Vehicle tracking using Gps and Gsm

I am stuck in my project. I am trying to make a tacking system in which when user send a text message ( say "track") to sim900A module, It fetches the location from GPS and sends it to the owner.Moreover if the user sends stop message the arduino should stop sending GPS location. Here I am not able to get the location while using GSM module and while using GPS module GSm is not working. Please Suggest changes .

Mini_prep.ino (2.69 KB)

I cannot open a downloaded .ino file on my device. If you post the code according to the guidelines in the how to use this forum-please read stickies every one can see the code and offer help.

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html .
Then look down to item #7 about how to post your code.
It will be formatted in a scrolling window that makes it easier to read.

Thanks.. Tom... :slight_smile: