u-blox / C027_Support

support library for C027 helper functions for Buffer Pipes, Buffered Serial Port (rtos capable) and GPS parsing. It includes modem APIs for USSD, SMS and Sockets.

Dependents:   HTTPClient_Cellular_HelloWorld Cellular_HelloMQTT MbedSmartRestMain Car_Bon_car_module ... more

This library is intended to be used with u-blox products such as the C027 or a shield with u-blox cellular and GPS modules like the cellular and positioning shield from Embedded Artist.

For 2G/GSM and 3G/UMTS you need to:

  • have a SIM card and know its PIN number
  • need to know you network operators APN setting These setting should be passed to the connect or init and join functions. You can also extend the APN database in MDMAPN.h.

For CDMA products you need to make sure that you have provisioned and activated the modem with either Sprint or Verizon.

GPS.h

Committer:
mazgch
Date:
2014-03-24
Revision:
19:2b5d097ca15d
Parent:
18:e5697801df29
Child:
24:0e287a85ac9e

File content as of revision 19:2b5d097ca15d:

#pragma once 

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

#ifdef TARGET_UBLOX_C027
 // if we detect the C027 platform we will assign the 
 // default pinname and baudrate in the constructor 
 // this helper macro will be used. 
 #define _C027DEFAULT(name) = name
#else
 #define _C027DEFAULT(name)
#endif

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 send(const char* buf, int len);
    virtual int sendNmea(const char* buf, int len);
    virtual int sendUbx(unsigned char cls, unsigned char id, const void* buf = NULL, 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);
    static bool getNmeaAngle(int ix, char* buf, int len, double& d);
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);
    virtual int _send(const void* buf, int len) = 0;
    static const char toHex[16];
};

class GPSSerial : public SerialPipe, public GPSParser
{
public:
    GPSSerial(PinName tx    _C027DEFAULT( GPSTXD ), 
              PinName rx    _C027DEFAULT( GPSRXD ), 
              int baudrate  _C027DEFAULT( GPSBAUD ),
              int rxSize    = 256 , 
              int txSize    = 128 );
    virtual int getMessage(char* buf, int len);
protected:
    virtual int _send(const void* buf, int len);
};

class GPSI2C : public I2C, public GPSParser
{
public: 
    GPSI2C(PinName sda          _C027DEFAULT( GPSSDA ), 
           PinName scl          _C027DEFAULT( GPSSCL ),
           unsigned char i2cAdr _C027DEFAULT( GPSADR ), 
           int rxSize           = 256 );
    bool detect(void);
    
    virtual int getMessage(char* buf, int len);
    virtual int send(const char* buf, int len);
    virtual int sendNmea(const char* buf, int len);
    virtual int sendUbx(unsigned char cls, unsigned char id, const void* buf = NULL, int len = 0);
protected:
    bool writeable(void) { return true; }
    bool putc(int c)     { char ch = c; return send(&ch, 1); }
    virtual int _send(const void* buf, int len);
    int _get(char* buf, int len);                 // read the NMEA or UBX stream
    
    Pipe<char> _pipe; 
    bool found;
    unsigned char _i2cAdr; 
    static const char REGLEN;
    static const char REGSTREAM;
};