stm32f7xx_hal_spdifrx.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

#ifdef HAL_SPDIFRX_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define SPDIFRX_TIMEOUT_VALUE  0xFFFF

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void  SPDIFRX_DMARxCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMACxCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMACxHalfCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMAError(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif);
static void  SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif);
static HAL_StatusTypeDef  SPDIFRX_WaitOnFlagUntilTimeout(SPDIFRX_HandleTypeDef *hspdif, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t tickstart);
/* Exported functions ---------------------------------------------------------*/

HAL_StatusTypeDef HAL_SPDIFRX_Init(SPDIFRX_HandleTypeDef *hspdif)
{
  uint32_t tmpreg = 0;
  
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the SPDIFRX parameters */
  assert_param(IS_STEREO_MODE(hspdif->Init.StereoMode));
  assert_param(IS_SPDIFRX_INPUT_SELECT(hspdif->Init.InputSelection));
  assert_param(IS_SPDIFRX_MAX_RETRIES(hspdif->Init.Retries));
  assert_param(IS_SPDIFRX_WAIT_FOR_ACTIVITY(hspdif->Init.WaitForActivity));
  assert_param(IS_SPDIFRX_CHANNEL(hspdif->Init.ChannelSelection));
  assert_param(IS_SPDIFRX_DATA_FORMAT(hspdif->Init.DataFormat));
  assert_param(IS_PREAMBLE_TYPE_MASK(hspdif->Init.PreambleTypeMask));
  assert_param(IS_CHANNEL_STATUS_MASK(hspdif->Init.ChannelStatusMask));
  assert_param(IS_VALIDITY_MASK(hspdif->Init.ValidityBitMask));
  assert_param(IS_PARITY_ERROR_MASK(hspdif->Init.ParityErrorMask));
  
  if(hspdif->State == HAL_SPDIFRX_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hspdif->Lock = HAL_UNLOCKED;
    /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
    HAL_SPDIFRX_MspInit(hspdif);
  }
  
  /* SPDIFRX peripheral state is BUSY*/
  hspdif->State = HAL_SPDIFRX_STATE_BUSY;  
  
  /* Disable SPDIFRX interface (IDLE State) */
  __HAL_SPDIFRX_IDLE(hspdif);
  
  /* Reset the old SPDIFRX CR configuration */
  tmpreg = hspdif->Instance->CR;
  
  tmpreg &= ~((uint16_t) SPDIFRX_CR_RXSTEO  | SPDIFRX_CR_DRFMT  | SPDIFRX_CR_PMSK |
              SPDIFRX_CR_VMSK | SPDIFRX_CR_CUMSK | SPDIFRX_CR_PTMSK  |
              SPDIFRX_CR_CHSEL | SPDIFRX_CR_NBTR | SPDIFRX_CR_WFA | SPDIFRX_CR_INSEL); 
  
  /* Sets the new configuration of the SPDIFRX peripheral */
  tmpreg |= ((uint16_t) hspdif->Init.StereoMode |
             hspdif->Init.InputSelection |
             hspdif->Init.Retries |
             hspdif->Init.WaitForActivity |
             hspdif->Init.ChannelSelection |
             hspdif->Init.DataFormat |
             hspdif->Init.PreambleTypeMask |
             hspdif->Init.ChannelStatusMask |
             hspdif->Init.ValidityBitMask |
             hspdif->Init.ParityErrorMask);
  
  hspdif->Instance->CR = tmpreg;  
  
  hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
  
  /* SPDIFRX peripheral state is READY*/
  hspdif->State = HAL_SPDIFRX_STATE_READY;
  
  return HAL_OK;
}

HAL_StatusTypeDef HAL_SPDIFRX_DeInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_SPDIFRX_ALL_INSTANCE(hspdif->Instance));
  
  hspdif->State = HAL_SPDIFRX_STATE_BUSY;
  
  /* Disable SPDIFRX interface (IDLE state) */
  __HAL_SPDIFRX_IDLE(hspdif);
  
  /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */
  HAL_SPDIFRX_MspDeInit(hspdif);
  
  hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
  
  /* SPDIFRX peripheral state is RESET*/
  hspdif->State = HAL_SPDIFRX_STATE_RESET;
  
  /* Release Lock */
  __HAL_UNLOCK(hspdif);
  
  return HAL_OK;
}

__weak void HAL_SPDIFRX_MspInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_MspInit could be implemented in the user file
  */ 
}

__weak void HAL_SPDIFRX_MspDeInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_MspDeInit could be implemented in the user file
  */ 
}

HAL_StatusTypeDef HAL_SPDIFRX_SetDataFormat(SPDIFRX_HandleTypeDef *hspdif, SPDIFRX_SetDataFormatTypeDef  sDataFormat)
{
  uint32_t tmpreg = 0;
  
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the SPDIFRX parameters */
  assert_param(IS_STEREO_MODE(sDataFormat.StereoMode));
  assert_param(IS_SPDIFRX_DATA_FORMAT(sDataFormat.DataFormat));
  assert_param(IS_PREAMBLE_TYPE_MASK(sDataFormat.PreambleTypeMask));
  assert_param(IS_CHANNEL_STATUS_MASK(sDataFormat.ChannelStatusMask));
  assert_param(IS_VALIDITY_MASK(sDataFormat.ValidityBitMask));
  assert_param(IS_PARITY_ERROR_MASK(sDataFormat.ParityErrorMask));
  
  /* Reset the old SPDIFRX CR configuration */
  tmpreg = hspdif->Instance->CR;
  
  if(((tmpreg & SPDIFRX_STATE_RCV) == SPDIFRX_STATE_RCV) &&
     (((tmpreg & SPDIFRX_CR_DRFMT) != sDataFormat.DataFormat) ||
      ((tmpreg & SPDIFRX_CR_RXSTEO) != sDataFormat.StereoMode)))  
  {
    return HAL_ERROR;    
  }  
  
  tmpreg &= ~((uint16_t) SPDIFRX_CR_RXSTEO  | SPDIFRX_CR_DRFMT  | SPDIFRX_CR_PMSK |
              SPDIFRX_CR_VMSK | SPDIFRX_CR_CUMSK | SPDIFRX_CR_PTMSK);   
  
  /* Sets the new configuration of the SPDIFRX peripheral */
  tmpreg |= ((uint16_t) sDataFormat.StereoMode |
             sDataFormat.DataFormat |
             sDataFormat.PreambleTypeMask |
             sDataFormat.ChannelStatusMask |
             sDataFormat.ValidityBitMask |
             sDataFormat.ParityErrorMask);
  
  hspdif->Instance->CR = tmpreg;  
  
  return HAL_OK;
}

HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow(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 synchronisation */
    __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 data flow */
    while(Size > 0U)
    {     
      /* Get tick */ 
      tickstart = HAL_GetTick();
      
      /* Wait until RXNE flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_RXNE, RESET, Timeout, tickstart) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      (*pData++) = hspdif->Instance->DR;
      Size--; 
    }      
    
    /* SPDIFRX ready */
    hspdif->State = HAL_SPDIFRX_STATE_READY;
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

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;
  }
}

HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  uint32_t tickstart = 0U;
  
  if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_CX))
  {
    if((pData == NULL) || (Size == 0U)) 
    {
      return HAL_ERROR;
    }
    
    /* Process Locked */
    __HAL_LOCK(hspdif);
    
    hspdif->pRxBuffPtr = pData;
    hspdif->RxXferSize = Size;
    hspdif->RxXferCount = Size;
    
    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    
    /* Check if a receive process is ongoing or not */
    hspdif->State = HAL_SPDIFRX_STATE_BUSY_RX;
    
    
    /* 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 RXNE interrupt */
    __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_RXNE);
    
    if (((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC) || ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00U)) 
    {
      /* 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, SPDIFRX_TIMEOUT_VALUE, tickstart) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
    }
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  uint32_t tickstart = 0U;
  
  if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_RX))
  {
    if((pData == NULL ) || (Size == 0U)) 
    {
      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) != 0x00U)) 
    {
      /* 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, SPDIFRX_TIMEOUT_VALUE, tickstart) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
    }
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow_DMA(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  uint32_t tickstart = 0U;
  
  if((pData == NULL) || (Size == 0U)) 
  {
    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) != 0x00U)) 
    {
      /* 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, SPDIFRX_TIMEOUT_VALUE, tickstart) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
    }
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow_DMA(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  uint32_t tickstart = 0U;
  
  if((pData == NULL) || (Size == 0U)) 
  {
    return  HAL_ERROR;                                    
  } 
  
  if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_RX))
  {    
    hspdif->pCsBuffPtr = pData;
    hspdif->CsXferSize = Size;
    hspdif->CsXferCount = Size;
    
    /* Process Locked */
    __HAL_LOCK(hspdif);
    
    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    hspdif->State = HAL_SPDIFRX_STATE_BUSY_CX;
    
    /* Set the SPDIFRX Rx DMA Half transfer complete callback */
    hspdif->hdmaCsRx->XferHalfCpltCallback = SPDIFRX_DMACxHalfCplt;
    
    /* Set the SPDIFRX Rx DMA transfer complete callback */
    hspdif->hdmaCsRx->XferCpltCallback = SPDIFRX_DMACxCplt;
    
    /* Set the DMA error callback */
    hspdif->hdmaCsRx->XferErrorCallback = SPDIFRX_DMAError;
    
    /* Enable the DMA request */
    HAL_DMA_Start_IT(hspdif->hdmaCsRx, (uint32_t)&hspdif->Instance->CSR, (uint32_t)hspdif->pCsBuffPtr, Size);
    
    /* Enable CBDMAEN bit in SPDIFRX CR register for control flow reception*/
    hspdif->Instance->CR |= SPDIFRX_CR_CBDMAEN;
    
    if (((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC) || ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00U)) 
    {
      /* 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, SPDIFRX_TIMEOUT_VALUE, tickstart) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
    }
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

HAL_StatusTypeDef HAL_SPDIFRX_DMAStop(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Process Locked */
  __HAL_LOCK(hspdif);
  
  /* Disable the SPDIFRX DMA requests */
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_RXDMAEN);
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_CBDMAEN);
  
  /* Disable the SPDIFRX DMA channel */
  __HAL_DMA_DISABLE(hspdif->hdmaDrRx);
  __HAL_DMA_DISABLE(hspdif->hdmaCsRx);
  
  /* Disable SPDIFRX peripheral */
  __HAL_SPDIFRX_IDLE(hspdif);
  
  hspdif->State = HAL_SPDIFRX_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hspdif);
  
  return HAL_OK;
}

void HAL_SPDIFRX_IRQHandler(SPDIFRX_HandleTypeDef *hspdif)
{  
  /* SPDIFRX in mode Data Flow Reception ------------------------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_RXNE) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_RXNE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_IT_RXNE);
    SPDIFRX_ReceiveDataFlow_IT(hspdif);
  }
  
  /* SPDIFRX in mode Control Flow Reception ------------------------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_CSRNE) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_CSRNE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_IT_CSRNE);
    SPDIFRX_ReceiveControlFlow_IT(hspdif);
  }
  
  /* SPDIFRX Overrun error interrupt occurred ---------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_OVR) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_OVRIE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_FLAG_OVR);
    
    /* Change the SPDIFRX error code */
    hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_OVR;
    
    /* the transfer is not stopped */
    HAL_SPDIFRX_ErrorCallback(hspdif);
  } 
  
  /* SPDIFRX Parity error interrupt occurred ---------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_PERR) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_PERRIE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_FLAG_PERR);
    
    /* Change the SPDIFRX error code */
    hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_PE;
    
    /* the transfer is not stopped */
    HAL_SPDIFRX_ErrorCallback(hspdif);
  } 
}

__weak void HAL_SPDIFRX_RxHalfCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

__weak void HAL_SPDIFRX_RxCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

__weak void HAL_SPDIFRX_CxHalfCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

__weak void HAL_SPDIFRX_CxCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

__weak void HAL_SPDIFRX_ErrorCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hspdif);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_ErrorCallback could be implemented in the user file
  */ 
}

HAL_SPDIFRX_StateTypeDef HAL_SPDIFRX_GetState(SPDIFRX_HandleTypeDef *hspdif)
{
  return hspdif->State;
}

uint32_t HAL_SPDIFRX_GetError(SPDIFRX_HandleTypeDef *hspdif)
{
  return hspdif->ErrorCode;
}

static void SPDIFRX_DMARxCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Rx DMA Request */
  if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
  {
    hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_RXDMAEN);
    hspdif->RxXferCount = 0;
    hspdif->State = HAL_SPDIFRX_STATE_READY; 
  }
  HAL_SPDIFRX_RxCpltCallback(hspdif); 
}

static void SPDIFRX_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = (SPDIFRX_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
  
  HAL_SPDIFRX_RxHalfCpltCallback(hspdif); 
}


static void SPDIFRX_DMACxCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Cb DMA Request */
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_CBDMAEN);
  hspdif->CsXferCount = 0;
  
  hspdif->State = HAL_SPDIFRX_STATE_READY; 
  HAL_SPDIFRX_CxCpltCallback(hspdif); 
}

static void SPDIFRX_DMACxHalfCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = (SPDIFRX_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
  
  HAL_SPDIFRX_CxHalfCpltCallback(hspdif); 
}

static void SPDIFRX_DMAError(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Rx and Cb DMA Request */
  hspdif->Instance->CR &= (uint16_t)(~(SPDIFRX_CR_RXDMAEN | SPDIFRX_CR_CBDMAEN));
  hspdif->RxXferCount = 0;
  
  hspdif->State= HAL_SPDIFRX_STATE_READY;
  
  /* Set the error code and execute error callback*/
  hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_DMA;
  HAL_SPDIFRX_ErrorCallback(hspdif);
}

static void SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Receive data */
  (*hspdif->pRxBuffPtr++) = hspdif->Instance->DR;
  hspdif->RxXferCount--;
  
  if(hspdif->RxXferCount == 0)
  {            
    /* Disable RXNE/PE and OVR interrupts */
    __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE | SPDIFRX_IT_PERRIE | SPDIFRX_IT_RXNE);
    
    hspdif->State = HAL_SPDIFRX_STATE_READY;
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    HAL_SPDIFRX_RxCpltCallback(hspdif);
  }
}

static void SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Receive data */
  (*hspdif->pCsBuffPtr++) = hspdif->Instance->CSR;
  hspdif->CsXferCount--;
  
  if(hspdif->CsXferCount == 0)
  {        
    /* Disable CSRNE interrupt */
    __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
    
    hspdif->State = HAL_SPDIFRX_STATE_READY; 
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    HAL_SPDIFRX_CxCpltCallback(hspdif);
  }
}

static HAL_StatusTypeDef SPDIFRX_WaitOnFlagUntilTimeout(SPDIFRX_HandleTypeDef *hspdif, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t tickstart)
{
  /* Wait until flag is set */
  if(Status == RESET)
  {
    while(__HAL_SPDIFRX_GET_FLAG(hspdif, Flag) == RESET)
    {
      /* Check for the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
        {
          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_RXNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_PERRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SBLKIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SYNCDIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_IFEIE);
          
          hspdif->State= HAL_SPDIFRX_STATE_READY;
          
          /* Process Unlocked */
          __HAL_UNLOCK(hspdif);
          
          return HAL_TIMEOUT;
        }
      }
    }
  }
  else
  {
    while(__HAL_SPDIFRX_GET_FLAG(hspdif, Flag) != RESET)
    {
      /* Check for the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
        {
          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_RXNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_PERRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SBLKIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SYNCDIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_IFEIE);
          
          hspdif->State= HAL_SPDIFRX_STATE_READY;
          
          /* Process Unlocked */
          __HAL_UNLOCK(hspdif);
          
          return HAL_TIMEOUT;
        }
      }
    }
  }
  return HAL_OK;
}

#endif /* HAL_SPDIFRX_MODULE_ENABLED */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/