code finished for testing, added serial monitor and debug output

code/original_firmware/.github/workflows/build.yaml

@@ -0,0 +1,64 @@
+name: Build Photon
+
+on:
+  workflow_dispatch:
+  release:
+    types: [ published ]
+
+jobs:
+  build:
+    name: Build and Upload
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Check out the PR
+      uses: actions/checkout@v4
+
+    - name: Select Python 3.7
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.7'
+        architecture: 'x64'
+
+    - name: Generate Short SHA Environment Variable
+      run: echo "SHORT_SHA=`echo ${GITHUB_SHA} | cut -c1-8`" >> $GITHUB_ENV
+
+    - name: Install PlatformIO
+      run: |
+        pip install -U platformio
+        pio upgrade --dev
+        pio pkg update --global
+
+    - name: Compile Artifacts for Release
+      if: github.event_name == 'release'
+      run: |
+        export VERSION_STRING=${{ github.event.release.tag_name }}
+        cd photon
+        pio run
+        cp .pio/build/photon-bmp/firmware.bin ../photon-lumenpnp-${{ github.event.release.tag_name }}.bin
+        cp .pio/build/photon-bmp/firmware.elf ../photon-lumenpnp-${{ github.event.release.tag_name }}.elf
+
+
+    - name: Upload Artifacts to Release
+      uses: softprops/action-gh-release@v2
+      if: github.event_name == 'release'
+      with:
+        files: |
+          photon-lumenpnp-${{ github.event.release.tag_name }}.bin
+          photon-lumenpnp-${{ github.event.release.tag_name }}.elf
+
+    - name: Compile Artifacts for Workflow Dispatch
+      if: github.event_name != 'release'
+      run: |
+        export VERSION_STRING=debug-${{ env.SHORT_SHA }}
+        cd photon && pio run
+        cp .pio/build/photon-bmp/firmware.bin ../photon-lumenpnp-${{ env.SHORT_SHA }}.bin
+        cp .pio/build/photon-bmp/firmware.elf ../photon-lumenpnp-${{ env.SHORT_SHA }}.elf
+
+    - name: Upload Artifacts to Workflow Dispatch
+      if: github.event_name != 'release'
+      uses: actions/upload-artifact@v4
+      with:
+        name: photon-lumenpnp-${{ env.SHORT_SHA }}.bin
+        path: photon-lumenpnp-${{ env.SHORT_SHA }}.elf
+
+