/**
* @brief MSC_BOT_DataOut
* Proccess MSC OUT data
* @param pdev: device instance
* @param epnum: endpoint index
* @retval None
*/
void MSC_BOT_DataOut (USBD_HandleTypeDef *pdev,
uint8_t epnum)
{
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
switch (hmsc->bot_state)
{
case USBD_BOT_IDLE:
MSC_BOT_CBW_Decode(pdev);
break;
case USBD_BOT_DATA_OUT:
if(SCSI_ProcessCmd(pdev,
hmsc->cbw.bLUN,
&hmsc->cbw.CB[0]) < 0)
{
MSC_BOT_SendCSW (pdev, USBD_CSW_CMD_FAILED);
}
break;
default:
break;
}
}
/**
* @brief MSC_BOT_DataIn
* Handle BOT IN data stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval None
*/
void MSC_BOT_DataIn (USBD_HandleTypeDef *pdev,
uint8_t epnum)
{
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
switch (hmsc->bot_state)
{
case USBD_BOT_DATA_IN:
if(SCSI_ProcessCmd(pdev,
hmsc->cbw.bLUN,
&hmsc->cbw.CB[0]) < 0)
{
MSC_BOT_SendCSW (pdev, USBD_CSW_CMD_FAILED);
}
break;
case USBD_BOT_SEND_DATA:
case USBD_BOT_LAST_DATA_IN:
MSC_BOT_SendCSW (pdev, USBD_CSW_CMD_PASSED);
break;
default:
break;
}
}
/**
* @brief MSC_BOT_CBW_Decode
* Decode the CBW command and set the BOT state machine accordingtly
* @param pdev: device instance
* @retval None
*/
static void MSC_BOT_CBW_Decode (USBD_HandleTypeDef *pdev)
{
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
hmsc->csw.dTag = hmsc->cbw.dTag;
hmsc->csw.dDataResidue = hmsc->cbw.dDataLength;
if ((USBD_LL_GetRxDataSize (pdev ,MSC_EPOUT_ADDR) != USBD_BOT_CBW_LENGTH) ||
(hmsc->cbw.dSignature != USBD_BOT_CBW_SIGNATURE)||
(hmsc->cbw.bLUN > 1) ||
(hmsc->cbw.bCBLength < 1) ||
(hmsc->cbw.bCBLength > 16))
{
SCSI_SenseCode(pdev,
hmsc->cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
hmsc->bot_status = USBD_BOT_STATUS_ERROR;
MSC_BOT_Abort(pdev);
}
else
{
if(SCSI_ProcessCmd(pdev,
hmsc->cbw.bLUN,
&hmsc->cbw.CB[0]) < 0)
{
if(hmsc->bot_state == USBD_BOT_NO_DATA)
{
MSC_BOT_SendCSW (pdev,
USBD_CSW_CMD_FAILED);
}
else
{
MSC_BOT_Abort(pdev);
}
}
/*Burst xfer handled internally*/
else if ((hmsc->bot_state != USBD_BOT_DATA_IN) &&
(hmsc->bot_state != USBD_BOT_DATA_OUT) &&
(hmsc->bot_state != USBD_BOT_LAST_DATA_IN))
{
if (hmsc->bot_data_length > 0)
{
MSC_BOT_SendData(pdev,
hmsc->bot_data,
hmsc->bot_data_length);
}
else if (hmsc->bot_data_length == 0)
{
MSC_BOT_SendCSW (pdev,
USBD_CSW_CMD_PASSED);
}
}
}
}
/**
* @brief MSC_BOT_CBW_Decode
* Decode the CBW command and set the BOT state machine accordingtly
* @param pdev: device instance
* @retval None
*/
static void MSC_BOT_CBW_Decode (USB_OTG_CORE_HANDLE *pdev)
{
MSC_BOT_csw.dTag = MSC_BOT_cbw.dTag;
MSC_BOT_csw.dDataResidue = MSC_BOT_cbw.dDataLength;
if ((USBD_GetRxCount (pdev ,MSC_OUT_EP) != BOT_CBW_LENGTH) ||
(MSC_BOT_cbw.dSignature != BOT_CBW_SIGNATURE)||
(MSC_BOT_cbw.bLUN > 1) ||
(MSC_BOT_cbw.bCBLength < 1) ||
(MSC_BOT_cbw.bCBLength > 16))
{
SCSI_SenseCode(MSC_BOT_cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
MSC_BOT_Status = BOT_STATE_ERROR;
MSC_BOT_Abort(pdev);
}
else
{
if(SCSI_ProcessCmd(pdev,
MSC_BOT_cbw.bLUN,
&MSC_BOT_cbw.CB[0]) < 0)
{
MSC_BOT_Abort(pdev);
}
/*Burst xfer handled internally*/
else if ((MSC_BOT_State != BOT_DATA_IN) &&
(MSC_BOT_State != BOT_DATA_OUT) &&
(MSC_BOT_State != BOT_LAST_DATA_IN))
{
if (MSC_BOT_DataLen > 0)
{
MSC_BOT_SendData(pdev,
MSC_BOT_Data,
MSC_BOT_DataLen);
}
else if (MSC_BOT_DataLen == 0)
{
MSC_BOT_SendCSW (pdev,
CSW_CMD_PASSED);
}
}
}
}
/**
* @brief MSC_BOT_DataOut
* Proccess MSC OUT data
* @param pdev: device instance
* @param epnum: endpoint index
* @retval None
*/
void MSC_BOT_DataOut (USB_OTG_CORE_HANDLE *pdev,
uint8_t epnum) {
#ifdef SDIO_DMA
switch (MSC_BOT_State) {
case BOT_IDLE:
MSC_BOT_CBW_Decode(pdev);
break;
case BOT_DATA_OUT:
if(SCSI_ProcessCmd(pdev,
MSC_BOT_cbw.bLUN,
&MSC_BOT_cbw.CB[0]) < 0) {
MSC_BOT_SendCSW (pdev, CSW_CMD_FAILED);
}
break;
default:
break;
}
#endif
}
/**
* @brief MSC_BOT_DataIn
* Handle BOT IN data stage
* @param pdev: device instance
* @param epnum: endpoint index
* @retval None
*/
void MSC_BOT_DataIn (USB_OTG_CORE_HANDLE *pdev,
uint8_t epnum)
{
switch (MSC_BOT_State) {
case BOT_DATA_IN:
if(SCSI_ProcessCmd(pdev,
MSC_BOT_cbw.bLUN,
&MSC_BOT_cbw.CB[0]) < 0) {
MSC_BOT_SendCSW (pdev, CSW_CMD_FAILED);
}
break;
case BOT_SEND_DATA:
case BOT_LAST_DATA_IN:
MSC_BOT_SendCSW (pdev, CSW_CMD_PASSED);
break;
default:
break;
}
}