Q2686 module just echoes back the Command!

Legacy Legacy AirPrime modules
1

Hi,
I have interfaced the wavecom module to ARM processor. The module just echoes back the Command. In otherwords, if we send AT + CGMI, it responds back with AT +CGMI, no other response.

Any suggestions please…

Thanks,
Praveen

2

Have you made the correct Flow Control (RTS, CTS, etc) connections?

What happens when you send commands manually from Hyperterminal (or whatever)?

3

RTS, CTS connections are proper. I cannot connect module to hyper terminal as I haven’t provided the option.

Thanks…

4

First lesson to lean: always provide the option to connect “manually” to the module!
(hindsight is a wonderful thing!)

You are sending CR to terminate the command, aren’t you…?

5

We are sending CR to terminate the command. Our board supports both SIMCOM and Wavecom Modules. SIMCOM works fine with the same software. I don’t know why Wavecom is behaving like this.

Thanks,
Praveen