feat(ci): enhance CI workflow to cache and upload compiled binaries for improved build efficiency

Author: JakubAndrysek

.github/workflows/docs_build.yml

@@ -35,6 +35,42 @@ jobs:
           cache: "pip"
           python-version: "3.10"
 
+      - name: Restore compiled binaries from cache
+        id: cache-restore
+        uses: actions/cache/restore@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        with:
+          key: compiled-binaries-consolidated-${{ github.sha }}
+          restore-keys: |
+            compiled-binaries-consolidated-
+            compiled-binaries-Linux-${{ github.sha }}-
+            compiled-binaries-Linux-
+          path: compiled_binaries
+          lookup-only: false
+
+      - name: Download compiled binaries artifact (fallback)
+        if: steps.cache-restore.outputs.cache-hit != 'true'
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1
+        with:
+          name: compiled-binaries-consolidated
+          path: compiled_binaries
+        continue-on-error: true
+
+      - name: Copy cached binaries to local directory
+        run: |
+          if [ -d "compiled_binaries" ]; then
+            echo "Found cached binaries, copying to local workspace..."
+            mkdir -p local_binaries
+            cp -r compiled_binaries/* local_binaries/ || true
+            echo "Available binaries:"
+            find local_binaries -type f -name "*.bin" -o -name "*.elf" | head -20
+            echo "Total binary files found: $(find local_binaries -type f \( -name "*.bin" -o -name "*.elf" \) | wc -l)"
+
+            echo "Contents of compiled_binaries directory:"
+            find compiled_binaries -type f | head -20
+          else
+            echo "No cached binaries found, will build fresh"
+          fi
+
       - name: Build Examples
         run: |
           source .github/scripts/install-arduino-cli.sh

.github/workflows/push.yml

@@ -22,6 +22,7 @@ on:
     branches:
       - master
       - release/*
+      - wokwi-embed-launchpad
   pull_request:
     paths:
       - "cores/**"
@@ -167,6 +168,25 @@ jobs:
       - name: Build selected sketches
         run: bash ./.github/scripts/on-push.sh ${{ matrix.chunk }} ${{ needs.gen-chunks.outputs.chunk_count }} 1 ${{ env.LOG_LEVEL }} affected_sketches.txt
 
+      - name: Collect compiled binaries
+        run: |
+          mkdir -p compiled_binaries
+          # Find and copy all compiled binaries (*.bin, *.elf files)
+          find . -name "*.bin" -o -name "*.elf" | grep -E "(build|target)" | while read file; do
+            # Create relative path structure in compiled_binaries
+            rel_path=$(echo "$file" | sed 's|^\./||')
+            target_dir="compiled_binaries/$(dirname "$rel_path")"
+            mkdir -p "$target_dir"
+            cp "$file" "$target_dir/"
+          done
+
+      - name: Upload compiled binaries as artifact
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: compiled-binaries-${{ matrix.chunk }}
+          path: compiled_binaries
+          retention-days: 1
+
       #Upload cli compile json as artifact
       - name: Upload cli compile json
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
@@ -175,6 +195,40 @@ jobs:
           path: cli_compile_${{ matrix.chunk }}.json
           overwrite: true
 
+  # Consolidate compiled binaries from all chunks
+  consolidate-binaries:
+    name: Consolidate compiled binaries
+    needs: [gen-chunks, build-arduino-linux]
+    if: ${{ needs.gen-chunks.outputs.should_build == '1' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download all binary artifacts
+        uses: actions/download-artifact@95815c38cf2ff2164869cbab79da8d1f422bc89e # v4.2.1
+        with:
+          pattern: compiled-binaries-*
+          merge-multiple: true
+          path: all_binaries
+
+      - name: List consolidated binaries
+        run: |
+          echo "Consolidating binaries from all chunks..."
+          echo "Downloaded artifacts:"
+          find all_binaries -type f -name "*.bin" -o -name "*.elf" | head -20 || echo "No binaries found in artifacts"
+          echo "Total binary files: $(find all_binaries -type f \( -name "*.bin" -o -name "*.elf" \) | wc -l)"
+
+      - name: Create consolidated binary cache
+        uses: actions/cache/save@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        with:
+          key: compiled-binaries-consolidated-${{ github.sha }}
+          path: all_binaries
+
+      - name: Upload consolidated binaries
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: compiled-binaries-consolidated
+          path: all_binaries
+          retention-days: 7
+
   # Windows and MacOS
   build-arduino-win-mac:
     name: Arduino on ${{ matrix.os }}