Summary: Setup guardrails for RPi tutorial scripts by adding them to CI

.github/workflows/trunk.yml

@@ -1066,3 +1066,48 @@ jobs:
 
           .ci/scripts/test_model.ps1 -modelName ${{ matrix.model }} -backend ${{ matrix.backend }}
         }"
+
+  test-rpi-scripts:
+    name: test-rpi-scripts
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@release/2.9
+    strategy:
+      matrix:
+        include:
+          - build-tool: cmake
+      fail-fast: false
+    permissions:
+      id-token: write
+      contents: read
+    with:
+      runner: linux.2xlarge
+      docker-image: ci-image:executorch-ubuntu-22.04-arm-sdk
+      submodules: 'recursive'
+      ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
+      timeout: 90
+      script: |
+        # The generic Linux job chooses to use base env, not the one setup by the image
+        CONDA_ENV=$(conda env list --json | jq -r ".envs | .[-1]")
+        conda activate "${CONDA_ENV}"
+
+        source .ci/scripts/utils.sh
+
+        # Validate the Raspberry Pi setup scripts
+        ## Pi5
+        examples/raspberry_pi/setup.sh pi5
+        examples/raspberry_pi/setup.sh pi5 --clean
+        ## Pi4
+        examples/raspberry_pi/setup.sh pi4
+        examples/raspberry_pi/setup.sh pi4 --clean
+
+        # Validate the script for Pico2 setup
+        ## Generate model
+        cd ./examples/raspberry_pi/pico2
+        ## Creates balanced_tiny_mlp_mnist.pte
+        python export_mlp_mnist.py
+        cd -
+
+        .ci/scripts/setup-arm-baremetal-tools.sh
+        source examples/arm/ethos-u-scratch/setup_path.sh
+        examples/raspberry_pi/pico2/build_firmware_pico.sh --model=balanced_tiny_mlp_mnist.pte
+        examples/raspberry_pi/pico2/build_firmware_pico.sh --clean
+        rm ./examples/raspberry_pi/pico2/balanced_tiny_mlp_mnist.pte

examples/raspberry_pi/setup.sh

@@ -269,7 +269,7 @@ setup_environment() {
     # Install ExecuTorch
     log_info "Installing ExecuTorch dependencies..."
     if [[ -f "./install_executorch.sh" ]]; then
-        ./install_executorch.sh
+        ./install_executorch.sh --use-pt-pinned-commit
     else
         log_error "./install_executorch.sh not found"
         log_info "Make sure you're in the ExecuTorch root directory"
@@ -450,9 +450,14 @@ build_executorch_core() {
     fi
 
     log_info "Building ExecuTorch core libraries..."
+    # log info
+    log_info "WORKSPACE_DIR: $WORKSPACE_DIR"
+    log_info "CMAKE_OUT_DIR: $CMAKE_OUT_DIR"
+    log_info "PWD: $(pwd)"
 
     # Configure
     cmake --preset llm \
+        -B "$CMAKE_OUT_DIR" \
         -DCMAKE_TOOLCHAIN_FILE="$CMAKE_TOOLCHAIN_FILE" \
         -DCMAKE_BUILD_TYPE=Release \
         -DCMAKE_INSTALL_PREFIX="$CMAKE_OUT_DIR" \