Picoware CI build workflow pipeline.

.github/workflows/picoware_ci.yml

@@ -0,0 +1,32 @@
+name: Picoware CI
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./picoware
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install Arduino CLI
+        uses: arduino/setup-arduino-cli@v1
+
+      - name: Arduino CLI Core Index Update
+        run: |
+          arduino-cli config init
+          arduino-cli core update-index
+
+      - name: Arduino RP2040 Platform Installation
+        run: arduino-cli core install rp2040:rp2040 --additional-urls https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
+
+      - name: Picoware for RP2040
+        run: |
+          arduino-cli compile --fqbn rp2040:rp2040:rpipico:opt=Optimize3 picoware.ino