example2.cpp

00001 #ifdef COMPILE_EXAMPLE2_CODE_MODGPS
00002 
00003 #include "mbed.h"
00004 #include "GPS.h"
00005 
00006 Serial pc(USBTX, USBRX);
00007 DigitalOut led1(LED1);
00008 DigitalOut led2(LED2);
00009 DigitalOut led3(LED3);
00010 DigitalOut led4(LED4);
00011 
00012 Timeout t2, t3, t4;
00013 
00014 void t2out(void) { led2 = 0; }
00015 void t3out(void) { led3 = 0; }
00016 void t4out(void) { led4 = 0; }
00017 
00018 void blip2(void) { led2 = 1; t2.attach(&t2out, 0.1); }
00019 void blip3(void) { led3 = 1; t3.attach(&t3out, 0.1); }
00020 void blip4(void) { led4 = 1; t4.attach(&t4out, 0.1); }
00021 
00022 int main() {
00023     GPS *gps = new GPS(NC, p25);
00024     GPS_Time q1;
00025     GPS_Geodetic *geo;
00026     
00027     pc.baud(115200);
00028     
00029     gps->baud(9600);
00030     gps->format(8, Serial::None, 1);
00031     
00032     gps->ppsAttach(p29, GPS::ppsFall );
00033 
00034     gps->attach_pps(&blip2);
00035     gps->attach_gga(&blip3);
00036     gps->attach_rmc(&blip4);
00037 
00038     while(1) {
00039         // Every 3 seconds, flip LED1 and print the basic GPS info.
00040         wait(3);
00041         flip1();
00042         pc.printf("Method 1. Lat = %.4f ", gps->latitude());
00043         pc.printf("Lon = %.4f ", gps->longitude());
00044         pc.printf("Alt = %.4f ", gps->altitude());
00045         gps->timeNow(&q1);
00046         pc.printf("%02d:%02d:%02d %02d/%02d/%04d\r\n", 
00047             q1.hour, q1.minute, q1.second, q1.day, q1.month, q1.year);
00048             
00049         // Alternative method that does the same thing.
00050         geo = gps->geodetic();        
00051         pc.printf("Method 2. Lat = %.4f ", geo->lat);
00052         pc.printf("Lon = %.4f ", geo->lon);
00053         pc.printf("Alt = %.4f ", geo->alt);
00054         delete(geo);
00055         
00056         GPS_Time *q2 = gps->timeNow();
00057         pc.printf("%02d:%02d:%02d %02d/%02d/%04d\r\n\n", 
00058             q2->hour, q2->minute, q2->second, q2->day, q2->month, q2->year);
00059         delete(q2);        
00060     }
00061 }
00062 
00063 #endif