I would like to congradulate you because i am really struggling with the the similar project, but i only have to sent a text message in case thereis an intrusion in remote place. I have to use PIC16F877 to send AT commands to the GSM modem via the RS232 cable.
I am expected to programme the microcontroller using C code. So i have a bit of problem with how to programme AT commands using C. So, i am really desparate because i need to get going. So can you please help me with the code. Plsss i need your help