https://devzone.nordicsemi.com/f/nordic-q-a/76583/usb-data-detectionHello, My device is a USB HID peripheral connected to a PC. There is a case when the PC is turned off, but USB power is present. I want to detect this situation. At the moment I use APP_USBD_EVT_DRV_SOF event as an indicator that the data line isen-USTelligent Community 13Mon, 21 Jun 2021 14:55:03 GMThttps://devzone.nordicsemi.com/thread/316314?ContentTypeID=1Mon, 21 Jun 2021 14:55:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3d6e2c70-b5bb-4877-9e0b-f21192ba45bbilia<p>Thanks, I&#39;ll use it. Somehow I didn&#39;t find it previously.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/316304?ContentTypeID=1Mon, 21 Jun 2021 14:19:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:494ebbb5-0e46-479a-adee-af817bc539dcDmitry<p>Hi,</p> <p>SOF event should be a quite reliable way, no SOF for 2 seconds means port is in suspended state... There is also&nbsp;<span>app_usbd_core_state_get() method, see <a href="https://devzone.nordicsemi.com/f/nordic-q-a/68597/about-identifying-the-usb-device-plugged-into-the-pc-or-power-bank-or-adapter/281090#281090">this</a> discussion.</span></p><div style="clear:both;"></div>