Log show only the first few lines

RE: Log show only the first few lines

Susheel Nuguru — Fri, 06 Dec 2019 08:42:42 GMT

Thanks for letting us know this. I will create a ticket to let the developers know about this.
For your reference, the internal thread to fix it is NRFFOETT-2407

RE: Log show only the first few lines

nevi — Fri, 06 Dec 2019 07:06:43 GMT

There was not hardfault. The other functionalities worked well regardless of the value of the NRF_LOG_ALLOW_OVERFLOW.

RE: Log show only the first few lines

Susheel Nuguru — Thu, 05 Dec 2019 07:47:34 GMT

Sorry for the late response.

Are you sure that if NRF_LOG_ALLOW_OVERFLOW is set to 1, only logging stops but the application is still running? I am guessing that there is a stack overflow and the core might have hardfaulted?

RE: Log show only the first few lines

nevi — Fri, 22 Nov 2019 08:20:20 GMT

I think, the problem was that the log buffer (SEGGER_RTT_CONFIG_BUFFER_SIZE_UP) was too small and the NRF_LOG_ALLOW_OVERFLOW was 1.

If I change the NRF_LOG_ALLOW_OVERFLOW to zero, it worked fine. Of course some logs missed, but the logging not stop.

But if the NRF_LOG_ALLOW_OVERFLOW is 1 and the log buffer overflowed, no more log received.

The documentation said:

"If set then oldest logs are overwritten. Otherwise a marker is injected informing about overflow."

I think it works the other way around.

And not mentioned to the logging will stop after overflow. And I can't see the marker when the buffers overflowed.

RE: Log show only the first few lines

Susheel Nuguru — Thu, 21 Nov 2019 18:43:45 GMT

There is a lot of processing in NRF_LOG_XX that eventually leads to Segger_RTT_Printf . If Segger_printf is working fine and NRF_LOG_XX is not, then there must be either a bug in NRF or you have not selected enough buffer. In any case it would be easier if you attach the compilable project for me to try it out.