NRF9160 custom board RTT init failshttps://devzone.nordicsemi.com/f/nordic-q-a/113923/nrf9160-custom-board-rtt-init-failsHi, I cannot resolve the problem while setting up modem trace RTT logging. I&#39;m also unable to find up-to-date information on how to set this up. I have connected DK as SWD bridge to my custom board, I also have USB-UART available via FTDI chip ifen-USTelligent Community 13Fri, 23 Aug 2024 13:35:39 GMTRE: NRF9160 custom board RTT init failshttps://devzone.nordicsemi.com/thread/499588?ContentTypeID=1Fri, 23 Aug 2024 13:35:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:608ab425-91e3-4f25-a7d0-7456b2b58a9elumdeveloper<p>I got this sorted out but unfortunately, I don&#39;t remember my solution any more so this ticket is useless now.</p><div style="clear:both;"></div>RE: NRF9160 custom board RTT init failshttps://devzone.nordicsemi.com/thread/498229?ContentTypeID=1Wed, 14 Aug 2024 09:58:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:df70d689-c9e4-4645-881e-86d8a3512b70&#216;yvind<p>Hello,&nbsp;</p> [quote user=""]<p>I cannot resolve the problem while setting up modem trace RTT logging. I&#39;m also unable to find up-to-date information on how to set this up.</p> <p></p>[/quote] <p>The documentation for the <a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/libraries/modem/nrf_modem_lib/nrf_modem_lib_trace.html">modem trace module can be found here</a>.&nbsp;</p> [quote user=""]My RTT init fails to this:[/quote] <div> <div><span>#define</span><span> </span><span>NRF_ENOSYS</span><span> </span><span>88</span><span> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /**&lt; Functionality not supported */</span></div> <div> <div> <div><span>#define</span><span> </span><span>NRF_EFAULT</span><span> </span><span>14</span><span> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /**&lt; Bad address */</span></div> <div><span></span></div> <div><span>What else do you have enabled in your project?&nbsp;</span></div> <div><span></span></div> <div><span>Looking at e.g.&nbsp;nrf\tests\lib\nrf_modem_lib\trace_backends\rtt\prj.conf it has the following configuration</span></div> <div><span><pre class="ui-code" data-mode="text">CONFIG_USE_SEGGER_RTT=y CONFIG_NRF_MODEM_LIB_TRACE=y CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT=y</pre></span></div> <div><span></span></div> <div><span>Kind regards,<br />Øyvind</span></div> <div><span></span></div> </div> </div> </div><div style="clear:both;"></div>