at_client routine, the test at instruction does not return any information.

[peter.min]

Hi Didrik Rokhaug,

sdk:ncs v1.2

Routine path:D:\ncs\v1.2.0\nrf\samples\nrf9160\at_client

The routine is attached:

at_client.rar
The test results are shown in the figure below:

After sending multiple 0A0D instructions, the program does not return a value after sending other normal instructions again.

This error will cause the program to become stuck in the event of a serial communication program exception.

This phenomenon can cause the customer to misdiagnose that there is a bug in the AT instruction.

Please further increase the module AT instruction fault tolerance mechanism.

Kind regards, Peter.Min

[Didrik Rokhaug]

A PR with a proposed fix has been opened: https://github.com/nrfconnect/sdk-nrf/pull/3033