usbd_xfer_get_fps_shift
fps_shift = usbd_xfer_get_fps_shift(chan->xfer[0]);
uint8_t shift = usbd_xfer_get_fps_shift(xfer);
usbd_xfer_get_fps_shift(xfer);
shift = usbd_xfer_get_fps_shift(xfer);
usbd_xfer_get_fps_shift(xfer), xfer->max_packet_size,
switch (usbd_xfer_get_fps_shift(xfer)) {
uint8_t usbd_xfer_get_fps_shift(struct usb_xfer *xfer);