void DFU_controlTransfer(CONTROL_TRANSFER *control)
{
// 0x20 is CLASS request
// 0x01 is INTERFACE target
// MSBit is transfer direction
if ((control->setup.bmRequestType & 0x7F) == 0x21)
{
switch(control->setup.bRequest)
{
case DFU_DETACH:
// shouldn't happen, we're already in DFU mode
break;
case DFU_DNLOAD:
DFU_Download(control);
break;
case DFU_UPLOAD:
DFU_Upload(control);
break;
case DFU_GETSTATUS:
DFU_GetStatus(control);
break;
case DFU_CLRSTATUS:
DFU_ClearStatus(control);
break;
case DFU_GETSTATE:
DFU_GetState(control);
break;
case DFU_ABORT:
DFU_Abort(control);
break;
}
}
}
/**
* @brief USBD_DFU_Setup
* Handle the DFU specific requests
* @param pdev: instance
* @param req: usb requests
* @retval status
*/
static uint8_t USBD_DFU_Setup (USBD_HandleTypeDef *pdev,
USBD_SetupReqTypedef *req)
{
uint8_t *pbuf = 0;
uint16_t len = 0;
uint8_t ret = USBD_OK;
USBD_DFU_HandleTypeDef *hdfu;
hdfu = pdev->pClassData;
switch (req->bmRequest & USB_REQ_TYPE_MASK)
{
case USB_REQ_TYPE_CLASS :
switch (req->bRequest)
{
case DFU_DNLOAD:
DFU_Download(pdev, req);
break;
case DFU_UPLOAD:
DFU_Upload(pdev, req);
break;
case DFU_GETSTATUS:
DFU_GetStatus(pdev);
break;
case DFU_CLRSTATUS:
DFU_ClearStatus(pdev);
break;
case DFU_GETSTATE:
DFU_GetState(pdev);
break;
case DFU_ABORT:
DFU_Abort(pdev);
break;
case DFU_DETACH:
DFU_Detach(pdev, req);
break;
default:
USBD_CtlError (pdev, req);
ret = USBD_FAIL;
}
break;
case USB_REQ_TYPE_STANDARD:
switch (req->bRequest)
{
case USB_REQ_GET_DESCRIPTOR:
if( (req->wValue >> 8) == DFU_DESCRIPTOR_TYPE)
{
pbuf = USBD_DFU_CfgDesc + (9 * (USBD_DFU_MAX_ITF_NUM + 1));
len = MIN(USB_DFU_DESC_SIZ , req->wLength);
}
USBD_CtlSendData (pdev,
pbuf,
len);
break;
case USB_REQ_GET_INTERFACE :
USBD_CtlSendData (pdev,
(uint8_t *)&hdfu->alt_setting,
1);
break;
case USB_REQ_SET_INTERFACE :
if ((uint8_t)(req->wValue) < USBD_DFU_MAX_ITF_NUM)
{
hdfu->alt_setting = (uint8_t)(req->wValue);
}
else
{
/* Call the error management function (command will be nacked */
USBD_CtlError (pdev, req);
ret = USBD_FAIL;
}
break;
default:
USBD_CtlError (pdev, req);
ret = USBD_FAIL;
}
}
return ret;
}
