Joseph Bradshaw / GPSINT

library for parsing GPS NMEA strings using serial receive interrupt

Fork of GPSINT by Joseph Bradshaw

GPSINT library

Library class for intercepting NMEA-0183 ASCII strings from a GPS using a serial interrupt at 4800 baud, error checking, and parsing using the scanf functions to update object associated variables

include the mbed library with this snippet

// mbed GPS Parse Program, tested using the Trimble Copernicus II
#include "mbed.h"
#include "GPSINT.h"

#define TIMEZONE -4 //Eastern Standard Time

Serial pc(USBTX,USBRX);
GPSINT gps(p28, p27);   //Tx,Rx
DigitalOut led1(LED1);

// ---------------- MAIN ------------------------
int main() {        
    pc.baud(921600);
  
    while(1) {
        if(gps.lock != 0){
            led1=!led1;
            
            int gpsHour = (int)((int)gps.utc_time/10000) + TIMEZONE;
            if(gpsHour < 0)
                gpsHour += 24;
            
            int gpsMin = (int)((int)gps.utc_time/100%100);
            int gpsSec = (int)gps.utc_time % 100;
      
            pc.printf("lock=%d %2d:%02d:%02d  %f %c %f %c\r\n", gps.lock, gpsHour,gpsMin,gpsSec,gps.nmea_longitude, gps.ns, gps.nmea_latitude, gps.ew);
            wait(.9);
        }
        else{
            pc.printf("No Lock\r\n");
            wait(1);    
        }        
    }//while(1)
}//main

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