/*
 * Master Firmware: NMEA Parser
 *
 * This file is part of OpenTrack.
 *
 * OpenTrack is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenTrack 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with OpenTrack. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Ethan Zonca
 * Matthew Kanning
 * Kyle Ripperger
 * Matthew Kroening
 *
 */


#ifndef GPS_H_
#define GPS_H_

#include <stdint.h>

// Duration before GPS fix is declared stale
#define GPS_STALEFIX_MS 60000

enum gps_state
{
    GPS_STATE_ACQUIRING = 0,
    GPS_STATE_FRESHFIX,
    GPS_STATE_STALEFIX,
    GPS_STATE_NOFIX
};


void gps_init();

void gps_update_position();
void gps_update_time(uint8_t* hour, uint8_t* minute, uint8_t* second);
void gps_check_lock(uint8_t* lock, uint8_t* sats);
uint8_t gps_check_nav(void);


void gps_poweron(void);
void gps_poweroff(void);

void gps_acquirefix(void);
uint8_t gps_getstate(void);


#endif /* GPS_H_ */