usermod bme280

Added public variables to the BME280 usermod based on those in the Temperature usermod.  Only complication is that this usermod utilises different function calls depending on whether user defines celsius or not.  I have handled this for the temperature, but the Dew Point and Heat Index are relative to the temperature.

I've also addressed some areas where I'd previously assumed Celsius for reporting purposes as my test case is using Farenheit.

usermods/BME280_v2/usermod_bme280.h

@@ -113,11 +113,23 @@ bool HomeAssistantDiscovery = false;     // Publish Home Assistant Device Inform
 
     String t = String("homeassistant/sensor/") + mqttClientID + "/temperature/config";
 
-    _createMqttSensor("Temperature", mqttTemperatureTopic, "temperature", "°C");
+    #ifdef Celsius
+      _createMqttSensor("Temperature", mqttTemperatureTopic, "temperature", "°C");
+    #else
+      _createMqttSensor("Temperature", mqttTemperatureTopic, "temperature", "°F");  
+    #endif
     _createMqttSensor("Pressure", mqttPressureTopic, "pressure", "hPa");
     _createMqttSensor("Humidity", mqttHumidityTopic, "humidity", "%");
-    _createMqttSensor("HeatIndex", mqttHeatIndexTopic, "temperature", "°C");
-    _createMqttSensor("DewPoint", mqttDewPointTopic, "temperature", "°C");
+    #ifdef Celsius
+      _createMqttSensor("HeatIndex", mqttHeatIndexTopic, "temperature", "°C");
+    #else
+      _createMqttSensor("HeatIndex", mqttHeatIndexTopic, "temperature", "°F");
+    #endif
+    #ifdef Celsius
+      _createMqttSensor("DewPoint", mqttDewPointTopic, "temperature", "°C");
+    #else
+      _createMqttSensor("DewPoint", mqttDewPointTopic, "temperature", "°F");
+    #endif
   }
 
   // Create an MQTT Sensor for Home Assistant Discovery purposes, this includes a pointer to the topic that is published to in the Loop.
@@ -260,13 +272,43 @@ bool HomeAssistantDiscovery = false;     // Publish Home Assistant Device Inform
       }
     }
   }
+
+    /*
+     * API calls te enable data exchange between WLED modules
+     */
+    inline float getTemperatureC() {
+      #ifdef Celsius
+        return (float)sensorTemperature;
+      #else
+        return (float)sensorTemperature * 1.8f + 32;
+      #endif
+
+    }
+    inline float getTemperatureF() {
+      #ifdef Celsius
+        return ((float)sensorTemperature -32) * 0.56f;
+      #else
+        return (float)sensorTemperature;
+      #endif
+    }
+    inline float getHumidity() {
+      return (float)sensorHumidity;
+    }
+    inline float getPressure() {
+      return (float)sensorPressure;
+    }
+    inline float getDewPoint() {
+      return (float)sensorDewPoint;
+    }
+    inline float getHeatIndex() {
+      return (float)sensorHeatIndex;
+    }
 
   // Publish Sensor Information to Info Page
   void addToJsonInfo(JsonObject &root)
   {
     JsonObject user = root[F("u")];
-    if (user.isNull())
-      user = root.createNestedObject(F("u"));
+    if (user.isNull()) user = root.createNestedObject(F("u"));
 
     if (sensorType==0) //No Sensor
     {
@@ -292,14 +334,27 @@ bool HomeAssistantDiscovery = false;     // Publish Home Assistant Device Inform
       JsonArray heatindex_json = user.createNestedArray("Heat Index");
       JsonArray dewpoint_json = user.createNestedArray("Dew Point");
       temperature_json.add(sensorTemperature);
-      temperature_json.add(F("°C"));
+      #ifdef  Celsius
+        temperature_json.add(F("°C"));
+      #else
+        temperature_json.add(F("°F"));
+      #endif
       humidity_json.add(sensorHumidity);
       humidity_json.add(F("%"));
       pressure_json.add(sensorPressure);
-      pressure_json.add(F("°C"));
+      pressure_json.add(F("hPa"));
       heatindex_json.add(sensorHeatIndex);
-      heatindex_json.add(F("°C"));
+      #ifdef  Celsius
+        heatindex_json.add(F("°C"));
+      #else
+        heatindex_json.add(F("°F"));
+      #endif
       dewpoint_json.add(sensorDewPoint);
+      #ifdef  Celsius
+        dewpoint_json.add(F("°C"));
+      #else
+        dewpoint_json.add(F("°F"));
+      #endif
       dewpoint_json.add(F("°C"));
     }
       return;