add esp32 for build examples workflow

.github/workflows/compile_examples.yml

@@ -44,4 +44,33 @@ jobs:
           libraries: |
             - source-path: ./
           sketch-paths:
-            ./examples/ESP8266_example/ESP8266_example.ino
+            ./examples/ESP8266_example/ESP8266_example.ino
+
+  build-esp32:
+    runs-on: ubuntu-latest
+    if: contains(github.event.head_commit.message, 'esp32')
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        idf_ver: ["release-v5.0", "release-v5.1", "release-v5.2", "release-v5.3", "latest"]
+        idf_target: ["esp32", "esp32s2", "esp32s3", "esp32c2", "esp32c3"]
+
+    container: espressif/idf:${{ matrix.idf_ver }}
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: 'true'
+      - name: esp-idf build
+        env:
+          IDF_TARGET: ${{ matrix.idf_target }}
+        shell: bash
+        working-directory: examples/ESP8266_example
+        run: |
+          . ${IDF_PATH}/export.sh
+          export PEDANTIC_FLAGS="-DIDF_CI_BUILD -Werror -Werror=deprecated-declarations -Werror=unused-variable -Werror=unused-but-set-variable -Werror=unused-function"
+          export EXTRA_CFLAGS="${PEDANTIC_FLAGS} -Wstrict-prototypes"
+          export EXTRA_CXXFLAGS="${PEDANTIC_FLAGS}"
+          idf.py build