gscan_frame
struct gscan_frame *sc_tx_frame;
struct gscan_frame *sc_rx_frame;
struct gscan_frame *gsframe;
if (len < sizeof(struct gscan_frame) - 8) {
sizeof(struct gscan_frame), USBD_SHORT_XFER_OK,
memset(sc->sc_tx_frame, 0, sizeof(struct gscan_frame));
sizeof(struct gscan_frame), 0, 10000, gscan_tx);
if ((err = usbd_create_xfer(sc->sc_rx_pipe, sizeof(struct gscan_frame),
if ((err = usbd_create_xfer(sc->sc_tx_pipe, sizeof(struct gscan_frame),