Add clang-format CI job; reformat sources

.clang-format

@@ -0,0 +1,14 @@
+Language: Cpp
+BasedOnStyle: Google
+IndentWidth: 2
+ColumnLimit: 80
+AllowShortBlocksOnASingleLine: Always
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+BinPackArguments: true
+BinPackParameters: true
+BreakBeforeBraces: Attach
+DerivePointerAlignment: false
+PointerAlignment: Left
+SpacesBeforeTrailingComments: 1

.github/workflows/githubci.yml

@@ -3,7 +3,19 @@ name: Arduino Library CI
 on: [pull_request, push, repository_dispatch]
 
 jobs:
+  clang-format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+        with:
+          repository: adafruit/ci-arduino
+          path: ci
+      - name: Check code formatting with clang-format
+        run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r .
+
   build:
+    needs: clang-format
     runs-on: ubuntu-latest
 
     steps:
@@ -22,11 +34,8 @@ jobs:
     - name: test platforms
       run: python3 ci/build_platform.py main_platforms
 
-    - name: clang
-      run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r . 
-
     - name: doxygen
       env:
         GH_REPO_TOKEN: ${{ secrets.GH_REPO_TOKEN }}
         PRETTYNAME : "Adafruit FONA Arduino Library"
-      run: bash ci/doxy_gen_and_deploy.sh
+      run: bash ci/doxy_gen_and_deploy.sh