https://devzone.nordicsemi.com/f/nordic-q-a/110394/is-there-a-limit-to-how-many-lines-printk-supportsI am using nrfconnectsdk v2.4.0 with zephyr and I have a program with a large number of printk() statements. is there anything in prj.conf that limits the amount of text I can print out to RTT i use jlink to view the RTT output. i have a customen-USTelligent Community 13Mon, 22 Apr 2024 07:41:12 GMThttps://devzone.nordicsemi.com/thread/479868?ContentTypeID=1Mon, 22 Apr 2024 07:41:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:354b5693-a657-48da-85d7-268d4b4d2a19weightwatcherphil<p>thanks .&nbsp; i made mine&nbsp;</p> <p></p> <p>CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=1228</p> <p></p> <p>I also changed the code to</p> <p></p> <div> <div><span>printk</span><span>(</span><span>&quot;calling system off in one second</span><span>\n</span><span>&quot;</span><span>);</span></div> <div><span>&nbsp; &nbsp; </span><span>k_sleep</span><span>(</span><span>K_MSEC</span><span>(</span><span>1000</span><span>));</span></div> <br /> <div><span>&nbsp; &nbsp; </span><span>//nrf goes to system off </span></div> <div><span>&nbsp; &nbsp; </span><span>nrf_regulators_system_off</span><span>(</span><span>NRF_REGULATORS</span><span>);</span></div> <div><span></span></div> <div><span></span></div> <div><span></span></div> <div><span>and i can see all of my printk() now.</span></div> </div> <p></p> <p>thanks</p> <p>you may close this ticket</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/479850?ContentTypeID=1Mon, 22 Apr 2024 05:51:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a5f7ff2-4ee9-470a-b119-9fecb7bd1da3Simonr<p>Hi</p> <p>Check out&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/index.html#CONFIG_SEGGER_RTT_BUFFER_SIZE_UP">CONFIG_SEGGER_RTT_BUFFER_SIZE_UP</a>.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/479787?ContentTypeID=1Fri, 19 Apr 2024 21:21:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee88fd1a-29dc-44c7-b97a-33f820bbc439weightwatcherphil<p>what controls the size of the RTT buffers in prj.conf ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/479655?ContentTypeID=1Fri, 19 Apr 2024 09:48:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b0324b6c-c495-472e-9088-ff6299195eeaTurbo J<p>RTT silently drops messages if the RTT buffers are full - especially on startup. One ms is not enough time to clear this buffer via USB.</p><div style="clear:both;"></div>