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/**

  ******************************************************************************

  * @file    stm32f1xx_hal_dac_ex.c

  * @author  MCD Application Team

  * @version V1.0.4

  * @date    29-April-2016

  * @brief   DAC HAL module driver.

  *         This file provides firmware functions to manage the following

  *         functionalities of DAC extension peripheral:

  *           + Extended features functions

  *    

  *

  @verbatim      

  ==============================================================================

                      ##### How to use this driver #####

  ==============================================================================

    [..]          

      (+) 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.  

      (+) Use HAL_DACEx_TriangleWaveGenerate() to generate Triangle signal.

      (+) Use HAL_DACEx_NoiseWaveGenerate() to generate Noise signal.

 @endverbatim    

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; COPYRIGHT(c) 2016 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 "stm32f1xx_hal.h"

/** @addtogroup STM32F1xx_HAL_Driver

  * @{

  */

/** @defgroup DACEx DACEx

  * @brief DACEx driver module

  * @{

  */

#ifdef HAL_DAC_MODULE_ENABLED

#if defined (STM32F100xB) || defined (STM32F100xE) || defined (STM32F101xE) || defined (STM32F101xG) || defined (STM32F103xE) || defined (STM32F103xG) || defined (STM32F105xC) || defined (STM32F107xC)

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

/* Exported functions --------------------------------------------------------*/

/** @defgroup DACEx_Exported_Functions DACEx Exported Functions

  * @{

  */

/** @defgroup DACEx_Exported_Functions_Group1 Extended features functions

 *  @brief    Extended features 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  Returns 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 = 0;

  tmp |= hdac->Instance->DOR1;

  tmp |= hdac->Instance->DOR2 << 16;

  /* Returns the DAC channel data output register value */

  return tmp;

}

/**

  * @brief  Enables or disables 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:

  *            DAC_CHANNEL_1 / DAC_CHANNEL_2

  * @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 selected wave generation for the selected DAC channel */

  MODIFY_REG(hdac->Instance->CR, ((DAC_CR_WAVE1)|(DAC_CR_MAMP1))<<Channel, (DAC_CR_WAVE1_1 | Amplitude) << Channel);

  /* Change DAC state */

  hdac->State = HAL_DAC_STATE_READY;

  /* Process unlocked */

  __HAL_UNLOCK(hdac);

  /* Return function status */

  return HAL_OK;

}

/**

  * @brief  Enables or disables 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:

  *            DAC_CHANNEL_1 / DAC_CHANNEL_2

  * @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 selected wave generation for the selected DAC channel */

  MODIFY_REG(hdac->Instance->CR, ((DAC_CR_WAVE1)|(DAC_CR_MAMP1))<<Channel, (DAC_CR_WAVE1_0 | Amplitude) << Channel);

  /* Change DAC state */

  hdac->State = HAL_DAC_STATE_READY;

  /* Process unlocked */

  __HAL_UNLOCK(hdac);

  /* Return function status */

  return HAL_OK;

}

/**

  * @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 Channel2 to be loaded in the selected data holding register.

  * @param  Data2: Data for DAC Channel1 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 = 0, tmp = 0;

  /* 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 << 8) | Data1;

  }

  else

  {

    data = ((uint32_t)Data2 << 16) | 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

   */

}

#if defined (STM32F100xB) || defined (STM32F100xE)

/**

  * @brief  DMA underrun DAC callback for channel1.

  *         Note: For STM32F100x devices with specific feature: DMA underrun.

  *         On these devices, this function uses the interruption of DMA

  *         underrun.

  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains

  *         the configuration information for the specified DAC.

  * @retval None

  */

__weak void HAL_DAC_DMAUnderrunCallbackCh1(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_DAC_DMAUnderrunCallbackCh1 could be implemented in the user file

   */

}

/**

  * @brief  DMA underrun DAC callback for channel2.

  *         Note: For STM32F100x devices with specific feature: DMA underrun.

  *         On these devices, this function uses the interruption of DMA

  *         underrun.

  * @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 /* STM32F100xB) || defined (STM32F100xE) */

/**

  * @}

  */

#if defined (STM32F100xB) || defined (STM32F100xE)

/**

  * @brief  Enables DAC and starts conversion of channel.

  *         Note: For STM32F100x devices with specific feature: DMA underrun.

  *         On these devices, this function enables the interruption of DMA

  *         underrun.

  * @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  pData: The destination peripheral Buffer address.

  * @param  Length: The length of data to be transferred from memory to DAC peripheral

  * @param  Alignment: Specifies the data alignment for DAC channel.

  *          This parameter can be one of the following values:

  *            @arg DAC_ALIGN_8B_R: 8bit right data alignment selected

  *            @arg DAC_ALIGN_12B_L: 12bit left data alignment selected

  *            @arg DAC_ALIGN_12B_R: 12bit right data alignment selected

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t* pData, uint32_t Length, uint32_t Alignment)

{

  uint32_t tmpreg = 0;

  /* Check the parameters */

  assert_param(IS_DAC_CHANNEL(Channel));

  assert_param(IS_DAC_ALIGN(Alignment));

  /* Process locked */

  __HAL_LOCK(hdac);

  /* Change DAC state */

  hdac->State = HAL_DAC_STATE_BUSY;

  if(Channel == DAC_CHANNEL_1)

  {

    /* Set the DMA transfer complete callback for channel1 */

    hdac->DMA_Handle1->XferCpltCallback = DAC_DMAConvCpltCh1;

    /* Set the DMA half transfer complete callback for channel1 */

    hdac->DMA_Handle1->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh1;

    /* Set the DMA error callback for channel1 */

    hdac->DMA_Handle1->XferErrorCallback = DAC_DMAErrorCh1;

    /* Enable the selected DAC channel1 DMA request */

    SET_BIT(hdac->Instance->CR, DAC_CR_DMAEN1);

    /* Case of use of channel 1 */

    switch(Alignment)

    {

      case DAC_ALIGN_12B_R:

        /* Get DHR12R1 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR12R1;

        break;

      case DAC_ALIGN_12B_L:

        /* Get DHR12L1 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR12L1;

        break;

      case DAC_ALIGN_8B_R:

        /* Get DHR8R1 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR8R1;

        break;

      default:

        break;

    }

  }

  else

  {

    /* Set the DMA transfer complete callback for channel2 */

    hdac->DMA_Handle2->XferCpltCallback = DAC_DMAConvCpltCh2;

    /* Set the DMA half transfer complete callback for channel2 */

    hdac->DMA_Handle2->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh2;

    /* Set the DMA error callback for channel2 */

    hdac->DMA_Handle2->XferErrorCallback = DAC_DMAErrorCh2;

    /* Enable the selected DAC channel2 DMA request */

    SET_BIT(hdac->Instance->CR, DAC_CR_DMAEN2);

    /* Case of use of channel 2 */

    switch(Alignment)

    {

      case DAC_ALIGN_12B_R:

        /* Get DHR12R2 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR12R2;

        break;

      case DAC_ALIGN_12B_L:

        /* Get DHR12L2 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR12L2;

        break;

      case DAC_ALIGN_8B_R:

        /* Get DHR8R2 address */

        tmpreg = (uint32_t)&hdac->Instance->DHR8R2;

        break;

      default:

        break;

    }

  }

  /* Enable the DMA channel */

  if(Channel == DAC_CHANNEL_1)

  {

    /* Enable the DAC DMA underrun interrupt */

    __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR1);

    /* Enable the DMA channel */

    HAL_DMA_Start_IT(hdac->DMA_Handle1, (uint32_t)pData, tmpreg, Length);

  }

  else

  {

    /* Enable the DAC DMA underrun interrupt */

    __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR2);

    /* Enable the DMA channel */

    HAL_DMA_Start_IT(hdac->DMA_Handle2, (uint32_t)pData, tmpreg, Length);

  }

  /* Enable the Peripharal */

  __HAL_DAC_ENABLE(hdac, Channel);

  /* Process Unlocked */

  __HAL_UNLOCK(hdac);

  /* Return function status */

  return HAL_OK;

}

#endif /* STM32F100xB) || defined (STM32F100xE) */

#if defined (STM32F100xB) || defined (STM32F100xE)

/**

  * @brief  Disables DAC and stop conversion of channel.

  *         Note: For STM32F100x devices with specific feature: DMA underrun.

  *         On these devices, this function disables the interruption of DMA

  *         underrun.

  * @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  

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel)

{

  HAL_StatusTypeDef status = HAL_OK;

  /* Check the parameters */

  assert_param(IS_DAC_CHANNEL(Channel));

  /* Disable the selected DAC channel DMA request */

  hdac->Instance->CR &= ~(DAC_CR_DMAEN1 << Channel);

  /* Disable the Peripharal */

  __HAL_DAC_DISABLE(hdac, Channel);

  /* Disable the DMA Channel */

  /* Channel1 is used */

  if(Channel == DAC_CHANNEL_1)

  {

    /* Disable the DMA channel */

    status = HAL_DMA_Abort(hdac->DMA_Handle1);

    /* Disable the DAC DMA underrun interrupt */

    __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);

  }

  else /* Channel2 is used for */

  {

    /* Disable the DMA channel */

    status = HAL_DMA_Abort(hdac->DMA_Handle2);

    /* Disable the DAC DMA underrun interrupt */

    __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR2);

  }

  /* Check if DMA Channel effectively disabled */

  if(status != HAL_OK)

  {

    /* Update ADC state machine to error */

    hdac->State = HAL_DAC_STATE_ERROR;      

  }

  else

  {

    /* Change DAC state */

    hdac->State = HAL_DAC_STATE_READY;

  }

  /* Return function status */

  return status;

}

#endif /* STM32F100xB) || defined (STM32F100xE) */

#if defined (STM32F100xB) || defined (STM32F100xE)

/**

  * @brief  Handles DAC interrupt request

  *         Note: For STM32F100x devices with specific feature: DMA underrun.

  *         On these devices, this function uses the interruption of DMA

  *         underrun.

  * @param  hdac: pointer to a DAC_HandleTypeDef structure that contains

  *         the configuration information for the specified DAC.

  * @retval None

  */

void HAL_DAC_IRQHandler(DAC_HandleTypeDef* hdac)

{

  if(__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR1))

  {

    /* Check underrun flag of DAC channel 1 */

    if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR1))

    {

      /* Change DAC state to error state */

      hdac->State = HAL_DAC_STATE_ERROR;

      /* Set DAC error code to chanel1 DMA underrun error */

      SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_DMAUNDERRUNCH1);

      /* Clear the underrun flag */

      __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR1);

      /* Disable the selected DAC channel1 DMA request */

      CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN1);

      /* Error callback */

      HAL_DAC_DMAUnderrunCallbackCh1(hdac);

    }

  }

  if(__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR2))

  {

    /* Check underrun flag of DAC channel 2 */

    if(__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR2))

    {

      /* Change DAC state to error state */

      hdac->State = HAL_DAC_STATE_ERROR;

      /* Set DAC error code to channel2 DMA underrun error */

      SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_DMAUNDERRUNCH2);

      /* Clear the underrun flag */

      __HAL_DAC_CLEAR_FLAG(hdac,DAC_FLAG_DMAUDR2);

      /* Disable the selected DAC channel1 DMA request */

      CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN2);

      /* Error callback */

      HAL_DACEx_DMAUnderrunCallbackCh2(hdac);

    }

  }

}

#endif /* STM32F100xB || STM32F100xE */

/**

  * @}

  */

/** @defgroup DACEx_Private_Functions DACEx 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;

  HAL_DACEx_ConvCpltCallbackCh2(hdac);

  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 */

    HAL_DACEx_ConvHalfCpltCallbackCh2(hdac);

}

/**

  * @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;

  HAL_DACEx_ErrorCallbackCh2(hdac);

  hdac->State= HAL_DAC_STATE_READY;

}

/**

  * @}

  */

#endif /* STM32F100xB || STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */

#endif /* HAL_DAC_MODULE_ENABLED */

/**

  * @}

  */

/**

  * @}

  */

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