DCMI Exported Functions

Modules
	Initialization and Configuration functions
	Initialization and Configuration functions.
	IO operation functions
	IO operation functions.
	Peripheral Control functions
	Peripheral Control functions.
	Peripheral State functions
	Peripheral State functions.

Functions
HAL_StatusTypeDef	HAL_DCMI_RegisterCallback (DCMI_HandleTypeDef *hdcmi, HAL_DCMI_CallbackIDTypeDef CallbackID, pDCMI_CallbackTypeDef pCallback)
	DCMI Callback registering. More...
HAL_StatusTypeDef	HAL_DCMI_UnRegisterCallback (DCMI_HandleTypeDef *hdcmi, HAL_DCMI_CallbackIDTypeDef CallbackID)
	DCMI Callback Unregistering. More...

Detailed Description

Function Documentation

HAL_DCMI_RegisterCallback()

HAL_StatusTypeDef HAL_DCMI_RegisterCallback	(	DCMI_HandleTypeDef *	hdcmi,
		HAL_DCMI_CallbackIDTypeDef	CallbackID,
		pDCMI_CallbackTypeDef	pCallback
	)

DCMI Callback registering.

Parameters

hdcmi	dcmi handle
CallbackID	dcmi Callback ID
hdcmi	pointer to dcmi Callback function

Return values

status

Definition at line 1072 of file stm32l4xx_hal_dcmi.c.

{
  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_DCMI_UnRegisterCallback()

HAL_StatusTypeDef HAL_DCMI_UnRegisterCallback	(	DCMI_HandleTypeDef *	hdcmi,
		HAL_DCMI_CallbackIDTypeDef	CallbackID
	)

DCMI Callback Unregistering.

Parameters

hdcmi	dcmi handle
CallbackID	dcmi Callback ID

Return values

status

Definition at line 1157 of file stm32l4xx_hal_dcmi.c.

{
  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;
}