Symbol: UR_SET_PROTOCOL
sys/bus/u4b/gadget/g_keyboard.c
395
(req->bRequest == UR_SET_PROTOCOL) &&
sys/bus/u4b/gadget/g_mouse.c
444
(req->bRequest == UR_SET_PROTOCOL) &&
sys/bus/u4b/usb_request.c
1777
req.bRequest = UR_SET_PROTOCOL;