a problem about USB host code

只看该作者 · 2012-1-6 09:57

USBH_Status USBH_InterruptSendData( USB_OTG_CORE_HANDLE *pdev,
                              uint8_t *buff,
                              uint8_t length,
                              uint8_t hc_num)
{
  pdev->host.hc[hc_num].ep_is_in = 0;
  pdev->host.hc[hc_num].xfer_buff = buff;
  pdev->host.hc[hc_num].xfer_len = length;

  if(pdev->host.hc[hc_num].toggle_in == 0)
  {
pdev->host.hc[hc_num].data_pid = HC_PID_DATA0;
  }
  else
  {
pdev->host.hc[hc_num].data_pid = HC_PID_DATA1;
  }
  pdev->host.hc[hc_num].toggle_in ^= 1;

  HCD_SubmitRequest (pdev , hc_num);

  return USBH_OK;
}

上面這個toggle_in應該是toggle_out吧，因為是Interrupt Send