https://devzone.nordicsemi.com/f/nordic-q-a/30762/nrf52840-usb-host-out-ackingHi All! I use Example Project from SDK: &quot;examples\peripheral\usbd\&quot; as reference to implement my HID device simple protocol (EP1IN / EP1OUT 64bytes) The Question is how to sent ACK/NACK/STALL for USB protocol OUT stage after I receive &quot;NRF_DRV_USBD_EVT_EPTRANSFERen-USTelligent Community 13Sat, 23 Jun 2018 06:45:00 GMThttps://devzone.nordicsemi.com/thread/137294?ContentTypeID=1Sat, 23 Jun 2018 06:45:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:daf85511-596b-41c5-9c51-1696e7d5d78aatong<p>hello,can i get your&nbsp;<span>source of Project include PC app?I use the sdk15.0,the divice enter suspend &nbsp;can not wake up.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/121712?ContentTypeID=1Thu, 22 Feb 2018 15:47:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:68f215c5-b8fe-4560-847a-58cb020e5ca8Aylik<p>I solved it&nbsp; here</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/30738/nrf52840-usb-epout-data-buffer">https://devzone.nordicsemi.com/f/nordic-q-a/30738/nrf52840-usb-epout-data-buffer</a></p> <p>if any question, I cand send all source of Project include PC app.</p><div style="clear:both;"></div>