/**
* @brief This function return last received data size
* @param None
* @retval None
*/
uint16_t USBH_CDC_GetLastReceivedDataSize(USBH_HandleTypeDef *phost)
{
CDC_HandleTypeDef *CDC_Handle = (CDC_HandleTypeDef*) phost->pActiveClass->pData;
if(phost->gState == HOST_CLASS)
{
return USBH_LL_GetLastXferSize(phost, CDC_Handle->DataItf.InPipe);;
}
else
{
return 0;
}
}
static void CDC_ProcessReception(USBH_HandleTypeDef *phost)
{
CDC_HandleTypeDef *CDC_Handle = (CDC_HandleTypeDef*) phost->pActiveClass->pData;
USBH_URBStateTypeDef URB_Status = USBH_URB_IDLE;
uint16_t length;
switch(CDC_Handle->data_rx_state)
{
case CDC_RECEIVE_DATA:
USBH_BulkReceiveData (phost,
CDC_Handle->pRxData,
CDC_Handle->DataItf.InEpSize,
CDC_Handle->DataItf.InPipe);
CDC_Handle->data_rx_state = CDC_RECEIVE_DATA_WAIT;
break;
case CDC_RECEIVE_DATA_WAIT:
URB_Status = USBH_LL_GetURBState(phost, CDC_Handle->DataItf.InPipe);
/*Check the status done for reception*/
if(URB_Status == USBH_URB_DONE )
{
length = USBH_LL_GetLastXferSize(phost, CDC_Handle->DataItf.InPipe);
if(((CDC_Handle->RxDataLength - length) > 0) && (length > CDC_Handle->DataItf.InEpSize))
{
CDC_Handle->RxDataLength -= length ;
CDC_Handle->pRxData += length;
CDC_Handle->data_rx_state = CDC_RECEIVE_DATA;
}
else
{
CDC_Handle->data_rx_state = CDC_IDLE;
USBH_CDC_ReceiveCallback(phost);
}
#if (USBH_USE_OS == 1)
osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
#endif
}
break;
default:
break;
}
}
static USBH_StatusTypeDef USBH_AOA_InHandle(USBH_HandleTypeDef *phost)
{
USBH_URBStateTypeDef URB_Status;
uint32_t size;
AOA_HandleTypeDef* aoa = phost->pActiveClass->pData;
switch (aoa->inState)
{
case AOA_RECV_DATA:
USBH_BulkReceiveData(phost, aoa->inbuff, USBH_AOA_DATA_SIZE,
aoa->hc_num_in);
aoa->inState = AOA_RECV_DATA_WAIT;
break;
case AOA_RECV_DATA_WAIT:
URB_Status = USBH_LL_GetURBState(phost, aoa->hc_num_in);
if (URB_Status == USBH_URB_DONE)
{
size = USBH_LL_GetLastXferSize(phost, aoa->hc_num_in);
if (size > 0) {
if (DebugConfig.print_aoa_recvdata)
{
if (printable(aoa->inbuff, size)) {
aoa->inbuff[size] = '\0';
USBH_UsrLog("AOA: in %u bytes, \"%s\"", (unsigned int)size, aoa->inbuff);
}
else {
USBH_UsrLog("AOA: in %u bytes, %s", (unsigned int)size, bytes2bin(aoa->inbuff, size));
}
}
if (aoa->recvCallback)
{
aoa->recvCallback(phost, aoa->inbuff, size);
}
aoa->inState = AOA_RECV_DATA;
}
}
break;
}
return USBH_OK;
}
static BOT_CSWStatusTypeDef USBH_MSC_DecodeCSW(USBH_HandleTypeDef *phost)
{
MSC_HandleTypeDef *MSC_Handle = (MSC_HandleTypeDef *) phost->pActiveClass->pData;
BOT_CSWStatusTypeDef status = BOT_CSW_CMD_FAILED;
/*Checking if the transfer length is different than 13*/
if(USBH_LL_GetLastXferSize(phost, MSC_Handle->InPipe) != BOT_CSW_LENGTH)
{
/*(4) Hi > Dn (Host expects to receive data from the device,
Device intends to transfer no data)
(5) Hi > Di (Host expects to receive data from the device,
Device intends to send data to the host)
(9) Ho > Dn (Host expects to send data to the device,
Device intends to transfer no data)
(11) Ho > Do (Host expects to send data to the device,
Device intends to receive data from the host)*/
status = BOT_CSW_PHASE_ERROR;
}
else
{ /* CSW length is Correct */
/* Check validity of the CSW Signature and CSWStatus */
if(MSC_Handle->hbot.csw.field.Signature == BOT_CSW_SIGNATURE)
{/* Check Condition 1. dCSWSignature is equal to 53425355h */
if(MSC_Handle->hbot.csw.field.Tag == MSC_Handle->hbot.cbw.field.Tag)
{
/* Check Condition 3. dCSWTag matches the dCBWTag from the
corresponding CBW */
if(MSC_Handle->hbot.csw.field.Status == 0)
{
/* Refer to USB Mass-Storage Class : BOT (www.usb.org)
Hn Host expects no data transfers
Hi Host expects to receive data from the device
Ho Host expects to send data to the device
Dn Device intends to transfer no data
Di Device intends to send data to the host
Do Device intends to receive data from the host
Section 6.7
(1) Hn = Dn (Host expects no data transfers,
Device intends to transfer no data)
(6) Hi = Di (Host expects to receive data from the device,
Device intends to send data to the host)
(12) Ho = Do (Host expects to send data to the device,
Device intends to receive data from the host)
*/
status = BOT_CSW_CMD_PASSED;
}
else if(MSC_Handle->hbot.csw.field.Status == 1)
{
status = BOT_CSW_CMD_FAILED;
}
else if(MSC_Handle->hbot.csw.field.Status == 2)
{
/* Refer to USB Mass-Storage Class : BOT (www.usb.org)
Section 6.7
(2) Hn < Di ( Host expects no data transfers,
Device intends to send data to the host)
(3) Hn < Do ( Host expects no data transfers,
Device intends to receive data from the host)
(7) Hi < Di ( Host expects to receive data from the device,
Device intends to send data to the host)
(8) Hi <> Do ( Host expects to receive data from the device,
Device intends to receive data from the host)
(10) Ho <> Di (Host expects to send data to the device,
Di Device intends to send data to the host)
(13) Ho < Do (Host expects to send data to the device,
Device intends to receive data from the host)
*/
status = BOT_CSW_PHASE_ERROR;
}
} /* CSW Tag Matching is Checked */
} /* CSW Signature Correct Checking */
else
{
/* If the CSW Signature is not valid, We sall return the Phase Error to
Upper Layers for Reset Recovery */
status = BOT_CSW_PHASE_ERROR;
}
} /* CSW Length Check*/
return status;
}
