use martix for ci

Author: hathach

.github/workflows/githubci.yml

@@ -5,7 +5,21 @@ on: [pull_request, push, repository_dispatch]
 jobs:
   build:
     runs-on: ubuntu-latest
-    
+    strategy:
+      fail-fast: false
+      matrix:
+        arduino-platform:
+          - 'uno'
+          - 'leonardo'
+          - 'atmega2560'
+          - 'esp8266'
+          - 'esp32'
+          - 'trinket_m0'
+          - 'cpb'
+          - 'cpx'
+          - 'metro_m0'
+          - 'metro_m4_tinyusb'
+
     steps:
     - uses: actions/setup-python@v1
       with:
@@ -26,10 +40,30 @@ jobs:
         git clone --quiet https://github.com/adafruit/Adafruit_SPIFlash.git /home/runner/Arduino/libraries/Adafruit_SPIFlash
 
     - name: test platforms
-      run: python3 ci/build_platform.py main_platforms metro_m4_tinyusb cpb cpx
+      run: python3 ci/build_platform.py ${{ matrix.arduino-platform }}
+
+  clang_and_doxy:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Setup Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Checkout adafruit/ci-arduino
+      uses: actions/checkout@v2
+      with:
+         repository: adafruit/ci-arduino
+         path: ci
+
+    - name: pre-install
+      run: bash ci/actions_install.sh
 
     - name: clang
-      run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r . 
+      run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r .
 
     - name: doxygen
       env: