Check in Arduino API directory to avoid symlink (#176)

Fixes #171

Under Windows, it is very hard to make a symlink and by default git won't
make one to the Arduino API directory, causing annoying build errors.

Avoid the issue by duplicating the ArduinoAPI directory explicitly and using
CI to verify that there are no differences between the two.

.github/workflows/pull-request.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Run codespell
       uses: codespell-project/actions-codespell@master
       with:
-        skip: ./pico-extras,./ArduinoCore-API,./libraries/SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst
+        skip: ./pico-extras,./ArduinoCore-API,./libraries/SdFat,./libraries/Adafruit_TinyUSB_Arduino,./libraries/LittleFS/lib,./tools/pyserial,./pico-sdk,./.github,./docs/i2s.rst,./cores/rp2040/api
         ignore_words_list: ser,DOUT
 
 # Consistent style
@@ -44,6 +44,10 @@ jobs:
         ./tests/restyle.sh
         # If anything changed, GIT should return an error and fail the test
         git diff --exit-code
+    - name: Check Arduino API copy is clean
+      run: |
+        git submodule update --init ./ArduinoCore-API
+        diff -r ./cores/rp2040/api ./ArduinoCore-API/api
 
 # Build all examples on linux (core and Arduino IDE)
   build-linux:

.gitignore

-
 .DS_Store
 system
 tools/dist
-cores/rp2040/api

cores/rp2040/api

-../../ArduinoCore-API/api/
\ No newline at end of file

cores/rp2040/api/ArduinoAPI.h

+/*
+  Arduino API main include
+  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 ARDUINO_API_H
+#define ARDUINO_API_H
+
+// version 1.2.0
+#define ARDUINO_API_VERSION 10200
+
+#include "Binary.h"
+
+#ifdef __cplusplus
+#include "Interrupts.h"
+#include "IPAddress.h"
+#include "Print.h"
+#include "Printable.h"
+#include "PluggableUSB.h"
+#include "Server.h"
+#include "String.h"
+#include "Stream.h"
+#include "Udp.h"
+#include "USBAPI.h"
+#include "WCharacter.h"
+#endif
+
+/* Standard C library includes */
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <math.h>
+
+// Misc Arduino core functions
+#include "Common.h"
+
+#ifdef __cplusplus
+// Compatibility layer for older code
+#include "Compat.h"
+#endif
+
+#endif

cores/rp2040/api/Client.h

+/*
+  Client.h - Base class that provides Client
+  Copyright (c) 2011 Adrian McEwen.  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
+*/
+
+#pragma once
+
+#include "Stream.h"
+#include "IPAddress.h"
+
+namespace arduino {
+
+class Client : public Stream {
+
+public:
+  virtual int connect(IPAddress ip, uint16_t port) =0;
+  virtual int connect(const char *host, uint16_t port) =0;
+  virtual size_t write(uint8_t) =0;
+  virtual size_t write(const uint8_t *buf, size_t size) =0;
+  virtual int available() = 0;
+  virtual int read() = 0;
+  virtual int read(uint8_t *buf, size_t size) = 0;
+  virtual int peek() = 0;
+  virtual void flush() = 0;
+  virtual void stop() = 0;
+  virtual uint8_t connected() = 0;
+  virtual operator bool() = 0;
+protected:
+  uint8_t* rawIPAddress(IPAddress& addr) { return addr.raw_address(); };
+};
+
+}
\ No newline at end of file

cores/rp2040/api/Common.cpp

+#include "Common.h"
+
+/* C++ prototypes */
+long map(long x, long in_min, long in_max, long out_min, long out_max)
+{
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+uint16_t makeWord(uint16_t w) { return w; }
+uint16_t makeWord(uint8_t h, uint8_t l) { return (h << 8) | l; }
\ No newline at end of file

cores/rp2040/api/Common.h

+#pragma once
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+
+void yield(void);
+
+typedef enum {
+  LOW     = 0,
+  HIGH    = 1,
+  CHANGE  = 2,
+  FALLING = 3,
+  RISING  = 4,
+} PinStatus;
+
+typedef enum {
+  INPUT           = 0x0,
+  OUTPUT          = 0x1,
+  INPUT_PULLUP    = 0x2,
+  INPUT_PULLDOWN  = 0x3,
+} PinMode;
+
+typedef enum {
+  LSBFIRST = 0,
+  MSBFIRST = 1,
+} BitOrder;
+
+#define PI          3.1415926535897932384626433832795
+#define HALF_PI     1.5707963267948966192313216916398
+#define TWO_PI      6.283185307179586476925286766559
+#define DEG_TO_RAD  0.017453292519943295769236907684886
+#define RAD_TO_DEG  57.295779513082320876798154814105
+#define EULER       2.718281828459045235360287471352
+
+#define SERIAL      0x0
+#define DISPLAY     0x1
+
+#ifndef constrain
+#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+#endif
+
+#ifndef radians
+#define radians(deg) ((deg)*DEG_TO_RAD)
+#endif
+
+#ifndef degrees
+#define degrees(rad) ((rad)*RAD_TO_DEG)
+#endif
+
+#ifndef sq
+#define sq(x) ((x)*(x))
+#endif
+
+typedef void (*voidFuncPtr)(void);
+typedef void (*voidFuncPtrParam)(void*);
+
+// interrupts() / noInterrupts() must be defined by the core
+
+#define lowByte(w) ((uint8_t) ((w) & 0xff))
+#define highByte(w) ((uint8_t) ((w) >> 8))
+
+#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
+#define bitSet(value, bit) ((value) |= (1UL << (bit)))
+#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
+#define bitToggle(value, bit) ((value) ^= (1UL << (bit)))
+#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit))
+
+#ifndef bit
+#define bit(b) (1UL << (b))
+#endif
+
+/* TODO: request for removal */
+typedef bool      boolean;
+typedef uint8_t   byte;
+typedef uint16_t  word;
+
+void init(void);
+void initVariant(void);
+
+#ifndef HOST
+int atexit(void (*func)()) __attribute__((weak));
+#endif
+int main() __attribute__((weak));
+
+#ifdef EXTENDED_PIN_MODE
+// Platforms who wnat to declare more than 256 pins need to define EXTENDED_PIN_MODE globally
+typedef uint32_t pin_size_t;
+#else
+typedef uint8_t pin_size_t;
+#endif
+
+void pinMode(pin_size_t pinNumber, PinMode pinMode);
+void digitalWrite(pin_size_t pinNumber, PinStatus status);
+PinStatus digitalRead(pin_size_t pinNumber);
+int analogRead(pin_size_t pinNumber);
+void analogReference(uint8_t mode);
+void analogWrite(pin_size_t pinNumber, int value);
+
+unsigned long millis(void);
+unsigned long micros(void);
+void delay(unsigned long);
+void delayMicroseconds(unsigned int us);
+unsigned long pulseIn(pin_size_t pin, uint8_t state, unsigned long timeout);
+unsigned long pulseInLong(pin_size_t pin, uint8_t state, unsigned long timeout);
+
+void shiftOut(pin_size_t dataPin, pin_size_t clockPin, BitOrder bitOrder, uint8_t val);
+uint8_t shiftIn(pin_size_t dataPin, pin_size_t clockPin, BitOrder bitOrder);
+
+void attachInterrupt(pin_size_t interruptNumber, voidFuncPtr callback, PinStatus mode);
+void attachInterruptParam(pin_size_t interruptNumber, voidFuncPtrParam callback, PinStatus mode, void* param);
+void detachInterrupt(pin_size_t interruptNumber);
+
+void setup(void);
+void loop(void);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#ifdef __cplusplus
+  template<class T, class L> 
+  auto min(const T& a, const L& b) -> decltype((b < a) ? b : a)
+  {
+    return (b < a) ? b : a;
+  }
+
+  template<class T, class L> 
+  auto max(const T& a, const L& b) -> decltype((b < a) ? b : a)
+  {
+    return (a < b) ? b : a;
+  }
+#else
+#ifndef min
+#define min(a,b) \
+   ({ __typeof__ (a) _a = (a); \
+       __typeof__ (b) _b = (b); \
+     _a < _b ? _a : _b; })
+#endif
+#ifndef max
+#define max(a,b) \
+   ({ __typeof__ (a) _a = (a); \
+       __typeof__ (b) _b = (b); \
+     _a > _b ? _a : _b; })
+#endif
+#endif
+
+#ifdef __cplusplus
+
+/* C++ prototypes */
+uint16_t makeWord(uint16_t w);
+uint16_t makeWord(byte h, byte l);
+
+#define word(...) makeWord(__VA_ARGS__)
+
+unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
+unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
+
+void tone(uint8_t _pin, unsigned int frequency, unsigned long duration = 0);
+void noTone(uint8_t _pin);
+
+// WMath prototypes
+long random(long);
+long random(long, long);
+void randomSeed(unsigned long);
+long map(long, long, long, long, long);
+
+#endif // __cplusplus

cores/rp2040/api/Compat.h

+#ifndef __COMPAT_H__
+#define __COMPAT_H__
+
+namespace arduino {
+
+inline void pinMode(pin_size_t pinNumber, int mode) {
+	pinMode(pinNumber, (PinMode)mode);
+};
+
+inline void digitalWrite(pin_size_t pinNumber, int status) {
+	digitalWrite(pinNumber, (PinStatus)status);
+};
+
+}
+
+#endif
\ No newline at end of file

cores/rp2040/api/HardwareI2C.h

+/*
+  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
+*/
+
+#pragma once
+
+#include <inttypes.h>
+#include "Stream.h"
+
+namespace arduino {
+
+class HardwareI2C : public Stream
+{
+  public:
+    virtual void begin() = 0;
+    virtual void begin(uint8_t address) = 0;
+    virtual void end() = 0;
+
+    virtual void setClock(uint32_t freq) = 0;
+  
+    virtual void beginTransmission(uint8_t address) = 0;
+    virtual uint8_t endTransmission(bool stopBit) = 0;
+    virtual uint8_t endTransmission(void) = 0;
+
+    virtual size_t requestFrom(uint8_t address, size_t len, bool stopBit) = 0;
+    virtual size_t requestFrom(uint8_t address, size_t len) = 0;
+
+    virtual void onReceive(void(*)(int)) = 0;
+    virtual void onRequest(void(*)(void)) = 0;
+};
+
+}
+

cores/rp2040/api/HardwareSPI.h

+/*
+  Copyright (c) 2018 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
+*/
+
+#pragma once
+
+#include "Common.h"
+#include <inttypes.h>
+#include "Stream.h"
+
+#define SPI_HAS_TRANSACTION
+
+namespace arduino {
+
+typedef enum {
+  SPI_MODE0 = 0,
+  SPI_MODE1 = 1,
+  SPI_MODE2 = 2,
+  SPI_MODE3 = 3,
+} SPIMode;
+
+
+class SPISettings {
+  public:
+  SPISettings(uint32_t clock, BitOrder bitOrder, SPIMode dataMode) {
+    if (__builtin_constant_p(clock)) {
+      init_AlwaysInline(clock, bitOrder, dataMode);
+    } else {
+      init_MightInline(clock, bitOrder, dataMode);
+    }
+  }
+
+  SPISettings(uint32_t clock, BitOrder bitOrder, int dataMode) {
+    if (__builtin_constant_p(clock)) {
+      init_AlwaysInline(clock, bitOrder, (SPIMode)dataMode);
+    } else {
+      init_MightInline(clock, bitOrder, (SPIMode)dataMode);
+    }
+  }
+
+  // Default speed set to 4MHz, SPI mode set to MODE 0 and Bit order set to MSB first.
+  SPISettings() { init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0); }
+
+  bool operator==(const SPISettings& rhs) const
+  {
+    if ((this->clockFreq == rhs.clockFreq) &&
+        (this->bitOrder == rhs.bitOrder) &&
+        (this->dataMode == rhs.dataMode)) {
+      return true;
+    }
+    return false;
+  }
+
+  bool operator!=(const SPISettings& rhs) const
+  {
+    return !(*this == rhs);
+  }
+
+  uint32_t getClockFreq() const {
+    return clockFreq;
+  }
+  SPIMode getDataMode() const {
+    return dataMode;
+  }
+  BitOrder getBitOrder() const {
+    return (bitOrder);
+  }
+
+  private:
+  void init_MightInline(uint32_t clock, BitOrder bitOrder, SPIMode dataMode) {
+    init_AlwaysInline(clock, bitOrder, dataMode);
+  }
+
+  // Core developer MUST use an helper function in beginTransaction() to use this data
+  void init_AlwaysInline(uint32_t clock, BitOrder bitOrder, SPIMode dataMode) __attribute__((__always_inline__)) {
+    this->clockFreq = clock;
+    this->dataMode = dataMode;
+    this->bitOrder = bitOrder;
+  }
+
+  uint32_t clockFreq;
+  SPIMode dataMode;
+  BitOrder bitOrder;
+
+  friend class HardwareSPI;
+};
+
+const SPISettings DEFAULT_SPI_SETTINGS = SPISettings();
+
+class HardwareSPI
+{
+  public:
+    virtual ~HardwareSPI() { }
+
+    virtual uint8_t transfer(uint8_t data) = 0;
+    virtual uint16_t transfer16(uint16_t data) = 0;
+    virtual void transfer(void *buf, size_t count) = 0;
+
+    // Transaction Functions
+    virtual void usingInterrupt(int interruptNumber) = 0;
+    virtual void notUsingInterrupt(int interruptNumber) = 0;
+    virtual void beginTransaction(SPISettings settings) = 0;
+    virtual void endTransaction(void) = 0;
+
+    // SPI Configuration methods
+    virtual void attachInterrupt() = 0;
+    virtual void detachInterrupt() = 0;
+
+    virtual void begin() = 0;
+    virtual void end() = 0;
+};
+
+// Alias SPIClass to HardwareSPI since it's already the defacto standard for SPI classe name
+typedef HardwareSPI SPIClass;
+
+}

cores/rp2040/api/HardwareSerial.h

+/*
+  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
+*/
+
+#pragma once
+
+#include <inttypes.h>
+#include "Stream.h"
+
+namespace arduino {
+
+// XXX: Those constants should be defined as const int / enums?
+// XXX: shall we use namespaces too?
+#define SERIAL_PARITY_EVEN   (0x1ul)
+#define SERIAL_PARITY_ODD    (0x2ul)
+#define SERIAL_PARITY_NONE   (0x3ul)
+#define SERIAL_PARITY_MARK   (0x4ul)
+#define SERIAL_PARITY_SPACE  (0x5ul)
+#define SERIAL_PARITY_MASK   (0xFul)
+
+#define SERIAL_STOP_BIT_1    (0x10ul)
+#define SERIAL_STOP_BIT_1_5  (0x20ul)
+#define SERIAL_STOP_BIT_2    (0x30ul)
+#define SERIAL_STOP_BIT_MASK (0xF0ul)
+
+#define SERIAL_DATA_5        (0x100ul)
+#define SERIAL_DATA_6        (0x200ul)
+#define SERIAL_DATA_7        (0x300ul)
+#define SERIAL_DATA_8        (0x400ul)
+#define SERIAL_DATA_MASK     (0xF00ul)
+
+#define SERIAL_5N1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_NONE  | SERIAL_DATA_5)
+#define SERIAL_6N1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_NONE  | SERIAL_DATA_6)
+#define SERIAL_7N1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_NONE  | SERIAL_DATA_7)
+#define SERIAL_8N1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_NONE  | SERIAL_DATA_8)
+#define SERIAL_5N2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_NONE  | SERIAL_DATA_5)
+#define SERIAL_6N2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_NONE  | SERIAL_DATA_6)
+#define SERIAL_7N2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_NONE  | SERIAL_DATA_7)
+#define SERIAL_8N2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_NONE  | SERIAL_DATA_8)
+#define SERIAL_5E1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_EVEN  | SERIAL_DATA_5)
+#define SERIAL_6E1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_EVEN  | SERIAL_DATA_6)
+#define SERIAL_7E1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_EVEN  | SERIAL_DATA_7)
+#define SERIAL_8E1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_EVEN  | SERIAL_DATA_8)
+#define SERIAL_5E2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_EVEN  | SERIAL_DATA_5)
+#define SERIAL_6E2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_EVEN  | SERIAL_DATA_6)
+#define SERIAL_7E2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_EVEN  | SERIAL_DATA_7)
+#define SERIAL_8E2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_EVEN  | SERIAL_DATA_8)
+#define SERIAL_5O1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_ODD   | SERIAL_DATA_5)
+#define SERIAL_6O1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_ODD   | SERIAL_DATA_6)
+#define SERIAL_7O1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_ODD   | SERIAL_DATA_7)
+#define SERIAL_8O1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_ODD   | SERIAL_DATA_8)
+#define SERIAL_5O2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_ODD   | SERIAL_DATA_5)
+#define SERIAL_6O2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_ODD   | SERIAL_DATA_6)
+#define SERIAL_7O2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_ODD   | SERIAL_DATA_7)
+#define SERIAL_8O2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_ODD   | SERIAL_DATA_8)
+#define SERIAL_5M1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_MARK  | SERIAL_DATA_5)
+#define SERIAL_6M1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_MARK  | SERIAL_DATA_6)
+#define SERIAL_7M1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_MARK  | SERIAL_DATA_7)
+#define SERIAL_8M1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_MARK  | SERIAL_DATA_8)
+#define SERIAL_5M2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_MARK  | SERIAL_DATA_5)
+#define SERIAL_6M2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_MARK  | SERIAL_DATA_6)
+#define SERIAL_7M2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_MARK  | SERIAL_DATA_7)
+#define SERIAL_8M2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_MARK  | SERIAL_DATA_8)
+#define SERIAL_5S1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_SPACE | SERIAL_DATA_5)
+#define SERIAL_6S1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_SPACE | SERIAL_DATA_6)
+#define SERIAL_7S1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_SPACE | SERIAL_DATA_7)
+#define SERIAL_8S1           (SERIAL_STOP_BIT_1 | SERIAL_PARITY_SPACE | SERIAL_DATA_8)
+#define SERIAL_5S2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_SPACE | SERIAL_DATA_5)
+#define SERIAL_6S2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_SPACE | SERIAL_DATA_6)
+#define SERIAL_7S2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_SPACE | SERIAL_DATA_7)
+#define SERIAL_8S2           (SERIAL_STOP_BIT_2 | SERIAL_PARITY_SPACE | SERIAL_DATA_8)
+
+class HardwareSerial : public Stream
+{
+  public:
+    virtual void begin(unsigned long) = 0;
+    virtual void begin(unsigned long baudrate, uint16_t config) = 0;
+    virtual void end() = 0;
+    virtual int available(void) = 0;
+    virtual int peek(void) = 0;
+    virtual int read(void) = 0;
+    virtual void flush(void) = 0;
+    virtual size_t write(uint8_t) = 0;
+    using Print::write; // pull in write(str) and write(buf, size) from Print
+    virtual operator bool() = 0;
+};
+
+// XXX: Are we keeping the serialEvent API?
+extern void serialEventRun(void) __attribute__((weak));
+
+}
\ No newline at end of file

cores/rp2040/api/IPAddress.cpp

+/*
+  IPAddress.cpp - Base class that provides IPAddress
+  Copyright (c) 2011 Adrian McEwen.  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 "IPAddress.h"
+#include "Print.h"
+
+using namespace arduino;
+
+IPAddress::IPAddress()
+{
+    _address.dword = 0;
+}
+
+IPAddress::IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet)
+{
+    _address.bytes[0] = first_octet;
+    _address.bytes[1] = second_octet;
+    _address.bytes[2] = third_octet;
+    _address.bytes[3] = fourth_octet;
+}
+
+IPAddress::IPAddress(uint32_t address)
+{
+    _address.dword = address;
+}
+
+IPAddress::IPAddress(const uint8_t *address)
+{
+    memcpy(_address.bytes, address, sizeof(_address.bytes));
+}
+
+bool IPAddress::fromString(const char *address)
+{
+    // TODO: add support for "a", "a.b", "a.b.c" formats
+
+    int16_t acc = -1; // Accumulator
+    uint8_t dots = 0;
+
+    while (*address)
+    {
+        char c = *address++;
+        if (c >= '0' && c <= '9')
+        {
+            acc = (acc < 0) ? (c - '0') : acc * 10 + (c - '0');
+            if (acc > 255) {
+                // Value out of [0..255] range
+                return false;
+            }
+        }
+        else if (c == '.')
+        {
+            if (dots == 3) {
+                // Too much dots (there must be 3 dots)
+                return false;
+            }
+            if (acc < 0) {
+                /* No value between dots, e.g. '1..' */
+                return false;
+            }
+            _address.bytes[dots++] = acc;
+            acc = -1;
+        }
+        else
+        {
+            // Invalid char
+            return false;
+        }
+    }
+
+    if (dots != 3) {
+        // Too few dots (there must be 3 dots)
+        return false;
+    }
+    if (acc < 0) {
+        /* No value between dots, e.g. '1..' */
+        return false;
+    }
+    _address.bytes[3] = acc;
+    return true;
+}
+
+IPAddress& IPAddress::operator=(const uint8_t *address)
+{
+    memcpy(_address.bytes, address, sizeof(_address.bytes));
+    return *this;
+}
+
+IPAddress& IPAddress::operator=(uint32_t address)
+{
+    _address.dword = address;
+    return *this;
+}
+
+bool IPAddress::operator==(const uint8_t* addr) const
+{
+    return memcmp(addr, _address.bytes, sizeof(_address.bytes)) == 0;
+}
+
+size_t IPAddress::printTo(Print& p) const
+{
+    size_t n = 0;
+    for (int i =0; i < 3; i++)
+    {
+        n += p.print(_address.bytes[i], DEC);
+        n += p.print('.');
+    }
+    n += p.print(_address.bytes[3], DEC);
+    return n;
+}
+
+const IPAddress arduino::INADDR_NONE(0,0,0,0);

cores/rp2040/api/IPAddress.h

+/*
+  IPAddress.h - Base class that provides IPAddress
+  Copyright (c) 2011 Adrian McEwen.  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
+*/
+
+#pragma once
+
+#include <stdint.h>
+#include "Printable.h"
+#include "String.h"
+
+// forward declartions of global name space friend classes
+class EthernetClass;
+class DhcpClass;
+class DNSClient;
+
+namespace arduino {
+
+// A class to make it easier to handle and pass around IP addresses
+
+class IPAddress : public Printable {
+private:
+    union {
+	uint8_t bytes[4];  // IPv4 address
+	uint32_t dword;
+    } _address;
+
+    // Access the raw byte array containing the address.  Because this returns a pointer
+    // to the internal structure rather than a copy of the address this function should only
+    // be used when you know that the usage of the returned uint8_t* will be transient and not
+    // stored.
+    uint8_t* raw_address() { return _address.bytes; };
+
+public:
+    // Constructors
+    IPAddress();
+    IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet);
+    IPAddress(uint32_t address);
+    IPAddress(const uint8_t *address);
+
+    bool fromString(const char *address);
+    bool fromString(const String &address) { return fromString(address.c_str()); }
+
+    // Overloaded cast operator to allow IPAddress objects to be used where a pointer
+    // to a four-byte uint8_t array is expected
+    operator uint32_t() const { return _address.dword; };
+    bool operator==(const IPAddress& addr) const { return _address.dword == addr._address.dword; };
+    bool operator!=(const IPAddress& addr) const { return _address.dword != addr._address.dword; };
+    bool operator==(const uint8_t* addr) const;
+
+    // Overloaded index operator to allow getting and setting individual octets of the address
+    uint8_t operator[](int index) const { return _address.bytes[index]; };
+    uint8_t& operator[](int index) { return _address.bytes[index]; };
+
+    // Overloaded copy operators to allow initialisation of IPAddress objects from other types
+    IPAddress& operator=(const uint8_t *address);
+    IPAddress& operator=(uint32_t address);
+
+    virtual size_t printTo(Print& p) const;
+
+    friend class UDP;
+    friend class Client;
+    friend class Server;
+    
+    friend ::EthernetClass;
+    friend ::DhcpClass;
+    friend ::DNSClient;
+};
+
+extern const IPAddress INADDR_NONE;
+}

cores/rp2040/api/Interrupts.h

+#ifndef W_INTERRUPTS_CPP
+#define W_INTERRUPTS_CPP
+#ifdef __cplusplus
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include "Common.h"
+
+namespace arduino {
+
+template <typename T>
+using voidTemplateFuncPtrParam =  void (*)(T param);
+
+template<typename T> struct __container__ {
+  void* param;
+  voidTemplateFuncPtrParam<T> function;
+};
+
+// C++ only overloaded version of attachInterrupt function
+template<typename T> void attachInterrupt(pin_size_t interruptNum, voidTemplateFuncPtrParam<T> userFunc, PinStatus mode, T& param) {
+
+  struct __container__<T> *cont = new __container__<T>();
+  cont->param = &param;
+  cont->function = userFunc;
+
+  // TODO: check lambda scope
+  // TODO: add structure to delete(__container__) when detachInterrupt() is called
+  auto f = [](void* a) -> void
+  {
+    T param = *(T*)((struct __container__<T>*)a)->param;
+    (((struct __container__<T>*)a)->function)(param);
+  };
+
+  attachInterruptParam(interruptNum, f, mode, cont);
+}
+
+template<typename T> void attachInterrupt(pin_size_t interruptNum, voidTemplateFuncPtrParam<T*> userFunc, PinStatus mode, T* param) {
+  attachInterruptParam(interruptNum, (voidFuncPtrParam)userFunc, mode, (void*)param);
+}
+
+}
+#endif
+#endif

cores/rp2040/api/PluggableUSB.cpp

+/*
+  PluggableUSB.cpp
+  Copyright (c) 2015 Arduino LLC
+
+  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 "USBAPI.h"
+#include "PluggableUSB.h"
+
+using namespace arduino;
+
+int PluggableUSB_::getInterface(uint8_t* interfaceCount)
+{
+	int sent = 0;
+	PluggableUSBModule* node;
+	for (node = rootNode; node; node = node->next) {
+		int res = node->getInterface(interfaceCount);
+		if (res < 0)
+			return -1;
+		sent += res;
+	}
+	return sent;
+}
+
+int PluggableUSB_::getDescriptor(USBSetup& setup)
+{
+	PluggableUSBModule* node;
+	for (node = rootNode; node; node = node->next) {
+		int ret = node->getDescriptor(setup);
+		// ret!=0 -> request has been processed
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+void PluggableUSB_::getShortName(char *iSerialNum)
+{
+	PluggableUSBModule* node;
+	for (node = rootNode; node; node = node->next) {
+		iSerialNum += node->getShortName(iSerialNum);
+	}
+	*iSerialNum = 0;
+}
+
+bool PluggableUSB_::setup(USBSetup& setup)
+{
+	PluggableUSBModule* node;
+	for (node = rootNode; node; node = node->next) {
+		if (node->setup(setup)) {
+			return true;
+		}
+	}
+	return false;
+}
+
+bool PluggableUSB_::plug(PluggableUSBModule *node)
+{
+	if ((lastEp + node->numEndpoints) > totalEP) {
+		return false;
+	}
+
+	if (!rootNode) {
+		rootNode = node;
+	} else {
+		PluggableUSBModule *current = rootNode;
+		while (current->next) {
+			current = current->next;
+		}
+		current->next = node;
+	}
+
+	node->pluggedInterface = lastIf;
+	node->pluggedEndpoint = lastEp;
+	lastIf += node->numInterfaces;
+	for (uint8_t i = 0; i < node->numEndpoints; i++) {
+		*(unsigned int*)(epBuffer(lastEp)) = node->endpointType[i];
+		lastEp++;
+	}
+	return true;
+	// restart USB layer???
+}
+
+PluggableUSB_& PluggableUSB()
+{
+	static PluggableUSB_ obj;
+	return obj;
+}
\ No newline at end of file

cores/rp2040/api/PluggableUSB.h

+/*
+  PluggableUSB.h
+  Copyright (c) 2015 Arduino LLC
+
+  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 PUSB_h
+#define PUSB_h
+
+#include "USBAPI.h"
+#include <stdint.h>
+#include <stddef.h>
+
+namespace arduino {
+
+class PluggableUSBModule {
+public:
+  PluggableUSBModule(uint8_t numEps, uint8_t numIfs, unsigned int *epType) :
+    numEndpoints(numEps), numInterfaces(numIfs), endpointType(epType)
+  { }
+
+protected:
+  virtual bool setup(USBSetup& setup) = 0;
+  virtual int getInterface(uint8_t* interfaceCount) = 0;
+  virtual int getDescriptor(USBSetup& setup) = 0;
+  virtual uint8_t getShortName(char *name) { name[0] = 'A'+pluggedInterface; return 1; }
+
+  uint8_t pluggedInterface;
+  uint8_t pluggedEndpoint;
+
+  const uint8_t numEndpoints;
+  const uint8_t numInterfaces;
+  const unsigned int *endpointType;
+
+  PluggableUSBModule *next = NULL;
+
+  friend class PluggableUSB_;
+};
+
+class PluggableUSB_ {
+public:
+  PluggableUSB_();
+  bool plug(PluggableUSBModule *node);
+  int getInterface(uint8_t* interfaceCount);
+  int getDescriptor(USBSetup& setup);
+  bool setup(USBSetup& setup);
+  void getShortName(char *iSerialNum);
+
+private:
+  uint8_t lastIf;
+  uint8_t lastEp;
+  PluggableUSBModule* rootNode;
+  uint8_t totalEP;
+};
+}
+
+// core need to define
+void* epBuffer(unsigned int n); // -> returns a pointer to the Nth element of the EP buffer structure
+
+// Replacement for global singleton.
+// This function prevents static-initialization-order-fiasco
+// https://isocpp.org/wiki/faq/ctors#static-init-order-on-first-use
+arduino::PluggableUSB_& PluggableUSB();
+
+#endif
\ No newline at end of file

cores/rp2040/api/Print.cpp

+/*
+  Copyright (c) 2014 Arduino.  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 <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include "Print.h"
+
+using namespace arduino;
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+/* default implementation: may be overridden */
+size_t Print::write(const uint8_t *buffer, size_t size)
+{
+  size_t n = 0;
+  while (size--) {
+    if (write(*buffer++)) n++;
+    else break;
+  }
+  return n;
+}
+
+size_t Print::print(const __FlashStringHelper *ifsh)
+{
+#if defined(__AVR__)
+  PGM_P p = reinterpret_cast<PGM_P>(ifsh);
+  size_t n = 0;
+  while (1) {
+    unsigned char c = pgm_read_byte(p++);
+    if (c == 0) break;
+    if (write(c)) n++;
+    else break;
+  }
+  return n;
+#else
+  return print(reinterpret_cast<const char *>(ifsh));
+#endif
+}
+
+size_t Print::print(const String &s)
+{
+  return write(s.c_str(), s.length());
+}
+
+size_t Print::print(const char str[])
+{
+  return write(str);
+}
+
+size_t Print::print(char c)
+{
+  return write(c);
+}
+
+size_t Print::print(unsigned char b, int base)
+{
+  return print((unsigned long) b, base);
+}
+
+size_t Print::print(int n, int base)
+{
+  return print((long) n, base);
+}
+
+size_t Print::print(unsigned int n, int base)
+{
+  return print((unsigned long) n, base);
+}
+
+size_t Print::print(long n, int base)
+{
+  if (base == 0) {
+    return write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      int t = print('-');
+      n = -n;
+      return printNumber(n, 10) + t;
+    }
+    return printNumber(n, 10);
+  } else {
+    return printNumber(n, base);
+  }
+}
+
+size_t Print::print(unsigned long n, int base)
+{
+  if (base == 0) return write(n);
+  else return printNumber(n, base);
+}
+
+size_t Print::print(long long n, int base)
+{
+  if (base == 0) {
+    return write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      int t = print('-');
+      n = -n;
+      return printULLNumber(n, 10) + t;
+    }
+    return printULLNumber(n, 10);
+  } else {
+    return printULLNumber(n, base);
+  }
+}
+
+size_t Print::print(unsigned long long n, int base)
+{
+  if (base == 0) return write(n);
+  else return printULLNumber(n, base);
+}
+
+size_t Print::print(double n, int digits)
+{
+  return printFloat(n, digits);
+}
+
+size_t Print::println(const __FlashStringHelper *ifsh)
+{
+  size_t n = print(ifsh);
+  n += println();
+  return n;
+}
+
+size_t Print::print(const Printable& x)
+{
+  return x.printTo(*this);
+}
+
+size_t Print::println(void)
+{
+  return write("\r\n");
+}
+
+size_t Print::println(const String &s)
+{
+  size_t n = print(s);
+  n += println();
+  return n;
+}
+
+size_t Print::println(const char c[])
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t Print::println(char c)
+{
+  size_t n = print(c);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned char b, int base)
+{
+  size_t n = print(b, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned int num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(long long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(unsigned long long num, int base)
+{
+  size_t n = print(num, base);
+  n += println();
+  return n;
+}
+
+size_t Print::println(double num, int digits)
+{
+  size_t n = print(num, digits);
+  n += println();
+  return n;
+}
+
+size_t Print::println(const Printable& x)
+{
+  size_t n = print(x);
+  n += println();
+  return n;
+}
+
+size_t Print::printf(const char *format, ...) {
+    va_list arg;
+    va_start(arg, format);
+    char temp[64];
+    char* buffer = temp;
+    size_t len = vsnprintf(temp, sizeof(temp), format, arg);
+    va_end(arg);
+    if (len > sizeof(temp) - 1) {
+        buffer = new char[len + 1];
+        if (!buffer) {
+            return 0;
+        }
+        va_start(arg, format);
+        vsnprintf(buffer, len + 1, format, arg);
+        va_end(arg);
+    }
+    len = write((const uint8_t*) buffer, len);
+    if (buffer != temp) {
+        delete[] buffer;
+    }
+    return len;
+}
+
+// TODO - must be better way than cut-n-paste!
+size_t Print::printf_P(const char *format, ...) {
+    va_list arg;
+    va_start(arg, format);
+    char temp[64];
+    char* buffer = temp;
+    size_t len = vsnprintf(temp, sizeof(temp), format, arg);
+    va_end(arg);
+    if (len > sizeof(temp) - 1) {
+        buffer = new char[len + 1];
+        if (!buffer) {
+            return 0;
+        }
+        va_start(arg, format);
+        vsnprintf(buffer, len + 1, format, arg);
+        va_end(arg);
+    }
+    len = write((const uint8_t*) buffer, len);
+    if (buffer != temp) {
+        delete[] buffer;
+    }
+    return len;
+}
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+size_t Print::printNumber(unsigned long n, uint8_t base)
+{
+  char buf[8 * sizeof(long) + 1]; // Assumes 8-bit chars plus zero byte.
+  char *str = &buf[sizeof(buf) - 1];
+
+  *str = '\0';
+
+  // prevent crash if called with base == 1
+  if (base < 2) base = 10;
+
+  do {
+    char c = n % base;
+    n /= base;
+
+    *--str = c < 10 ? c + '0' : c + 'A' - 10;
+  } while(n);
+
+  return write(str);
+}
+
+// REFERENCE IMPLEMENTATION FOR ULL
+// size_t Print::printULLNumber(unsigned long long n, uint8_t base)
+// {
+  // // if limited to base 10 and 16 the bufsize can be smaller
+  // char buf[65];
+  // char *str = &buf[64];
+
+  // *str = '\0';
+
+  // // prevent crash if called with base == 1
+  // if (base < 2) base = 10;
+
+    // do {
+      // unsigned long long t = n / base;
+      // char c = n - t * base;  // faster than c = n%base;
+      // n = t;
+      // *--str = c < 10 ? c + '0' : c + 'A' - 10;
+  // } while(n);
+
+  // return write(str);
+// }
+
+// FAST IMPLEMENTATION FOR ULL
+size_t Print::printULLNumber(unsigned long long n64, uint8_t base)
+{
+  // if limited to base 10 and 16 the bufsize can be 20
+  char buf[64];
+  uint8_t i = 0;
+  uint8_t innerLoops = 0;
+
+  // prevent crash if called with base == 1
+  if (base < 2) base = 10;
+
+  // process chunks that fit in "16 bit math".
+  uint16_t top = 0xFFFF / base;
+  uint16_t th16 = 1;
+  while (th16 < top)
+  {
+    th16 *= base;
+    innerLoops++;
+  }
+
+  while (n64 > th16)
+  {
+    // 64 bit math part
+    uint64_t q = n64 / th16;
+    uint16_t r = n64 - q*th16;
+    n64 = q;
+
+    // 16 bit math loop to do remainder. (note buffer is filled reverse)
+    for (uint8_t j=0; j < innerLoops; j++)
+    {
+      uint16_t qq = r/base;
+      buf[i++] = r - qq*base;
+      r = qq;
+    }
+  }
+
+  uint16_t n16 = n64;
+  while (n16 > 0)
+  {
+    uint16_t qq = n16/base;
+    buf[i++] = n16 - qq*base;
+    n16 = qq;
+  }
+
+  size_t bytes = i;
+  for (; i > 0; i--)
+    write((char) (buf[i - 1] < 10 ?
+    '0' + buf[i - 1] :
+    'A' + buf[i - 1] - 10));
+
+  return bytes;
+}
+
+size_t Print::printFloat(double number, int digits)
+{
+  if (digits < 0)
+    digits = 2;
+
+  size_t n = 0;
+
+  if (isnan(number)) return print("nan");
+  if (isinf(number)) return print("inf");
+  if (number > 4294967040.0) return print ("ovf");  // constant determined empirically
+  if (number <-4294967040.0) return print ("ovf");  // constant determined empirically
+
+  // Handle negative numbers
+  if (number < 0.0)
+  {
+     n += print('-');
+     number = -number;
+  }
+
+  // Round correctly so that print(1.999, 2) prints as "2.00"
+  double rounding = 0.5;
+  for (uint8_t i=0; i<digits; ++i)
+    rounding /= 10.0;
+
+  number += rounding;
+
+  // Extract the integer part of the number and print it
+  unsigned long int_part = (unsigned long)number;
+  double remainder = number - (double)int_part;
+  n += print(int_part);
+
+  // Print the decimal point, but only if there are digits beyond
+  if (digits > 0) {
+    n += print(".");
+  }
+
+  // Extract digits from the remainder one at a time
+  while (digits-- > 0)
+  {
+    remainder *= 10.0;
+    unsigned int toPrint = (unsigned int)remainder;
+    n += print(toPrint);
+    remainder -= toPrint;
+  }
+
+  return n;
+}

cores/rp2040/api/Print.h

+/*
+  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
+*/
+
+#pragma once
+
+#include <inttypes.h>
+#include <stdio.h> // for size_t
+
+#include "String.h"
+#include "Printable.h"
+
+#define DEC 10
+#define HEX 16
+#define OCT 8
+#define BIN 2
+
+namespace arduino {
+
+class Print
+{
+  private:
+    int write_error;
+    size_t printNumber(unsigned long, uint8_t);
+    size_t printULLNumber(unsigned long long, uint8_t);
+    size_t printFloat(double, int);
+  protected:
+    void setWriteError(int err = 1) { write_error = err; }
+  public:
+    Print() : write_error(0) {}
+
+    int getWriteError() { return write_error; }
+    void clearWriteError() { setWriteError(0); }
+
+    virtual size_t write(uint8_t) = 0;
+    size_t write(const char *str) {
+      if (str == NULL) return 0;
+      return write((const uint8_t *)str, strlen(str));
+    }
+    virtual size_t write(const uint8_t *buffer, size_t size);
+    size_t write(const char *buffer, size_t size) {
+      return write((const uint8_t *)buffer, size);
+    }
+
+    // default to zero, meaning "a single write may block"
+    // should be overriden by subclasses with buffering
+    virtual int availableForWrite() { return 0; }
+
+    size_t print(const __FlashStringHelper *);
+    size_t print(const String &);
+    size_t print(const char[]);
+    size_t print(char);
+    size_t print(unsigned char, int = DEC);
+    size_t print(int, int = DEC);
+    size_t print(unsigned int, int = DEC);
+    size_t print(long, int = DEC);
+    size_t print(unsigned long, int = DEC);
+    size_t print(long long, int = DEC);
+    size_t print(unsigned long long, int = DEC);
+    size_t print(double, int = 2);
+    size_t print(const Printable&);
+
+    size_t println(const __FlashStringHelper *);
+    size_t println(const String &s);
+    size_t println(const char[]);
+    size_t println(char);
+    size_t println(unsigned char, int = DEC);
+    size_t println(int, int = DEC);
+    size_t println(unsigned int, int = DEC);
+    size_t println(long, int = DEC);
+    size_t println(unsigned long, int = DEC);
+    size_t println(long long, int = DEC);
+    size_t println(unsigned long long, int = DEC);
+    size_t println(double, int = 2);
+    size_t println(const Printable&);
+    size_t println(void);
+
+    // EFP3 - Add printf() to make life so much easier...
+    size_t printf(const char *format, ...);
+    size_t printf_P(const char *format, ...);
+
+    virtual void flush() { /* Empty implementation for backward compatibility */ }
+};
+
+}
+using namespace arduino;

cores/rp2040/api/Printable.h

+/*
+  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
+*/
+
+#pragma once
+
+#include <stdlib.h>
+
+namespace arduino {
+
+class Print;
+
+/** The Printable class provides a way for new classes to allow themselves to be printed.
+    By deriving from Printable and implementing the printTo method, it will then be possible
+    for users to print out instances of this class by passing them into the usual
+    Print::print and Print::println methods.
+*/
+
+class Printable
+{
+  public:
+    virtual size_t printTo(Print& p) const = 0;
+};
+
+}
\ No newline at end of file

cores/rp2040/api/RingBuffer.h

+/*
+  Copyright (c) 2014 Arduino.  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
+*/
+
+#ifdef __cplusplus
+
+#ifndef _RING_BUFFER_
+#define _RING_BUFFER_
+
+#include <stdint.h>
+#include <string.h>
+
+namespace arduino {
+
+// Define constants and variables for buffering incoming serial data.  We're
+// using a ring buffer (I think), in which head is the index of the location
+// to which to write the next incoming character and tail is the index of the
+// location from which to read.
+#define SERIAL_BUFFER_SIZE 64
+
+template <int N>
+class RingBufferN
+{
+  public:
+    uint8_t _aucBuffer[N] ;
+    volatile int _iHead ;
+    volatile int _iTail ;
+    volatile int _numElems;
+
+  public:
+    RingBufferN( void ) ;
+    void store_char( uint8_t c ) ;
+    void clear();
+    int read_char();
+    int available();
+    int availableForStore();
+    int peek();
+    bool isFull();
+
+  private:
+    int nextIndex(int index);
+    inline bool isEmpty() const { return (_numElems == 0); }
+};
+
+typedef RingBufferN<SERIAL_BUFFER_SIZE> RingBuffer;
+
+
+template <int N>
+RingBufferN<N>::RingBufferN( void )
+{
+    memset( _aucBuffer, 0, N ) ;
+    clear();
+}
+
+template <int N>
+void RingBufferN<N>::store_char( uint8_t c )
+{
+  // if we should be storing the received character into the location
+  // just before the tail (meaning that the head would advance to the
+  // current location of the tail), we're about to overflow the buffer
+  // and so we don't write the character or advance the head.
+  if (!isFull())
+  {
+    _aucBuffer[_iHead] = c ;
+    _iHead = nextIndex(_iHead);
+    _numElems++;
+  }
+}
+
+template <int N>
+void RingBufferN<N>::clear()
+{
+  _iHead = 0;
+  _iTail = 0;
+  _numElems = 0;
+}
+
+template <int N>
+int RingBufferN<N>::read_char()
+{
+  if (isEmpty())
+    return -1;
+
+  uint8_t value = _aucBuffer[_iTail];
+  _iTail = nextIndex(_iTail);
+  _numElems--;
+
+  return value;
+}
+
+template <int N>
+int RingBufferN<N>::available()
+{
+  return _numElems;
+}
+
+template <int N>
+int RingBufferN<N>::availableForStore()
+{
+  return (N - _numElems);
+}
+
+template <int N>
+int RingBufferN<N>::peek()
+{
+  if (isEmpty())
+    return -1;
+
+  return _aucBuffer[_iTail];
+}
+
+template <int N>
+int RingBufferN<N>::nextIndex(int index)
+{
+  return (uint32_t)(index + 1) % N;
+}
+
+template <int N>
+bool RingBufferN<N>::isFull()
+{
+  return (_numElems == N);
+}
+
+}
+
+#endif /* _RING_BUFFER_ */
+#endif /* __cplusplus */
\ No newline at end of file

cores/rp2040/api/Server.h

+/*
+  Server.h - Base class that provides Server
+  Copyright (c) 2011 Adrian McEwen.  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
+*/
+
+#pragma once
+
+#include "Print.h"
+
+namespace arduino {
+
+class Server : public Print {
+  public:
+    virtual void begin() = 0;
+};
+
+}
\ No newline at end of file

cores/rp2040/api/Stream.cpp

+/*
+ Stream.cpp - adds parsing methods to Stream class
+ Copyright (c) 2008 David A. Mellis.  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
+
+ Created July 2011
+ parsing functions based on TextFinder library by Michael Margolis
+
+ findMulti/findUntil routines written by Jim Leonard/Xuth
+ */
+
+#include "Common.h"
+#include "Stream.h"
+
+#define PARSE_TIMEOUT 1000  // default number of milli-seconds to wait
+
+using namespace arduino;
+
+// private method to read stream with timeout
+int Stream::timedRead()
+{
+  int c;
+  _startMillis = millis();
+  do {
+    c = read();
+    if (c >= 0) return c;
+  } while(millis() - _startMillis < _timeout);
+  return -1;     // -1 indicates timeout
+}
+
+// private method to peek stream with timeout
+int Stream::timedPeek()
+{
+  int c;
+  _startMillis = millis();
+  do {
+    c = peek();
+    if (c >= 0) return c;
+  } while(millis() - _startMillis < _timeout);
+  return -1;     // -1 indicates timeout
+}
+
+// returns peek of the next digit in the stream or -1 if timeout
+// discards non-numeric characters
+int Stream::peekNextDigit(LookaheadMode lookahead, bool detectDecimal)
+{
+  int c;
+  while (1) {
+    c = timedPeek();
+
+    if( c < 0 ||
+        c == '-' ||
+        (c >= '0' && c <= '9') ||
+        (detectDecimal && c == '.')) return c;
+
+    switch( lookahead ){
+        case SKIP_NONE: return -1; // Fail code.
+        case SKIP_WHITESPACE:
+            switch( c ){
+                case ' ':
+                case '\t':
+                case '\r':
+                case '\n': break;
+                default: return -1; // Fail code.
+            }
+        case SKIP_ALL:
+            break;
+    }
+    read();  // discard non-numeric
+  }
+}
+
+// Public Methods
+//////////////////////////////////////////////////////////////
+
+void Stream::setTimeout(unsigned long timeout)  // sets the maximum number of milliseconds to wait
+{
+  _timeout = timeout;
+}
+
+ // find returns true if the target string is found
+bool  Stream::find(const char *target)
+{
+  return findUntil(target, strlen(target), NULL, 0);
+}
+
+// reads data from the stream until the target string of given length is found
+// returns true if target string is found, false if timed out
+bool Stream::find(const char *target, size_t length)
+{
+  return findUntil(target, length, NULL, 0);
+}
+
+// as find but search ends if the terminator string is found
+bool  Stream::findUntil(const char *target, const char *terminator)
+{
+  return findUntil(target, strlen(target), terminator, strlen(terminator));
+}
+
+// reads data from the stream until the target string of the given length is found
+// search terminated if the terminator string is found
+// returns true if target string is found, false if terminated or timed out
+bool Stream::findUntil(const char *target, size_t targetLen, const char *terminator, size_t termLen)
+{
+  if (terminator == NULL) {
+    MultiTarget t[1] = {{target, targetLen, 0}};
+    return findMulti(t, 1) == 0;
+  } else {
+    MultiTarget t[2] = {{target, targetLen, 0}, {terminator, termLen, 0}};
+    return findMulti(t, 2) == 0;
+  }
+}
+
+// returns the first valid (long) integer value from the current position.
+// lookahead determines how parseInt looks ahead in the stream.
+// See LookaheadMode enumeration at the top of the file.
+// Lookahead is terminated by the first character that is not a valid part of an integer.
+// Once parsing commences, 'ignore' will be skipped in the stream.
+long Stream::parseInt(LookaheadMode lookahead, char ignore)
+{
+  bool isNegative = false;
+  long value = 0;
+  int c;
+
+  c = peekNextDigit(lookahead, false);
+  // ignore non numeric leading characters
+  if(c < 0)
+    return 0; // zero returned if timeout
+
+  do{
+    if((char)c == ignore)
+      ; // ignore this character
+    else if(c == '-')
+      isNegative = true;
+    else if(c >= '0' && c <= '9')        // is c a digit?
+      value = value * 10 + c - '0';
+    read();  // consume the character we got with peek
+    c = timedPeek();
+  }
+  while( (c >= '0' && c <= '9') || (char)c == ignore );
+
+  if(isNegative)
+    value = -value;
+  return value;
+}
+
+// as parseInt but returns a floating point value
+float Stream::parseFloat(LookaheadMode lookahead, char ignore)
+{
+  bool isNegative = false;
+  bool isFraction = false;
+  double value = 0.0;
+  int c;
+  double fraction = 1.0;
+
+  c = peekNextDigit(lookahead, true);
+    // ignore non numeric leading characters
+  if(c < 0)
+    return 0; // zero returned if timeout
+
+  do{
+    if((char)c == ignore)
+      ; // ignore
+    else if(c == '-')
+      isNegative = true;
+    else if (c == '.')
+      isFraction = true;
+    else if(c >= '0' && c <= '9')  {      // is c a digit?
+      if(isFraction) {
+        fraction *= 0.1;
+        value = value + fraction * (c - '0');
+      } else {
+        value = value * 10 + c - '0';
+      }
+    }
+    read();  // consume the character we got with peek
+    c = timedPeek();
+  }
+  while( (c >= '0' && c <= '9')  || (c == '.' && !isFraction) || (char)c == ignore );
+
+  if(isNegative)
+    value = -value;
+
+  return value;
+}
+
+// read characters from stream into buffer
+// terminates if length characters have been read, or timeout (see setTimeout)
+// returns the number of characters placed in the buffer
+// the buffer is NOT null terminated.
+//
+size_t Stream::readBytes(char *buffer, size_t length)
+{
+  size_t count = 0;
+  while (count < length) {
+    int c = timedRead();
+    if (c < 0) break;
+    *buffer++ = (char)c;
+    count++;
+  }
+  return count;
+}
+
+
+// as readBytes with terminator character
+// terminates if length characters have been read, timeout, or if the terminator character  detected
+// returns the number of characters placed in the buffer (0 means no valid data found)
+
+size_t Stream::readBytesUntil(char terminator, char *buffer, size_t length)
+{
+  size_t index = 0;
+  while (index < length) {
+    int c = timedRead();
+    if (c < 0 || (char)c == terminator) break;
+    *buffer++ = (char)c;
+    index++;
+  }
+  return index; // return number of characters, not including null terminator
+}
+
+String Stream::readString()
+{
+  String ret;
+  int c = timedRead();
+  while (c >= 0)
+  {
+    ret += (char)c;
+    c = timedRead();
+  }
+  return ret;
+}
+
+String Stream::readStringUntil(char terminator)
+{
+  String ret;
+  int c = timedRead();
+  while (c >= 0 && (char)c != terminator)
+  {
+    ret += (char)c;
+    c = timedRead();
+  }
+  return ret;
+}
+
+int Stream::findMulti( struct Stream::MultiTarget *targets, int tCount) {
+  // any zero length target string automatically matches and would make
+  // a mess of the rest of the algorithm.
+  for (struct MultiTarget *t = targets; t < targets+tCount; ++t) {
+    if (t->len <= 0)
+      return t - targets;
+  }
+
+  while (1) {
+    int c = timedRead();
+    if (c < 0)
+      return -1;
+
+    for (struct MultiTarget *t = targets; t < targets+tCount; ++t) {
+      // the simple case is if we match, deal with that first.
+      if ((char)c == t->str[t->index]) {
+        if (++t->index == t->len)
+          return t - targets;
+        else
+          continue;
+      }
+
+      // if not we need to walk back and see if we could have matched further
+      // down the stream (ie '1112' doesn't match the first position in '11112'
+      // but it will match the second position so we can't just reset the current
+      // index to 0 when we find a mismatch.
+      if (t->index == 0)
+        continue;
+
+      int origIndex = t->index;
+      do {
+        --t->index;
+        // first check if current char works against the new current index
+        if ((char)c != t->str[t->index])
+          continue;
+
+        // if it's the only char then we're good, nothing more to check
+        if (t->index == 0) {
+          t->index++;
+          break;
+        }
+
+        // otherwise we need to check the rest of the found string
+        int diff = origIndex - t->index;
+        size_t i;
+        for (i = 0; i < t->index; ++i) {
+          if (t->str[i] != t->str[i + diff])
+            break;
+        }
+
+        // if we successfully got through the previous loop then our current
+        // index is good.
+        if (i == t->index) {
+          t->index++;
+          break;
+        }
+
+        // otherwise we just try the next index
+      } while (t->index);
+    }
+  }
+  // unreachable
+  return -1;
+}

cores/rp2040/api/Stream.h

+/*
+  Stream.h - base class for character-based streams.
+  Copyright (c) 2010 David A. Mellis.  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
+
+  parsing functions based on TextFinder library by Michael Margolis
+*/
+
+#pragma once
+
+#include <inttypes.h>
+#include "Print.h"
+
+// compatability macros for testing
+/*
+#define   getInt()            parseInt()
+#define   getInt(ignore)      parseInt(ignore)
+#define   getFloat()          parseFloat()
+#define   getFloat(ignore)    parseFloat(ignore)
+#define   getString( pre_string, post_string, buffer, length)
+readBytesBetween( pre_string, terminator, buffer, length)
+*/
+
+namespace arduino {
+
+// This enumeration provides the lookahead options for parseInt(), parseFloat()
+// The rules set out here are used until either the first valid character is found
+// or a time out occurs due to lack of input.
+enum LookaheadMode{
+    SKIP_ALL,       // All invalid characters are ignored.
+    SKIP_NONE,      // Nothing is skipped, and the stream is not touched unless the first waiting character is valid.
+    SKIP_WHITESPACE // Only tabs, spaces, line feeds & carriage returns are skipped.
+};
+
+#define NO_IGNORE_CHAR  '\x01' // a char not found in a valid ASCII numeric field
+
+class Stream : public Print
+{
+  protected:
+    unsigned long _timeout;      // number of milliseconds to wait for the next char before aborting timed read
+    unsigned long _startMillis;  // used for timeout measurement
+    int timedRead();    // private method to read stream with timeout
+    int timedPeek();    // private method to peek stream with timeout
+    int peekNextDigit(LookaheadMode lookahead, bool detectDecimal); // returns the next numeric digit in the stream or -1 if timeout
+
+  public:
+    virtual int available() = 0;
+    virtual int read() = 0;
+    virtual int peek() = 0;
+
+    Stream() {_timeout=1000;}
+
+// parsing methods
+
+  void setTimeout(unsigned long timeout);  // sets maximum milliseconds to wait for stream data, default is 1 second
+  unsigned long getTimeout(void) { return _timeout; }
+  
+  bool find(const char *target);   // reads data from the stream until the target string is found
+  bool find(const uint8_t *target) { return find ((const char *)target); }
+  // returns true if target string is found, false if timed out (see setTimeout)
+
+  bool find(const char *target, size_t length);   // reads data from the stream until the target string of given length is found
+  bool find(const uint8_t *target, size_t length) { return find ((const char *)target, length); }
+  // returns true if target string is found, false if timed out
+
+  bool find(char target) { return find (&target, 1); }
+
+  bool findUntil(const char *target, const char *terminator);   // as find but search ends if the terminator string is found
+  bool findUntil(const uint8_t *target, const char *terminator) { return findUntil((const char *)target, terminator); }
+
+  bool findUntil(const char *target, size_t targetLen, const char *terminate, size_t termLen);   // as above but search ends if the terminate string is found
+  bool findUntil(const uint8_t *target, size_t targetLen, const char *terminate, size_t termLen) {return findUntil((const char *)target, targetLen, terminate, termLen); }
+
+  long parseInt(LookaheadMode lookahead = SKIP_ALL, char ignore = NO_IGNORE_CHAR);
+  // returns the first valid (long) integer value from the current position.
+  // lookahead determines how parseInt looks ahead in the stream.
+  // See LookaheadMode enumeration at the top of the file.
+  // Lookahead is terminated by the first character that is not a valid part of an integer.
+  // Once parsing commences, 'ignore' will be skipped in the stream.
+
+  float parseFloat(LookaheadMode lookahead = SKIP_ALL, char ignore = NO_IGNORE_CHAR);
+  // float version of parseInt
+
+  size_t readBytes( char *buffer, size_t length); // read chars from stream into buffer
+  size_t readBytes( uint8_t *buffer, size_t length) { return readBytes((char *)buffer, length); }
+  // terminates if length characters have been read or timeout (see setTimeout)
+  // returns the number of characters placed in the buffer (0 means no valid data found)
+
+  size_t readBytesUntil( char terminator, char *buffer, size_t length); // as readBytes with terminator character
+  size_t readBytesUntil( char terminator, uint8_t *buffer, size_t length) { return readBytesUntil(terminator, (char *)buffer, length); }
+  // terminates if length characters have been read, timeout, or if the terminator character  detected
+  // returns the number of characters placed in the buffer (0 means no valid data found)
+
+  // Arduino String functions to be added here
+  String readString();
+  String readStringUntil(char terminator);
+
+  protected:
+  long parseInt(char ignore) { return parseInt(SKIP_ALL, ignore); }
+  float parseFloat(char ignore) { return parseFloat(SKIP_ALL, ignore); }
+  // These overload exists for compatibility with any class that has derived
+  // Stream and used parseFloat/Int with a custom ignore character. To keep
+  // the public API simple, these overload remains protected.
+
+  struct MultiTarget {
+    const char *str;  // string you're searching for
+    size_t len;       // length of string you're searching for
+    size_t index;     // index used by the search routine.
+  };
+
+  // This allows you to search for an arbitrary number of strings.
+  // Returns index of the target that is found first or -1 if timeout occurs.
+  int findMulti(struct MultiTarget *targets, int tCount);
+};
+
+#undef NO_IGNORE_CHAR
+
+}
\ No newline at end of file

cores/rp2040/api/USBAPI.h

+/*
+  USBAPI.h
+  Copyright (c) 2005-2014 Arduino.  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 __USBAPI__
+#define __USBAPI__
+
+#include <stdint.h>
+
+namespace arduino {
+//================================================================================
+//================================================================================
+//  Low level API
+
+typedef struct __attribute__((packed))
+{
+  union {
+    uint8_t bmRequestType;
+    struct {
+      uint8_t direction : 5;
+      uint8_t type : 2;
+      uint8_t transferDirection : 1;
+    };
+  };
+	uint8_t 	bRequest;
+	uint8_t 	wValueL;
+	uint8_t 	wValueH;
+	uint16_t 	wIndex;
+	uint16_t 	wLength;
+} USBSetup;
+
+}
+
+//================================================================================
+// USB APIs (C scope)
+//================================================================================
+
+int USB_SendControl(uint8_t flags, const void* d, int len);
+int USB_RecvControl(void* d, int len);
+int USB_RecvControlLong(void* d, int len);
+
+uint8_t	USB_Available(uint8_t ep);
+uint8_t USB_SendSpace(uint8_t ep);
+int USB_Send(uint8_t ep, const void* data, int len);	// blocking
+int USB_Recv(uint8_t ep, void* data, int len);		// non-blocking
+int USB_Recv(uint8_t ep);							// non-blocking
+void USB_Flush(uint8_t ep);
+
+#endif
\ No newline at end of file

cores/rp2040/api/Udp.h

+/*
+ *  Udp.cpp: Library to send/receive UDP packets.
+ *
+ * NOTE: UDP is fast, but has some important limitations (thanks to Warren Gray for mentioning these)
+ * 1) UDP does not guarantee the order in which assembled UDP packets are received. This
+ * might not happen often in practice, but in larger network topologies, a UDP
+ * packet can be received out of sequence. 
+ * 2) UDP does not guard against lost packets - so packets *can* disappear without the sender being
+ * aware of it. Again, this may not be a concern in practice on small local networks.
+ * For more information, see http://www.cafeaulait.org/course/week12/35.html
+ *
+ * MIT License:
+ * Copyright (c) 2008 Bjoern Hartmann
+ * 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.
+ *
+ * bjoern@cs.stanford.edu 12/30/2008
+ */
+
+#pragma once
+
+#include "Stream.h"
+#include "IPAddress.h"
+
+namespace arduino {
+
+class UDP : public Stream {
+
+public:
+  virtual uint8_t begin(uint16_t) =0;  // initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
+  virtual uint8_t beginMulticast(IPAddress, uint16_t) { return 0; }  // initialize, start listening on specified multicast IP address and port. Returns 1 if successful, 0 on failure
+  virtual void stop() =0;  // Finish with the UDP socket
+
+  // Sending UDP packets
+  
+  // Start building up a packet to send to the remote host specific in ip and port
+  // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
+  virtual int beginPacket(IPAddress ip, uint16_t port) =0;
+  // Start building up a packet to send to the remote host specific in host and port
+  // Returns 1 if successful, 0 if there was a problem resolving the hostname or port
+  virtual int beginPacket(const char *host, uint16_t port) =0;
+  // Finish off this packet and send it
+  // Returns 1 if the packet was sent successfully, 0 if there was an error
+  virtual int endPacket() =0;
+  // Write a single byte into the packet
+  virtual size_t write(uint8_t) =0;
+  // Write size bytes from buffer into the packet
+  virtual size_t write(const uint8_t *buffer, size_t size) =0;
+
+  // Start processing the next available incoming packet
+  // Returns the size of the packet in bytes, or 0 if no packets are available
+  virtual int parsePacket() =0;
+  // Number of bytes remaining in the current packet
+  virtual int available() =0;
+  // Read a single byte from the current packet
+  virtual int read() =0;
+  // Read up to len bytes from the current packet and place them into buffer
+  // Returns the number of bytes read, or 0 if none are available
+  virtual int read(unsigned char* buffer, size_t len) =0;
+  // Read up to len characters from the current packet and place them into buffer
+  // Returns the number of characters read, or 0 if none are available
+  virtual int read(char* buffer, size_t len) =0;
+  // Return the next byte from the current packet without moving on to the next byte
+  virtual int peek() =0;
+  virtual void flush() =0;	// Finish reading the current packet
+
+  // Return the IP address of the host who sent the current incoming packet
+  virtual IPAddress remoteIP() =0;
+  // Return the port of the host who sent the current incoming packet
+  virtual uint16_t remotePort() =0;
+protected:
+  uint8_t* rawIPAddress(IPAddress& addr) { return addr.raw_address(); };
+};
+
+}
+
+using namespace arduino;

cores/rp2040/api/WCharacter.h

+/*
+ WCharacter.h - Character utility functions for Wiring & Arduino
+ Copyright (c) 2010 Hernando Barragan.  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 Character_h
+#define Character_h
+
+#include <ctype.h>
+
+namespace arduino {
+
+// WCharacter.h prototypes
+inline bool isAlphaNumeric(int c) __attribute__((always_inline));
+inline bool isAlpha(int c) __attribute__((always_inline));
+inline bool isAscii(int c) __attribute__((always_inline));
+inline bool isWhitespace(int c) __attribute__((always_inline));
+inline bool isControl(int c) __attribute__((always_inline));
+inline bool isDigit(int c) __attribute__((always_inline));
+inline bool isGraph(int c) __attribute__((always_inline));
+inline bool isLowerCase(int c) __attribute__((always_inline));
+inline bool isPrintable(int c) __attribute__((always_inline));
+inline bool isPunct(int c) __attribute__((always_inline));
+inline bool isSpace(int c) __attribute__((always_inline));
+inline bool isUpperCase(int c) __attribute__((always_inline));
+inline bool isHexadecimalDigit(int c) __attribute__((always_inline));
+inline int toAscii(int c) __attribute__((always_inline));
+inline int toLowerCase(int c) __attribute__((always_inline));
+inline int toUpperCase(int c)__attribute__((always_inline));
+
+
+// Checks for an alphanumeric character. 
+// It is equivalent to (isalpha(c) || isdigit(c)).
+inline bool isAlphaNumeric(int c) 
+{
+  return ( isalnum(c) == 0 ? false : true);
+}
+
+
+// Checks for an alphabetic character. 
+// It is equivalent to (isupper(c) || islower(c)).
+inline bool isAlpha(int c)
+{
+  return ( isalpha(c) == 0 ? false : true);
+}
+
+
+// Checks whether c is a 7-bit unsigned char value 
+// that fits into the ASCII character set.
+inline bool isAscii(int c)
+{
+  return ( isascii (c) == 0 ? false : true);
+}
+
+
+// Checks for a blank character, that is, a space or a tab.
+inline bool isWhitespace(int c)
+{
+  return ( isblank (c) == 0 ? false : true);
+}
+
+
+// Checks for a control character.
+inline bool isControl(int c)
+{
+  return ( iscntrl (c) == 0 ? false : true);
+}
+
+
+// Checks for a digit (0 through 9).
+inline bool isDigit(int c)
+{
+  return ( isdigit (c) == 0 ? false : true);
+}
+
+
+// Checks for any printable character except space.
+inline bool isGraph(int c)
+{
+  return ( isgraph (c) == 0 ? false : true);
+}
+
+
+// Checks for a lower-case character.
+inline bool isLowerCase(int c)
+{
+  return (islower (c) == 0 ? false : true);
+}
+
+
+// Checks for any printable character including space.
+inline bool isPrintable(int c)
+{
+  return ( isprint (c) == 0 ? false : true);
+}
+
+
+// Checks for any printable character which is not a space 
+// or an alphanumeric character.
+inline bool isPunct(int c)
+{
+  return ( ispunct (c) == 0 ? false : true);
+}
+
+
+// Checks for white-space characters. For the avr-libc library, 
+// these are: space, formfeed ('\f'), newline ('\n'), carriage 
+// return ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
+inline bool isSpace(int c)
+{
+  return ( isspace (c) == 0 ? false : true);
+}
+
+
+// Checks for an uppercase letter.
+inline bool isUpperCase(int c)
+{
+  return ( isupper (c) == 0 ? false : true);
+}
+
+
+// Checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7 
+// 8 9 a b c d e f A B C D E F.
+inline bool isHexadecimalDigit(int c)
+{
+  return ( isxdigit (c) == 0 ? false : true);
+}
+
+
+// Converts c to a 7-bit unsigned char value that fits into the 
+// ASCII character set, by clearing the high-order bits.
+inline int toAscii(int c)
+{
+  return toascii (c);
+}
+
+
+// Warning:
+// Many people will be unhappy if you use this function. 
+// This function will convert accented letters into random 
+// characters.
+
+// Converts the letter c to lower case, if possible.
+inline int toLowerCase(int c)
+{
+  return tolower (c);
+}
+
+
+// Converts the letter c to upper case, if possible.
+inline int toUpperCase(int c)
+{
+  return toupper (c);
+}
+
+}
+#endif
\ No newline at end of file

cores/rp2040/api/deprecated-avr-comp/avr/dtostrf.c.impl

+/*
+  dtostrf - Emulation for dtostrf function from avr-libc
+  Copyright (c) 2016 Arduino LLC.  All rights 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
+*/
+
+// This is a default implementation for dtostrf function.
+// This file should be used if the standard lib doesn't provide an
+// implementation of dtostrf.
+
+// Create a file called "dtostrf.c" with the following include:
+// #include "api/deprecated-avr-comp/avr/dtostrf.c.impl"
+
+#include <stdio.h>
+
+char *dtostrf (double val, signed char width, unsigned char prec, char *sout) {
+  asm(".global _printf_float");
+
+  char fmt[20];
+  sprintf(fmt, "%%%d.%df", width, prec);
+  sprintf(sout, fmt, val);
+  return sout;
+}
+

cores/rp2040/api/deprecated-avr-comp/avr/dtostrf.h

+/*
+  dtostrf - Emulation for dtostrf function from avr-libc
+  Copyright (c) 2015 Arduino LLC.  All rights 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
+*/
+
+#pragma once
+
+#if !defined(ARDUINO_ARCH_AVR)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+char *dtostrf(double val, signed char width, unsigned char prec, char *sout);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

cores/rp2040/api/deprecated-avr-comp/avr/interrupt.h

+/*
+  Copyright (c) 2015 Arduino LCC.  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
+*/
+
+/*
+  Empty file.
+  This file is here to allow compatibility with sketches (made for AVR)
+  that includes <AVR/interrupt.h>
+*/

cores/rp2040/api/deprecated-avr-comp/avr/pgmspace.h

+/*
+  pgmspace.h - Definitions for compatibility with AVR pgmspace macros
+
+  Copyright (c) 2015 Arduino LLC
+
+  Based on work of Paul Stoffregen on Teensy 3 (http://pjrc.com)
+
+  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 __PGMSPACE_H_
+#define __PGMSPACE_H_ 1
+
+#include <inttypes.h>
+
+#define PROGMEM
+#define PGM_P  const char *
+#define PSTR(str) (str)
+
+#define _SFR_BYTE(n) (n)
+
+typedef void prog_void;
+typedef char prog_char;
+typedef unsigned char prog_uchar;
+typedef int8_t prog_int8_t;
+typedef uint8_t prog_uint8_t;
+typedef int16_t prog_int16_t;
+typedef uint16_t prog_uint16_t;
+typedef int32_t prog_int32_t;
+typedef uint32_t prog_uint32_t;
+typedef int64_t prog_int64_t;
+typedef uint64_t prog_uint64_t;
+
+typedef const void* int_farptr_t;
+typedef const void* uint_farptr_t;
+
+#define memchr_P(s, c, n) memchr((s), (c), (n))
+#define memcmp_P(s1, s2, n) memcmp((s1), (s2), (n))
+#define memccpy_P(dest, src, c, n) memccpy((dest), (src), (c), (n))
+#define memcpy_P(dest, src, n) memcpy((dest), (src), (n))
+#define memmem_P(haystack, haystacklen, needle, needlelen) memmem((haystack), (haystacklen), (needle), (needlelen))
+#define memrchr_P(s, c, n) memrchr((s), (c), (n))
+#define strcat_P(dest, src) strcat((dest), (src))
+#define strchr_P(s, c) strchr((s), (c))
+#define strchrnul_P(s, c) strchrnul((s), (c))
+#define strcmp_P(a, b) strcmp((a), (b))
+#define strcpy_P(dest, src) strcpy((dest), (src))
+#define strcasecmp_P(s1, s2) strcasecmp((s1), (s2))
+#define strcasestr_P(haystack, needle) strcasestr((haystack), (needle))
+#define strcspn_P(s, accept) strcspn((s), (accept))
+#define strlcat_P(s1, s2, n) strlcat((s1), (s2), (n))
+#define strlcpy_P(s1, s2, n) strlcpy((s1), (s2), (n))
+#define strlen_P(a) strlen((a))
+#define strnlen_P(s, n) strnlen((s), (n))
+#define strncmp_P(s1, s2, n) strncmp((s1), (s2), (n))
+#define strncasecmp_P(s1, s2, n) strncasecmp((s1), (s2), (n))
+#define strncat_P(s1, s2, n) strncat((s1), (s2), (n))
+#define strncpy_P(s1, s2, n) strncpy((s1), (s2), (n))
+#define strpbrk_P(s, accept) strpbrk((s), (accept))
+#define strrchr_P(s, c) strrchr((s), (c))
+#define strsep_P(sp, delim) strsep((sp), (delim))
+#define strspn_P(s, accept) strspn((s), (accept))
+#define strstr_P(a, b) strstr((a), (b))
+#define strtok_P(s, delim) strtok((s), (delim))
+#define strtok_rP(s, delim, last) strtok((s), (delim), (last))
+
+#define strlen_PF(a) strlen((a))
+#define strnlen_PF(src, len) strnlen((src), (len))
+#define memcpy_PF(dest, src, len) memcpy((dest), (src), (len))
+#define strcpy_PF(dest, src) strcpy((dest), (src))
+#define strncpy_PF(dest, src, len) strncpy((dest), (src), (len))
+#define strcat_PF(dest, src) strcat((dest), (src))
+#define strlcat_PF(dest, src, len) strlcat((dest), (src), (len))
+#define strncat_PF(dest, src, len) strncat((dest), (src), (len))
+#define strcmp_PF(s1, s2) strcmp((s1), (s2))
+#define strncmp_PF(s1, s2, n) strncmp((s1), (s2), (n))
+#define strcasecmp_PF(s1, s2) strcasecmp((s1), (s2))
+#define strncasecmp_PF(s1, s2, n) strncasecmp((s1), (s2), (n))
+#define strstr_PF(s1, s2) strstr((s1), (s2))
+#define strlcpy_PF(dest, src, n) strlcpy((dest), (src), (n))
+#define memcmp_PF(s1, s2, n) memcmp((s1), (s2), (n))
+
+#define sprintf_P(s, f, ...) sprintf((s), (f), __VA_ARGS__)
+#define snprintf_P(s, f, ...) snprintf((s), (f), __VA_ARGS__)
+#define vsprintf_P(s, f, ...) vsprintf((s), (f), __VA_ARGS__)
+#define vsnprintf_P(s, f, ...) vsnprintf((s), (f), __VA_ARGS__)
+
+#if 0
+// Requires natural aligned addresses
+#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
+#define pgm_read_word(addr) (*(const unsigned short *)(addr))
+#define pgm_read_dword(addr) (*(const unsigned long *)(addr))
+#define pgm_read_float(addr) (*(const float *)(addr))
+#define pgm_read_ptr(addr) (*(void *const *)(addr))
+#else
+// Supports misaligned addresses
+#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
+#define pgm_read_word(addr) ((unsigned short)(pgm_read_byte((intptr_t)addr) | (pgm_read_byte((intptr_t)addr + 1) << 8)))
+#define pgm_read_dword(addr) ((unsigned long)(pgm_read_byte((intptr_t)addr) | (pgm_read_byte((intptr_t)addr + 1) << 8)) | \
+                                             (pgm_read_byte((intptr_t)addr + 2) << 16) | (pgm_read_byte((intptr_t)addr + 3) << 24))
+#define pgm_read_ptr(addr) ((void *)pgm_read_dword(addr))
+static inline float pgm_read_float(const void *addr) {
+    union {
+        void *p;
+        float f;
+    } x;
+    x.p = pgm_read_ptr(addr);
+    return x.f;
+}
+#endif
+
+#define pgm_read_byte_near(addr) pgm_read_byte(addr)
+#define pgm_read_word_near(addr) pgm_read_word(addr)
+#define pgm_read_dword_near(addr) pgm_read_dword(addr)
+#define pgm_read_float_near(addr) pgm_read_float(addr)
+#define pgm_read_ptr_near(addr) pgm_read_ptr(addr)
+
+#define pgm_read_byte_far(addr) pgm_read_byte(addr)
+#define pgm_read_word_far(addr) pgm_read_word(addr)
+#define pgm_read_dword_far(addr) pgm_read_dword(addr)
+#define pgm_read_float_far(addr) pgm_read_float(addr)
+#define pgm_read_ptr_far(addr) pgm_read_ptr(addr)
+
+#define pgm_get_far_address(addr) (&(addr))
+
+#endif

cores/rp2040/api/deprecated/Client.h

+/*
+  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
+*/
+
+// including Client.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Client.h"
+
+

cores/rp2040/api/deprecated/HardwareSerial.h

+/*
+  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
+*/
+
+// including HardwareSerial.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../HardwareSerial.h"
+
+

cores/rp2040/api/deprecated/IPAddress.h

+/*
+  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
+*/
+
+// including IPAddress.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../IPAddress.h"
+
+

cores/rp2040/api/deprecated/Print.h

+/*
+  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
+*/
+
+// including Print.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Print.h"
+

cores/rp2040/api/deprecated/Printable.h

+/*
+  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
+*/
+
+// including Printable.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Printable.h"
+

cores/rp2040/api/deprecated/Server.h

+/*
+  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
+*/
+
+// including Server.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Server.h"
+
+

cores/rp2040/api/deprecated/Stream.h

+/*
+  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
+*/
+
+// including Stream.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Stream.h"
+
+

cores/rp2040/api/deprecated/Udp.h

+/*
+  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
+*/
+
+// including Udp.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../Udp.h"
+
+

cores/rp2040/api/deprecated/WString.h

+/*
+  Copyright 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
+*/
+
+// including WString.h is deprecated, for all future projects use Arduino.h instead
+
+// This include is added for compatibility, it will be remove on the next
+// major release of the API
+#include "../String.h"
+

cores/rp2040/api/itoa.h

+/*
+  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
+*/
+
+#pragma once
+
+// Standard C functions required in Arduino API
+// If these functions are not provided by the standard library, the
+// core should supply an implementation of them.
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern char* itoa(int value, char *string, int radix);
+extern char* ltoa(long value, char *string, int radix);
+extern char* utoa(unsigned value, char *string, int radix);
+extern char* ultoa(unsigned long value, char *string, int radix);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+

tests/common.sh

@@ -199,9 +199,7 @@ function install_ide()
     mkdir pico
     cd pico
     if [ "$WINDOWS" = "1" ]; then
-        rm $core_path/cores/rp2040/api
         cp -a $core_path rp2040
-        cp -a $core_path/ArduinoCore-API/api rp2040/cores/rp2040/api
     else
         ln -s $core_path rp2040
     fi

tests/restyle.sh

@@ -4,6 +4,6 @@ for dir in ./cores/rp2040 ./libraries/EEPROM ./libraries/I2S \
            ./libraries/LittleFS/src ./libraries/LittleFS/examples \
            ./libraries/rp2040 ./libraries/SD ./libraries/SdFat \
            ./libraries/Servo ./libraries/SPI ./libraries/Wire; do
-    find $dir  \( -name "*.c" -o -name "*.h" -o -name "*.cpp" \) -exec astyle --suffix=none --options=./tests/astyle_core.conf \{\} \;
-    find $dir -name "*.ino" -exec astyle --suffix=none --options=./tests/astyle_examples.conf \{\} \;
+    find $dir -type f \( -name "*.c" -o -name "*.h" -o -name "*.cpp" \) -a  \! -path '*api*' -exec astyle --suffix=none --options=./tests/astyle_core.conf \{\} \;
+    find $dir -type f -name "*.ino" -exec astyle --suffix=none --options=./tests/astyle_examples.conf \{\} \;
 done