/**
* Reads incoming data on an USB endpoint This methods sets the transfer
* descriptor and activate the endpoint interrupt. The actual transfer is
* then carried out by the endpoint interrupt handler. The Read operation
* finishes either when the buffer is full, or a short packet (inferior to
* endpoint maximum size) is received.
*
* *The buffer must be kept allocated until the transfer is finished*.
* \param bEndpoint Endpoint number.
* \param pData Pointer to a data buffer.
* \param dLength Size of the data buffer in bytes.
* \param fCallback Optional end-of-transfer callback function.
* \param pArgument Optional argument to the callback function.
* \return USBD_STATUS_SUCCESS if the read operation has been started;
* otherwise, the corresponding error code.
*/
uint8_t USBD_Read(uint8_t bEndpoint,
void *pData,
uint32_t dLength,
TransferCallback fCallback,
void *pArgument)
{
USBD_HAL_SetTransferCallback(bEndpoint, fCallback, pArgument);
return USBD_HAL_Read(bEndpoint, pData, dLength);
}
/**
* Reads incoming data on an USB endpoint This methods sets the transfer
* descriptor and activate the endpoint interrupt. The actual transfer is
* then carried out by the endpoint interrupt handler. The Read operation
* finishes either when the buffer is full, or a short packet (inferior to
* endpoint maximum size) is received.
*
* *The buffer must be kept allocated until the transfer is finished*.
* \param bEndpoint Endpoint number.
* \param pData Pointer to a data buffer.
* \param dLength Size of the data buffer in bytes.
* \param fCallback Optional end-of-transfer callback function.
* \param pArgument Optional argument to the callback function.
* \return USBD_STATUS_SUCCESS if the read operation has been started;
* otherwise, the corresponding error code.
*/
uint8_t USBD_Read(uint8_t bEndpoint,
void *pData,
uint32_t dLength,
TransferCallback fCallback,
void *pArgument)
{
//USBD_HAL_SetTransferCallback(bEndpoint, fCallback, pArgument);
if(USBD_HAL_SetTransferCallback(bEndpoint, fCallback, pArgument) == USBD_STATUS_LOCKED) {
return USBD_STATUS_LOCKED;
}
return USBD_HAL_Read(bEndpoint, pData, dLength);
}
