Tisham Dhar
Adafruit GPS library sample with Xadow GPS and Xadow Oled
Dependencies: MBed_Adafruit-GPS-Library SSD1308_128x64_I2C USBDevice mbed
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AVC_gps
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AVR Competition
Revision 1:2387ce3e58c8, committed 2014-11-21
- Comitter:
- whatnick
- Date:
- Fri Nov 21 13:13:38 2014 +0000
- Parent:
- 0:59cfe30c337c
- Commit message:
- Initial commit of GPS parsing with Adafruit GPS library
Changed in this revision
diff -r 59cfe30c337c -r 2387ce3e58c8 MBed_Adafruit-GPS-Library.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MBed_Adafruit-GPS-Library.lib Fri Nov 21 13:13:38 2014 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/mlee350/code/MBed_Adafruit-GPS-Library/#a23e3099bb0a
diff -r 59cfe30c337c -r 2387ce3e58c8 SSD1308_128x64_I2C.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SSD1308_128x64_I2C.lib Fri Nov 21 13:13:38 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/wim/code/SSD1308_128x64_I2C/#fa18169dd7e6
diff -r 59cfe30c337c -r 2387ce3e58c8 USBDevice.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice.lib Fri Nov 21 13:13:38 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/yihui/code/USBDevice/#74ca09725b68
diff -r 59cfe30c337c -r 2387ce3e58c8 main.cpp
--- a/main.cpp Thu Oct 09 17:11:51 2014 +0000
+++ b/main.cpp Fri Nov 21 13:13:38 2014 +0000
@@ -1,25 +1,90 @@
#include "mbed.h"
+#include "pinmap.h"
+#include "SSD1308.h"
+#include "MBed_Adafruit_GPS.h"
+
+Serial gps(P0_19,P0_18);
+
+#define DEBUG
+
+#ifdef DEBUG
+#include "USBSerial.h" // To use USB virtual serial, a driver is needed, check http://mbed.org/handbook/USBSerial
+#define LOG(args...) pc.printf(args)
+USBSerial pc;
+#else
+#define LOG(args...)
+#endif
+
+#define HARD_SPI 1
+#define I2C_FREQ 100000
-DigitalOut led(LED_GREEN);
-Serial gps(PTC17, PTC16);
-Serial pc(USBTX, USBRX);
+I2C i2c(I2C_SDA, I2C_SCL);
+//Use Xadow OLED for display
+SSD1308 oled = SSD1308(i2c, SSD1308_SA0);
+
+//GPS Data
+
-int main(){
- gps.baud(4800);
+int main()
+{
+ Adafruit_GPS myGPS(&gps);
+ char c; //when read via Adafruit_GPS::read(), the class returns single character stored here
+ Timer refresh_Timer; //sets up a timer for use in loop; how often do we print GPS info?
+ const int refresh_Time = 1000; //refresh time in ms
+
+ myGPS.begin(9600);
+ oled.clearDisplay();
+ oled.writeString(0,0,"GPS Test");
+ oled.writeString(1,0,"GPS Start");
+
+ wait(1);
+
+ refresh_Timer.start(); //starts the clock on the timer
+
while (true) {
- char str [200];
- char c;
- if (gps.readable()){
- c = gps.getc();
- if (c == '$') {
- gps.scanf ("%199s",str);
- pc.printf("%s \n",str);
- //while (n >=
+ c = myGPS.read(); //queries the GPS
+
+ if (c) {
+ pc.printf("%c", c); //this line will echo the GPS data if not paused
+ }
+
+ //check if we recieved a new message from GPS, if so, attempt to parse it,
+ if ( myGPS.newNMEAreceived() ) {
+ if ( !myGPS.parse(myGPS.lastNMEA()) ) {
+ continue;
}
- }else{
- //pc.printf("No gps data \n");
}
- led = !led; // toggle led
- //wait(0.001f);
+
+
+
+ //check if enough time has passed to warrant printing GPS info to screen
+ //note if refresh_Time is too low or pc.baud is too low, GPS data may be lost during printing
+ if (refresh_Timer.read_ms() >= refresh_Time) {
+ refresh_Timer.reset();
+ pc.printf("Time: %d:%d:%d.%u\n", myGPS.hour, myGPS.minute, myGPS.seconds, myGPS.milliseconds);
+ pc.printf("Date: %d/%d/20%d\n", myGPS.day, myGPS.month, myGPS.year);
+ pc.printf("Fix: %d\n", (int) myGPS.fix);
+ pc.printf("Quality: %d\n", (int) myGPS.fixquality);
+ if (myGPS.fix) {
+ pc.printf("Location: %5.2f%c, %5.2f%c\n", myGPS.latitude, myGPS.lat, myGPS.longitude, myGPS.lon);
+ pc.printf("Speed: %5.2f knots\n", myGPS.speed);
+ pc.printf("Angle: %5.2f\n", myGPS.angle);
+ pc.printf("Altitude: %5.2f\n", myGPS.altitude);
+ pc.printf("Satellites: %d\n", myGPS.satellites);
+ }
+
+ if (myGPS.fix) {
+ char oled_str[20];
+ oled.writeString(1,0,"GPS Lock ");
+ sprintf(oled_str,"LAT:%f",myGPS.latitude);
+ oled.writeString(2,0,oled_str);
+ sprintf(oled_str,"LON:%f",myGPS.longitude);
+ oled.writeString(3,0,oled_str);
+ sprintf(oled_str,"ALT:%f",myGPS.altitude);
+ oled.writeString(4,0,oled_str);
+ } else {
+ oled.writeString(1,0,"GPS Lost ");
+ }
+ }
}
-}
\ No newline at end of file
+}
diff -r 59cfe30c337c -r 2387ce3e58c8 mbed.bld --- a/mbed.bld Thu Oct 09 17:11:51 2014 +0000 +++ b/mbed.bld Fri Nov 21 13:13:38 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file