Hi,
First time I am trying to connect GSM modem (SIM300) with microcontroller. First I am trying to communicate SIM300 with my PC through RS232 port. I am using hyperterminal to send AT commands to SIM300.
Problem I am facing is, my each command is getting echoed back i.e If I type AT<cr> it gives me AT<cr> back. But I think modem should respond with OK.
Can anybody help me why is this happening...?
Regards, Hari
Thanks Andrew... I will take care next time.
About the problem : Now I have resolved this issue, it was hardware issue. No I am able to communicate with SIM300 Module.