Add method for setting temperature correction

Author: Christian Stehno

src/SparkFunBME280.cpp

@@ -47,7 +47,7 @@ BME280::BME280( void )
 	settings.tempOverSample = 1;
 	settings.pressOverSample = 1;
 	settings.humidOverSample = 1;
-    settings.tempCorrection = 0.0; // correction of temperature - added to the result
+	settings.tempCorrection = 0.f; // correction of temperature - added to the result
 }
 
 
@@ -453,6 +453,11 @@ float BME280::readFloatHumidity( void )
 //
 //****************************************************************************//
 
+void BME280::setTemperatureCorrection(float corr)
+{
+	settings.tempCorrection = corr;
+}
+
 float BME280::readTempC( void )
 {
 	// Returns temperature in DegC, resolution is 0.01 DegC. Output value of “5123” equals 51.23 DegC.

src/SparkFunBME280.h

@@ -223,7 +223,8 @@ class BME280
 
 	float readFloatHumidity( void );
 
-	//Temperature related methods
+    //Temperature related methods
+    void setTemperatureCorrection(float corr);
     float readTempC( void );
     float readTempF( void );
 
@@ -258,4 +259,4 @@ class BME280
 	float _referencePressure = 101325.0; //Default but is changeable
 };
 
-#endif  // End of __BME280_H__ definition check
+#endif  // End of __BME280_H__ definition check