ESP32.yml

name: ESP32

on:
  workflow_dispatch:
  push:
    paths:
      - 'src/**'
  pull_request:
    branches:
      - master

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  setup-environment:
    runs-on: ubuntu-24.04
    steps:
     # Get the latest MicroPython release
      - name: Get MicroPython latest release
        run: |
          MPY_RELEASE=$(curl --silent "https://api.github.com/repos/micropython/micropython/releases/latest" | jq -r .tag_name)
          echo "MPY_RELEASE=${MPY_RELEASE}" >> $GITHUB_ENV

      # Cache ESP-IDF dependencies and MicroPython
      - name: Cache ESP-IDF and MicroPython
        id: cache_esp_idf
        uses: actions/cache@v4
        with:
          lookup-only: true
          path: |
            ~/esp-idf/
            ~/.espressif/
            !~/.espressif/dist/
            ~/.cache/pip/
            ~/micropython/
          key: mpy-${{ env.MPY_RELEASE }}
          restore-keys: mpy-

      # Install ESP-IDF dependencies (if not cached)
      - name: Install dependencies
        if: steps.cache_esp_idf.outputs.cache-hit != 'true'
        run: |
          sudo apt-get update
          sudo apt-get install -y git wget flex bison gperf python3 python3-pip python3-venv cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0

      # Clone the latest MicroPython release (if not cached)
      - name: Clone MicroPython latest release
        id: clone-micropython
        if: steps.cache_esp_idf.outputs.cache-hit != 'true'
        run: |
          echo "Cloning MicroPython release: $MPY_RELEASE"
          cd ~
          git clone --depth 1 --branch ${{ env.MPY_RELEASE }} https://github.com/micropython/micropython.git
          cd micropython
          git submodule update --init --depth 1
          cd mpy-cross
          make
          cd ~/micropython/ports/esp32
          make submodules
          echo "Micropython setup successfully"
          source ~/micropython/tools/ci.sh && echo "IDF_VER=$IDF_VER" >> $GITHUB_ENV

      # Download and set up ESP-IDF (if not cached)
      - name: Set up ESP-IDF
        id: export-idf
        if: steps.cache_esp_idf.outputs.cache-hit != 'true'
        run: |
          cd ~
          git clone --depth 1 --branch release/v5.2 https://github.com/espressif/esp-idf.git
          # git clone --depth 1 --branch ${{ env.IDF_VER }} https://github.com/espressif/esp-idf.git
          git -C esp-idf submodule update --init --recursive --filter=tree:0
          cd esp-idf
          ./install.sh all
          cd components
          git clone https://github.com/espressif/esp32-camera
          cd ~/esp-idf/
          source ./export.sh

  # Dynamically create jobs for each board
  build:
    needs: setup-environment
    runs-on: ubuntu-24.04
    strategy:
      fail-fast: false
      matrix:
        board: 
          - ESP32_GENERIC-SPIRAM
          - ESP32_GENERIC_S2
          - ESP32_GENERIC_S3
          - ESP32_GENERIC_S3-SPIRAM_OCT
          - ESP32_GENERIC_S3-FLASH_4M

    steps:
     # Get the latest MicroPython release
      - name: Get MicroPython latest release
        run: |
          MPY_RELEASE=$(curl --silent "https://api.github.com/repos/micropython/micropython/releases/latest" | jq -r .tag_name)
          echo "MPY_RELEASE=${MPY_RELEASE}" >> $GITHUB_ENV

      # Cache ESP-IDF dependencies and MicroPython
      - name: Cache ESP-IDF and MicroPython
        uses: actions/cache@v4
        with:
          path: |
            ~/esp-idf/
            ~/.espressif/
            !~/.espressif/dist/
            ~/.cache/pip/
            ~/micropython/
          key: mpy-${{ env.MPY_RELEASE }}
          restore-keys: mpy-

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install ESP-IDF dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y git wget flex bison gperf python3 python3-pip python3-venv cmake ninja-build ccache libffi-dev libssl-dev dfu-util libusb-1.0-0 build-essential pkg-config

      # Build MicroPython for each board
      - name: Build MicroPython
        run: |
          cd ~/micropython/ports/esp32
          source ~/esp-idf/export.sh

          # Check if a variant is defined and adjust the make command
          IFS='-' read -r BOARD_NAME BOARD_VARIANT <<< "${{ matrix.board }}"
          if [ -n "${BOARD_VARIANT}" ]; then
            make USER_C_MODULES=${{ github.workspace }}/src/micropython.cmake BOARD=$BOARD_NAME BOARD_VARIANT=$BOARD_VARIANT all
          else
            make USER_C_MODULES=${{ github.workspace }}/src/micropython.cmake BOARD=$BOARD_NAME all
          fi
          mv ~/micropython/ports/esp32/build-${{ matrix.board }}/firmware.bin ~/${{ matrix.board }}.bin

      - name: Upload firmware artifact
        uses: actions/upload-artifact@v4
        with:
          name: firmware-${{ matrix.board }}
          path: ~/${{ matrix.board }}.bin
          retention-days: 90