+// Serial 2 (Not pinned out)
+#define PIN_SERIAL2_TX      (31u)
+#define PIN_SERIAL2_RX      (31u)
+
+// SPI 0
+#define PIN_SPI0_MISO       (16u)
+#define PIN_SPI0_MOSI       (19u)
+#define PIN_SPI0_SCK        (18u)
+#define PIN_SPI0_SS         (17u)
+
+// SPI 1 (Not pinned out)
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (0u)
+#define PIN_WIRE0_SCL       (1u)
+
+#define PIN_WIRE1_SDA       (26u)
+#define PIN_WIRE1_SCL       (27u)
+
+
+
+#define SERIAL_HOWMANY      (1u)
+#define SPI_HOWMANY         (1u)
+#define WIRE_HOWMANY        (2u)
+
+#include "../generic/common.h"
@@ -0,0 +1,57 @@
+#pragma once
+
+// LEDs
+#define PIN_LED             (3u)
+
+// Neopixel
+#define PIN_NEOPIXEL        (18u)
+#define NUM_NEOPIXEL        (2u)
+#define PIN_RGB             PIN_NEOPIXEL
+
+// Buzzer
+#define PIN_BUZZER          (22u)
+
+// Motor Driver
+#define PIN_M1A	            (8u)
+#define PIN_M1B	            (9u)
+#define PIN_M2A	            (10u)
+#define PIN_M2B	            (11u)
+
+// Voltage Monitor
+#define PIN_VBATT           (29u)
+#define PIN_VOLTAGE_MONITOR PIN_VBATT
+
+
+
+// Serial
+#define PIN_SERIAL1_TX      (0u)
+#define PIN_SERIAL1_RX      (1u)
+
+#define PIN_SERIAL2_TX      (4u)
+#define PIN_SERIAL2_RX      (5u)
+
+// SPI (Not pinned out)
+#define PIN_SPI0_MISO       (31u)
+#define PIN_SPI0_MOSI       (31u)
+#define PIN_SPI0_SCK        (31u)
+#define PIN_SPI0_SS         (31u)
+
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (16u)
+#define PIN_WIRE0_SCL       (17u)
+
+#define PIN_WIRE1_SDA       (2u)
+#define PIN_WIRE1_SCL       (3u)
+
+
+
+#define SERIAL_HOWMANY      (2u)
+#define SPI_HOWMANY         (0u)
+#define WIRE_HOWMANY        (2u)
+
+#include "../generic/common.h"
@@ -0,0 +1,107 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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 <Arduino.h>
+#include <Ilabs2040WiFiClass.h>
+
+Ilabs2040WiFiClass::Ilabs2040WiFiClass() {
+  pinMode(PIN_ESP_RESET, OUTPUT);
+  digitalWrite(PIN_ESP_RESET, LOW);     // Hold ESP8285 in reset
+  pinMode(PIN_ESP_MODE, OUTPUT);
+  digitalWrite(PIN_ESP_MODE, HIGH);     // Prepare for normal start
+}
+
+// Do a HW reset by applying a low pulse to the reset line for 1mSec
+void Ilabs2040WiFiClass::doHWReset() {
+  digitalWrite(PIN_ESP_RESET, LOW);     // Hold ESP8285 in reset
+  delay(1);
+  digitalWrite(PIN_ESP_RESET, HIGH);    // Release ESP8285 reset
+}
+
+// Set the mode flag high to indicate normal run operation and do a HW
+// reset.
+void Ilabs2040WiFiClass::runReset() {   // Prepare ESP8285 for normal op
+  digitalWrite(PIN_ESP_MODE, HIGH);     // Prepare for normal start
+  doHWReset();
+}
+
+// Set the mode flag low to indicate flash operation and do a HW
+// reset.
+void Ilabs2040WiFiClass::flashReset() { // Prepare ESP8285 for flashing
+  digitalWrite(PIN_ESP_MODE, LOW);      // Prepare for normal start
+  doHWReset();
+}
+
+// Wait for the modem to reply with a "ready" prompt. This can be done
+// after a sw or hw reset have been performed to ensure that the AT
+// interpreter is up and running.
+bool Ilabs2040WiFiClass::waitForReady() {
+  int timeout = 20;                     // Aprox max 2 sec
+
+  ESP_SERIAL_PORT.begin(DEFAULT_ESP8285_BAUDRATE);
+  ESP_SERIAL_PORT.setTimeout(100);
+  String rdy = ESP_SERIAL_PORT.readStringUntil('\n');
+  while(!rdy.startsWith("ready") && timeout--) {
+    rdy = ESP_SERIAL_PORT.readStringUntil('\n');
+  }
+  ESP_SERIAL_PORT.setTimeout(1000);   // Reset default timeout to 1000
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Reset the ESP8285 and wait for the "ready" prompt to be returned.
+bool Ilabs2040WiFiClass::reset() {
+  runReset();
+  return waitForReady();
+}
+
+// Checks to see if the modem responds to the "AT" poll command.
+bool Ilabs2040WiFiClass::isAlive() {
+  int timeout = 5;
+
+  ESP_SERIAL_PORT.setTimeout(250);
+  ESP_SERIAL_PORT.println(F("AT"));
+  String rdy = ESP_SERIAL_PORT.readStringUntil('\n');
+  while(!rdy.startsWith(F("OK")) && timeout--) {
+    rdy = ESP_SERIAL_PORT.readStringUntil('\n');
+  }
+  ESP_SERIAL_PORT.setTimeout(1000);
+
+  if (timeout)
+    return true;
+  return false;
+}
+
+// Change the baud rate of the ESP8285 as well as the local UART.
+// No checking is done on the input baud rate so the user must know what
+// baud rates are valid. The function ends by checking if the ESP8285 is
+// reachable by doing an "AT" poll.
+bool Ilabs2040WiFiClass::changeBaudRate(int baud) {
+  ESP_SERIAL_PORT.print(F("AT+UART_CUR="));
+  ESP_SERIAL_PORT.print(baud);
+  ESP_SERIAL_PORT.println(F(",8,1,0,0"));
+  delay(100);
+  ESP_SERIAL_PORT.end();
+  ESP_SERIAL_PORT.begin(baud);
+  return isAlive();
+}
+
+Ilabs2040WiFiClass Ilabs2040WiFi;
@@ -0,0 +1,36 @@
+/*
+    ESP8285 helper class for the Challenger RP2040 WiFi boards
+
+    Copyright (c) 2021 P. Oldberg <pontus@ilabs.se>
+
+    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
+
+#define DEFAULT_ESP8285_BAUDRATE      115200
+
+class Ilabs2040WiFiClass {
+  public:
+    Ilabs2040WiFiClass();
+    void doHWReset();
+    void runReset();
+    void flashReset();
+    bool waitForReady();
+    bool reset();
+    bool isAlive();
+    bool changeBaudRate(int baud);
+};
+
+extern Ilabs2040WiFiClass Ilabs2040WiFi;
@@ -0,0 +1,82 @@
+#pragma once
+
+#include <Ilabs2040WiFiClass.h>
+
+#define PINS_COUNT          (26u)
+#define NUM_DIGITAL_PINS    (26u)
+#define NUM_ANALOG_INPUTS   (4u)
+#define NUM_ANALOG_OUTPUTS  (0u)
+#define ADC_RESOLUTION      (12u)
+
+// Connected to ESP8285
+#define PIN_SERIAL1_TX      (0u)
+#define PIN_SERIAL1_RX      (1u)
+#define PIN_ESP_RESET       (2u)
+#define PIN_ESP_MODE        (3u)
+#define PIN_ESP_TXD         PIN_SERIAL1_TX
+#define PIN_ESP_RXD         PIN_SERIAL1_RX
+#define ESP_SERIAL_PORT     Serial1
+
+// Serial
+#define PIN_SERIAL2_TX      (8u)
+#define PIN_SERIAL2_RX      (9u)
+
+// SPI
+#define PIN_SPI0_MISO       (24u)
+#define PIN_SPI0_MOSI       (23u)
+#define PIN_SPI0_SCK        (22u)
+#define PIN_SPI0_SS         (21u)
+
+// Not pinned out
+#define PIN_SPI1_MISO       (31u)
+#define PIN_SPI1_MOSI       (31u)
+#define PIN_SPI1_SCK        (31u)
+#define PIN_SPI1_SS         (31u)
+
+// Wire
+#define PIN_WIRE0_SDA       (4u)
+#define PIN_WIRE0_SCL       (5u)
+
+// Not pinned out
+#define PIN_WIRE1_SDA       (31u)
+#define PIN_WIRE1_SCL       (31u)
+
+#define SERIAL_HOWMANY      (2u)
+#define SPI_HOWMANY         (1u)
+#define WIRE_HOWMANY        (1u)
+
+static const uint8_t D0 = (0u);     // Internal to the board
+static const uint8_t D1 = (1u);     // Internal to the board
+static const uint8_t D2 = (2u);     // Internal to the board
+static const uint8_t D3 = (3u);     // Internal to the board
+static const uint8_t D4 = (4u);
+static const uint8_t D5 = (5u);
+static const uint8_t D6 = (6u);
+static const uint8_t D7 = (7u);
+static const uint8_t D8 = (8u);
+static const uint8_t D9 = (9u);
+static const uint8_t D10 = (10u);
+static const uint8_t D11 = (11u);
+static const uint8_t D12 = (12u);
+static const uint8_t D13 = (13u);
+static const uint8_t D14 = (14u);
+static const uint8_t D15 = (15u);
+static const uint8_t D16 = (16u);
+static const uint8_t D17 = (17u);
+static const uint8_t D18 = (18u);
+static const uint8_t D19 = (19u);
+static const uint8_t D20 = (20u);
+static const uint8_t D21 = (21u);
+static const uint8_t D22 = (22u);
+static const uint8_t D23 = (23u);
+static const uint8_t D24 = (24u);
+static const uint8_t D25 = (25u);
+static const uint8_t D26 = (26u);
+static const uint8_t D27 = (27u);
+static const uint8_t D28 = (28u);
+static const uint8_t D29 = (29u);
+
+static const uint8_t A0 = (26u);
+static const uint8_t A1 = (27u);
+static const uint8_t A2 = (28u);
+static const uint8_t A3 = (29u);
@@ -0,0 +1,39 @@
+#pragma once
+
+// Pin definitions taken from:
+//    https://datasheets.raspberrypi.org/pico/pico-datasheet.pdf
+
+
+// LEDs
+#define PIN_LED        (25u)
+
+// Serial
+#define PIN_SERIAL1_TX (0u)
+#define PIN_SERIAL1_RX (1u)
+
+#define PIN_SERIAL2_TX (8u)
+#define PIN_SERIAL2_RX (9u)
+
+// SPI
+#define PIN_SPI0_MISO  (20u)
+#define PIN_SPI0_MOSI  (19u)
+#define PIN_SPI0_SCK   (18u)
+#define PIN_SPI0_SS    (1u)
+
+#define PIN_SPI1_MISO  (12u)
+#define PIN_SPI1_MOSI  (11u)
+#define PIN_SPI1_SCK   (10u)
+#define PIN_SPI1_SS    (13u)
+
+// Wire
+#define PIN_WIRE0_SDA  (8u) 
+#define PIN_WIRE0_SCL  (9u)
+
+#define PIN_WIRE1_SDA  (2u) 
+#define PIN_WIRE1_SCL  (3u)
+
+#define SERIAL_HOWMANY (3u)
+#define SPI_HOWMANY    (2u)
+#define WIRE_HOWMANY   (2u)
+
+#include "../generic/common.h"
@@ -0,0 +1,37 @@
+#pragma once
+
+// Taken from schematic at https://cdn.sparkfun.com/assets/e/2/7/6/b/ProMicroRP2040_Graphical_Datasheet.pdf
+
+// LEDs
+#define PIN_LED        (25u)
+
+#define PIN_NEOPIXEL   (25)
+#define NUM_NEOPIXEL   (1)
+
+// UARTs
+#define PIN_SERIAL1_TX (0u)
+#define PIN_SERIAL1_RX (1u)
+#define PIN_SERIAL2_TX (8u)
+#define PIN_SERIAL2_RX (9u)
+
+// SPI
+#define PIN_SPI0_MISO  (20u)
+#define PIN_SPI0_MOSI  (23u)
+#define PIN_SPI0_SCK   (22u)
+#define PIN_SPI0_SS    (21u)
+#define PIN_SPI1_MISO  (31u)
+#define PIN_SPI1_MOSI  (31u)
+#define PIN_SPI1_SCK   (31u)
+#define PIN_SPI1_SS    (31u) // not pinned out
+
+// Wire
+#define PIN_WIRE0_SDA  (16u)
+#define PIN_WIRE0_SCL  (17u)
+#define PIN_WIRE1_SDA  (31u)
+#define PIN_WIRE1_SCL  (31u)
+
+#define SERIAL_HOWMANY (3u)
+#define SPI_HOWMANY    (1u)
+#define WIRE_HOWMANY   (1u)
+
+#include "../generic/common.h"
@@ -0,0 +1,39 @@
+#pragma once
+
+// Pin definitions taken from:
+//    https://datasheets.raspberrypi.org/pico/pico-datasheet.pdf
+
+
+// LEDs
+#define PIN_LED        (25u)
+
+// Serial
+#define PIN_SERIAL1_TX (0u)
+#define PIN_SERIAL1_RX (1u)
+
+#define PIN_SERIAL2_TX (8u)
+#define PIN_SERIAL2_RX (9u)
+
+// SPI
+#define PIN_SPI0_MISO  (16u)
+#define PIN_SPI0_MOSI  (19u)
+#define PIN_SPI0_SCK   (18u)
+#define PIN_SPI0_SS    (17u)
+
+#define PIN_SPI1_MISO  (12u)
+#define PIN_SPI1_MOSI  (15u)
+#define PIN_SPI1_SCK   (14u)
+#define PIN_SPI1_SS    (13u)
+
+// Wire
+#define PIN_WIRE0_SDA  (4u)
+#define PIN_WIRE0_SCL  (5u)
+
+#define PIN_WIRE1_SDA  (22u)
+#define PIN_WIRE1_SCL  (23u)
+
+#define SERIAL_HOWMANY (3u)
+#define SPI_HOWMANY    (2u)
+#define WIRE_HOWMANY   (2u)
+
+#include "../generic/common.h"
@@ -0,0 +1 @@
+#include "../generic/pins_arduino.h"
Author	SHA1	Message	Date
Earle F. Philhower, III	5cc9835303	Add warning not to edit boards.txt (#383 )	2021-12-23 08:09:59 -08:00
Earle F. Philhower, III	48877984b7	Remove redundant board.mcu in boards.txt, fix precompiled libs (#382 ) * Remove redundant/wrong second board.mcu in boards.txt Fixes #380 Boards.txt had the setting board.mcu twice. The first one was correct, while the second one wasn't and shouldn't have been there. Remove it. * Include fix from @rei-vilo in #381	2021-12-23 07:55:34 -08:00
Earle F. Philhower, III	a58f49018a	Add a poor-man's software FIFO for serial UART reads (#379 ) Because the hardware FIFO is quite small and doesn't report the actual number of bytes available, implement a software FIFO that will pull all available bytes out of the HW FIFO on any Serial call. It's not as efficient or as bulletproof as an IRQ based method, but it is simpler to implement and can help with issues like #378	2021-12-23 07:41:34 -08:00
Earle F. Philhower, III	7120a1508c	Update to SDK version 1.3.0 (#371 )	2021-12-14 18:59:24 -08:00
Pontus Oldberg	a808f4ae6a	Adds option for setting USB max power in makeboards.py (#370 )	2021-12-10 04:11:22 -08:00
Pontus Oldberg	4d1f5baa7e	Adds a lightweight support class for LTE functionality (#367 )	2021-12-09 09:55:09 -08:00
Pontus Oldberg	f106035100	Adds support for Challenger NB RP2040 WiFi board and RPICO32 module (#366 )	2021-12-07 09:44:38 -08:00
Earle F. Philhower, III	21f49d032b	Update README.md	2021-12-06 00:03:11 -08:00
Wai Weng	341307cb8d	Added new variant: Cytron Maker Nano RP2040. (#365 )	2021-12-06 00:02:54 -08:00
Earle F. Philhower, III	85990ff51d	Support CMSIS and rename conflicting header file (#362 )	2021-12-03 12:49:34 -08:00
Eric Lind	238a6c83db	Update pins_arduino.h for challenger_2040_wifi (#356 ) Adding definitions for internal reset and mode pins for ESP8285.	2021-12-01 08:08:37 -08:00
Earle F. Philhower, III	77f03a44b6	Add WIZnet W5100S-EVB-Pico board (#355 )	2021-11-30 17:11:08 -08:00
Earle F. Philhower, III	29756de336	Update to SDFat 2.1.1 with UTF-8 support (#343 )	2021-11-30 17:06:58 -08:00
Earle F. Philhower, III	1afbbaba63	Add RTC headers to path and pico_utils to link (#353 ) Fixes #348 Add the RTC header path in the SDK to the Arduino build path. Also add pico_utils to the libpico.a for the datetime_to_str call. Note that the pico_sdk has a bug in the datetime.h header so you need to manually bracket the include file as "C": extern "C" { #include "pico/util/datetime.h" }	2021-11-28 09:00:14 -08:00
Maximilian Gerhardt	52b3120448	Correct typo in PlatformIO docs (#342 )	2021-11-02 08:54:47 -07:00
Earle F. Philhower, III	b7d76bd51d	Add RTTI menu to support apps which need RTTI (#338 ) By default RTTI (Run-Time Type Information) is disabled because most apps don't need run time type info enabled. However, certain libraries expect to be able to query types of objects at runtime, so add a menu to enable it.	2021-10-29 08:22:27 -07:00
Earle F. Philhower, III	c0411eefeb	Update README.md	2021-10-29 08:13:08 -07:00
uPesy Electronics	3d821f73a4	Add board variant for uPesy RP2040 DevKit (#335 )	2021-10-29 08:12:45 -07:00
Earle F. Philhower, III	1726f56a27	Update README.md	2021-10-29 08:04:33 -07:00
Wai Weng	a305b30d90	Added board variants Cytron Maker Pi RP2040. (#340 )	2021-10-29 08:04:15 -07:00
Giampiero Baggiani	9bed59858b	Disable pull-up/pull-down when setting pin as input (#332 ) In `pinMode()` I think it would be better to call `gpio_disable_pulls()` on the ulPin when ulMode == INPUT. Adding `gpio_disable_pulls(RP_PIN);` after `pinMode(RP_PIN, INPUT);` solves the issue.	2021-10-06 03:26:11 -07:00
apendley	cf63040c5a	Fix Wire pin definitions on ItsyBitsy (#325 )	2021-09-26 18:19:49 -07:00
Leonardo La Rocca	e8ec79290b	Reverted Wire and Wire1 for Melopero (#323 )	2021-09-26 18:11:25 -07:00
Mike Lynch	0c22150fdb	Add compiler Optimize option (#322 )	2021-09-26 18:05:35 -07:00
Ha Thach	423476dc87	Change qtpy boot2 to w25q080_2_padded (#321 )	2021-09-22 07:40:03 -07:00
Leonardo La Rocca	bfa3819b0d	Melopero Shake: Switched Wire1 with Wire for simpler use (#320 )	2021-09-22 07:39:25 -07:00
Earle F. Philhower, III	adf1c88c27	Fix spelling and update readme. Prep for 1.9.5 (#319 )	2021-09-19 13:43:26 -07:00
Dan Halbert	ad905ae992	Build libpico.a with PICO_XOSC_STARTUP_DELAY_MULTIPLIER=64 (#315 ) Fixes #312	2021-09-19 13:31:39 -07:00
Leonardo La Rocca	608a5da480	Adds board variant definition for Melopero Shake RP2040 (#318 )	2021-09-19 13:26:33 -07:00
Maximilian Gerhardt	3df3f0741a	Add PlatformIO support (#250 ) * Add package.json To make package easily integratable with PlatformIO * Correct name back to original one * Format package.json * Add first shot at builder script * Add USB stack flags, fix compile flags * Formatting * Add more link & USB flags * Build Boot2 bootloader * Formatting * Generate linkerscript, linker fixes * Fix linkflags, make firmware runnable * Update USB flags and RAM size * Correct USB flags, add dynamic sketch partitioning * Restructure filesystem size and flash size logic into platform code * Move C++ only flags to CXXFLAGS * Add PlatformIO documentation * Link to new platform.io document in the docs TOC * Fix typos in platformio docs * Fix one additional typo in platformio.rst * Update docs * Remove wrongly commited build folder	2021-09-13 21:28:07 -07:00
SirSydom	3585c58688	Reset the SDA and SCL pins to INPUT at Wire.end() to prevent multiple pins connected to I2C when changing pins (#302 )	2021-09-03 08:40:18 -07:00
Earle F. Philhower, III	a8121f31d4	Fix pulseIn detection (#293 ) Fixes #289	2021-08-30 12:40:38 -07:00
AustinMorris	38c005c208	Fix wire defines on feather (#281 )	2021-08-23 20:45:12 -07:00
Pontus Oldberg	cd91d3ef0f	Added minimal HW support for onboard WiFi modem. (#287 )	2021-08-23 20:34:25 -07:00
Pontus Oldberg	02e8577f45	Add support for reverse numbering of analog pins. (#283 )	2021-08-17 09:44:28 -07:00
Earle F. Philhower, III	8451bc21ec	Don't use no-c++-exceptions version of libstdc++ (#280 ) Per #276, #277, #274 there seems to be an issue with interrupts and some other low-level ARM operations when using the distributed libstdc++. Use the default libstdc++ built with the toolchain, instead. Fixes #277 Fixes #276 Fixes #274	2021-08-12 12:50:39 -07:00
Earle F. Philhower, III	28fe90e504	Update README.md	2021-08-12 08:55:12 -07:00
Pontus Oldberg	2c29314578	Add support for our new Challenger RP2040 board with LTE modem. (#275 ) * Adds support for Challenger RP2040 WiFi boards * Added Challenger board to makeboards build script * Adds new challenger board with LTE modem. * Updated after getting approved PID from Raspberry Pi	2021-08-12 08:42:09 -07:00
Earle F. Philhower, III	e196db9645	Update README.md	2021-07-29 09:02:45 -07:00
Pontus Oldberg	733aca5ac3	Adds support for Challenger RP2040 WiFi boards (#268 )	2021-07-29 08:59:27 -07:00
Earle F. Philhower, III	177a2d03a1	Update pull-request.yml	2021-07-29 07:56:10 -07:00
Earle F. Philhower, III	fec3ea882d	Minor paranoid nullptr checks in USB interface (#267 ) Identify some spots that GCC's -fanalyzer noted might need nullptr checks, and add them.	2021-07-28 18:11:25 -07:00
Earle F. Philhower, III	580970cd72	Use Stream::setTimeout to specify I2C TO (#263 ) Use the existing Arduino Stream method of setTimeout to set the Wire I2C timeout delay. Fixes #260	2021-07-23 15:20:34 -07:00
Earle F. Philhower, III	c13bb1ec2b	Make multiple SDFS/LittleFS.begin calls noops (#262 ) When LittleFS.begin() or SDFS.begin() is called after the filesystem is already mounted, don't unmount/remount. When an unmount happens, all old Files become invalid (but the core doesn't know this), so you would end up with random crashes in FS code. Now, check for _mounted, and if so just return immediately from begin().	2021-07-23 14:16:57 -07:00
Ubi de Feo	c777dd1657	Fix JSON URL (#261 ) you had "esrle" instead of "earle" in the GH URL :)	2021-07-23 08:17:32 -07:00
Earle F. Philhower, III	cb9931f3e8	Set available() to 0 when Wire.requestFrom fails (#259 ) Wire::requestFrom() returns the number of bytes read from the slave. In the case of error, the slave can end up returning a very large integer for PICO_GENERIC_ERROR which would then be used as the # of bytes read causing crashes and errors. Running TalkingToMyself without connecting the I2C ports would show this behavior. Now, when PICO_GENERIC_ERROR is returned, set the read-back buffer len to 0 explicitly.	2021-07-21 18:59:24 -07:00
Giampiero Baggiani	6b6254e84a	Added missing SPI::setCS(pin) in docs (#256 )	2021-07-20 03:45:01 -07:00
Maximilian Gerhardt	61c6305aa8	Fix upload file path escaping on Windows (#254 )	2021-07-19 08:46:55 -07:00
Earle F. Philhower, III	b43056cd73	Avoid issues w/other installed Windows Pythons (#253 ) When a Python MSI/etc. is installed under Windows, it sets a global PYTHONHOME and other variables. Our shipped Python can end up using these variables and attempt to load the wrong PYC files and fail to run. Avoid by using -I isolated mode in Python calls Fixes #252	2021-07-19 08:16:22 -07:00
Earle F. Philhower, III	e4c144829c	Remove exception handling code, save RAM and FLASH (#245 ) Use a libstdc++ compiled with -fno-exceptions to avoid including the code needed to unwind C++ exceptions. Saves ~4K RAM and ~5K flash.	2021-07-17 10:55:47 -07:00
Earle F. Philhower, III	05356da2c5	Fix PWM frequency at low and high frequencies (#244 ) The PWM HW can only divide 125MHZ sysclk by 1...256. That's only down to about 500khz. If the max count of the PWM (analogWriteScale) is too low then the actual PWM period will be much less than desired (and PWM frequency of course much higher). For example, at analogWriteFreq(100); analogWriteScale(256); the true PWM period would be 125M / 256 (pwmdiv) / 256 (scale) = ~2khz. Conversely, at high frequencies and large scales it is impossible to achieve the requested frequency and a much lower one would be generated. For example: freq(60K), scale(32768). PWM period = 125M / 1 (pwmdiv) / 32768 = ~4kHz. Avoid this by adjusting the analogWrite scale in the core to either increase the PWM count for low frequencies, or decrease it for high frequencies. This is done behind the scenes and code is not required to be changed. The PWM frequency will still not be perfcetly exact due to the divider HW and clocks involved, but it will be very close across the whole range. Fixes #234	2021-07-15 08:34:53 -07:00
majbthrd	47a4d9f803	Add pico-debug support (#239 )	2021-07-07 12:55:03 -07:00
Earle F. Philhower, III	e4185ce4ce	Update toolchain, add CMSIS-DAP to OpenOCD (#241 ) Enable use of the included openocd binary with pico-debug	2021-07-05 19:29:47 -07:00
Earle F. Philhower, III	c539742e13	Disable ignored-qualifier warning in SDK (#238 ) The Pico SDK has some magic with const pointers that generates lots of "ignored qualifer" warnings on the more pedantic modes. To clean the normal builds up, disable this warning for now. At some point a PR to the PICO-SDK may be indicated.	2021-07-04 13:46:50 -07:00
Earle F. Philhower, III	ebd2289971	Add warning flags to build, catch missing return (#237 ) Fixes #236 Compiler warning flags were completely ignored/missed in platform.txt. Add them, as normal, and include -Werror=return-type because GCC will produce crashing apps when a function return value is missing.	2021-07-04 12:30:59 -07:00
Earle F. Philhower, III	d67329a2b8	Rename assembly dir to boot2, only has boot2.Ss (#230 )	2021-06-30 08:42:13 -07:00
Ha Thach	3a9703fc20	Update tinyusb 1.3.0 (#228 ) * update included tinyusb to 1.2.0 move tusb_config.h from core to library for more portability * pump tinyusb * update tinyusb to 1.3.0 * try to fix ci warning	2021-06-30 08:22:36 -07:00
Earle F. Philhower, III	856b105ab9	Clean up include paths, remove duplicates/invalids (#229 )	2021-06-30 08:13:19 -07:00
Earle F. Philhower, III	03e740a511	Add CPU cycle counter accessors (#226 ) Use the 24-bit SYSTICK peripheral, wrapped in logic to extend it to a full 32 or 64bits. W/o the wrapper, SYSTICK will wrap around in ~100ms. Adds rp2040.getCycleCount() and rp2040.getCycleCount64() Clean up the libpico build process as crt0.S from the pico-sdk should be directly used. Clean up the keywords file.	2021-06-28 20:53:40 -07:00
Earle F. Philhower, III	e628c8e211	Upgrade Newlib to include 64-bit/8-bit %llu/%hhd (#227 )	2021-06-28 20:46:08 -07:00
Ha Thach	7eca6c609f	Use correct tusb_config.h for built-in usb (pico-sdk) (#219 ) Fix issue with usbd_desc_cfg value may not be initialized as zero.	2021-06-26 09:37:41 -07:00
Earle F. Philhower, III	f299120798	Remove accidental debug message	2021-06-25 18:47:02 -07:00
Earle F. Philhower, III	aac8146f00	Clear I2C status on short slave reads Fixes #222 The HW needs to have the TXC_ABRT flag cleared when a slave transmission is cut short by the master, or else it will effectively break the I2C bus and never recover.	2021-06-25 18:39:44 -07:00
Earle F. Philhower, III	35c974d4c0	Fix file creation on SD and SDFS (#216 ) The O_CREAT/etc. flags on the Pico are a full 32-bits in size, but the core was generating a flag for SdFat using an 8-bit type, so all the O_CREAT, O_TRUNC, O_APPEND, etc. flags got cut off. Fix the flag size. Fixes #214	2021-06-19 12:15:11 -07:00
Earle F. Philhower, III	27476815ab	Fix SerialUART flush (#215 ) Serial1.flush/Serial2.flush was not waiting for the proper FIFO to clear. Use the proper call from the Pico SDK. Thanks to Peter Remias for noting it.	2021-06-16 08:25:24 -07:00
Earle F. Philhower, III	b02b9c4be8	Add PDM library for Arduino Nano RP2040 Connect (#213 ) * Add PDM library for Arduino Nano RP2040 Connect * No PDM test in CI, only works on Arduino Nano RP2040	2021-06-16 08:17:09 -07:00
Earle F. Philhower, III	6afcf5881d	Initial Arduino Nano RP2040 Connect support (#212 ) Thanks to @Claupio for the bringup! Reference #208	2021-06-14 08:59:52 -07:00
Earle F. Philhower, III	30704a7c5e	Obey timeout value on SerialUART.read/.peek (#211 ) Fixes a hang when reading from the Serial UART ports because before the core would pause indefinitely for the next character. Now, wait up to Serial.setTimeout() milliseconds and if it times out return -1 to the app. Fixes #210	2021-06-13 14:11:23 -07:00
Earle F. Philhower, III	08b6748d79	Update to PICO-SDK version 1.2.0 (#207 ) Minor rev to the tinyUSB version used, new ID function.	2021-06-11 12:48:09 -07:00
Earle F. Philhower, III	bedfbda372	Clear PIO FIFOs when updating Tone and Servos (#206 ) The PIO programs that generate tone() and Servo() use the TX FIFO to receive updates to the period/duty cycle. The original code would push into the FIFO (potentially blocking the app if the FIFO was full) and generate at least one cycle of every value written into the control. Basically, the output would lag the changes by 1 cycle or more (which could be 20ms+ on Servo). Fix this by clearing any old, ungrabbed values from the FIFO before sending a new one to the program. Instead of a FIFO, there is effectively now just a control register and updates will be immediate. Update the Siren.ino example with delays because now the tone() calls will not block and run 10x+ faster.	2021-06-11 12:27:48 -07:00
Earle F. Philhower, III	9fbf6ab35d	Clean up Arduino.h header, remove duplicates (#205 ) Many functions are defined inside the api/Common.h, so remove them from the Arduino.h header to have them appear only once. Fix up the abs() macro to avoid macro problems, add round()	2021-06-11 12:23:23 -07:00
Earle F. Philhower, III	793496da98	Set GPIO digital output on digitalWrite (#203 ) Fixes #202	2021-06-10 07:58:09 -07:00
Earle F. Philhower, III	81cbf8357d	Update README.md	2021-06-08 08:39:58 -07:00
Earle F. Philhower, III	55a260e4e8	Update README.md	2021-06-08 08:35:32 -07:00
Earle F. Philhower, III	5c71564844	Add PIOASM online tool link, thanks @jake653! (#197 )	2021-06-08 08:34:53 -07:00
Earle F. Philhower, III	bf4f0454e1	Update README.md	2021-06-08 08:02:07 -07:00
Earle F. Philhower, III	33b9e915d9	Add new boards to package.json	2021-06-08 07:02:25 -07:00
Earle F. Philhower, III	77712f5904	Add SparkFun ProMicro RP2040 (#196 ) It's still OOS, so hookup taken from their schematics.	2021-06-08 06:55:13 -07:00
Earle F. Philhower, III	c02388dfbe	Update README.md	2021-06-07 15:12:03 -07:00
Earle F. Philhower, III	56dae62b8e	Add back Featherwing CI test (#195 )	2021-06-07 13:54:25 -07:00
Earle F. Philhower, III	53b52a975a	Update README.md	2021-06-07 07:10:41 -07:00
Earle F. Philhower, III	f87ccacdb1	Upgrade to GCC 10.3. Fix OpenOCD packaging (#194 ) GCC 10.2 has a bug which causes Windows to rebuild every library on every compile, instead of caching the first results. Upgrade to GCC 10.3 which has this fixed. Add proper OpenOCD executables for non-Linux x86_64 archs.	2021-06-06 22:43:26 -07:00
Limor "Ladyada" Friedandhathach	d2a2fcb89d	Add a new board - the Adafruit Macropad w/RP2040 (#191 ) * add two variant files * add trinkey and stemma friend * add fast SPI transfer using pico-sdk blocks * update makeboards.py for new variants - STEMMA Friend RP2040 - Trinkey RP2040 QT * run astyle on SPI library * fix auto -> ssize type * astyled * woops ssizet != sizet! * a nice day for a new board definition! this is a macropad with 12 keys, oled and rotary encoder Co-authored-by: hathach <thach@tinyusb.org>	2021-06-06 12:53:06 -07:00