Sam Clarke
An SMS based GPS tracker using the Adafruit Ultimate GPS module http://www.adafruit.com/products/746 and the Seeed Studio GPRS shield (Sim900 chipset) http://www.seeedstudio.com/depot/gprs-shield-p-779.html?cPath=132_134
Dependencies: GPS MODSERIAL mbed-rtos mbed
SMS based GPS tracker
This is an SMS based GPS tracker using using the Adafruit Ultimate GPS module and the Seeed studio GPRS arduino shield [SIM900 chipset]. The idea of this project is to leverage the free SMS between Virgin mobile prepaid SIM cards in Australia for long distance communication.
Currently the GPRS shield is switched on manually, and should be done about 10 seconds before powering the mbed/GPS in order to disable echo properly during start up. This could easily be fixed by switching the GPRS shield with the mbed at start up, waiting the 10 seconds, set the echo then flush the buffer.
The mbed can read all 160 ASCII chars sent in a message for control.
The Seeed GPRS shield http://www.seeedstudio.com/depot/gprs-shield-p-779.html?cPath=132_134
The Adafruit Ultimate GPS http://www.adafruit.com/products/746
Revision 14:5a33972c09e0, committed 2012-10-21
- Comitter:
- SamClarke
- Date:
- Sun Oct 21 09:30:17 2012 +0000
- Parent:
- 13:d8ee6b45bd0a
- Commit message:
- Added cardinal directions (N,NNE,ENE,E,ESE,SSE,S etc)
Changed in this revision
| GPS.lib | Show annotated file Show diff for this revision Revisions of this file |
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/GPS.lib Sat Oct 13 04:28:51 2012 +0000 +++ b/GPS.lib Sun Oct 21 09:30:17 2012 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/SamClarke/code/GPS/#dcc14e81f8be +http://mbed.org/users/SamClarke/code/GPS/#5cb504ce2793
--- a/main.cpp Sat Oct 13 04:28:51 2012 +0000
+++ b/main.cpp Sun Oct 21 09:30:17 2012 +0000
@@ -81,14 +81,8 @@
GPRS.printf("AT+CMGS=\"%s\"\r\n", NUMBER);
wait(1);
// Write out the GPS data in a message
- GPRS.printf("UTC Time: %d:%d:%2.2f \nAltitude: %3.2fm\nSpeed: %3.2f Kn\nHeading: %3.2f Deg\nGPS data grade: [%c]\nSatellites in use: [%d]\nSatFix code: [%d] \nFix type: ",
- gps.hours, gps.minutes, gps.seconds, gps.altitude, gps.speed, gps.heading, gps.validity, gps.satellites, gps.fixtype);
- if(gps.fixtype == 1) {
- GPRS.printf("Positive");
- }
- if(gps.fixtype == 2) {
- GPRS.printf("Differential");
- }
+ GPRS.printf("UTC Time: %d:%d:%2.2f \nAltitude: %3.2fm\nSpeed: %3.2f Kph\nHeading: %3.2f %s\nGPS data grade: [%c]\nSatellites in use: [%d]\nSatFix code: [%d] \nFix type: %s",
+ gps.hours, gps.minutes, gps.seconds, gps.altitude, gps.kph, gps.heading, gps.cardinal, gps.validity, gps.satellites, gps.fixtype, gps.fix);
wait(1);
// Send it...
GPRS.putc(0x1A);