NRF_LOG_DEFERRED

[uriy]

I have troubles with logs over uart. I'm debuging dfu bootloader secure with SDK 12.2. BLE is used for DFU transport. I set NRF_LOG_DEFERRED 1 as in my another application where logs works fine, and copy rest of defines related to uart and logs from sdk_config.h. I spent lot of time to find where is problem, I debug step by step. I see that uart interrupt is enabled, gpio for uart tx is correct. But uart was silent and understanding source code is very difficult to find problem. Than I try NRF_LOG_DEFERRED 0 and I see logs. What is reason of this problem? I think it's better to use NRF_LOG_DEFERRED 1. I my opinion 1 means fifo using and uart interrupts, and 0 means polling mode. Polling mode is slow and can have affect in some cases.

[Jørgen Holmefjord]

Did you call NRF_LOG_FLUSH() or NRF_LOG_PROCESS() in your main function? When using deferred mode in the logging module, the logged data is put into a buffer. This buffer is not processed untill you call one of the above functions.

[uriy]

You are right! I nothing know about this functions before. At this it's difficult to find where to put these calls in DFU bootloader source code. I hope I'll find it.