https://devzone.nordicsemi.com/f/nordic-q-a/91521/how-to-use-rtt-to-debug-nrf52833-in-zephyr-projectI&#39;m doing with the nRF Connect SDK v.19.1, testing the project C:\ncs\v1.9.1\zephyr\samples\hello_world. The main. c file is void main(void) { printk(&quot;Hello World! %s\n&quot;, CONFIG_BOARD); } To obtain the information from printk function, I added theen-USTelligent Community 13Thu, 01 Sep 2022 11:34:56 GMThttps://devzone.nordicsemi.com/thread/384315?ContentTypeID=1Thu, 01 Sep 2022 11:34:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:746569e5-3994-42d8-b555-ab9a165082a4Hieu<p><span>Glad to hear it. I have marked my previous reply as the answer then, I hope you don&#39;t mind. Reach out to us anytime if you have more questions&nbsp;:)</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/384211?ContentTypeID=1Wed, 31 Aug 2022 19:27:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7af10320-60b3-4aba-902a-b7d647254c59Zach Liu<p>Hi Hieu,</p> <p>Based on your information. The RTT viewer is working now. Thank you so much.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/384196?ContentTypeID=1Wed, 31 Aug 2022 15:59:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e8a7e000-db6a-4ecc-9b6f-354cde54b996Hieu<p>Hi, I was able to retarget <span style="font-family:&#39;courier new&#39;, courier;">printk()</span>&nbsp;to RTT with the following prj.conf setup:</p> <div> <div><span style="font-family:&#39;courier new&#39;, courier;">CONFIG_LOG=y</span></div> <div><span style="font-family:&#39;courier new&#39;, courier;">CONFIG_USE_SEGGER_RTT=y</span></div> <div><span style="font-family:&#39;courier new&#39;, courier;">CONFIG_RTT_CONSOLE=y</span></div> <div><span style="font-family:&#39;courier new&#39;, courier;">CONFIG_UART_CONSOLE=n</span></div> <div><span></span></div> <div><span>Could you please try on your end and see if it&nbsp;gets you the RTT output?</span></div> </div><div style="clear:both;"></div>