AR_PIPE_RX_INTR
AR_PIPE_TX_INTR, AR_PIPE_RX_INTR, &usc->usc_ep_ctrl);
ed = usbd_get_endpoint_descriptor(usc->usc_iface, AR_PIPE_RX_INTR);
error = usbd_open_pipe_intr(usc->usc_iface, AR_PIPE_RX_INTR,