Looping Issue

[ram1505]

Hi, When I use this program with my Simcom module, I'm getting stuck at the power_on loop and getting the following:

AT SIM ON AT AT AT AT AT AT AT AT AT AT GSM OFF AT SIM ON AT AT AT AT AT AT AT AT AT AT RGSM OFF

[ram1505]

Hi, Can you help? I'm having issues with the power_on loop. The module gets stuck in the loop.

[KudosAbhay]

See, what's happening here is:

• You check if GSM Module is enabled and connected to required Serial Port
• Then, you check if GSM is able to communicate via that Serial Port
• If it is able to communicate via Serial Port, then you check if it is replying properly to your AT command or not.

As per your issue, it seems like you have passed the first step, but in the second step your GSM module is not able to revert back to your Arduino with proper reply.

Hence, you are getting the message 'GSM OFF'. I'd recommend you to try to send AT commands to your GSM module manually first and see, if it is reverting back properly. This will help you to know if it is working properly or not.

[KudosAbhay]

Hi Ram, as I am not receiving any reply from your side. I assume your error is cleared.

Hope you revert back with a solution which helped you. This might help others as well.