https://devzone.nordicsemi.com/f/nordic-q-a/119412/capturing-loggingHi there, I want to capture all the logs made by Zephyr and printk() calls. I want to forward these logs via USB using our custom application protocol for debugging purposes. I first looked into using the dummy shell backend, but I don&#39;t think iten-USTelligent Community 13Fri, 28 Feb 2025 14:41:23 GMThttps://devzone.nordicsemi.com/thread/525311?ContentTypeID=1Fri, 28 Feb 2025 14:41:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:567ca979-a8b9-47cc-8e91-f1fe6b6cc808Susheel Nuguru<p>Sorry, we do not have documentation for that.&nbsp;<br />You most likely need to enable&nbsp;CONFIG_LOG_BACKEND_CUSTOM and&nbsp;CONFIG_USB_DEVICE_STACK but we never played with this, so we cannot give you any recommendations.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/525276?ContentTypeID=1Fri, 28 Feb 2025 12:59:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:33d18863-ba5b-4978-a418-8cf06ec68453mlac<p>I do not want to use a Zephyr-provided USB logging backend as it&#39;d interfere with our custom USB stack and protocol. I need a custom solution.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/525273?ContentTypeID=1Fri, 28 Feb 2025 12:40:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b41e113-fd9b-4077-8a6e-d7111cbc5021Susheel Nuguru<p>I think you can use USB CDC ACM as backend in our solution (I never used it myself) but these configs in prj.conf should help</p> <p><pre class="ui-code" data-mode="text">CONFIG_LOG_PRINTK=y CONFIG_USB_DEVICE_STACK=y CONFIG_USB_DEVICE_PRODUCT=&quot;Zephyr USB Log&quot; CONFIG_USB_CDC_ACM=y CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=y CONFIG_LOG_BACKEND_USB=y</pre></p><div style="clear:both;"></div>