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

@@ -9,29 +9,25 @@ jobs:
       matrix:
         board:
           # Alphabetical order
-          - 'metro_m0'
-          - 'hallowing'
           - 'circuitplayground_m0'
+          - 'feather_m4_can'
+          - 'hallowing'
+          - 'hallowing_m4'
+          - 'metro_m0'
           - 'metro_m4'
           - 'pybadge_m4'
           - 'pygamer_m4'
-          - 'hallowing_m4'
           - 'pyportal_m4'
           - 'pyportal_m4_titano'
-          - 'feather_m4_can'
+          # with TinyUSB
           - 'metro_m0:usbstack=tinyusb'
           - 'metro_m4:speed=120,usbstack=tinyusb'
 
     runs-on: ubuntu-latest
     
     steps:
-    - name: Setup Python
-      uses: actions/setup-python@v4
-      with:
-        python-version: '3.x'
-        
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         submodules: 'true'
 

boards.txt

@@ -817,6 +817,192 @@ adafruit_sht4xtrinkey_m0.menu.debug.on=On
 adafruit_sht4xtrinkey_m0.menu.debug.on.build.flags.debug=-g
 
 
+# -----------------------------------
+# Adafruit Pixel Trinkey M0 (SAMD21)
+# -----------------------------------
+adafruit_pixeltrinkey_m0.name=Adafruit Pixel Trinkey M0 (SAMD21)
+
+# VID/PID for Bootloader, Arduino & CircuitPython
+adafruit_pixeltrinkey_m0.vid.0=0x239A
+adafruit_pixeltrinkey_m0.pid.0=0x8155
+adafruit_pixeltrinkey_m0.vid.1=0x239A
+adafruit_pixeltrinkey_m0.pid.1=0x0155
+adafruit_pixeltrinkey_m0.vid.2=0x239A
+adafruit_pixeltrinkey_m0.pid.2=0x8156
+
+# Upload
+adafruit_pixeltrinkey_m0.upload.tool=bossac18
+adafruit_pixeltrinkey_m0.upload.protocol=sam-ba
+adafruit_pixeltrinkey_m0.upload.maximum_size=262144
+adafruit_pixeltrinkey_m0.upload.offset=0x2000
+adafruit_pixeltrinkey_m0.upload.use_1200bps_touch=true
+adafruit_pixeltrinkey_m0.upload.wait_for_upload_port=true
+adafruit_pixeltrinkey_m0.upload.native_usb=true
+
+# Build
+adafruit_pixeltrinkey_m0.build.mcu=cortex-m0plus
+adafruit_pixeltrinkey_m0.build.f_cpu=48000000L
+adafruit_pixeltrinkey_m0.build.usb_product="Pixel Trinkey M0"
+adafruit_pixeltrinkey_m0.build.usb_manufacturer="Adafruit"
+adafruit_pixeltrinkey_m0.build.board=PIXELTRINKEY_M0
+adafruit_pixeltrinkey_m0.build.core=arduino
+adafruit_pixeltrinkey_m0.build.extra_flags=-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_PIXELTRINKEY_M0 -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS {build.usb_flags}
+adafruit_pixeltrinkey_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
+adafruit_pixeltrinkey_m0.build.openocdscript=scripts/openocd/daplink_samd21.cfg
+adafruit_pixeltrinkey_m0.build.variant=pixeltrinkey_m0
+adafruit_pixeltrinkey_m0.build.variant_system_lib=
+adafruit_pixeltrinkey_m0.build.vid=0x239A
+adafruit_pixeltrinkey_m0.build.pid=0x8155
+adafruit_pixeltrinkey_m0.bootloader.tool=openocd
+adafruit_pixeltrinkey_m0.bootloader.file=pixeltrinkey_m0/bootloader-pixeltrinkey_m0.bin
+
+# Menu: Optimization
+adafruit_pixeltrinkey_m0.menu.opt.small=Small (-Os) (standard)
+adafruit_pixeltrinkey_m0.menu.opt.small.build.flags.optimize=-Os
+adafruit_pixeltrinkey_m0.menu.opt.fast=Fast (-O2)
+adafruit_pixeltrinkey_m0.menu.opt.fast.build.flags.optimize=-O2
+adafruit_pixeltrinkey_m0.menu.opt.faster=Faster (-O3)
+adafruit_pixeltrinkey_m0.menu.opt.faster.build.flags.optimize=-O3
+adafruit_pixeltrinkey_m0.menu.opt.fastest=Fastest (-Ofast)
+adafruit_pixeltrinkey_m0.menu.opt.fastest.build.flags.optimize=-Ofast
+adafruit_pixeltrinkey_m0.menu.opt.dragons=Here be dragons (-Ofast -funroll-loops)
+adafruit_pixeltrinkey_m0.menu.opt.dragons.build.flags.optimize=-Ofast -funroll-loops
+
+# Menu: USB Stack
+adafruit_pixeltrinkey_m0.menu.usbstack.arduino=Arduino
+adafruit_pixeltrinkey_m0.menu.usbstack.tinyusb=TinyUSB
+adafruit_pixeltrinkey_m0.menu.usbstack.tinyusb.build.flags.usbstack=-DUSE_TINYUSB
+
+# Menu: Debug
+adafruit_pixeltrinkey_m0.menu.debug.off=Off
+adafruit_pixeltrinkey_m0.menu.debug.on=On
+adafruit_pixeltrinkey_m0.menu.debug.on.build.flags.debug=-g
+
+
+# -----------------------------------
+# Adafruit TRRS Trinkey M0 (SAMD21)
+# -----------------------------------
+adafruit_TRRStrinkey_m0.name=Adafruit TRRS Trinkey M0 (SAMD21)
+
+# VID/PID for Bootloader, Arduino & CircuitPython
+adafruit_TRRStrinkey_m0.vid.0=0x239A
+adafruit_TRRStrinkey_m0.pid.0=0x8157
+adafruit_TRRStrinkey_m0.vid.1=0x239A
+adafruit_TRRStrinkey_m0.pid.1=0x0157
+adafruit_TRRStrinkey_m0.vid.2=0x239A
+adafruit_TRRStrinkey_m0.pid.2=0x8158
+
+# Upload
+adafruit_TRRStrinkey_m0.upload.tool=bossac18
+adafruit_TRRStrinkey_m0.upload.protocol=sam-ba
+adafruit_TRRStrinkey_m0.upload.maximum_size=262144
+adafruit_TRRStrinkey_m0.upload.offset=0x2000
+adafruit_TRRStrinkey_m0.upload.use_1200bps_touch=true
+adafruit_TRRStrinkey_m0.upload.wait_for_upload_port=true
+adafruit_TRRStrinkey_m0.upload.native_usb=true
+
+# Build
+adafruit_TRRStrinkey_m0.build.mcu=cortex-m0plus
+adafruit_TRRStrinkey_m0.build.f_cpu=48000000L
+adafruit_TRRStrinkey_m0.build.usb_product="TRRS Trinkey M0"
+adafruit_TRRStrinkey_m0.build.usb_manufacturer="Adafruit"
+adafruit_TRRStrinkey_m0.build.board=TRRSTRINKEY_M0
+adafruit_TRRStrinkey_m0.build.core=arduino
+adafruit_TRRStrinkey_m0.build.extra_flags=-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_TRRSTRINKEY_M0 -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS {build.usb_flags}
+adafruit_TRRStrinkey_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
+adafruit_TRRStrinkey_m0.build.openocdscript=scripts/openocd/daplink_samd21.cfg
+adafruit_TRRStrinkey_m0.build.variant=trrstrinkey_m0
+adafruit_TRRStrinkey_m0.build.variant_system_lib=
+adafruit_TRRStrinkey_m0.build.vid=0x239A
+adafruit_TRRStrinkey_m0.build.pid=0x8157
+adafruit_TRRStrinkey_m0.bootloader.tool=openocd
+adafruit_TRRStrinkey_m0.bootloader.file=trrstrinkey_m0/bootloader-TRRStrinkey_m0.bin
+
+# Menu: Optimization
+adafruit_TRRStrinkey_m0.menu.opt.small=Small (-Os) (standard)
+adafruit_TRRStrinkey_m0.menu.opt.small.build.flags.optimize=-Os
+adafruit_TRRStrinkey_m0.menu.opt.fast=Fast (-O2)
+adafruit_TRRStrinkey_m0.menu.opt.fast.build.flags.optimize=-O2
+adafruit_TRRStrinkey_m0.menu.opt.faster=Faster (-O3)
+adafruit_TRRStrinkey_m0.menu.opt.faster.build.flags.optimize=-O3
+adafruit_TRRStrinkey_m0.menu.opt.fastest=Fastest (-Ofast)
+adafruit_TRRStrinkey_m0.menu.opt.fastest.build.flags.optimize=-Ofast
+adafruit_TRRStrinkey_m0.menu.opt.dragons=Here be dragons (-Ofast -funroll-loops)
+adafruit_TRRStrinkey_m0.menu.opt.dragons.build.flags.optimize=-Ofast -funroll-loops
+
+# Menu: USB Stack
+adafruit_TRRStrinkey_m0.menu.usbstack.arduino=Arduino
+adafruit_TRRStrinkey_m0.menu.usbstack.tinyusb=TinyUSB
+adafruit_TRRStrinkey_m0.menu.usbstack.tinyusb.build.flags.usbstack=-DUSE_TINYUSB
+
+# Menu: Debug
+adafruit_TRRStrinkey_m0.menu.debug.off=Off
+adafruit_TRRStrinkey_m0.menu.debug.on=On
+adafruit_TRRStrinkey_m0.menu.debug.on.build.flags.debug=-g
+
+
+# -----------------------------------
+# Adafruit Thumbstick Trinkey M0 (SAMD21)
+# -----------------------------------
+adafruit_thumbsticktrinkey_m0.name=Adafruit Thumbstick Trinkey M0 (SAMD21)
+
+# VID/PID for Bootloader, Arduino & CircuitPython
+adafruit_thumbsticktrinkey_m0.vid.0=0x239A
+adafruit_thumbsticktrinkey_m0.pid.0=0x8159
+adafruit_thumbsticktrinkey_m0.vid.1=0x239A
+adafruit_thumbsticktrinkey_m0.pid.1=0x0159
+adafruit_thumbsticktrinkey_m0.vid.2=0x239A
+adafruit_thumbsticktrinkey_m0.pid.2=0x8160
+
+# Upload
+adafruit_thumbsticktrinkey_m0.upload.tool=bossac18
+adafruit_thumbsticktrinkey_m0.upload.protocol=sam-ba
+adafruit_thumbsticktrinkey_m0.upload.maximum_size=262144
+adafruit_thumbsticktrinkey_m0.upload.offset=0x2000
+adafruit_thumbsticktrinkey_m0.upload.use_1200bps_touch=true
+adafruit_thumbsticktrinkey_m0.upload.wait_for_upload_port=true
+adafruit_thumbsticktrinkey_m0.upload.native_usb=true
+
+# Build
+adafruit_thumbsticktrinkey_m0.build.mcu=cortex-m0plus
+adafruit_thumbsticktrinkey_m0.build.f_cpu=48000000L
+adafruit_thumbsticktrinkey_m0.build.usb_product="Thumbstick Trinkey M0"
+adafruit_thumbsticktrinkey_m0.build.usb_manufacturer="Adafruit"
+adafruit_thumbsticktrinkey_m0.build.board=THUMBSTICKTRINKEY_M0
+adafruit_thumbsticktrinkey_m0.build.core=arduino
+adafruit_thumbsticktrinkey_m0.build.extra_flags=-D__SAMD21E18A__ -DCRYSTALLESS -DADAFRUIT_THUMBSTICKTRINKEY_M0 -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS {build.usb_flags}
+adafruit_thumbsticktrinkey_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
+adafruit_thumbsticktrinkey_m0.build.openocdscript=scripts/openocd/daplink_samd21.cfg
+adafruit_thumbsticktrinkey_m0.build.variant=thumbsticktrinkey_m0
+adafruit_thumbsticktrinkey_m0.build.variant_system_lib=
+adafruit_thumbsticktrinkey_m0.build.vid=0x239A
+adafruit_thumbsticktrinkey_m0.build.pid=0x8159
+adafruit_thumbsticktrinkey_m0.bootloader.tool=openocd
+adafruit_thumbsticktrinkey_m0.bootloader.file=thumbsticktrinkey_m0/bootloader-thumbsticktrinkey_m0.bin
+
+# Menu: Optimization
+adafruit_thumbsticktrinkey_m0.menu.opt.small=Small (-Os) (standard)
+adafruit_thumbsticktrinkey_m0.menu.opt.small.build.flags.optimize=-Os
+adafruit_thumbsticktrinkey_m0.menu.opt.fast=Fast (-O2)
+adafruit_thumbsticktrinkey_m0.menu.opt.fast.build.flags.optimize=-O2
+adafruit_thumbsticktrinkey_m0.menu.opt.faster=Faster (-O3)
+adafruit_thumbsticktrinkey_m0.menu.opt.faster.build.flags.optimize=-O3
+adafruit_thumbsticktrinkey_m0.menu.opt.fastest=Fastest (-Ofast)
+adafruit_thumbsticktrinkey_m0.menu.opt.fastest.build.flags.optimize=-Ofast
+adafruit_thumbsticktrinkey_m0.menu.opt.dragons=Here be dragons (-Ofast -funroll-loops)
+adafruit_thumbsticktrinkey_m0.menu.opt.dragons.build.flags.optimize=-Ofast -funroll-loops
+
+# Menu: USB Stack
+adafruit_thumbsticktrinkey_m0.menu.usbstack.arduino=Arduino
+adafruit_thumbsticktrinkey_m0.menu.usbstack.tinyusb=TinyUSB
+adafruit_thumbsticktrinkey_m0.menu.usbstack.tinyusb.build.flags.usbstack=-DUSE_TINYUSB
+
+# Menu: Debug
+adafruit_thumbsticktrinkey_m0.menu.debug.off=Off
+adafruit_thumbsticktrinkey_m0.menu.debug.on=On
+adafruit_thumbsticktrinkey_m0.menu.debug.on.build.flags.debug=-g
+
+
 # -----------------------------------
 # Adafruit ItsyBitsy M0 Express (SAMD21)
 # -----------------------------------
@@ -1550,90 +1736,6 @@ adafruit_feather_m4_can.menu.debug.on=On
 adafruit_feather_m4_can.menu.debug.on.build.flags.debug=-g
 
 
-# -----------------------------------
-# Adafruit Feather M4 Adalogger (SAMD51)
-# -----------------------------------
-#adafruit_feather_m4_log.name=Adafruit Feather M4 Adalogger (SAMD51)
-
-# VID/PID for Bootloader, Arduino & CircuitPython
-#adafruit_feather_m4_log.vid.0=0x239A
-#adafruit_feather_m4_log.pid.0=0x8115
-#adafruit_feather_m4_log.vid.1=0x239A
-#adafruit_feather_m4_log.pid.1=0x0115
-#adafruit_feather_m4_log.vid.2=0x239A
-#adafruit_feather_m4_log.pid.2=0x8116
-
-# Upload
-#adafruit_feather_m4_log.upload.tool=bossac18
-#adafruit_feather_m4_log.upload.protocol=sam-ba
-#adafruit_feather_m4_log.upload.maximum_size=1032192
-#adafruit_feather_m4_log.upload.offset=0x4000
-#adafruit_feather_m4_log.upload.use_1200bps_touch=true
-#adafruit_feather_m4_log.upload.wait_for_upload_port=true
-#adafruit_feather_m4_log.upload.native_usb=true
-
-# Build
-#adafruit_feather_m4_log.build.mcu=cortex-m4
-#adafruit_feather_m4_log.build.f_cpu=120000000L
-#adafruit_feather_m4_log.build.usb_product="Feather M4 Adalogger"
-#adafruit_feather_m4_log.build.usb_manufacturer="Adafruit"
-#adafruit_feather_m4_log.build.board=FEATHER_M4_ADALOGGER
-#adafruit_feather_m4_log.build.core=arduino
-#adafruit_feather_m4_log.build.extra_flags=-D__SAMD51J20A__ -DADAFRUIT_FEATHER_M4_ADALOGGER -D__SAMD51__ -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 {build.usb_flags}
-#adafruit_feather_m4_log.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
-#adafruit_feather_m4_log.build.openocdscript=scripts/openocd/daplink_samd51.cfg
-#adafruit_feather_m4_log.build.variant=feather_m4
-#adafruit_feather_m4_log.build.variant_system_lib=
-#adafruit_feather_m4_log.build.vid=0x239A
-#adafruit_feather_m4_log.build.pid=0x8115
-#adafruit_feather_m4_log.bootloader.tool=openocd
-#adafruit_feather_m4_log.bootloader.file=featherM4/bootloader-feather_m4-v2.0.0-adafruit.5.bin
-#adafruit_feather_m4_log.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
-
-# Menu: Cache
-#adafruit_feather_m4_log.menu.cache.on=Enabled
-#adafruit_feather_m4_log.menu.cache.on.build.cache_flags=-DENABLE_CACHE
-#adafruit_feather_m4_log.menu.cache.off=Disabled
-#adafruit_feather_m4_log.menu.cache.off.build.cache_flags=
-
-# Menu: Speed
-#adafruit_feather_m4_log.menu.speed.120=120 MHz (standard)
-#adafruit_feather_m4_log.menu.speed.120.build.f_cpu=120000000L
-#adafruit_feather_m4_log.menu.speed.150=150 MHz (overclock)
-#adafruit_feather_m4_log.menu.speed.150.build.f_cpu=150000000L
-#adafruit_feather_m4_log.menu.speed.180=180 MHz (overclock)
-#adafruit_feather_m4_log.menu.speed.180.build.f_cpu=180000000L
-#adafruit_feather_m4_log.menu.speed.200=200 MHz (overclock)
-#adafruit_feather_m4_log.menu.speed.200.build.f_cpu=200000000L
-
-# Menu: Optimization
-#adafruit_feather_m4_log.menu.opt.small=Small (-Os) (standard)
-#adafruit_feather_m4_log.menu.opt.small.build.flags.optimize=-Os
-#adafruit_feather_m4_log.menu.opt.fast=Fast (-O2)
-#adafruit_feather_m4_log.menu.opt.fast.build.flags.optimize=-O2
-#adafruit_feather_m4_log.menu.opt.faster=Faster (-O3)
-#adafruit_feather_m4_log.menu.opt.faster.build.flags.optimize=-O3
-#adafruit_feather_m4_log.menu.opt.fastest=Fastest (-Ofast)
-#adafruit_feather_m4_log.menu.opt.fastest.build.flags.optimize=-Ofast
-#adafruit_feather_m4_log.menu.opt.dragons=Here be dragons (-Ofast -funroll-loops)
-#adafruit_feather_m4_log.menu.opt.dragons.build.flags.optimize=-Ofast -funroll-loops
-
-# Menu: QSPI Speed
-#adafruit_feather_m4_log.menu.maxqspi.50=50 MHz (standard)
-#adafruit_feather_m4_log.menu.maxqspi.50.build.flags.maxqspi=-DVARIANT_QSPI_BAUD_DEFAULT=50000000
-#adafruit_feather_m4_log.menu.maxqspi.fcpu=CPU Speed / 2
-#adafruit_feather_m4_log.menu.maxqspi.fcpu.build.flags.maxqspi=-DVARIANT_QSPI_BAUD_DEFAULT=({build.f_cpu})
-
-# Menu: USB Stack
-#adafruit_feather_m4_log.menu.usbstack.arduino=Arduino
-#adafruit_feather_m4_log.menu.usbstack.tinyusb=TinyUSB
-#adafruit_feather_m4_log.menu.usbstack.tinyusb.build.flags.usbstack=-DUSE_TINYUSB
-
-# Menu: Debug
-#adafruit_feather_m4_log.menu.debug.off=Off
-#adafruit_feather_m4_log.menu.debug.on=On
-#adafruit_feather_m4_log.menu.debug.on.build.flags.debug=-g
-
 # -----------------------------------
 # Adafruit Trellis M4 (SAMD51)
 # -----------------------------------

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 ;

libraries/Adafruit_TinyUSB_Arduino

@@ -1 +1 @@
-Subproject commit 633fa06aaf6b3713baaede491c586a578567062c
+Subproject commit c953968c468218d8968138b5ed8482fa565373df

platform.txt

@@ -20,7 +20,7 @@
 # https://arduino.github.io/arduino-cli/0.33/platform-specification/
 
 name=Adafruit SAMD (32-bits ARM Cortex-M0+ and Cortex-M4) Boards
-version=1.7.13
+version=1.7.16
 
 # Compile variables
 # -----------------
@@ -195,7 +195,7 @@ 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}/{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
@@ -221,7 +221,7 @@ 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}/{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)

scripts/openocd/daplink_samd21.cfg

@@ -24,4 +24,6 @@ transport select swd
 # chip name
 set CHIPNAME samd21
 
+set _FLASHDRIVER at91samd
+
 source [find target/at91samdXX.cfg]

scripts/openocd/daplink_samd51.cfg

@@ -24,4 +24,6 @@ transport select swd
 # chip name
 set CHIPNAME samd51
 
+set _FLASHDRIVER atsame5
+
 source [find target/atsame5x.cfg]

scripts/openocd/jlink_samd21.cfg

@@ -24,4 +24,6 @@ transport select swd
 # chip name
 set CHIPNAME samd21
 
+set _FLASHDRIVER at91samd
+
 source [find target/at91samdXX.cfg]

scripts/openocd/jlink_samd51.cfg

@@ -24,4 +24,6 @@ transport select swd
 # chip name
 set CHIPNAME samd51
 
+set _FLASHDRIVER atsame5
+
 source [find target/atsame5x.cfg]

tools/makeboards.py

@@ -275,6 +275,21 @@ d21_board_list = [
      "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",

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/gemma_m0/variant.h

@@ -89,6 +89,7 @@ extern "C"
 #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)
 
 /*

variants/itsybitsy_m0/variant.h

@@ -83,6 +83,7 @@ extern "C"
 // DotStar LED
 #define PIN_DOTSTAR_DATA     (41u)
 #define PIN_DOTSTAR_CLK      (40u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
 #define DOTSTAR_NUM          (1u)
 
 /*

variants/itsybitsy_m4/variant.h

@@ -87,6 +87,7 @@ extern "C"
 // DotStar LED
 #define PIN_DOTSTAR_DATA     (8u)
 #define PIN_DOTSTAR_CLK      (6u)
+#define PIN_DOTSTAR_CLOCK    PIN_DOTSTAR_CLK
 #define DOTSTAR_NUM          (1u)
 
 /*

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/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/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

@@ -89,6 +89,7 @@ extern "C"
 #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)
 
 /*

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_ */
+