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/*! \file nmea.h \brief NMEA protocol function library. */
//*****************************************************************************
//
// File Name    : 'nmea.h'
// Title                : NMEA protocol function library
// Author               : Pascal Stang - Copyright (C) 2002
// Created              : 2002.08.27
// Revised              : 2002.08.27
// Version              : 0.1
// Target MCU   : Atmel AVR Series
// Editor Tabs  : 4
//
// NOTE: This code is currently below version 1.0, and therefore is considered
// to be lacking in some functionality or documentation, or may not be fully
// tested.  Nonetheless, you can expect most functions to work.
//
///     \ingroup driver_hw
/// \defgroup nmea NMEA Packet Interface for GPS Receivers (nmea.c)
/// \code #include "nmea.h" \endcode
/// \par Overview
///             This library parses and decodes the standard NMEA data stream from a
/// GPS and stores the position, velocity, and time solutions in the gps.c
/// library.
//
// This code is distributed under the GNU Public License
//              which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************

#ifndef NMEA_H
#define NMEA_H

#include "global.h"
#include "buffer.h"

// constants/macros/typdefs
#define NMEA_BUFFERSIZE         80

// Message Codes
#define NMEA_NODATA             0        // No data. Packet not available, bad, or not decoded
#define NMEA_GPGGA              1       // Global Positioning System Fix Data
#define NMEA_GPVTG              2       // Course over ground and ground speed
#define NMEA_GPGLL              3       // Geographic position - latitude/longitude
#define NMEA_GPGSV              4       // GPS satellites in view
#define NMEA_GPGSA              5       // GPS DOP and active satellites
#define NMEA_GPRMC              6       // Recommended minimum specific GPS data
#define NMEA_UNKNOWN    0xFF// Packet received but not known

// Debugging
//#define NMEA_DEBUG_PKT        ///< define to enable debug of all NMEA messages
//#define NMEA_DEBUG_GGA        ///< define to enable debug of GGA messages
//#define NMEA_DEBUG_VTG        ///< define to enable debug of VTG messages

// functions
void nmeaInit(void);
u08* nmeaGetPacketBuffer(void);
u08 nmeaProcess(cBuffer* rxBuffer);
void nmeaProcessGPGGA(u08* packet);
void nmeaProcessGPVTG(u08* packet);

#endif
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