Merge pull request #373 from adafruit/add-issue-template

add issue template

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,95 @@
+name: Bug Report
+description: Report a problem
+labels: 'Bug'
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to fill out this bug report!
+        It's okay to leave some blank if it doesn't apply to your problem.
+
+  - type: dropdown
+    attributes:
+      label: Operating System
+      options:
+              - Linux
+              - MacOS
+              - RaspberryPi OS
+              - Windows 7
+              - Windows 10
+              - Windows 11
+              - Others
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Arduino IDE version
+      placeholder: e.g Arduino 1.8.15
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Board
+      placeholder: e.g Metro M4 Express
+    validations:
+      required: true
+      
+  - type: input
+    attributes:
+      label: ArduinoCore version
+      description: Can be found under "Board Manager" menu
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Sketch as ATTACHED TXT
+      placeholder: |
+        e.g examples/MassStorage/msc_ramdisk.
+        If it is custom sketch, please provide it as **ATTACHED** files or link to it.
+        Pasting raw long code that hurts readability can get your issue **closed**
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Compiled Log as ATTACHED TXT
+      placeholder: |
+        Compiled log from Arduino IDE as **ATTACHED** txt.
+        Pasting raw long log that hurts readability can get your issue **closed**
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: What happened ?
+      placeholder: A clear and concise description of what the bug is.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: How to reproduce ?
+      placeholder: |
+        1. Go to '...'
+        2. Click on '....'
+        3. See error      
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Debug Log as ATTACHED TXT
+      placeholder: |
+        Debug log where the issue occurred as attached txt file, best with comments to explain the actual events.
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Screenshots
+      description: If applicable, add screenshots to help explain your problem.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Adafruit Support Forum
+    url: https://forums.adafruit.com
+    about: If you have other questions or need help, post it here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: Feature
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/githubci.yml

@@ -7,27 +7,30 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arduino-platform: ['metro_m0', 'hallowing', 'circuitplayground_m0',
-                           'metro_m4', 'pybadge_m4', 'pygamer_m4', 'hallowing_m4', 'pyportal_m4', 'pyportal_m4_titano']
+        board:
+          # Alphabetical order
+          - 'circuitplayground_m0'
+          - 'feather_m4_can'
+          - 'hallowing'
+          - 'hallowing_m4'
+          - 'metro_m0'
+          - 'metro_m4'
+          - 'pybadge_m4'
+          - 'pygamer_m4'
+          - 'pyportal_m4'
+          - 'pyportal_m4_titano'
+          # with TinyUSB
+          - 'metro_m0:usbstack=tinyusb'
+          - 'metro_m4:speed=120,usbstack=tinyusb'
 
     runs-on: ubuntu-latest
     
     steps:
-    - name: Setup Python
-      uses: actions/setup-python@v1
-      with:
-        python-version: '3.x'
-        
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
+      with:
+        submodules: 'true'
 
-    - name: Checkout submodules
-      shell: bash
-      run: |
-        auth_header="$(git config --local --get http.https://github.com/.extraheader)"
-        git submodule sync --recursive
-        git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive      
-        
     - name: Install Arduino CLI and Tools
       run: |
         # make all our directories we need for files and libraries
@@ -42,7 +45,6 @@ jobs:
       env:
         BSP_URL: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
         BSP_PATH: .arduino15/packages/adafruit/hardware/samd
-        LIB_DEPS: FlashStorage SD
       run: |
         arduino-cli config init
         arduino-cli core update-index
@@ -53,11 +55,7 @@ jobs:
         BSP_VERSION=`eval ls $HOME/$BSP_PATH`
         rm -r $HOME/$BSP_PATH/*
         ln -s $GITHUB_WORKSPACE $HOME/$BSP_PATH/$BSP_VERSION
-        arduino-cli lib install $LIB_DEPS
+        arduino-cli lib install "Adafruit NeoPixel" "Adafruit seesaw Library" "Adafruit SPIFlash" "FlashStorage" "MIDI Library" "SD" "SdFat - Adafruit Fork"
 
     - name: Build examples
-      run: python3 extras/build_all.py ${{ matrix.arduino-platform }}
-
-    # How to mark this as allowed-to-fail?
-    - name: Build examples (-Wall)
-      run: python3 extras/build_all.py --all_warnings --warnings_do_not_cause_job_failure
+      run: python3 tools/build_all.py ${{ matrix.board }}

.gitignore

@@ -2,4 +2,5 @@
 *.atsuo
 
 bootloaders/*/build/
-*~
+*~
+/libraries/**/build/

.gitmodules

@@ -1,3 +1,6 @@
-[submodule "cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore"]
-	path = cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore
-	url = https://github.com/adafruit/Adafruit_TinyUSB_ArduinoCore.git
+[submodule "libraries/Adafruit_TinyUSB_Arduino"]
+	path = libraries/Adafruit_TinyUSB_Arduino
+	url = https://github.com/adafruit/Adafruit_TinyUSB_Arduino.git
+[submodule "libraries/Adafruit_ZeroDMA"]
+	path = libraries/Adafruit_ZeroDMA
+	url = https://github.com/adafruit/Adafruit_ZeroDMA

cores/arduino/Arduino.h

@@ -150,12 +150,13 @@ void loop( void ) ;
 
 // USB
 #ifdef USE_TINYUSB
-#include "Adafruit_TinyUSB_Core.h"
+  // Needed for declaring Serial
+  #include "Adafruit_USBD_CDC.h"
 #else
-#include "USB/USBDesc.h"
-#include "USB/USBCore.h"
-#include "USB/USBAPI.h"
-#include "USB/USB_host.h"
+  #include "USB/USBDesc.h"
+  #include "USB/USBCore.h"
+  #include "USB/USBAPI.h"
+  #include "USB/USB_host.h"
 #endif
 
 #endif // Arduino_h

cores/arduino/Print.cpp

@@ -94,6 +94,28 @@ size_t Print::print(unsigned long n, int base)
   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);
@@ -172,6 +194,20 @@ size_t Print::println(unsigned long num, int base)
   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);
@@ -218,6 +254,81 @@ size_t Print::printNumber(unsigned long n, uint8_t base)
   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, uint8_t digits)
 {
   size_t n = 0;
@@ -262,3 +373,4 @@ size_t Print::printFloat(double number, uint8_t digits)
 
   return n;
 }
+

cores/arduino/Print.h

@@ -37,6 +37,7 @@ 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, uint8_t);
   protected:
     void setWriteError(int err = 1) { write_error = err; }
@@ -69,6 +70,8 @@ class Print
     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&);
 
@@ -81,6 +84,8 @@ class Print
     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);

cores/arduino/SERCOM.cpp

@@ -556,29 +556,35 @@ bool SERCOM::startTransmissionWIRE(uint8_t address, SercomWireReadWriteFlag flag
   // Address Transmitted
   if ( flag == WIRE_WRITE_FLAG ) // Write mode
   {
-    while( !sercom->I2CM.INTFLAG.bit.MB )
-    {
+    while( !sercom->I2CM.INTFLAG.bit.MB ) {
       // Wait transmission complete
+
+      // If certain errors occur, the MB bit may never be set (RFTM: SAMD21 sec:28.10.6; SAMD51 sec:36.10.7).
+      // The data transfer errors that can occur (including BUSERR) are all
+      // rolled up into INTFLAG.bit.ERROR from STATUS.reg
+      if (sercom->I2CM.INTFLAG.bit.ERROR) {
+        return false;
+      }
     }
   }
   else  // Read mode
   {
-    while( !sercom->I2CM.INTFLAG.bit.SB )
-    {
-        // If the slave NACKS the address, the MB bit will be set.
-        // In that case, send a stop condition and return false.
-        if (sercom->I2CM.INTFLAG.bit.MB) {
-            sercom->I2CM.CTRLB.bit.CMD = 3; // Stop condition
-            return false;
-        }
+    while( !sercom->I2CM.INTFLAG.bit.SB ) {
       // Wait transmission complete
+
+      // If the slave NACKS the address, the MB bit will be set.
+      // A variety of errors in the STATUS register can set the ERROR bit in the INTFLAG register
+      // In that case, send a stop condition and return false.
+      if (sercom->I2CM.INTFLAG.bit.MB || sercom->I2CM.INTFLAG.bit.ERROR) {
+        sercom->I2CM.CTRLB.bit.CMD = 3; // Stop condition
+        return false;
+      }
     }
 
     // Clean the 'Slave on Bus' flag, for further usage.
     //sercom->I2CM.INTFLAG.bit.SB = 0x1ul;
   }
 
-
   //ACK received (0: ACK, 1: NACK)
   if(sercom->I2CM.STATUS.bit.RXNACK)
   {
@@ -597,10 +603,11 @@ bool SERCOM::sendDataMasterWIRE(uint8_t data)
 
   //Wait transmission successful
   while(!sercom->I2CM.INTFLAG.bit.MB) {
-
-    // If a bus error occurs, the MB bit may never be set.
-    // Check the bus error bit and bail if it's set.
-    if (sercom->I2CM.STATUS.bit.BUSERR) {
+    // If a data transfer error occurs, the MB bit may never be set.
+    // Check the error bit and bail if it's set.
+    // The data transfer errors that can occur (including BUSERR) are all
+    // rolled up into INTFLAG.bit.ERROR from STATUS.reg
+    if (sercom->I2CM.INTFLAG.bit.ERROR) {
       return false;
     }
   }
@@ -701,9 +708,17 @@ uint8_t SERCOM::readDataWIRE( void )
 {
   if(isMasterWIRE())
   {
-    while( sercom->I2CM.INTFLAG.bit.SB == 0 )
-    {
+    while (sercom->I2CM.INTFLAG.bit.SB == 0) {
       // Waiting complete receive
+      // A variety of errors in the STATUS register can set the ERROR bit in the INTFLAG register
+      // In that case, send a stop condition and return false.
+      // readDataWIRE should really be able to indicate an error (which would never be used
+      // because the readDataWIRE callers (in Wire.cpp) should have checked availableWIRE() first and timed it
+      // out if the data never showed up
+      if (sercom->I2CM.INTFLAG.bit.MB || sercom->I2CM.INTFLAG.bit.ERROR) {
+        sercom->I2CM.CTRLB.bit.CMD = 3; // Stop condition
+        return 0xFF;
+      }
     }
 
     return sercom->I2CM.DATA.bit.DATA ;

cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore

@@ -1 +0,0 @@
-Subproject commit e7b892095f2bb5d8bef6a748238369bdd268ed5e

cores/arduino/TinyUSB/Adafruit_TinyUSB_SAMD.cpp

@@ -1,195 +0,0 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2019, hathach for Adafruit
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifdef USE_TINYUSB
-
-#include "Arduino.h"
-#include "Adafruit_TinyUSB_Core.h"
-#include <Reset.h> // Needed for auto-reset with 1200bps port touch
-
-//--------------------------------------------------------------------+
-// Forward USB interrupt events to TinyUSB IRQ Handler
-//--------------------------------------------------------------------+
-extern "C"
-{
-#if defined(__SAMD51__)
-
-void USB_0_Handler (void) { tud_int_handler(0); }
-void USB_1_Handler (void) { tud_int_handler(0); }
-void USB_2_Handler (void) { tud_int_handler(0); }
-void USB_3_Handler (void) { tud_int_handler(0); }
-
-#else
-
-void USB_Handler(void) { tud_int_handler(0); }
-
-#endif
-} // extern C
-
-
-
-//--------------------------------------------------------------------+
-// MACRO TYPEDEF CONSTANT ENUM DECLARATION
-//--------------------------------------------------------------------+
-static void usb_hardware_init(void);
-
-#if CFG_TUSB_DEBUG
-extern "C" int serial1_printf(const char *__restrict format, ...)
-{
-  char buf[PRINTF_BUF];
-  va_list ap;
-  va_start(ap, format);
-  vsnprintf(buf, sizeof(buf), format, ap);
-  Serial1.write(buf);
-  va_end(ap);
-
-}
-#endif
-
-//--------------------------------------------------------------------+
-// Core Init & Touch1200
-//--------------------------------------------------------------------+
-void Adafruit_TinyUSB_Core_init(void)
-{
-#if CFG_TUSB_DEBUG
-  Serial1.begin(115200);
-  serial1_printf("TinyUSB debugging with Serial1\n");
-#endif
-
-  Serial.setStringDescriptor("TinyUSB Serial");
-  USBDevice.addInterface(Serial);
-  USBDevice.setID(USB_VID, USB_PID);
-  USBDevice.begin();
-
-  usb_hardware_init();
-
-  // Init tinyusb stack
-  tusb_init();
-}
-
-void Adafruit_TinyUSB_Core_touch1200(void)
-{
-  initiateReset(250);
-}
-
-//--------------------------------------------------------------------+
-// Adafruit_USBD_Device platform dependent
-//--------------------------------------------------------------------+
-
-uint8_t Adafruit_USBD_Device::getSerialDescriptor(uint16_t* serial_str)
-{
-  enum { SERIAL_BYTE_LEN = 16 };
-
-#ifdef __SAMD51__
-  uint32_t* id_addresses[4] = {(uint32_t *) 0x008061FC, (uint32_t *) 0x00806010,
-                               (uint32_t *) 0x00806014, (uint32_t *) 0x00806018};
-#else // samd21
-  uint32_t* id_addresses[4] = {(uint32_t *) 0x0080A00C, (uint32_t *) 0x0080A040,
-                               (uint32_t *) 0x0080A044, (uint32_t *) 0x0080A048};
-
-#endif
-
-  uint8_t raw_id[SERIAL_BYTE_LEN];
-
-  for (int i=0; i<4; i++) {
-      for (int k=0; k<4; k++) {
-          raw_id[4 * i + (3 - k)] = (*(id_addresses[i]) >> k * 8) & 0xff;
-      }
-  }
-
-  static const char nibble_to_hex[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
-
-  for (unsigned int i = 0; i < sizeof(raw_id); i++) {
-    for (int j = 0; j < 2; j++) {
-      uint8_t nibble = (raw_id[i] >> (j * 4)) & 0xf;
-      // Strings are UTF-16-LE encoded.
-      serial_str[i * 2 + (1 - j)] = nibble_to_hex[nibble];
-    }
-  }
-
-  return sizeof(raw_id)*2;
-}
-
-//--------------------------------------------------------------------+
-// Helpers
-//--------------------------------------------------------------------+
-
-// Init usb hardware when starting up. Softdevice is not enabled yet
-static void usb_hardware_init(void)
-{
-#ifdef PIN_LED_TXL
-//	txLEDPulse = 0;
-	pinMode(PIN_LED_TXL, OUTPUT);
-	digitalWrite(PIN_LED_TXL, HIGH);
-#endif
-
-#ifdef PIN_LED_RXL
-//	rxLEDPulse = 0;
-	pinMode(PIN_LED_RXL, OUTPUT);
-	digitalWrite(PIN_LED_RXL, HIGH);
-#endif
-
-	/* Enable USB clock */
-#if defined(__SAMD51__)
-	MCLK->APBBMASK.reg |= MCLK_APBBMASK_USB;
-	MCLK->AHBMASK.reg |= MCLK_AHBMASK_USB;
-
-	// Set up the USB DP/DN pins
-	PORT->Group[0].PINCFG[PIN_PA24H_USB_DM].bit.PMUXEN = 1;
-	PORT->Group[0].PMUX[PIN_PA24H_USB_DM/2].reg &= ~(0xF << (4 * (PIN_PA24H_USB_DM & 0x01u)));
-	PORT->Group[0].PMUX[PIN_PA24H_USB_DM/2].reg |= MUX_PA24H_USB_DM << (4 * (PIN_PA24H_USB_DM & 0x01u));
-	PORT->Group[0].PINCFG[PIN_PA25H_USB_DP].bit.PMUXEN = 1;
-	PORT->Group[0].PMUX[PIN_PA25H_USB_DP/2].reg &= ~(0xF << (4 * (PIN_PA25H_USB_DP & 0x01u)));
-	PORT->Group[0].PMUX[PIN_PA25H_USB_DP/2].reg |= MUX_PA25H_USB_DP << (4 * (PIN_PA25H_USB_DP & 0x01u));
-
-
-	GCLK->PCHCTRL[USB_GCLK_ID].reg = GCLK_PCHCTRL_GEN_GCLK1_Val | (1 << GCLK_PCHCTRL_CHEN_Pos);
-
-	NVIC_SetPriority(USB_0_IRQn, 0UL);
-	NVIC_SetPriority(USB_1_IRQn, 0UL);
-	NVIC_SetPriority(USB_2_IRQn, 0UL);
-	NVIC_SetPriority(USB_3_IRQn, 0UL);
-#else
-	PM->APBBMASK.reg |= PM_APBBMASK_USB;
-
-	// Set up the USB DP/DN pins
-	PORT->Group[0].PINCFG[PIN_PA24G_USB_DM].bit.PMUXEN = 1;
-	PORT->Group[0].PMUX[PIN_PA24G_USB_DM/2].reg &= ~(0xF << (4 * (PIN_PA24G_USB_DM & 0x01u)));
-	PORT->Group[0].PMUX[PIN_PA24G_USB_DM/2].reg |= MUX_PA24G_USB_DM << (4 * (PIN_PA24G_USB_DM & 0x01u));
-	PORT->Group[0].PINCFG[PIN_PA25G_USB_DP].bit.PMUXEN = 1;
-	PORT->Group[0].PMUX[PIN_PA25G_USB_DP/2].reg &= ~(0xF << (4 * (PIN_PA25G_USB_DP & 0x01u)));
-	PORT->Group[0].PMUX[PIN_PA25G_USB_DP/2].reg |= MUX_PA25G_USB_DP << (4 * (PIN_PA25G_USB_DP & 0x01u));
-
-	// Put Generic Clock Generator 0 as source for Generic Clock Multiplexer 6 (USB reference)
-	GCLK->CLKCTRL.reg = GCLK_CLKCTRL_ID(6)     | // Generic Clock Multiplexer 6
-	GCLK_CLKCTRL_GEN_GCLK0 | // Generic Clock Generator 0 is source
-	GCLK_CLKCTRL_CLKEN;
-	while (GCLK->STATUS.bit.SYNCBUSY)
-	;
-
-	NVIC_SetPriority((IRQn_Type) USB_IRQn, 0UL);
-#endif
-}
-
-#endif // USE_TINYUSB

cores/arduino/TinyUSB/tusb_config.h

@@ -1,93 +0,0 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2018, hathach for Adafruit
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifndef _TUSB_CONFIG_H_
-#define _TUSB_CONFIG_H_
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-//--------------------------------------------------------------------
-// COMMON CONFIGURATION
-//--------------------------------------------------------------------
-#ifdef __SAMD51__
-  #define CFG_TUSB_MCU                OPT_MCU_SAMD51
-#else
-  #define CFG_TUSB_MCU                OPT_MCU_SAMD21
-#endif
-
-#ifdef USE_TINYUSB
-  #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
-#else
-  #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_NONE
-#endif
-
-#define CFG_TUSB_OS                 OPT_OS_NONE
-
-#define CFG_TUSB_DEBUG              0
-#if CFG_TUSB_DEBUG
-  #define tu_printf                 serial1_printf
-  extern int serial1_printf(const char *__restrict __format, ...);
-#endif
-
-#define CFG_TUSB_MEM_SECTION
-#define CFG_TUSB_MEM_ALIGN          TU_ATTR_ALIGNED(4)
-
-//--------------------------------------------------------------------
-// DEVICE CONFIGURATION
-//--------------------------------------------------------------------
-
-#define CFG_TUD_ENDOINT0_SIZE       64
-
-//------------- CLASS -------------//
-#define CFG_TUD_CDC                 1
-#define CFG_TUD_MSC                 1
-#define CFG_TUD_HID                 1
-#define CFG_TUD_MIDI                1
-#define CFG_TUD_VENDOR              1
-
-// CDC FIFO size of TX and RX
-#define CFG_TUD_CDC_RX_BUFSIZE      256
-#define CFG_TUD_CDC_TX_BUFSIZE      256
-
-// MSC Buffer size of Device Mass storage
-#define CFG_TUD_MSC_BUFSIZE         512
-
-// HID buffer size Should be sufficient to hold ID (if any) + Data
-#define CFG_TUD_HID_BUFSIZE         64
-
-// MIDI FIFO size of TX and RX
-#define CFG_TUD_MIDI_RX_BUFSIZE     128
-#define CFG_TUD_MIDI_TX_BUFSIZE     128
-
-// Vendor FIFO size of TX and RX
-#define CFG_TUD_VENDOR_RX_BUFSIZE   64
-#define CFG_TUD_VENDOR_TX_BUFSIZE   64
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif /* _TUSB_CONFIG_H_ */

cores/arduino/USB/USBAPI.h

@@ -85,7 +85,7 @@ public:
 	uint32_t sendControl(int /* ep */, const void *data, uint32_t len) { return sendControl(data, len); }
 	uint32_t recvControl(void *data, uint32_t len);
 	uint32_t sendConfiguration(uint32_t maxlen);
-	bool sendStringDescriptor(const uint8_t *string, uint8_t maxlen);
+	bool sendStringDescriptor(const uint8_t *string, uint32_t maxlen);
 	void initControl(int end);
 	uint8_t SendInterfaces(uint32_t* total);
 	void packMessages(bool val);

cores/arduino/USB/USBCore.cpp

@@ -110,12 +110,12 @@ static EPHandler *epHandlers[7] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL};
 // Send a USB descriptor string. The string is stored as a
 // plain ASCII string but is sent out as UTF-16 with the
 // correct 2-byte prefix
-bool USBDeviceClass::sendStringDescriptor(const uint8_t *string, uint8_t maxlen)
+bool USBDeviceClass::sendStringDescriptor(const uint8_t *string, uint32_t maxlen)
 {
 	if (maxlen < 2)
 		return false;
 
-	uint8_t buffer[maxlen];
+	uint8_t* buffer = (uint8_t*)malloc(maxlen);
 	buffer[0] = strlen((const char*)string) * 2 + 2;
 	buffer[1] = 0x03;
 
@@ -126,7 +126,9 @@ bool USBDeviceClass::sendStringDescriptor(const uint8_t *string, uint8_t maxlen)
 		buffer[i] = 0;
 	}
 
-	return USBDevice.sendControl(buffer, i);
+	bool ret = USBDevice.sendControl(buffer, i);
+	free(buffer);
+	return ret;
 }
 
 bool _dry_run = false;

cores/arduino/WVariant.h

@@ -136,7 +136,7 @@ typedef enum _ETCChannel
   TC7_CH1 =  (12<<8)|(1),
 } ETCChannel ;
 
-#elif defined(__SAMD51P19A__) || defined(__SAMD51P20A__)
+#elif defined(__SAME53N20A__) || defined(__SAME53N19A__) || defined(__SAME54P20A__) || defined(__SAME54P19A__) || defined(__SAME54N20A__) || defined(__SAME54N19A__) || defined(__SAMD51P20A__) || defined(__SAMD51P19A__) || defined(__SAMD51N20A__) || defined(__SAMD51N19A__) || defined(__SAME51N20A__) || defined(__SAME51N19A__)
 
 typedef enum _ETCChannel
 {

cores/arduino/cortex_handlers.c

@@ -133,6 +133,7 @@ void USB_0_Handler               ( void ) __attribute__ ((weak));
 void USB_1_Handler               ( void ) __attribute__ ((weak));
 void USB_2_Handler               ( void ) __attribute__ ((weak));
 void USB_3_Handler               ( void ) __attribute__ ((weak));
+void GMAC_Handler                ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
 void TCC0_0_Handler              ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
 void TCC0_1_Handler              ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
 void TCC0_2_Handler              ( void ) __attribute__ ((weak, alias("Dummy_Handler")));
@@ -195,6 +196,7 @@ extern uint32_t __bss_end__;
 extern uint32_t __StackTop;
 
 /* Exception Table */
+__attribute__ ((used))
 __attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
 {
 	/* Configure Initial Stack Pointer, using linker-generated symbols */
@@ -302,7 +304,7 @@ __attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
 	  (void*) USB_1_Handler,                 /* 81 Universal Serial Bus IRQ 1 */
 	  (void*) USB_2_Handler,                 /* 82 Universal Serial Bus IRQ 2 */
 	  (void*) USB_3_Handler,                 /* 83 Universal Serial Bus IRQ 3 */
-	  (void*) (0UL),
+	  (void*) GMAC_Handler,					 /* 84 Ethernet MAC */
 	  (void*) TCC0_0_Handler,                /* 85 Timer Counter Control 0 IRQ 0 */
 	  (void*) TCC0_1_Handler,                /* 86 Timer Counter Control 0 IRQ 1 */
 	  (void*) TCC0_2_Handler,                /* 87 Timer Counter Control 0 IRQ 2 */
@@ -406,6 +408,7 @@ extern uint32_t __bss_end__;
 extern uint32_t __StackTop;
 
 /* Exception Table */
+__attribute__ ((used))
 __attribute__ ((section(".isr_vector"))) const DeviceVectors exception_table =
 {
   /* Configure Initial Stack Pointer, using linker-generated symbols */

cores/arduino/delay.c

@@ -117,6 +117,17 @@ void SysTick_DefaultHandler(void)
   tickReset();
 }
 
+#if defined(USE_TINYUSB)
+
+// run TinyUSB background task when yield()
+void yield(void)
+{
+  TinyUSB_Device_Task();
+  TinyUSB_Device_FlushCDC();
+}
+
+#endif
+
 #ifdef __cplusplus
 }
 #endif

cores/arduino/main.cpp

@@ -41,7 +41,7 @@ int main( void )
   delay(1);
 
 #if defined(USE_TINYUSB)
-  Adafruit_TinyUSB_Core_init();
+  TinyUSB_Device_Init(0);
 #elif defined(USBCON)
   USBDevice.init();
   USBDevice.attach();
@@ -59,14 +59,3 @@ int main( void )
 
   return 0;
 }
-
-#if defined(USE_TINYUSB)
-
-// run TinyUSB background task when yield()
-extern  "C" void yield(void)
-{
-  tud_task();
-  tud_cdc_write_flush();
-}
-
-#endif

cores/arduino/startup.c

@@ -63,7 +63,7 @@ void SystemInit( void )
    * 1) Enable XOSC32K clock (External on-board 32.768Hz oscillator)
    */
   
-  OSC32KCTRL->XOSC32K.reg = OSC32KCTRL_XOSC32K_ENABLE | OSC32KCTRL_XOSC32K_EN32K | OSC32KCTRL_XOSC32K_EN32K | OSC32KCTRL_XOSC32K_CGM_XT | OSC32KCTRL_XOSC32K_XTALEN;
+  OSC32KCTRL->XOSC32K.reg = OSC32KCTRL_XOSC32K_ENABLE | OSC32KCTRL_XOSC32K_EN1K | OSC32KCTRL_XOSC32K_EN32K | OSC32KCTRL_XOSC32K_CGM_XT | OSC32KCTRL_XOSC32K_XTALEN;
   
   while( (OSC32KCTRL->STATUS.reg & OSC32KCTRL_STATUS_XOSC32KRDY) == 0 ){
     /* Wait for oscillator to be ready */

cores/arduino/wiring_analog.c

@@ -375,6 +375,9 @@ uint32_t analogRead(uint32_t pin)
   syncADC();
   ADC->SWTRIG.bit.START = 1;
 
+  // Waiting for the 1st conversion to complete
+  while (ADC->INTFLAG.bit.RESRDY == 0);
+
   // Clear the Data Ready flag
   ADC->INTFLAG.reg = ADC_INTFLAG_RESRDY;
 

cores/arduino/wiring_digital.c

@@ -39,39 +39,39 @@ void pinMode( uint32_t ulPin, uint32_t ulMode )
   {
     case INPUT:
       // Set pin to input mode
-      PORT->Group[port].PINCFG[pin].reg=(uint8_t)(PORT_PINCFG_INEN) ;
-      PORT->Group[port].DIRCLR.reg = pinMask ;
-    break ;
+      PORT->Group[port].PINCFG[pin].reg = (uint8_t) (PORT_PINCFG_INEN);
+      PORT->Group[port].DIRCLR.reg = pinMask;
+    break;
 
     case INPUT_PULLUP:
       // Set pin to input mode with pull-up resistor enabled
-      PORT->Group[port].PINCFG[pin].reg=(uint8_t)(PORT_PINCFG_INEN|PORT_PINCFG_PULLEN) ;
-      PORT->Group[port].DIRCLR.reg = pinMask ;
+      PORT->Group[port].PINCFG[pin].reg = (uint8_t) (PORT_PINCFG_INEN | PORT_PINCFG_PULLEN);
+      PORT->Group[port].DIRCLR.reg = pinMask;
 
       // Enable pull level (cf '22.6.3.2 Input Configuration' and '22.8.7 Data Output Value Set')
-      PORT->Group[port].OUTSET.reg = pinMask ;
-    break ;
+      PORT->Group[port].OUTSET.reg = pinMask;
+    break;
 
     case INPUT_PULLDOWN:
       // Set pin to input mode with pull-down resistor enabled
-      PORT->Group[port].PINCFG[pin].reg=(uint8_t)(PORT_PINCFG_INEN|PORT_PINCFG_PULLEN) ;
-      PORT->Group[port].DIRCLR.reg = pinMask ;
+      PORT->Group[port].PINCFG[pin].reg = (uint8_t) (PORT_PINCFG_INEN | PORT_PINCFG_PULLEN);
+      PORT->Group[port].DIRCLR.reg = pinMask;
 
       // Enable pull level (cf '22.6.3.2 Input Configuration' and '22.8.6 Data Output Value Clear')
-      PORT->Group[port].OUTCLR.reg = pinMask ;
-    break ;
+      PORT->Group[port].OUTCLR.reg = pinMask;
+    break;
 
     case OUTPUT:
       // enable input, to support reading back values, with pullups disabled
-      PORT->Group[port].PINCFG[pin].reg=(uint8_t)(PORT_PINCFG_INEN) ;
+      PORT->Group[port].PINCFG[pin].reg = (uint8_t) (PORT_PINCFG_INEN | PORT_PINCFG_DRVSTR);
 
       // Set pin to output mode
-      PORT->Group[port].DIRSET.reg = pinMask ;
-    break ;
+      PORT->Group[port].DIRSET.reg = pinMask;
+    break;
 
     default:
       // do nothing
-    break ;
+    break;
   }
 }
 

cores/arduino/wiring_digital.h

@@ -25,6 +25,8 @@
 
 #include "WVariant.h"
 
+typedef int PinStatus;
+
 /**
  * \brief Configures the specified pin to behave either as an input or an output. See the description of digital pins for details.
  *

extras/build_all.py

@@ -1,124 +0,0 @@
-import os
-import glob
-import sys
-import subprocess
-import time
-import argparse
-
-FQBN_PREFIX='adafruit:samd:adafruit_'
-
-
-parser = argparse.ArgumentParser(
-    description='python wrapper for adafruit arduino CI workflows',
-    allow_abbrev=False
-    )
-parser.add_argument(
-    '--all_warnings', '--Wall',
-    action='store_true',
-    help='build with all warnings enabled (`--warnings all`)',
-    )
-parser.add_argument(
-    '--warnings_do_not_cause_job_failure',
-    action='store_true',
-    help='failed builds will be listed as failed, but not cause job to exit with an error status',
-    )
-parser.add_argument(
-    'build_boards',
-    metavar='board',
-    nargs='*',
-    help='list of boards to be built -- Note that the fqbn is created by prepending "{}"'.format(FQBN_PREFIX),
-    default= [ 'metro_m0', 'metro_m4', 'circuitplayground_m0' ]
-    )
-args = parser.parse_args()
-
-exit_status = 0
-success_count = 0
-fail_count = 0
-skip_count = 0
-build_format = '| {:22} | {:30} | {:9} '
-build_separator = '-' * 80
-
-def errorOutputFilter(line: str):
-    if len(line) == 0:
-        return False
-    if line.isspace(): # Note: empty string does not match here!
-        return False
-    # TODO: additional items to remove?
-    return True
-
-def build_examples(variant: str):
-    global args, exit_status, success_count, fail_count, skip_count, build_format, build_separator
-
-    print('\n')
-    print(build_separator)
-    print('| {:^76} |'.format('Board ' + variant))
-    print(build_separator)
-    print((build_format + '| {:6} |').format('Library', 'Example', 'Result', 'Time'))
-    print(build_separator)
-    
-    fqbn = "{}{}".format(FQBN_PREFIX, variant)
-
-    for sketch in glob.iglob('libraries/**/*.ino', recursive=True):
-        start_time = time.monotonic()
-
-        # Skip if contains: ".board.test.skip" or ".all.test.skip"
-        # Skip if not contains: ".board.test.only" for a specific board
-        sketchdir = os.path.dirname(sketch)
-        if os.path.exists(sketchdir + '/.all.test.skip') or os.path.exists(sketchdir + '/.' + variant + '.test.skip'):
-            success = "\033[33mskipped\033[0m  "
-        elif glob.glob(sketchdir+"/.*.test.only") and not os.path.exists(sketchdir + '/.build.' + variant):
-            success = "\033[33mskipped\033[0m  "
-        else:
-            # TODO - preferably, would have STDERR show up in **both** STDOUT and STDERR.
-            #        preferably, would use Python logging handler to get both distinct outputs and one merged output
-            #        for now, split STDERR when building with all warnings enabled, so can detect warning/error output.
-            if args.all_warnings:
-                build_result = subprocess.run("arduino-cli compile --warnings all --fqbn {} {}".format(fqbn, sketch), shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-            else:
-                build_result = subprocess.run("arduino-cli compile --warnings default --fqbn {} {}".format(fqbn, sketch), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
-
-            # get stderr into a form where len(warningLines) indicates a true warning was output to stderr
-            warningLines = [];
-            if args.all_warnings and build_result.stderr:
-                tmpWarningLines = build_result.stderr.decode("utf-8").splitlines()
-                warningLines = list(filter(errorOutputFilter, (tmpWarningLines)))
-
-            if build_result.returncode != 0:
-                exit_status = build_result.returncode
-                success = "\033[31mfailed\033[0m   "
-                fail_count += 1
-            elif len(warningLines) != 0:
-                if not args.warnings_do_not_cause_job_failure:
-                    exit_status = -1
-                success = "\033[31mwarnings\033[0m "
-                fail_count += 1
-            else:
-                success = "\033[32msucceeded\033[0m"
-                success_count += 1
-
-        build_duration = time.monotonic() - start_time
-
-        print((build_format + '| {:5.2f}s |').format(sketch.split(os.path.sep)[1], os.path.basename(sketch), success, build_duration))
-
-        if success != "\033[33mskipped\033[0m  ":
-            if build_result.returncode != 0:
-                print(build_result.stdout.decode("utf-8"))
-                if (build_result.stderr):
-                    print(build_result.stderr.decode("utf-8"))
-            if len(warningLines) != 0:
-                for line in warningLines:
-                    print(line)
-        else:
-            skip_count += 1
-
-build_time = time.monotonic()
-
-for board in args.build_boards:
-    build_examples(board)
-
-print(build_separator)
-build_time = time.monotonic() - build_time
-print("Build Summary: {} \033[32msucceeded\033[0m, {} \033[31mfailed\033[0m, {} \033[33mskipped\033[0m and took {:.2f}s".format(success_count, fail_count, skip_count, build_time))
-print(build_separator)
-
-sys.exit(exit_status)

libraries/Adafruit_TinyUSB_Arduino

@@ -0,0 +1 @@
+Subproject commit c953968c468218d8968138b5ed8482fa565373df

libraries/Adafruit_ZeroDMA

@@ -0,0 +1 @@
+Subproject commit acc5dadb458b2c329757a61dc4f18dda945a0c36

libraries/Adafruit_ZeroDMA/Adafruit_ZeroDMA.cpp

@@ -1,654 +0,0 @@
-#include <Adafruit_ZeroDMA.h>
-#include <malloc.h> // memalign() function
-
-#include "utility/dma.h"
-static volatile uint32_t _channelMask = 0; // Bitmask of allocated channels
-
-// DMA descriptor list entry point (and writeback buffer) per channel
-__attribute__((__aligned__(16))) static DmacDescriptor // 128 bit alignment
-  _descriptor[DMAC_CH_NUM] SECTION_DMAC_DESCRIPTOR,
-  _writeback[DMAC_CH_NUM]  SECTION_DMAC_DESCRIPTOR;
-
-// Pointer to ZeroDMA object for each channel is needed for the
-// ISR (in C, outside of class context) to access callbacks.
-static Adafruit_ZeroDMA *_dmaPtr[DMAC_CH_NUM] = { 0 }; // Init to NULL
-
-// Adapted from ASF3 interrupt_sam_nvic.c:
-
-static volatile unsigned long cpu_irq_critical_section_counter = 0;
-static volatile unsigned char cpu_irq_prev_interrupt_state     = 0;
-
-static void cpu_irq_enter_critical(void) {
-    if(!cpu_irq_critical_section_counter) {
-        if(__get_PRIMASK() == 0) { // IRQ enabled?
-            __disable_irq();   // Disable it
-            __DMB();
-            cpu_irq_prev_interrupt_state = 1;
-        } else {
-            // Make sure the to save the prev state as false
-            cpu_irq_prev_interrupt_state = 0;
-        }
-    }
-
-    cpu_irq_critical_section_counter++;
-}
-
-static void cpu_irq_leave_critical(void) {
-    // Check if the user is trying to leave a critical section
-    // when not in a critical section
-    if(cpu_irq_critical_section_counter > 0) {
-        cpu_irq_critical_section_counter--;
-
-        // Only enable global interrupts when the counter
-        // reaches 0 and the state of the global interrupt flag
-        // was enabled when entering critical state */
-        if((!cpu_irq_critical_section_counter) &&
-            cpu_irq_prev_interrupt_state) {
-                __DMB();
-                __enable_irq();
-        }
-    }
-}
-
-// CONSTRUCTOR -------------------------------------------------------------
-
-// Constructor initializes Adafruit_ZeroDMA basics but does NOT allocate a
-// DMA channel (that's done in allocate()) or start a job (that's done in
-// startJob()).  This is because constructors in a global context are called
-// before a sketch's setup() function, which may have some other hardware
-// initialization of its own, don't want it clobbering us.
-Adafruit_ZeroDMA::Adafruit_ZeroDMA(void) {
-    channel           = 0xFF;  // Channel not yet allocated
-    jobStatus         = DMA_STATUS_OK;
-    hasDescriptors    = false; // No descriptors allocated yet
-    loopFlag          = false;
-    peripheralTrigger = 0;     // Software trigger only by default
-    triggerAction     = DMA_TRIGGER_ACTON_TRANSACTION;
-    memset(callback, 0, sizeof(callback));
-}
-
-// TODO: add destructor? Should stop job, delete descriptors, free channel.
-
-// INTERRUPT SERVICE ROUTINE -----------------------------------------------
-
-// This is a C function that exists outside the Adafruit_ZeroDMA context.
-// DMA channel number is determined from the INTPEND register, from this
-// we get a ZeroDMA object pointer through the _dmaPtr[] array.
-// (It's done this way because jobStatus and callback[] are protected
-// elements in the ZeroDMA object -- we can't touch them in C, but the
-// next function after this, being part of the ZeroDMA class, can.)
-
-#ifdef __SAMD51__
-void DMAC_0_Handler(void) {
-#else
-void DMAC_Handler(void) {
-#endif
-    cpu_irq_enter_critical();
-
-    uint8_t channel = DMAC->INTPEND.bit.ID; // Channel # causing interrupt
-    if(channel < DMAC_CH_NUM) {
-        Adafruit_ZeroDMA *dma;
-        if((dma = _dmaPtr[channel])) { // -> Channel's ZeroDMA object
-#ifdef __SAMD51__
-            // Call IRQ handler with channel #
-            dma->_IRQhandler(channel);
-#else
-            DMAC->CHID.bit.ID = channel;
-            // Call IRQ handler with interrupt flag(s)
-            dma->_IRQhandler(DMAC->CHINTFLAG.reg);
-#endif
-        }
-    }
-
-    cpu_irq_leave_critical();
-}
-
-#ifdef __SAMD51__
-void DMAC_1_Handler(void) __attribute__((weak, alias("DMAC_0_Handler")));
-void DMAC_2_Handler(void) __attribute__((weak, alias("DMAC_0_Handler")));
-void DMAC_3_Handler(void) __attribute__((weak, alias("DMAC_0_Handler")));
-void DMAC_4_Handler(void) __attribute__((weak, alias("DMAC_0_Handler")));
-#endif
-
-void Adafruit_ZeroDMA::_IRQhandler(uint8_t flags) {
-#ifdef __SAMD51__
-    // 'flags' is initially passed in as channel number,
-    // from which we look up the actual interrupt flags...
-    flags = DMAC->Channel[flags].CHINTFLAG.reg;
-#endif
-    if(flags & DMAC_CHINTENCLR_TERR) {
-        // Clear error flag
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHINTFLAG.reg = DMAC_CHINTENCLR_TERR;
-#else
-        DMAC->CHINTFLAG.reg = DMAC_CHINTENCLR_TERR;
-#endif
-        jobStatus           = DMA_STATUS_ERR_IO;
-        if(callback[DMA_CALLBACK_TRANSFER_ERROR]) {
-            callback[DMA_CALLBACK_TRANSFER_ERROR](this);
-        }
-    } else if(flags & DMAC_CHINTENCLR_TCMPL) {
-        // Clear transfer complete flag
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHINTFLAG.reg = DMAC_CHINTENCLR_TCMPL;
-#else
-        DMAC->CHINTFLAG.reg = DMAC_CHINTENCLR_TCMPL;
-#endif
-        jobStatus           = DMA_STATUS_OK;
-        if(callback[DMA_CALLBACK_TRANSFER_DONE]) {
-            callback[DMA_CALLBACK_TRANSFER_DONE](this);
-        }
-    } else if(flags & DMAC_CHINTENCLR_SUSP) {
-        // Clear channel suspend flag
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHINTFLAG.reg = DMAC_CHINTENCLR_SUSP;
-#else
-        DMAC->CHINTFLAG.reg = DMAC_CHINTENCLR_SUSP;
-#endif
-        jobStatus           = DMA_STATUS_SUSPEND;
-        if(callback[DMA_CALLBACK_CHANNEL_SUSPEND]) {
-            callback[DMA_CALLBACK_CHANNEL_SUSPEND](this);
-        }
-    }
-}
-
-// DMA CHANNEL FUNCTIONS ---------------------------------------------------
-
-// Allocates channel for ZeroDMA object
-ZeroDMAstatus Adafruit_ZeroDMA::allocate(void) {
-
-    if(channel < DMAC_CH_NUM) return DMA_STATUS_OK; // Already alloc'd!
-
-    // Find index of first free DMA channel.  As currently written,
-    // this "does not play well with others" as it assumes _channelMask
-    // is the final arbiter of channels in use (this is true only within
-    // this library -- but other DMA-driven code may have allocated its
-    // own channel(s) elsewhere, sometimes with an equally broken
-    // approach).  A possible alternate approach, I haven't tested this
-    // yet, might be to loop through each channel, set DMAC->CHID.bit.ID
-    // and then test whether CHCTRLA.bit.ENABLE is set?  But for now...
-    for(channel=0; (channel < DMAC_CH_NUM) &&
-      (_channelMask & (1 << channel)); channel++);
-    // Doesn't help that code later does a software reset of the DMA
-    // controller, which would blow out other DMA-using libraries
-    // anyway (or they're just as likely to blow out this one).
-    // I think it's just an all-or-nothing affair...use one library
-    // for DMA everything, never mix and match.
-
-    if(channel >= DMAC_CH_NUM) { // No free channel!
-        return DMA_STATUS_ERR_NOT_FOUND;
-    }
-
-    cpu_irq_enter_critical();
-
-    if(!_channelMask) { // No channels allocated yet; initialize DMA!
-#if (SAML21) || (SAML22) || (SAMC20) || (SAMC21)
-        PM->AHBMASK.bit.DMAC_       = 1;
-#elif defined(__SAMD51__)
-        MCLK->AHBMASK.bit.DMAC_     = 1; // Initialize DMA clocks
-#else
-        PM->AHBMASK.bit.DMAC_       = 1; // Initialize DMA clocks
-        PM->APBBMASK.bit.DMAC_      = 1;
-#endif
-        DMAC->CTRL.bit.DMAENABLE    = 0; // Disable DMA controller
-        DMAC->CTRL.bit.SWRST        = 1; // Perform software reset
-
-        // Initialize descriptor list addresses
-        DMAC->BASEADDR.bit.BASEADDR = (uint32_t)_descriptor;
-        DMAC->WRBADDR.bit.WRBADDR   = (uint32_t)_writeback;
-        memset(_descriptor, 0, sizeof(_descriptor));
-        memset(_writeback , 0, sizeof(_writeback));
-
-        // Re-enable DMA controller with all priority levels
-        DMAC->CTRL.reg = DMAC_CTRL_DMAENABLE | DMAC_CTRL_LVLEN(0xF);
-
-        // Enable DMA interrupt at lowest priority
-#ifdef __SAMD51__
-        IRQn_Type irqs[] = { DMAC_0_IRQn, DMAC_1_IRQn, DMAC_2_IRQn,
-                             DMAC_3_IRQn, DMAC_4_IRQn };
-        for(uint8_t i=0; i<(sizeof irqs / sizeof irqs[0]); i++) {
-            NVIC_EnableIRQ(irqs[i]);
-            NVIC_SetPriority(irqs[i], (1<<__NVIC_PRIO_BITS)-1);
-        }
-#else
-        NVIC_EnableIRQ(DMAC_IRQn);
-        NVIC_SetPriority(DMAC_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
-#endif
-    }
-
-    _channelMask    |= 1 << channel; // Mark channel as allocated
-    _dmaPtr[channel] = this;         // Channel-index-to-object pointer
-
-    // Reset the allocated channel
-#ifdef __SAMD51__
-    DMAC->Channel[channel].CHCTRLA.bit.ENABLE  = 0;
-    DMAC->Channel[channel].CHCTRLA.bit.SWRST   = 1;
-#else
-    DMAC->CHID.bit.ID         = channel;
-    DMAC->CHCTRLA.bit.ENABLE  = 0;
-    DMAC->CHCTRLA.bit.SWRST   = 1;
-#endif
-
-    // Clear software trigger
-    DMAC->SWTRIGCTRL.reg     &= ~(1 << channel);
-
-    // Configure default behaviors
-#ifdef __SAMD51__
-    DMAC->Channel[channel].CHPRILVL.bit.PRILVL = 0;
-    DMAC->Channel[channel].CHCTRLA.bit.TRIGSRC = peripheralTrigger;
-    DMAC->Channel[channel].CHCTRLA.bit.TRIGACT = triggerAction;
-    DMAC->Channel[channel].CHCTRLA.bit.BURSTLEN =
-      DMAC_CHCTRLA_BURSTLEN_SINGLE_Val; // Single-beat burst length
-#else
-    DMAC->CHCTRLB.bit.LVL     = 0;
-    DMAC->CHCTRLB.bit.TRIGSRC = peripheralTrigger;
-    DMAC->CHCTRLB.bit.TRIGACT = triggerAction;
-#endif
-
-    cpu_irq_leave_critical();
-
-    return DMA_STATUS_OK;
-}
-
-void Adafruit_ZeroDMA::setPriority(dma_priority pri) const {
-#ifdef __SAMD51__
-    DMAC->Channel[channel].CHPRILVL.bit.PRILVL = pri;
-#else
-    DMAC->CHCTRLB.bit.LVL = pri;
-#endif
-}
-
-// Deallocate DMA channel
-// TODO: should this delete/deallocate the descriptor list?
-ZeroDMAstatus Adafruit_ZeroDMA::free(void) {
-
-    ZeroDMAstatus status = DMA_STATUS_OK;
-
-    cpu_irq_enter_critical(); // jobStatus is volatile
-
-    if(jobStatus == DMA_STATUS_BUSY) {
-        status = DMA_STATUS_BUSY; // Can't leave when busy
-    } else if((channel < DMAC_CH_NUM) && (_channelMask & (1 << channel))) {
-        // Valid in-use channel; release it
-        _channelMask &= ~(1 << channel); // Clear bit
-        if(!_channelMask) {              // No more channels in use?
-#ifdef __SAMD51__
-            NVIC_DisableIRQ(DMAC_0_IRQn); // Disable DMA interrupt
-            DMAC->CTRL.bit.DMAENABLE = 0; // Disable DMA
-            MCLK->AHBMASK.bit.DMAC_  = 0; // Disable DMA clock
-#else
-            NVIC_DisableIRQ(DMAC_IRQn);   // Disable DMA interrupt
-            DMAC->CTRL.bit.DMAENABLE = 0; // Disable DMA
-            PM->APBBMASK.bit.DMAC_   = 0; // Disable DMA clocks
-            PM->AHBMASK.bit.DMAC_    = 0;
-#endif
-        }
-        _dmaPtr[channel] = NULL;
-        channel          = 0xFF;
-    } else {
-        status = DMA_STATUS_ERR_NOT_INITIALIZED; // Channel not in use
-    }
-
-    cpu_irq_leave_critical();
-
-    return status;
-}
-
-// Start DMA transfer job.  Channel and descriptors should be allocated
-// before calling this.
-ZeroDMAstatus Adafruit_ZeroDMA::startJob(void) {
-    ZeroDMAstatus status = DMA_STATUS_OK;
-
-    cpu_irq_enter_critical(); // Job status is volatile
-
-    if(jobStatus == DMA_STATUS_BUSY) {
-        status = DMA_STATUS_BUSY; // Resource is busy
-    } else if(channel >= DMAC_CH_NUM) {
-        status = DMA_STATUS_ERR_NOT_INITIALIZED; // Channel not in use
-    } else if(!hasDescriptors || (_descriptor[channel].BTCNT.reg <= 0)) {
-        status = DMA_STATUS_ERR_INVALID_ARG; // Bad transfer size
-    } else {
-        uint8_t i, interruptMask = 0;
-        for(i=0; i<DMA_CALLBACK_N; i++) {
-            if(callback[i]) interruptMask |= (1 << i);
-        }
-        jobStatus            = DMA_STATUS_BUSY;
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHINTENSET.reg =
-          DMAC_CHINTENSET_MASK &  interruptMask;
-        DMAC->Channel[channel].CHINTENCLR.reg =
-          DMAC_CHINTENCLR_MASK & ~interruptMask;
-        DMAC->Channel[channel].CHCTRLA.bit.ENABLE = 1;
-#else
-        DMAC->CHID.bit.ID    = channel;
-        DMAC->CHINTENSET.reg = DMAC_CHINTENSET_MASK &  interruptMask;
-        DMAC->CHINTENCLR.reg = DMAC_CHINTENCLR_MASK & ~interruptMask;
-        DMAC->CHCTRLA.bit.ENABLE = 1; // Enable the transfer channel
-#endif
-    }
-
-    cpu_irq_leave_critical();
-
-    return status;
-}
-
-// Set and enable callback function for ZeroDMA object. This can be called
-// before or after channel and/or descriptors are allocated, but needs
-// to be called before job is started.
-void Adafruit_ZeroDMA::setCallback(
-  void (*cb)(Adafruit_ZeroDMA *), dma_callback_type type) {
-    callback[type] = cb;
-}
-
-// Suspend/resume don't quite do what I thought -- avoid using for now.
-void Adafruit_ZeroDMA::suspend(void) const {
-    cpu_irq_enter_critical();
-#ifdef __SAMD51__
-    DMAC->Channel[channel].CHCTRLB.reg |= DMAC_CHCTRLB_CMD_SUSPEND;
-#else
-    DMAC->CHID.bit.ID  = channel;
-    DMAC->CHCTRLB.reg |= DMAC_CHCTRLB_CMD_SUSPEND;
-#endif
-    cpu_irq_leave_critical();
-}
-
-#define MAX_JOB_RESUME_COUNT 10000
-void Adafruit_ZeroDMA::resume(void) {
-    cpu_irq_enter_critical(); // jobStatus is volatile
-    if(jobStatus == DMA_STATUS_SUSPEND) {
-        int      count;
-        uint32_t bitMask   = 1 << channel;
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHCTRLB.reg |= DMAC_CHCTRLB_CMD_RESUME;
-#else
-        DMAC->CHID.bit.ID  = channel;
-        DMAC->CHCTRLB.reg |= DMAC_CHCTRLB_CMD_RESUME;
-#endif
-
-        for(count = 0; (count < MAX_JOB_RESUME_COUNT) &&
-          !(DMAC->BUSYCH.reg & bitMask); count++);
-
-        jobStatus = (count < MAX_JOB_RESUME_COUNT) ?
-          DMA_STATUS_BUSY : DMA_STATUS_ERR_TIMEOUT;
-    }
-    cpu_irq_leave_critical();
-}
-
-// Abort is OK though.
-void Adafruit_ZeroDMA::abort(void) {
-    if(channel <= DMAC_CH_NUM) {
-        cpu_irq_enter_critical();
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHCTRLA.reg = 0; // Disable channel
-#else
-        DMAC->CHID.bit.ID = channel; // Select channel
-        DMAC->CHCTRLA.reg = 0;       // Disable
-#endif
-        jobStatus         = DMA_STATUS_ABORTED;
-        cpu_irq_leave_critical();
-    }
-}
-
-// Set DMA peripheral trigger.
-// This can be done before or after channel is allocated.
-void Adafruit_ZeroDMA::setTrigger(uint8_t trigger) {
-    peripheralTrigger = trigger; // Save value for allocate()
-
-    // If channel already allocated, configure peripheral trigger
-    // (old lib required configure before alloc -- either way OK now)
-    if(channel < DMAC_CH_NUM) {
-        cpu_irq_enter_critical();
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHCTRLA.bit.TRIGSRC = trigger;
-#else
-        DMAC->CHID.bit.ID         = channel;
-        DMAC->CHCTRLB.bit.TRIGSRC = trigger;
-#endif
-        cpu_irq_leave_critical();
-    }
-}
-
-// Set DMA trigger action.
-// This can be done before or after channel is allocated.
-void Adafruit_ZeroDMA::setAction(dma_transfer_trigger_action action) {
-    triggerAction = action; // Save value for allocate()
-
-    // If channel already allocated, configure trigger action
-    // (old lib required configure before alloc -- either way OK now)
-    if(channel < DMAC_CH_NUM) {
-        cpu_irq_enter_critical();
-#ifdef __SAMD51__
-        DMAC->Channel[channel].CHCTRLA.bit.TRIGACT = action;
-#else
-        DMAC->CHID.bit.ID         = channel;
-        DMAC->CHCTRLB.bit.TRIGACT = action;
-#endif
-        cpu_irq_leave_critical();
-    }
-}
-
-// Issue software trigger. Channel must be allocated & descriptors added!
-void Adafruit_ZeroDMA::trigger(void) const {
-    if((channel <= DMAC_CH_NUM) & hasDescriptors) {
-        DMAC->SWTRIGCTRL.reg |= (1 << channel);
-    }
-}
-
-// Returns true if DMA transfer in progress.
-bool Adafruit_ZeroDMA::isActive(void) const {
-    return _writeback[channel].BTCTRL.bit.VALID;
-}
-
-// DMA DESCRIPTOR FUNCTIONS ------------------------------------------------
-
-// Allocates a new DMA descriptor (if needed) and appends it to the
-// channel's descriptor list.  Returns pointer to DmacDescriptor,
-// or NULL on various errors.  You'll want to keep the pointer for
-// later if you need to modify or free the descriptor.
-// Channel must be allocated first!
-DmacDescriptor *Adafruit_ZeroDMA::addDescriptor(
-  void           *src,
-  void           *dst,
-  uint32_t        count,
-  dma_beat_size   size,
-  bool            srcInc,
-  bool            dstInc,
-  uint32_t        stepSize,
-  bool            stepSel) {
-
-    // Channel must be allocated first
-       if(channel >= DMAC_CH_NUM) return NULL;
-
-    // Can't do while job's busy
-    if(jobStatus == DMA_STATUS_BUSY) return NULL;
-
-    DmacDescriptor *desc;
-
-    // Scan descriptor list to find last entry.  If an entry's
-    // DESCADDR value is 0, that's the end of the list and it's
-    // currently un-looped.  If the DESCADDR value is the same
-    // as the first entry, that's the end of the list and it's
-    // looped.  Either way, set the last entry's DESCADDR value
-    // to the new descriptor, and the descriptor's own DESCADDR
-    // will be set later either to 0 or the list head.
-    if(hasDescriptors) {
-        // DMA descriptors must be 128-bit (16 byte) aligned.
-        // memalign() is considered 'obsolete' but it's replacements
-        // (aligned_alloc() or posix_memalign()) are not currently
-        // available in the version of ARM GCC in use, but this is,
-        // so here we are.
-        if(!(desc = (DmacDescriptor *)memalign(16, sizeof(DmacDescriptor)))) {
-            return NULL;
-        }
-        DmacDescriptor *prev = &_descriptor[channel];
-        while(prev->DESCADDR.reg &&
-             (prev->DESCADDR.reg != (uint32_t)&_descriptor[channel])) {
-            prev = (DmacDescriptor *)prev->DESCADDR.reg;
-        }
-        prev->DESCADDR.reg = (uint32_t)desc;
-    } else {
-        desc = &_descriptor[channel];
-    }
-    hasDescriptors = true;
-
-    uint8_t bytesPerBeat; // Beat transfer size IN BYTES
-    switch(size) {
-       default:                  bytesPerBeat = 1; break;
-       case DMA_BEAT_SIZE_HWORD: bytesPerBeat = 2; break;
-       case DMA_BEAT_SIZE_WORD:  bytesPerBeat = 4; break;
-    }
-
-    desc->BTCTRL.bit.VALID     = true;
-    desc->BTCTRL.bit.EVOSEL    = DMA_EVENT_OUTPUT_DISABLE;
-    desc->BTCTRL.bit.BLOCKACT  = DMA_BLOCK_ACTION_NOACT;
-    desc->BTCTRL.bit.BEATSIZE  = size;
-    desc->BTCTRL.bit.SRCINC    = srcInc;
-    desc->BTCTRL.bit.DSTINC    = dstInc;
-    desc->BTCTRL.bit.STEPSEL   = stepSel;
-    desc->BTCTRL.bit.STEPSIZE  = stepSize;
-    desc->BTCNT.reg            = count;
-    desc->SRCADDR.reg          = (uint32_t)src;
-
-    if(srcInc) {
-        if(stepSel) {
-            desc->SRCADDR.reg += bytesPerBeat * count * (1 << stepSize);
-        } else {
-            desc->SRCADDR.reg += bytesPerBeat * count;
-        }
-    }
-
-    desc->DSTADDR.reg          = (uint32_t)dst;
-
-    if(dstInc) {
-        if(!stepSel) {
-            desc->DSTADDR.reg += bytesPerBeat * count * (1 << stepSize);
-        } else {
-            desc->DSTADDR.reg += bytesPerBeat * count;
-        }
-    }
-
-    desc->DESCADDR.reg = loopFlag ? (uint32_t)&_descriptor[channel] : 0;
-
-    return desc;
-}
-
-// Modify DMA descriptor with a new source address, destination address &
-// block transfer count.  All other attributes (including increment enables,
-// etc.) are unchanged.  Mostly for changing the data being pushed to a
-// peripheral (DAC, SPI, whatev.)
-void Adafruit_ZeroDMA::changeDescriptor(DmacDescriptor *desc,
-  void *src, void *dst, uint32_t count) {
-
-    uint8_t bytesPerBeat; // Beat transfer size IN BYTES
-    switch(desc->BTCTRL.bit.BEATSIZE) {
-       default:                  bytesPerBeat = 1; break;
-       case DMA_BEAT_SIZE_HWORD: bytesPerBeat = 2; break;
-       case DMA_BEAT_SIZE_WORD:  bytesPerBeat = 4; break;
-    }
-
-    if(count) desc->BTCNT.reg = count;
-
-    if(src) {
-        desc->SRCADDR.reg = (uint32_t)src;
-        if(desc->BTCTRL.bit.SRCINC) {
-            if(desc->BTCTRL.bit.STEPSEL) {
-                desc->SRCADDR.reg += desc->BTCNT.reg *
-                  bytesPerBeat * (1 << desc->BTCTRL.bit.STEPSIZE);
-            } else {
-                desc->SRCADDR.reg += desc->BTCNT.reg * bytesPerBeat;
-            }
-        }
-    }
-
-    if(dst) {
-        desc->DSTADDR.reg = (uint32_t)dst;
-        if(desc->BTCTRL.bit.DSTINC) {
-            if(!desc->BTCTRL.bit.STEPSEL) {
-                desc->DSTADDR.reg += desc->BTCNT.reg *
-                  bytesPerBeat * (1 << desc->BTCTRL.bit.STEPSIZE);
-            } else {
-                desc->DSTADDR.reg += desc->BTCNT.reg * bytesPerBeat;
-            }
-        }
-    }
-
-// I think this code is here by accident -- disabling for now.
-#if 0
-    cpu_irq_enter_critical();
-    jobStatus          = DMA_STATUS_OK;
-#ifdef __SAMD51__
-    DMAC->Channel[channel].CHCTRLA.bit.ENABLE = 1;
-#else
-    DMAC->CHID.bit.ID  = channel;
-    DMAC->CHCTRLA.reg |= DMAC_CHCTRLA_ENABLE;
-#endif
-    cpu_irq_leave_critical();
-#endif
-}
-
-// TODO: delete descriptor, delete whole descriptor chain
-
-// Select whether channel's descriptor list should repeat or not.
-// This can be done before or after channel & any descriptors are allocated.
-void Adafruit_ZeroDMA::loop(boolean flag) {
-    // The loop selection is 'sticky' -- that is, you can enable or
-    // disable looping before a descriptor list is built, or after
-    // the fact.  This requires some extra steps in the library code
-    // but avoids a must-do-in-X-order constraint on user.
-    loopFlag = flag;
-
-    if(hasDescriptors) { // Descriptor list already started?
-        // Scan descriptor list to find last entry.  If an entry's
-        // DESCADDR value is 0, that's the end of the list and it's
-        // currently un-looped.  If the DESCADDR value is the same
-        // as the first entry, that's the end of the list and it's
-        // already looped.
-        DmacDescriptor *desc = &_descriptor[channel];
-        while(desc->DESCADDR.reg &&
-          (desc->DESCADDR.reg != (uint32_t)&_descriptor[channel])) {
-            desc = (DmacDescriptor *)desc->DESCADDR.reg;
-        }
-        // Loop or unloop descriptor list as appropriate
-        desc->DESCADDR.reg = loopFlag ?  (uint32_t)&_descriptor[channel] : 0;
-    }
-}
-
-// MISCELLANY --------------------------------------------------------------
-
-void Adafruit_ZeroDMA::printStatus(ZeroDMAstatus s) const {
-    if(s == DMA_STATUS_JOBSTATUS) s = jobStatus;
-    Serial.print("Status: ");
-    switch(s) {
-       case DMA_STATUS_OK:
-            Serial.println("OK");
-            break;
-       case DMA_STATUS_ERR_NOT_FOUND:
-            Serial.println("NOT FOUND");
-            break;
-       case DMA_STATUS_ERR_NOT_INITIALIZED:
-            Serial.println("NOT INITIALIZED");
-            break;
-       case DMA_STATUS_ERR_INVALID_ARG:
-            Serial.println("INVALID ARGUMENT");
-            break;
-       case DMA_STATUS_ERR_IO:
-            Serial.println("IO ERROR");
-            break;
-       case DMA_STATUS_ERR_TIMEOUT:
-            Serial.println("TIMEOUT");
-            break;
-       case DMA_STATUS_BUSY:
-            Serial.println("BUSY");
-            break;
-       case DMA_STATUS_SUSPEND:
-            Serial.println("SUSPENDED");
-            break;
-       case DMA_STATUS_ABORTED:
-            Serial.println("ABORTED");
-            break;
-       default:
-            Serial.print("Unknown 0x");
-            Serial.println((int)s);
-            break;
-    }
-}

libraries/Adafruit_ZeroDMA/Adafruit_ZeroDMA.h

@@ -1,66 +0,0 @@
-#ifndef _ADAFRUIT_ZERODMA_H_
-#define _ADAFRUIT_ZERODMA_H_
-
-#include "Arduino.h"
-#include "utility/dma.h"
-
-// Status codes returned by some DMA functions and/or held in
-// a channel's jobStatus variable.
-enum ZeroDMAstatus {
-    DMA_STATUS_OK = 0,
-    DMA_STATUS_ERR_NOT_FOUND,
-    DMA_STATUS_ERR_NOT_INITIALIZED,
-    DMA_STATUS_ERR_INVALID_ARG,
-    DMA_STATUS_ERR_IO,
-    DMA_STATUS_ERR_TIMEOUT,
-    DMA_STATUS_BUSY,
-    DMA_STATUS_SUSPEND,
-    DMA_STATUS_ABORTED,
-    DMA_STATUS_JOBSTATUS = -1 // For printStatus() function
-};
-
-class Adafruit_ZeroDMA {
- public:
-  Adafruit_ZeroDMA(void);
-
-  // DMA channel functions
-  ZeroDMAstatus   allocate(void), // Allocates DMA channel
-                  startJob(void),
-                  free(void);     // Deallocates DMA channel
-  void            trigger(void) const,
-                  setTrigger(uint8_t trigger),
-                  setAction(dma_transfer_trigger_action action),
-                  setCallback(void (*callback)(Adafruit_ZeroDMA *) = NULL,
-                    dma_callback_type type = DMA_CALLBACK_TRANSFER_DONE),
-                  loop(boolean flag),
-                  suspend(void) const,
-                  resume(void),
-                  abort(void),
-                  setPriority(dma_priority pri) const,
-                  printStatus(ZeroDMAstatus s = DMA_STATUS_JOBSTATUS) const;
-  uint8_t         getChannel(void) const { return channel; }
-
-  // DMA descriptor functions
-  DmacDescriptor *addDescriptor(void *src, void *dst, uint32_t count = 0,
-                    dma_beat_size size = DMA_BEAT_SIZE_BYTE,
-                    bool srcInc = true, bool dstInc = true, 
-                    uint32_t stepSize = DMA_ADDRESS_INCREMENT_STEP_SIZE_1, 
-                    bool stepSel = DMA_STEPSEL_DST);
-  void            changeDescriptor(DmacDescriptor *d, void *src = NULL,
-                    void *dst = NULL, uint32_t count = 0);
-  bool            isActive(void) const;
-
-  void            _IRQhandler(uint8_t flags); // DO NOT TOUCH
-
-
- protected:  
-  uint8_t                     channel;
-  volatile enum ZeroDMAstatus jobStatus;
-  bool                        hasDescriptors;
-  bool                        loopFlag;
-  uint8_t                     peripheralTrigger;
-  dma_transfer_trigger_action triggerAction;
-  void                      (*callback[DMA_CALLBACK_N])(Adafruit_ZeroDMA *);
-};
-
-#endif // _ADAFRUIT_ZERODMA_H_

libraries/Adafruit_ZeroDMA/LICENSE

@@ -1,22 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2016 Adafruit Industries
-
-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.
-

libraries/Adafruit_ZeroDMA/README.md

@@ -1,6 +0,0 @@
-# Adafruit_ZeroDMA
-DMA helper/wrapped for ATSAMD21 such as Arduino Zero & Feather M0
-
-Current version of this library no longer requires Adafruit_ASFcore as a prerequisite. However...IT BREAKS COMPATIBILITY WITH PRIOR VERSIONS. Function names, calling sequence and return types/values have changed. See examples!
-
-Item(s) in 'utility' directory are much pared-down derivatives of Atmel ASFcore 3 files. Please keep their original copyright and license intact when editing.

libraries/Adafruit_ZeroDMA/examples/zerodma_memcpy/zerodma_memcpy.ino

@@ -1,95 +0,0 @@
-// Simple ZeroDMA example -- an equivalent to the memcpy() function.
-// Decause it uses DMA, unlike memcpy(), your code could be doing other
-// things simultaneously while the copy operation runs.
-
-#include <Adafruit_ZeroDMA.h>
-#include "utility/dma.h"
-
-Adafruit_ZeroDMA myDMA;
-ZeroDMAstatus    stat; // DMA status codes returned by some functions
-
-// The memory we'll be moving:
-#define DATA_LENGTH 1024
-uint8_t source_memory[DATA_LENGTH],
-        destination_memory[DATA_LENGTH];
-
-volatile bool transfer_is_done = false; // Done yet?
-
-// Callback for end-of-DMA-transfer
-void dma_callback(Adafruit_ZeroDMA *dma) {
-  (void)dma; // avoid compiler warning about unused function parameter
-  transfer_is_done = true;
-}
-
-void setup() {
-  uint32_t t;
-  pinMode(LED_BUILTIN, OUTPUT);   // Onboard LED can be used for precise
-  digitalWrite(LED_BUILTIN, LOW); // benchmarking with an oscilloscope
-  Serial.begin(115200);
-  while(!Serial);                 // Wait for Serial monitor before continuing
-
-  Serial.println("DMA test: memory copy");
-
-  Serial.print("Allocating DMA channel...");
-  stat = myDMA.allocate();
-  myDMA.printStatus(stat);
-
-  Serial.println("Setting up transfer");
-  myDMA.addDescriptor(source_memory, destination_memory, DATA_LENGTH);
-
-  Serial.println("Adding callback");
-  // register_callback() can optionally take a second argument
-  // (callback type), default is DMA_CALLBACK_TRANSFER_DONE
-  myDMA.setCallback(dma_callback);
-
-  // Fill the source buffer with incrementing bytes, dest buf with 0's
-  for(uint32_t i=0; i<DATA_LENGTH; i++) source_memory[i] = i;
-  memset(destination_memory, 0, DATA_LENGTH);
-
-  // Show the destination buffer is empty before transfer
-  Serial.println("Destination buffer before transfer:");
-  dump();
-
-  Serial.println("Starting transfer job");
-  stat = myDMA.startJob();
-  myDMA.printStatus(stat);
-
-  Serial.println("Triggering DMA transfer...");
-  t = micros();
-  digitalWrite(LED_BUILTIN, HIGH);
-  myDMA.trigger();
-
-  // Your code could do other things here while copy happens!
-
-  while(!transfer_is_done); // Chill until DMA transfer completes
-
-  digitalWrite(LED_BUILTIN, LOW);
-  t = micros() - t; // Elapsed time
-
-  Serial.print("Done! ");
-  Serial.print(t);
-  Serial.println(" microseconds");
-
-  Serial.println("Destination buffer after transfer:");
-  dump();
-
-  // Now repeat the same operation, but 'manually' using memcpy() (not DMA):
-  t = micros();
-  digitalWrite(LED_BUILTIN, HIGH);
-  memcpy(destination_memory, source_memory,  DATA_LENGTH);
-  digitalWrite(LED_BUILTIN, LOW);
-  t = micros() - t; // Elapsed time
-  Serial.print("Same operation without DMA: ");
-  Serial.print(t);
-  Serial.println(" microseconds");
-}
-
-// Show contents of destination_memory[] array
-void dump() {
-  for(uint32_t i=0; i<DATA_LENGTH; i++) {
-    Serial.print(destination_memory[i], HEX); Serial.print(' ');
-    if ((i & 15) == 15) Serial.println();
-  }
-}
-
-void loop() { }

libraries/Adafruit_ZeroDMA/examples/zerodma_spi1/zerodma_spi1.ino

@@ -1,98 +0,0 @@
-// DMA-based SPI buffer write.  This is transmit-only as written, i.e.
-// not equivalent to Arduino's SPI.transfer() which both sends and
-// receives a single byte or word.  Also, this is single-buffered to
-// demonstrate a simple SPI write case.  See zerodma_spi2.ino for an
-// example using double buffering (2 buffers alternating fill & transmit).
-
-#include <SPI.h>
-#include <Adafruit_ZeroDMA.h>
-#include "utility/dma.h"
-
-Adafruit_ZeroDMA myDMA;
-ZeroDMAstatus    stat; // DMA status codes returned by some functions
-
-// The memory we'll be issuing to SPI:
-#define DATA_LENGTH 2048
-uint8_t source_memory[DATA_LENGTH];
-
-volatile bool transfer_is_done = false; // Done yet?
-
-// Callback for end-of-DMA-transfer
-void dma_callback(Adafruit_ZeroDMA *dma) {
-  (void)dma; // avoid compiler warning about unused parameter
-  transfer_is_done = true;
-}
-
-void setup() {
-  uint32_t t;
-  pinMode(LED_BUILTIN, OUTPUT);   // Onboard LED can be used for precise
-  digitalWrite(LED_BUILTIN, LOW); // benchmarking with an oscilloscope
-  Serial.begin(115200);
-  while(!Serial);                 // Wait for Serial monitor before continuing
-
-  Serial.println("DMA test: SPI data out");
-
-  SPI.begin();
-
-  Serial.println("Configuring DMA trigger");
-#ifdef __SAMD51__
-  // SERCOM2 is the 'native' SPI SERCOM on Metro M4
-  myDMA.setTrigger(SERCOM2_DMAC_ID_TX);
-#else
-  // SERCOM4 is the 'native' SPI SERCOM on most M0 boards
-  myDMA.setTrigger(SERCOM4_DMAC_ID_TX);
-#endif
-  myDMA.setAction(DMA_TRIGGER_ACTON_BEAT);
-
-  Serial.print("Allocating DMA channel...");
-  stat = myDMA.allocate();
-  myDMA.printStatus(stat);
-
-  Serial.println("Setting up transfer");
-  myDMA.addDescriptor(
-    source_memory,                    // move data from here
-#ifdef __SAMD51__
-    (void *)(&SERCOM2->SPI.DATA.reg), // to here (M4)
-#else
-    (void *)(&SERCOM4->SPI.DATA.reg), // to here (M0)
-#endif
-    DATA_LENGTH,                      // this many...
-    DMA_BEAT_SIZE_BYTE,               // bytes/hword/words
-    true,                             // increment source addr?
-    false);                           // increment dest addr?
-
-  Serial.println("Adding callback");
-  // register_callback() can optionally take a second argument
-  // (callback type), default is DMA_CALLBACK_TRANSFER_DONE
-  myDMA.setCallback(dma_callback);
-
-  // Fill the source buffer with incrementing bytes
-  for(uint32_t i=0; i<DATA_LENGTH; i++) source_memory[i] = i;
-
-  // Start SPI transaction at 12 MHz
-  SPI.beginTransaction(SPISettings(12000000, MSBFIRST, SPI_MODE0));
-
-  Serial.println("Starting transfer job");
-  t = micros();
-  digitalWrite(LED_BUILTIN, HIGH);
-
-  // Because we've configured a peripheral trigger (SPI), there's
-  // no need to manually trigger transfer, it starts up on its own.
-  stat = myDMA.startJob();
-
-  // Your code could do other things here while SPI write happens!
-
-  while(!transfer_is_done); // Chill until DMA transfer completes
-
-  digitalWrite(LED_BUILTIN, LOW);
-  t = micros() - t; // Elapsed time
-
-  SPI.endTransaction();
-  myDMA.printStatus(stat); // Results of start_transfer_job()
-
-  Serial.print("Done! ");
-  Serial.print(t);
-  Serial.println(" microseconds");
-}
-
-void loop() { }

libraries/Adafruit_ZeroDMA/examples/zerodma_spi2/zerodma_spi2.ino

@@ -1,104 +0,0 @@
-// Double-buffered DMA on auxiliary SPI peripheral on pins 11/12/13.
-// Continuously alternates between two data buffers...one is filled
-// with new data as the other is being transmitted.
-
-#include <SPI.h>
-#include <Adafruit_ZeroDMA.h>
-#include "utility/dma.h"
-#include "wiring_private.h" // pinPeripheral() function
-
-// Declare our own SPI peripheral 'mySPI' on pins 11/12/13:
-// (Do not call this SPI1; Arduino Zero and Metro M0 already
-// have an SPI1 (the EDBG interface) and it won't compile.)
-SPIClass mySPI(
-  &sercom1,         // -> Sercom peripheral
-  34,               // MISO pin (also digital pin 12)
-  37,               // SCK pin  (also digital pin 13)
-  35,               // MOSI pin (also digital pin 11)
-  SPI_PAD_0_SCK_1,  // TX pad (MOSI, SCK pads)
-  SERCOM_RX_PAD_3); // RX pad (MISO pad)
-
-Adafruit_ZeroDMA myDMA;
-ZeroDMAstatus    stat; // DMA status codes returned by some functions
-
-// Data we'll issue to mySPI.  There are TWO buffers; one being
-// filled with new data while the other's being transmitted in
-// the background.
-#define DATA_LENGTH 512
-uint8_t source_memory[2][DATA_LENGTH],
-        buffer_being_filled = 0, // Index of 'filling' buffer
-        buffer_value        = 0; // Value of fill
-
-volatile bool transfer_is_done = true; // Done yet?
-
-// Callback for end-of-DMA-transfer
-void dma_callback(Adafruit_ZeroDMA *dma) {
-  (void)dma; // avoid compiler warning about unused parameter
-  transfer_is_done = true;
-}
-
-DmacDescriptor *desc; // DMA descriptor address (so we can change contents)
-
-void setup() {
-  Serial.begin(115200);
-  while(!Serial); // Wait for Serial monitor before continuing
-
-  Serial.println("DMA test: SPI data out");
-
-  mySPI.begin();
-  // Assign pins 11, 12, 13 to SERCOM functionality
-  pinPeripheral(11, PIO_SERCOM);
-  pinPeripheral(12, PIO_SERCOM);
-  pinPeripheral(13, PIO_SERCOM);
-
-  // Configure DMA for SERCOM1 (our 'mySPI' port on 11/12/13)
-  Serial.println("Configuring DMA trigger");
-  myDMA.setTrigger(SERCOM1_DMAC_ID_TX);
-  myDMA.setAction(DMA_TRIGGER_ACTON_BEAT);
-
-  Serial.print("Allocating DMA channel...");
-  stat = myDMA.allocate();
-  myDMA.printStatus(stat);
-
-  desc = myDMA.addDescriptor(
-    source_memory[buffer_being_filled], // move data from here
-    (void *)(&SERCOM1->SPI.DATA.reg),   // to here
-    DATA_LENGTH,                        // this many...
-    DMA_BEAT_SIZE_BYTE,                 // bytes/hword/words
-    true,                               // increment source addr?
-    false);                             // increment dest addr?
-
-  Serial.println("Adding callback");
-  // register_callback() can optionally take a second argument
-  // (callback type), default is DMA_CALLBACK_TRANSFER_DONE
-  myDMA.setCallback(dma_callback);
-}
-
-void loop() {
-  // Fill buffer with new data.  The other buffer might
-  // still be transmitting in the background via DMA.
-  memset(source_memory[buffer_being_filled], buffer_value, DATA_LENGTH);
-
-  // Wait for prior transfer to complete before starting new one...
-  Serial.print("Waiting on prior transfer...");
-  while(!transfer_is_done) Serial.write('.');
-  mySPI.endTransaction();
-  Serial.println("Done!");
-
-  // Modify the DMA descriptor using the newly-filled buffer as source...
-  myDMA.changeDescriptor(desc,           // DMA descriptor address
-    source_memory[buffer_being_filled]); // New src; dst & count don't change
-
-  // Begin new transfer...
-  Serial.println("Starting new transfer job");
-  mySPI.beginTransaction(SPISettings(12000000, MSBFIRST, SPI_MODE0));
-  transfer_is_done = false;            // Reset 'done' flag
-  stat             = myDMA.startJob(); // Go!
-  myDMA.printStatus(stat);
-
-  // Switch buffer indices so the alternate buffer is filled/xfer'd
-  // on the next pass.
-  buffer_being_filled = 1 - buffer_being_filled;
-  buffer_value++;
-}
-

libraries/Adafruit_ZeroDMA/library.properties

@@ -1,9 +0,0 @@
-name=Adafruit Zero DMA Library
-version=1.0.4
-author=Adafruit
-maintainer=Adafruit <info@adafruit.com>
-sentence=DMA helper/wrapped for ATSAMD21 such as Arduino Zero & Feather M0
-paragraph=DMA helper/wrapped for ATSAMD21 such as Arduino Zero & Feather M0
-category=Signal Input/Output
-url=https://github.com/adafruit/Adafruit_ZeroDMA
-architectures=samd

libraries/Adafruit_ZeroDMA/utility/dma.h

@@ -1,145 +0,0 @@
-/**
- * \file
- *
- * \brief SAM Direct Memory Access Controller Driver
- *
- * Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
- *
- * \asf_license_start
- *
- * \page License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * 3. The name of Atmel may not be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * 4. This software may only be redistributed and used in connection with an
- *    Atmel microcontroller product.
- *
- * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
- * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- * \asf_license_stop
- *
- */
-/*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
- */
-#ifndef DMA_H_INCLUDED
-#define DMA_H_INCLUDED
-
-// THIS IS A PARED-DOWN VERSION OF DMA.H FROM ATMEL ASFCORE 3.
-// Please keep original copyright and license intact!
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if (SAML21) || (SAML22) || (SAMC20) || (SAMC21) || defined(__DOXYGEN__) || defined(__SAMD51__)
-#define FEATURE_DMA_CHANNEL_STANDBY
-#endif
-
-enum dma_transfer_trigger_action{
-#ifdef __SAMD51__
-    // SAMD51 has a 'burst' transfer which can be set to one
-    // beat to accomplish same idea as SAMD21's 'beat' transfer.
-    // Trigger name is ACTON_BEAT for backward compatibility.
-    DMA_TRIGGER_ACTON_BLOCK       = DMAC_CHCTRLA_TRIGACT_BLOCK_Val,
-    DMA_TRIGGER_ACTON_BEAT        = DMAC_CHCTRLA_TRIGACT_BURST_Val,
-    DMA_TRIGGER_ACTON_TRANSACTION = DMAC_CHCTRLA_TRIGACT_TRANSACTION_Val,
-#else
-    DMA_TRIGGER_ACTON_BLOCK       = DMAC_CHCTRLB_TRIGACT_BLOCK_Val,
-    DMA_TRIGGER_ACTON_BEAT        = DMAC_CHCTRLB_TRIGACT_BEAT_Val,
-    DMA_TRIGGER_ACTON_TRANSACTION = DMAC_CHCTRLB_TRIGACT_TRANSACTION_Val,
-#endif
-};
-
-enum dma_callback_type {
-    // First item here is for any transfer errors. A transfer error is
-    // flagged if a bus error is detected during an AHB access or when
-    // the DMAC fetches an invalid descriptor
-    DMA_CALLBACK_TRANSFER_ERROR,
-    DMA_CALLBACK_TRANSFER_DONE,
-    DMA_CALLBACK_CHANNEL_SUSPEND,
-    DMA_CALLBACK_N, // Number of available callbacks
-};
-
-enum dma_beat_size {
-    DMA_BEAT_SIZE_BYTE = 0, // 8-bit
-    DMA_BEAT_SIZE_HWORD,    // 16-bit
-    DMA_BEAT_SIZE_WORD,     // 32-bit
-};
-
-enum dma_event_output_selection {
-    DMA_EVENT_OUTPUT_DISABLE = 0, // Disable event generation
-    DMA_EVENT_OUTPUT_BLOCK,       // Event strobe when block xfer complete
-    DMA_EVENT_OUTPUT_RESERVED,
-    DMA_EVENT_OUTPUT_BEAT,        // Event strobe when beat xfer complete
-};
-
-enum dma_block_action {
-    DMA_BLOCK_ACTION_NOACT = 0,
-    // Channel in normal operation and sets transfer complete interrupt
-    // flag after block transfer
-    DMA_BLOCK_ACTION_INT,
-    // Trigger channel suspend after block transfer and sets channel
-    // suspend interrupt flag once the channel is suspended
-    DMA_BLOCK_ACTION_SUSPEND,
-    // Sets transfer complete interrupt flag after a block transfer and
-    // trigger channel suspend. The channel suspend interrupt flag will
-    // be set once the channel is suspended.
-    DMA_BLOCK_ACTION_BOTH,
-};
-
-// DMA step selection. This bit determines whether the step size setting
-// is applied to source or destination address.
-enum dma_step_selection {
-    DMA_STEPSEL_DST = 0,
-    DMA_STEPSEL_SRC,
-};
-
-// Address increment step size. These bits select the address increment step
-// size. The setting apply to source or destination address, depending on
-// STEPSEL setting.
-enum dma_address_increment_stepsize {
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_1 = 0, // beat size * 1
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_2,     // beat size * 2
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_4,     // beat size * 4
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_8,     // etc...
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_16,
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_32,
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_64,
-    DMA_ADDRESS_INCREMENT_STEP_SIZE_128,
-};
-
-// higher numbers are higher priority
-enum dma_priority {
-    DMA_PRIORITY_0, // lowest (default)
-    DMA_PRIORITY_1,
-    DMA_PRIORITY_2,
-    DMA_PRIORITY_3, // highest
-};
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // DMA_H_INCLUDED

libraries/I2S/src/I2S.cpp

@@ -37,6 +37,12 @@ static I2SDevice_SAMD21G18x i2sd(*I2S);
 
 #include "I2S.h"
 
+#ifdef USE_TINYUSB
+// For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
+
 int I2SClass::_beginCount = 0;
 
 I2SClass::I2SClass(uint8_t deviceIndex, uint8_t clockGenerator, uint8_t sdPin, uint8_t sckPin, uint8_t fsPin) :

libraries/SAMD_AnalogCorrection/src/SAMD_AnalogCorrection.cpp

@@ -19,6 +19,11 @@
 
 #include "SAMD_AnalogCorrection.h"
 
+#ifdef USE_TINYUSB
+// For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
 void analogReadCorrection (int offset, uint16_t gain)
 {
   Adc *adc;

libraries/SPI/SPI.cpp

@@ -22,6 +22,11 @@
 #include <wiring_private.h>
 #include <assert.h>
 
+#ifdef USE_TINYUSB
+// For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
 #define SPI_IMODE_NONE   0
 #define SPI_IMODE_EXTINT 1
 #define SPI_IMODE_GLOBAL 2
@@ -332,20 +337,16 @@ void SPIClass::dmaAllocate(void) {
           totalDescriptors * sizeof(DmacDescriptor)))) {
           use_dma = true; // Everything allocated successfully
           extraWriteDescriptors = &extraReadDescriptors[numReadDescriptors];
+
           // Initialize descriptors (copy from first ones)
+          // cast to void* to suppress warning: with no trivial copy-assignment [-Wclass-memaccess]
           for(int i=0; i<numReadDescriptors; i++) {
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wclass-memaccess"
-            memcpy(&extraReadDescriptors[i], firstReadDescriptor,
+            memcpy((void*) &extraReadDescriptors[i], firstReadDescriptor,
               sizeof(DmacDescriptor));
-#pragma GCC diagnostic pop
           }
           for(int i=0; i<numWriteDescriptors; i++) {
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wclass-memaccess"
-            memcpy(&extraWriteDescriptors[i], firstWriteDescriptor,
+            memcpy((void*) &extraWriteDescriptors[i], firstWriteDescriptor,
               sizeof(DmacDescriptor));
-#pragma GCC diagnostic pop
           }
         } // end malloc
       } // end extra descriptor check

libraries/Servo/src/samd/Servo.cpp

@@ -21,6 +21,11 @@
 #include <Arduino.h>
 #include <Servo.h>
 
+#ifdef USE_TINYUSB
+// For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
 #if defined(__SAMD51__)
  // Different prescalers depending on FCPU (avoid overflowing 16-bit counter)
  #if(F_CPU > 200000000)

libraries/USBHost/examples/USB_desc/USB_desc.ino

@@ -216,6 +216,7 @@ byte getconfdescr( byte addr, byte conf )
   uint16_t total_length;
   // FIXME -- no check of return code from usb.getConfDescr()
   rcode = usb.getConfDescr( addr, 0, 4, conf, buf );  //get total length
+  (void) rcode;
   LOBYTE( total_length ) = buf[ 2 ];
   HIBYTE( total_length ) = buf[ 3 ];
   if( total_length > sizeof(buf)) {    //check if total length is larger than buffer
@@ -224,6 +225,7 @@ byte getconfdescr( byte addr, byte conf )
   }
   // FIXME -- no check of return code from usb.getConfDescr()
   rcode = usb.getConfDescr( addr, 0, total_length, conf, buf ); //get the whole descriptor
+  (void) rcode;
   while( buf_ptr < buf + total_length ) {  //parsing descriptors
     descr_length = *( buf_ptr );
     descr_type = *( buf_ptr + 1 );

libraries/Wire/Wire.cpp

@@ -24,6 +24,11 @@ extern "C" {
 #include <Arduino.h>
 #include <wiring_private.h>
 
+#ifdef USE_TINYUSB
+// For Serial when selecting TinyUSB
+#include <Adafruit_TinyUSB.h>
+#endif
+
 #include "Wire.h"
 
 TwoWire::TwoWire(SERCOM * s, uint8_t pinSDA, uint8_t pinSCL)

platform.txt

@@ -17,19 +17,19 @@
 # Arduino SAMD Core and platform.
 #
 # For more info:
-# https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
+# https://arduino.github.io/arduino-cli/0.33/platform-specification/
 
 name=Adafruit SAMD (32-bits ARM Cortex-M0+ and Cortex-M4) Boards
-version=1.6.8
+version=1.7.16
 
 # Compile variables
 # -----------------
 
-compiler.warning_flags=-w
-compiler.warning_flags.none=-w
-compiler.warning_flags.default=
-compiler.warning_flags.more=-Wall -Wno-expansion-to-defined
-compiler.warning_flags.all=-Wall -Wextra -Wno-expansion-to-defined
+compiler.warning_flags=-Werror=return-type
+compiler.warning_flags.none=-Werror=return-type
+compiler.warning_flags.default=-Werror=return-type
+compiler.warning_flags.more=-Wall -Werror=return-type -Wno-expansion-to-defined
+compiler.warning_flags.all=-Wall -Wextra -Werror=return-type -Wno-expansion-to-defined
 
 compiler.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
 compiler.c.cmd=arm-none-eabi-gcc
@@ -70,14 +70,14 @@ compiler.S.extra_flags=
 compiler.ar.extra_flags=
 compiler.elf2hex.extra_flags=
 
-compiler.arm.cmsis.c.flags="-I{runtime.tools.CMSIS-5.4.0.path}/CMSIS/Core/Include/" "-I{runtime.tools.CMSIS-5.4.0.path}/CMSIS/DSP/Include/" "-I{runtime.tools.CMSIS-Atmel-1.2.1.path}/CMSIS/Device/ATMEL/"
+compiler.arm.cmsis.c.flags="-I{runtime.tools.CMSIS-5.4.0.path}/CMSIS/Core/Include/" "-I{runtime.tools.CMSIS-5.4.0.path}/CMSIS/DSP/Include/" "-I{runtime.tools.CMSIS-Atmel-1.2.2.path}/CMSIS/Device/ATMEL/"
 compiler.arm.cmsis.ldflags="-L{runtime.tools.CMSIS-5.4.0.path}/CMSIS/Lib/GCC/" -larm_cortexM0l_math
 
 compiler.libraries.ldflags=
 
 # USB Flags
 # ---------
-build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} -DUSBCON -DUSB_CONFIG_POWER={build.usb_power} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}' {build.flags.usbstack} {build.flags.debug} "-I{build.core.path}/TinyUSB" "-I{build.core.path}/TinyUSB/Adafruit_TinyUSB_ArduinoCore" "-I{build.core.path}/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src"
+build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} -DUSBCON -DUSB_CONFIG_POWER={build.usb_power} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}' {build.flags.usbstack} {build.flags.debug} "-I{runtime.platform.path}/libraries/Adafruit_TinyUSB_Arduino/src/arduino"
 
 # Default advertised device power setting in mA
 build.usb_power=100
@@ -91,13 +91,13 @@ build.usb_manufacturer="Unknown"
 # ----------------
 
 ## Compile c files
-recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {build.cache_flags}  {build.flags.debug} {build.flags.optimize} {build.flags.maxspi} {build.flags.maxqspi} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_SAMD_ADAFRUIT {compiler.c.extra_flags} {build.extra_flags} {build.cache_flags}  {build.flags.debug} {build.flags.optimize} {build.flags.maxspi} {build.flags.maxqspi} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
 
 ## Compile c++ files
-recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {build.cache_flags} {build.flags.debug} {build.flags.optimize} {build.flags.maxspi} {build.flags.maxqspi} {build.extra_flags} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_SAMD_ADAFRUIT {compiler.cpp.extra_flags} {build.extra_flags} {build.cache_flags} {build.flags.debug} {build.flags.optimize} {build.flags.maxspi} {build.flags.maxqspi} {build.extra_flags} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
 
 ## Compile S files
-recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.S.extra_flags} {build.extra_flags} {build.cache_flags} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
+recipe.S.o.pattern="{compiler.path}{compiler.S.cmd}" {compiler.S.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} -DARDUINO_SAMD_ADAFRUIT {compiler.S.extra_flags} {build.extra_flags} {build.cache_flags} {compiler.arm.cmsis.c.flags} {includes} "{source_file}" -o "{object_file}"
 
 ## Create archives
 # archive_file_path is needed for backwards compatibility with IDE 1.6.5 or older, IDE 1.6.6 or newer overrides this value
@@ -143,6 +143,7 @@ tools.bossac.upload.network_pattern="{network_cmd}" -address {serial.port} -port
 
 tools.bossac18.path={runtime.tools.bossac-1.8.0-48-gb176eee.path}
 tools.bossac18.cmd=bossac
+tools.bossac18.cmd.windows=bossac.exe
 
 tools.bossac18.upload.params.verbose=-i -d
 tools.bossac18.upload.params.quiet=
@@ -172,13 +173,13 @@ tools.bossacI.upload.network_pattern="{network_cmd}" -address {serial.port} -por
 # OpenOCD sketch upload
 #
 
-tools.openocd.path={runtime.tools.openocd-0.10.0-arduino7.path}
+tools.openocd.path={runtime.tools.openocd-0.11.0-arduino2.path}
 tools.openocd.cmd=bin/openocd
 tools.openocd.cmd.windows=bin/openocd.exe
 
 tools.openocd.upload.params.verbose=-d2
 tools.openocd.upload.params.quiet=-d0
-tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset 0x2000; shutdown"
+tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset 0x2000; shutdown"
 
 tools.openocd.network_cmd={runtime.tools.arduinoOTA.path}/bin/arduinoOTA
 tools.openocd.upload.network_pattern={network_cmd} -address {serial.port} -port 65280 -username arduino -password "{network.password}" -sketch "{build.path}/{build.project_name}.bin" -upload /sketch -b
@@ -186,7 +187,7 @@ tools.openocd.upload.network_pattern={network_cmd} -address {serial.port} -port
 # Program flashes the binary at 0x0000, so use the linker script without_bootloader
 tools.openocd.program.params.verbose=-d2
 tools.openocd.program.params.quiet=-d0
-tools.openocd.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.elf} verify reset; shutdown"
+tools.openocd.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.elf} verify reset; shutdown"
 
 tools.openocd.erase.params.verbose=-d3
 tools.openocd.erase.params.quiet=-d0
@@ -194,25 +195,25 @@ tools.openocd.erase.pattern=
 
 tools.openocd.bootloader.params.verbose=-d2
 tools.openocd.bootloader.params.quiet=-d0
-tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; init; halt; at91samd bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
+tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; init; halt; $_FLASHDRIVER bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
 
 #
 # OpenOCD sketch upload - version with configurable bootloader size
 # FIXME: this programmer is a workaround for default options being overwritten by uploadUsingPreferences
 #
 
-tools.openocd-withbootsize.path={runtime.tools.openocd-0.10.0-arduino7.path}
+tools.openocd-withbootsize.path={runtime.tools.openocd-0.11.0-arduino2.path}
 tools.openocd-withbootsize.cmd=bin/openocd
 tools.openocd-withbootsize.cmd.windows=bin/openocd.exe
 
 tools.openocd-withbootsize.upload.params.verbose=-d2
 tools.openocd-withbootsize.upload.params.quiet=-d0
-tools.openocd-withbootsize.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset {bootloader.size}; shutdown"
+tools.openocd-withbootsize.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.bin} verify reset {bootloader.size}; shutdown"
 
 # Program flashes the binary at 0x0000, so use the linker script without_bootloader
 tools.openocd-withbootsize.program.params.verbose=-d2
 tools.openocd-withbootsize.program.params.quiet=-d0
-tools.openocd-withbootsize.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.elf} verify reset; shutdown"
+tools.openocd-withbootsize.program.pattern="{path}/{cmd}" {program.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; program {{build.path}/{build.project_name}.elf} verify reset; shutdown"
 
 tools.openocd-withbootsize.erase.params.verbose=-d3
 tools.openocd-withbootsize.erase.params.quiet=-d0
@@ -220,4 +221,28 @@ tools.openocd-withbootsize.erase.pattern=
 
 tools.openocd-withbootsize.bootloader.params.verbose=-d2
 tools.openocd-withbootsize.bootloader.params.quiet=-d0
-tools.openocd-withbootsize.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "telnet_port disabled; init; halt; at91samd bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
+tools.openocd-withbootsize.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "{runtime.platform.path}/{build.openocdscript}" -c "telnet_port disabled; init; halt; $_FLASHDRIVER bootloader 0; program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset; shutdown"
+
+# ----------------------------------------
+# Debugger configuration (general options)
+# ----------------------------------------
+# EXPERIMENTAL feature:
+#  - this is alpha and may be subject to change without notice
+debug.executable={build.path}/{build.project_name}.elf
+debug.toolchain=gcc
+debug.toolchain.path={runtime.tools.arm-none-eabi-gcc.path}/bin/
+debug.toolchain.prefix=arm-none-eabi-
+
+debug.server=openocd
+debug.server.openocd.path={runtime.tools.openocd-0.11.0-arduino2.path}/bin/openocd
+debug.server.openocd.scripts_dir={runtime.tools.openocd-0.11.0-arduino2.path}/share/openocd/scripts/
+debug.server.openocd.script={runtime.platform.path}/{build.openocdscript}
+
+# JLinkServer is not supported by arduino-cli yet
+#   https://github.com/arduino/arduino-cli/blob/eca9d9a8f00582a08fadea8a4b7e3ef01b40d082/commands/debug/debug.go#L160
+# use debug_custom.json to run JLinkGDBServer instead
+#   https://docs.arduino.cc/tutorials/mkr-wifi-1010/mkr-jlink-setup
+#debug.server=jlink
+#debug.server.jlink.path=JLinkGDBServer
+#debug.server.jlink.device=ATSAMD21G18
+#debug.server.jlink.script={runtime.platform.path}/{build.openocdscript}

scripts/jlink/samd21/debug_custom.json

@@ -0,0 +1,6 @@
+{
+  "servertype": "jlink",
+  "device": "ATSAMD21G18A",
+  "interface": "SWD",
+  "serverpath": "JLinkGDBServer"
+}

scripts/jlink/samd51/debug_custom.json

@@ -0,0 +1,6 @@
+{
+  "servertype": "jlink",
+  "device": "ATSAMD51G18",
+  "interface": "SWD",
+  "serverpath": "JLinkGDBServer"
+}

scripts/openocd/daplink_samd21.cfg

@@ -0,0 +1,29 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+source [find interface/cmsis-dap.cfg]
+transport select swd
+
+# chip name
+set CHIPNAME samd21
+
+set _FLASHDRIVER at91samd
+
+source [find target/at91samdXX.cfg]

scripts/openocd/daplink_samd51.cfg

@@ -0,0 +1,29 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+source [find interface/cmsis-dap.cfg]
+transport select swd
+
+# chip name
+set CHIPNAME samd51
+
+set _FLASHDRIVER atsame5
+
+source [find target/atsame5x.cfg]

scripts/openocd/jlink_samd21.cfg

@@ -0,0 +1,29 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+source [find interface/jlink.cfg]
+transport select swd
+
+# chip name
+set CHIPNAME samd21
+
+set _FLASHDRIVER at91samd
+
+source [find target/at91samdXX.cfg]

scripts/openocd/jlink_samd51.cfg

@@ -0,0 +1,29 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+source [find interface/jlink.cfg]
+transport select swd
+
+# chip name
+set CHIPNAME samd51
+
+set _FLASHDRIVER atsame5
+
+source [find target/atsame5x.cfg]

tools/build_all.py

@@ -0,0 +1,106 @@
+import os
+import glob
+import sys
+import subprocess
+from subprocess import Popen, PIPE
+import time
+
+SUCCEEDED = "\033[32msucceeded\033[0m"
+FAILED = "\033[31mfailed\033[0m"
+SKIPPED = "\033[35mskipped\033[0m"
+WARNING = "\033[33mwarnings\033[0m "
+
+exit_status = 0
+success_count = 0
+fail_count = 0
+skip_count = 0
+
+build_format = '| {:25} | {:35} | {:18} | {:6} |'
+build_separator = '-' * 88
+
+FQBN_PREFIX='adafruit:samd:adafruit_'
+
+#default_boards = [ 'metro_m0', 'metro_m4', 'circuitplayground_m0', 'feather_m4_can', 'metro_m0:usbstack=tinyusb', 'metro_m4:speed=120,usbstack=tinyusb' ]
+default_boards = [ 'metro_m0', 'metro_m0:usbstack=tinyusb' ]
+build_boards = []
+
+# build all variants if input not existed
+if len(sys.argv) > 1:
+    build_boards.append(sys.argv[1])
+else:
+    build_boards = default_boards
+
+all_examples = list(glob.iglob('libraries/**/*.ino', recursive=True))
+all_examples.sort()
+
+def build_examples(variant):
+    global exit_status, success_count, fail_count, skip_count, build_format, build_separator
+
+    print('\n')
+    print(build_separator)
+    print('| {:^84} |'.format('Board ' + variant))
+    print(build_separator)
+    print(build_format.format('Library', 'Example', '\033[39mResult\033[0m', 'Time'))
+    print(build_separator)
+    
+    fqbn = "{}{}".format(FQBN_PREFIX, variant)
+
+    for sketch in all_examples:
+        start_time = time.monotonic()
+
+        # Skip if contains: ".board.test.skip" or ".all.test.skip"
+        # Skip if not contains: ".board.test.only" for a specific board
+        sketchdir = os.path.dirname(sketch)
+        if os.path.exists(sketchdir + '/.all.test.skip') or os.path.exists(sketchdir + '/.' + variant + '.test.skip'):
+            success = SKIPPED
+            skip_count += 1
+        elif glob.glob(sketchdir+"/.*.test.only") and not os.path.exists(sketchdir + '/.' + variant + '.test.only'):
+            success = SKIPPED
+            skip_count += 1
+        elif 'usbstack=tinyusb' not in variant and "libraries/Adafruit_TinyUSB_Arduino" in sketch:
+            # skip non-tinyusb variant for tinyusb examples
+            success = SKIPPED
+            skip_count += 1
+        elif 'usbstack=tinyusb' in variant and "libraries/USBHost" in sketch:
+            # skip -tinyusb variant for USBHost examples
+            success = SKIPPED
+            skip_count += 1
+        else:
+            build_result = subprocess.run("arduino-cli compile --warnings all --fqbn {} {}".format(fqbn, sketch), shell=True, stdout=PIPE, stderr=PIPE)
+
+            # get stderr into a form where warning/error was output to stderr
+            if build_result.returncode != 0:
+                exit_status = build_result.returncode
+                success = FAILED
+                fail_count += 1
+            else:
+                success_count += 1
+                if build_result.stderr:
+                    success = WARNING
+                else:
+                    success = SUCCEEDED
+
+        build_duration = time.monotonic() - start_time
+
+        print(build_format.format(sketch.split(os.path.sep)[1], os.path.basename(sketch), success, '{:5.2f}s'.format(build_duration)))
+
+        if success != SKIPPED:
+            # Build failed
+            if build_result.returncode != 0:
+                print(build_result.stdout.decode("utf-8"))
+
+            # Build with warnings
+            if build_result.stderr:
+                print(build_result.stderr.decode("utf-8"))
+
+build_time = time.monotonic()
+
+for board in build_boards:
+    build_examples(board)
+
+print(build_separator)
+build_time = time.monotonic() - build_time
+print("Build Summary: {} {}, {} {}, {} {} and took {:.2f}s".format(success_count, SUCCEEDED, fail_count, FAILED, skip_count, SKIPPED, build_time))
+print(build_separator)
+
+sys.exit(exit_status)

tools/makeboards.py

@@ -0,0 +1,414 @@
+#!/usr/bin/env python3
+
+print('''# Copyright (c) 2014-2015 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
+''')
+
+mcu_dict = {
+    'SAMD21': {
+        'flash_size': 262144,
+        'data_size': 0,
+        'offset': '0x2000',
+        'build_mcu': 'cortex-m0plus',
+        'f_cpu': '48000000L',
+        'extra_flags': '-DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS',
+        'openocdscript': 'scripts/openocd/daplink_samd21.cfg',
+    },
+
+    'SAMD51': {
+        'flash_size': 507904, # SAMD51P20A and SAMD51J20A has 1032192
+        'data_size': 0,
+        'offset': '0x4000',
+        'build_mcu': 'cortex-m4',
+        'f_cpu': '120000000L',
+        'extra_flags': '-D__SAMD51__ -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16',
+        'openocdscript': 'scripts/openocd/daplink_samd51.cfg',
+    },
+
+    'SAME51': {
+        'flash_size': 507904,
+        'data_size': 0,
+        'offset': '0x4000',
+        'build_mcu': 'cortex-m4',
+        'f_cpu': '120000000L',
+        'extra_flags': '-D__SAMD51__ -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16',
+        'openocdscript': 'scripts/openocd/daplink_samd51.cfg',
+    },
+}
+
+
+def build_header(mcu, name, vendor, product, vid, pid_list):
+    prettyname = f"{vendor} {product} ({mcu})"
+    print()
+    print("# -----------------------------------")
+    print(f"# {prettyname}")
+    print("# -----------------------------------")
+    print(f"{name}.name={prettyname}")
+    print()
+
+    print("# VID/PID for Bootloader, Arduino & CircuitPython")
+    for i in range(len(pid_list)):
+        print(f"{name}.vid.{i}={vid}")
+        print(f"{name}.pid.{i}={pid_list[i]}")
+    print()
+
+
+def build_upload(mcu, name, extra_flags):
+    print("# Upload")    
+    print(f"{name}.upload.tool=bossac18")
+    print(f"{name}.upload.protocol=sam-ba")
+    
+    if ('SAMD51P20A' in extra_flags) or ('SAMD51J20A' in extra_flags):
+        flash_size = 1032192
+    else:
+        flash_size = mcu_dict[mcu]['flash_size']
+    print(f"{name}.upload.maximum_size={flash_size}")
+    #print(f"{name}.upload.maximum_data_size={mcu_dict[mcu]['data_size']}")
+    
+    print(f"{name}.upload.offset={mcu_dict[mcu]['offset']}")
+    print(f"{name}.upload.use_1200bps_touch=true")
+    print(f"{name}.upload.wait_for_upload_port=true")
+    print(f"{name}.upload.native_usb=true")
+    print()
+
+
+def build_build(mcu, name, variant, vendor, product, vid, pid_list, boarddefine, extra_flags, bootloader):
+    mcu_properties = mcu_dict[mcu]
+
+    print("# Build")
+    print(f"{name}.build.mcu={mcu_properties['build_mcu']}")
+    print(f"{name}.build.f_cpu={mcu_properties['f_cpu']}")
+    print(f'{name}.build.usb_product="{product}"')
+    print(f'{name}.build.usb_manufacturer="{vendor}"')
+    print(f"{name}.build.board={boarddefine}")
+    print(f"{name}.build.core=arduino")
+
+    # Due to fastLed issue https://github.com/FastLED/FastLED/issues/1363
+    # although there is a simple fix already https://github.com/FastLED/FastLED/pull/1424
+    # fastLED is not well maintained, and we need to skip ARDUINO_SAMD_ZERO for affected boards
+    # in the long run we should move all of our libraries away from ARDUINO_SAMD_ZERO
+    if variant in [ 'gemma_m0', 'trinket_m0', 'qtpy_m0', 'itsybitsy_m0' ]:
+        print(f"{name}.build.extra_flags={extra_flags} -DARM_MATH_CM0PLUS {{build.usb_flags}}")
+    else:
+        print(f"{name}.build.extra_flags={extra_flags} {mcu_properties['extra_flags']} {{build.usb_flags}}")
+
+    print(f"{name}.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld")
+    print(f"{name}.build.openocdscript={mcu_properties['openocdscript']}")
+    print(f"{name}.build.variant={variant}")
+    print(f"{name}.build.variant_system_lib=")
+    print(f"{name}.build.vid={vid}")
+    print(f"{name}.build.pid={pid_list[0]}")
+    print(f"{name}.bootloader.tool=openocd")
+    print(f"{name}.bootloader.file={bootloader}")
+    if (mcu == 'SAMD51' or mcu == 'SAME51'):
+        print(f'{name}.compiler.arm.cmsis.ldflags="-L{{runtime.tools.CMSIS-5.4.0.path}}/CMSIS/Lib/GCC/" "-L{{build.variant.path}}" -larm_cortexM4lf_math -mfloat-abi=hard -mfpu=fpv4-sp-d16')
+    print()
+    
+
+def build_menu(mcu, name):
+    if (mcu == 'SAMD51' or mcu == 'SAME51'):
+        print("# Menu: Cache")
+        print(f"{name}.menu.cache.on=Enabled")
+        print(f"{name}.menu.cache.on.build.cache_flags=-DENABLE_CACHE")
+        print(f"{name}.menu.cache.off=Disabled")
+        print(f"{name}.menu.cache.off.build.cache_flags=")
+        print()
+
+        print("# Menu: Speed")
+        print(f"{name}.menu.speed.120=120 MHz (standard)")
+        print(f"{name}.menu.speed.120.build.f_cpu=120000000L")
+        print(f"{name}.menu.speed.150=150 MHz (overclock)")
+        print(f"{name}.menu.speed.150.build.f_cpu=150000000L")
+        print(f"{name}.menu.speed.180=180 MHz (overclock)")
+        print(f"{name}.menu.speed.180.build.f_cpu=180000000L")
+        print(f"{name}.menu.speed.200=200 MHz (overclock)")
+        print(f"{name}.menu.speed.200.build.f_cpu=200000000L")
+        print()
+
+    print("# Menu: Optimization")
+    print(f"{name}.menu.opt.small=Small (-Os) (standard)")
+    print(f"{name}.menu.opt.small.build.flags.optimize=-Os")
+    print(f"{name}.menu.opt.fast=Fast (-O2)")
+    print(f"{name}.menu.opt.fast.build.flags.optimize=-O2")
+    print(f"{name}.menu.opt.faster=Faster (-O3)")
+    print(f"{name}.menu.opt.faster.build.flags.optimize=-O3")
+    print(f"{name}.menu.opt.fastest=Fastest (-Ofast)")
+    print(f"{name}.menu.opt.fastest.build.flags.optimize=-Ofast")
+    print(f"{name}.menu.opt.dragons=Here be dragons (-Ofast -funroll-loops)")
+    print(f"{name}.menu.opt.dragons.build.flags.optimize=-Ofast -funroll-loops")
+    print()
+    
+    if (mcu == 'SAMD51' or mcu == 'SAME51'):
+        print("# Menu: QSPI Speed")
+        print(f"{name}.menu.maxqspi.50=50 MHz (standard)")
+        print(f"{name}.menu.maxqspi.50.build.flags.maxqspi=-DVARIANT_QSPI_BAUD_DEFAULT=50000000")
+        print(f"{name}.menu.maxqspi.fcpu=CPU Speed / 2")
+        print(f"{name}.menu.maxqspi.fcpu.build.flags.maxqspi=-DVARIANT_QSPI_BAUD_DEFAULT=({{build.f_cpu}})")
+        print()
+
+    print("# Menu: USB Stack")
+    print(f"{name}.menu.usbstack.arduino=Arduino")
+    print(f"{name}.menu.usbstack.tinyusb=TinyUSB")
+    print(f"{name}.menu.usbstack.tinyusb.build.flags.usbstack=-DUSE_TINYUSB")
+    print()
+
+    print("# Menu: Debug")
+    print(f"{name}.menu.debug.off=Off")
+    print(f"{name}.menu.debug.on=On")
+    print(f"{name}.menu.debug.on.build.flags.debug=-g")
+    print()
+
+    # comment out for now since debugger selection does not work, debug does not pickup the right openocd script
+    # print("# Menu: Debugger")
+    # script_mcu = 'samd21' if mcu == 'SAMD21' else 'samd51'
+    # print(f"{name}.menu.debugger.daplink=CMSIS-DAP (DAPLink)")
+    # print(f"{name}.menu.debugger.daplink.build.openocdscript=scripts/openocd/daplink_{script_mcu}.cfg")
+    # print(f"{name}.menu.debugger.jlink=J-Link")
+    # print(f"{name}.menu.debugger.jlink.build.openocdscript=scripts/openocd/jlink_{script_mcu}.cfg")
+
+
+def build_global_menu():
+    print("menu.cache=Cache")
+    print("menu.speed=CPU Speed")
+    print("menu.opt=Optimize")
+    print("menu.maxqspi=Max QSPI")    
+    print("menu.usbstack=USB Stack")
+    print("menu.debug=Debug")
+    #print("menu.debugger=Debugger")
+
+
+def make_board(mcu, name, variant, vendor, product, vid, pid_list, boarddefine, extra_flags, bootloader):
+    build_header(mcu, name, vendor, product, vid, pid_list)
+    build_upload(mcu, name, extra_flags)
+    build_build(mcu, name, variant, vendor, product, vid, pid_list, boarddefine, extra_flags, bootloader)    
+    build_menu(mcu, name)
+
+
+# ------------------------------
+# main
+# ------------------------------
+
+build_global_menu()
+
+# ------------------------------
+# SAM D21 (M0)
+# ------------------------------
+
+# name, variant, vendor, product, vid, pid_list, boarddefine, extra_flags, bootloader
+# try to sort in Alphabetical order
+d21_board_list = [
+    ["adafruit_feather_m0", "feather_m0", "Adafruit", "Feather M0",
+     "0x239A", ["0x800B", "0x000B", "0x0015"],
+     "SAMD_ZERO", "-D__SAMD21G18A__ -DADAFRUIT_FEATHER_M0",
+     "featherM0/bootloader-feather_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_feather_m0_express", "feather_m0_express", "Adafruit", "Feather M0 Express",
+     "0x239A", ["0x801B", "0x001B"],
+     "SAMD_FEATHER_M0_EXPRESS", "-D__SAMD21G18A__ -DARDUINO_SAMD_FEATHER_M0 -DADAFRUIT_FEATHER_M0_EXPRESS",
+     "featherM0/bootloader-feather_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_metro_m0", "metro_m0", "Adafruit", "Metro M0 Express",
+     "0x239A", ["0x8013", "0x0013"],
+     "SAMD_ZERO", "-D__SAMD21G18A__ -DADAFRUIT_METRO_M0_EXPRESS",
+     "metroM0/bootloader-metro_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_circuitplayground_m0", "circuitplay", "Adafruit", "Circuit Playground Express",
+     "0x239A", ["0x8018", "0x0019"],
+     "SAMD_CIRCUITPLAYGROUND_EXPRESS", "-D__SAMD21G18A__ -DCRYSTALLESS -DADAFRUIT_CIRCUITPLAYGROUND_M0",
+     "circuitplayM0/bootloader-circuitplay_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_gemma_m0", "gemma_m0", "Adafruit", "Gemma M0",
+     "0x239A", ["0x801C", "0x001C"],
+     "GEMMA_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_GEMMA_M0",
+     "gemmaM0/bootloader-gemma_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_trinket_m0", "trinket_m0", "Adafruit", "Trinket M0",
+     "0x239A", ["0x801E", "0x001E"],
+     "TRINKET_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_TRINKET_M0",
+     "trinketm0/bootloader-trinket_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_qtpy_m0", "qtpy_m0", "Adafruit", "QT Py M0",
+     "0x239A", ["0x80CB", "0x00CB", "0x00CC"],
+     "QTPY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_QTPY_M0",
+     "qtpyM0/bootloader-qtpy_m0.bin"],
+
+    ["adafruit_neotrinkey_m0", "neotrinkey_m0", "Adafruit", "NeoPixel Trinkey M0",
+     "0x239A", ["0x80EF", "0x00EF", "0x80F0"],
+     "NEOTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_NEOTRINKEY_M0",
+     "neotrinkey_m0/bootloader-neotrinkey_m0.bin"],
+
+    ["adafruit_rotarytrinkey_m0", "rotarytrinkey_m0", "Adafruit", "Rotary Trinkey M0",
+     "0x239A", ["0x80FB", "0x00FB", "0x80FC"],
+     "ROTARYTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_ROTARYTRINKEY_M0",
+     "rotarytrinkey_m0/bootloader-rotarytrinkey_m0.bin"],
+
+    ["adafruit_neokeytrinkey_m0", "neokeytrinkey_m0", "Adafruit", "NeoKey Trinkey M0",
+     "0x239A", ["0x80FF", "0x00FF", "0x8100"],
+     "NEOKEYTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_NEOKEYTRINKEY_M0",
+     "neokeytrinkey_m0/bootloader-neokeytrinkey_m0.bin"],
+
+    ["adafruit_slidetrinkey_m0", "slidetrinkey_m0", "Adafruit", "Slide Trinkey M0",
+     "0x239A", ["0x8101", "0x0101", "0x8102"],
+     "SLIDETRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_SLIDETRINKEY_M0",
+     "slidetrinkey_m0/bootloader-slidetrinkey_m0.bin"],
+
+    ["adafruit_proxlighttrinkey_m0", "proxlighttrinkey_m0", "Adafruit", "ProxLight Trinkey M0",
+     "0x239A", ["0x8103", "0x0103", "0x8104"],
+     "PROXLIGHTTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_PROXLIGHTTRINKEY_M0",
+     "proxlighttrinkey_m0/bootloader-proxlighttrinkey_m0.bin"],
+
+    ["adafruit_sht4xtrinkey_m0", "sht4xtrinkey_m0", "Adafruit", "SHT4x Trinkey M0",
+     "0x239A", ["0x8153", "0x0153", "0x8154"],
+     "SHT4XTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_SHT4XTRINKEY_M0",
+     "sht4xtrinkey_m0/bootloader-sht4xtrinkey_m0.bin"],
+
+    ["adafruit_pixeltrinkey_m0", "pixeltrinkey_m0", "Adafruit", "Pixel Trinkey M0",
+     "0x239A", ["0x8155", "0x0155", "0x8156"],
+     "PIXELTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_PIXELTRINKEY_M0",
+     "pixeltrinkey_m0/bootloader-pixeltrinkey_m0.bin"],
+
+    ["adafruit_TRRStrinkey_m0", "trrstrinkey_m0", "Adafruit", "TRRS Trinkey M0",
+     "0x239A", ["0x8157", "0x0157", "0x8158"],
+     "TRRSTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_TRRSTRINKEY_M0",
+     "trrstrinkey_m0/bootloader-TRRStrinkey_m0.bin"],
+
+    ["adafruit_thumbsticktrinkey_m0", "thumbsticktrinkey_m0", "Adafruit", "Thumbstick Trinkey M0",
+     "0x239A", ["0x8159", "0x0159", "0x8160"],
+     "THUMBSTICKTRINKEY_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_THUMBSTICKTRINKEY_M0",
+     "thumbsticktrinkey_m0/bootloader-thumbsticktrinkey_m0.bin"],
+
+    ["adafruit_itsybitsy_m0", "itsybitsy_m0", "Adafruit", "ItsyBitsy M0 Express",
+     "0x239A", ["0x800F", "0x000F", "0x8012"],
+     "ITSYBITSY_M0", "-D__SAMD21G18A__ -DCRYSTALLESS -DADAFRUIT_ITSYBITSY_M0",
+     "itsybitsyM0/bootloader-itsybitsy_m0-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pirkey", "pirkey", "Adafruit", "pIRKey",
+     "0x239A", ["0x8027", "0x0027", "0x8028"],
+     "PIRKEY", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_PIRKEY",
+     "pirkey/bootloader-pirkey-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_hallowing", "hallowing_m0_express", "Adafruit", "Hallowing M0",
+     "0x239A", ["0xDEAD", "0xD1ED", "0xB000"],
+     "SAMD_HALLOWING", "-D__SAMD21G18A__ -DCRYSTALLESS -DARDUINO_SAMD_HALLOWING_M0 -DADAFRUIT_HALLOWING",
+     "hallowingM0/bootloader-hallowing_m0-v2.0.0-adafruit.0-21-g887cc30.bin"],
+
+    ["adafruit_crickit_m0", "crickit_m0", "Adafruit", "Crickit M0",
+     "0x239A", ["0x802D", "0x002D", "0x802D"],
+     "CRICKIT_M0", "-D__SAMD21G18A__ -DCRYSTALLESS -DADAFRUIT_CRICKIT_M0",
+     "crickit/samd21_sam_ba.bin"],
+
+    ["adafruit_blm_badge", "blm_badge", "Adafruit", "BLM Badge",
+     "0x239A", ["0x80BF", "0x00BF", "0x80C0"],
+     "BLM_BADGE_M0", "-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_BLM_BADGE",
+     "blmbadge/bootloader-blm_badge.bin"],
+]
+
+for b in d21_board_list:
+    make_board("SAMD21", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8])
+
+
+# ----------------------------
+# SAM D51 and E51 (M4)
+# ----------------------------
+
+d51_board_list = [
+    ["adafruit_metro_m4", "metro_m4", "Adafruit", "Metro M4",
+     "0x239A", ["0x8020", "0x0020", "0x8021", "0x0021"],
+     "METRO_M4", "-D__SAMD51J19A__ -DADAFRUIT_METRO_M4_EXPRESS",
+     "metroM4/bootloader-metro_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_grandcentral_m4", "grand_central_m4", "Adafruit", "Grand Central M4",
+     "0x239A", ["0x8031", "0x0031", "0x0032"],
+     "GRAND_CENTRAL_M4", "-D__SAMD51P20A__ -DADAFRUIT_GRAND_CENTRAL_M4",
+     "grand_central_m4/bootloader-grandcentral_m4.bin"],
+
+    ["adafruit_itsybitsy_m4", "itsybitsy_m4", "Adafruit", "ItsyBitsy M4",
+     "0x239A", ["0x802B", "0x002B"],
+     "ITSYBITSY_M4", "-D__SAMD51G19A__ -DCRYSTALLESS -DADAFRUIT_ITSYBITSY_M4_EXPRESS",
+     "itsybitsyM4/bootloader-itsybitsy_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_feather_m4", "feather_m4", "Adafruit", "Feather M4 Express",
+     "0x239A", ["0x8022", "0x0022", "0x8026"],
+     "FEATHER_M4", "-D__SAMD51J19A__ -DADAFRUIT_FEATHER_M4_EXPRESS",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_feather_m4_can", "feather_m4_can", "Adafruit", "Feather M4 CAN",
+     "0x239A", ["0x80CD", "0x00CD"],
+     "FEATHER_M4_CAN", "-D__SAME51J19A__ -DADAFRUIT_FEATHER_M4_EXPRESS -DADAFRUIT_FEATHER_M4_CAN",
+     "featherM4/bootloader-feather_m4_express-v2.0.0-adafruit.5.bin"],
+
+    # ["adafruit_feather_m4_log", "feather_m4_log", "Adafruit", "Feather M4 Adalogger",
+    #  "0x239A", ["0x8115", "0x0115", "0x8116"],
+    #  "FEATHER_M4_ADALOGGER", "-D__SAME51J19A__ -DADAFRUIT_FEATHER_M4_ADALOGGER",
+    #  "feather_m4_log/bootloader-feather_m4_log-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_trellis_m4", "trellis_m4",
+     "Adafruit", "Trellis M4", "0x239A", ["0x802F", "0x002F", "0x0030"],
+     "TRELLIS_M4", "-D__SAMD51G19A__ -DCRYSTALLESS -DADAFRUIT_TRELLIS_M4_EXPRESS",
+     "trellisM4/bootloader-trellis_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pyportal_m4", "pyportal_m4", "Adafruit", "PyPortal M4",
+     "0x239A", ["0x8035", "0x0035", "0x8036"],
+     "PYPORTAL_M4", "-D__SAMD51J20A__ -DCRYSTALLESS -DADAFRUIT_PYPORTAL",
+     "metroM4/bootloader-metro_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pyportal_m4_titano", "pyportal_m4_titano", "Adafruit", "PyPortal M4 Titano",
+     "0x239A", ["0x8053", "0x8053"],
+     "PYPORTAL_M4_TITANO", "-D__SAMD51J20A__ -DCRYSTALLESS -DADAFRUIT_PYPORTAL_M4_TITANO",
+     "metroM4/bootloader-metro_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pybadge_m4", "pybadge_m4", "Adafruit", "pyBadge M4 Express",
+     "0x239A", ["0x8033", "0x0033", "0x8034", "0x0034"],
+     "PYBADGE_M4", "-D__SAMD51J19A__ -DCRYSTALLESS -DADAFRUIT_PYBADGE_M4_EXPRESS",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_metro_m4_airliftlite", "metro_m4_airlift", "Adafruit", "Metro M4 AirLift Lite",
+     "0x239A", ["0x8037", "0x0037"],
+     "METRO_M4_AIRLIFT_LITE", "-D__SAMD51J19A__ -DADAFRUIT_METRO_M4_AIRLIFT_LITE",
+     "metroM4/bootloader-metro_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pygamer_m4", "pygamer_m4", "Adafruit", "PyGamer M4 Express",
+     "0x239A", ["0x803D", "0x003D", "0x803E"],
+     "PYGAMER_M4", "-D__SAMD51J19A__ -DCRYSTALLESS -DADAFRUIT_PYGAMER_M4_EXPRESS",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_pybadge_airlift_m4", "pybadge_airlift_m4", "Adafruit", "pyBadge AirLift M4",
+     "0x239A", ["0x8043", "0x0043", "0x8044"],
+     "PYBADGE_AIRLIFT_M4", "-D__SAMD51J20A__ -DCRYSTALLESS -DADAFRUIT_PYBADGE_AIRLIFT_M4",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_monster_m4sk", "monster_m4sk", "Adafruit", "MONSTER M4SK",
+     "0x239A", ["0x8047", "0x0047", "0x8048"],
+     "MONSTER_M4SK", "-D__SAMD51G19A__ -DCRYSTALLESS -DADAFRUIT_MONSTER_M4SK_EXPRESS",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_hallowing_m4", "hallowing_m4", "Adafruit", "Hallowing M4",
+     "0x239A", ["0x8049", "0x0049", "0x804A"],
+     "HALLOWING_M4", "-D__SAMD51J19A__ -DCRYSTALLESS -DADAFRUIT_HALLOWING_M4_EXPRESS",
+     "featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin"],
+
+    ["adafruit_matrixportal_m4", "matrixportal_m4", "Adafruit", "Matrix Portal M4",
+     "0x239A", ["0x80C9", "0x00C9", "0x80CA"],
+     "MATRIXPORTAL_M4", "-D__SAMD51J19A__ -DCRYSTALLESS  -DADAFRUIT_MATRIXPORTAL_M4_EXPRESS",
+     "matrixportalM4/bootloader-matrixportal_m4.bin"],
+]
+
+for b in d51_board_list:
+    # M4 CAN is the only SAME51
+    if b[0] == "adafruit_feather_m4_can":
+        make_board("SAME51", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8])
+    else:
+        make_board("SAMD51", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8])

variants/circuitplay/variant.h

@@ -66,12 +66,37 @@
 // #define digitalPinToTimer(P)
 
 
+// Digital pins
+// ----
+#define PIN_D4               (4u)
+#define PIN_D5               (5u)
+#define PIN_D7               (7u)
+#define PIN_D8               (8u)
+#define PIN_D11              (25u)
+#define PIN_D12              (26u)
+#define PIN_D13              (13u)
+
+#define D4                   PIN_D4
+#define D5                   PIN_D5
+#define D7                   PIN_D7
+#define D8                   PIN_D8
+#define D11                  PIN_D11
+#define D12                  PIN_D12
+#define D13                  PIN_D13
+
 // LEDs
 // ----
-#define PIN_LED_13  (13u)
+#define PIN_LED_13  (D13)
 #define PIN_LED     PIN_LED_13
 #define LED_BUILTIN PIN_LED
 
+// Neopixel
+#define PIN_NEOPIXEL  D8
+#define NEOPIXEL_NUM  10
+
+#define PIN_BUTTON1   D4 // Left Button
+#define PIN_BUTTON2   D5 // Right Button
+
 
 //#define PIN_LED_RXL          (25u)
 //#define PIN_LED_TXL          (26u)
@@ -242,10 +267,7 @@ extern Uart Serial1;
 //
 // SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
 //                            pins are NOT connected to anything by default.
-#define SERIAL_PORT_USBVIRTUAL      SerialUSB
-#define SERIAL_PORT_MONITOR         SerialUSB
+#define SERIAL_PORT_USBVIRTUAL      Serial
+#define SERIAL_PORT_MONITOR         Serial
 #define SERIAL_PORT_HARDWARE        Serial1
 #define SERIAL_PORT_HARDWARE_OPEN   Serial1
-
-// Alias Serial to SerialUSB
-#define Serial                      SerialUSB

variants/feather_m4/linker_scripts/gcc/flash_with_bootloader.ld

@@ -170,6 +170,10 @@ SECTIONS
 		KEEP(*(.fini_array))
 		PROVIDE_HIDDEN (__fini_array_end = .);
 
+		. = ALIGN(4);
+		/* Keep .ramfunc functions in RAM */
+		KEEP(*(.ramfunc))
+
 		KEEP(*(.jcr*))
 		. = ALIGN(16);
 		/* All data end */

variants/feather_m4_can/variant.cpp

@@ -67,7 +67,7 @@ const PinDescription g_APinDescription[PINS_COUNT]=
   { PORTA,  6, PIO_ANALOG, (PIN_ATTR_ANALOG|PIN_ATTR_PWM_E), ADC_Channel6, TC1_CH0, TC1_CH0, EXTERNAL_INT_6 },
 
   // A6, D20 - VDiv!
-  { PORTB,  1, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel13, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_1 },
+  { PORTB,  0, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel12, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_0 },
 
 
   // 21..22 I2C pins (SDA/SCL)

variants/gemma_m0/variant.h

@@ -85,8 +85,12 @@ extern "C"
 #define PIN_LED3             PIN_LED_TXL
 #define LED_BUILTIN          PIN_LED_13
 // DotStar LED
-#define INTERNAL_DS_DATA     3
-#define INTERNAL_DS_CLK      4
+#define INTERNAL_DS_DATA     (3u)
+#define INTERNAL_DS_CLK      (4u)
+#define PIN_DOTSTAR_DATA     (3u)
+#define PIN_DOTSTAR_CLK      (4u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
+#define DOTSTAR_NUM          (1u)
 
 /*
  * Analog pins

variants/hallowing_m0_express/variant.h

@@ -102,7 +102,6 @@ extern "C"
 #define PIN_A9               (PIN_A0 + 9)
 #define PIN_A10              (PIN_A0 + 10)
 #define PIN_A11              (PIN_A0 + 11)
-#define PIN_A12              (41ul)
 #define PIN_DAC0             (14ul)
 
 static const uint8_t A0  = PIN_A0;
@@ -117,7 +116,6 @@ static const uint8_t A8  = PIN_A8 ;
 static const uint8_t A9  = PIN_A9 ;
 static const uint8_t A10 = PIN_A10 ;
 static const uint8_t A11 = PIN_A11 ;
-static const uint8_t A12 = PIN_A12 ;
 
 static const uint8_t DAC0 = PIN_DAC0;
 

variants/itsybitsy_m0/variant.h

@@ -80,6 +80,11 @@ extern "C"
 #define PIN_LED_13           (13u)
 #define PIN_LED              PIN_LED_13
 #define LED_BUILTIN          PIN_LED_13
+// DotStar LED
+#define PIN_DOTSTAR_DATA     (41u)
+#define PIN_DOTSTAR_CLK      (40u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
+#define DOTSTAR_NUM          (1u)
 
 /*
  * Analog pins
@@ -96,7 +101,6 @@ extern "C"
 #define PIN_A9               (PIN_A0 + 9)
 #define PIN_A10              (PIN_A0 + 10)
 #define PIN_A11              (PIN_A0 + 11)
-#define PIN_A12              (42ul)
 #define PIN_DAC0             (14ul)
 
 static const uint8_t A0  = PIN_A0;
@@ -111,7 +115,6 @@ static const uint8_t A8  = PIN_A8 ;
 static const uint8_t A9  = PIN_A9 ;
 static const uint8_t A10 = PIN_A10 ;
 static const uint8_t A11 = PIN_A11 ;
-static const uint8_t A12 = PIN_A12 ;
 static const uint8_t DAC0 = PIN_DAC0;
 
 #define ADC_RESOLUTION		12

variants/itsybitsy_m4/variant.h

@@ -84,6 +84,11 @@ extern "C"
 #define PIN_LED_13           (13u)
 #define PIN_LED              PIN_LED_13
 #define LED_BUILTIN          PIN_LED_13
+// DotStar LED
+#define PIN_DOTSTAR_DATA     (8u)
+#define PIN_DOTSTAR_CLK      (6u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
+#define DOTSTAR_NUM          (1u)
 
 /*
  * Analog pins
@@ -137,7 +142,7 @@ static const uint8_t ATN = PIN_ATN;
 #define PAD_SPI_TX           SPI_PAD_0_SCK_1
 #define PAD_SPI_RX           SERCOM_RX_PAD_3
 
-static const uint8_t SS	  = PIN_A2 ;	
+static const uint8_t SS	  = PIN_A2 ;
 static const uint8_t MOSI = PIN_SPI_MOSI ;
 static const uint8_t MISO = PIN_SPI_MISO ;
 static const uint8_t SCK  = PIN_SPI_SCK ;

variants/neokeytrinkey_m0/variant.h

@@ -98,8 +98,22 @@ static const uint8_t A1  = PIN_A1;
 
 /*
  * SPI Interfaces
+ * Fake SPI Interface just so we can compile
  */
-#define SPI_INTERFACES_COUNT 0
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
+
 
 /*
  * Wire Interfaces

variants/neotrinkey_m0/variant.h

@@ -97,8 +97,21 @@ static const uint8_t A2  = PIN_A2;
 
 /*
  * SPI Interfaces
+ * Fake SPI Interface just so we can compile
  */
-#define SPI_INTERFACES_COUNT 0
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
 
 /*
  * Wire Interfaces

variants/pixeltrinkey_m0/debug_scripts/variant.gdb

@@ -0,0 +1,31 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# Define 'reset' command
+define reset
+
+info reg
+
+break main
+
+# End of 'reset' command
+end
+
+target remote | openocd -c "interface cmsis-dap" -c "set CHIPNAME at91samd21e18" -f target/at91samdXX.cfg -c "gdb_port pipe; log_output openocd.log"

variants/pixeltrinkey_m0/linker_scripts/gcc/flash_with_bootloader.ld

@@ -0,0 +1,216 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000+0x2000, LENGTH = 0x00040000-0x2000 /* First 8KB used by bootloader */
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.sketch_boot))
+
+		. = ALIGN(0x2000);
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM);
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/pixeltrinkey_m0/linker_scripts/gcc/flash_without_bootloader.ld

@@ -0,0 +1,214 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __ram_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM) ;
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/pixeltrinkey_m0/openocd_scripts/sht4xtrinkey_m0.cfg

@@ -0,0 +1,28 @@
+#
+#  Adafruit ItsyBitsy M0 OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# chip name
+set CHIPNAME at91samd21e18
+set ENDIAN little
+
+# choose a port here
+set telnet_port 0
+
+source [find target/at91samdXX.cfg]

variants/pixeltrinkey_m0/pins_arduino.h

@@ -0,0 +1,21 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+// API compatibility
+#include "variant.h"
+

variants/pixeltrinkey_m0/variant.cpp

@@ -0,0 +1,52 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "Arduino.h"
+/*
+ * Pins descriptions
+ */
+const PinDescription g_APinDescription[]=
+{
+  // DAC / A0 for monitoring 5V
+  { PORTA,  2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel0, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_2 }, // A0 / D0 / DAC  
+
+  // Internal NeoPixel / D1
+  { PORTA, 1, PIO_ANALOG, PIN_ATTR_ANALOG, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+
+  // SPI MOSI/SCK
+  { PORTA, 4, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // D2 / MOSI
+  { PORTA, 5, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // D3 / SCK
+
+  // A6 / MISO
+  { PORTA, 6, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel6, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // A6 / MISO
+
+  // USB pins D5, D6, D7
+  { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
+  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
+  { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP
+
+} ;
+
+const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;
+
+// Multi-serial objects instantiation
+SERCOM sercom0( SERCOM0 ) ;
+SERCOM sercom1( SERCOM1 ) ;
+SERCOM sercom2( SERCOM2 ) ;
+SERCOM sercom3( SERCOM3 ) ;

variants/pixeltrinkey_m0/variant.h

@@ -0,0 +1,189 @@
+/*
+  Copyright (c) 2014-2015 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 _VARIANT_PIXELTRINKEY_ZERO_
+#define _VARIANT_PIXELTRINKEY_ZERO_
+
+// The definitions here needs a SAMD core >=1.6.10
+#define ARDUINO_SAMD_VARIANT_COMPLIANCE 10610
+
+/*----------------------------------------------------------------------------
+ *        Definitions
+ *----------------------------------------------------------------------------*/
+
+/** Frequency of the board main oscillator */
+#define VARIANT_MAINOSC		(32768ul)
+
+/** Master clock frequency */
+#define VARIANT_MCK	(F_CPU)
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+#include "SERCOM.h"
+#include "Uart.h"
+#endif // __cplusplus
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+
+/*----------------------------------------------------------------------------
+ *        Pins
+ *----------------------------------------------------------------------------*/
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT           (7u)
+#define NUM_DIGITAL_PINS     (4u)
+#define NUM_ANALOG_INPUTS    (1u)
+#define NUM_ANALOG_OUTPUTS   (1u)
+#define analogInputToDigitalPin(p)  (p)
+
+#define digitalPinToPort(P)        ( &(PORT->Group[g_APinDescription[P].ulPort]) )
+#define digitalPinToBitMask(P)     ( 1 << g_APinDescription[P].ulPin )
+//#define analogInPinToBit(P)        ( )
+#define portOutputRegister(port)   ( &(port->OUT.reg) )
+#define portInputRegister(port)    ( &(port->IN.reg) )
+#define portModeRegister(port)     ( &(port->DIR.reg) )
+#define digitalPinHasPWM(P)        ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )
+
+/*
+ * digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
+ * architecture. If you need to check if a pin supports PWM you must
+ * use digitalPinHasPWM(..).
+ *
+ * https://github.com/arduino/Arduino/issues/1833
+ */
+// #define digitalPinToTimer(P)
+
+// LEDs
+#define PIN_NEOPIXEL         (1u)
+#define NUM_NEOPIXEL         (1u)
+
+#define PIN_DATA             (2u)
+#define PIN_CLOCK            (3u)
+
+/*
+ * Analog pins
+ */
+#define PIN_A0               (0ul)
+#define PIN_DAC0             PIN_A0
+
+#define PIN_A6               (4ul)
+
+static const uint8_t A0  = PIN_A0;
+
+static const uint8_t A6  = PIN_A6;
+
+#define ADC_RESOLUTION		12
+
+
+/*
+ * SPI Interfaces
+ */
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         (4ul) // off 3-pin JST, broken out
+#define PIN_SPI_MOSI         (2ul)
+#define PIN_SPI_SCK          (3ul)
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_2
+
+static const uint8_t SS	  = (5ul); // not actually broken out
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
+
+/*
+ * Wire Interfaces, fake just for compilation
+ */
+#define WIRE_INTERFACES_COUNT 1
+
+#define PIN_WIRE_SDA         (2u)
+#define PIN_WIRE_SCL         (3u)
+#define PERIPH_WIRE          sercom0
+#define WIRE_IT_HANDLER      SERCOM0_Handler
+
+static const uint8_t SDA = PIN_WIRE_SDA;
+static const uint8_t SCL = PIN_WIRE_SCL;
+
+/*
+ * USB
+ */
+#define PIN_USB_HOST_ENABLE (5ul)
+#define PIN_USB_DM          (6ul)
+#define PIN_USB_DP          (7ul)
+/*
+ * I2S Interfaces
+ */
+#define I2S_INTERFACES_COUNT 0
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+
+/*	=========================
+ *	===== SERCOM DEFINITION
+ *	=========================
+*/
+extern SERCOM sercom0;
+extern SERCOM sercom1;
+extern SERCOM sercom2;
+extern SERCOM sercom3;
+extern SERCOM sercom4;
+extern SERCOM sercom5;
+
+
+#endif
+
+// These serial port names are intended to allow libraries and architecture-neutral
+// sketches to automatically default to the correct port name for a particular type
+// of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+// the first hardware serial port whose RX/TX pins are not dedicated to another use.
+//
+// SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
+//
+// SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
+//
+// SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
+//
+// SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
+//
+// SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
+//                            pins are NOT connected to anything by default.
+#define SERIAL_PORT_USBVIRTUAL      Serial
+#define SERIAL_PORT_MONITOR         Serial
+// Serial has no physical pins broken out, so it's not listed as HARDWARE port
+#define SERIAL_PORT_HARDWARE        Serial1
+#define SERIAL_PORT_HARDWARE_OPEN   Serial1
+
+#endif /* _VARIANT_ARDUINO_ZERO_ */
+

variants/proxlighttrinkey_m0/variant.cpp

@@ -41,7 +41,7 @@ const PinDescription g_APinDescription[]=
   // Interrupt D6
   { PORTA,  0, PIO_DIGITAL, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel,  PWM2_CH0, TCC2_CH0, EXTERNAL_INT_0 },
   
-  // USB pins
+  // USB pins D7, D8, D9
   { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
   { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
   { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP

variants/proxlighttrinkey_m0/variant.h

@@ -103,8 +103,21 @@ static const uint8_t A2  = PIN_A2;
 
 /*
  * SPI Interfaces
+ * Fake SPI Interface just so we can compile
  */
-#define SPI_INTERFACES_COUNT 0
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
 
 /*
  * Wire Interfaces

variants/pyportal_m4/variant.h

@@ -160,7 +160,7 @@ static const uint8_t ATN = PIN_ATN;
 #define PAD_SPI_TX           SPI_PAD_0_SCK_1
 #define PAD_SPI_RX           SERCOM_RX_PAD_2
 
-static const uint8_t SS	  = PIN_A2;       // ???
+static const uint8_t SS	  = 32;
 static const uint8_t MOSI = PIN_SPI_MOSI;
 static const uint8_t MISO = PIN_SPI_MISO;
 static const uint8_t SCK  = PIN_SPI_SCK;

variants/pyportal_m4_titano/variant.h

@@ -160,7 +160,7 @@ static const uint8_t ATN = PIN_ATN;
 #define PAD_SPI_TX           SPI_PAD_0_SCK_1
 #define PAD_SPI_RX           SERCOM_RX_PAD_2
 
-static const uint8_t SS	  = PIN_A2;       // ???
+static const uint8_t SS	  = 32;
 static const uint8_t MOSI = PIN_SPI_MOSI;
 static const uint8_t MISO = PIN_SPI_MISO;
 static const uint8_t SCK  = PIN_SPI_SCK;

variants/qtpy_m0/variant.cpp

@@ -23,14 +23,14 @@
  */
 const PinDescription g_APinDescription[]=
 {
-  { PORTA,  2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel0, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_2 }, // A0 / D0 / DAC
+  { PORTA,  2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // A0 / D0 / DAC
   { PORTA,  3, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel1, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3 }, // A1 / D1 / AREF
   { PORTA,  4, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel4, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_4 }, // A2 / D2 / PWM
   { PORTA,  5, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel5, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_5 }, // A3 / D3 / PWM
 
   // I2C SDA & SCL
-  { PORTA, 16, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH6, TCC0_CH6, EXTERNAL_INT_0 }, // D4 / SDA / PWM
-  { PORTA, 17, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH7, TCC0_CH7, EXTERNAL_INT_1 }, // D5 / SCL / PWM
+  { PORTA, 16, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_0 }, // D4 / SDA / PWM
+  { PORTA, 17, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH1, TCC2_CH1, EXTERNAL_INT_1 }, // D5 / SCL / PWM
 
   // UART TX & RX
   { PORTA,  6, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // A6 / D6 / TX / PWM

variants/rotarytrinkey_m0/variant.h

@@ -104,8 +104,21 @@ static const uint8_t A2  = PIN_A2;
 
 /*
  * SPI Interfaces
+ * Fake SPI Interface just so we can compile
  */
-#define SPI_INTERFACES_COUNT 0
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
 
 /*
  * Wire Interfaces

variants/sht4xtrinkey_m0/debug_scripts/variant.gdb

@@ -0,0 +1,31 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# Define 'reset' command
+define reset
+
+info reg
+
+break main
+
+# End of 'reset' command
+end
+
+target remote | openocd -c "interface cmsis-dap" -c "set CHIPNAME at91samd21e18" -f target/at91samdXX.cfg -c "gdb_port pipe; log_output openocd.log"

variants/sht4xtrinkey_m0/linker_scripts/gcc/flash_with_bootloader.ld

@@ -0,0 +1,216 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000+0x2000, LENGTH = 0x00040000-0x2000 /* First 8KB used by bootloader */
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.sketch_boot))
+
+		. = ALIGN(0x2000);
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM);
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/sht4xtrinkey_m0/linker_scripts/gcc/flash_without_bootloader.ld

@@ -0,0 +1,214 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __ram_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM) ;
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/sht4xtrinkey_m0/openocd_scripts/sht4xtrinkey_m0.cfg

@@ -0,0 +1,28 @@
+#
+#  Adafruit ItsyBitsy M0 OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# chip name
+set CHIPNAME at91samd21e18
+set ENDIAN little
+
+# choose a port here
+set telnet_port 0
+
+source [find target/at91samdXX.cfg]

variants/sht4xtrinkey_m0/pins_arduino.h

@@ -0,0 +1,21 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+// API compatibility
+#include "variant.h"
+

variants/sht4xtrinkey_m0/variant.cpp

@@ -0,0 +1,52 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "Arduino.h"
+/*
+ * Pins descriptions
+ */
+const PinDescription g_APinDescription[]=
+{
+  // Fake DAC A0 pin just so we can compile stuff
+  { PORTA,  2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel0, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_2 }, // A0 / D0 / DAC  
+
+  // touch / A1
+  { PORTA,  7, PIO_ANALOG, (PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // TCC1/WO[1]
+
+  // NeoPixel / D2
+  { PORTA, 3, PIO_ANALOG, PIN_ATTR_ANALOG, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+
+  // I2C SDA D3 & SCL D4
+  { PORTA, 4, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // D4 / SDA / PWM
+  { PORTA, 5, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // D5 / SCL / PWM
+
+  // USB pins D5, D6, D7
+  { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
+  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
+  { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP
+
+} ;
+
+const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;
+
+// Multi-serial objects instantiation
+SERCOM sercom0( SERCOM0 ) ;
+SERCOM sercom1( SERCOM1 ) ;
+SERCOM sercom2( SERCOM2 ) ;
+SERCOM sercom3( SERCOM3 ) ;

variants/sht4xtrinkey_m0/variant.h

@@ -0,0 +1,188 @@
+/*
+  Copyright (c) 2014-2015 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 _VARIANT_SHT4XTRINKEY_ZERO_
+#define _VARIANT_SHT4XTRINKEY_ZERO_
+
+// The definitions here needs a SAMD core >=1.6.10
+#define ARDUINO_SAMD_VARIANT_COMPLIANCE 10610
+
+/*----------------------------------------------------------------------------
+ *        Definitions
+ *----------------------------------------------------------------------------*/
+
+/** Frequency of the board main oscillator */
+#define VARIANT_MAINOSC		(32768ul)
+
+/** Master clock frequency */
+#define VARIANT_MCK	(F_CPU)
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+#include "SERCOM.h"
+#include "Uart.h"
+#endif // __cplusplus
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+
+/*----------------------------------------------------------------------------
+ *        Pins
+ *----------------------------------------------------------------------------*/
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT           (10u)
+#define NUM_DIGITAL_PINS     (6u)
+#define NUM_ANALOG_INPUTS    (2u)
+#define NUM_ANALOG_OUTPUTS   (1u)
+#define analogInputToDigitalPin(p)  (p)
+
+#define digitalPinToPort(P)        ( &(PORT->Group[g_APinDescription[P].ulPort]) )
+#define digitalPinToBitMask(P)     ( 1 << g_APinDescription[P].ulPin )
+//#define analogInPinToBit(P)        ( )
+#define portOutputRegister(port)   ( &(port->OUT.reg) )
+#define portInputRegister(port)    ( &(port->IN.reg) )
+#define portModeRegister(port)     ( &(port->DIR.reg) )
+#define digitalPinHasPWM(P)        ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )
+
+/*
+ * digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
+ * architecture. If you need to check if a pin supports PWM you must
+ * use digitalPinHasPWM(..).
+ *
+ * https://github.com/arduino/Arduino/issues/1833
+ */
+// #define digitalPinToTimer(P)
+
+// LEDs
+#define PIN_NEOPIXEL         (2u)
+#define NUM_NEOPIXEL         (1u)
+
+// TOUCH PINS
+#define PIN_TOUCH       1
+
+/*
+ * Analog pins
+ */
+#define PIN_A0               (0ul)
+#define PIN_A1               (1)
+#define PIN_DAC0             PIN_A0
+
+static const uint8_t A0  = PIN_A0;
+static const uint8_t A1  = PIN_A1;
+
+#define ADC_RESOLUTION		12
+
+
+/*
+ * SPI Interfaces
+ * Fake SPI Interface just so we can compile
+ */
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
+
+/*
+ * Wire Interfaces
+ */
+#define WIRE_INTERFACES_COUNT 1
+
+#define PIN_WIRE_SDA         (3u)
+#define PIN_WIRE_SCL         (4u)
+#define PERIPH_WIRE          sercom0
+#define WIRE_IT_HANDLER      SERCOM0_Handler
+
+static const uint8_t SDA = PIN_WIRE_SDA;
+static const uint8_t SCL = PIN_WIRE_SCL;
+
+/*
+ * USB
+ */
+#define PIN_USB_HOST_ENABLE (5ul)
+#define PIN_USB_DM          (6ul)
+#define PIN_USB_DP          (7ul)
+/*
+ * I2S Interfaces
+ */
+#define I2S_INTERFACES_COUNT 0
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+
+/*	=========================
+ *	===== SERCOM DEFINITION
+ *	=========================
+*/
+extern SERCOM sercom0;
+extern SERCOM sercom1;
+extern SERCOM sercom2;
+extern SERCOM sercom3;
+extern SERCOM sercom4;
+extern SERCOM sercom5;
+
+
+#endif
+
+// These serial port names are intended to allow libraries and architecture-neutral
+// sketches to automatically default to the correct port name for a particular type
+// of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+// the first hardware serial port whose RX/TX pins are not dedicated to another use.
+//
+// SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
+//
+// SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
+//
+// SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
+//
+// SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
+//
+// SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
+//                            pins are NOT connected to anything by default.
+#define SERIAL_PORT_USBVIRTUAL      Serial
+#define SERIAL_PORT_MONITOR         Serial
+// Serial has no physical pins broken out, so it's not listed as HARDWARE port
+#define SERIAL_PORT_HARDWARE        Serial1
+#define SERIAL_PORT_HARDWARE_OPEN   Serial1
+
+#endif /* _VARIANT_ARDUINO_ZERO_ */
+

variants/slidetrinkey_m0/variant.h

@@ -101,8 +101,21 @@ static const uint8_t A2  = PIN_A2;
 
 /*
  * SPI Interfaces
+ * Fake SPI Interface just so we can compile
  */
-#define SPI_INTERFACES_COUNT 0
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_A0
+#define PIN_SPI_MOSI         PIN_A0
+#define PIN_SPI_SCK          PIN_A0
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_0
+
+static const uint8_t SS	  = PIN_A0;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
 
 /*
  * Wire Interfaces

variants/thumbsticktrinkey_m0/debug_scripts/variant.gdb

@@ -0,0 +1,31 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# Define 'reset' command
+define reset
+
+info reg
+
+break main
+
+# End of 'reset' command
+end
+
+target remote | openocd -c "interface cmsis-dap" -c "set CHIPNAME at91samd21e18" -f target/at91samdXX.cfg -c "gdb_port pipe; log_output openocd.log"

variants/thumbsticktrinkey_m0/linker_scripts/gcc/flash_with_bootloader.ld

@@ -0,0 +1,216 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000+0x2000, LENGTH = 0x00040000-0x2000 /* First 8KB used by bootloader */
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.sketch_boot))
+
+		. = ALIGN(0x2000);
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM);
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/thumbsticktrinkey_m0/linker_scripts/gcc/flash_without_bootloader.ld

@@ -0,0 +1,214 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __ram_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM) ;
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/thumbsticktrinkey_m0/openocd_scripts/sht4xtrinkey_m0.cfg

@@ -0,0 +1,28 @@
+#
+#  Adafruit ItsyBitsy M0 OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# chip name
+set CHIPNAME at91samd21e18
+set ENDIAN little
+
+# choose a port here
+set telnet_port 0
+
+source [find target/at91samdXX.cfg]

variants/thumbsticktrinkey_m0/pins_arduino.h

@@ -0,0 +1,21 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+// API compatibility
+#include "variant.h"
+

variants/thumbsticktrinkey_m0/variant.cpp

@@ -0,0 +1,52 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "Arduino.h"
+/*
+ * Pins descriptions
+ */
+const PinDescription g_APinDescription[]=
+{
+  // X (D0)
+  { PORTA,  9, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel17, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_9 },
+  // Y (D1)
+  { PORTA, 11, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel19, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 },
+
+  // Button 1 (D2)
+  { PORTA, 6, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 },
+  // Button 2 (D3)
+  { PORTA, 7, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 },
+
+  // NeoPixel (D4)
+  { PORTA,  0, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_6 }, // TCC1/WO[0]
+
+  // USB pins D5, D6, D7
+  { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
+  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
+  { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP
+
+} ;
+
+const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;
+
+// Multi-serial objects instantiation
+SERCOM sercom0( SERCOM0 ) ;
+SERCOM sercom1( SERCOM1 ) ;
+SERCOM sercom2( SERCOM2 ) ;
+SERCOM sercom3( SERCOM3 ) ;

variants/thumbsticktrinkey_m0/variant.h

@@ -0,0 +1,171 @@
+/*
+  Copyright (c) 2014-2015 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 _VARIANT_THUMBSTICKTRINKEY_ZERO_
+#define _VARIANT_THUMBSTICKTRINKEY_ZERO_
+
+// The definitions here needs a SAMD core >=1.6.10
+#define ARDUINO_SAMD_VARIANT_COMPLIANCE 10610
+
+/*----------------------------------------------------------------------------
+ *        Definitions
+ *----------------------------------------------------------------------------*/
+
+/** Frequency of the board main oscillator */
+#define VARIANT_MAINOSC		(32768ul)
+
+/** Master clock frequency */
+#define VARIANT_MCK	(F_CPU)
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+#include "SERCOM.h"
+#include "Uart.h"
+#endif // __cplusplus
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+
+/*----------------------------------------------------------------------------
+ *        Pins
+ *----------------------------------------------------------------------------*/
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT           (10u)
+#define NUM_DIGITAL_PINS     (7u)
+#define NUM_ANALOG_INPUTS    (6u)
+#define NUM_ANALOG_OUTPUTS   (1u)
+#define analogInputToDigitalPin(p)  (p)
+
+#define digitalPinToPort(P)        ( &(PORT->Group[g_APinDescription[P].ulPort]) )
+#define digitalPinToBitMask(P)     ( 1 << g_APinDescription[P].ulPin )
+//#define analogInPinToBit(P)        ( )
+#define portOutputRegister(port)   ( &(port->OUT.reg) )
+#define portInputRegister(port)    ( &(port->IN.reg) )
+#define portModeRegister(port)     ( &(port->DIR.reg) )
+#define digitalPinHasPWM(P)        ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )
+
+/*
+ * digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
+ * architecture. If you need to check if a pin supports PWM you must
+ * use digitalPinHasPWM(..).
+ *
+ * https://github.com/arduino/Arduino/issues/1833
+ */
+// #define digitalPinToTimer(P)
+
+// LEDs
+#define PIN_NEOPIXEL         (4u)
+#define NUM_NEOPIXEL         (1u)
+
+#define PIN_JOY_X            (0ul)
+#define PIN_JOY_Y            (1ul)
+#define PIN_BUTTON1          (2ul)
+#define PIN_BUTTON2          (3ul)
+
+/*
+ * Analog pins
+ */
+#define PIN_A0               (0ul)
+#define PIN_A1               (1ul)
+#define PIN_DAC0             PIN_A0
+
+static const uint8_t A0  = PIN_A0;
+static const uint8_t A1  = PIN_A1;
+
+#define ADC_RESOLUTION		12
+
+
+/*
+ * SPI Interfaces
+ */
+#define SPI_INTERFACES_COUNT 0
+
+
+/*
+ * Wire Interfaces
+ */
+#define WIRE_INTERFACES_COUNT 0
+
+
+/*
+ * USB
+ */
+#define PIN_USB_HOST_ENABLE (5ul)
+#define PIN_USB_DM          (6ul)
+#define PIN_USB_DP          (7ul)
+/*
+ * I2S Interfaces
+ */
+#define I2S_INTERFACES_COUNT 0
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+
+/*	=========================
+ *	===== SERCOM DEFINITION
+ *	=========================
+*/
+extern SERCOM sercom0;
+extern SERCOM sercom1;
+extern SERCOM sercom2;
+extern SERCOM sercom3;
+extern SERCOM sercom4;
+extern SERCOM sercom5;
+
+
+#endif
+
+// These serial port names are intended to allow libraries and architecture-neutral
+// sketches to automatically default to the correct port name for a particular type
+// of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+// the first hardware serial port whose RX/TX pins are not dedicated to another use.
+//
+// SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
+//
+// SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
+//
+// SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
+//
+// SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
+//
+// SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
+//                            pins are NOT connected to anything by default.
+#define SERIAL_PORT_USBVIRTUAL      Serial
+#define SERIAL_PORT_MONITOR         Serial
+// Serial has no physical pins broken out, so it's not listed as HARDWARE port
+#define SERIAL_PORT_HARDWARE        Serial1
+#define SERIAL_PORT_HARDWARE_OPEN   Serial1
+
+#endif /* _VARIANT_ARDUINO_ZERO_ */
+

variants/trinket_m0/variant.h

@@ -85,8 +85,12 @@ extern "C"
 #define PIN_LED3             PIN_LED_TXL
 #define LED_BUILTIN          PIN_LED_13
 // DotStar LED
-#define INTERNAL_DS_DATA     7
-#define INTERNAL_DS_CLK      8
+#define INTERNAL_DS_DATA     (7u)
+#define INTERNAL_DS_CLK      (8u)
+#define PIN_DOTSTAR_DATA     (7u)
+#define PIN_DOTSTAR_CLK      (8u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
+#define DOTSTAR_NUM          (1u)
 
 /*
  * Analog pins

variants/trrstrinkey_m0/debug_scripts/variant.gdb

@@ -0,0 +1,31 @@
+#
+#  Arduino Zero OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# Define 'reset' command
+define reset
+
+info reg
+
+break main
+
+# End of 'reset' command
+end
+
+target remote | openocd -c "interface cmsis-dap" -c "set CHIPNAME at91samd21e18" -f target/at91samdXX.cfg -c "gdb_port pipe; log_output openocd.log"

variants/trrstrinkey_m0/linker_scripts/gcc/flash_with_bootloader.ld

@@ -0,0 +1,216 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000+0x2000, LENGTH = 0x00040000-0x2000 /* First 8KB used by bootloader */
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.sketch_boot))
+
+		. = ALIGN(0x2000);
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM);
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/trrstrinkey_m0/linker_scripts/gcc/flash_without_bootloader.ld

@@ -0,0 +1,214 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ *   FLASH.ORIGIN: starting address of flash
+ *   FLASH.LENGTH: length of flash
+ *   RAM.ORIGIN: starting address of RAM bank 0
+ *   RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __copy_table_start__
+ *   __copy_table_end__
+ *   __zero_table_start__
+ *   __zero_table_end__
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ *   __ram_end__
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+	.text :
+	{
+		__text_start__ = .;
+
+		KEEP(*(.isr_vector))
+		*(.text*)
+
+		KEEP(*(.init))
+		KEEP(*(.fini))
+
+		/* .ctors */
+		*crtbegin.o(.ctors)
+		*crtbegin?.o(.ctors)
+		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+		*(SORT(.ctors.*))
+		*(.ctors)
+
+		/* .dtors */
+ 		*crtbegin.o(.dtors)
+ 		*crtbegin?.o(.dtors)
+ 		*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ 		*(SORT(.dtors.*))
+ 		*(.dtors)
+
+		*(.rodata*)
+
+		KEEP(*(.eh_frame*))
+	} > FLASH
+
+	.ARM.extab :
+	{
+		*(.ARM.extab* .gnu.linkonce.armextab.*)
+	} > FLASH
+
+	__exidx_start = .;
+	.ARM.exidx :
+	{
+		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
+	} > FLASH
+	__exidx_end = .;
+
+	/* To copy multiple ROM to RAM sections,
+	 * uncomment .copy.table section and,
+	 * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.copy.table :
+	{
+		. = ALIGN(4);
+		__copy_table_start__ = .;
+		LONG (__etext)
+		LONG (__data_start__)
+		LONG (__data_end__ - __data_start__)
+		LONG (__etext2)
+		LONG (__data2_start__)
+		LONG (__data2_end__ - __data2_start__)
+		__copy_table_end__ = .;
+	} > FLASH
+	*/
+
+	/* To clear multiple BSS sections,
+	 * uncomment .zero.table section and,
+	 * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+	/*
+	.zero.table :
+	{
+		. = ALIGN(4);
+		__zero_table_start__ = .;
+		LONG (__bss_start__)
+		LONG (__bss_end__ - __bss_start__)
+		LONG (__bss2_start__)
+		LONG (__bss2_end__ - __bss2_start__)
+		__zero_table_end__ = .;
+	} > FLASH
+	*/
+
+	__etext = .;
+
+	.data : AT (__etext)
+	{
+		__data_start__ = .;
+		*(vtable)
+		*(.data*)
+
+		. = ALIGN(4);
+		/* preinit data */
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP(*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+
+		. = ALIGN(4);
+		/* init data */
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array))
+		PROVIDE_HIDDEN (__init_array_end = .);
+
+
+		. = ALIGN(4);
+		/* finit data */
+		PROVIDE_HIDDEN (__fini_array_start = .);
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array))
+		PROVIDE_HIDDEN (__fini_array_end = .);
+
+		KEEP(*(.jcr*))
+		. = ALIGN(16);
+		/* All data end */
+		__data_end__ = .;
+
+	} > RAM
+
+	.bss :
+	{
+		. = ALIGN(4);
+		__bss_start__ = .;
+		*(.bss*)
+		*(COMMON)
+		. = ALIGN(4);
+		__bss_end__ = .;
+	} > RAM
+
+	.heap (COPY):
+	{
+		__end__ = .;
+		PROVIDE(end = .);
+		*(.heap*)
+		__HeapLimit = .;
+	} > RAM
+
+	/* .stack_dummy section doesn't contains any symbols. It is only
+	 * used for linker to calculate size of stack sections, and assign
+	 * values to stack symbols later */
+	.stack_dummy (COPY):
+	{
+		*(.stack*)
+	} > RAM
+
+	/* Set stack top to end of RAM, and stack limit move down by
+	 * size of stack_dummy section */
+	__StackTop = ORIGIN(RAM) + LENGTH(RAM) ;
+	__StackLimit = __StackTop - SIZEOF(.stack_dummy);
+	PROVIDE(__stack = __StackTop);
+
+	__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;
+
+	/* Check if data + heap + stack exceeds RAM limit */
+	ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}

variants/trrstrinkey_m0/openocd_scripts/sht4xtrinkey_m0.cfg

@@ -0,0 +1,28 @@
+#
+#  Adafruit ItsyBitsy M0 OpenOCD script.
+#
+#  Copyright (c) 2014-2015 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
+#
+
+# chip name
+set CHIPNAME at91samd21e18
+set ENDIAN little
+
+# choose a port here
+set telnet_port 0
+
+source [find target/at91samdXX.cfg]

variants/trrstrinkey_m0/pins_arduino.h

@@ -0,0 +1,21 @@
+/*
+  Copyright (c) 2014-2015 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
+*/
+
+// API compatibility
+#include "variant.h"
+

variants/trrstrinkey_m0/variant.cpp

@@ -0,0 +1,64 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "Arduino.h"
+/*
+ * Pins descriptions
+ */
+const PinDescription g_APinDescription[]=
+{
+  // TRRS Tip, D0 / DAC / A0
+  { PORTA, 2, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 },
+  // TRRS Tip Switch, D1, A1
+  { PORTA, 3, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel1, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3 },
+
+  // TRRS Ring 1, D2, A2
+  { PORTA, 6, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 },
+  // TRRS Ring 1 Switch, D3, A3
+  { PORTA, 7, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER|PIN_ATTR_ANALOG), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 },
+
+  // TRRS Ring2, D4, A4
+  { PORTA, 4, PIO_ANALOG, PIN_ATTR_DIGITAL, ADC_Channel4, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 },
+
+  // TRRS Sleeve, D5, A5
+  { PORTA, 5, PIO_ANALOG, PIN_ATTR_DIGITAL, ADC_Channel5, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 },
+
+  // Internal NeoPixel / D6
+  { PORTA, 1, PIO_ANALOG, PIN_ATTR_ANALOG, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
+
+  // QT SDA D7
+  { PORTA,  8, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel16, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_NMI },  // TCC0/WO[0]
+
+  // QT SCL D8
+  { PORTA,  9, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel17, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_9 }, // TCC0/WO[1]
+
+  // USB pins D9, D10, D11
+  { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
+  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
+  { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP
+
+} ;
+
+const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;
+
+// Multi-serial objects instantiation
+SERCOM sercom0( SERCOM0 ) ;
+SERCOM sercom1( SERCOM1 ) ;
+SERCOM sercom2( SERCOM2 ) ;
+SERCOM sercom3( SERCOM3 ) ;

variants/trrstrinkey_m0/variant.h

@@ -0,0 +1,207 @@
+/*
+  Copyright (c) 2014-2015 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 _VARIANT_TRRSTRINKEY_ZERO_
+#define _VARIANT_TRRSTRINKEY_ZERO_
+
+// The definitions here needs a SAMD core >=1.6.10
+#define ARDUINO_SAMD_VARIANT_COMPLIANCE 10610
+
+/*----------------------------------------------------------------------------
+ *        Definitions
+ *----------------------------------------------------------------------------*/
+
+/** Frequency of the board main oscillator */
+#define VARIANT_MAINOSC		(32768ul)
+
+/** Master clock frequency */
+#define VARIANT_MCK	(F_CPU)
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+#include "SERCOM.h"
+#include "Uart.h"
+#endif // __cplusplus
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+
+/*----------------------------------------------------------------------------
+ *        Pins
+ *----------------------------------------------------------------------------*/
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT           (10u)
+#define NUM_DIGITAL_PINS     (7u)
+#define NUM_ANALOG_INPUTS    (6u)
+#define NUM_ANALOG_OUTPUTS   (1u)
+#define analogInputToDigitalPin(p)  (p)
+
+#define digitalPinToPort(P)        ( &(PORT->Group[g_APinDescription[P].ulPort]) )
+#define digitalPinToBitMask(P)     ( 1 << g_APinDescription[P].ulPin )
+//#define analogInPinToBit(P)        ( )
+#define portOutputRegister(port)   ( &(port->OUT.reg) )
+#define portInputRegister(port)    ( &(port->IN.reg) )
+#define portModeRegister(port)     ( &(port->DIR.reg) )
+#define digitalPinHasPWM(P)        ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )
+
+/*
+ * digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
+ * architecture. If you need to check if a pin supports PWM you must
+ * use digitalPinHasPWM(..).
+ *
+ * https://github.com/arduino/Arduino/issues/1833
+ */
+// #define digitalPinToTimer(P)
+
+// LEDs
+#define PIN_NEOPIXEL         (6u)
+#define NUM_NEOPIXEL         (1u)
+
+#define PIN_TIP              (0ul)
+#define PIN_TIP_SWITCH       (1ul)
+#define PIN_RING1            (2ul)
+#define PIN_RING1_SWITCH     (3ul)
+#define PIN_RING2            (4ul)
+#define PIN_SLEEVE           (5ul)
+
+/*
+ * Analog pins
+ */
+#define PIN_A0               (0ul)
+#define PIN_A1               (1ul)
+#define PIN_A2               (2ul)
+#define PIN_A3               (3ul)
+#define PIN_A4               (4ul)
+#define PIN_A5               (5ul)
+
+#define PIN_DAC0             PIN_A0
+
+static const uint8_t A0  = PIN_A0;
+static const uint8_t A1  = PIN_A1;
+static const uint8_t A2  = PIN_A2;
+static const uint8_t A3  = PIN_A3;
+static const uint8_t A4  = PIN_A4;
+static const uint8_t A5  = PIN_A5;
+
+#define ADC_RESOLUTION		12
+
+
+/*
+ * SPI Interfaces
+ */
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         PIN_RING1
+#define PIN_SPI_MOSI         PIN_RING2
+#define PIN_SPI_SCK          PIN_SLEEVE
+#define PERIPH_SPI           sercom0
+#define PAD_SPI_TX           SPI_PAD_0_SCK_1
+#define PAD_SPI_RX           SERCOM_RX_PAD_2
+
+static const uint8_t SS	  = PIN_TIP;
+static const uint8_t MOSI = PIN_SPI_MOSI;
+static const uint8_t MISO = PIN_SPI_MISO;
+static const uint8_t SCK  = PIN_SPI_SCK;
+
+/*
+ * Wire Interfaces, fake just for compilation
+ */
+#define WIRE_INTERFACES_COUNT 2
+
+// QT Port
+#define PIN_WIRE_SDA         (7ul)
+#define PIN_WIRE_SCL         (8ul)
+#define PERIPH_WIRE          sercom2
+#define WIRE_IT_HANDLER      SERCOM2_Handler
+
+// second, sekret I2C on the headphone jack
+#define PIN_WIRE1_SDA         PIN_RING2
+#define PIN_WIRE1_SCL         PIN_SLEEVE
+#define PERIPH_WIRE1          sercom0
+#define WIRE1_IT_HANDLER      SERCOM0_Handler
+
+static const uint8_t SDA = PIN_WIRE_SDA;
+static const uint8_t SCL = PIN_WIRE_SCL;
+
+/*
+ * USB
+ */
+#define PIN_USB_HOST_ENABLE (9ul)
+#define PIN_USB_DM          (10ul)
+#define PIN_USB_DP          (11ul)
+/*
+ * I2S Interfaces
+ */
+#define I2S_INTERFACES_COUNT 0
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+
+/*	=========================
+ *	===== SERCOM DEFINITION
+ *	=========================
+*/
+extern SERCOM sercom0;
+extern SERCOM sercom1;
+extern SERCOM sercom2;
+extern SERCOM sercom3;
+extern SERCOM sercom4;
+extern SERCOM sercom5;
+
+
+#endif
+
+// These serial port names are intended to allow libraries and architecture-neutral
+// sketches to automatically default to the correct port name for a particular type
+// of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+// the first hardware serial port whose RX/TX pins are not dedicated to another use.
+//
+// SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
+//
+// SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
+//
+// SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
+//
+// SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
+//
+// SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
+//                            pins are NOT connected to anything by default.
+#define SERIAL_PORT_USBVIRTUAL      Serial
+#define SERIAL_PORT_MONITOR         Serial
+// Serial has no physical pins broken out, so it's not listed as HARDWARE port
+#define SERIAL_PORT_HARDWARE        Serial1
+#define SERIAL_PORT_HARDWARE_OPEN   Serial1
+
+#endif /* _VARIANT_ARDUINO_ZERO_ */
+