minmea.c File Reference

#include "minmea.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <time.h>

Include dependency graph for minmea.c:

Macros
#define	boolstr(s)   ((s) ? "true" : "false")
#define	next_field()

Functions
static int	hex2int (char c)
uint8_t	minmea_checksum (const char *sentence)
	Calculate raw sentence checksum. More...
bool	minmea_check (const char *sentence, bool strict)
	Check sentence validity and checksum. More...
static bool	minmea_isfield (char c)
bool	minmea_scan (const char *sentence, const char *format,...)
	Scanf-like processor for NMEA sentences. More...
bool	minmea_talker_id (char talker[3], const char *sentence)
	Determine talker identifier. More...
enum minmea_sentence_id	minmea_sentence_id (const char *sentence, bool strict)
	Determine sentence identifier. More...
bool	minmea_parse_rmc (struct minmea_sentence_rmc *frame, const char *sentence)
bool	minmea_parse_gga (struct minmea_sentence_gga *frame, const char *sentence)
bool	minmea_parse_gsa (struct minmea_sentence_gsa *frame, const char *sentence)
bool	minmea_parse_gll (struct minmea_sentence_gll *frame, const char *sentence)
bool	minmea_parse_gst (struct minmea_sentence_gst *frame, const char *sentence)
bool	minmea_parse_gsv (struct minmea_sentence_gsv *frame, const char *sentence)
bool	minmea_parse_vtg (struct minmea_sentence_vtg *frame, const char *sentence)
bool	minmea_parse_zda (struct minmea_sentence_zda *frame, const char *sentence)
int	minmea_gettime (struct timespec *ts, const struct minmea_date *date, const struct minmea_time *time_)
	Convert GPS UTC date/time representation to a UNIX timestamp. More...

Macro Definition Documentation

boolstr

#define boolstr

(

s

)

((s) ? "true" : "false")

next_field

#define next_field

(

)

Value:

do { \
        /* Progress to the next field. */ \
        while (minmea_isfield(*sentence)) \
            sentence++; \
        /* Make sure there is a field there. */ \
        if (*sentence == ',') { \
            sentence++; \
            field = sentence; \
        } else { \
            field = NULL; \
        } \
    } while (0)

Function Documentation

hex2int()

static int hex2int ( char  c )

static

minmea_check()

bool minmea_check	(	const char *	sentence,
		bool	strict
	)

Check sentence validity and checksum.

Returns true for valid sentences.

minmea_checksum()

uint8_t minmea_checksum

(

const char *

sentence

)

Calculate raw sentence checksum.

Does not check sentence integrity.

minmea_gettime()

int minmea_gettime	(	struct timespec *	ts,
		const struct minmea_date *	date,
		const struct minmea_time *	time_
	)

Convert GPS UTC date/time representation to a UNIX timestamp.

minmea_isfield()

static bool minmea_isfield ( char  c )

inlinestatic

minmea_parse_gga()

bool minmea_parse_gga	(	struct minmea_sentence_gga *	frame,
		const char *	sentence
	)

minmea_parse_gll()

bool minmea_parse_gll	(	struct minmea_sentence_gll *	frame,
		const char *	sentence
	)

minmea_parse_gsa()

bool minmea_parse_gsa	(	struct minmea_sentence_gsa *	frame,
		const char *	sentence
	)

minmea_parse_gst()

bool minmea_parse_gst	(	struct minmea_sentence_gst *	frame,
		const char *	sentence
	)

minmea_parse_gsv()

bool minmea_parse_gsv	(	struct minmea_sentence_gsv *	frame,
		const char *	sentence
	)

minmea_parse_rmc()

bool minmea_parse_rmc	(	struct minmea_sentence_rmc *	frame,
		const char *	sentence
	)

minmea_parse_vtg()

bool minmea_parse_vtg	(	struct minmea_sentence_vtg *	frame,
		const char *	sentence
	)

minmea_parse_zda()

bool minmea_parse_zda	(	struct minmea_sentence_zda *	frame,
		const char *	sentence
	)

minmea_scan()

bool minmea_scan	(	const char *	sentence,
		const char *	format,
			...
	)

Scanf-like processor for NMEA sentences.

Supports the following formats: c - single character (char *) d - direction, returned as 1/-1, default 0 (int *) f - fractional, returned as value + scale (int *, int *) i - decimal, default zero (int *) s - string (char *) t - talker identifier and type (char *) T - date/time stamp (int *, int *, int *) Returns true on success. See library source code for details.

minmea_sentence_id()

enum minmea_sentence_id minmea_sentence_id	(	const char *	sentence,
		bool	strict
	)

Determine sentence identifier.

minmea_talker_id()

bool minmea_talker_id	(	char	talker[3],
		const char *	sentence
	)

Determine talker identifier.