Hi everyone:
Im making my final thesis with a GPS-GSM Module (model GM862-GPS from Telit) builded inside a board to be plugged into a Arduino (amazing arduino!!).
This is the GM862-GPS builded into a specific board for Arduino
http://i75.photobucket.com/albums/i296/ … Dibujo.jpg
And this is my device together.
http://i75.photobucket.com/albums/i296/ … MG3750.jpg http://i75.photobucket.com/albums/i296/ … MG3752.jpgAs you know, the arduino communicate with the computer by a USB cable, but the arduino drivers emulate a serial port. I think that my problems are here, becouse with a serial terminal (arduino bootloader have one, but I check another two) I try to send AT comands but I don´t have any response. I also check the arduino without the GM862 module, and it works fine, That means than I can upload with the emulated serial, code from my Laptop to the micro Atmega168 and it works.
So, the problem is when I plug the Telit to Arduino board, I swich on (two seconds pressing the button) the led is lighting and start sending comands trought the serial terminal, but nothing!!!
And I check different rates (baud) 4800, 9600, …, 115200, almost all of them, and diferents flow control. With some of that rates sometimes (when I change some config in the com3 hardware setup) the response can be the same sentence I write or stranges caracters, if that is a response!!!
I don´t know what can i do now, tomorrow, im going to try with an osciloscope, cos maybe the GM862, don´t send anything to the arduino.
PLEASE HELP!!! hehe
Thanks for your time if you have been read all, and sorry about my english
Bye