https://devzone.nordicsemi.com/f/nordic-q-a/59759/clear-example-using-segger-rtt-on-zephyr-with-ses-and-nrf5340-pdkNordic boards come with the awesome JLINK-OB, and I&#39;d love to use Segger RTT for app tracing, but have been not been able to get it working in Zephyr using the nRF5340-PDK. I looked around DevZone and tried some suggestions targeted to the nRF9160, buten-USTelligent Community 13Thu, 02 Apr 2020 10:34:21 GMThttps://devzone.nordicsemi.com/thread/243148?ContentTypeID=1Thu, 02 Apr 2020 10:34:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6587ab6-679c-4e58-bcf1-c53b1643b840Susheel Nuguru<p>I do not have any example to show you this. But it must be very straightforward. Just use the API shown <a href="https://docs.zephyrproject.org/latest/reference/logging/index.html">here</a>&nbsp;and set the backend to RTT as my initial reply.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/243147?ContentTypeID=1Thu, 02 Apr 2020 10:30:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e3de934c-30a0-4e14-8fc2-0a0f078868b4Susheel Nuguru<p>On some experimental project I was doing, I was using the below configuration in my proj.conf and it worked quite fine with the segger logs</p> <p><pre class="ui-code" data-mode="text">CONFIG_USE_SEGGER_RTT=y CONFIG_SEGGER_RTT_MAX_NUM_UP_BUFFERS=3 CONFIG_SEGGER_RTT_MAX_NUM_DOWN_BUFFERS=3 CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=28000 CONFIG_SEGGER_RTT_BUFFER_SIZE_DOWN=16 CONFIG_SEGGER_RTT_PRINTF_BUFFER_SIZE=14000 CONFIG_SEGGER_RTT_MODE_NO_BLOCK_SKIP=y CONFIG_SEGGER_RTT_MODE=0 </pre></p> <p>You might also take a look at <a href="https://devzone.nordicsemi.com/f/nordic-q-a/46083/how-to-setup-zephyr-for-rtt-logging-with-nrf9160">this</a> thread to see how to stop uart from flushing to the console. The logging mechanism is the same for any variant in Zephyr.</p><div style="clear:both;"></div>