view Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dfsdm.c @ 708:7e3bf2c0cd40

Menu cleanup rebreather specific settings: In the previous version the selection for Fix setpoint or sensor was in the deco menu and the Fallback option in the hardware menu. As they have a dependency and are only relevant for rebreather operation, they have been moved into the extra menu which is containing rebreather related data and which is only visible in rebreather mode.
author Ideenmodellierer
date Thu, 03 Nov 2022 20:44:51 +0100
parents c78bcbd5deda
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_dfsdm.c
  * @author  MCD Application Team
  * @brief   This file provides firmware functions to manage the following 
  *          functionalities of the Digital Filter for Sigma-Delta Modulators
  *          (DFSDM) peripherals:
  *           + 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
  *         
  @verbatim
  ==============================================================================
                     ##### 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().

    @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */
#ifdef HAL_DFSDM_MODULE_ENABLED
#if defined(STM32F412Zx) || defined(STM32F412Vx) || defined(STM32F412Rx) || defined(STM32F412Cx) || defined(STM32F413xx) || defined(STM32F423xx)
/** @defgroup DFSDM DFSDM
  * @brief DFSDM HAL driver module
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup DFSDM_Private_Define DFSDM Private Define
 * @{
 */

#define DFSDM_FLTCR1_MSB_RCH_OFFSET     8U

#define DFSDM_MSB_MASK                  0xFFFF0000U
#define DFSDM_LSB_MASK                  0x0000FFFFU
#define DFSDM_CKAB_TIMEOUT              5000U
#define DFSDM1_CHANNEL_NUMBER           4U
#if defined (DFSDM2_Channel0)
#define DFSDM2_CHANNEL_NUMBER           8U
#endif /* DFSDM2_Channel0 */

/**
  * @}
  */
/** @addtogroup DFSDM_Private_Macros 
* @{
*/

/**
  * @}
  */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/** @defgroup DFSDM_Private_Variables DFSDM Private Variables
  * @{
  */
__IO uint32_t                v_dfsdm1ChannelCounter = 0U;
DFSDM_Channel_HandleTypeDef* a_dfsdm1ChannelHandle[DFSDM1_CHANNEL_NUMBER] = {NULL};

#if defined (DFSDM2_Channel0)
__IO uint32_t                v_dfsdm2ChannelCounter = 0U;
DFSDM_Channel_HandleTypeDef* a_dfsdm2ChannelHandle[DFSDM2_CHANNEL_NUMBER] = {NULL};
#endif   /* DFSDM2_Channel0 */
/**
  * @}
  */

/* Private function prototypes -----------------------------------------------*/
/** @defgroup DFSDM_Private_Functions DFSDM Private Functions
  * @{
  */
static uint32_t DFSDM_GetInjChannelsNbr(uint32_t Channels);
static uint32_t DFSDM_GetChannelFromInstance(DFSDM_Channel_TypeDef* Instance);
static void     DFSDM_RegConvStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter);
static void     DFSDM_RegConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter);
static void     DFSDM_InjConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter);
static void     DFSDM_InjConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter);
static void     DFSDM_DMARegularHalfConvCplt(DMA_HandleTypeDef *hdma);
static void     DFSDM_DMARegularConvCplt(DMA_HandleTypeDef *hdma);
static void     DFSDM_DMAInjectedHalfConvCplt(DMA_HandleTypeDef *hdma);
static void     DFSDM_DMAInjectedConvCplt(DMA_HandleTypeDef *hdma);
static void     DFSDM_DMAError(DMA_HandleTypeDef *hdma);

/**
  * @}
  */

/* Exported functions --------------------------------------------------------*/
/** @defgroup DFSDM_Exported_Functions DFSDM Exported Functions
  * @{
  */

/** @defgroup DFSDM_Exported_Functions_Group1_Channel Channel initialization and de-initialization functions
 *  @brief    Channel initialization and de-initialization functions 
 *
@verbatim
  ==============================================================================
        ##### Channel initialization and de-initialization functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Initialize the DFSDM channel.
      (+) De-initialize the DFSDM channel.
@endverbatim
  * @{
  */

/**
  * @brief  Initialize the DFSDM channel according to the specified parameters
  *         in the DFSDM_ChannelInitTypeDef structure and initialize the associated handle.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
#if defined(DFSDM2_Channel0)
  __IO uint32_t*               channelCounterPtr;
  DFSDM_Channel_HandleTypeDef  **channelHandleTable;
  DFSDM_Channel_TypeDef*       channel0Instance;
#endif /* defined(DFSDM2_Channel0) */
  
  /* Check DFSDM Channel handle */
  if(hdfsdm_channel == NULL)
  {
    return HAL_ERROR;
  }

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  assert_param(IS_FUNCTIONAL_STATE(hdfsdm_channel->Init.OutputClock.Activation));
  assert_param(IS_DFSDM_CHANNEL_INPUT(hdfsdm_channel->Init.Input.Multiplexer));
  assert_param(IS_DFSDM_CHANNEL_DATA_PACKING(hdfsdm_channel->Init.Input.DataPacking));
  assert_param(IS_DFSDM_CHANNEL_INPUT_PINS(hdfsdm_channel->Init.Input.Pins));
  assert_param(IS_DFSDM_CHANNEL_SERIAL_INTERFACE_TYPE(hdfsdm_channel->Init.SerialInterface.Type));
  assert_param(IS_DFSDM_CHANNEL_SPI_CLOCK(hdfsdm_channel->Init.SerialInterface.SpiClock));
  assert_param(IS_DFSDM_CHANNEL_FILTER_ORDER(hdfsdm_channel->Init.Awd.FilterOrder));
  assert_param(IS_DFSDM_CHANNEL_FILTER_OVS_RATIO(hdfsdm_channel->Init.Awd.Oversampling));
  assert_param(IS_DFSDM_CHANNEL_OFFSET(hdfsdm_channel->Init.Offset));
  assert_param(IS_DFSDM_CHANNEL_RIGHT_BIT_SHIFT(hdfsdm_channel->Init.RightBitShift));
  
#if defined(DFSDM2_Channel0)
  /* Get channel counter, channel handle table and channel 0 instance */
  if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
  {
    channelCounterPtr  = &v_dfsdm1ChannelCounter;
    channelHandleTable =  a_dfsdm1ChannelHandle;
    channel0Instance   = DFSDM1_Channel0;
  }
  else
  {
    channelCounterPtr  = &v_dfsdm2ChannelCounter;
    channelHandleTable = a_dfsdm2ChannelHandle;
    channel0Instance   = DFSDM2_Channel0;
  }
  
  /* Check that channel has not been already initialized */
  if(channelHandleTable[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] != NULL)
  {
    return HAL_ERROR;
  }
  
  /* Call MSP init function */
  HAL_DFSDM_ChannelMspInit(hdfsdm_channel);
  
  /* Update the channel counter */
  (*channelCounterPtr)++;
  
  /* Configure output serial clock and enable global DFSDM interface only for first channel */
  if(*channelCounterPtr == 1U)
  {
    assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK(hdfsdm_channel->Init.OutputClock.Selection));
    /* Set the output serial clock source */
    channel0Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTSRC);
    channel0Instance->CHCFGR1 |= hdfsdm_channel->Init.OutputClock.Selection;
    
    /* Reset clock divider */
    channel0Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTDIV);
    if(hdfsdm_channel->Init.OutputClock.Activation == ENABLE)
    {
      assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK_DIVIDER(hdfsdm_channel->Init.OutputClock.Divider));
      /* Set the output clock divider */
      channel0Instance->CHCFGR1 |= (uint32_t) ((hdfsdm_channel->Init.OutputClock.Divider - 1U) << 
                                               DFSDM_CHCFGR1_CKOUTDIV_Pos);
    }
    
    /* enable the DFSDM global interface */
    channel0Instance->CHCFGR1 |= DFSDM_CHCFGR1_DFSDMEN;
  }
  
  /* Set channel input parameters */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_DATPACK | DFSDM_CHCFGR1_DATMPX | 
                                         DFSDM_CHCFGR1_CHINSEL);
  hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.Input.Multiplexer | 
                                        hdfsdm_channel->Init.Input.DataPacking | 
                                        hdfsdm_channel->Init.Input.Pins);
  
  /* Set serial interface parameters */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SITP | DFSDM_CHCFGR1_SPICKSEL);
  hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.SerialInterface.Type | 
                                        hdfsdm_channel->Init.SerialInterface.SpiClock);
  
  /* Set analog watchdog parameters */
  hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_AWFORD | DFSDM_CHAWSCDR_AWFOSR);
  hdfsdm_channel->Instance->CHAWSCDR |= (hdfsdm_channel->Init.Awd.FilterOrder | 
                                       ((hdfsdm_channel->Init.Awd.Oversampling - 1U) << DFSDM_CHAWSCDR_AWFOSR_Pos));

  /* Set channel offset and right bit shift */
  hdfsdm_channel->Instance->CHCFGR2 &= ~(DFSDM_CHCFGR2_OFFSET | DFSDM_CHCFGR2_DTRBS);
  hdfsdm_channel->Instance->CHCFGR2 |= (((uint32_t) hdfsdm_channel->Init.Offset << DFSDM_CHCFGR2_OFFSET_Pos) | 
                                        (hdfsdm_channel->Init.RightBitShift << DFSDM_CHCFGR2_DTRBS_Pos));

  /* Enable DFSDM channel */
  hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CHEN;
  
  /* Set DFSDM Channel to ready state */
  hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_READY;

  /* Store channel handle in DFSDM channel handle table */
  channelHandleTable[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] = hdfsdm_channel;
  
#else
  /* Check that channel has not been already initialized */
  if(a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] != NULL)
  {
    return HAL_ERROR;
  }
  
  /* Call MSP init function */
  HAL_DFSDM_ChannelMspInit(hdfsdm_channel);
  
  /* Update the channel counter */
  v_dfsdm1ChannelCounter++;
  
  /* Configure output serial clock and enable global DFSDM interface only for first channel */
  if(v_dfsdm1ChannelCounter == 1U)
  {
    assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK(hdfsdm_channel->Init.OutputClock.Selection));
    /* Set the output serial clock source */
    DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTSRC);
    DFSDM1_Channel0->CHCFGR1 |= hdfsdm_channel->Init.OutputClock.Selection;
    
    /* Reset clock divider */
    DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKOUTDIV);
    if(hdfsdm_channel->Init.OutputClock.Activation == ENABLE)
    {
      assert_param(IS_DFSDM_CHANNEL_OUTPUT_CLOCK_DIVIDER(hdfsdm_channel->Init.OutputClock.Divider));
      /* Set the output clock divider */
      DFSDM1_Channel0->CHCFGR1 |= (uint32_t) ((hdfsdm_channel->Init.OutputClock.Divider - 1U) << 
                                             DFSDM_CHCFGR1_CKOUTDIV_Pos);
    }
    
    /* enable the DFSDM global interface */
    DFSDM1_Channel0->CHCFGR1 |= DFSDM_CHCFGR1_DFSDMEN;
  }
  
  /* Set channel input parameters */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_DATPACK | DFSDM_CHCFGR1_DATMPX | 
                                         DFSDM_CHCFGR1_CHINSEL);
  hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.Input.Multiplexer | 
                                        hdfsdm_channel->Init.Input.DataPacking | 
                                        hdfsdm_channel->Init.Input.Pins);
  
  /* Set serial interface parameters */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SITP | DFSDM_CHCFGR1_SPICKSEL);
  hdfsdm_channel->Instance->CHCFGR1 |= (hdfsdm_channel->Init.SerialInterface.Type | 
                                        hdfsdm_channel->Init.SerialInterface.SpiClock);
  
  /* Set analog watchdog parameters */
  hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_AWFORD | DFSDM_CHAWSCDR_AWFOSR);
  hdfsdm_channel->Instance->CHAWSCDR |= (hdfsdm_channel->Init.Awd.FilterOrder | 
                                       ((hdfsdm_channel->Init.Awd.Oversampling - 1U) << DFSDM_CHAWSCDR_AWFOSR_Pos));

  /* Set channel offset and right bit shift */
  hdfsdm_channel->Instance->CHCFGR2 &= ~(DFSDM_CHCFGR2_OFFSET | DFSDM_CHCFGR2_DTRBS);
  hdfsdm_channel->Instance->CHCFGR2 |= (((uint32_t) hdfsdm_channel->Init.Offset << DFSDM_CHCFGR2_OFFSET_Pos) | 
                                        (hdfsdm_channel->Init.RightBitShift << DFSDM_CHCFGR2_DTRBS_Pos));

  /* Enable DFSDM channel */
  hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CHEN;
  
  /* Set DFSDM Channel to ready state */
  hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_READY;

  /* Store channel handle in DFSDM channel handle table */
  a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] = hdfsdm_channel;
#endif /* DFSDM2_Channel0 */
  
  return HAL_OK;
}

/**
  * @brief  De-initialize the DFSDM channel.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{  
#if defined(DFSDM2_Channel0)
  __IO uint32_t*                    channelCounterPtr;
  DFSDM_Channel_HandleTypeDef  **channelHandleTable;
  DFSDM_Channel_TypeDef*       channel0Instance;
#endif /* defined(DFSDM2_Channel0) */
  
  /* Check DFSDM Channel handle */
  if(hdfsdm_channel == NULL)
  {
    return HAL_ERROR;
  }

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
#if defined(DFSDM2_Channel0)
  /* Get channel counter, channel handle table and channel 0 instance */
  if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
  {
    channelCounterPtr  = &v_dfsdm1ChannelCounter;
    channelHandleTable =  a_dfsdm1ChannelHandle;
    channel0Instance   = DFSDM1_Channel0;
  }
  else
  {
    channelCounterPtr  = &v_dfsdm2ChannelCounter;
    channelHandleTable =  a_dfsdm2ChannelHandle;
    channel0Instance   = DFSDM2_Channel0;
  }
  
  /* Check that channel has not been already deinitialized */
  if(channelHandleTable[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] == NULL)
  {
    return HAL_ERROR;
  }

  /* Disable the DFSDM channel */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CHEN);
  
  /* Update the channel counter */
  (*channelCounterPtr)--;
  
  /* Disable global DFSDM at deinit of last channel */
  if(*channelCounterPtr == 0U)
  {
    channel0Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_DFSDMEN);
  }

  /* Call MSP deinit function */
  HAL_DFSDM_ChannelMspDeInit(hdfsdm_channel);

  /* Set DFSDM Channel in reset state */
  hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_RESET;

  /* Reset channel handle in DFSDM channel handle table */
  channelHandleTable[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] =  NULL;
#else
  /* Check that channel has not been already deinitialized */
  if(a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] == NULL)
  {
    return HAL_ERROR;
  }

  /* Disable the DFSDM channel */
  hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CHEN);
  
  /* Update the channel counter */
  v_dfsdm1ChannelCounter--;
  
  /* Disable global DFSDM at deinit of last channel */
  if(v_dfsdm1ChannelCounter == 0U)
  {
    DFSDM1_Channel0->CHCFGR1 &= ~(DFSDM_CHCFGR1_DFSDMEN);
  }

  /* Call MSP deinit function */
  HAL_DFSDM_ChannelMspDeInit(hdfsdm_channel);

  /* Set DFSDM Channel in reset state */
  hdfsdm_channel->State = HAL_DFSDM_CHANNEL_STATE_RESET;

  /* Reset channel handle in DFSDM channel handle table */
  a_dfsdm1ChannelHandle[DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance)] = (DFSDM_Channel_HandleTypeDef *) NULL;
#endif /* defined(DFSDM2_Channel0) */

  return HAL_OK;
}

/**
  * @brief  Initialize the DFSDM channel MSP.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval None
  */
__weak void HAL_DFSDM_ChannelMspInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_channel);
  /* NOTE : This function should not be modified, when the function is needed,
            the HAL_DFSDM_ChannelMspInit could be implemented in the user file.
   */
}

/**
  * @brief  De-initialize the DFSDM channel MSP.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval None
  */
__weak void HAL_DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_channel);
  /* NOTE : This function should not be modified, when the function is needed,
            the HAL_DFSDM_ChannelMspDeInit could be implemented in the user file.
   */
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group2_Channel Channel operation functions
 *  @brief    Channel operation functions
 *
@verbatim
  ==============================================================================
                   ##### Channel operation functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Manage clock absence detector feature.
      (+) Manage short circuit detector feature.
      (+) Get analog watchdog value.
      (+) Modify offset value.
@endverbatim
  * @{
  */

/**
  * @brief  This function allows to start clock absence detection in polling mode.
  * @note   Same mode has to be used for all channels.
  * @note   If clock is not available on this channel during 5 seconds,
  *         clock absence detection will not be activated and function
  *         will return HAL_TIMEOUT error.  
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStart(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t tickstart;
  uint32_t channel;

#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
#if defined (DFSDM2_Channel0)
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }   
    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);

    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Clear clock absence flag */
    while((((filter0Instance->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) != 0U)
    {
      filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

      /* Check the Timeout */
      if((HAL_GetTick()-tickstart) > DFSDM_CKAB_TIMEOUT)
      {
        /* Set timeout status */
        status = HAL_TIMEOUT;
        break;
      }
    }
#else
    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);

    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Clear clock absence flag */
    while((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) != 0U)
    {
      DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

      /* Check the Timeout */
      if((HAL_GetTick()-tickstart) > DFSDM_CKAB_TIMEOUT)
      {
        /* Set timeout status */
        status = HAL_TIMEOUT;
        break;
      }
    }
#endif /* DFSDM2_Channel0 */    

    if(status == HAL_OK)
    {
      /* Start clock absence detection */
      hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CKABEN;
    }
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to poll for the clock absence detection.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @param  Timeout Timeout value in milliseconds.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelPollForCkab(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, 
                                               uint32_t Timeout)
{
  uint32_t tickstart;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */
  
  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));

  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    return HAL_ERROR;
  }
  else
  {
#if defined(DFSDM2_Channel0)
    
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }

    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    
    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Wait clock absence detection */
    while((((filter0Instance->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) == 0U)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }
    
    /* Clear clock absence detection flag */
    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));   
#else    
    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    
    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Wait clock absence detection */
    while((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) == 0U)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }
    
    /* Clear clock absence detection flag */
    DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));
#endif /* defined(DFSDM2_Channel0) */    
    /* Return function status */
    return HAL_OK;
  }
}

/**
  * @brief  This function allows to stop clock absence detection in polling mode.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStop(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
#if defined(DFSDM2_Channel0)

    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    } 

    /* Stop clock absence detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN);

    /* Clear clock absence flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

#else
    /* Stop clock absence detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN);
    
    /* Clear clock absence flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));
#endif /* DFSDM2_Channel0 */    
  }
  /* Return function status */
  return status;
}
 
/**
  * @brief  This function allows to start clock absence detection in interrupt mode.
  * @note   Same mode has to be used for all channels.
  * @note   If clock is not available on this channel during 5 seconds,
  *         clock absence detection will not be activated and function
  *         will return HAL_TIMEOUT error.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStart_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t channel;
  uint32_t tickstart;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
#if defined(DFSDM2_Channel0)

    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }

    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);

    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Clear clock absence flag */
    while((((filter0Instance->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) != 0U)
    {
      filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

      /* Check the Timeout */
      if((HAL_GetTick()-tickstart) > DFSDM_CKAB_TIMEOUT)
      {
        /* Set timeout status */
        status = HAL_TIMEOUT;
        break;
      }
    }

    if(status == HAL_OK)
    {
      /* Activate clock absence detection interrupt */
      filter0Instance->FLTCR2 |= DFSDM_FLTCR2_CKABIE;

      /* Start clock absence detection */
      hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CKABEN;
    }
#else  
    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);

    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Clear clock absence flag */
    while((((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_CKABF) >> (DFSDM_FLTISR_CKABF_Pos + channel)) & 1U) != 0U)
    {
      DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

      /* Check the Timeout */
      if((HAL_GetTick()-tickstart) > DFSDM_CKAB_TIMEOUT)
      {
        /* Set timeout status */
        status = HAL_TIMEOUT;
        break;
      }
    }

    if(status == HAL_OK)
    {
      /* Activate clock absence detection interrupt */
      DFSDM1_Filter0->FLTCR2 |= DFSDM_FLTCR2_CKABIE;

      /* Start clock absence detection */
      hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_CKABEN;
    }

#endif /* defined(DFSDM2_Channel0) */ 
  }
  /* Return function status */
  return status;
}

/**
  * @brief  Clock absence detection callback. 
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval None
  */
__weak void HAL_DFSDM_ChannelCkabCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_channel);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_ChannelCkabCallback could be implemented in the user file
   */
}

/**
  * @brief  This function allows to stop clock absence detection in interrupt mode.
  * @note   Interrupt will be disabled for all channels
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelCkabStop_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
#if defined(DFSDM2_Channel0)

    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    } 

    /* Stop clock absence detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN);

    /* Clear clock absence flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

    /* Disable clock absence detection interrupt */
    filter0Instance->FLTCR2 &= ~(DFSDM_FLTCR2_CKABIE); 
#else

    /* Stop clock absence detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_CKABEN);
    
    /* Clear clock absence flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

    /* Disable clock absence detection interrupt */
    DFSDM1_Filter0->FLTCR2 &= ~(DFSDM_FLTCR2_CKABIE);
#endif /* DFSDM2_Channel0 */
  }

  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start short circuit detection in polling mode.
  * @note   Same mode has to be used for all channels
  * @param  hdfsdm_channel DFSDM channel handle.
  * @param  Threshold Short circuit detector threshold.
  *         This parameter must be a number between Min_Data = 0 and Max_Data = 255.
  * @param  BreakSignal Break signals assigned to short circuit event.
  *         This parameter can be a values combination of @ref DFSDM_BreakSignals.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelScdStart(DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
                                            uint32_t Threshold,
                                            uint32_t BreakSignal)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  assert_param(IS_DFSDM_CHANNEL_SCD_THRESHOLD(Threshold));
  assert_param(IS_DFSDM_BREAK_SIGNALS(BreakSignal));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Configure threshold and break signals */
    hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_BKSCD | DFSDM_CHAWSCDR_SCDT);
    hdfsdm_channel->Instance->CHAWSCDR |= ((BreakSignal << DFSDM_CHAWSCDR_BKSCD_Pos) | \
                                         Threshold);
    
    /* Start short circuit detection */
    hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_SCDEN;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to poll for the short circuit detection.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @param  Timeout Timeout value in milliseconds.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelPollForScd(DFSDM_Channel_HandleTypeDef *hdfsdm_channel, 
                                              uint32_t Timeout)
{
  uint32_t tickstart;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */
  
  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));

  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    return HAL_ERROR;
  }
  else
  {
    /* Get channel number from channel instance */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);

#if defined(DFSDM2_Channel0)
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }

   /* Get timeout */
    tickstart = HAL_GetTick();

    /* Wait short circuit detection */
    while(((filter0Instance->FLTISR & DFSDM_FLTISR_SCDF) >> (DFSDM_FLTISR_SCDF_Pos + channel)) == 0U)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }
    
    /* Clear short circuit detection flag */
    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));

#else
    /* Get timeout */
    tickstart = HAL_GetTick();

    /* Wait short circuit detection */
    while(((DFSDM1_Filter0->FLTISR & DFSDM_FLTISR_SCDF) >> (DFSDM_FLTISR_SCDF_Pos + channel)) == 0U)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }

    /* Clear short circuit detection flag */
    DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));
#endif /* DFSDM2_Channel0 */ 

    /* Return function status */
    return HAL_OK;
  }
}

/**
  * @brief  This function allows to stop short circuit detection in polling mode.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */  

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop short circuit detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SCDEN);

    /* Clear short circuit detection flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
    
#if defined(DFSDM2_Channel0)
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }

    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));
#else
    DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));
#endif /* DFSDM2_Channel0*/
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start short circuit detection in interrupt mode.
  * @note   Same mode has to be used for all channels
  * @param  hdfsdm_channel DFSDM channel handle.
  * @param  Threshold Short circuit detector threshold.
  *         This parameter must be a number between Min_Data = 0 and Max_Data = 255.
  * @param  BreakSignal Break signals assigned to short circuit event.
  *         This parameter can be a values combination of @ref DFSDM_BreakSignals.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelScdStart_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
                                               uint32_t Threshold,
                                               uint32_t BreakSignal)
{
  HAL_StatusTypeDef status = HAL_OK;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */ 
  
  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  assert_param(IS_DFSDM_CHANNEL_SCD_THRESHOLD(Threshold));
  assert_param(IS_DFSDM_BREAK_SIGNALS(BreakSignal));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
#if defined(DFSDM2_Channel0)
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }
    /* Activate short circuit detection interrupt */
    filter0Instance->FLTCR2 |= DFSDM_FLTCR2_SCDIE;
#else
    /* Activate short circuit detection interrupt */
    DFSDM1_Filter0->FLTCR2 |= DFSDM_FLTCR2_SCDIE;
#endif /* DFSDM2_Channel0 */

    /* Configure threshold and break signals */
    hdfsdm_channel->Instance->CHAWSCDR &= ~(DFSDM_CHAWSCDR_BKSCD | DFSDM_CHAWSCDR_SCDT);
    hdfsdm_channel->Instance->CHAWSCDR |= ((BreakSignal << DFSDM_CHAWSCDR_BKSCD_Pos) | \
                                         Threshold);
    
    /* Start short circuit detection */
    hdfsdm_channel->Instance->CHCFGR1 |= DFSDM_CHCFGR1_SCDEN;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  Short circuit detection callback. 
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval None
  */
__weak void HAL_DFSDM_ChannelScdCallback(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_channel);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_ChannelScdCallback could be implemented in the user file
   */
}

/**
  * @brief  This function allows to stop short circuit detection in interrupt mode.
  * @note   Interrupt will be disabled for all channels
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelScdStop_IT(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t channel;
#if defined(DFSDM2_Channel0)
  DFSDM_Filter_TypeDef*       filter0Instance;
#endif /* defined(DFSDM2_Channel0) */

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop short circuit detection */
    hdfsdm_channel->Instance->CHCFGR1 &= ~(DFSDM_CHCFGR1_SCDEN);
    
    /* Clear short circuit detection flag */
    channel = DFSDM_GetChannelFromInstance(hdfsdm_channel->Instance);
#if defined(DFSDM2_Channel0)
    /* Get channel counter, channel handle table and channel 0 instance */
    if(IS_DFSDM1_CHANNEL_INSTANCE(hdfsdm_channel->Instance))
    {
      filter0Instance   = DFSDM1_Filter0;
    }
    else
    {
      filter0Instance   = DFSDM2_Filter0;
    }

    filter0Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));

    /* Disable short circuit detection interrupt */
    filter0Instance->FLTCR2 &= ~(DFSDM_FLTCR2_SCDIE);
#else
   DFSDM1_Filter0->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));

    /* Disable short circuit detection interrupt */
    DFSDM1_Filter0->FLTCR2 &= ~(DFSDM_FLTCR2_SCDIE);
#endif /* DFSDM2_Channel0 */
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to get channel analog watchdog value.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval Channel analog watchdog value.
  */
int16_t HAL_DFSDM_ChannelGetAwdValue(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  return (int16_t) hdfsdm_channel->Instance->CHWDATAR;
}

/**
  * @brief  This function allows to modify channel offset value.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @param  Offset DFSDM channel offset.
  *         This parameter must be a number between Min_Data = -8388608 and Max_Data = 8388607.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_DFSDM_ChannelModifyOffset(DFSDM_Channel_HandleTypeDef *hdfsdm_channel,
                                                int32_t Offset)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_CHANNEL_ALL_INSTANCE(hdfsdm_channel->Instance));
  assert_param(IS_DFSDM_CHANNEL_OFFSET(Offset));
  
  /* Check DFSDM channel state */
  if(hdfsdm_channel->State != HAL_DFSDM_CHANNEL_STATE_READY)
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Modify channel offset */
    hdfsdm_channel->Instance->CHCFGR2 &= ~(DFSDM_CHCFGR2_OFFSET);
    hdfsdm_channel->Instance->CHCFGR2 |= ((uint32_t) Offset << DFSDM_CHCFGR2_OFFSET_Pos);
  }
  /* Return function status */
  return status;
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group3_Channel Channel state function
 *  @brief    Channel state function
 *
@verbatim
  ==============================================================================
                   ##### Channel state function #####
  ==============================================================================
    [..]  This section provides function allowing to:
      (+) Get channel handle state.
@endverbatim
  * @{
  */

/**
  * @brief  This function allows to get the current DFSDM channel handle state.
  * @param  hdfsdm_channel DFSDM channel handle.
  * @retval DFSDM channel state.
  */
HAL_DFSDM_Channel_StateTypeDef HAL_DFSDM_ChannelGetState(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
{
  /* Return DFSDM channel handle state */
  return hdfsdm_channel->State;
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group1_Filter Filter initialization and de-initialization functions
 *  @brief    Filter initialization and de-initialization functions 
 *
@verbatim
  ==============================================================================
        ##### Filter initialization and de-initialization functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Initialize the DFSDM filter.
      (+) De-initialize the DFSDM filter.
@endverbatim
  * @{
  */

/**
  * @brief  Initialize the DFSDM filter according to the specified parameters
  *         in the DFSDM_FilterInitTypeDef structure and initialize the associated handle.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Check DFSDM Channel handle */
  if(hdfsdm_filter == NULL)
  {
    return HAL_ERROR;
  }

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(IS_DFSDM_FILTER_REG_TRIGGER(hdfsdm_filter->Init.RegularParam.Trigger));
  assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.RegularParam.FastMode));
  assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.RegularParam.DmaMode));
  assert_param(IS_DFSDM_FILTER_INJ_TRIGGER(hdfsdm_filter->Init.InjectedParam.Trigger));
  assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.InjectedParam.ScanMode));
  assert_param(IS_FUNCTIONAL_STATE(hdfsdm_filter->Init.InjectedParam.DmaMode));
  assert_param(IS_DFSDM_FILTER_SINC_ORDER(hdfsdm_filter->Init.FilterParam.SincOrder));
  assert_param(IS_DFSDM_FILTER_OVS_RATIO(hdfsdm_filter->Init.FilterParam.Oversampling));
  assert_param(IS_DFSDM_FILTER_INTEGRATOR_OVS_RATIO(hdfsdm_filter->Init.FilterParam.IntOversampling));

  /* Check parameters compatibility */
  if((hdfsdm_filter->Instance == DFSDM1_Filter0) && 
    ((hdfsdm_filter->Init.RegularParam.Trigger  == DFSDM_FILTER_SYNC_TRIGGER) || 
     (hdfsdm_filter->Init.InjectedParam.Trigger == DFSDM_FILTER_SYNC_TRIGGER)))
  {
    return HAL_ERROR;
  }
#if defined (DFSDM2_Channel0)  
  if((hdfsdm_filter->Instance == DFSDM2_Filter0) && 
    ((hdfsdm_filter->Init.RegularParam.Trigger  == DFSDM_FILTER_SYNC_TRIGGER) || 
     (hdfsdm_filter->Init.InjectedParam.Trigger == DFSDM_FILTER_SYNC_TRIGGER)))
  {
    return HAL_ERROR;
  }  
#endif /* DFSDM2_Channel0 */
       
  /* Initialize DFSDM filter variables with default values */
  hdfsdm_filter->RegularContMode     = DFSDM_CONTINUOUS_CONV_OFF;
  hdfsdm_filter->InjectedChannelsNbr = 1U;
  hdfsdm_filter->InjConvRemaining    = 1U;
  hdfsdm_filter->ErrorCode           = DFSDM_FILTER_ERROR_NONE;
  
  /* Call MSP init function */
  HAL_DFSDM_FilterMspInit(hdfsdm_filter);

  /* Set regular parameters */
  hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RSYNC);
  if(hdfsdm_filter->Init.RegularParam.FastMode == ENABLE)
  {
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_FAST;
  }
  else
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_FAST);
  }

  if(hdfsdm_filter->Init.RegularParam.DmaMode == ENABLE)
  {
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RDMAEN;
  }
  else
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RDMAEN);
  }

  /* Set injected parameters */
  hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSYNC | DFSDM_FLTCR1_JEXTEN | DFSDM_FLTCR1_JEXTSEL);
  if(hdfsdm_filter->Init.InjectedParam.Trigger == DFSDM_FILTER_EXT_TRIGGER)
  {
    assert_param(IS_DFSDM_FILTER_EXT_TRIG(hdfsdm_filter->Init.InjectedParam.ExtTrigger));
    assert_param(IS_DFSDM_FILTER_EXT_TRIG_EDGE(hdfsdm_filter->Init.InjectedParam.ExtTriggerEdge));
    hdfsdm_filter->Instance->FLTCR1 |= (hdfsdm_filter->Init.InjectedParam.ExtTrigger);
  }

  if(hdfsdm_filter->Init.InjectedParam.ScanMode == ENABLE)
  {
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSCAN;
  }
  else
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSCAN);
  }

  if(hdfsdm_filter->Init.InjectedParam.DmaMode == ENABLE)
  {
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JDMAEN;
  }
  else
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JDMAEN);
  }
  
  /* Set filter parameters */
  hdfsdm_filter->Instance->FLTFCR &= ~(DFSDM_FLTFCR_FORD | DFSDM_FLTFCR_FOSR | DFSDM_FLTFCR_IOSR);
  hdfsdm_filter->Instance->FLTFCR |= (hdfsdm_filter->Init.FilterParam.SincOrder |
                                    ((hdfsdm_filter->Init.FilterParam.Oversampling - 1U) << DFSDM_FLTFCR_FOSR_Pos) |
                                     (hdfsdm_filter->Init.FilterParam.IntOversampling - 1U));

  /* Store regular and injected triggers and injected scan mode*/
  hdfsdm_filter->RegularTrigger   = hdfsdm_filter->Init.RegularParam.Trigger;
  hdfsdm_filter->InjectedTrigger  = hdfsdm_filter->Init.InjectedParam.Trigger;
  hdfsdm_filter->ExtTriggerEdge   = hdfsdm_filter->Init.InjectedParam.ExtTriggerEdge;
  hdfsdm_filter->InjectedScanMode = hdfsdm_filter->Init.InjectedParam.ScanMode;
  
  /* Enable DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN;

  /* Set DFSDM filter to ready state */
  hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_READY;
  
  return HAL_OK;
}

/**
  * @brief  De-initializes the DFSDM filter.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_DFSDM_FilterDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Check DFSDM filter handle */
  if(hdfsdm_filter == NULL)
  {
    return HAL_ERROR;
  }

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  
  /* Disable the DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN);
  
  /* Call MSP deinit function */
  HAL_DFSDM_FilterMspDeInit(hdfsdm_filter);

  /* Set DFSDM filter in reset state */
  hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_RESET;

  return HAL_OK;
}

/**
  * @brief  Initializes the DFSDM filter MSP.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the function is needed,
            the HAL_DFSDM_FilterMspInit could be implemented in the user file.
   */
}

/**
  * @brief  De-initializes the DFSDM filter MSP.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the function is needed,
            the HAL_DFSDM_FilterMspDeInit could be implemented in the user file.
   */
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group2_Filter Filter control functions
 *  @brief    Filter control functions
 *
@verbatim
  ==============================================================================
                    ##### Filter control functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Select channel and enable/disable continuous mode for regular conversion.
      (+) Select channels for injected conversion.
@endverbatim
  * @{
  */

/**
  * @brief  This function allows to select channel and to enable/disable
  *         continuous mode for regular conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Channel for regular conversion.
  *         This parameter can be a value of @ref DFSDM_Channel_Selection.
  * @param  ContinuousMode Enable/disable continuous mode for regular conversion.
  *         This parameter can be a value of @ref DFSDM_ContinuousMode.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterConfigRegChannel(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                   uint32_t                    Channel,
                                                   uint32_t                    ContinuousMode)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(IS_DFSDM_REGULAR_CHANNEL(Channel));
  assert_param(IS_DFSDM_CONTINUOUS_MODE(ContinuousMode));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_RESET) && 
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Configure channel and continuous mode for regular conversion */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RCH | DFSDM_FLTCR1_RCONT);
    if(ContinuousMode == DFSDM_CONTINUOUS_CONV_ON)
    {
      hdfsdm_filter->Instance->FLTCR1 |= (uint32_t) (((Channel & DFSDM_MSB_MASK) << DFSDM_FLTCR1_MSB_RCH_OFFSET) |
                                                     DFSDM_FLTCR1_RCONT);
    }
    else
    {
      hdfsdm_filter->Instance->FLTCR1 |= (uint32_t) ((Channel & DFSDM_MSB_MASK) << DFSDM_FLTCR1_MSB_RCH_OFFSET);
    }
    /* Store continuous mode information */
    hdfsdm_filter->RegularContMode = ContinuousMode;
  }  
  else
  {
    status = HAL_ERROR;
  }

  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to select channels for injected conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Channels for injected conversion.
  *         This parameter can be a values combination of @ref DFSDM_Channel_Selection.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterConfigInjChannel(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                   uint32_t                    Channel)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(IS_DFSDM_INJECTED_CHANNEL(Channel));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_RESET) && 
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Configure channel for injected conversion */
    hdfsdm_filter->Instance->FLTJCHGR = (uint32_t) (Channel & DFSDM_LSB_MASK);
    /* Store number of injected channels */
    hdfsdm_filter->InjectedChannelsNbr = DFSDM_GetInjChannelsNbr(Channel);
    /* Update number of injected channels remaining */
    hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                      hdfsdm_filter->InjectedChannelsNbr : 1U;
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group3_Filter Filter operation functions
 *  @brief    Filter operation functions
 *
@verbatim
  ==============================================================================
                    ##### Filter operation functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Start conversion of regular/injected channel.
      (+) Poll for the end of regular/injected conversion.
      (+) Stop conversion of regular/injected channel.
      (+) Start conversion of regular/injected channel and enable interrupt.
      (+) Call the callback functions at the end of regular/injected conversions.
      (+) Stop conversion of regular/injected channel and disable interrupt.
      (+) Start conversion of regular/injected channel and enable DMA transfer.
      (+) Stop conversion of regular/injected channel and disable DMA transfer.
      (+) Start analog watchdog and enable interrupt.
      (+) Call the callback function when analog watchdog occurs.
      (+) Stop analog watchdog and disable interrupt.
      (+) Start extreme detector.
      (+) Stop extreme detector.
      (+) Get result of regular channel conversion.
      (+) Get result of injected channel conversion.
      (+) Get extreme detector maximum and minimum values.
      (+) Get conversion time.
      (+) Handle DFSDM interrupt request.
@endverbatim
  * @{
  */

/**
  * @brief  This function allows to start regular conversion in polling mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ))
  {
    /* Start regular conversion */
    DFSDM_RegConvStart(hdfsdm_filter);
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to poll for the end of regular conversion.
  * @note   This function should be called only if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Timeout Timeout value in milliseconds.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterPollForRegConversion(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                       uint32_t                    Timeout)
{
  uint32_t tickstart;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    return HAL_ERROR;
  }
  else
  {
    /* Get timeout */
    tickstart = HAL_GetTick();  

    /* Wait end of regular conversion */
    while((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_REOCF) != DFSDM_FLTISR_REOCF)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }
    /* Check if overrun occurs */
    if((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_ROVRF) == DFSDM_FLTISR_ROVRF)
    {
      /* Update error code and call error callback */
      hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_REGULAR_OVERRUN;
      HAL_DFSDM_FilterErrorCallback(hdfsdm_filter);

      /* Clear regular overrun flag */
      hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRROVRF;
    }
    /* Update DFSDM filter state only if not continuous conversion and SW trigger */
    if((hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
       (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER))
    {
      hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \
                             HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ;
    }
    /* Return function status */
    return HAL_OK;
  }
}

/**
  * @brief  This function allows to stop regular conversion in polling mode.
  * @note   This function should be called only if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop regular conversion */
    DFSDM_RegConvStop(hdfsdm_filter);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start regular conversion in interrupt mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ))
  {
    /* Enable interrupts for regular conversions */
    hdfsdm_filter->Instance->FLTCR2 |= (DFSDM_FLTCR2_REOCIE | DFSDM_FLTCR2_ROVRIE);
    
    /* Start regular conversion */
    DFSDM_RegConvStart(hdfsdm_filter);
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop regular conversion in interrupt mode.
  * @note   This function should be called only if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Disable interrupts for regular conversions */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_REOCIE | DFSDM_FLTCR2_ROVRIE);
    
    /* Stop regular conversion */
    DFSDM_RegConvStop(hdfsdm_filter);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start regular conversion in DMA mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if injected conversion is ongoing.
  *         Please note that data on buffer will contain signed regular conversion
  *         value on 24 most significant bits and corresponding channel on 3 least
  *         significant bits.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  pData The destination buffer address.
  * @param  Length The length of data to be transferred from DFSDM filter to memory.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                   int32_t                    *pData,
                                                   uint32_t                    Length)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check destination address and length */
  if((pData == NULL) || (Length == 0U))
  {
    status = HAL_ERROR;
  }
  /* Check that DMA is enabled for regular conversion */
  else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_RDMAEN) != DFSDM_FLTCR1_RDMAEN)
  {
    status = HAL_ERROR;
  }
  /* Check parameters compatibility */
  else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
          (hdfsdm_filter->hdmaReg->Init.Mode == DMA_NORMAL) && \
          (Length != 1U))
  {
    status = HAL_ERROR;
  }
  else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
          (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR))
  {
    status = HAL_ERROR;
  }
  /* Check DFSDM filter state */
  else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
          (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ))
  {
    /* Set callbacks on DMA handler */
    hdfsdm_filter->hdmaReg->XferCpltCallback = DFSDM_DMARegularConvCplt;
    hdfsdm_filter->hdmaReg->XferErrorCallback = DFSDM_DMAError;
    hdfsdm_filter->hdmaReg->XferHalfCpltCallback = (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR) ?\
                                                   DFSDM_DMARegularHalfConvCplt : NULL;
    
    /* Start DMA in interrupt mode */
    if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaReg, (uint32_t)&hdfsdm_filter->Instance->FLTRDATAR, \
                        (uint32_t) pData, Length) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Start regular conversion */
      DFSDM_RegConvStart(hdfsdm_filter);
    }
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start regular conversion in DMA mode and to get
  *         only the 16 most significant bits of conversion.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if injected conversion is ongoing.
  *         Please note that data on buffer will contain signed 16 most significant
  *         bits of regular conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  pData The destination buffer address.
  * @param  Length The length of data to be transferred from DFSDM filter to memory.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularMsbStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                      int16_t                    *pData,
                                                      uint32_t                    Length)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check destination address and length */
  if((pData == NULL) || (Length == 0U))
  {
    status = HAL_ERROR;
  }
  /* Check that DMA is enabled for regular conversion */
  else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_RDMAEN) != DFSDM_FLTCR1_RDMAEN)
  {
    status = HAL_ERROR;
  }
  /* Check parameters compatibility */
  else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
          (hdfsdm_filter->hdmaReg->Init.Mode == DMA_NORMAL) && \
          (Length != 1U))
  {
    status = HAL_ERROR;
  }
  else if((hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
          (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR))
  {
    status = HAL_ERROR;
  }
  /* Check DFSDM filter state */
  else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
          (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ))
  {
    /* Set callbacks on DMA handler */
    hdfsdm_filter->hdmaReg->XferCpltCallback = DFSDM_DMARegularConvCplt;
    hdfsdm_filter->hdmaReg->XferErrorCallback = DFSDM_DMAError;
    hdfsdm_filter->hdmaReg->XferHalfCpltCallback = (hdfsdm_filter->hdmaReg->Init.Mode == DMA_CIRCULAR) ?\
                                                   DFSDM_DMARegularHalfConvCplt : NULL;
    
    /* Start DMA in interrupt mode */
    if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaReg, (uint32_t)(&hdfsdm_filter->Instance->FLTRDATAR) + 2U, \
                        (uint32_t) pData, Length) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Start regular conversion */
      DFSDM_RegConvStart(hdfsdm_filter);
    }
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop regular conversion in DMA mode.
  * @note   This function should be called only if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterRegularStop_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop current DMA transfer */
    if(HAL_DMA_Abort(hdfsdm_filter->hdmaReg) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Stop regular conversion */
      DFSDM_RegConvStop(hdfsdm_filter);
    }
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to get regular conversion value.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Corresponding channel of regular conversion.
  * @retval Regular conversion value
  */
int32_t HAL_DFSDM_FilterGetRegularValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                        uint32_t                   *Channel)
{
  uint32_t reg = 0U;
  int32_t  value = 0;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(Channel != NULL);

  /* Get value of data register for regular channel */
  reg = hdfsdm_filter->Instance->FLTRDATAR;
  
  /* Extract channel and regular conversion value */
  *Channel = (reg & DFSDM_FLTRDATAR_RDATACH);
  value = ((int32_t)(reg & DFSDM_FLTRDATAR_RDATA) >> DFSDM_FLTRDATAR_RDATA_Pos);

  /* return regular conversion value */
  return value;
}

/**
  * @brief  This function allows to start injected conversion in polling mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG))
  {
    /* Start injected conversion */
    DFSDM_InjConvStart(hdfsdm_filter);
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to poll for the end of injected conversion.
  * @note   This function should be called only if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Timeout Timeout value in milliseconds.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterPollForInjConversion(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                       uint32_t                    Timeout)
{
  uint32_t tickstart;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    return HAL_ERROR;
  }
  else
  {
    /* Get timeout */
    tickstart = HAL_GetTick();  

    /* Wait end of injected conversions */
    while((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JEOCF) != DFSDM_FLTISR_JEOCF)
    {
      /* Check the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))
        {
          /* Return timeout status */
          return HAL_TIMEOUT;
        }
      }
    }
    /* Check if overrun occurs */
    if((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JOVRF) == DFSDM_FLTISR_JOVRF)
    {
      /* Update error code and call error callback */
      hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_INJECTED_OVERRUN;
      HAL_DFSDM_FilterErrorCallback(hdfsdm_filter);

      /* Clear injected overrun flag */
      hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRJOVRF;
    }

    /* Update remaining injected conversions */
    hdfsdm_filter->InjConvRemaining--;
    if(hdfsdm_filter->InjConvRemaining == 0U)
    {
      /* Update DFSDM filter state only if trigger is software */
      if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER)
      {
        hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \
                               HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG;
      }
      
      /* end of injected sequence, reset the value */
      hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                         hdfsdm_filter->InjectedChannelsNbr : 1U;
    }

    /* Return function status */
    return HAL_OK;
  }
}

/**
  * @brief  This function allows to stop injected conversion in polling mode.
  * @note   This function should be called only if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop injected conversion */
    DFSDM_InjConvStop(hdfsdm_filter);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start injected conversion in interrupt mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if regular conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG))
  {
    /* Enable interrupts for injected conversions */
    hdfsdm_filter->Instance->FLTCR2 |= (DFSDM_FLTCR2_JEOCIE | DFSDM_FLTCR2_JOVRIE);
    
    /* Start injected conversion */
    DFSDM_InjConvStart(hdfsdm_filter);
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop injected conversion in interrupt mode.
  * @note   This function should be called only if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Disable interrupts for injected conversions */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_JEOCIE | DFSDM_FLTCR2_JOVRIE);
    
    /* Stop injected conversion */
    DFSDM_InjConvStop(hdfsdm_filter);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start injected conversion in DMA mode.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if regular conversion is ongoing.
  *         Please note that data on buffer will contain signed injected conversion
  *         value on 24 most significant bits and corresponding channel on 3 least
  *         significant bits.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  pData The destination buffer address.
  * @param  Length The length of data to be transferred from DFSDM filter to memory.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                    int32_t                    *pData,
                                                    uint32_t                    Length)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check destination address and length */
  if((pData == NULL) || (Length == 0U))
  {
    status = HAL_ERROR;
  }
  /* Check that DMA is enabled for injected conversion */
  else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_JDMAEN) != DFSDM_FLTCR1_JDMAEN)
  {
    status = HAL_ERROR;
  }
  /* Check parameters compatibility */
  else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->hdmaInj->Init.Mode == DMA_NORMAL) && \
          (Length > hdfsdm_filter->InjConvRemaining))
  {
    status = HAL_ERROR;
  }
  else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR))
  {
    status = HAL_ERROR;
  }
  /* Check DFSDM filter state */
  else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
          (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG))
  {
    /* Set callbacks on DMA handler */
    hdfsdm_filter->hdmaInj->XferCpltCallback = DFSDM_DMAInjectedConvCplt;
    hdfsdm_filter->hdmaInj->XferErrorCallback = DFSDM_DMAError;
    hdfsdm_filter->hdmaInj->XferHalfCpltCallback = (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR) ?\
                                                   DFSDM_DMAInjectedHalfConvCplt : NULL;
    
    /* Start DMA in interrupt mode */
    if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaInj, (uint32_t)&hdfsdm_filter->Instance->FLTJDATAR, \
                        (uint32_t) pData, Length) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Start injected conversion */
      DFSDM_InjConvStart(hdfsdm_filter);
    }
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start injected conversion in DMA mode and to get
  *         only the 16 most significant bits of conversion.
  * @note   This function should be called only when DFSDM filter instance is 
  *         in idle state or if regular conversion is ongoing.
  *         Please note that data on buffer will contain signed 16 most significant
  *         bits of injected conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  pData The destination buffer address.
  * @param  Length The length of data to be transferred from DFSDM filter to memory.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedMsbStart_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                                       int16_t                    *pData,
                                                       uint32_t                    Length)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check destination address and length */
  if((pData == NULL) || (Length == 0U))
  {
    status = HAL_ERROR;
  }
  /* Check that DMA is enabled for injected conversion */
  else if((hdfsdm_filter->Instance->FLTCR1 & DFSDM_FLTCR1_JDMAEN) != DFSDM_FLTCR1_JDMAEN)
  {
    status = HAL_ERROR;
  }
  /* Check parameters compatibility */
  else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->hdmaInj->Init.Mode == DMA_NORMAL) && \
          (Length > hdfsdm_filter->InjConvRemaining))
  {
    status = HAL_ERROR;
  }
  else if((hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER) && \
          (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR))
  {
    status = HAL_ERROR;
  }
  /* Check DFSDM filter state */
  else if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) || \
          (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG))
  {
    /* Set callbacks on DMA handler */
    hdfsdm_filter->hdmaInj->XferCpltCallback = DFSDM_DMAInjectedConvCplt;
    hdfsdm_filter->hdmaInj->XferErrorCallback = DFSDM_DMAError;
    hdfsdm_filter->hdmaInj->XferHalfCpltCallback = (hdfsdm_filter->hdmaInj->Init.Mode == DMA_CIRCULAR) ?\
                                                   DFSDM_DMAInjectedHalfConvCplt : NULL;
    
    /* Start DMA in interrupt mode */
    if(HAL_DMA_Start_IT(hdfsdm_filter->hdmaInj, (uint32_t)(&hdfsdm_filter->Instance->FLTJDATAR) + 2U, \
                        (uint32_t) pData, Length) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Start injected conversion */
      DFSDM_InjConvStart(hdfsdm_filter);
    }
  }
  else
  {
    status = HAL_ERROR;
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop injected conversion in DMA mode.
  * @note   This function should be called only if injected conversion is ongoing.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterInjectedStop_DMA(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Check DFSDM filter state */
  if((hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_INJ) && \
     (hdfsdm_filter->State != HAL_DFSDM_FILTER_STATE_REG_INJ))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Stop current DMA transfer */
    if(HAL_DMA_Abort(hdfsdm_filter->hdmaInj) != HAL_OK)
    {
      /* Set DFSDM filter in error state */
      hdfsdm_filter->State = HAL_DFSDM_FILTER_STATE_ERROR;
      status = HAL_ERROR;
    }
    else
    {
      /* Stop regular conversion */
      DFSDM_InjConvStop(hdfsdm_filter);
    }
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to get injected conversion value.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Corresponding channel of injected conversion.
  * @retval Injected conversion value
  */
int32_t HAL_DFSDM_FilterGetInjectedValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter, 
                                         uint32_t                   *Channel)
{
  uint32_t reg = 0U;
  int32_t  value = 0;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(Channel != NULL);

  /* Get value of data register for injected channel */
  reg = hdfsdm_filter->Instance->FLTJDATAR;
  
  /* Extract channel and injected conversion value */
  *Channel = (reg & DFSDM_FLTJDATAR_JDATACH);
  value = ((int32_t)(reg & DFSDM_FLTJDATAR_JDATA) >> DFSDM_FLTJDATAR_JDATA_Pos);

  /* return regular conversion value */
  return value;
}

/**
  * @brief  This function allows to start filter analog watchdog in interrupt mode.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  awdParam DFSDM filter analog watchdog parameters.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterAwdStart_IT(DFSDM_Filter_HandleTypeDef   *hdfsdm_filter,
                                              DFSDM_Filter_AwdParamTypeDef *awdParam)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(IS_DFSDM_FILTER_AWD_DATA_SOURCE(awdParam->DataSource));
  assert_param(IS_DFSDM_INJECTED_CHANNEL(awdParam->Channel));
  assert_param(IS_DFSDM_FILTER_AWD_THRESHOLD(awdParam->HighThreshold));
  assert_param(IS_DFSDM_FILTER_AWD_THRESHOLD(awdParam->LowThreshold));
  assert_param(IS_DFSDM_BREAK_SIGNALS(awdParam->HighBreakSignal));
  assert_param(IS_DFSDM_BREAK_SIGNALS(awdParam->LowBreakSignal));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Set analog watchdog data source */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_AWFSEL);
    hdfsdm_filter->Instance->FLTCR1 |= awdParam->DataSource;

    /* Set thresholds and break signals */
    hdfsdm_filter->Instance->FLTAWHTR &= ~(DFSDM_FLTAWHTR_AWHT | DFSDM_FLTAWHTR_BKAWH);
    hdfsdm_filter->Instance->FLTAWHTR |= (((uint32_t) awdParam->HighThreshold << DFSDM_FLTAWHTR_AWHT_Pos) | \
                                           awdParam->HighBreakSignal);
    hdfsdm_filter->Instance->FLTAWLTR &= ~(DFSDM_FLTAWLTR_AWLT | DFSDM_FLTAWLTR_BKAWL);
    hdfsdm_filter->Instance->FLTAWLTR |= (((uint32_t) awdParam->LowThreshold << DFSDM_FLTAWLTR_AWLT_Pos) | \
                                           awdParam->LowBreakSignal);

    /* Set channels and interrupt for analog watchdog */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_AWDCH);
    hdfsdm_filter->Instance->FLTCR2 |= (((awdParam->Channel & DFSDM_LSB_MASK) << DFSDM_FLTCR2_AWDCH_Pos) | \
                                        DFSDM_FLTCR2_AWDIE);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop filter analog watchdog in interrupt mode.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterAwdStop_IT(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Reset channels for analog watchdog and deactivate interrupt */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_AWDCH | DFSDM_FLTCR2_AWDIE);

    /* Clear all analog watchdog flags */
    hdfsdm_filter->Instance->FLTAWCFR = (DFSDM_FLTAWCFR_CLRAWHTF | DFSDM_FLTAWCFR_CLRAWLTF);
    
    /* Reset thresholds and break signals */
    hdfsdm_filter->Instance->FLTAWHTR &= ~(DFSDM_FLTAWHTR_AWHT | DFSDM_FLTAWHTR_BKAWH);
    hdfsdm_filter->Instance->FLTAWLTR &= ~(DFSDM_FLTAWLTR_AWLT | DFSDM_FLTAWLTR_BKAWL);

    /* Reset analog watchdog data source */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_AWFSEL);
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to start extreme detector feature.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Channels where extreme detector is enabled.
  *         This parameter can be a values combination of @ref DFSDM_Channel_Selection.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterExdStart(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                           uint32_t                    Channel)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(IS_DFSDM_INJECTED_CHANNEL(Channel));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Set channels for extreme detector */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_EXCH);
    hdfsdm_filter->Instance->FLTCR2 |= ((Channel & DFSDM_LSB_MASK) << DFSDM_FLTCR2_EXCH_Pos);    
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to stop extreme detector feature.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DFSDM_FilterExdStop(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  HAL_StatusTypeDef status = HAL_OK;
  __IO uint32_t     reg1;
  __IO uint32_t     reg2;

  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  
  /* Check DFSDM filter state */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_RESET) || \
     (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_ERROR))
  {
    /* Return error status */
    status = HAL_ERROR;
  }
  else
  {
    /* Reset channels for extreme detector */
    hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_EXCH);

    /* Clear extreme detector values */
    reg1 = hdfsdm_filter->Instance->FLTEXMAX;
    reg2 = hdfsdm_filter->Instance->FLTEXMIN;    
    UNUSED(reg1); /* To avoid GCC warning */
    UNUSED(reg2); /* To avoid GCC warning */
  }
  /* Return function status */
  return status;
}

/**
  * @brief  This function allows to get extreme detector maximum value.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Corresponding channel.
  * @retval Extreme detector maximum value
  *         This value is between Min_Data = -8388608 and Max_Data = 8388607.
  */
int32_t HAL_DFSDM_FilterGetExdMaxValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                       uint32_t                   *Channel)
{
  uint32_t reg = 0U;
  int32_t  value = 0;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(Channel != NULL);

  /* Get value of extreme detector maximum register */
  reg = hdfsdm_filter->Instance->FLTEXMAX;
  
  /* Extract channel and extreme detector maximum value */
  *Channel = (reg & DFSDM_FLTEXMAX_EXMAXCH);
  value = ((int32_t)(reg & DFSDM_FLTEXMAX_EXMAX) >> DFSDM_FLTEXMAX_EXMAX_Pos);

  /* return extreme detector maximum value */
  return value;
}

/**
  * @brief  This function allows to get extreme detector minimum value.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Corresponding channel.
  * @retval Extreme detector minimum value
  *         This value is between Min_Data = -8388608 and Max_Data = 8388607.
  */
int32_t HAL_DFSDM_FilterGetExdMinValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                       uint32_t                   *Channel)
{
  uint32_t reg = 0U;
  int32_t  value = 0;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));
  assert_param(Channel != NULL);

  /* Get value of extreme detector minimum register */
  reg = hdfsdm_filter->Instance->FLTEXMIN;
  
  /* Extract channel and extreme detector minimum value */
  *Channel = (reg & DFSDM_FLTEXMIN_EXMINCH);
  value = ((int32_t)(reg & DFSDM_FLTEXMIN_EXMIN) >> DFSDM_FLTEXMIN_EXMIN_Pos);

  /* return extreme detector minimum value */
  return value;
}

/**
  * @brief  This function allows to get conversion time value.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval Conversion time value
  * @note   To get time in second, this value has to be divided by DFSDM clock frequency.
  */
uint32_t HAL_DFSDM_FilterGetConvTimeValue(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  uint32_t reg = 0U;
  uint32_t value = 0U;
  
  /* Check parameters */
  assert_param(IS_DFSDM_FILTER_ALL_INSTANCE(hdfsdm_filter->Instance));

  /* Get value of conversion timer register */
  reg = hdfsdm_filter->Instance->FLTCNVTIMR;
  
  /* Extract conversion time value */
  value = ((reg & DFSDM_FLTCNVTIMR_CNVCNT) >> DFSDM_FLTCNVTIMR_CNVCNT_Pos);

  /* return extreme detector minimum value */
  return value;
}

/**
  * @brief  This function handles the DFSDM interrupts.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
void HAL_DFSDM_IRQHandler(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Check if overrun occurs during regular conversion */
  if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_ROVRF) != 0U) && \
     ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_ROVRIE) != 0U))
  {
    /* Clear regular overrun flag */
    hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRROVRF;

    /* Update error code */
    hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_REGULAR_OVERRUN;

    /* Call error callback */
    HAL_DFSDM_FilterErrorCallback(hdfsdm_filter);
  }
  /* Check if overrun occurs during injected conversion */
  else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JOVRF) != 0U) && \
          ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_JOVRIE) != 0U))
  {
    /* Clear injected overrun flag */
    hdfsdm_filter->Instance->FLTICR = DFSDM_FLTICR_CLRJOVRF;

    /* Update error code */
    hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_INJECTED_OVERRUN;

    /* Call error callback */
    HAL_DFSDM_FilterErrorCallback(hdfsdm_filter);
  }
  /* Check if end of regular conversion */
  else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_REOCF) != 0U) && \
          ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_REOCIE) != 0U))
  {
    /* Call regular conversion complete callback */
    HAL_DFSDM_FilterRegConvCpltCallback(hdfsdm_filter);

    /* End of conversion if mode is not continuous and software trigger */
    if((hdfsdm_filter->RegularContMode == DFSDM_CONTINUOUS_CONV_OFF) && \
       (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER))
    {
      /* Disable interrupts for regular conversions */
      hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_REOCIE);

      /* Update DFSDM filter state */
      hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \
                             HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ;
    }
  }
  /* Check if end of injected conversion */
  else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_JEOCF) != 0U) && \
          ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_JEOCIE) != 0U))
  {
    /* Call injected conversion complete callback */
    HAL_DFSDM_FilterInjConvCpltCallback(hdfsdm_filter);

    /* Update remaining injected conversions */
    hdfsdm_filter->InjConvRemaining--;
    if(hdfsdm_filter->InjConvRemaining == 0U)
    {
      /* End of conversion if trigger is software */
      if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER)
      {
        /* Disable interrupts for injected conversions */
        hdfsdm_filter->Instance->FLTCR2 &= ~(DFSDM_FLTCR2_JEOCIE);

        /* Update DFSDM filter state */
        hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \
                               HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG;
      }
      /* end of injected sequence, reset the value */
      hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                         hdfsdm_filter->InjectedChannelsNbr : 1U;
    }
  }
  /* Check if analog watchdog occurs */
  else if(((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_AWDF) != 0U) && \
          ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_AWDIE) != 0U))
  {
    uint32_t reg = 0U;
    uint32_t threshold = 0U;
    uint32_t channel = 0U;
    
    /* Get channel and threshold */
    reg = hdfsdm_filter->Instance->FLTAWSR;
    threshold = ((reg & DFSDM_FLTAWSR_AWLTF) != 0U) ? DFSDM_AWD_LOW_THRESHOLD : DFSDM_AWD_HIGH_THRESHOLD;
    if(threshold == DFSDM_AWD_HIGH_THRESHOLD)
    {
      reg = reg >> DFSDM_FLTAWSR_AWHTF_Pos;
    }
    while((reg & 1U) == 0U)
    {
      channel++;
      reg = reg >> 1U;
    }
    /* Clear analog watchdog flag */
    hdfsdm_filter->Instance->FLTAWCFR = (threshold == DFSDM_AWD_HIGH_THRESHOLD) ? \
                                        (1U << (DFSDM_FLTAWSR_AWHTF_Pos + channel)) : \
                                        (1U << channel);

    /* Call analog watchdog callback */
    HAL_DFSDM_FilterAwdCallback(hdfsdm_filter, channel, threshold);
  }
  /* Check if clock absence occurs */
  else if((hdfsdm_filter->Instance == DFSDM1_Filter0) && \
         ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) != 0U) && \
         ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_CKABIE) != 0U))
  {
    uint32_t reg = 0U;
    uint32_t channel = 0U;
    
    reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) >> DFSDM_FLTISR_CKABF_Pos);

    while(channel < DFSDM1_CHANNEL_NUMBER)
    {
      /* Check if flag is set and corresponding channel is enabled */
      if(((reg & 1U) != 0U) && (a_dfsdm1ChannelHandle[channel] != NULL))
      {
        /* Check clock absence has been enabled for this channel */
        if((a_dfsdm1ChannelHandle[channel]->Instance->CHCFGR1 & DFSDM_CHCFGR1_CKABEN) != 0U)
        {
          /* Clear clock absence flag */
          hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

          /* Call clock absence callback */
          HAL_DFSDM_ChannelCkabCallback(a_dfsdm1ChannelHandle[channel]);
        }
      }
      channel++;
      reg = reg >> 1U;
    }
  }
#if defined (DFSDM2_Channel0)     
  /* Check if clock absence occurs */
  else if((hdfsdm_filter->Instance == DFSDM2_Filter0) && \
         ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) != 0U) && \
         ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_CKABIE) != 0U))
  {
    uint32_t reg = 0U;
    uint32_t channel = 0U;
    
    reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_CKABF) >> DFSDM_FLTISR_CKABF_Pos);

    while(channel < DFSDM2_CHANNEL_NUMBER)
    {
      /* Check if flag is set and corresponding channel is enabled */
      if(((reg & 1U) != 0U) && (a_dfsdm2ChannelHandle[channel] != NULL))
      {
        /* Check clock absence has been enabled for this channel */
        if((a_dfsdm2ChannelHandle[channel]->Instance->CHCFGR1 & DFSDM_CHCFGR1_CKABEN) != 0U)
        {
          /* Clear clock absence flag */
          hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRCKABF_Pos + channel));

          /* Call clock absence callback */
          HAL_DFSDM_ChannelCkabCallback(a_dfsdm2ChannelHandle[channel]);
        }
      }
      channel++;
      reg = reg >> 1U;
    }
  }
#endif /* DFSDM2_Channel0 */  
  /* Check if short circuit detection occurs */
  else if((hdfsdm_filter->Instance == DFSDM1_Filter0) && \
         ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) != 0U) && \
         ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_SCDIE) != 0U))
  {
    uint32_t reg = 0U;
    uint32_t channel = 0U;
    
    /* Get channel */
    reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) >> DFSDM_FLTISR_SCDF_Pos);
    while((reg & 1U) == 0U)
    {
      channel++;
      reg = reg >> 1U;
    }
    
    /* Clear short circuit detection flag */
    hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));

    /* Call short circuit detection callback */
    HAL_DFSDM_ChannelScdCallback(a_dfsdm1ChannelHandle[channel]);
  }
#if defined (DFSDM2_Channel0)   
  /* Check if short circuit detection occurs */
  else if((hdfsdm_filter->Instance == DFSDM2_Filter0) && \
         ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) != 0U) && \
         ((hdfsdm_filter->Instance->FLTCR2 & DFSDM_FLTCR2_SCDIE) != 0U))
  {
    uint32_t reg = 0U;
    uint32_t channel = 0U;
    
    /* Get channel */
    reg = ((hdfsdm_filter->Instance->FLTISR & DFSDM_FLTISR_SCDF) >> DFSDM_FLTISR_SCDF_Pos);
    while((reg & 1U) == 0U)
    {
      channel++;
      reg = reg >> 1U;
    }
    
    /* Clear short circuit detection flag */
    hdfsdm_filter->Instance->FLTICR = (1U << (DFSDM_FLTICR_CLRSCSDF_Pos + channel));

    /* Call short circuit detection callback */
    HAL_DFSDM_ChannelScdCallback(a_dfsdm2ChannelHandle[channel]);
  }
#endif /* DFSDM2_Channel0 */  
}

/**
  * @brief  Regular conversion complete callback. 
  * @note   In interrupt mode, user has to read conversion value in this function
  *         using HAL_DFSDM_FilterGetRegularValue.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterRegConvCpltCallback could be implemented in the user file.
   */
}

/**
  * @brief  Half regular conversion complete callback. 
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterRegConvHalfCpltCallback could be implemented in the user file.
   */
}

/**
  * @brief  Injected conversion complete callback. 
  * @note   In interrupt mode, user has to read conversion value in this function
  *         using HAL_DFSDM_FilterGetInjectedValue.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterInjConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterInjConvCpltCallback could be implemented in the user file.
   */
}

/**
  * @brief  Half injected conversion complete callback. 
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterInjConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterInjConvHalfCpltCallback could be implemented in the user file.
   */
}

/**
  * @brief  Filter analog watchdog callback. 
  * @param  hdfsdm_filter DFSDM filter handle.
  * @param  Channel Corresponding channel.
  * @param  Threshold Low or high threshold has been reached.
  * @retval None
  */
__weak void HAL_DFSDM_FilterAwdCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter,
                                        uint32_t Channel, uint32_t Threshold)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  UNUSED(Channel);
  UNUSED(Threshold);
  
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterAwdCallback could be implemented in the user file.
   */
}

/**
  * @brief  Error callback. 
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
__weak void HAL_DFSDM_FilterErrorCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdfsdm_filter);
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DFSDM_FilterErrorCallback could be implemented in the user file.
   */
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group4_Filter Filter state functions
 *  @brief    Filter state functions
 *
@verbatim
  ==============================================================================
                     ##### Filter state functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Get the DFSDM filter state.
      (+) Get the DFSDM filter error.
@endverbatim
  * @{
  */

/**
  * @brief  This function allows to get the current DFSDM filter handle state.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval DFSDM filter state.
  */
HAL_DFSDM_Filter_StateTypeDef HAL_DFSDM_FilterGetState(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  /* Return DFSDM filter handle state */
  return hdfsdm_filter->State;
}

/**
  * @brief  This function allows to get the current DFSDM filter error.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval DFSDM filter error code.
  */
uint32_t HAL_DFSDM_FilterGetError(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
{
  return hdfsdm_filter->ErrorCode;
}

/**
  * @}
  */

/** @defgroup DFSDM_Exported_Functions_Group5_Filter MultiChannel operation functions
 *  @brief    Filter state functions
 *
@verbatim
  ==============================================================================
                     ##### Filter MultiChannel operation functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Control the DFSDM Multi channel delay block
@endverbatim
  * @{
  */
#if defined(SYSCFG_MCHDLYCR_BSCKSEL)
/**
  * @brief  Select the DFSDM2 as clock source for the bitstream clock.
  * @note   The SYSCFG clock marco __HAL_RCC_SYSCFG_CLK_ENABLE() must be called 
  *         before HAL_DFSDM_BitstreamClock_Start()  
  */
void HAL_DFSDM_BitstreamClock_Start(void)
{
  uint32_t tmp = 0; 
  
  tmp = SYSCFG->MCHDLYCR;
  tmp = (tmp &(~SYSCFG_MCHDLYCR_BSCKSEL));

  SYSCFG->MCHDLYCR  = (tmp|SYSCFG_MCHDLYCR_BSCKSEL);
}

/**
  * @brief Stop the DFSDM2 as clock source for the bitstream clock.
  * @note   The SYSCFG clock marco __HAL_RCC_SYSCFG_CLK_ENABLE() must be called 
  *         before HAL_DFSDM_BitstreamClock_Stop()     
  * @retval None
  */
void HAL_DFSDM_BitstreamClock_Stop(void)
{
  uint32_t tmp = 0U; 
  
  tmp = SYSCFG->MCHDLYCR;
  tmp = (tmp &(~SYSCFG_MCHDLYCR_BSCKSEL));

  SYSCFG->MCHDLYCR  = tmp;
}

/**
  * @brief  Disable Delay Clock for DFSDM1/2.
  * @param MCHDLY HAL_MCHDLY_CLOCK_DFSDM2.
  *               HAL_MCHDLY_CLOCK_DFSDM1.
  * @note   The SYSCFG clock marco __HAL_RCC_SYSCFG_CLK_ENABLE() must be called 
  *         before HAL_DFSDM_DisableDelayClock()     
  * @retval None
  */
void HAL_DFSDM_DisableDelayClock(uint32_t MCHDLY)
{
  uint32_t tmp = 0U; 
  
  assert_param(IS_DFSDM_DELAY_CLOCK(MCHDLY));
  
  tmp = SYSCFG->MCHDLYCR;
  if(MCHDLY == HAL_MCHDLY_CLOCK_DFSDM2)
  {
    tmp = tmp &(~SYSCFG_MCHDLYCR_MCHDLY2EN);
  }
  else
  {
    tmp = tmp &(~SYSCFG_MCHDLYCR_MCHDLY1EN);
  }

  SYSCFG->MCHDLYCR  = tmp;
}

/**
  * @brief  Enable Delay Clock for DFSDM1/2.
  * @param MCHDLY HAL_MCHDLY_CLOCK_DFSDM2.
  *               HAL_MCHDLY_CLOCK_DFSDM1.
  * @note   The SYSCFG clock marco __HAL_RCC_SYSCFG_CLK_ENABLE() must be called 
  *         before HAL_DFSDM_EnableDelayClock()       
  * @retval None
  */
void HAL_DFSDM_EnableDelayClock(uint32_t MCHDLY)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_DELAY_CLOCK(MCHDLY));

  tmp = SYSCFG->MCHDLYCR;
  tmp = tmp & ~MCHDLY;

  SYSCFG->MCHDLYCR  = (tmp|MCHDLY);
}

/**
  * @brief  Select the source for CKin signals for DFSDM1/2.
  * @param source DFSDM2_CKIN_PAD.
  *               DFSDM2_CKIN_DM.
  *               DFSDM1_CKIN_PAD.
  *               DFSDM1_CKIN_DM.
  * @retval None
  */
void HAL_DFSDM_ClockIn_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 
  
  assert_param(IS_DFSDM_CLOCKIN_SELECTION(source));

  tmp = SYSCFG->MCHDLYCR;
  
  if((source == HAL_DFSDM2_CKIN_PAD) || (source == HAL_DFSDM2_CKIN_DM))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CFG);
    
    if(source == HAL_DFSDM2_CKIN_PAD) 
    {
      source = 0x000000U;
    }
  }
  else
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1CFG);
  }

  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Select the source for CKOut signals for DFSDM1/2.
  * @param source: DFSDM2_CKOUT_DFSDM2.
  *                DFSDM2_CKOUT_M27. 
  *                DFSDM1_CKOUT_DFSDM1.
  *                DFSDM1_CKOUT_M27.
  * @retval None
  */
void HAL_DFSDM_ClockOut_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 
  
  assert_param(IS_DFSDM_CLOCKOUT_SELECTION(source));
  
  tmp = SYSCFG->MCHDLYCR;

  if((source == HAL_DFSDM2_CKOUT_DFSDM2) || (source == HAL_DFSDM2_CKOUT_M27))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CKOSEL);
    
    if(source == HAL_DFSDM2_CKOUT_DFSDM2)
    {
      source = 0x000U;
    }
  }
  else
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1CKOSEL);
  }

  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Select the source for DataIn0 signals for DFSDM1/2.
  * @param source DATAIN0_DFSDM2_PAD.
  *               DATAIN0_DFSDM2_DATAIN1. 
  *               DATAIN0_DFSDM1_PAD.
  *               DATAIN0_DFSDM1_DATAIN1.                  
  * @retval None
  */
void HAL_DFSDM_DataIn0_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_DATAIN0_SRC_SELECTION(source));

  tmp = SYSCFG->MCHDLYCR;
  
  if((source == HAL_DATAIN0_DFSDM2_PAD)|| (source == HAL_DATAIN0_DFSDM2_DATAIN1))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2D0SEL);
    if(source == HAL_DATAIN0_DFSDM2_PAD)
    {
      source = 0x00000U;
    }
  }
  else
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1D0SEL);
  }
  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Select the source for DataIn2 signals for DFSDM1/2.
  * @param source DATAIN2_DFSDM2_PAD.
  *               DATAIN2_DFSDM2_DATAIN3. 
  *               DATAIN2_DFSDM1_PAD.
  *               DATAIN2_DFSDM1_DATAIN3.
  * @retval None
  */
void HAL_DFSDM_DataIn2_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_DATAIN2_SRC_SELECTION(source));

  tmp = SYSCFG->MCHDLYCR;
  
  if((source == HAL_DATAIN2_DFSDM2_PAD)|| (source == HAL_DATAIN2_DFSDM2_DATAIN3))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2D2SEL);
    if (source == HAL_DATAIN2_DFSDM2_PAD)
    {
      source = 0x0000U;
    }     
  }
  else
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1D2SEL);
  }
  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Select the source for DataIn4 signals for DFSDM2.
  * @param source DATAIN4_DFSDM2_PAD.
  *               DATAIN4_DFSDM2_DATAIN5
  * @retval None
  */
void HAL_DFSDM_DataIn4_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_DATAIN4_SRC_SELECTION(source));

  tmp = SYSCFG->MCHDLYCR;
  tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2D4SEL);

  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Select the source for DataIn6 signals for DFSDM2.
  * @param source DATAIN6_DFSDM2_PAD.
  *               DATAIN6_DFSDM2_DATAIN7.
  * @retval None
  */
void HAL_DFSDM_DataIn6_SourceSelection(uint32_t source)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_DATAIN6_SRC_SELECTION(source));

  tmp = SYSCFG->MCHDLYCR;
  
  tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2D6SEL);

  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  Configure the distribution of the bitstream clock gated from TIM4_OC 
  *         for DFSDM1 or TIM3_OC for DFSDM2 
  * @param source DFSDM1_CLKIN0_TIM4OC2
  *               DFSDM1_CLKIN2_TIM4OC2
  *               DFSDM1_CLKIN1_TIM4OC1
  *               DFSDM1_CLKIN3_TIM4OC1
  *               DFSDM2_CLKIN0_TIM3OC4
  *               DFSDM2_CLKIN4_TIM3OC4
  *               DFSDM2_CLKIN1_TIM3OC3
  *               DFSDM2_CLKIN5_TIM3OC3
  *               DFSDM2_CLKIN2_TIM3OC2
  *               DFSDM2_CLKIN6_TIM3OC2
  *               DFSDM2_CLKIN3_TIM3OC1
  *               DFSDM2_CLKIN7_TIM3OC1
  * @retval None
  */
void HAL_DFSDM_BitStreamClkDistribution_Config(uint32_t source)
{
  uint32_t tmp = 0U; 

  assert_param(IS_DFSDM_BITSTREM_CLK_DISTRIBUTION(source));

  tmp = SYSCFG->MCHDLYCR;

  if ((source == HAL_DFSDM1_CLKIN0_TIM4OC2) || (source == HAL_DFSDM1_CLKIN2_TIM4OC2))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1CK02SEL);
  }
  else if ((source == HAL_DFSDM1_CLKIN1_TIM4OC1) || (source == HAL_DFSDM1_CLKIN3_TIM4OC1))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM1CK13SEL);
  }
  else   if ((source == HAL_DFSDM2_CLKIN0_TIM3OC4) || (source == HAL_DFSDM2_CLKIN4_TIM3OC4))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CK04SEL);
  }
  else if ((source == HAL_DFSDM2_CLKIN1_TIM3OC3) || (source == HAL_DFSDM2_CLKIN5_TIM3OC3))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CK15SEL);
    
  }else  if ((source == HAL_DFSDM2_CLKIN2_TIM3OC2) || (source == HAL_DFSDM2_CLKIN6_TIM3OC2))
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CK26SEL);
  }
  else
  {
    tmp =  (tmp & ~SYSCFG_MCHDLYCR_DFSDM2CK37SEL);
  }
  
  if((source == HAL_DFSDM1_CLKIN0_TIM4OC2) ||(source == HAL_DFSDM1_CLKIN1_TIM4OC1)||
     (source == HAL_DFSDM2_CLKIN0_TIM3OC4) ||(source == HAL_DFSDM2_CLKIN1_TIM3OC3)||
     (source == HAL_DFSDM2_CLKIN2_TIM3OC2) ||(source == HAL_DFSDM2_CLKIN3_TIM3OC1))
  {
    source = 0x0000U;
  }
  
  SYSCFG->MCHDLYCR = (source|tmp);
}

/**
  * @brief  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  
  * @param  mchdlystruct Structure of multi channel configuration
  * @retval None
  * @note   The SYSCFG clock marco __HAL_RCC_SYSCFG_CLK_ENABLE() must be called 
  *         before HAL_DFSDM_ConfigMultiChannelDelay()
  * @note   The HAL_DFSDM_ConfigMultiChannelDelay() function clears the SYSCFG-MCHDLYCR
  *         register before setting the new configuration.           
  */
void HAL_DFSDM_ConfigMultiChannelDelay(DFSDM_MultiChannelConfigTypeDef* mchdlystruct)
{ 
  uint32_t mchdlyreg = 0U; 
  
  assert_param(IS_DFSDM_DFSDM1_CLKOUT(mchdlystruct->DFSDM1ClockOut));
  assert_param(IS_DFSDM_DFSDM2_CLKOUT(mchdlystruct->DFSDM2ClockOut));
  assert_param(IS_DFSDM_DFSDM1_CLKIN(mchdlystruct->DFSDM1ClockIn));
  assert_param(IS_DFSDM_DFSDM2_CLKIN(mchdlystruct->DFSDM2ClockIn));
  assert_param(IS_DFSDM_DFSDM1_BIT_CLK((mchdlystruct->DFSDM1BitClkDistribution)));
  assert_param(IS_DFSDM_DFSDM2_BIT_CLK(mchdlystruct->DFSDM2BitClkDistribution));
  assert_param(IS_DFSDM_DFSDM1_DATA_DISTRIBUTION(mchdlystruct->DFSDM1DataDistribution));
  assert_param(IS_DFSDM_DFSDM2_DATA_DISTRIBUTION(mchdlystruct->DFSDM2DataDistribution));
  
  mchdlyreg = (SYSCFG->MCHDLYCR & 0x80103U);

  SYSCFG->MCHDLYCR = (mchdlyreg |(mchdlystruct->DFSDM1ClockOut)|(mchdlystruct->DFSDM2ClockOut)|
                     (mchdlystruct->DFSDM1ClockIn)|(mchdlystruct->DFSDM2ClockIn)|
                     (mchdlystruct->DFSDM1BitClkDistribution)| (mchdlystruct->DFSDM2BitClkDistribution)|
                     (mchdlystruct->DFSDM1DataDistribution)| (mchdlystruct->DFSDM2DataDistribution));

}
#endif /* SYSCFG_MCHDLYCR_BSCKSEL */
/**
  * @}
  */
/**
  * @}
  */
/* End of exported functions -------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/
/** @addtogroup DFSDM_Private_Functions DFSDM Private Functions
  * @{
  */

/**
  * @brief  DMA half transfer complete callback for regular conversion. 
  * @param  hdma DMA handle.
  * @retval None
  */
static void DFSDM_DMARegularHalfConvCplt(DMA_HandleTypeDef *hdma)   
{
  /* Get DFSDM filter handle */
  DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent;

  /* Call regular half conversion complete callback */
  HAL_DFSDM_FilterRegConvHalfCpltCallback(hdfsdm_filter);
}

/**
  * @brief  DMA transfer complete callback for regular conversion. 
  * @param  hdma DMA handle.
  * @retval None
  */
static void DFSDM_DMARegularConvCplt(DMA_HandleTypeDef *hdma)   
{
  /* Get DFSDM filter handle */
  DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent;

  /* Call regular conversion complete callback */
  HAL_DFSDM_FilterRegConvCpltCallback(hdfsdm_filter);
}

/**
  * @brief  DMA half transfer complete callback for injected conversion. 
  * @param  hdma DMA handle.
  * @retval None
  */
static void DFSDM_DMAInjectedHalfConvCplt(DMA_HandleTypeDef *hdma)   
{
  /* Get DFSDM filter handle */
  DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent;

  /* Call injected half conversion complete callback */
  HAL_DFSDM_FilterInjConvHalfCpltCallback(hdfsdm_filter);
}

/**
  * @brief  DMA transfer complete callback for injected conversion. 
  * @param  hdma DMA handle.
  * @retval None
  */
static void DFSDM_DMAInjectedConvCplt(DMA_HandleTypeDef *hdma)   
{
  /* Get DFSDM filter handle */
  DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent;

  /* Call injected conversion complete callback */
  HAL_DFSDM_FilterInjConvCpltCallback(hdfsdm_filter);
}

/**
  * @brief  DMA error callback. 
  * @param  hdma DMA handle.
  * @retval None
  */
static void DFSDM_DMAError(DMA_HandleTypeDef *hdma)   
{
  /* Get DFSDM filter handle */
  DFSDM_Filter_HandleTypeDef* hdfsdm_filter = (DFSDM_Filter_HandleTypeDef*) ((DMA_HandleTypeDef*)hdma)->Parent;

  /* Update error code */
  hdfsdm_filter->ErrorCode = DFSDM_FILTER_ERROR_DMA;

  /* Call error callback */
  HAL_DFSDM_FilterErrorCallback(hdfsdm_filter);
}

/**
  * @brief  This function allows to get the number of injected channels.
  * @param  Channels bitfield of injected channels.
  * @retval Number of injected channels.
  */
static uint32_t DFSDM_GetInjChannelsNbr(uint32_t Channels)
{
  uint32_t nbChannels = 0U;
  uint32_t tmp;
  
  /* Get the number of channels from bitfield */
  tmp = (uint32_t) (Channels & DFSDM_LSB_MASK);
  while(tmp != 0U)
  {
    if((tmp & 1U) != 0U)
    {
      nbChannels++;
    }
    tmp = (uint32_t) (tmp >> 1U);
  }
  return nbChannels;
}

/**
  * @brief  This function allows to get the channel number from channel instance.
  * @param  Instance DFSDM channel instance.
  * @retval Channel number.
  */
static uint32_t DFSDM_GetChannelFromInstance(DFSDM_Channel_TypeDef* Instance)
{
  uint32_t channel = 0xFFU;
  
  /* Get channel from instance */
#if defined(DFSDM2_Channel0)
  if((Instance == DFSDM1_Channel0) || (Instance == DFSDM2_Channel0))
  {
    channel = 0U;
  }
  else if((Instance == DFSDM1_Channel1) ||  (Instance == DFSDM2_Channel1))
  {
    channel = 1U;
  }
  else if((Instance == DFSDM1_Channel2) ||  (Instance == DFSDM2_Channel2))
  {
    channel = 2U;
  }
  else if((Instance == DFSDM1_Channel3) ||  (Instance == DFSDM2_Channel3))
  {
    channel = 3U;
  }
  else if(Instance == DFSDM2_Channel4)
  {
    channel = 4U;
  }
  else if(Instance == DFSDM2_Channel5)
  {
    channel = 5U;
  }
  else if(Instance == DFSDM2_Channel6)
  {
    channel = 6U;
  }
  else if(Instance == DFSDM2_Channel7)
  {
    channel = 7U;
  }
#else
  if(Instance == DFSDM1_Channel0)
  {
    channel = 0U;
  }
  else if(Instance == DFSDM1_Channel1)
  {
    channel = 1U;
  }
  else if(Instance == DFSDM1_Channel2)
  {
    channel = 2U;
  }
  else if(Instance == DFSDM1_Channel3)
  {
    channel = 3U;
  }
#endif /* defined(DFSDM2_Channel0) */

  return channel;
}

/**
  * @brief  This function allows to really start regular conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
static void DFSDM_RegConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
{
  /* Check regular trigger */
  if(hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER)
  {
    /* Software start of regular conversion */
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART;
  }
  else /* synchronous trigger */
  {
    /* Disable DFSDM filter */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN);
    
    /* Set RSYNC bit in DFSDM_FLTCR1 register */
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSYNC;

    /* Enable DFSDM  filter */
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN;
    
    /* If injected conversion was in progress, restart it */
    if(hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ)
    {
      if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER)
      {
        hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART;
      }
      /* Update remaining injected conversions */
      hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                         hdfsdm_filter->InjectedChannelsNbr : 1U;
    }
  }
  /* Update DFSDM filter state */
  hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) ? \
                          HAL_DFSDM_FILTER_STATE_REG : HAL_DFSDM_FILTER_STATE_REG_INJ;
}

/**
  * @brief  This function allows to really stop regular conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
static void DFSDM_RegConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
{
  /* Disable DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN);

  /* If regular trigger was synchronous, reset RSYNC bit in DFSDM_FLTCR1 register */
  if(hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SYNC_TRIGGER)
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_RSYNC);
  }

  /* Enable DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN;
  
  /* If injected conversion was in progress, restart it */
  if(hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG_INJ)
  {
    if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER)
    {
      hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART;
    }
    /* Update remaining injected conversions */
    hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                       hdfsdm_filter->InjectedChannelsNbr : 1U;
  }
  
  /* Update DFSDM filter state */
  hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) ? \
                          HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_INJ;
}

/**
  * @brief  This function allows to really start injected conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
static void DFSDM_InjConvStart(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
{
  /* Check injected trigger */
  if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SW_TRIGGER)
  {
    /* Software start of injected conversion */
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSWSTART;
  }
  else /* external or synchronous trigger */
  {
    /* Disable DFSDM filter */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN);
      
    if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SYNC_TRIGGER)
    {
      /* Set JSYNC bit in DFSDM_FLTCR1 register */
      hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_JSYNC;
    }
    else /* external trigger */
    {
      /* Set JEXTEN[1:0] bits in DFSDM_FLTCR1 register */
      hdfsdm_filter->Instance->FLTCR1 |= hdfsdm_filter->ExtTriggerEdge;
    }
    
    /* Enable DFSDM filter */
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN;

    /* If regular conversion was in progress, restart it */
    if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG) && \
       (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER))
    {
      hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART;
    }
  }
  /* Update DFSDM filter state */
  hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_READY) ? \
                         HAL_DFSDM_FILTER_STATE_INJ : HAL_DFSDM_FILTER_STATE_REG_INJ;
}

/**
  * @brief  This function allows to really stop injected conversion.
  * @param  hdfsdm_filter DFSDM filter handle.
  * @retval None
  */
static void DFSDM_InjConvStop(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
{
  /* Disable DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_DFEN);

  /* If injected trigger was synchronous, reset JSYNC bit in DFSDM_FLTCR1 register */
  if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_SYNC_TRIGGER)
  {
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JSYNC);
  }
  else if(hdfsdm_filter->InjectedTrigger == DFSDM_FILTER_EXT_TRIGGER)
  {
    /* Reset JEXTEN[1:0] bits in DFSDM_FLTCR1 register */
    hdfsdm_filter->Instance->FLTCR1 &= ~(DFSDM_FLTCR1_JEXTEN);
  }

  /* Enable DFSDM filter */
  hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_DFEN;
  
  /* If regular conversion was in progress, restart it */
  if((hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_REG_INJ) && \
     (hdfsdm_filter->RegularTrigger == DFSDM_FILTER_SW_TRIGGER))
  {
    hdfsdm_filter->Instance->FLTCR1 |= DFSDM_FLTCR1_RSWSTART;
  }

  /* Update remaining injected conversions */
  hdfsdm_filter->InjConvRemaining = (hdfsdm_filter->InjectedScanMode == ENABLE) ? \
                                     hdfsdm_filter->InjectedChannelsNbr : 1U;

  /* Update DFSDM filter state */
  hdfsdm_filter->State = (hdfsdm_filter->State == HAL_DFSDM_FILTER_STATE_INJ) ? \
                          HAL_DFSDM_FILTER_STATE_READY : HAL_DFSDM_FILTER_STATE_REG;
}
/**
  * @}
  */
/* End of private functions --------------------------------------------------*/

/**
  * @}
  */
#endif /* STM32F412Zx || STM32F412Vx || STM32F412Rx || STM32F412Cx || STM32F413xx || STM32F423xx */
#endif /* HAL_DFSDM_MODULE_ENABLED */
/**
  * @}
  */

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