nmea.h

/*
 * nmea.h
 *
 *  Created on: Feb 16, 2019
 *      Author: TritionCubed
 */

#define _EMPTY 0x00
#define NMEA_GPRMC 0x01
#define NMEA_GPRMC_STR "$GNRMC"
#define NMEA_GPGGA 0x02
#define NMEA_GPGGA_STR "$GNGGA"
#define NMEA_UNKNOWN 0x00
#define _COMPLETED 0x03

#define NMEA_CHECKSUM_ERR 0x80
#define NMEA_MESSAGE_ERR 0xC0

#include <stdint.h>

//holds gpgga data
struct gpgga {
  // Latitude eg: 4124.8963 (XXYY.ZZKK.. DEG, MIN, SEC.SS)
  double latitude;
  // Latitude eg: N
  char lat;
  // Longitude eg: 08151.6838 (XXXYY.ZZKK.. DEG, MIN, SEC.SS)
  double longitude;
  // Longitude eg: W
  char lon;
  // Quality 0, 1, 2
  uint8_t quality;
  // Number of satellites: 1,2,3,4,5...
  uint8_t satellites;
  // Altitude eg: 280.2 (Meters above mean sea level)
  double altitude;
};

typedef struct gpgga gpgga_t;

//holds gprmc data
struct gprmc {
  int hour;
  int minute;
  int second;
  double latitude;
  char lat;
  double longitude;
  char lon;
  double speed;
  double course;
};

typedef struct gprmc gprmc_t;

uint8_t nmea_get_message_type( const char * );

uint8_t nmea_valid_checksum( const char * );

void nmea_parse_gpgga( char *, gpgga_t * );

void nmea_parse_gprmc( char *, gprmc_t * );