Fix clang-format CI: add .clang-format, update workflow, format code

.clang-format

@@ -0,0 +1,13 @@
+Language: Cpp
+BasedOnStyle: Google
+IndentWidth: 2
+ColumnLimit: 80
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+BinPackArguments: true
+BinPackParameters: true
+BreakBeforeBraces: Attach
+DerivePointerAlignment: false
+PointerAlignment: Left
+SpacesBeforeTrailingComments: 1

.github/workflows/githubci.yml

@@ -3,8 +3,28 @@ name: Arduino Library CI
 on: [pull_request, push, repository_dispatch]
 
 jobs:
+  clang-format:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - uses: actions/checkout@v3
+    - uses: actions/checkout@v3
+      with:
+         repository: adafruit/ci-arduino
+         path: ci
+
+    - name: pre-install
+      run: bash ci/actions_install.sh
+
+    - name: clang
+      run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r . 
+
   build:
     runs-on: ubuntu-latest
+    needs: clang-format
     
     steps:
     - uses: actions/setup-python@v4

DHT.cpp

@@ -129,7 +129,9 @@ float DHT::readTemperature(bool S, bool force) {
  *					value in Celcius
  *	@return float value in Fahrenheit
  */
-float DHT::convertCtoF(float c) { return c * 1.8 + 32; }
+float DHT::convertCtoF(float c) {
+  return c * 1.8 + 32;
+}
 
 /*!
  *  @brief  Converts Fahrenheit to Celcius
@@ -137,7 +139,9 @@ float DHT::convertCtoF(float c) { return c * 1.8 + 32; }
  *					value in Fahrenheit
  *	@return float value in Celcius
  */
-float DHT::convertFtoC(float f) { return (f - 32) * 0.55555; }
+float DHT::convertFtoC(float f) {
+  return (f - 32) * 0.55555;
+}
 
 /*!
  *  @brief  Read Humidity

DHT.h

@@ -30,14 +30,20 @@
 /* Setup debug printing macros. */
 #ifdef DHT_DEBUG
 #define DEBUG_PRINT(...)              \
-  { DEBUG_PRINTER.print(__VA_ARGS__); }
+  {                                   \
+    DEBUG_PRINTER.print(__VA_ARGS__); \
+  }
 #define DEBUG_PRINTLN(...)              \
-  { DEBUG_PRINTER.println(__VA_ARGS__); }
+  {                                     \
+    DEBUG_PRINTER.println(__VA_ARGS__); \
+  }
 #else
 #define DEBUG_PRINT(...) \
-  {} /**< Debug Print Placeholder if Debug is disabled */
+  {                      \
+  } /**< Debug Print Placeholder if Debug is disabled */
 #define DEBUG_PRINTLN(...) \
-  {} /**< Debug Print Line Placeholder if Debug is disabled */
+  {                        \
+  } /**< Debug Print Line Placeholder if Debug is disabled */
 #endif
 
 /* Define types of sensors. */

DHT_U.cpp

@@ -29,13 +29,17 @@
  */
 DHT_Unified::DHT_Unified(uint8_t pin, uint8_t type, uint8_t count,
                          int32_t tempSensorId, int32_t humiditySensorId)
-    : _dht(pin, type, count), _type(type), _temp(this, tempSensorId),
+    : _dht(pin, type, count),
+      _type(type),
+      _temp(this, tempSensorId),
       _humidity(this, humiditySensorId) {}
 
 /*!
  *  @brief  Setup sensor (calls begin on It)
  */
-void DHT_Unified::begin() { _dht.begin(); }
+void DHT_Unified::begin() {
+  _dht.begin();
+}
 
 /*!
  *  @brief  Sets sensor name
@@ -57,9 +61,9 @@ void DHT_Unified::setName(sensor_t *sensor) {
       strncpy(sensor->name, "DHT22", sizeof(sensor->name) - 1);
       break;
     default:
-    // TODO: Perhaps this should be an error?  However main DHT library doesn't
+      // TODO: Perhaps this should be an error?  However main DHT library
-    // enforce restrictions on the sensor type value.  Pick a generic name for
+      // doesn't enforce restrictions on the sensor type value.  Pick a generic
-    // now.
+      // name for now.
       strncpy(sensor->name, "DHT?", sizeof(sensor->name) - 1);
       break;
   }

DHT_U.h

@@ -80,13 +80,17 @@ public:
    *  @brief  Returns temperature stored in _temp
    *  @return Temperature value
    */
-  Temperature temperature() { return _temp; }
+  Temperature temperature() {
+    return _temp;
+  }
 
   /*!
    *  @brief  Returns humidity stored in _humidity
    *  @return Humidity value
    */
-  Humidity humidity() { return _humidity; }
+  Humidity humidity() {
+    return _humidity;
+  }
 
  private:
   DHT _dht;