Unify SERCOM clock frequency handling across UART/SPI/WIRE

.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

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+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

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+---
+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

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+name: Build
+
+on: [pull_request, push]
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        board:
+          # Alphabetical order
+          - 'circuitplayground_m0'
+          - 'feather_m4_can'
+          - 'hallowing'
+          - 'hallowing_m4'
+          - 'metro_m0'
+          - 'metro_m4'
+          - 'pybadge_m4'
+          - 'pygamer_m4'
+          - 'pyportal_m4'
+          - 'pyportal_m4_titano'
+          # with TinyUSB
+          - 'metro_m0:usbstack=tinyusb'
+          - 'metro_m4:speed=120,usbstack=tinyusb'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        submodules: 'true'
+
+    - name: Install Arduino CLI and Tools
+      run: |
+        # make all our directories we need for files and libraries
+        mkdir $HOME/.arduino15
+        mkdir $HOME/.arduino15/packages
+        mkdir $HOME/Arduino
+        mkdir $HOME/Arduino/libraries
+        curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
+        echo "$GITHUB_WORKSPACE/bin" >> $GITHUB_PATH
+
+    - name: Install BSP and Libraries
+      env:
+        BSP_URL: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
+        BSP_PATH: .arduino15/packages/adafruit/hardware/samd
+      run: |
+        arduino-cli config init
+        arduino-cli core update-index
+        arduino-cli core update-index --additional-urls $BSP_URL        
+        arduino-cli core install arduino:samd --additional-urls $BSP_URL
+        arduino-cli core install adafruit:samd --additional-urls $BSP_URL
+        # Replace release BSP with our code
+        BSP_VERSION=`eval ls $HOME/$BSP_PATH`
+        rm -r $HOME/$BSP_PATH/*
+        ln -s $GITHUB_WORKSPACE $HOME/$BSP_PATH/$BSP_VERSION
+        arduino-cli lib install "Adafruit NeoPixel" "Adafruit seesaw Library" "Adafruit SPIFlash" "FlashStorage" "MIDI Library" "SD" "SdFat - Adafruit Fork"
+
+    - name: Build examples
+      run: python3 tools/build_all.py ${{ matrix.board }}

.gitignore

@@ -1,3 +1,6 @@
 *.bz2
+*.atsuo
 
 bootloaders/*/build/
+*~
+/libraries/**/build/

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "libraries/Adafruit_TinyUSB_Arduino"]
+	path = libraries/Adafruit_TinyUSB_Arduino
+	url = https://github.com/adafruit/Adafruit_TinyUSB_Arduino.git
+[submodule "libraries/Adafruit_ZeroDMA"]
+	path = libraries/Adafruit_ZeroDMA
+	url = https://github.com/adafruit/Adafruit_ZeroDMA

README.md

@@ -1,53 +1,28 @@
-# Arduino Core for SAMD21 CPU
+# Arduino Core for SAMD21 and SAMD51 CPU
 
-This repository contains the source code and configuration files of the Arduino Core
-for Atmel's SAMD21 processor (used on the Arduino/Genuino Zero, MKR1000 and MKRZero boards).
-
-## Installation on Arduino IDE
+[![Build Status](https://github.com/adafruit/ArduinoCore-samd/workflows/Build/badge.svg)](https://github.com/adafruit/ArduinoCore-samd/actions)
 
-This core is available as a package in the Arduino IDE cores manager.
-Just open the "Boards Manager" and install the package called:
+This repository contains the source code and configuration files of the Arduino Core
+for Atmel's SAMD21 and SAMD51 processor (used on the Arduino/Genuino Zero, MKR1000 and MKRZero boards).
 
-"Arduino SAMD Boards (32-bit ARM Cortex-M0+)"
+In particular, this adds support for the Adafruit SAMD Boards such as the Feather M0
 
-## Support
+## Bugs or Issues
 
-There is a dedicated section of the Arduino Forum for general discussion and project assistance:
+* AREF must be tied to 3.3V for dac to work. This is a bug in the SAMD51 silicon.
+* USB host mode doesn't work yet
 
-http://forum.arduino.cc/index.php?board=98.0
+If you find a bug you can submit an issue here on github:
 
-## Bugs or Issues
+https://github.com/adafruit/ArduinoCore-samd
 
-If you find a bug you can submit an issue here on github:
+or if it is an issue with the upstream:
 
 https://github.com/arduino/ArduinoCore-samd/issues
 
 Before posting a new issue, please check if the same problem has been already reported by someone else
 to avoid duplicates.
 
-## Contributions
-
-Contributions are always welcome. The preferred way to receive code cotribution is by submitting a 
-Pull Request on github.
-
-## Hourly builds
-
-This repository is under a Continuous Integration system that every hour checks if there are updates and
-builds a release for testing (the so called "Hourly builds").
-
-The hourly builds are available through Boards Manager. If you want to install them:
-  1. Open the **Preferences** of the Arduino IDE.
-  2. Add this URL `http://downloads.arduino.cc/Hourly/samd/package_samd-hourly-build_index.json` in the **Additional Boards Manager URLs** field, and click OK.
-  3. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
-  4. Install **Arduino SAMD core - Hourly build**
-  5. Select one of the boards under **SAMD Hourly build XX** in Tools->Board menu
-  6. Compile/Upload as usual
-
-If you already installed an hourly build and you want to update it with the latest:
-  1. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
-  2. Remove **Arduino SAMD core - Hourly build**
-  3. Install again **Arduino SAMD core - Hourly build**, the Board Manager will download the latest build replacing the old one.
-
 ## License and credits
 
 This core has been developed by Arduino LLC in collaboration with Atmel.