https://devzone.nordicsemi.com/f/nordic-q-a/81476/nrf_log_info-and-printfI&#39;d like to both use printf and NRF_LOG in my application. However, I have not been able to get both working simultaneously. Is this possible? I init the logging like: ret_code_t err_code = NRF_LOG_INIT(NULL); APP_ERROR_CHECK(err_code); NRF_LOG_DEFAULT_BACKENDS_INITen-USTelligent Community 13Tue, 09 Nov 2021 07:22:51 GMThttps://devzone.nordicsemi.com/thread/338051?ContentTypeID=1Tue, 09 Nov 2021 07:22:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1baa13d4-8742-48e2-9447-d06103ae11deSusheel Nuguru<p>i would suggest you to use NRF_LOG even for everything to have a consistent behavior. Trying to access uart directly without NRF_LOG knowing might cause unpredictable behavior since NRF_LOG buffers the logs before flushing.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/337995?ContentTypeID=1Mon, 08 Nov 2021 16:18:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:14a13a10-4b5f-411e-9b5d-9d92c0ee7d89nrf_user<p>Thank you, that makes sense.</p> <p>Do you have any suggestions for how to nrf log to uart while also being able to write directly to uart?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/337835?ContentTypeID=1Mon, 08 Nov 2021 08:28:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:41d95160-7f64-418a-99b7-fea7ccd52194Susheel Nuguru<p>They do not seem to work together as printf uses retarget.c file which uses app_uart library and NRF_LOG uses its own usage of nrf_drv_uart directly. Could be a conflict in both usage if retarget and NRF_LOG are working on the same instance of the uart.</p><div style="clear:both;"></div>