stm32f4xx_hal_dcmi.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
 
#ifdef HAL_DCMI_MODULE_ENABLED
 
#if defined(STM32F407xx) || defined(STM32F417xx) || defined(STM32F427xx) || defined(STM32F437xx) ||\
    defined(STM32F429xx) || defined(STM32F439xx) || defined(STM32F446xx) || defined(STM32F469xx) ||\
    defined(STM32F479xx)
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define HAL_TIMEOUT_DCMI_STOP    14U  /* Set timeout to 1s  */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void       DCMI_DMAXferCplt(DMA_HandleTypeDef *hdma);
static void       DCMI_DMAError(DMA_HandleTypeDef *hdma);
 
/* Exported functions --------------------------------------------------------*/
 
__weak HAL_StatusTypeDef HAL_DCMI_Init(DCMI_HandleTypeDef *hdcmi)
{
  /* Check the DCMI peripheral state */
  if(hdcmi == NULL)
  {
     return HAL_ERROR;
  }
 
  /* Check function parameters */
  assert_param(IS_DCMI_ALL_INSTANCE(hdcmi->Instance));
  assert_param(IS_DCMI_PCKPOLARITY(hdcmi->Init.PCKPolarity));
  assert_param(IS_DCMI_VSPOLARITY(hdcmi->Init.VSPolarity));
  assert_param(IS_DCMI_HSPOLARITY(hdcmi->Init.HSPolarity));
  assert_param(IS_DCMI_SYNCHRO(hdcmi->Init.SynchroMode));
  assert_param(IS_DCMI_CAPTURE_RATE(hdcmi->Init.CaptureRate));
  assert_param(IS_DCMI_EXTENDED_DATA(hdcmi->Init.ExtendedDataMode));
  assert_param(IS_DCMI_MODE_JPEG(hdcmi->Init.JPEGMode));
 
  if(hdcmi->State == HAL_DCMI_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hdcmi->Lock = HAL_UNLOCKED;
    /* Init the low level hardware */
  /* Init the DCMI Callback settings */
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
    hdcmi->FrameEventCallback = HAL_DCMI_FrameEventCallback; /* Legacy weak FrameEventCallback  */ 
    hdcmi->VsyncEventCallback = HAL_DCMI_VsyncEventCallback; /* Legacy weak VsyncEventCallback  */ 
    hdcmi->LineEventCallback  = HAL_DCMI_LineEventCallback;  /* Legacy weak LineEventCallback   */  
    hdcmi->ErrorCallback      = HAL_DCMI_ErrorCallback;      /* Legacy weak ErrorCallback       */ 
    
    if(hdcmi->MspInitCallback == NULL)  
    {
      /* Legacy weak MspInit Callback        */
      hdcmi->MspInitCallback = HAL_DCMI_MspInit;
    }
    /* Initialize the low level hardware (MSP) */
    hdcmi->MspInitCallback(hdcmi);
#else  
    /* Init the low level hardware : GPIO, CLOCK, NVIC and DMA */
    HAL_DCMI_MspInit(hdcmi);
#endif /* (USE_HAL_DCMI_REGISTER_CALLBACKS) */
    HAL_DCMI_MspInit(hdcmi);
  }
 
  /* Change the DCMI state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Set DCMI parameters */
  /* Configures the HS, VS, DE and PC polarity */
  hdcmi->Instance->CR &= ~(DCMI_CR_PCKPOL | DCMI_CR_HSPOL  | DCMI_CR_VSPOL  | DCMI_CR_EDM_0 |
                           DCMI_CR_EDM_1  | DCMI_CR_FCRC_0 | DCMI_CR_FCRC_1 | DCMI_CR_JPEG  |
                           DCMI_CR_ESS);
  hdcmi->Instance->CR |=  (uint32_t)(hdcmi->Init.SynchroMode | hdcmi->Init.CaptureRate | \
                                     hdcmi->Init.VSPolarity  | hdcmi->Init.HSPolarity  | \
                                     hdcmi->Init.PCKPolarity | hdcmi->Init.ExtendedDataMode | \
                                     hdcmi->Init.JPEGMode);
 
  if(hdcmi->Init.SynchroMode == DCMI_SYNCHRO_EMBEDDED)
  {
    hdcmi->Instance->ESCR = (((uint32_t)hdcmi->Init.SyncroCode.FrameStartCode)    |
                             ((uint32_t)hdcmi->Init.SyncroCode.LineStartCode << DCMI_POSITION_ESCR_LSC)|
                             ((uint32_t)hdcmi->Init.SyncroCode.LineEndCode << DCMI_POSITION_ESCR_LEC) |
                             ((uint32_t)hdcmi->Init.SyncroCode.FrameEndCode << DCMI_POSITION_ESCR_FEC));
  }
 
  /* Enable the Line, Vsync, Error and Overrun interrupts */
  __HAL_DCMI_ENABLE_IT(hdcmi, DCMI_IT_LINE | DCMI_IT_VSYNC | DCMI_IT_ERR | DCMI_IT_OVR);
 
  /* Update error code */
  hdcmi->ErrorCode = HAL_DCMI_ERROR_NONE;
 
  /* Initialize the DCMI state*/
  hdcmi->State  = HAL_DCMI_STATE_READY;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_DCMI_DeInit(DCMI_HandleTypeDef *hdcmi)
{
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)  
  if(hdcmi->MspDeInitCallback == NULL)  
  {
    hdcmi->MspDeInitCallback = HAL_DCMI_MspDeInit;
  }
  /* De-Initialize the low level hardware (MSP) */
  hdcmi->MspDeInitCallback(hdcmi);
#else
  /* DeInit the low level hardware: GPIO, CLOCK, NVIC and DMA */
  HAL_DCMI_MspDeInit(hdcmi);
#endif /* (USE_HAL_DCMI_REGISTER_CALLBACKS) */
 
  /* Update error code */
  hdcmi->ErrorCode = HAL_DCMI_ERROR_NONE;
 
  /* Initialize the DCMI state*/
  hdcmi->State = HAL_DCMI_STATE_RESET;
 
  /* Release Lock */
  __HAL_UNLOCK(hdcmi);
 
  return HAL_OK;
}
 
__weak void HAL_DCMI_MspInit(DCMI_HandleTypeDef* hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_MspInit could be implemented in the user file
   */ 
}
 
__weak void HAL_DCMI_MspDeInit(DCMI_HandleTypeDef* hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_MspDeInit could be implemented in the user file
   */
}
 
HAL_StatusTypeDef HAL_DCMI_Start_DMA(DCMI_HandleTypeDef* hdcmi, uint32_t DCMI_Mode, uint32_t pData, uint32_t Length)
{
  /* Initialize the second memory address */
  uint32_t SecondMemAddress = 0U;
 
  /* Check function parameters */
  assert_param(IS_DCMI_CAPTURE_MODE(DCMI_Mode));
 
  /* Process Locked */
  __HAL_LOCK(hdcmi);
 
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
  
  /* Enable DCMI by setting DCMIEN bit */
  __HAL_DCMI_ENABLE(hdcmi);
 
  /* Configure the DCMI Mode */
  hdcmi->Instance->CR &= ~(DCMI_CR_CM);
  hdcmi->Instance->CR |=  (uint32_t)(DCMI_Mode);
 
  /* Set the DMA memory0 conversion complete callback */
  hdcmi->DMA_Handle->XferCpltCallback = DCMI_DMAXferCplt;
 
  /* Set the DMA error callback */
  hdcmi->DMA_Handle->XferErrorCallback = DCMI_DMAError;
 
  /* Set the dma abort callback */
  hdcmi->DMA_Handle->XferAbortCallback = NULL;
  
  /* Reset transfer counters value */ 
  hdcmi->XferCount = 0U;
  hdcmi->XferTransferNumber = 0U;
 
  if(Length <= 0xFFFFU)
  {
    /* Enable the DMA Stream */
    HAL_DMA_Start_IT(hdcmi->DMA_Handle, (uint32_t)&hdcmi->Instance->DR, (uint32_t)pData, Length);
  }
  else /* DCMI_DOUBLE_BUFFER Mode */
  {
    /* Set the DMA memory1 conversion complete callback */
    hdcmi->DMA_Handle->XferM1CpltCallback = DCMI_DMAXferCplt;
 
    /* Initialize transfer parameters */
    hdcmi->XferCount = 1U;
    hdcmi->XferSize = Length;
    hdcmi->pBuffPtr = pData;
 
    /* Get the number of buffer */
    while(hdcmi->XferSize > 0xFFFFU)
    {
      hdcmi->XferSize = (hdcmi->XferSize/2U);
      hdcmi->XferCount = hdcmi->XferCount*2U;
    }
 
    /* Update DCMI counter  and transfer number*/
    hdcmi->XferCount = (hdcmi->XferCount - 2U);
    hdcmi->XferTransferNumber = hdcmi->XferCount;
 
    /* Update second memory address */
    SecondMemAddress = (uint32_t)(pData + (4U*hdcmi->XferSize));
 
    /* Start DMA multi buffer transfer */
    HAL_DMAEx_MultiBufferStart_IT(hdcmi->DMA_Handle, (uint32_t)&hdcmi->Instance->DR, (uint32_t)pData, SecondMemAddress, hdcmi->XferSize);
  }
 
  /* Enable Capture */
  hdcmi->Instance->CR |= DCMI_CR_CAPTURE;
 
  /* Release Lock */
  __HAL_UNLOCK(hdcmi);
 
  /* Return function status */
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_DCMI_Stop(DCMI_HandleTypeDef* hdcmi)
{
  __IO uint32_t count = SystemCoreClock / HAL_TIMEOUT_DCMI_STOP;
  HAL_StatusTypeDef status = HAL_OK;
 
  /* Process locked */
  __HAL_LOCK(hdcmi);
  
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Disable Capture */
  hdcmi->Instance->CR &= ~(DCMI_CR_CAPTURE);
 
  /* Check if the DCMI capture effectively disabled */
  do
  {
    if (count-- == 0U)
    {
      /* Update error code */
      hdcmi->ErrorCode |= HAL_DCMI_ERROR_TIMEOUT;
 
      status = HAL_TIMEOUT;
      break;
    }
  }
  while((hdcmi->Instance->CR & DCMI_CR_CAPTURE) != 0U);
 
  /* Disable the DCMI */
  __HAL_DCMI_DISABLE(hdcmi);
 
  /* Disable the DMA */
  HAL_DMA_Abort(hdcmi->DMA_Handle);
 
  /* Update error code */
  hdcmi->ErrorCode |= HAL_DCMI_ERROR_NONE;
 
  /* Change DCMI state */
  hdcmi->State = HAL_DCMI_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
 
  /* Return function status */
  return status;
}
 
HAL_StatusTypeDef HAL_DCMI_Suspend(DCMI_HandleTypeDef* hdcmi)
{
  __IO uint32_t count = SystemCoreClock / HAL_TIMEOUT_DCMI_STOP;
  HAL_StatusTypeDef status = HAL_OK;
 
  /* Process locked */
  __HAL_LOCK(hdcmi);
 
  if(hdcmi->State == HAL_DCMI_STATE_BUSY)
  {
    /* Change DCMI state */
    hdcmi->State = HAL_DCMI_STATE_SUSPENDED;
 
    /* Disable Capture */
    hdcmi->Instance->CR &= ~(DCMI_CR_CAPTURE);
 
    /* Check if the DCMI capture effectively disabled */
    do
    {
      if (count-- == 0U)
      {        
        /* Update error code */
        hdcmi->ErrorCode |= HAL_DCMI_ERROR_TIMEOUT;
        
        /* Change DCMI state */
        hdcmi->State = HAL_DCMI_STATE_READY;
        
        status = HAL_TIMEOUT;
        break;
      }
    }
    while((hdcmi->Instance->CR & DCMI_CR_CAPTURE) != 0);
  }    
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
  
  /* Return function status */
  return status;
}
 
HAL_StatusTypeDef HAL_DCMI_Resume(DCMI_HandleTypeDef* hdcmi)
{
  /* Process locked */
  __HAL_LOCK(hdcmi);
  
  if(hdcmi->State == HAL_DCMI_STATE_SUSPENDED)
  {
    /* Change DCMI state */
    hdcmi->State = HAL_DCMI_STATE_BUSY;
    
    /* Disable Capture */
    hdcmi->Instance->CR |= DCMI_CR_CAPTURE;
  } 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
  
  /* Return function status */
  return HAL_OK;
}
 
void HAL_DCMI_IRQHandler(DCMI_HandleTypeDef *hdcmi)
{
  uint32_t isr_value = READ_REG(hdcmi->Instance->MISR);
 
  /* Synchronization error interrupt management *******************************/
  if((isr_value & DCMI_FLAG_ERRRI) == DCMI_FLAG_ERRRI)
  {
    /* Clear the Synchronization error flag */
    __HAL_DCMI_CLEAR_FLAG(hdcmi, DCMI_FLAG_ERRRI);
 
    /* Update error code */
    hdcmi->ErrorCode |= HAL_DCMI_ERROR_SYNC;
 
    /* Change DCMI state */
    hdcmi->State = HAL_DCMI_STATE_ERROR;
    
    /* Set the synchronization error callback */
    hdcmi->DMA_Handle->XferAbortCallback = DCMI_DMAError;
 
    /* Abort the DMA Transfer */
    HAL_DMA_Abort_IT(hdcmi->DMA_Handle);
  }
  /* Overflow interrupt management ********************************************/
  if((isr_value & DCMI_FLAG_OVRRI) == DCMI_FLAG_OVRRI)
  {
    /* Clear the Overflow flag */
    __HAL_DCMI_CLEAR_FLAG(hdcmi, DCMI_FLAG_OVRRI);
 
    /* Update error code */
    hdcmi->ErrorCode |= HAL_DCMI_ERROR_OVR;
 
    /* Change DCMI state */
    hdcmi->State = HAL_DCMI_STATE_ERROR;
    
    /* Set the overflow callback */
    hdcmi->DMA_Handle->XferAbortCallback = DCMI_DMAError;
 
    /* Abort the DMA Transfer */
    HAL_DMA_Abort_IT(hdcmi->DMA_Handle);
  }
  /* Line Interrupt management ************************************************/
  if((isr_value & DCMI_FLAG_LINERI) == DCMI_FLAG_LINERI)
  {
    /* Clear the Line interrupt flag */
    __HAL_DCMI_CLEAR_FLAG(hdcmi, DCMI_FLAG_LINERI);
    
    /* Line interrupt Callback */
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
    /*Call registered DCMI line event callback*/
    hdcmi->LineEventCallback(hdcmi);
#else  
    HAL_DCMI_LineEventCallback(hdcmi);
#endif /* USE_HAL_DCMI_REGISTER_CALLBACKS */     
  }
  /* VSYNC interrupt management ***********************************************/
  if((isr_value & DCMI_FLAG_VSYNCRI) == DCMI_FLAG_VSYNCRI)
  {
    /* Clear the VSYNC flag */
    __HAL_DCMI_CLEAR_FLAG(hdcmi, DCMI_FLAG_VSYNCRI);
    
    /* VSYNC Callback */
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
    /*Call registered DCMI vsync event callback*/
    hdcmi->VsyncEventCallback(hdcmi);
#else  
    HAL_DCMI_VsyncEventCallback(hdcmi);
#endif /* USE_HAL_DCMI_REGISTER_CALLBACKS */ 
  }
  /* FRAME interrupt management ***********************************************/
  if((isr_value & DCMI_FLAG_FRAMERI) == DCMI_FLAG_FRAMERI)
  {
    /* When snapshot mode, disable Vsync, Error and Overrun interrupts */
    if((hdcmi->Instance->CR & DCMI_CR_CM) == DCMI_MODE_SNAPSHOT)
    { 
      /* Disable the Line, Vsync, Error and Overrun interrupts */
      __HAL_DCMI_DISABLE_IT(hdcmi, DCMI_IT_LINE | DCMI_IT_VSYNC | DCMI_IT_ERR | DCMI_IT_OVR);
    }
 
    /* Disable the Frame interrupt */
    __HAL_DCMI_DISABLE_IT(hdcmi, DCMI_IT_FRAME);
 
    /* Frame Callback */
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
    /*Call registered DCMI frame event callback*/
    hdcmi->FrameEventCallback(hdcmi);
#else  
    HAL_DCMI_FrameEventCallback(hdcmi);
#endif /* USE_HAL_DCMI_REGISTER_CALLBACKS */      
  }
}
 
__weak void HAL_DCMI_ErrorCallback(DCMI_HandleTypeDef *hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_ErrorCallback could be implemented in the user file
   */
}
 
__weak void HAL_DCMI_LineEventCallback(DCMI_HandleTypeDef *hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_LineEventCallback could be implemented in the user file
   */
}
 
__weak void HAL_DCMI_VsyncEventCallback(DCMI_HandleTypeDef *hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_VsyncEventCallback could be implemented in the user file
   */
}
 
__weak void HAL_DCMI_FrameEventCallback(DCMI_HandleTypeDef *hdcmi)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdcmi);
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_DCMI_FrameEventCallback could be implemented in the user file
   */
}
 
HAL_StatusTypeDef HAL_DCMI_ConfigCrop(DCMI_HandleTypeDef *hdcmi, uint32_t X0, uint32_t Y0, uint32_t XSize, uint32_t YSize)
{
  /* Process Locked */
  __HAL_LOCK(hdcmi);
 
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Check the parameters */
  assert_param(IS_DCMI_WINDOW_COORDINATE(X0));
  assert_param(IS_DCMI_WINDOW_COORDINATE(YSize));
  assert_param(IS_DCMI_WINDOW_COORDINATE(XSize));
  assert_param(IS_DCMI_WINDOW_HEIGHT(Y0));
 
  /* Configure CROP */
  hdcmi->Instance->CWSIZER = (XSize | (YSize << DCMI_POSITION_CWSIZE_VLINE));
  hdcmi->Instance->CWSTRTR = (X0 | (Y0 << DCMI_POSITION_CWSTRT_VST));
 
  /* Initialize the DCMI state*/
  hdcmi->State  = HAL_DCMI_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_DCMI_DisableCrop(DCMI_HandleTypeDef *hdcmi)
{
  /* Process Locked */
  __HAL_LOCK(hdcmi);
 
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Disable DCMI Crop feature */
  hdcmi->Instance->CR &= ~(uint32_t)DCMI_CR_CROP;
 
  /* Change the DCMI state*/
  hdcmi->State = HAL_DCMI_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_DCMI_EnableCrop(DCMI_HandleTypeDef *hdcmi)
{
  /* Process Locked */
  __HAL_LOCK(hdcmi);
 
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Enable DCMI Crop feature */
  hdcmi->Instance->CR |= (uint32_t)DCMI_CR_CROP;
 
  /* Change the DCMI state*/
  hdcmi->State = HAL_DCMI_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef  HAL_DCMI_ConfigSyncUnmask(DCMI_HandleTypeDef *hdcmi, DCMI_SyncUnmaskTypeDef *SyncUnmask)
{
  /* Process Locked */
  __HAL_LOCK(hdcmi);
 
  /* Lock the DCMI peripheral state */
  hdcmi->State = HAL_DCMI_STATE_BUSY;
 
  /* Write DCMI embedded synchronization unmask register */
  hdcmi->Instance->ESUR = (((uint32_t)SyncUnmask->FrameStartUnmask) |\
                           ((uint32_t)SyncUnmask->LineStartUnmask << DCMI_ESUR_LSU_Pos)|\
                           ((uint32_t)SyncUnmask->LineEndUnmask << DCMI_ESUR_LEU_Pos)|\
                           ((uint32_t)SyncUnmask->FrameEndUnmask << DCMI_ESUR_FEU_Pos));
 
  /* Change the DCMI state*/
  hdcmi->State = HAL_DCMI_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(hdcmi);
 
  return HAL_OK;
}
 
HAL_DCMI_StateTypeDef HAL_DCMI_GetState(DCMI_HandleTypeDef *hdcmi)
{
  return hdcmi->State;
}
 
uint32_t HAL_DCMI_GetError(DCMI_HandleTypeDef *hdcmi)
{
  return hdcmi->ErrorCode;
}
 
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
HAL_StatusTypeDef HAL_DCMI_RegisterCallback(DCMI_HandleTypeDef *hdcmi, HAL_DCMI_CallbackIDTypeDef CallbackID, pDCMI_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  if(pCallback == NULL)
  {
    /* update the error code */
    hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;  
    /* update return status */
    status = HAL_ERROR;
  }
  else
  {
    if(hdcmi->State == HAL_DCMI_STATE_READY)
    {
      switch (CallbackID)
      {
      case HAL_DCMI_FRAME_EVENT_CB_ID :
        hdcmi->FrameEventCallback = pCallback;
        break;
        
      case HAL_DCMI_VSYNC_EVENT_CB_ID :
        hdcmi->VsyncEventCallback = pCallback;
        break; 
        
      case HAL_DCMI_LINE_EVENT_CB_ID :
        hdcmi->LineEventCallback = pCallback;
        break;
        
      case HAL_DCMI_ERROR_CB_ID :
        hdcmi->ErrorCallback = pCallback;
        break;
        
      case HAL_DCMI_MSPINIT_CB_ID :
        hdcmi->MspInitCallback = pCallback;
        break;
        
      case HAL_DCMI_MSPDEINIT_CB_ID :
        hdcmi->MspDeInitCallback = pCallback;
        break;    
        
      default : 
        /* Return error status */
        status =  HAL_ERROR;
        break;
      }
    }
    else if(hdcmi->State == HAL_DCMI_STATE_RESET)
    {
      switch (CallbackID)
      {
      case HAL_DCMI_MSPINIT_CB_ID :
        hdcmi->MspInitCallback = pCallback;
        break;
 
      case HAL_DCMI_MSPDEINIT_CB_ID :
        hdcmi->MspDeInitCallback = pCallback;
        break;    
        
      default : 
        /* update the error code */
        hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;
        /* update return status */
        status = HAL_ERROR;
        break;
      }     
    }  
    else
    {
      /* update the error code */
      hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;
      /* update return status */
      status = HAL_ERROR;
    }
  }
  
  return status;
}
 
HAL_StatusTypeDef HAL_DCMI_UnRegisterCallback(DCMI_HandleTypeDef *hdcmi, HAL_DCMI_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  if(hdcmi->State == HAL_DCMI_STATE_READY)
  {
    switch (CallbackID)
    {
    case HAL_DCMI_FRAME_EVENT_CB_ID :
      hdcmi->FrameEventCallback = HAL_DCMI_FrameEventCallback;  /* Legacy weak  FrameEventCallback  */ 
      break;
      
    case HAL_DCMI_VSYNC_EVENT_CB_ID :
      hdcmi->VsyncEventCallback = HAL_DCMI_VsyncEventCallback;  /* Legacy weak VsyncEventCallback       */ 
      break;
      
    case HAL_DCMI_LINE_EVENT_CB_ID :
      hdcmi->LineEventCallback = HAL_DCMI_LineEventCallback;    /* Legacy weak LineEventCallback   */
      break;
      
    case HAL_DCMI_ERROR_CB_ID :
      hdcmi->ErrorCallback = HAL_DCMI_ErrorCallback;           /* Legacy weak ErrorCallback        */ 
      break;  
      
    case HAL_DCMI_MSPINIT_CB_ID :
      hdcmi->MspInitCallback = HAL_DCMI_MspInit;
      break;
      
    case HAL_DCMI_MSPDEINIT_CB_ID :
      hdcmi->MspDeInitCallback = HAL_DCMI_MspDeInit;
      break;      
      
    default : 
      /* update the error code */
      hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;
      /* update return status */
      status = HAL_ERROR;
      break;
    }
  }
  else if(hdcmi->State == HAL_DCMI_STATE_RESET)
  {
    switch (CallbackID)
    {
    case HAL_DCMI_MSPINIT_CB_ID :
      hdcmi->MspInitCallback = HAL_DCMI_MspInit;
      break;
      
    case HAL_DCMI_MSPDEINIT_CB_ID :
      hdcmi->MspDeInitCallback = HAL_DCMI_MspDeInit;
      break;      
      
    default : 
      /* update the error code */
      hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;
      /* update return status */
      status = HAL_ERROR;
      break;
    }       
  }   
  else
  {
    /* update the error code */
    hdcmi->ErrorCode |= HAL_DCMI_ERROR_INVALID_CALLBACK;
    /* update return status */
    status = HAL_ERROR;
  }
  
  return status;
}
#endif /* USE_HAL_DCMI_REGISTER_CALLBACKS */
 
/* Private functions ---------------------------------------------------------*/
static void DCMI_DMAXferCplt(DMA_HandleTypeDef *hdma)
{
  uint32_t tmp = 0U;
 
  DCMI_HandleTypeDef* hdcmi = ( DCMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  if(hdcmi->XferCount != 0U)
  {
    /* Update memory 0 address location */
    tmp = ((hdcmi->DMA_Handle->Instance->CR) & DMA_SxCR_CT);
    if(((hdcmi->XferCount % 2U) == 0U) && (tmp != 0U))
    {
      tmp = hdcmi->DMA_Handle->Instance->M0AR;
      HAL_DMAEx_ChangeMemory(hdcmi->DMA_Handle, (tmp + (8U*hdcmi->XferSize)), MEMORY0);
      hdcmi->XferCount--;
    }
    /* Update memory 1 address location */
    else if((hdcmi->DMA_Handle->Instance->CR & DMA_SxCR_CT) == 0U)
    {
      tmp = hdcmi->DMA_Handle->Instance->M1AR;
      HAL_DMAEx_ChangeMemory(hdcmi->DMA_Handle, (tmp + (8U*hdcmi->XferSize)), MEMORY1);
      hdcmi->XferCount--;
    }
  }
  /* Update memory 0 address location */
  else if((hdcmi->DMA_Handle->Instance->CR & DMA_SxCR_CT) != 0U)
  {
    hdcmi->DMA_Handle->Instance->M0AR = hdcmi->pBuffPtr;
  }
  /* Update memory 1 address location */
  else if((hdcmi->DMA_Handle->Instance->CR & DMA_SxCR_CT) == 0U)
  {
    tmp = hdcmi->pBuffPtr;
    hdcmi->DMA_Handle->Instance->M1AR = (tmp + (4U*hdcmi->XferSize));
    hdcmi->XferCount = hdcmi->XferTransferNumber;
  }
  
  /* Check if the frame is transferred */
  if(hdcmi->XferCount == hdcmi->XferTransferNumber)
  {
    /* Enable the Frame interrupt */
    __HAL_DCMI_ENABLE_IT(hdcmi, DCMI_IT_FRAME);
    
    /* When snapshot mode, set dcmi state to ready */
    if((hdcmi->Instance->CR & DCMI_CR_CM) == DCMI_MODE_SNAPSHOT)
    {  
      hdcmi->State= HAL_DCMI_STATE_READY;
    }
  }
}
 
static void DCMI_DMAError(DMA_HandleTypeDef *hdma)
{
  DCMI_HandleTypeDef* hdcmi = ( DCMI_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  if(hdcmi->DMA_Handle->ErrorCode != HAL_DMA_ERROR_FE)
  {
    /* Initialize the DCMI state*/
    hdcmi->State = HAL_DCMI_STATE_READY;
  }
 
  /* DCMI error Callback */
#if (USE_HAL_DCMI_REGISTER_CALLBACKS == 1)
    /*Call registered DCMI error callback*/
    hdcmi->ErrorCallback(hdcmi);
#else  
  HAL_DCMI_ErrorCallback(hdcmi);
#endif /* USE_HAL_DCMI_REGISTER_CALLBACKS */   
 
}
 
#endif /* STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\
          STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx ||\
          STM32F479xx */
#endif /* HAL_DCMI_MODULE_ENABLED */