build.yml

name: Build MicroPython

on:
  push:
    branches: '*'
  pull_request:
    branches: '*'

jobs:
  build:
    runs-on: ubuntu-20.04
    name: Build MicroPython
    steps:
      - uses: actions/checkout@v4
      # Yotta has some issues with Python 3.7+
      - name: Install Python 3.6
        uses: actions/setup-python@v5
        with:
          python-version: 3.6
      - name: Install GNU Arm Embedded Toolchain (arm-none-eabi-gcc)
        uses: carlosperate/arm-none-eabi-gcc-action@v1
        with:
          release: "10.3-2021.10"
      - name: Install CMake, Ninja & Yotta
        run: pip install cmake==3.22.3 ninja==1.10.2.3 yotta==0.20.5
      - name: Install srecord
        run: sudo apt-get install -y srecord
      - name: Check Versions
        run: |
          arm-none-eabi-gcc --version
          cmake --version
          ninja --version
          python --version
          yotta --version
      - name: Set up the Yotta target from GitHub
        run: |
          yotta target bbc-microbit-classic-gcc-nosd@https://github.com/lancaster-university/yotta-target-bbc-microbit-classic-gcc-nosd
          yotta up
      - run: make qstrs
      - run: git diff
      - run: make all
      - name: Process date for artifact filename
        id: date
        run: echo "BUILD_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
      - name: Upload hex file
        uses: actions/upload-artifact@v4
        with:
          name: microbitv1-micropython-${{ env.BUILD_DATE }}-${{ github.sha }}.hex
          path: build/firmware.hex