A GPS serial interrupt service routine that has an on the fly nmea parser. Works with a STM32F411RE and a Adafruit GPS logger.

Dependents:   Bicycl_Computer_NUCLEO-F411RE Bicycl_Computer_NUCLEO-L476RG

Fork of GPS by Simon Ford

main.cpp

#include "mbed.h"
#include "GPSISR.h"

#define PIN_RX_GPS      PA_12 //GPS Shield RX pin
#define PIN_TX_GPS      PA_11 //GPS Shield TX pin
Serial pc(USBTX, USBRX);

// Set up serial interrupe service handler for gps characters.
GPS MyGPS(PIN_TX_GPS,PIN_RX_GPS, 9600);
int main()
{
    while (1) {
	if (MyGPS.dataready()) {
					MyGPS.read();
					pc.printf("NMEA has valid data");
					pc.printf("Sats : %d \n", MyGPS.buffer.satellites);
					pc.printf("%d-%d-%d\n", MyGPS.buffer.month, MyGPS.buffer.day, MyGPS.buffer.year);
					pc.printf("%d:%d:%d\n", MyGPS.buffer.hours, MyGPS.buffer.minutes, MyGPS.buffer.seconds);
	}
	else {
                pc.printf("NMEA has no valid data");
	}   
   }  
} 
Revision:
4:7240a18102a6
Parent:
3:e64b8be9ce92
diff -r e64b8be9ce92 -r 7240a18102a6 GPSISR.cpp
--- a/GPSISR.cpp	Fri Feb 17 23:31:39 2017 +0000
+++ b/GPSISR.cpp	Sat Feb 18 01:37:25 2017 +0000
@@ -61,8 +61,9 @@
 
 void GPS::read(void) {
     
-    buffer.hour = nmea.getHour();
+    buffer.hours = nmea.getHour();
     buffer.minutes = nmea.getMinute();
+    buffer.seconds = nmea.getSecond();
     buffer.day = nmea.getDay();
     buffer.month = nmea.getMonth();
     buffer.year = nmea.getYear();