File content as of revision 0:1ababa0d0c42:

#include "mbed.h"
#include "GPS.h"
#include "MDM.h"


//----------------------------------------------------------------------
/* This example was tested on C027-U20 and C027-G35 with the on board modem. 
   
   Additionally it was tested with a shield where the SARA-G350 RX/TX/PWRON 
   is connected to D0/D1/D4 and the GPS SCL/SDA is connected D15/D15. In this 
   configuration the following platforms were tested (it is likely that others 
   will work as well)
   - U-BLOX:    C027-XX.
   - NXP:       LPC1549v2 
   - Freescale: FRDM-KL25Z, FRDM-KL46Z
   - STM:       NUCLEO-F401RE, NUCLEO-F030R8
*/
#if defined(TARGET_UBLOX_C027)
  #define C027_USEONBOARD // remove this if you have the GSM/GPS shield mounted
#endif

#ifdef C027_USEONBOARD
  #include "C027.h"
  C027 c027;
#endif

// no tracing if serial is shared with the VCP
#define DOTRACE ((USBRX!=MDMRXD)&&(USBTX!=MDMTXD))
#define TRACE     (!DOTRACE)?:printf

int main(void)
{
    int ret;
    char buf[2048] = "";

    // only trace if the serial is different from our modem port
    if (DOTRACE) {
        Serial pc(USBTX,USBRX);
        pc.baud(115200);
    }
    
    wait_ms(1000);
    
    TRACE("GSM/GPS Support Example\r\n");
    
    // turn on the supplies of the Modem and the GPS
    c027.mdmPower(false);
    c027.gpsPower(true);
    wait(2);
    
    // Create the GPS object
#if GPSADR    // use GPSI2C class
    GPSI2C gps(GPSSDA,GPSSCL,GPSADR); 
#elif GPSBAUD // or GPSSerial class 
    GPSSerial gps(GPSTXD,GPSRXD,GPSBAUD); 
#else
    #warning "please define the pins for the GPS"
#endif
    
    // open the PC serial port and (use the same baudrate)
    Serial pc2(P4_28, P4_29);
    pc2.baud(9600);
    
    TRACE("Checking GPS\r\n");
//    char link[128] = "";
//    unsigned int i = 0xFFFFFFFF;
    const int wait = 100;
    bool abort = false;
    //DigitalOut led(LED1);
    double hdop=99.99;
    while (!abort) {
    //    led = !led;        
        while ((ret = gps.getMessage(buf, sizeof(buf))) > 0)
        {
            int len = LENGTH(ret);
//            TRACE("NMEA: %.*s\r\n", len-2, buf); 
//            pc2.printf("NMEA: %.*s\r\n", len-2, buf); 
#if 1
            if ((PROTOCOL(ret) == GPSParser::NMEA) && (len > 6))
            {
                if (!strncmp("$GPGLL", buf, 6))
                {
                    double la = 0, lo = 0;
                    double  utc;
                    char ch;
                    if (gps.getNmeaAngle(1,buf,len,la) && 
                        gps.getNmeaAngle(3,buf,len,lo) && 
                        gps.getNmeaItem(5,buf,len,utc) && 
                        gps.getNmeaItem(6,buf,len,ch) && ch == 'A')
                    {
    //                    TRACE("GPS Location: %.5f %.5f\r\n", la, lo); 
                        TRACE("%06d,%.6f,%.6f\r\n", (long)utc, la, lo); 
                        pc2.printf("%06d,%.6f,%.6f,%.2f\r\n", (long)utc, la, lo, hdop); 
    //                    sprintf(link, "I am here!\n"
    //                                  "https://maps.google.com/?q=%.5f,%.5f", la, lo); 
                    }
                }
                if (!strncmp("$GPGSA", buf, 6))
                {
                    gps.getNmeaItem(16,buf,len,hdop);
                }
            }

#endif
#if 0
            if ((PROTOCOL(ret) == GPSParser::NMEA) && (len > 6) && !strncmp("$GPGGA", buf, 6))
            {
                double la = 0, lo = 0;
                double  utc, alt;
                char ch;
                if (gps.getNmeaAngle(2,buf,len,la) && 
                    gps.getNmeaAngle(4,buf,len,lo) && 
                    gps.getNmeaItem(11,buf,len,alt) && 
                    gps.getNmeaItem(1,buf,len,utc) && 
                    gps.getNmeaItem(6,buf,len,ch) && ch == 'A')
                {
//                    TRACE("GPS Location: %.5f %.5f\r\n", la, lo); 
                    TRACE("%06d,%.6f,%.6f,%.2f\r\n", (long)utc, la, lo, alt); 
                    pc2.printf("%06d,%.6f,%.6f,%.2f\r\n", (long)utc, la, lo, alt); 
//                    sprintf(link, "I am here!\n"
//                                  "https://maps.google.com/?q=%.5f,%.5f", la, lo); 
                }
            }
#endif
        }
        wait_ms(wait);
    }
    gps.powerOff();
    TRACE("Shutdown\r\n");
    // now it is safe to switch LDOs off
    c027.gpsPower(false);
    return 0;
}