how can i add the usb transfer funcation on the 52840 ?https://devzone.nordicsemi.com/f/nordic-q-a/64398/how-can-i-add-the-usb-transfer-funcation-on-the-52840Hi, i want to devolep a keyboard by nrf52840,now the problem is some funcation the usb examle have not,so i want to konw how can i add the 1.consumer control？ 2.system control？ 3.a private usb communication way with usb host that i need transferen-USTelligent Community 13Tue, 04 Aug 2020 10:04:51 GMTRE: how can i add the usb transfer funcation on the 52840 ?https://devzone.nordicsemi.com/thread/262946?ContentTypeID=1Tue, 04 Aug 2020 10:04:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9140d69b-10e5-43ac-a928-13f190b76deeovrebekk<p>Hi&nbsp;</p> <p>I will need to get some input from the USB developers how to add consumer control and system control usages to the existing example.&nbsp;</p> <p>Just by looking at the example it seems like you need to change the implementation of app_usbd_hid_kbd_desc.h, app_usbd_hid_kbd.h and app_usbd_hid_kbd.c files, but there might be an easier way.&nbsp;</p> <p>Regarding question 3, o you want to transfer the data over USB HID, or would it be possible to use a different USB class such as CDC or MSC?</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>