File content as of revision 2:d8e1e37eea36:

/***********************************
This is the Adafruit GPS library - the ultimate GPS library
for the ultimate GPS module!

Tested and works great with the Adafruit Ultimate GPS module
using MTK33x9 chipset
    ------> http://www.adafruit.com/products/746
Pick one up today at the Adafruit electronics shop 
and help support open source hardware & software! -ada

Adafruit invests time and resources providing this open source code, 
please support Adafruit and open-source hardware by purchasing 
products from Adafruit!

Written by Limor Fried/Ladyada  for Adafruit Industries.  
BSD license, check license.txt for more information
All text above must be included in any redistribution
****************************************/
#include "mbed.h"
#include <stdint.h>
#include <math.h>
#include <ctype.h>

#ifndef _MBED_ADAFRUIT_GPS_H
#define _MBED_ADAFRUIT_GPS_H


// different commands to set the update rate from once a second (1 Hz) to 10 times a second (10Hz)
// Note that these only control the rate at which the position is echoed, to actually speed up the
// position fix you must also send one of the position fix rate commands below too.
#define PMTK_SET_NMEA_UPDATE_100_MILLIHERTZ  "$PMTK220,10000*2F" // Once every 10 seconds, 100 millihertz.
#define PMTK_SET_NMEA_UPDATE_200_MILLIHERTZ  "$PMTK220,5000*1B"  // Once every 5 seconds, 200 millihertz.
#define PMTK_SET_NMEA_UPDATE_1HZ  "$PMTK220,1000*1F"
#define PMTK_SET_NMEA_UPDATE_2HZ  "$PMTK220,500*2B"
#define PMTK_SET_NMEA_UPDATE_5HZ  "$PMTK220,200*2C"
#define PMTK_SET_NMEA_UPDATE_10HZ "$PMTK220,100*2F"
// Position fix update rate commands.
#define PMTK_API_SET_FIX_CTL_100_MILLIHERTZ  "$PMTK300,10000,0,0,0,0*2C" // Once every 10 seconds, 100 millihertz.
#define PMTK_API_SET_FIX_CTL_200_MILLIHERTZ  "$PMTK300,5000,0,0,0,0*18"  // Once every 5 seconds, 200 millihertz.
#define PMTK_API_SET_FIX_CTL_1HZ  "$PMTK300,1000,0,0,0,0*1C"
#define PMTK_API_SET_FIX_CTL_5HZ  "$PMTK300,200,0,0,0,0*2F"
// Can't fix position faster than 5 times a second!


#define PMTK_SET_BAUD_57600 "$PMTK251,57600*2C"
#define PMTK_SET_BAUD_9600 "$PMTK251,9600*17"

// turn on only the second sentence (GPRMC)
#define PMTK_SET_NMEA_OUTPUT_RMCONLY "$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29"
// turn on GPRMC and GGA
#define PMTK_SET_NMEA_OUTPUT_RMCGGA "$PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*28"
// turn on ALL THE DATA
#define PMTK_SET_NMEA_OUTPUT_ALLDATA "$PMTK314,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0*28"
// turn off output
#define PMTK_SET_NMEA_OUTPUT_OFF "$PMTK314,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*28"

// to generate your own sentences, check out the MTK command datasheet and use a checksum calculator
// such as the awesome http://www.hhhh.org/wiml/proj/nmeaxor.html

#define PMTK_LOCUS_STARTLOG  "$PMTK185,0*22"
#define PMTK_LOCUS_LOGSTARTED "$PMTK001,185,3*3C"
#define PMTK_LOCUS_QUERY_STATUS "$PMTK183*38"
#define PMTK_LOCUS_ERASE_FLASH "$PMTK184,1*22"
#define LOCUS_OVERLAP 0
#define LOCUS_FULLSTOP 1

#define PMTK_ENABLE_SBAS "$PMTK313,1*2E"
#define PMTK_ENABLE_WAAS "$PMTK301,2*2E"

// standby command & boot successful message
#define PMTK_STANDBY "$PMTK161,0*28"
#define PMTK_STANDBY_SUCCESS "$PMTK001,161,3*36"  // Not needed currently
//$PMTK010,001*2E
//$PMTK010,002*2D
#define PMTK_AWAKE "$PMTK010,002*2D"

// ask for the release and version
#define PMTK_Q_RELEASE "$PMTK605*31"

// request for updates on antenna status 
#define PGCMD_ANTENNA "$PGCMD,33,1*6C" 
#define PGCMD_NOANTENNA "$PGCMD,33,0*6D" 

// how long to wait when we're looking for a response
#define MAXWAITSENTENCE 10



class Adafruit_GPS {
 public:
  void begin(int baud); 

  Adafruit_GPS(Serial * ser);

  char *lastNMEA(void);
  bool newNMEAreceived();
  void common_init(void);
  void sendCommand(char *);
  void pause(bool b);

  bool parseNMEA(char *response);
  uint8_t parseHex(char c);

  char read(void);
  bool parse(char * nmea);
  void interruptReads(bool r);

  bool wakeup(void);
  bool standby(void);

  uint8_t hour, minute, seconds, year, month, day;
  uint16_t milliseconds;
  float latitude, longitude, geoidheight, altitude;
  float speed, angle, magvariation, HDOP;
  char lat, lon, mag;
  bool fix;
  uint8_t fixquality, satellites;

  bool waitForSentence(const char *sentence, uint8_t max = MAXWAITSENTENCE);
  bool LOCUS_StartLogger(void);
  bool LOCUS_ReadStatus(void);

  uint16_t LOCUS_serial, LOCUS_records;
  uint8_t LOCUS_type, LOCUS_mode, LOCUS_config, LOCUS_interval, LOCUS_distance, LOCUS_speed, LOCUS_status, LOCUS_percent;
 private:
  bool paused;
  
  Serial * gpsSerial;
};

#endif