stm32l4xx_hal_dac_ex.c

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/**
  ******************************************************************************
  * @file    stm32l4xx_hal_dac_ex.c
  * @author  MCD Application Team
  * @brief   DAC HAL module driver.
  *          This file provides firmware functions to manage the extended
  *          functionalities of the DAC peripheral.
  *
  *
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  @verbatim
  ==============================================================================
                      ##### How to use this driver #####
  ==============================================================================
    [..]
     *** Dual mode IO operation ***
     ==============================
      (+) When Dual mode is enabled (i.e. DAC Channel1 and Channel2 are used simultaneously) :
          Use HAL_DACEx_DualGetValue() to get digital data to be converted and use
          HAL_DACEx_DualSetValue() to set digital value to converted simultaneously in
          Channel 1 and Channel 2.

     *** Signal generation operation ***
     ===================================
      (+) Use HAL_DACEx_TriangleWaveGenerate() to generate Triangle signal.
      (+) Use HAL_DACEx_NoiseWaveGenerate() to generate Noise signal.

      (+) HAL_DACEx_SelfCalibrate to calibrate one DAC channel.
      (+) HAL_DACEx_SetUserTrimming to set user trimming value.
      (+) HAL_DACEx_GetTrimOffset to retrieve trimming value (factory setting
          after reset, user setting if HAL_DACEx_SetUserTrimming have been used
          at least one time after reset).

 @endverbatim
  ******************************************************************************
  */


/* Includes ------------------------------------------------------------------*/
#include "stm32l4xx_hal.h"

/** @addtogroup STM32L4xx_HAL_Driver
  * @{
  */

#ifdef HAL_DAC_MODULE_ENABLED

#if defined(DAC1)

/** @defgroup DACEx DACEx
  * @brief DAC Extended HAL module driver
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/** @defgroup DACEx_Exported_Functions DACEx Exported Functions
  * @{
  */

/** @defgroup DACEx_Exported_Functions_Group2 IO operation functions
 *  @brief    Extended IO operation functions
 *
@verbatim
  ==============================================================================
                 ##### Extended features functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Start conversion.
      (+) Stop conversion.
      (+) Start conversion and enable DMA transfer.
      (+) Stop conversion and disable DMA transfer.
      (+) Get result of conversion.
      (+) Get result of dual mode conversion.

@endverbatim
  * @{
  */

/**
  * @brief  Enable or disable the selected DAC channel wave generation.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  * @param  Amplitude Select max triangle amplitude.
  *          This parameter can be one of the following values:
  *            @arg DAC_TRIANGLEAMPLITUDE_1: Select max triangle amplitude of 1
  *            @arg DAC_TRIANGLEAMPLITUDE_3: Select max triangle amplitude of 3
  *            @arg DAC_TRIANGLEAMPLITUDE_7: Select max triangle amplitude of 7
  *            @arg DAC_TRIANGLEAMPLITUDE_15: Select max triangle amplitude of 15
  *            @arg DAC_TRIANGLEAMPLITUDE_31: Select max triangle amplitude of 31
  *            @arg DAC_TRIANGLEAMPLITUDE_63: Select max triangle amplitude of 63
  *            @arg DAC_TRIANGLEAMPLITUDE_127: Select max triangle amplitude of 127
  *            @arg DAC_TRIANGLEAMPLITUDE_255: Select max triangle amplitude of 255
  *            @arg DAC_TRIANGLEAMPLITUDE_511: Select max triangle amplitude of 511
  *            @arg DAC_TRIANGLEAMPLITUDE_1023: Select max triangle amplitude of 1023
  *            @arg DAC_TRIANGLEAMPLITUDE_2047: Select max triangle amplitude of 2047
  *            @arg DAC_TRIANGLEAMPLITUDE_4095: Select max triangle amplitude of 4095
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DACEx_TriangleWaveGenerate(DAC_HandleTypeDef *hdac, uint32_t Channel, uint32_t Amplitude)
{
  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(Channel));
  assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(Amplitude));

  /* Process locked */
  __HAL_LOCK(hdac);

  /* Change DAC state */
  hdac->State = HAL_DAC_STATE_BUSY;

  /* Enable the triangle wave generation for the selected DAC channel */
  MODIFY_REG(hdac->Instance->CR, ((DAC_CR_WAVE1) | (DAC_CR_MAMP1)) << (Channel & 0x10UL), (DAC_CR_WAVE1_1 | Amplitude) << (Channel & 0x10UL));

  /* Change DAC state */
  hdac->State = HAL_DAC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hdac);

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Enable or disable the selected DAC channel wave generation.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  * @param  Amplitude Unmask DAC channel LFSR for noise wave generation.
  *          This parameter can be one of the following values:
  *            @arg DAC_LFSRUNMASK_BIT0: Unmask DAC channel LFSR bit0 for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS1_0: Unmask DAC channel LFSR bit[1:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS2_0: Unmask DAC channel LFSR bit[2:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS3_0: Unmask DAC channel LFSR bit[3:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS4_0: Unmask DAC channel LFSR bit[4:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS5_0: Unmask DAC channel LFSR bit[5:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS6_0: Unmask DAC channel LFSR bit[6:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS7_0: Unmask DAC channel LFSR bit[7:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS8_0: Unmask DAC channel LFSR bit[8:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS9_0: Unmask DAC channel LFSR bit[9:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS10_0: Unmask DAC channel LFSR bit[10:0] for noise wave generation
  *            @arg DAC_LFSRUNMASK_BITS11_0: Unmask DAC channel LFSR bit[11:0] for noise wave generation
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DACEx_NoiseWaveGenerate(DAC_HandleTypeDef *hdac, uint32_t Channel, uint32_t Amplitude)
{
  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(Channel));
  assert_param(IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(Amplitude));

  /* Process locked */
  __HAL_LOCK(hdac);

  /* Change DAC state */
  hdac->State = HAL_DAC_STATE_BUSY;

  /* Enable the noise wave generation for the selected DAC channel */
  MODIFY_REG(hdac->Instance->CR, ((DAC_CR_WAVE1) | (DAC_CR_MAMP1)) << (Channel & 0x10UL), (DAC_CR_WAVE1_0 | Amplitude) << (Channel & 0x10UL));

  /* Change DAC state */
  hdac->State = HAL_DAC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hdac);

  /* Return function status */
  return HAL_OK;
}

#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
    defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || defined (STM32L496xx) || defined (STM32L4A6xx) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined(STM32L4S9xx)

/**
  * @brief  Set the specified data holding register value for dual DAC channel.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *               the configuration information for the specified DAC.
  * @param  Alignment Specifies the data alignment for dual channel DAC.
  *          This parameter can be one of the following values:
  *            DAC_ALIGN_8B_R: 8bit right data alignment selected
  *            DAC_ALIGN_12B_L: 12bit left data alignment selected
  *            DAC_ALIGN_12B_R: 12bit right data alignment selected
  * @param  Data1 Data for DAC Channel1 to be loaded in the selected data holding register.
  * @param  Data2 Data for DAC Channel2 to be loaded in the selected data  holding register.
  * @note   In dual mode, a unique register access is required to write in both
  *          DAC channels at the same time.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DACEx_DualSetValue(DAC_HandleTypeDef *hdac, uint32_t Alignment, uint32_t Data1, uint32_t Data2)
{
  uint32_t data;
  uint32_t tmp;

  /* Check the parameters */
  assert_param(IS_DAC_ALIGN(Alignment));
  assert_param(IS_DAC_DATA(Data1));
  assert_param(IS_DAC_DATA(Data2));

  /* Calculate and set dual DAC data holding register value */
  if (Alignment == DAC_ALIGN_8B_R)
  {
    data = ((uint32_t)Data2 << 8U) | Data1;
  }
  else
  {
    data = ((uint32_t)Data2 << 16U) | Data1;
  }

  tmp = (uint32_t)hdac->Instance;
  tmp += DAC_DHR12RD_ALIGNMENT(Alignment);

  /* Set the dual DAC selected data holding register */
  *(__IO uint32_t *)tmp = data;

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Conversion complete callback in non-blocking mode for Channel2.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DACEx_ConvCpltCallbackCh2(DAC_HandleTypeDef *hdac)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdac);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DACEx_ConvCpltCallbackCh2 could be implemented in the user file
   */
}

/**
  * @brief  Conversion half DMA transfer callback in non-blocking mode for Channel2.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DACEx_ConvHalfCpltCallbackCh2(DAC_HandleTypeDef *hdac)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdac);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DACEx_ConvHalfCpltCallbackCh2 could be implemented in the user file
   */
}

/**
  * @brief  Error DAC callback for Channel2.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DACEx_ErrorCallbackCh2(DAC_HandleTypeDef *hdac)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdac);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DACEx_ErrorCallbackCh2 could be implemented in the user file
   */
}

/**
  * @brief  DMA underrun DAC callback for Channel2.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DACEx_DMAUnderrunCallbackCh2(DAC_HandleTypeDef *hdac)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hdac);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_DACEx_DMAUnderrunCallbackCh2 could be implemented in the user file
   */
}
#endif  /* STM32L431xx STM32L432xx STM32L433xx STM32L442xx STM32L443xx                         */
        /* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx STM32L496xx STM32L4A6xx */
        /* STM32L4P5xx STM32L4Q5xx                                                             */
        /* STM32L4R5xx STM32L4R7xx STM32L4R9xx STM32L4S5xx STM32L4S7xx STM32L4S9xx             */

/**
  * @brief  Run the self calibration of one DAC channel.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @param  sConfig DAC channel configuration structure.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  * @retval Updates DAC_TrimmingValue. , DAC_UserTrimming set to DAC_UserTrimming
  * @retval HAL status
  * @note   Calibration runs about 7 ms.
  */

HAL_StatusTypeDef HAL_DACEx_SelfCalibrate(DAC_HandleTypeDef *hdac, DAC_ChannelConfTypeDef *sConfig, uint32_t Channel)
{
  HAL_StatusTypeDef status = HAL_OK;

  __IO uint32_t tmp;
  uint32_t trimmingvalue;
  uint32_t delta;

  /* store/restore channel configuration structure purpose */
  uint32_t oldmodeconfiguration;

  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(Channel));

 /* Check the DAC handle allocation */
 /* Check if DAC running */
  if (hdac == NULL)
  {
    status = HAL_ERROR;
  }
  else if (hdac->State == HAL_DAC_STATE_BUSY)
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Process locked */
    __HAL_LOCK(hdac);

    /* Store configuration */
    oldmodeconfiguration = (hdac->Instance->MCR & (DAC_MCR_MODE1 << (Channel & 0x10UL)));

    /* Disable the selected DAC channel */
    CLEAR_BIT((hdac->Instance->CR), (DAC_CR_EN1 << (Channel & 0x10UL)));

    /* Set mode in MCR  for calibration */
    MODIFY_REG(hdac->Instance->MCR, (DAC_MCR_MODE1 << (Channel & 0x10UL)), 0U);

    /* Set DAC Channel1 DHR register to the middle value */
    tmp = (uint32_t)hdac->Instance;

#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
    defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || defined (STM32L496xx) || defined (STM32L4A6xx) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined(STM32L4S9xx)
    if(Channel == DAC_CHANNEL_1)
    {
      tmp += DAC_DHR12R1_ALIGNMENT(DAC_ALIGN_12B_R);
    }
    else
    {
      tmp += DAC_DHR12R2_ALIGNMENT(DAC_ALIGN_12B_R);
    }
#endif  /* STM32L431xx STM32L432xx STM32L433xx STM32L442xx STM32L443xx                         */
        /* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx STM32L496xx STM32L4A6xx */
        /* STM32L4P5xx STM32L4Q5xx                                                             */
        /* STM32L4R5xx STM32L4R7xx STM32L4R9xx STM32L4S5xx STM32L4S7xx STM32L4S9xx             */
#if defined (STM32L451xx) || defined (STM32L452xx) || defined (STM32L462xx)
    tmp += DAC_DHR12R1_ALIGNMENT(DAC_ALIGN_12B_R);
#endif /* STM32L451xx STM32L452xx STM32L462xx */
    *(__IO uint32_t *) tmp = 0x0800U;

    /* Enable the selected DAC channel calibration */
    /* i.e. set DAC_CR_CENx bit */
    SET_BIT((hdac->Instance->CR), (DAC_CR_CEN1 << (Channel & 0x10UL)));

    /* Init trimming counter */
    /* Medium value */
    trimmingvalue = 16U;
    delta = 8U;
    while (delta != 0U)
    {
      /* Set candidate trimming */
      MODIFY_REG(hdac->Instance->CCR, (DAC_CCR_OTRIM1 << (Channel & 0x10UL)), (trimmingvalue << (Channel & 0x10UL)));

      /* tOFFTRIMmax delay x ms as per datasheet (electrical characteristics */
      /* i.e. minimum time needed between two calibration steps */
      HAL_Delay(1);

      if ((hdac->Instance->SR & (DAC_SR_CAL_FLAG1 << (Channel & 0x10UL))) == (DAC_SR_CAL_FLAG1 << (Channel & 0x10UL)))
      {
        /* DAC_SR_CAL_FLAGx is HIGH try higher trimming */
        trimmingvalue -= delta;
      }
      else
      {
        /* DAC_SR_CAL_FLAGx is LOW try lower trimming */
        trimmingvalue += delta;
      }
      delta >>= 1U;
    }

    /* Still need to check if right calibration is current value or one step below */
    /* Indeed the first value that causes the DAC_SR_CAL_FLAGx bit to change from 0 to 1  */
    /* Set candidate trimming */
    MODIFY_REG(hdac->Instance->CCR, (DAC_CCR_OTRIM1 << (Channel & 0x10UL)), (trimmingvalue << (Channel & 0x10UL)));

    /* tOFFTRIMmax delay x ms as per datasheet (electrical characteristics */
    /* i.e. minimum time needed between two calibration steps */
    HAL_Delay(1U);

    if ((hdac->Instance->SR & (DAC_SR_CAL_FLAG1 << (Channel & 0x10UL))) == 0UL)
    {
      /* OPAMP_CSR_OUTCAL is actually one value more */
      trimmingvalue++;
      /* Set right trimming */
      MODIFY_REG(hdac->Instance->CCR, (DAC_CCR_OTRIM1 << (Channel & 0x10UL)), (trimmingvalue << (Channel & 0x10UL)));
    }

    /* Disable the selected DAC channel calibration */
    /* i.e. clear DAC_CR_CENx bit */
    CLEAR_BIT((hdac->Instance->CR), (DAC_CR_CEN1 << (Channel & 0x10UL)));

    sConfig->DAC_TrimmingValue = trimmingvalue;
    sConfig->DAC_UserTrimming = DAC_TRIMMING_USER;

    /* Restore configuration */
    MODIFY_REG(hdac->Instance->MCR, (DAC_MCR_MODE1 << (Channel & 0x10UL)), oldmodeconfiguration);

    /* Process unlocked */
    __HAL_UNLOCK(hdac);
  }

  return status;
}

/**
  * @brief  Set the trimming mode and trimming value (user trimming mode applied).
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @param  sConfig DAC configuration structure updated with new DAC trimming value.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  * @param  NewTrimmingValue DAC new trimming value
  * @retval HAL status
  */

HAL_StatusTypeDef HAL_DACEx_SetUserTrimming(DAC_HandleTypeDef *hdac, DAC_ChannelConfTypeDef *sConfig, uint32_t Channel,
                                            uint32_t NewTrimmingValue)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(Channel));
  assert_param(IS_DAC_NEWTRIMMINGVALUE(NewTrimmingValue));

 /* Check the DAC handle allocation */
  if (hdac == NULL)
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Process locked */
    __HAL_LOCK(hdac);

    /* Set new trimming */
    MODIFY_REG(hdac->Instance->CCR, (DAC_CCR_OTRIM1 << (Channel & 0x10UL)), (NewTrimmingValue << (Channel & 0x10UL)));

    /* Update trimming mode */
    sConfig->DAC_UserTrimming = DAC_TRIMMING_USER;
    sConfig->DAC_TrimmingValue = NewTrimmingValue;

    /* Process unlocked */
    __HAL_UNLOCK(hdac);
  }
  return status;
}

/**
  * @brief  Return the DAC trimming value.
  * @param  hdac DAC handle
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  * @retval Trimming value : range: 0->31
  *
 */

uint32_t HAL_DACEx_GetTrimOffset(DAC_HandleTypeDef *hdac, uint32_t Channel)
{
    /* Check the parameter */
    assert_param(IS_DAC_CHANNEL(Channel));

    /* Retrieve trimming  */
  return ((hdac->Instance->CCR & (DAC_CCR_OTRIM1 << (Channel & 0x10UL))) >> (Channel & 0x10UL));
}

/**
  * @}
  */

#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
    defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || defined (STM32L496xx) || defined (STM32L4A6xx) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined(STM32L4S9xx)

/** @defgroup DACEx_Exported_Functions_Group3 Peripheral Control functions
 *  @brief    Extended Peripheral Control functions
 *
@verbatim
  ==============================================================================
             ##### Peripheral Control functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Set the specified data holding register value for DAC channel.

@endverbatim
  * @{
  */

/**
  * @brief  Return the last data output value of the selected DAC channel.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval The selected DAC channel data output value.
  */
uint32_t HAL_DACEx_DualGetValue(DAC_HandleTypeDef *hdac)
{
  uint32_t tmp = 0U;

  tmp |= hdac->Instance->DOR1;

  tmp |= hdac->Instance->DOR2 << 16U;

  /* Returns the DAC channel data output register value */
  return tmp;
}

/**
  * @}
  */

#endif  /* STM32L431xx STM32L432xx STM32L433xx STM32L442xx STM32L443xx                         */
        /* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx STM32L496xx STM32L4A6xx */
        /* STM32L4P5xx STM32L4Q5xx                                                             */
        /* STM32L4R5xx STM32L4R7xx STM32L4R9xx STM32L4S5xx STM32L4S7xx STM32L4S9xx             */

/**
  * @}
  */

#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
    defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || defined (STM32L496xx) || defined (STM32L4A6xx) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined(STM32L4S9xx)

/* Private functions ---------------------------------------------------------*/
/** @defgroup DACEx_Private_Functions DACEx private functions
 *  @brief    Extended private functions
   * @{
  */

/**
  * @brief  DMA conversion complete callback.
  * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  *                the configuration information for the specified DMA module.
  * @retval None
  */
void DAC_DMAConvCpltCh2(DMA_HandleTypeDef *hdma)
{
  DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;

#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  hdac->ConvCpltCallbackCh2(hdac);
#else
  HAL_DACEx_ConvCpltCallbackCh2(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

  hdac->State = HAL_DAC_STATE_READY;
}

/**
  * @brief  DMA half transfer complete callback.
  * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  *                the configuration information for the specified DMA module.
  * @retval None
  */
void DAC_DMAHalfConvCpltCh2(DMA_HandleTypeDef *hdma)
{
  DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  /* Conversion complete callback */
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  hdac->ConvHalfCpltCallbackCh2(hdac);
#else
  HAL_DACEx_ConvHalfCpltCallbackCh2(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
}

/**
  * @brief  DMA error callback.
  * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  *                the configuration information for the specified DMA module.
  * @retval None
  */
void DAC_DMAErrorCh2(DMA_HandleTypeDef *hdma)
{
  DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;

  /* Set DAC error code to DMA error */
  hdac->ErrorCode |= HAL_DAC_ERROR_DMA;

#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  hdac->ErrorCallbackCh2(hdac);
#else
  HAL_DACEx_ErrorCallbackCh2(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

  hdac->State = HAL_DAC_STATE_READY;
}

/**
  * @}
  */
#endif  /* STM32L431xx STM32L432xx STM32L433xx STM32L442xx STM32L443xx                         */
        /* STM32L471xx STM32L475xx STM32L476xx STM32L485xx STM32L486xx STM32L496xx STM32L4A6xx */
        /* STM32L4P5xx STM32L4Q5xx                                                             */
        /* STM32L4R5xx STM32L4R7xx STM32L4R9xx STM32L4S5xx STM32L4S7xx STM32L4S9xx             */

/**
  * @}
  */

#endif /* DAC1 */

#endif /* HAL_DAC_MODULE_ENABLED */

/**
  * @}
  */