Darren Ulrich / GPSISR

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");
	}   
   }  
}

Diff: GPSISR.h

Revision:
3:e64b8be9ce92
Parent:
2:dbc6c0789611
Child:
4:7240a18102a6
--- a/GPSISR.h	Thu Feb 16 23:55:28 2017 +0000
+++ b/GPSISR.h	Fri Feb 17 23:31:39 2017 +0000
@@ -38,8 +38,28 @@
     // Setup a serial interrupt function to transmit data
     void getline();
     void Rx_interrupt(void);
-    bool isdatardy(void);
-    int getSats(void);
+    bool dataready(void);
+    
+    
+    //void f1(a_struct& struct);
+    //f1(a_struct s);
+    // Reading struct that includes the data for each reading we take
+struct reading {
+    float latitude;     //Signed positive if N, negative if S
+    float longitude;    //Signed positive if E, negative if W
+    uint8_t day;
+    uint8_t month;
+    uint8_t year;
+    uint8_t hour;
+    uint8_t minutes;
+    float   speed;
+    float   altitude;
+    float   bearing;
+    int     satellites;
+};
+struct reading buffer; 
+
+void read(void);
     char msg[256];
     volatile char rx_in;
     bool interrupt;