interface changes

added new data-strcutures for new sensors
new helper methods
fixed some issues

sensors/gps/GPSData.h

@@ -2,7 +2,7 @@
 #define GPSDATA_H
 
 #include "../../data/Timestamp.h"
-
+#include "../../geo/EarthPos.h"
 
 struct GPSData {
 
@@ -25,6 +25,11 @@ struct GPSData {
 	/** ctor */
 	GPSData(const Timestamp tsReceived, const float lat, const float lon, const float alt, const float accuracy) : tsReceived(tsReceived), lat(lat), lon(lon), alt(alt), accuracy(accuracy), speed(NAN)  {;}
 
+	/** get as EarthPos struct */
+	EarthPos toEarthPos() const {
+		return EarthPos(lat, lon, alt);
+	}
+
 	/** data valid? */
 	bool isValid() const {
 		return (lat == lat) && (lon == lon);