Added verbose debug message in getDistanceFromPrevious

GpsTracker/Gps.cpp

@@ -67,7 +67,9 @@ namespace gps {
 
 		if(!hardware::sim808::device.getGpsField(lastPosition, SIM808_GPS_FIELD::LATITUDE, &lat2)) return 0;
 		if(!hardware::sim808::device.getGpsField(lastPosition, SIM808_GPS_FIELD::LONGITUDE, &lng2)) return 0;
-		
+
+		VERBOSE_FORMAT("distanceFromPrevious", "%s, %f, %f, %f, %f", lastPosition, previousLat, previousLng, lat2, lng2);
+
 		lat1 = radians(previousLat);
 		lng1 = radians(previousLng);