text: /**
    ******************************************************************************
    * @file    stm32f7xx_hal_dac_ex.c
    * @author  MCD Application Team
    * @version V1.0.1
    * @date    25-June-2015
    * @brief   Extended 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) 2015 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 "stm32f7xx_hal.h"
  
  /** @addtogroup STM32F7xx_HAL_Driver
    * @{
    */
  
  /** @defgroup DACEx DACEx
    * @brief DAC driver modules
    * @{
    */
  
  #ifdef HAL_DAC_MODULE_ENABLED
  
  /* Private typedef -----------------------------------------------------------*/
  /* Private define ------------------------------------------------------------*/
  /* Private macro -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private function prototypes -----------------------------------------------*/
  /* Private functions ---------------------------------------------------------*/
  /* Exported functions --------------------------------------------------------*/
  /** @defgroup DACEx_Exported_Functions DAC 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:
    *            @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 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:
    *            @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 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)
  {
      /* NOTE : This function Should not be modified, when the callback is needed,
                the HAL_DAC_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)
  {
      /* 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)
  {
      /* 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)
  {
      /* NOTE : This function Should not be modified, when the callback is needed,
                the HAL_DACEx_DMAUnderrunCallbackCh2 could be implemented in the user file
       */
  }
  
  /**
    * @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 /* HAL_DAC_MODULE_ENABLED */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  