File content as of revision 2:b6012cd91657:

#pragma once 

#include "mbed.h"
#include "Pipe.h"
#include "SerialPipe.h"
#include "C027_PinNames.h"

class GPSParser
{
public:
    #define WAIT      -1
    #define NOT_FOUND  0
    
    #define UBX         0x100000
    #define NMEA        0x200000
    #define LENGTH(x)   (x & 0x00FFFF)
    #define PROTOCOL(x) (x & 0xFF0000)

    virtual int getMessage(char* buf, int len) = 0; 
    virtual int putNmea(const char* buf, int len) = 0;
    virtual int putUbx(const unsigned char cls, unsigned char id, unsigned char* buf, int len) = 0;
    
    static const char* findNmeaItemPos(int ix, const char* start, const char* end);
    static bool getNmeaItem(int ix, char* buf, int len, double& val);
    static bool getNmeaItem(int ix, char* buf, int len, int& val, int base/*=10*/);
    static bool getNmeaItem(int ix, char* buf, int len, char& val);
protected:
    static int _getMessage(Pipe<char>* pipe, char* buf, int len);
    static int _parseNmea(Pipe<char>* pipe, int len);
    static int _parseUbx(Pipe<char>* pipe, int len);
    static int _putNmea(Stream* stream, const char* buf, int len);
    static int _putUbx(Stream* stream, const unsigned char cls, unsigned char id, unsigned char* buf, int len);
    static const char toHex[16];
};

class GPSSerial : public Serial, public GPSParser
{
public:
    GPSSerial(PinName tx = GPSTXD, PinName rx = GPSRXD, int baudrate = GPSBAUD);
    virtual ~GPSSerial(void);
    
    virtual int getMessage(char* buf, int len);
    virtual int putNmea(const char* buf, int len)
        { return _putNmea(this, buf, len); }
    virtual int putUbx(const unsigned char cls, unsigned char id, unsigned char* buf, int len)
        { return _putUbx(this, cls, id, buf, len); }
protected:
    void serialRxIrq(void);
    virtual char next(void) { return _pipe.next(); }
    Pipe<char> _pipe;
};

class GPSI2C : public I2C, public GPSParser
{
public: 
    GPSI2C(PinName sda = GPSSDA, PinName scl = GPSSCL);
    bool detect(void);
    
    virtual int getMessage(char* buf, int len);
    // 
    virtual int putNmea(const char* buf, int len)
        { return 0/*_putNmea(NULL, buf, len)*/; }
    virtual int putUbx(const unsigned char cls, unsigned char id, unsigned char* buf, int len)
        { return 0/*_putUbx(NULL, cls, id, buf, len)*/; }
protected:
    virtual char next(void) { return _pipe.next(); }
    int _get(char* buf, int len);          // read the NMEA or UBX stream
    int _put(const char* buf, int len);    // Write the NMEA or UBX stream

    Pipe<char> _pipe; 
    bool found;
    static const char REGLEN;
    static const char REGSTREAM;
};