File containing the NMEA parser functions. More...

#include <__cross_studio_io.h>
#include <msp430x16x.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <limits.h>
#include <stdlib.h>
#include "parser_nmea.h"

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Functions
int	hex2int (char c)
	Transform hexa to integer. More...

enum nmea_sentence_id	nmea_sentence_id (char *sentence)
	Determine sentence identifier. More...

int	nmea_isfield (char c)
	Check if the char is part of the field. More...

int	nmea_scan (const char sentence, const char format,...)
	Scanf-like processor for NMEA sentences. More...

int	nmea_parse_rmc (struct nmea_sentence_rmc frame, const char sentence)
	Parse a RMC sentence. More...

int	nmea_parse_gga (struct nmea_sentence_gga frame, const char sentence)
	Parse a GGA sentence. More...

int	nmea_check (const char *sentence, int strict)
	Check sentence validity and checksum. More...

Detailed Description

File containing the NMEA parser functions.

Author: Gaël Foppolo (gaelfoppolo)

Function Documentation

int hex2int ( char c )

Transform hexa to integer.

Parameters

[in] c An integer (char)

Returns: An integer (hex)

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int nmea_check	(	const char *	sentence,
		int	strict
	)

Check sentence validity and checksum.

Calculate checksum and compare it

Parameters

sentence	The sentence to test
strict	Accept or not sentence with checksum

Returns: 1 for valid sentences.

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int nmea_isfield ( char c )

Check if the char is part of the field.

Aka char isn't a comma or star

Parameters

c	The char to test

Returns: 1 is valid, 0 if not

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int nmea_parse_gga	(	nmea_sentence_gga *	frame,
		const char *	sentence
	)

Parse a GGA sentence.

Parameters

frame	The struct where to put the parsed data
sentence	The sentence to parse

Returns: 1 on success

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int nmea_parse_rmc	(	nmea_sentence_rmc *	frame,
		const char *	sentence
	)

Parse a RMC sentence.

Parameters

frame	The struct where to put the parsed data
sentence	The sentence to parse

Returns: 1 on success

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int nmea_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 - float (float *) o - longitude value, transform all in degrees (float *) a - latitude value, transform all in degrees (float *) i - decimal (integer), default zero (int *) s - string (char *) t - talker identifier and type (char *)

Parameters

sentence	The sentence to parse
format	The format of the sentence

See also: nmea_parse_*** functions for further explanations

Returns: 1 on success, 1 if not

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enum nmea_sentence_id nmea_sentence_id ( char * sentence )

Determine sentence identifier.

Parameters

sentence Then sentence to test

Returns: The type of sentence

Functions

Detailed Description

Function Documentation