Add I2C support to STM32 platform

.github/workflows/build-libraries.yaml

@@ -113,9 +113,11 @@ jobs:
     - name: "Rename and write sha256sum"
       working-directory: build
       run: |
-        ATOMVMLIB_FILE=atomvmlib-${{ github.ref_name }}.avm
-        mv libs/atomvmlib.avm "libs/${ATOMVMLIB_FILE}" &&
-        sha256sum "libs/${ATOMVMLIB_FILE}" > "libs/${ATOMVMLIB_FILE}.sha256"
+        for variant in atomvmlib atomvmlib-esp32 atomvmlib-rp2 atomvmlib-stm32 atomvmlib-emscripten; do
+          VARIANT_FILE="${variant}-${{ github.ref_name }}.avm"
+          mv "libs/${variant}.avm" "libs/${VARIANT_FILE}" &&
+          sha256sum "libs/${VARIANT_FILE}" > "libs/${VARIANT_FILE}.sha256"
+        done
         HELLO_WORLD_FILE=hello_world-${{ github.ref_name }}.avm
         mv examples/erlang/hello_world.avm "examples/erlang/${HELLO_WORLD_FILE}"
         sha256sum "examples/erlang/${HELLO_WORLD_FILE}" > "examples/erlang/${HELLO_WORLD_FILE}.sha256"
@@ -129,5 +131,13 @@ jobs:
         files: |
           build/libs/atomvmlib-${{ github.ref_name }}.avm
           build/libs/atomvmlib-${{ github.ref_name }}.avm.sha256
+          build/libs/atomvmlib-esp32-${{ github.ref_name }}.avm
+          build/libs/atomvmlib-esp32-${{ github.ref_name }}.avm.sha256
+          build/libs/atomvmlib-rp2-${{ github.ref_name }}.avm
+          build/libs/atomvmlib-rp2-${{ github.ref_name }}.avm.sha256
+          build/libs/atomvmlib-stm32-${{ github.ref_name }}.avm
+          build/libs/atomvmlib-stm32-${{ github.ref_name }}.avm.sha256
+          build/libs/atomvmlib-emscripten-${{ github.ref_name }}.avm
+          build/libs/atomvmlib-emscripten-${{ github.ref_name }}.avm.sha256
           build/examples/erlang/hello_world-${{ github.ref_name }}.avm
           build/examples/erlang/hello_world-${{ github.ref_name }}.avm.sha256

.github/workflows/pico-build.yaml

@@ -138,15 +138,15 @@ jobs:
         npm install
         npx tsx run-tests.ts ../build.nosmp/tests/rp2_tests.uf2 ../build.nosmp/tests/test_erl_sources/rp2_test_modules.uf2
 
-    - name: Build atomvmlib.uf2
+    - name: Build atomvmlib-rp2.uf2
       if: startsWith(github.ref, 'refs/tags/') && matrix.board != 'pico_w' && matrix.platform == '' && matrix.jit == ''
       shell: bash
       run: |
         set -euo pipefail
         mkdir build
         cd build
         cmake ..
-        make atomvmlib-${{ matrix.board }}.uf2
+        make atomvmlib-rp2-${{ matrix.board }}.uf2
 
     - name: Rename AtomVM and write sha256sum
       if: startsWith(github.ref, 'refs/tags/') && matrix.platform == '' && matrix.jit == ''
@@ -157,19 +157,14 @@ jobs:
         mv src/AtomVM.uf2 "src/${ATOMVM_UF2}"
         sha256sum "src/${ATOMVM_UF2}" > "src/${ATOMVM_UF2}.sha256"
         popd
-        pushd build/libs
-        ATOMVMLIB_FILE=atomvmlib-${{ matrix.board }}-${{ github.ref_name }}.uf2
-        mv atomvmlib.uf2 "${ATOMVMLIB_FILE}"
-        sha256sum "${ATOMVMLIB_FILE}" > "${ATOMVMLIB_FILE}.sha256"
-        popd
 
-    - name: Rename atomvmlib and write sha256sum
+    - name: Rename atomvmlib-rp2 and write sha256sum
       if: startsWith(github.ref, 'refs/tags/') && matrix.board != 'pico_w' && matrix.platform == '' && matrix.jit == ''
       shell: bash
       run: |
         pushd build/libs
-        ATOMVMLIB_FILE=atomvmlib-${{ matrix.board }}-${{ github.ref_name }}.uf2
-        mv atomvmlib-${{ matrix.board }}.uf2 "${ATOMVMLIB_FILE}"
+        ATOMVMLIB_FILE=atomvmlib-rp2-${{ matrix.board }}-${{ github.ref_name }}.uf2
+        mv atomvmlib-rp2-${{ matrix.board }}.uf2 "${ATOMVMLIB_FILE}"
         sha256sum "${ATOMVMLIB_FILE}" > "${ATOMVMLIB_FILE}.sha256"
         popd
 
@@ -182,8 +177,8 @@ jobs:
         files: |
           src/platforms/rp2/build/src/AtomVM-${{ matrix.board }}-${{ github.ref_name }}.uf2
           src/platforms/rp2/build/src/AtomVM-${{ matrix.board }}-${{ github.ref_name }}.uf2.sha256
-          build/libs/atomvmlib-${{ matrix.board }}-${{ github.ref_name }}.uf2
-          build/libs/atomvmlib-${{ matrix.board }}-${{ github.ref_name }}.uf2.sha256
+          build/libs/atomvmlib-rp2-${{ matrix.board }}-${{ github.ref_name }}.uf2
+          build/libs/atomvmlib-rp2-${{ matrix.board }}-${{ github.ref_name }}.uf2.sha256
 
     - name: Release (PicoW)
       uses: softprops/action-gh-release@v1

.github/workflows/run-tests-with-beam.yaml

@@ -177,7 +177,7 @@ jobs:
       working-directory: build
       run: |
         export PATH="${{ matrix.path_prefix }}$PATH"
-        erl -pa tests/libs/estdlib/ -pa tests/libs/estdlib/beams/ -pa libs/etest/src/beams -pa libs/eavmlib/src/beams -s tests -s init stop -noshell
+        erl -pa tests/libs/estdlib/ -pa tests/libs/estdlib/beams/ -pa libs/etest/src/beams -pa libs/eavmlib/src/beams -pa libs/avm_network/src/beams -s tests -s init stop -noshell
 
     # Test
     - name: "Run tests/libs/etest/test_eunit with OTP eunit"

.github/workflows/stm32-build.yaml

@@ -14,13 +14,15 @@ on:
       - 'CMakeModules/**'
       - 'src/platforms/stm32/**'
       - 'src/libAtomVM/**'
+      - 'libs/**'
   pull_request:
     paths:
       - '.github/workflows/stm32-build.yaml'
       - 'CMakeLists.txt'
       - 'CMakeModules/**'
       - 'src/platforms/stm32/**'
       - 'src/libAtomVM/**'
+      - 'libs/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref != 'refs/heads/main' && github.ref || github.run_id }}
@@ -34,17 +36,84 @@ jobs:
       contents: read
       security-events: write
 
-    steps:
-    - uses: actions/cache@v4
-      id: builddeps-cache
-      with:
-        path: |
-              /home/runner/libopencm3
-        key: ${{ runner.os }}-build-deps
+    strategy:
+      fail-fast: false
+      matrix:
+        device:
+          - stm32f407vgt6
+          - stm32f411ceu6
+          - stm32f429zit6
+          - stm32h743vit6
+          - stm32h743zit6
+          - stm32u585ait6q
+          - stm32wb55rg
+          - stm32h562rgt6
+          - stm32f746zgt6
+          - stm32g474ret6
+          - stm32l476rgt6
+          - stm32l562qei6
+          - stm32f207zgt6
+          - stm32u375rgt6
+          - stm32g0b1ret6
+        include:
+          - device: stm32f407vgt6
+            max_size: 524288
+            renode_platform: stm32f4.repl
+            avm_address: "0x08080000"
+            # Renode's STM32F4_I2C model has a bug: it never calls
+            # FinishTransmission() on the I2C slave when a STOP condition
+            # occurs, causing the BME280 sensor to get stuck in Reading
+            # state and ignore subsequent writes.
+            skip_i2c_test: true
+          - device: stm32f411ceu6
+            max_size: 393216
+            renode_platform: stm32f4.repl
+            avm_address: "0x08060000"
+            skip_i2c_test: true
+          - device: stm32f429zit6
+            max_size: 524288
+          - device: stm32h743vit6
+            max_size: 524288
+            renode_platform: stm32h743.repl
+            avm_address: "0x08080000"
+          - device: stm32h743zit6
+            max_size: 524288
+          - device: stm32u585ait6q
+            max_size: 524288
+          - device: stm32wb55rg
+            max_size: 524288
+          - device: stm32h562rgt6
+            max_size: 524288
+          - device: stm32f746zgt6
+            max_size: 524288
+            renode_platform: stm32f746.repl
+            avm_address: "0x08080000"
+          - device: stm32g474ret6
+            max_size: 393216
+          - device: stm32l476rgt6
+            max_size: 524288
+          - device: stm32l562qei6
+            max_size: 393216
+            renode_platform: stm32l562.repl
+            avm_address: "0x08060000"
+            # Renode's built-in stm32l552.repl uses STM32F4_I2C (legacy I2C
+            # register layout) but the L5 HAL uses the newer I2C registers
+            # (TIMINGR, ISR, etc.), causing a complete register mismatch.
+            skip_i2c_test: true
+          - device: stm32f207zgt6
+            max_size: 524288
+          - device: stm32u375rgt6
+            max_size: 524288
+          - device: stm32g0b1ret6
+            max_size: 393216
+            renode_platform: stm32g0b1.repl
+            avm_address: "0x08060000"
 
+    steps:
     - uses: erlef/setup-beam@v1
       with:
-        otp-version: "27"
+        otp-version: "28"
+        rebar3-version: "3.25.1"
         hexpm-mirrors: |
           https://builds.hex.pm
           https://repo.hex.pm
@@ -54,42 +123,106 @@ jobs:
       run: sudo apt update
 
     - name: "Install deps"
-      run: sudo apt install -y cmake gperf gcc-arm-none-eabi
+      run: sudo apt install -y cmake ninja-build gperf python3-pip && pip3 install meson
 
-    - name: Checkout and build libopencm3
-      if: ${{ steps.builddeps-cache.outputs.cache-hit != 'true' }}
-      working-directory: /home/runner
+    - name: "Install ARM GNU Toolchain"
       run: |
-        set -euo pipefail
-        cd /home/runner
-        test -d libopencm3 && rm -fr libopencm3
-        git clone https://github.com/libopencm3/libopencm3.git -b v0.8.0
-        cd libopencm3
-        make
+        wget -q https://developer.arm.com/-/media/Files/downloads/gnu/15.2.rel1/binrel/arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-eabi.tar.xz
+        tar xJf arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-eabi.tar.xz -C /opt
+        echo "/opt/arm-gnu-toolchain-15.2.rel1-x86_64-arm-none-eabi/bin" >> $GITHUB_PATH
 
     - name: Checkout repo
       uses: actions/checkout@v4
 
-    - name: "Git config safe.directory for codeql"
-      run: git config --global --add safe.directory /__w/AtomVM/AtomVM
-
-    - name: "Initialize CodeQL"
-      uses: github/codeql-action/init@v4
-      with:
-        languages: 'cpp'
-        build-mode: manual
-        queries: +./code-queries/term-to-non-term-func.ql,./code-queries/non-term-to-term-func.ql,./code-queries/mismatched-atom-string-length.ql,./code-queries/mismatched-free-type.ql,./code-queries/term-use-after-gc.ql
-
-    - name: Build
+    - name: "Build for ${{ matrix.device }}"
       shell: bash
       working-directory: ./src/platforms/stm32/
       run: |
         set -euo pipefail
         mkdir build
         cd build
-        # -DAVM_WARNINGS_ARE_ERRORS=ON
-        cmake .. -DCMAKE_TOOLCHAIN_FILE=cmake/arm-toolchain.cmake -DLIBOPENCM3_DIR=/home/runner/libopencm3
-        make -j
+        cmake .. -G Ninja -DCMAKE_TOOLCHAIN_FILE=cmake/arm-toolchain.cmake -DDEVICE=${{ matrix.device }}
+        cmake --build .
+
+    - name: "Check firmware size for ${{ matrix.device }}"
+      shell: bash
+      working-directory: ./src/platforms/stm32/build
+      run: |
+        set -euo pipefail
+        ELF="AtomVM-${{ matrix.device }}.elf"
+        SIZES=$(arm-none-eabi-size "$ELF" | tail -1)
+        TEXT=$(echo "$SIZES" | awk '{print $1}')
+        DATA=$(echo "$SIZES" | awk '{print $2}')
+        FLASH_USED=$((TEXT + DATA))
+        MAX=${{ matrix.max_size }}
+        echo "Firmware flash usage: ${FLASH_USED} bytes ($(( FLASH_USED / 1024 )) KB)"
+        echo "Flash limit: ${MAX} bytes ($(( MAX / 1024 )) KB)"
+        if [ "$FLASH_USED" -gt "$MAX" ]; then
+          echo "::error::Firmware too large: ${FLASH_USED} bytes exceeds ${MAX} byte limit for ${{ matrix.device }}"
+          exit 1
+        fi
+        echo "OK: ${FLASH_USED} / ${MAX} bytes ($(( FLASH_USED * 100 / MAX ))% used)"
 
-    - name: "Perform CodeQL Analysis"
-      uses: github/codeql-action/analyze@v4
+    - name: Build host AtomVM and test AVMs
+      if: matrix.renode_platform
+      run: |
+        set -euo pipefail
+        mkdir build-host
+        cd build-host
+        cmake .. -G Ninja
+        cmake --build . -t stm32_boot_test stm32_gpio_test stm32_i2c_test
+
+    - name: Install Renode
+      if: matrix.renode_platform
+      run: |
+        set -euo pipefail
+        mkdir -p renode-portable
+        wget -qO- https://builds.renode.io/renode-latest.linux-portable.tar.gz \
+          | tar -xzf - -C renode-portable --strip-components=1
+        echo "$PWD/renode-portable" >> $GITHUB_PATH
+        pip install -r renode-portable/tests/requirements.txt
+
+    - name: Run Renode boot test
+      if: matrix.renode_platform
+      run: |
+        LOCAL_REPL="src/platforms/stm32/tests/renode/${{ matrix.renode_platform }}"
+        if [ -f "$LOCAL_REPL" ]; then
+          PLATFORM="@$PWD/$LOCAL_REPL"
+        else
+          PLATFORM="@platforms/cpus/${{ matrix.renode_platform }}"
+        fi
+        renode-test src/platforms/stm32/tests/renode/stm32_boot_test.robot \
+          --variable ELF:@$PWD/src/platforms/stm32/build/AtomVM-${{ matrix.device }}.elf \
+          --variable AVM:@$PWD/build-host/src/platforms/stm32/tests/test_erl_sources/stm32_boot_test.avm \
+          --variable AVM_ADDRESS:${{ matrix.avm_address }} \
+          --variable PLATFORM:$PLATFORM
+
+    - name: Run Renode GPIO test
+      if: matrix.renode_platform
+      run: |
+        LOCAL_REPL="src/platforms/stm32/tests/renode/${{ matrix.renode_platform }}"
+        if [ -f "$LOCAL_REPL" ]; then
+          PLATFORM="@$PWD/$LOCAL_REPL"
+        else
+          PLATFORM="@platforms/cpus/${{ matrix.renode_platform }}"
+        fi
+        renode-test src/platforms/stm32/tests/renode/stm32_gpio_test.robot \
+          --variable ELF:@$PWD/src/platforms/stm32/build/AtomVM-${{ matrix.device }}.elf \
+          --variable AVM:@$PWD/build-host/src/platforms/stm32/tests/test_erl_sources/stm32_gpio_test.avm \
+          --variable AVM_ADDRESS:${{ matrix.avm_address }} \
+          --variable PLATFORM:$PLATFORM
+
+    - name: Run Renode I2C test
+      if: matrix.renode_platform && !matrix.skip_i2c_test
+      run: |
+        LOCAL_REPL="src/platforms/stm32/tests/renode/${{ matrix.renode_platform }}"
+        if [ -f "$LOCAL_REPL" ]; then
+          PLATFORM="@$PWD/$LOCAL_REPL"
+        else
+          PLATFORM="@platforms/cpus/${{ matrix.renode_platform }}"
+        fi
+        renode-test src/platforms/stm32/tests/renode/stm32_i2c_test.robot \
+          --variable ELF:@$PWD/src/platforms/stm32/build/AtomVM-${{ matrix.device }}.elf \
+          --variable AVM:@$PWD/build-host/src/platforms/stm32/tests/test_erl_sources/stm32_i2c_test.avm \
+          --variable AVM_ADDRESS:${{ matrix.avm_address }} \
+          --variable PLATFORM:$PLATFORM

.github/workflows/wasm-build.yaml

@@ -71,7 +71,7 @@ jobs:
         cd build
         cmake .. -G Ninja -DAVM_WARNINGS_ARE_ERRORS=ON
         # test_eavmlib does not work with wasm due to http + ssl test
-        ninja AtomVM atomvmlib erlang_test_modules test_etest test_alisp test_estdlib hello_world run_script call_cast html5_events wasm_webserver
+        ninja AtomVM atomvmlib atomvmlib-emscripten erlang_test_modules test_etest test_alisp test_estdlib hello_world run_script call_cast html5_events wasm_webserver
 
     - name: "Perform CodeQL Analysis"
       uses: github/codeql-action/analyze@v4

CHANGELOG.md

@@ -70,6 +70,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added initial support for ESP32C5 and ESP32C61
 - Added `Range:size/1`
 - Added missing `ledc` functions for esp32 platform
+- Added support for 10 new STM32 families by switching to STM32 official SDK
 
 ### Changed
 

CMakeLists.txt

@@ -86,6 +86,7 @@ add_subdirectory(tools/uf2tool)
 if (NOT "${CMAKE_GENERATOR}" MATCHES "Xcode")
     add_custom_target(dialyzer COMMENT "Run dialyzer")
     add_subdirectory(libs)
+    add_subdirectory(src/platforms/stm32/tests/test_erl_sources)
     if(NOT AVM_BUILD_RUNTIME_ONLY)
         add_subdirectory(examples)
         add_subdirectory(doc)