https://devzone.nordicsemi.com/f/nordic-q-a/120053/printk-printf-over-rttHello, I’m using the GNSS sample (located at C:\ncs\v2.9.0\nrf\samples\cellular\gnss ) to evaluate the GNSS module on our custom PCB, and I need to view its output over RTT. I added an overlay file to enable AGPS data downloads from the cloud and toen-USTelligent Community 13Sun, 23 Mar 2025 14:26:48 GMThttps://devzone.nordicsemi.com/thread/528509?ContentTypeID=1Sun, 23 Mar 2025 14:26:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4cd8383e-528b-414e-bbaa-27b1c1ca7b78Roman Veselskyi<p>Hello,<br /><br />Thanks for the feedback. The issue was resolved, and everything was actually working from the start. The problem was how I tried to retrieve the data. For some reason, the data did not appear in the &quot;Terminal 0&quot; tab of the J-Link RTT Viewer. All I needed to do was check the &quot;All Terminals&quot; tab to see the data. &nbsp;<br /><br /><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1742739951635v1.png" alt=" " /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/528505?ContentTypeID=1Sun, 23 Mar 2025 13:45:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f07d16e5-0718-4ee6-9b40-74797a5eb8a9&#216;yvind<p>Hello,&nbsp;</p> <p>Did you try with e.g. CONFIG FORCE RTT PRINTK or&nbsp;<span>CONFIG_LOG_PRINTK?</span> This is documented under <a href="https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/nrf/test_and_optimize/logging.html#rtt">Logging in nRC Connect SDK and RTT</a>&nbsp;and zephyr/subsys/logging/backends/Kconfig.rtt.</p> <p>More information can be found under <a href="https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/zephyr/services/logging/index.html#logging-api">Logging in Zephyr OS</a>.<br /><br />Kind regards,<br />Øyvind</p><div style="clear:both;"></div>