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#ifndef NMEA_H
#define NMEA_H
#define LAYERID_TRANSPORT 0
#define LAYERID_APPL 20
/* NMEA only allows space for 12 sats */
#define SAT_MAX_COUNT 12
/* the highest value of sat svid */
#define MAX_SAT_SVID 32
#define GSV_FIELDS 19
#define GSA_FIELDS 17
#define GGA_FIELDS 14
#define RMC_FIELDS 12
typedef enum {
POSITION_NONE = 0,
POSITION_LATITUDE = 1 << 0,
POSITION_LONGITUDE = 1 << 1,
POSITION_ALTITUDE = 1 << 2
} PositionFields;
typedef enum {
COURSE_NONE = 0,
COURSE_SPEED = 1 << 0,
COURSE_DIRECTION = 1 << 1,
COURSE_CLIMB = 1 << 2
} CourseFields;
typedef enum {
FIX_INVALID = 0,
FIX_NONE,
FIX_2D,
FIX_3D
} FixType;
typedef enum {
ACCURACY_NONE = 0,
ACCURACY_POSITION = 1 << 0, /* 3D */
ACCURACY_HORIZONTAL = 1 << 1, /* 2D */
ACCURACY_VERTICAL = 1 << 2, /* Altitude */
} AccuracyFields;
#endif
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