LibrePilot/flight/OpenPilot/Modules/GPS/inc/NMEA.h

#ifndef NMEA_H
#define NMEA_H

#include <stdbool.h>
#include <stdint.h>

extern bool NMEA_update_position (char * nmea_sentence);
extern bool NMEA_checksum (char * nmea_sentence);

#endif /* NMEA_H */
gps: Update GPSPosition instead of PositionActual GPS module now updates GPSPosition UAVObject rather than the PositionActual object. The GPSPosition object is intended to be consumed only by the AHRS. The AHRS will use this (and other inputs) to compute a filtered version of the position in the PositionActual object. This commit will cause temporary breakage of the GPS functionality in the GCS until the PositionActual object is properly updated by the AHRS. Most of the GCS should continue to use PositionActual. The only exception to this might be any tool for specifically visualizing the raw GPS state. GPS.c is now only responsible for receiving a complete NMEA sentence from the COM interface. NMEA parsing is now factored out into NMEA.[ch] which is where GPSPosition is now updated based on the complete NMEA sentences obtained from the GPS. Latitude and Longitude are now encoded in a fixed-point notation in units of degrees x 10^-7 to prevent truncation of precision due to encoding into a float. git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1431 ebee16cc-31ac-478f-84a7-5cbb03baadba 2010-08-27 04:15:00 +02:00			`#ifndef NMEA_H`
			`#define NMEA_H`

			`#include <stdbool.h>`
			`#include <stdint.h>`

			`extern bool NMEA_update_position (char * nmea_sentence);`
			`extern bool NMEA_checksum (char * nmea_sentence);`

			`#endif /* NMEA_H */`