add gitea workflow

.gitea/workflows/release.yaml

@@ -0,0 +1,66 @@
+name: Build and Release Firmware
+
+on:
+  push:
+    tags:
+      - "v*"
+
+env:
+  TARGET: thumbv8m.main-none-eabihf
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    container:
+      image: catthehacker/ubuntu:act-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust Toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Install cargo-binutils
+        run: cargo install cargo-binutils
+      - name: Build Firmware Binaries
+        run: |
+          cd firmware
+
+          # Array of "variant_name:features"
+          VARIANTS=(
+            "cs4398:cs4398,hid"
+            "ak4490:ak4490,hid"
+            "evk:evk,hid"
+          )
+
+          mkdir -p ../dist
+
+          for entry in "${VARIANTS[@]}"; do
+            IFS=":" read -r name features <<< "$entry"
+            echo "Building variant: $name with features: $features"
+
+            # 1. Compile release binary
+            cargo build --release --target ${{ env.TARGET }} --no-default-features --features "$features"
+
+            # 2. Paths setup
+            ELF_PATH="../target/${{ env.TARGET }}/release/guac"
+            HEX_PATH="../target/${{ env.TARGET }}/release/guac-${name}.hex"
+            RENAMED_ELF="../target/${{ env.TARGET }}/release/guac-${name}.elf"
+
+            # 3. Create .hex file via rust-objcopy
+            cargo objcopy --release --target ${{ env.TARGET }} --no-default-features --features "$features" -- -O ihex "$HEX_PATH"
+            cp "$ELF_PATH" "$RENAMED_ELF"
+
+            # 4. Package ELF and HEX into target-specific ZIP
+            ZIP_NAME="guac-firmware-${name}.zip"
+            zip -j "../dist/${ZIP_NAME}" "$RENAMED_ELF" "$HEX_PATH"
+          done
+
+      - name: Create Gitea Release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: dist/*.zip
+          draft: false
+          prerelease: false

rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "1.95.0"
+targets = ["thumbv8m.main-none-eabihf"]
+components = ["llvm-tools-preview"]