flight/modules/GPS/inc/NMEA.h

   1 /**
   2  ******************************************************************************
   3  * @addtogroup OpenPilotModules OpenPilot Modules
   4  * @{
   5  * @addtogroup GPSModule GPS Module
   6  * @brief Process GPS information (NMEA format)
   7  * @{
   8  *
   9  * @file       NMEA.h
  10  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
  11  * @brief      GPS module, handles GPS and NMEA stream
  12  * @see        The GNU Public License (GPL) Version 3
  13  *
  14  *****************************************************************************/
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  23  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  24  * for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  */
  30
  31 #ifndef NMEA_H
  32 #define NMEA_H
  33
  34 #include <stdbool.h>
  35 #include <stdint.h>
  36 #include "GPS.h"
  37
  38 #define NMEA_MAX_PACKET_LENGTH 96 // 82 max NMEA msg size plus 12 margin (because some vendors add custom crap) plus CR plus Linefeed
  39
  40 extern bool NMEA_update_position(char *nmea_sentence, GPSPositionSensorData *GpsData);
  41 extern bool NMEA_checksum(char *nmea_sentence);
  42 extern int parse_nmea_stream(uint8_t *, uint8_t, char *, GPSPositionSensorData *, struct GPS_RX_STATS *);
  43
  44 #endif /* NMEA_H */