https://devzone.nordicsemi.com/f/nordic-q-a/90721/zephyr-with-j-scope-when-use-swd-rtt-mode-always-get-failed-to-start-rtt-samplingHi，everyone： I tried HSS mode, but it can&#39;t meet my needs. When I use RTT mode, the configuration is as follows test code: RTT viewer: but, J-scope has been reporting the following errorsen-USTelligent Community 13Mon, 08 Aug 2022 11:45:40 GMThttps://devzone.nordicsemi.com/thread/380590?ContentTypeID=1Mon, 08 Aug 2022 11:45:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fee21141-3ce3-4867-ad67-ae3644bf2559Einar Thorsrud<p>Hi,</p> <p>I suggest you <a href="https://forum.segger.com/">ask Segger</a> about this.</p><div style="clear:both;"></div>