pimoroni-pico/.github/workflows/micropython.yml

name: MicroPython

on:
  push:
  pull_request:
  release:
    types: [created]

env:
  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
  MICROPYTHON_VERSION: v1.18
  BUILD_TYPE: Release

jobs:
  deps:
    runs-on: ubuntu-20.04
    name: Dependencies
    steps:
    # Check out MicroPython
    - name: Checkout MicroPython
      uses: actions/checkout@v2
      with:
        repository: micropython/micropython
        ref: ${{env.MICROPYTHON_VERSION}}
        submodules: false  # MicroPython submodules are hideously broken
        path: micropython

    - uses: actions/checkout@v2
      with:
        submodules: true
        path: pimoroni-pico-${{ github.sha }}

    # Copy Python module files
    - name: Copy modules
      run: |
        cp -r pimoroni-pico-${GITHUB_SHA}/micropython/modules_py/* micropython/ports/rp2/modules/

    - name: Fetch base MicroPython submodules
      shell: bash
      working-directory: micropython
      run: git submodule update --init

    - name: Fetch Pico SDK submodules
      shell: bash
      working-directory: micropython/lib/pico-sdk
      run: git submodule update --init

    - name: Build mpy-cross
      shell: bash
      working-directory: micropython/mpy-cross
      run: make

    - name: Cache
      uses: actions/cache@v2
      with:
        path: ${{runner.workspace}}
        key: workspace-micropython-${{github.ref}}-${{github.sha}}
        restore-keys: |
          workspace-${{github.ref}}
          workspace-micropython-

  build:
    needs: deps
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        board: [PICO, PIMORONI_TINY2040, PIMORONI_PICOLIPO_16MB]

    steps:
    - name: Cache
      uses: actions/cache@v2
      with:
        path: /home/runner/.ccache
        key: ccache-micropython-${{github.ref}}-${{github.sha}}
        restore-keys: |
          ccache-micropython-${{github.ref}}
          ccache-micropython-
  
    - name: Cache
      uses: actions/cache@v2
      with:
        path: ${{runner.workspace}}
        key: workspace-micropython-${{github.ref}}-${{github.sha}}
        restore-keys: |
          workspace-${{github.ref}}
          workspace-micropython-

    - name: Install Compiler & CCache
      if: runner.os == 'Linux'
      run: |
        sudo apt update && sudo apt install ccache gcc-arm-none-eabi
  
    - name: Build MicroPython
      shell: bash
      working-directory: micropython/ports/rp2
      run: |
        make USER_C_MODULES=../../../pimoroni-pico-${GITHUB_SHA}/micropython/modules/micropython.cmake BOARD=${{matrix.board}} -j2

    - name: Rename .uf2 for artifact
      shell: bash
      working-directory: micropython/ports/rp2/build-${{matrix.board}}
      run: cp firmware.uf2 ${{github.event.repository.name}}-${{github.event.release.tag_name}}-${{matrix.board}}-micropython-${{env.MICROPYTHON_VERSION}}.uf2

    - name: Store .uf2 as artifact
      uses: actions/upload-artifact@v2
      with:
        name: ${{github.event.repository.name}}-${{github.event.release.tag_name}}-${{matrix.board}}-micropython-${{env.MICROPYTHON_VERSION}}.uf2
        path: micropython/ports/rp2/build-${{matrix.board}}/${{github.event.repository.name}}-${{github.event.release.tag_name}}-${{matrix.board}}-micropython-${{env.MICROPYTHON_VERSION}}.uf2

    - name: Upload .uf2
      if: github.event_name == 'release'
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      with:
        asset_path: micropython/ports/rp2/build-${{matrix.board}}/firmware.uf2
        upload_url: ${{github.event.release.upload_url}}
        asset_name: ${{github.event.repository.name}}-${{github.event.release.tag_name}}-${{matrix.board}}-micropython-${{env.MICROPYTHON_VERSION}}.uf2
        asset_content_type: application/octet-stream