gps.h

#ifndef _SYSIO_GPS_H_
#define _SYSIO_GPS_H_
#include <sysio/defs.h>
#ifdef __cplusplus
  extern "C" {
#endif
/* ========================================================================== */
#include <gps.h>
#include <math.h>

/* macros =================================================================== */
#define GPS_ISNAN(x) ((x) != (x))

/* constants ================================================================ */
typedef enum {
  eGpsNoError = 0,
  eGpsArgumentError = -1,
  eGpsReadError = -2,
  eGpsFixError = -3,
  eGpsMemoryError = -4,
  eGpsServerError = -5,
  eGpsThreadError = -6
} eGpsError;

typedef enum {
  eDegDd = 0,       
  eDegDdMmSs =    (1<<0), 
  eDegDdMm =      (1<<1), 
  eDegAprsLat =   (1<<2), 
  eDegAprsLong =  (1<<3), 
  eDegAprs =  eDegAprsLat | eDegAprsLong  
} eGpsAngleFormat;

typedef enum {
  eTimeLocal, 
  eTimeUtc, 
  eTimeAprs 
} eGpsTimeFormat;

typedef enum {
  eModeNotSeen = MODE_NOT_SEEN, 
  eModeNoFix   = MODE_NO_FIX,   
  eMode2d      = MODE_2D,       
  eMode3d      = MODE_3D        
} eGpsMode;

#ifndef STATUS_DGPS_FIX
#define STATUS_DGPS_FIX 2
#endif

typedef enum {
  eStatusNoFix  = STATUS_NO_FIX,  
  eStatusFix    = STATUS_FIX,     
  eStatsDgpsFix = STATUS_DGPS_FIX 
} eGpsStatus;

/* structures =============================================================== */
struct xGps;

/* types ==================================================================== */
typedef void (* vGpsFixCallback) (struct xGps * gps);

typedef void (* vGpsErrorCallback) (int error);

/* internal public functions ================================================ */
struct xGps * xGpsNew (char * server, char * port);

void vGpsDelete (struct xGps * gps);

bool bGpsDataAvailable (struct xGps * gps);

int iGpsError (struct xGps * gps);

const char * cGpsStrError (struct xGps * gps);

bool bGpsIsFix (struct xGps * gps);

eGpsStatus eGpsFixStatus (struct xGps * gps);

eGpsMode eGpsFixMode (struct xGps * gps);

timestamp_t tGpsTime (struct xGps * gps);

char * cGpsTimeToStr (eGpsTimeFormat format, timestamp_t t);

double dGpsTimeError (struct xGps * gps);

double dGpsLatitude (struct xGps * gps);

double dGpsLatitudeError (struct xGps * gps);

double dGpsLongitude (struct xGps * gps);

double dGpsLongitudeError (struct xGps * gps);

char * cGpsAngleToStr (eGpsAngleFormat format, double f, char * str, size_t strsize);

double dGpsAltitude (struct xGps * gps);

double dGpsAltitudeError (struct xGps * gps);

double dGpsTrack (struct xGps * gps);

double dGpsTrackError (struct xGps * gps);

double dGpsSpeed (struct xGps * gps);

double dGpsSpeedError (struct xGps * gps);

double dGpsClimb (struct xGps * gps);

double dGpsClimbError (struct xGps * gps);

int iGpsPrintData (struct xGps * gps, eGpsTimeFormat eTime, eGpsAngleFormat eDeg);

int iGpsRead (struct xGps * gps, struct gps_data_t * data);

int iGpsSetFixCallback (struct xGps * gps, vGpsFixCallback callback);

void vGpsClearFixCallback(struct xGps * gps);

int iGpsSetErrorCallback (struct xGps * gps, vGpsErrorCallback callback);

void vGpsClearErrorCallback(struct xGps * gps);

/* ========================================================================== */
#ifdef __cplusplus
  }
#endif
#endif /* _SYSIO_GPS_H_ defined */