Merge pull request #4 from caternuson/build_release_ci

Add firmware build and release workflow

Author: BlitzCityDIY

.github/workflows/build_uf2.yml

@@ -0,0 +1,43 @@
+name: Build UF2
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install gcc-arm
+        uses: carlosperate/arm-none-eabi-gcc-action@v1
+        with:
+          release: '10-2020-q4'
+      - name: Get pico-sdk submodule
+        run: git submodule update --init --recursive
+#-- HACK-----------------------------------------------------------
+# needed for older pico-sdk, see here for more info:
+# https://github.com/raspberrypi/pico-sdk/pull/457
+      - name: Patch pico-sdk for crystal startup
+        run: sed -i 's/xosc_hw->startup = startup_delay;/xosc_hw->startup = startup_delay * 64;/' firmware/pico-sdk/src/rp2_common/hardware_xosc/xosc.c
+#-- HACK-----------------------------------------------------------
+      - name: Build firmwares
+        run: |
+          arm-none-eabi-gcc --version
+          cd firmware/source
+          mkdir build
+          cd build
+          cmake -DBOARD=PICO .. ; make ; mv u2if.uf2 u2if_pico.uf2
+          cmake -DBOARD=FEATHER .. ; make ; mv u2if.uf2 u2if_feather.uf2
+          cmake -DBOARD=QTPY .. ; make ; mv u2if.uf2 u2if_qtpy.uf2
+          cmake -DBOARD=ITSYBITSY .. ; make ; mv u2if.uf2 u2if_itsybitsy.uf2
+          cmake -DBOARD=QT2040_TRINKEY .. ; make ; mv u2if.uf2 u2if_trinkey.uf2
+          ls -l u2if_*.uf2
+      - name: Add Build Artifacts to CI Run
+        uses: actions/upload-artifact@v3
+        with:
+          name: firmware_uf2s
+          path: firmware/source/build/u2if_*.uf2
+      - name: Add Release Assets
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: u2if_*.uf2