58 lines
1.0 KiB
C
58 lines
1.0 KiB
C
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/**
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*
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* https://github.com/wdalmut/libgps/tree/develop/src
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*
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*/
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#ifndef _NMEA_H_
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#define _NMEA_H_
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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#define GPS_MAX_STRING 256
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typedef enum {
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NMEA_UNKNOWN = 0x00,
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NMEA_GPRMC = 0x01,
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NMEA_GPGGA = 0x02
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} nmea_message_type;
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#define _EMPTY 0x00
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#define NMEA_GPRMC_STR "$GPRMC"
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#define NMEA_GPGGA_STR "$GPGGA"
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#define _COMPLETED 0x03
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#define NMEA_CHECKSUM_ERR 0x80
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#define NMEA_MESSAGE_ERR 0xC0
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struct GPSlocation {
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float latitude;
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float longitude;
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float speed;
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float altitude;
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float course;
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struct tm GPStm;
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nmea_message_type type;
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int quality;
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int satellites;
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char lat; // Northing Indicator N=North, S=South
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char lon; // Easting Indicator E=East, W=West
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};
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typedef struct GPSlocation loc_t;
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nmea_message_type nmea_get_message_type(const char *);
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int nmea_valid_checksum(const char *);
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void nmea_parse_gpgga(char *, loc_t *);
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void nmea_parse_gprmc(char *, loc_t *);
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void gps_location(loc_t *, char *);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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