nmea.h File Reference

NMEA Parser. More...

#include "cfg/cfg_nmea.h"
#include <net/nmeap/inc/nmeap.h>
#include <kern/kfile.h>
#include <time.h>

Go to the source code of this file.

Data Structures
struct	NmeaGga
	Global Positioning System Fix Data. More...
struct	NmeaRmc
	Recommended minimum specific GPS/Transit data. More...
struct	NmeaVtg
	Extracted data from an vtg message. More...
struct	SvInfo
	Extracted data from an gsv message. More...
Typedefs
typedef struct NmeaGga	NmeaGga
	Global Positioning System Fix Data.
typedef struct NmeaRmc	NmeaRmc
	Recommended minimum specific GPS/Transit data.
typedef struct NmeaVtg	NmeaVtg
	Extracted data from an vtg message.
Functions
void	nmea_poll (nmeap_context_t *context, KFile *channel)
	Parse NMEA sentence from a channel.
int	nmea_gpgsv (nmeap_context_t *context, nmeap_sentence_t *sentence)
	standard GPGDSV sentence parser
int	nmea_gpvtg (nmeap_context_t *context, nmeap_sentence_t *sentence)
	standard GPVTG sentence parser
int	nmea_gprmc (nmeap_context_t *context, nmeap_sentence_t *sentence)
	standard GPRMCntence parser
int	nmea_gpgga (nmeap_context_t *context, nmeap_sentence_t *sentence)
	standard GPGGA sentence parser
void	gpgga_callout (nmeap_context_t *context, void *data, void *user_data)
	Callout example for GGA data.
void	gprmc_callout (nmeap_context_t *context, void *data, void *user_data)
	Callout example for RMC.
void	gpgsv_callout (nmeap_context_t *context, void *data, void *user_data)
	Callout example for GSV data.
void	gpvtg_callout (nmeap_context_t *context, void *data, void *user_data)
	Callout example for VTG data.

---

Detailed Description

NMEA Parser.

Author:

Daniele Basile <asterix@develer.com>

Definition in file nmea.h.

---

Typedef Documentation

typedef struct NmeaGga NmeaGga

Global Positioning System Fix Data.

Extracted data from a GGA message

Note: time member contains the seconds elapsed from 00:00:00 1/1/1970, because from nmea sentence we read only the time of UTC position, we have not any reference of date (day, month and year) so time is referred to the start of unix time.

typedef struct NmeaRmc NmeaRmc

Recommended minimum specific GPS/Transit data.

Extracted data from an RMC message

Note: RMC sentences contain also date stamp so, time contains real seconds elapsed from 0:00:00 1/1/1970.