https://devzone.nordicsemi.com/f/nordic-q-a/98962/debugging-became-impossible-after-increasing-the-bufferWe become indebted to. Currently, we are developing using nrf52840, and in order to simultaneously implement LED connection monitoring and battery voltage monitoring, we implemented it by preparing two buffers. When I debugged before, each voltage valueen-USTelligent Community 13Fri, 21 Apr 2023 13:09:01 GMThttps://devzone.nordicsemi.com/thread/421768?ContentTypeID=1Fri, 21 Apr 2023 13:09:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8c639352-59ee-401e-8df0-341c1e8625b9H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>If your firmware asserts early in the boot process, it can be hard for the debugger to successfully attach before the firmware itself&nbsp;asserts&nbsp;(default behavior is then to perform a soft-reset).</p> <p>If this occurs, you can try to recover your device:</p> <p><pre class="ui-code" data-mode="text">nrfjprog --recover</pre></p> <p>&nbsp;</p> <p>And also build your firmware with &quot;DEBUG&quot; preprocessor flag set.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/421626?ContentTypeID=1Fri, 21 Apr 2023 05:38:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:abfd5dc2-ff63-4983-897e-48d8bc89b0aeLemonCake<p><img style="max-height:289px;max-width:495px;" alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/990x578/__key/communityserver-discussions-components-files/4/light_5F00_switch_5F00_server_5F00_nrf52840_5F00_xxAA_5F00_s140_5F00_7.0.1-_2D00_-SEGGER-Embedded-Studio-for-ARM-V5.50a-_2800_64_2D00_bit_2900_-_2D00_-Non_2D00_Commercial-License-2023_5F00_04_5F00_21-14_5F00_25_5F00_29.png" /></p><div style="clear:both;"></div>