Auto UnSubscribe to FCM flow


Hi all,

Did anyone of you faces the problem when using FCM flow control API?
I have an application which subscribe to UART1 to periodically send data (every 1 minute).

I notice that after some times say 2 hours, the application will automatically turns back to AT mode event i didn’t switch internally or externally to AT mode.

Beside, when above case found, i was unable to switch back to DATA mode with reply code CME ERROR: 3. This can only be recover when i re-sunscribe to the FCM service and switch it back to DATA mode manually.

Anyone can help me?? :slight_smile: