This file provides firmware functions to manage the following functionalities of the Digital Filter for Sigma-Delta Modulators (DFSDM) peripherals: More...

Functions
HAL_StatusTypeDef	HAL_DFSDM_ChannelInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	Initialize the DFSDM channel according to the specified parameters in the DFSDM_ChannelInitTypeDef structure and initialize the associated handle. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelDeInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	De-initialize the DFSDM channel. More...

void	HAL_DFSDM_ChannelMspInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	Initialize the DFSDM channel MSP. More...

void	HAL_DFSDM_ChannelMspDeInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	De-initialize the DFSDM channel MSP. More...

HAL_StatusTypeDef	HAL_DFSDM_Channel_RegisterCallback (DFSDM_Channel_HandleTypeDef *hdfsdm_channel, HAL_DFSDM_Channel_CallbackIDTypeDef CallbackID, pDFSDM_Channel_CallbackTypeDef pCallback)
	Register a user DFSDM channel callback to be used instead of the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_Channel_UnRegisterCallback (DFSDM_Channel_HandleTypeDef *hdfsdm_channel, HAL_DFSDM_Channel_CallbackIDTypeDef CallbackID)
	Unregister a user DFSDM channel callback. DFSDM channel callback is redirected to the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelCkabStart (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to start clock absence detection in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelPollForCkab (const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout)
	This function allows to poll for the clock absence detection. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelCkabStop (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to stop clock absence detection in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelCkabStart_IT (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to start clock absence detection in interrupt mode. More...

void	HAL_DFSDM_ChannelCkabCallback (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	Clock absence detection callback. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelCkabStop_IT (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to stop clock absence detection in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelScdStart (DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Threshold, uint32_t BreakSignal)
	This function allows to start short circuit detection in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelPollForScd (const DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Timeout)
	This function allows to poll for the short circuit detection. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelScdStop (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to stop short circuit detection in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelScdStart_IT (DFSDM_Channel_HandleTypeDef *hdfsdm_channel, uint32_t Threshold, uint32_t BreakSignal)
	This function allows to start short circuit detection in interrupt mode. More...

void	HAL_DFSDM_ChannelScdCallback (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	Short circuit detection callback. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelScdStop_IT (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to stop short circuit detection in interrupt mode. More...

int16_t	HAL_DFSDM_ChannelGetAwdValue (const DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to get channel analog watchdog value. More...

HAL_StatusTypeDef	HAL_DFSDM_ChannelModifyOffset (DFSDM_Channel_HandleTypeDef *hdfsdm_channel, int32_t Offset)
	This function allows to modify channel offset value. More...

HAL_DFSDM_Channel_StateTypeDef	HAL_DFSDM_ChannelGetState (const DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	This function allows to get the current DFSDM channel handle state. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Initialize the DFSDM filter according to the specified parameters in the DFSDM_FilterInitTypeDef structure and initialize the associated handle. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterDeInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	De-initializes the DFSDM filter. More...

void	HAL_DFSDM_FilterMspInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Initializes the DFSDM filter MSP. More...

void	HAL_DFSDM_FilterMspDeInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	De-initializes the DFSDM filter MSP. More...

HAL_StatusTypeDef	HAL_DFSDM_Filter_RegisterCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, HAL_DFSDM_Filter_CallbackIDTypeDef CallbackID, pDFSDM_Filter_CallbackTypeDef pCallback)
	Register a user DFSDM filter callback to be used instead of the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_Filter_UnRegisterCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, HAL_DFSDM_Filter_CallbackIDTypeDef CallbackID)
	Unregister a user DFSDM filter callback. DFSDM filter callback is redirected to the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_Filter_RegisterAwdCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, pDFSDM_Filter_AwdCallbackTypeDef pCallback)
	Register a user DFSDM filter analog watchdog callback to be used instead of the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_Filter_UnRegisterAwdCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Unregister a user DFSDM filter analog watchdog callback. DFSDM filter AWD callback is redirected to the weak predefined callback. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterConfigRegChannel (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Channel, uint32_t ContinuousMode)
	This function allows to select channel and to enable/disable continuous mode for regular conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterConfigInjChannel (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Channel)
	This function allows to select channels for injected conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStart (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to start regular conversion in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterPollForRegConversion (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Timeout)
	This function allows to poll for the end of regular conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStop (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop regular conversion in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStart_IT (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to start regular conversion in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStop_IT (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop regular conversion in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStart_DMA (DFSDM_Filter_HandleTypeDef hdfsdm_filter, int32_t pData, uint32_t Length)
	This function allows to start regular conversion in DMA mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularMsbStart_DMA (DFSDM_Filter_HandleTypeDef hdfsdm_filter, int16_t pData, uint32_t Length)
	This function allows to start regular conversion in DMA mode and to get only the 16 most significant bits of conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterRegularStop_DMA (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop regular conversion in DMA mode. More...

int32_t	HAL_DFSDM_FilterGetRegularValue (const DFSDM_Filter_HandleTypeDef hdfsdm_filter, uint32_t Channel)
	This function allows to get regular conversion value. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStart (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to start injected conversion in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterPollForInjConversion (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Timeout)
	This function allows to poll for the end of injected conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStop (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop injected conversion in polling mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStart_IT (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to start injected conversion in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStop_IT (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop injected conversion in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStart_DMA (DFSDM_Filter_HandleTypeDef hdfsdm_filter, int32_t pData, uint32_t Length)
	This function allows to start injected conversion in DMA mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedMsbStart_DMA (DFSDM_Filter_HandleTypeDef hdfsdm_filter, int16_t pData, uint32_t Length)
	This function allows to start injected conversion in DMA mode and to get only the 16 most significant bits of conversion. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterInjectedStop_DMA (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop injected conversion in DMA mode. More...

int32_t	HAL_DFSDM_FilterGetInjectedValue (const DFSDM_Filter_HandleTypeDef hdfsdm_filter, uint32_t Channel)
	This function allows to get injected conversion value. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterAwdStart_IT (DFSDM_Filter_HandleTypeDef hdfsdm_filter, const DFSDM_Filter_AwdParamTypeDef awdParam)
	This function allows to start filter analog watchdog in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterAwdStop_IT (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop filter analog watchdog in interrupt mode. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterExdStart (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Channel)
	This function allows to start extreme detector feature. More...

HAL_StatusTypeDef	HAL_DFSDM_FilterExdStop (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to stop extreme detector feature. More...

int32_t	HAL_DFSDM_FilterGetExdMaxValue (const DFSDM_Filter_HandleTypeDef hdfsdm_filter, uint32_t Channel)
	This function allows to get extreme detector maximum value. More...

int32_t	HAL_DFSDM_FilterGetExdMinValue (const DFSDM_Filter_HandleTypeDef hdfsdm_filter, uint32_t Channel)
	This function allows to get extreme detector minimum value. More...

uint32_t	HAL_DFSDM_FilterGetConvTimeValue (const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to get conversion time value. More...

void	HAL_DFSDM_IRQHandler (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function handles the DFSDM interrupts. More...

void	HAL_DFSDM_FilterRegConvCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Regular conversion complete callback. More...

void	HAL_DFSDM_FilterRegConvHalfCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Half regular conversion complete callback. More...

void	HAL_DFSDM_FilterInjConvCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Injected conversion complete callback. More...

void	HAL_DFSDM_FilterInjConvHalfCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Half injected conversion complete callback. More...

void	HAL_DFSDM_FilterAwdCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter, uint32_t Channel, uint32_t Threshold)
	Filter analog watchdog callback. More...

void	HAL_DFSDM_FilterErrorCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Error callback. More...

HAL_DFSDM_Filter_StateTypeDef	HAL_DFSDM_FilterGetState (const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to get the current DFSDM filter handle state. More...

uint32_t	HAL_DFSDM_FilterGetError (const DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	This function allows to get the current DFSDM filter error. More...

void	HAL_DFSDM_BitstreamClock_Start (void)
	Select the DFSDM2 as clock source for the bitstream clock. More...

void	HAL_DFSDM_BitstreamClock_Stop (void)
	Stop the DFSDM2 as clock source for the bitstream clock. More...

void	HAL_DFSDM_DisableDelayClock (uint32_t MCHDLY)
	Disable Delay Clock for DFSDM1/2. More...

void	HAL_DFSDM_EnableDelayClock (uint32_t MCHDLY)
	Enable Delay Clock for DFSDM1/2. More...

void	HAL_DFSDM_ClockIn_SourceSelection (uint32_t source)
	Select the source for CKin signals for DFSDM1/2. More...

void	HAL_DFSDM_ClockOut_SourceSelection (uint32_t source)
	Select the source for CKOut signals for DFSDM1/2. More...

void	HAL_DFSDM_DataIn0_SourceSelection (uint32_t source)
	Select the source for DataIn0 signals for DFSDM1/2. More...

void	HAL_DFSDM_DataIn2_SourceSelection (uint32_t source)
	Select the source for DataIn2 signals for DFSDM1/2. More...

void	HAL_DFSDM_DataIn4_SourceSelection (uint32_t source)
	Select the source for DataIn4 signals for DFSDM2. More...

void	HAL_DFSDM_DataIn6_SourceSelection (uint32_t source)
	Select the source for DataIn6 signals for DFSDM2. More...

void	HAL_DFSDM_BitStreamClkDistribution_Config (uint32_t source)
	Configure the distribution of the bitstream clock gated from TIM4_OC for DFSDM1 or TIM3_OC for DFSDM2. More...

void	HAL_DFSDM_ConfigMultiChannelDelay (DFSDM_MultiChannelConfigTypeDef *mchdlystruct)
	Configure multi channel delay block: Use DFSDM2 audio clock source as input clock for DFSDM1 and DFSDM2 filters to Synchronize DFSDMx filters. Set the path of the DFSDM2 clock output (dfsdm2_ckout) to the DFSDM1/2 CkInx and data inputs channels by configuring following MCHDLY muxes or demuxes: M1, M2, M3, M4, M5, M6, M7, M8, DM1, DM2, DM3, DM4, DM5, DM6, M9, M10, M11, M12, M13, M14, M15, M16, M17, M18, M19, M20 based on the contains of the DFSDM_MultiChannelConfigTypeDef structure. More...

Variables
__IO uint32_t	v_dfsdm1ChannelCounter = 0U

DFSDM_Channel_HandleTypeDef *	a_dfsdm1ChannelHandle [DFSDM1_CHANNEL_NUMBER] = {NULL}

__IO uint32_t	v_dfsdm2ChannelCounter = 0U

DFSDM_Channel_HandleTypeDef *	a_dfsdm2ChannelHandle [DFSDM2_CHANNEL_NUMBER] = {NULL}

Detailed Description

This file provides firmware functions to manage the following functionalities of the Digital Filter for Sigma-Delta Modulators (DFSDM) peripherals:

Author

MCD Application Team

Initialization and configuration of channels and filters
Regular channels configuration
Injected channels configuration
Regular/Injected Channels DMA Configuration
Interrupts and flags management
Analog watchdog feature
Short-circuit detector feature
Extremes detector feature
Clock absence detector feature
Break generation on analog watchdog or short-circuit event

Attention

This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS.

==============================================================================
                   ##### How to use this driver #####
==============================================================================
[..]
  *** Channel initialization ***
  ==============================
  [..]
    (#) User has first to initialize channels (before filters initialization).
    (#) As prerequisite, fill in the HAL_DFSDM_ChannelMspInit() :
      (++) Enable DFSDMz clock interface with __HAL_RCC_DFSDMz_CLK_ENABLE().
      (++) Enable the clocks for the DFSDMz GPIOS with __HAL_RCC_GPIOx_CLK_ENABLE().
      (++) Configure these DFSDMz pins in alternate mode using HAL_GPIO_Init().
      (++) If interrupt mode is used, enable and configure DFSDMz_FLT0 global
          interrupt with HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ().
    (#) Configure the output clock, input, serial interface, analog watchdog,
        offset and data right bit shift parameters for this channel using the
        HAL_DFSDM_ChannelInit() function.

  *** Channel clock absence detector ***
  ======================================
  [..]
    (#) Start clock absence detector using HAL_DFSDM_ChannelCkabStart() or
        HAL_DFSDM_ChannelCkabStart_IT().
    (#) In polling mode, use HAL_DFSDM_ChannelPollForCkab() to detect the clock
        absence.
    (#) In interrupt mode, HAL_DFSDM_ChannelCkabCallback() will be called if
        clock absence is detected.
    (#) Stop clock absence detector using HAL_DFSDM_ChannelCkabStop() or
        HAL_DFSDM_ChannelCkabStop_IT().
    (#) Please note that the same mode (polling or interrupt) has to be used
        for all channels because the channels are sharing the same interrupt.
    (#) Please note also that in interrupt mode, if clock absence detector is
        stopped for one channel, interrupt will be disabled for all channels.

  *** Channel short circuit detector ***
  ======================================
  [..]
    (#) Start short circuit detector using HAL_DFSDM_ChannelScdStart() or
        or HAL_DFSDM_ChannelScdStart_IT().
    (#) In polling mode, use HAL_DFSDM_ChannelPollForScd() to detect short
        circuit.
    (#) In interrupt mode, HAL_DFSDM_ChannelScdCallback() will be called if
        short circuit is detected.
    (#) Stop short circuit detector using HAL_DFSDM_ChannelScdStop() or
        or HAL_DFSDM_ChannelScdStop_IT().
    (#) Please note that the same mode (polling or interrupt) has to be used
        for all channels because the channels are sharing the same interrupt.
    (#) Please note also that in interrupt mode, if short circuit detector is
        stopped for one channel, interrupt will be disabled for all channels.

  *** Channel analog watchdog value ***
  =====================================
  [..]
    (#) Get analog watchdog filter value of a channel using
        HAL_DFSDM_ChannelGetAwdValue().

  *** Channel offset value ***
  =====================================
  [..]
    (#) Modify offset value of a channel using HAL_DFSDM_ChannelModifyOffset().

  *** Filter initialization ***
  =============================
  [..]
    (#) After channel initialization, user has to init filters.
    (#) As prerequisite, fill in the HAL_DFSDM_FilterMspInit() :
      (++) If interrupt mode is used , enable and configure DFSDMz_FLTx global
          interrupt with HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ().
          Please note that DFSDMz_FLT0 global interrupt could be already
          enabled if interrupt is used for channel.
      (++) If DMA mode is used, configure DMA with HAL_DMA_Init() and link it
          with DFSDMz filter handle using __HAL_LINKDMA().
    (#) Configure the regular conversion, injected conversion and filter
        parameters for this filter using the HAL_DFSDM_FilterInit() function.

  *** Filter regular channel conversion ***
  =========================================
  [..]
    (#) Select regular channel and enable/disable continuous mode using
        HAL_DFSDM_FilterConfigRegChannel().
    (#) Start regular conversion using HAL_DFSDM_FilterRegularStart(),
        HAL_DFSDM_FilterRegularStart_IT(), HAL_DFSDM_FilterRegularStart_DMA() or
        HAL_DFSDM_FilterRegularMsbStart_DMA().
    (#) In polling mode, use HAL_DFSDM_FilterPollForRegConversion() to detect
        the end of regular conversion.
    (#) In interrupt mode, HAL_DFSDM_FilterRegConvCpltCallback() will be called
        at the end of regular conversion.
    (#) Get value of regular conversion and corresponding channel using
        HAL_DFSDM_FilterGetRegularValue().
    (#) In DMA mode, HAL_DFSDM_FilterRegConvHalfCpltCallback() and
        HAL_DFSDM_FilterRegConvCpltCallback() will be called respectively at the
        half transfer and at the transfer complete. Please note that
        HAL_DFSDM_FilterRegConvHalfCpltCallback() will be called only in DMA
        circular mode.
    (#) Stop regular conversion using HAL_DFSDM_FilterRegularStop(),
        HAL_DFSDM_FilterRegularStop_IT() or HAL_DFSDM_FilterRegularStop_DMA().

  *** Filter injected channels conversion ***
  ===========================================
  [..]
    (#) Select injected channels using HAL_DFSDM_FilterConfigInjChannel().
    (#) Start injected conversion using HAL_DFSDM_FilterInjectedStart(),
        HAL_DFSDM_FilterInjectedStart_IT(), HAL_DFSDM_FilterInjectedStart_DMA() or
        HAL_DFSDM_FilterInjectedMsbStart_DMA().
    (#) In polling mode, use HAL_DFSDM_FilterPollForInjConversion() to detect
        the end of injected conversion.
    (#) In interrupt mode, HAL_DFSDM_FilterInjConvCpltCallback() will be called
        at the end of injected conversion.
    (#) Get value of injected conversion and corresponding channel using
        HAL_DFSDM_FilterGetInjectedValue().
    (#) In DMA mode, HAL_DFSDM_FilterInjConvHalfCpltCallback() and
        HAL_DFSDM_FilterInjConvCpltCallback() will be called respectively at the
        half transfer and at the transfer complete. Please note that
        HAL_DFSDM_FilterInjConvCpltCallback() will be called only in DMA
        circular mode.
    (#) Stop injected conversion using HAL_DFSDM_FilterInjectedStop(),
        HAL_DFSDM_FilterInjectedStop_IT() or HAL_DFSDM_FilterInjectedStop_DMA().

  *** Filter analog watchdog ***
  ==============================
  [..]
    (#) Start filter analog watchdog using HAL_DFSDM_FilterAwdStart_IT().
    (#) HAL_DFSDM_FilterAwdCallback() will be called if analog watchdog occurs.
    (#) Stop filter analog watchdog using HAL_DFSDM_FilterAwdStop_IT().

  *** Filter extreme detector ***
  ===============================
  [..]
    (#) Start filter extreme detector using HAL_DFSDM_FilterExdStart().
    (#) Get extreme detector maximum value using HAL_DFSDM_FilterGetExdMaxValue().
    (#) Get extreme detector minimum value using HAL_DFSDM_FilterGetExdMinValue().
    (#) Start filter extreme detector using HAL_DFSDM_FilterExdStop().

  *** Filter conversion time ***
  ==============================
  [..]
    (#) Get conversion time value using HAL_DFSDM_FilterGetConvTimeValue().

  *** Callback registration ***
  =============================
  [..]
  The compilation define USE_HAL_DFSDM_REGISTER_CALLBACKS when set to 1
  allows the user to configure dynamically the driver callbacks.
  Use functions HAL_DFSDM_Channel_RegisterCallback(),
  HAL_DFSDM_Filter_RegisterCallback() or
  HAL_DFSDM_Filter_RegisterAwdCallback() to register a user callback.

  [..]
  Function HAL_DFSDM_Channel_RegisterCallback() allows to register
  following callbacks:
    (+) CkabCallback      : DFSDM channel clock absence detection callback.
    (+) ScdCallback       : DFSDM channel short circuit detection callback.
    (+) MspInitCallback   : DFSDM channel MSP init callback.
    (+) MspDeInitCallback : DFSDM channel MSP de-init callback.
  [..]
  This function takes as parameters the HAL peripheral handle, the Callback ID
  and a pointer to the user callback function.

  [..]
  Function HAL_DFSDM_Filter_RegisterCallback() allows to register
  following callbacks:
    (+) RegConvCpltCallback     : DFSDM filter regular conversion complete callback.
    (+) RegConvHalfCpltCallback : DFSDM filter half regular conversion complete callback.
    (+) InjConvCpltCallback     : DFSDM filter injected conversion complete callback.
    (+) InjConvHalfCpltCallback : DFSDM filter half injected conversion complete callback.
    (+) ErrorCallback           : DFSDM filter error callback.
    (+) MspInitCallback         : DFSDM filter MSP init callback.
    (+) MspDeInitCallback       : DFSDM filter MSP de-init callback.
  [..]
  This function takes as parameters the HAL peripheral handle, the Callback ID
  and a pointer to the user callback function.

  [..]
  For specific DFSDM filter analog watchdog callback use dedicated register callback:
  HAL_DFSDM_Filter_RegisterAwdCallback().

  [..]
  Use functions HAL_DFSDM_Channel_UnRegisterCallback() or
  HAL_DFSDM_Filter_UnRegisterCallback() to reset a callback to the default
  weak function.

  [..]
  HAL_DFSDM_Channel_UnRegisterCallback() takes as parameters the HAL peripheral handle,
  and the Callback ID.
  [..]
  This function allows to reset following callbacks:
    (+) CkabCallback      : DFSDM channel clock absence detection callback.
    (+) ScdCallback       : DFSDM channel short circuit detection callback.
    (+) MspInitCallback   : DFSDM channel MSP init callback.
    (+) MspDeInitCallback : DFSDM channel MSP de-init callback.

  [..]
  HAL_DFSDM_Filter_UnRegisterCallback() takes as parameters the HAL peripheral handle,
  and the Callback ID.
  [..]
  This function allows to reset following callbacks:
    (+) RegConvCpltCallback     : DFSDM filter regular conversion complete callback.
    (+) RegConvHalfCpltCallback : DFSDM filter half regular conversion complete callback.
    (+) InjConvCpltCallback     : DFSDM filter injected conversion complete callback.
    (+) InjConvHalfCpltCallback : DFSDM filter half injected conversion complete callback.
    (+) ErrorCallback           : DFSDM filter error callback.
    (+) MspInitCallback         : DFSDM filter MSP init callback.
    (+) MspDeInitCallback       : DFSDM filter MSP de-init callback.

  [..]
  For specific DFSDM filter analog watchdog callback use dedicated unregister callback:
  HAL_DFSDM_Filter_UnRegisterAwdCallback().

  [..]
  By default, after the call of init function and if the state is RESET
  all callbacks are reset to the corresponding legacy weak functions:
  examples HAL_DFSDM_ChannelScdCallback(), HAL_DFSDM_FilterErrorCallback().
  Exception done for MspInit and MspDeInit callbacks that are respectively
  reset to the legacy weak functions in the init and de-init only when these
  callbacks are null (not registered beforehand).
  If not, MspInit or MspDeInit are not null, the init and de-init keep and use
  the user MspInit/MspDeInit callbacks (registered beforehand)

  [..]
  Callbacks can be registered/unregistered in READY state only.
  Exception done for MspInit/MspDeInit callbacks that can be registered/unregistered
  in READY or RESET state, thus registered (user) MspInit/DeInit callbacks can be used
  during the init/de-init.
  In that case first register the MspInit/MspDeInit user callbacks using
  HAL_DFSDM_Channel_RegisterCallback() or
  HAL_DFSDM_Filter_RegisterCallback() before calling init or de-init function.

  [..]
  When The compilation define USE_HAL_DFSDM_REGISTER_CALLBACKS is set to 0 or
  not defined, the callback registering feature is not available
  and weak callbacks are used.

Definition in file stm32f4xx_hal_dfsdm.c.

Functions

Variables

Detailed Description