XUSB_EP_BUF0COUNT_OFFSET
udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, length);
udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, 0);
XUSB_EP_BUF0COUNT_OFFSET);
udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, 0);
udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, count);
udc->write_fn(udc->addr, ep0->offset + XUSB_EP_BUF0COUNT_OFFSET, 0);
udc->write_fn(udc->addr, ep->offset + XUSB_EP_BUF0COUNT_OFFSET,
XUSB_EP_BUF0COUNT_OFFSET, length);
XUSB_EP_BUF0COUNT_OFFSET, bufferlen);
bufoffset = XUSB_EP_BUF0COUNT_OFFSET;