More efficient CI builds (#3303)

* More efficient CI builds

* Update main.yml

.github/workflows/main.yml

@@ -8,43 +8,34 @@ on:
   pull_request:
 
 jobs:
-
+  
+  # Ubuntu
   build-arduino-linux:
     name: Arduino ${{ matrix.chunk }} on ubuntu-latest
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        chunk: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]
+        chunk: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14]
     
     steps:
     - uses: actions/checkout@v1
     - name: Build Sketches
-      run: bash ./tools/ci/on-push.sh ${{ matrix.chunk }} 12
+      run: bash ./tools/ci/on-push.sh ${{ matrix.chunk }} 15
 
-  build-arduino-mac:
-    name: Arduino ${{ matrix.chunk }} on macOS-latest
-    runs-on: macOS-latest
+  # Windows and MacOS
+  build-arduino-win-mac:
+    name: Arduino on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        chunk: [3, 6]
+        os: [windows-latest, macOS-latest]
     
     steps:
     - uses: actions/checkout@v1
     - name: Build Sketches
-      run: bash ./tools/ci/on-push.sh ${{ matrix.chunk }} 12
-
-  build-arduino-win:
-    name: Arduino ${{ matrix.chunk }} on windows-latest
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        chunk: [5, 15, 25]
-    
-    steps:
-    - uses: actions/checkout@v1
-    - name: Build Sketches
-      run: bash ./tools/ci/on-push.sh ${{ matrix.chunk }} 30
+      run: bash ./tools/ci/on-push.sh
 
+  # PlatformIO on Windows, Ubuntu and Mac
   build-platformio:
     name: PlatformIO on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
@@ -55,4 +46,4 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: Build Sketches
-      run: bash ./tools/ci/on-push.sh 1 1
+      run: bash ./tools/ci/on-push.sh 1 1 #equal and non-zero to trigger PIO