/**
* @brief Receives an amount of data (Control Flow) in blocking mode.
* @param hspdif: pointer to a SPDIFRX_HandleTypeDef structure that contains
* the configuration information for SPDIFRX module.
* @param pData: Pointer to data buffer
* @param Size: Amount of data to be received
* @param Timeout: Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size, uint32_t Timeout)
{
uint32_t tickstart = 0U;
if((pData == NULL ) || (Size == 0U))
{
return HAL_ERROR;
}
if(hspdif->State == HAL_SPDIFRX_STATE_READY)
{
/* Process Locked */
__HAL_LOCK(hspdif);
hspdif->State = HAL_SPDIFRX_STATE_BUSY;
/* Start synchronization */
__HAL_SPDIFRX_SYNC(hspdif);
/* Get tick */
tickstart = HAL_GetTick();
/* Wait until SYNCD flag is set */
if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, Timeout, tickstart) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Start reception */
__HAL_SPDIFRX_RCV(hspdif);
/* Receive control flow */
while(Size > 0U)
{
/* Get tick */
tickstart = HAL_GetTick();
/* Wait until CSRNE flag is set */
if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_CSRNE, RESET, Timeout, tickstart) != HAL_OK)
{
return HAL_TIMEOUT;
}
(*pData++) = hspdif->Instance->CSR;
Size--;
}
/* SPDIFRX ready */
hspdif->State = HAL_SPDIFRX_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hspdif);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data (Data Flow) mode with DMA
* @param hspdif: SPDIFRX handle
* @param pData: a 32-bit pointer to the Receive data buffer.
* @param Size: number of data sample to be received :
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow_DMA(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
if((pData == NULL) || (Size == 0))
{
return HAL_ERROR;
}
if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_CX))
{
hspdif->pRxBuffPtr = pData;
hspdif->RxXferSize = Size;
hspdif->RxXferCount = Size;
/* Process Locked */
__HAL_LOCK(hspdif);
hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
hspdif->State = HAL_SPDIFRX_STATE_BUSY_RX;
/* Set the SPDIFRX Rx DMA Half transfer complete callback */
hspdif->hdmaDrRx->XferHalfCpltCallback = SPDIFRX_DMARxHalfCplt;
/* Set the SPDIFRX Rx DMA transfer complete callback */
hspdif->hdmaDrRx->XferCpltCallback = SPDIFRX_DMARxCplt;
/* Set the DMA error callback */
hspdif->hdmaDrRx->XferErrorCallback = SPDIFRX_DMAError;
/* Enable the DMA request */
HAL_DMA_Start_IT(hspdif->hdmaDrRx, (uint32_t)&hspdif->Instance->DR, (uint32_t)hspdif->pRxBuffPtr, Size);
/* Enable RXDMAEN bit in SPDIFRX CR register for data flow reception*/
hspdif->Instance->CR |= SPDIFRX_CR_RXDMAEN;
if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00)
{
/* Start synchronization */
__HAL_SPDIFRX_SYNC(hspdif);
/* Wait until SYNCD flag is set */
if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Start reception */
__HAL_SPDIFRX_RCV(hspdif);
}
/* Process Unlocked */
__HAL_UNLOCK(hspdif);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data (Control Flow) with Interrupt
* @param hspdif: SPDIFRX handle
* @param pData: a 32-bit pointer to the Receive data buffer.
* @param Size: number of data sample (Control Flow) to be received :
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_RX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hspdif);
hspdif->pCsBuffPtr = pData;
hspdif->CsXferSize = Size;
hspdif->CsXferCount = Size;
hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
/* Check if a receive process is ongoing or not */
hspdif->State = HAL_SPDIFRX_STATE_BUSY_CX;
/* Enable the SPDIFRX PE Error Interrupt */
__HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_PERRIE);
/* Enable the SPDIFRX OVR Error Interrupt */
__HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_OVRIE);
/* Process Unlocked */
__HAL_UNLOCK(hspdif);
/* Enable the SPDIFRX CSRNE interrupt */
__HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00)
{
/* Start synchronization */
__HAL_SPDIFRX_SYNC(hspdif);
/* Wait until SYNCD flag is set */
if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Start reception */
__HAL_SPDIFRX_RCV(hspdif);
}
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}