/*
* Copyright Tim (xtimor@gmail.com)
*
* NMEA library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
/*
 *
 * NMEA library
 * URL: http://nmea.sourceforge.net
 * Author: Tim (xtimor@gmail.com)
 * Licence: http://www.gnu.org/licenses/lgpl.html
 * $Id: info.h 10 2007-11-15 14:50:15Z xtimor $
 *
 */

//! \file

#ifndef NMEA_INFO_H
#define NMEA_INFO_H

#include "nmeatime.h"

#define NMEA_SIG_BAD        (0)
#define NMEA_SIG_LOW        (1)
#define NMEA_SIG_MID        (2)
#define NMEA_SIG_HIGH       (3)

#define NMEA_FIX_BAD        (1)
#define NMEA_FIX_2D         (2)
#define NMEA_FIX_3D         (3)

#define NMEA_MAXSAT         (12)
#define NMEA_SATINPACK      (4)
#define NMEA_NSATPACKS      (NMEA_MAXSAT / NMEA_SATINPACK)

#define NMEA_DEF_LAT        (5001.2621)
#define NMEA_DEF_LON        (3613.0595)

#ifdef  __cplusplus
extern "C"
{
#endif

/**
 * Position data in fractional degrees or radians
 */
typedef struct _nmeaPOS
{
  double lat;         //!< Latitude
  double lon;         //!< Longitude

} nmeaPOS;

/**
 * Information about satellite
 * \see nmeaSATINFO
 * \see nmeaGPGSV
 */
typedef struct _nmeaSATELLITE
{
  int     id;         //!< Satellite PRN number
  int     in_use;     //!< Used in position fix
  int     elv;        //!< Elevation in degrees, 90 maximum
  int     azimuth;    //!< Azimuth, degrees from true north, 000 to 359
  int     sig;        //!< Signal, 00-99 dB

} nmeaSATELLITE;

/**
 * Information about all satellites in view
 * \see nmeaINFO
 * \see nmeaGPGSV
 */
typedef struct _nmeaSATINFO
{
  int     inuse;      //!< Number of satellites in use (not those in view)
  int     inview;     //!< Total number of satellites in view
  nmeaSATELLITE sat[NMEA_MAXSAT]; //!< Satellites information

} nmeaSATINFO;

/**
 * Summary GPS information from all parsed packets,
 * used also for generating NMEA stream
 * \see nmea_parse
 * \see nmea_GPGGA2info, nmea_...2info
 */
typedef struct _nmeaINFO
{
  int     smask;      //!< Mask specifying types of packages from which data have been obtained

  nmeaTIME utc;       //!< UTC of position

  int     sig;        //!< GPS quality indicator (0 = Invalid; 1 = Fix; 2 = Differential, 3 = Sensitive)
  int     fix;        //!< Operating mode, used for navigation (1 = Fix not available; 2 = 2D; 3 = 3D)

  double  PDOP;       //!< Position Dilution Of Precision
  double  HDOP;       //!< Horizontal Dilution Of Precision
  double  VDOP;       //!< Vertical Dilution Of Precision

  double  lat;        //!< Latitude in NDEG - +/-[degree][min].[sec/60]
  double  lon;        //!< Longitude in NDEG - +/-[degree][min].[sec/60]
  double  elv;        //!< Antenna altitude above/below mean sea level (geoid) in meters
  double  speed;      //!< Speed over the ground in kilometers/hour
  double  direction;  //!< Track angle in degrees True
  double  declination; //!< Magnetic variation degrees (Easterly var. subtracts from true course)

  nmeaSATINFO satinfo; //!< Satellites information

} nmeaINFO;

void nmea_zero_INFO( nmeaINFO *info );

#ifdef  __cplusplus
}
#endif

#endif /* NMEA_INFO_H */