/**
  ******************************************************************************
  * @file    py32l090_hal_dac.c
  * @author  MCU Application Team
  * @brief   DAC HAL module driver.
  *         This file provides firmware functions to manage the following
  *         functionalities of the Digital to Analog Converter (DAC) peripheral:
  *           + Initialization and de-initialization functions
  *           + IO operation functions
  *           + Peripheral Control functions
  *           + Peripheral State and Errors functions
  *
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************

  @verbatim
  ==============================================================================
                      ##### DAC Peripheral features #####
  ==============================================================================
 
@endverbatim
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "py32l0xx_hal.h"

/** @addtogroup PY32L090_HAL_Driver
  * @{
  */

#ifdef HAL_DAC_MODULE_ENABLED

/** @defgroup DAC DAC
  * @brief DAC driver modules
  * @{
  */

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

/** @defgroup DAC_Exported_Functions DAC Exported Functions
  * @{
  */

/** @defgroup DAC_Exported_Functions_Group1 Initialization and de-initialization functions
  *  @brief    Initialization and Configuration functions
  *
@verbatim
  ==============================================================================
              ##### Initialization and de-initialization functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Initialize and configure the DAC.
      (+) De-initialize the DAC.

@endverbatim
  * @{
  */

/**
  * @brief  Initialize the DAC peripheral according to the specified parameters
  *         in the DAC_InitStruct and initialize the associated handle.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef *hdac)
{
  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }
  /* Check the parameters */
  assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));

  if (hdac->State == HAL_DAC_STATE_RESET)
  {
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
    /* Init the DAC Callback settings */
    hdac->ConvCpltCallbackCh1           = HAL_DAC_ConvCpltCallbackCh1;
    hdac->ConvHalfBlockCpltCallbackCh1  = HAL_DAC_ConvHalfBlockCpltCallbackCh1;
    hdac->ErrorCallbackCh1              = HAL_DAC_ErrorCallbackCh1;
    hdac->DMAUnderrunCallbackCh1        = HAL_DAC_DMAUnderrunCallbackCh1;

    if (hdac->MspInitCallback == NULL)
    {
      hdac->MspInitCallback             = HAL_DAC_MspInit;
    }
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

    /* Allocate lock resource and initialize it */
    hdac->Lock = HAL_UNLOCKED;

#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
    /* Init the low level hardware */
    hdac->MspInitCallback(hdac);
#else
    /* Init the low level hardware */
    HAL_DAC_MspInit(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  }

  /* Initialize the DAC state*/
  hdac->State = HAL_DAC_STATE_BUSY;

  /* Set DAC error code to none */
  hdac->ErrorCode = HAL_DAC_ERROR_NONE;

  /* Initialize the DAC state*/
  hdac->State = HAL_DAC_STATE_READY;

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Deinitialize the DAC peripheral registers to their default reset values.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_DeInit(DAC_HandleTypeDef *hdac)
{
  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

  /* Check the parameters */
  assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));

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

#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  if (hdac->MspDeInitCallback == NULL)
  {
    hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
  }
  /* DeInit the low level hardware */
  hdac->MspDeInitCallback(hdac);
#else
  /* DeInit the low level hardware */
  HAL_DAC_MspDeInit(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

  /* Set DAC error code to none */
  hdac->ErrorCode = HAL_DAC_ERROR_NONE;

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

  /* Release Lock */
  __HAL_UNLOCK(hdac);

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Initialize the DAC MSP.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DAC_MspInit(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_MspInit could be implemented in the user file
   */
}

/**
  * @brief  DeInitialize the DAC MSP.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DAC_MspDeInit(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_MspDeInit could be implemented in the user file
   */
}

/**
  * @}
  */

/** @defgroup DAC_Exported_Functions_Group2 IO operation functions
  *  @brief    IO operation functions
  *
@verbatim
  ==============================================================================
             ##### IO operation 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.

@endverbatim
  * @{
  */

/**
  * @brief  Enables DAC and starts conversion of channel.
  * @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
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef *hdac, uint32_t Channel)
{
  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

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

  /* Process locked */
  __HAL_LOCK(hdac);

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

  /* Enable the Peripheral */
  __HAL_DAC_ENABLE(hdac, Channel);

  /* Check if software trigger enabled */
  if ((hdac->Instance->CR1 & (DAC_CR1_TEN | DAC_CR1_TSEL)) == DAC_TRIGGER_SOFTWARE)
  {
    /* Enable the selected DAC software conversion */
    SET_BIT(hdac->Instance->CR2, DAC_CR2_SWTRIG);
  }

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

  /* Process unlocked */
  __HAL_UNLOCK(hdac);

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Disables DAC and stop conversion of channel.
  * @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
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef *hdac, uint32_t Channel)
{
  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

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

  /* Disable the Peripheral */
  __HAL_DAC_DISABLE(hdac, Channel);

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

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Enables DAC and starts conversion of channel.
  * @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
  * @param  pData The source 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, const uint32_t *pData, uint32_t Length,
                                    uint32_t Alignment)
{
  HAL_StatusTypeDef status;
  uint32_t tmpreg;

  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

  /* 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;

  /* Set the DMA transfer complete callback for channel1 */
  hdac->DMA_Handle->XferCpltCallback = DAC_DMAConvCpltCh1;

  /* Set the DMA half block transfer complete callback for channel1 */
  hdac->DMA_Handle->XferHalfBlockCpltCallback = DAC_DMAHalfBlockConvCpltCh1;

  /* Set the DMA error callback for channel1 */
  hdac->DMA_Handle->XferErrorCallback = DAC_DMAErrorCh1;

  /* Enable the selected DAC channel1 DMA request */
  SET_BIT(hdac->Instance->CR1, DAC_CR1_DMAEN);

  /* Case of use of channel 1 */
  switch (Alignment)
  {
    case DAC_ALIGN_12B_R:
      /* Get DHR12R1 address */
      tmpreg = (uint32_t)&hdac->Instance->DHR12R;
      break;
    case DAC_ALIGN_12B_L:
      /* Get DHR12L1 address */
      tmpreg = (uint32_t)&hdac->Instance->DHR12L;
      break;
    default: /* case DAC_ALIGN_8B_R */
      /* Get DHR8R1 address */
      tmpreg = (uint32_t)&hdac->Instance->DHR8R;
      break;
  }

#if defined(DAC_CR1_DMAUDRIE)
    /* Enable the DAC DMA underrun interrupt */
    __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR);
#endif /* DAC_CR_DMAUDRIE1 */

    /* Enable the DMA Stream */
    status = HAL_DMA_Start_IT(hdac->DMA_Handle, (uint32_t)pData, tmpreg, Length);

  /* Process Unlocked */
  __HAL_UNLOCK(hdac);

  if (status == HAL_OK)
  {
    /* Enable the Peripheral */
    __HAL_DAC_ENABLE(hdac, Channel);
  }
  else
  {
    hdac->ErrorCode |= HAL_DAC_ERROR_DMA;
  }

  /* Return function status */
  return status;
}

/**
  * @brief  Disables DAC and stop conversion of channel.
  * @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
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef *hdac, uint32_t Channel)
{
  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

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

  /* Disable the selected DAC channel DMA request */
  hdac->Instance->CR1 &= ~(DAC_CR1_DMAEN << (Channel & 0x10UL));

  /* Disable the Peripheral */
  __HAL_DAC_DISABLE(hdac, Channel);

  /* Disable the DMA Stream */
  (void)HAL_DMA_Abort(hdac->DMA_Handle);

#if defined(DAC_CR1_DMAUDRIE)
  /* Disable the DAC DMA underrun interrupt */
  __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR);
#endif /* DAC_CR_DMAUDRIE */

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

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Handles DAC interrupt request
  *         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 !defined(DAC_SR_DMAUDR)
  UNUSED(hdac);
#else
  uint32_t itsource = hdac->Instance->CR1;
  uint32_t itflag   = hdac->Instance->SR;
#endif /* !DAC_SR_DMAUDR */

#if defined(DAC_SR_DMAUDR)
  if ((itsource & DAC_IT_DMAUDR) == DAC_IT_DMAUDR)
  {
    /* Check underrun flag of DAC channel 1 */
    if ((itflag & DAC_FLAG_DMAUDR) == DAC_FLAG_DMAUDR)
    {
      /* Change DAC state to error state */
      hdac->State = HAL_DAC_STATE_ERROR;

      /* Set DAC error code to channel1 DMA underrun error */
      SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_DMAUNDERRUNCH1);

      /* Clear the underrun flag */
      __HAL_DAC_CLEAR_FLAG(hdac, DAC_FLAG_DMAUDR);

      /* Disable the selected DAC channel1 DMA request */
      __HAL_DAC_DISABLE_IT(hdac, DAC_CR1_DMAEN);

      /* Error callback */
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
      hdac->DMAUnderrunCallbackCh1(hdac);
#else
      HAL_DAC_DMAUnderrunCallbackCh1(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
    }
  }
#endif /* DAC_SR_DMAUDR */
}

/**
  * @brief  Set the specified data holding register value for DAC channel.
  * @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
  * @param  Alignment Specifies the data alignment.
  *          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
  * @param  Data Data to be loaded in the selected data holding register.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef *hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data)
{
  __IO uint32_t tmp = 0UL;

  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

  /* Check the parameters */
  assert_param(IS_DAC_CHANNEL(Channel));
  assert_param(IS_DAC_ALIGN(Alignment));
  assert_param(IS_DAC_DATA(Data));

  tmp = (uint32_t)hdac->Instance;

  tmp += DAC_DHR12R_ALIGNMENT(Alignment);

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

  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Conversion complete callback in non-blocking mode for Channel1
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DAC_ConvCpltCallbackCh1(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_ConvCpltCallbackCh1 could be implemented in the user file
   */
}

/**
  * @brief  Conversion half Block DMA transfer callback in non-blocking mode for Channel1
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DAC_ConvHalfBlockCpltCallbackCh1(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_ConvHalfBlockCpltCallbackCh1 could be implemented in the user file
   */
}

/**
  * @brief  Error DAC callback for Channel1.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval None
  */
__weak void HAL_DAC_ErrorCallbackCh1(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_ErrorCallbackCh1 could be implemented in the user file
   */
}

/**
  * @brief  DMA underrun DAC callback for channel1.
  * @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
   */
}

/**
  * @}
  */

/** @defgroup DAC_Exported_Functions_Group3 Peripheral Control functions
  *  @brief    Peripheral Control functions
  *
@verbatim
  ==============================================================================
             ##### Peripheral Control functions #####
  ==============================================================================
    [..]  This section provides functions allowing to:
      (+) Configure channels.
      (+) Set the specified data holding register value for DAC channel.

@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.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  * @retval The selected DAC channel data output value.
  */
uint32_t HAL_DAC_GetValue(const DAC_HandleTypeDef *hdac, uint32_t Channel)
{
  uint32_t result;

  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

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

  result = hdac->Instance->DOR;

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

/**
  * @brief  Configures the selected DAC channel.
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @param  sConfig DAC configuration structure.
  * @param  Channel The selected DAC channel.
  *          This parameter can be one of the following values:
  *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_DAC_ConfigChannel(DAC_HandleTypeDef *hdac,
                                        const DAC_ChannelConfTypeDef *sConfig, uint32_t Channel)
{
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t tmpreg1;
  uint32_t tmpreg2;

  /* Check the DAC peripheral handle and channel configuration struct */
  if ((hdac == NULL) || (sConfig == NULL))
  {
    return HAL_ERROR;
  }

  /* Check the DAC parameters */
  assert_param(IS_DAC_TRIGGER(sConfig->DAC_Trigger));
  assert_param(IS_DAC_OUTPUT_BUFFER_STATE(sConfig->DAC_OutputBuffer));
  assert_param(IS_DAC_OUTPUT_SELECT(sConfig->DAC_OutputSelect));
  assert_param(IS_DAC_CHANNEL(Channel));
  assert_param(IS_DAC_VREFSRC(sConfig->DAC_VrefSrc));

  /* Process locked */
  __HAL_LOCK(hdac);

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

  /* Get the DAC CR value */
  tmpreg1 = hdac->Instance->CR1;

  /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
  tmpreg1 &= ~(((uint32_t)(DAC_CR1_MAMP | DAC_CR1_WAVE | DAC_CR1_TSEL | DAC_CR1_TEN | DAC_CR1_BOFF))
               << (Channel & 0x10UL));
  /* Configure for the selected DAC channel: buffer output, trigger */
  /* Set TSELx and TENx bits according to DAC_Trigger value */
  /* Set BOFFx bit according to DAC_OutputBuffer value */
  tmpreg2 = (sConfig->DAC_Trigger | sConfig->DAC_OutputBuffer);
  /* Calculate CR register value depending on DAC_Channel */
  tmpreg1 |= tmpreg2 << (Channel & 0x10UL);
  /* Write to DAC CR */
  hdac->Instance->CR1 = tmpreg1;
  /* Disable wave generation */
  CLEAR_BIT(hdac->Instance->CR1, (DAC_CR1_WAVE << (Channel & 0x10UL)));

  /* Configure reference voltage and output buffer */
  MODIFY_REG(hdac->Instance->CR2, (DAC_CR2_SWTRIG | DAC_CR2_VREFSEL | DAC_CR2_INTEREN), (sConfig->DAC_OutputSelect | sConfig->DAC_VrefSrc));
  
  /* Change DAC state */
  hdac->State = HAL_DAC_STATE_READY;

  /* Process unlocked */
  __HAL_UNLOCK(hdac);

  /* Return function status */
  return status;
}

/**
  * @}
  */

/** @defgroup DAC_Exported_Functions_Group4 Peripheral State and Errors functions
  *  @brief   Peripheral State and Errors functions
  *
@verbatim
  ==============================================================================
            ##### Peripheral State and Errors functions #####
  ==============================================================================
    [..]
    This subsection provides functions allowing to
      (+) Check the DAC state.
      (+) Check the DAC Errors.

@endverbatim
  * @{
  */

/**
  * @brief  return the DAC handle state
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval HAL state
  */
HAL_DAC_StateTypeDef HAL_DAC_GetState(const DAC_HandleTypeDef *hdac)
{
  /* Return DAC handle state */
  return hdac->State;
}


/**
  * @brief  Return the DAC error code
  * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  *         the configuration information for the specified DAC.
  * @retval DAC Error Code
  */
uint32_t HAL_DAC_GetError(const DAC_HandleTypeDef *hdac)
{
  return hdac->ErrorCode;
}

/**
  * @}
  */

/**
  * @}
  */

/** @addtogroup DAC_Exported_Functions
  * @{
  */

/** @addtogroup DAC_Exported_Functions_Group1
  * @{
  */
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
/**
  * @brief  Register a User DAC Callback
  *         To be used instead of the weak (overridden) predefined callback
  * @note   The HAL_DAC_RegisterCallback() may be called before HAL_DAC_Init() in HAL_DAC_STATE_RESET to register
  *         callbacks for HAL_DAC_MSPINIT_CB_ID and HAL_DAC_MSPDEINIT_CB_ID
  * @param  hdac DAC handle
  * @param  CallbackID ID of the callback to be registered
  *         This parameter can be one of the following values:
  *          @arg @ref HAL_DAC_ERROR_INVALID_CALLBACK   DAC Error Callback ID
  *          @arg @ref HAL_DAC_CH1_COMPLETE_CB_ID       DAC CH1 Complete Callback ID
  *          @arg @ref HAL_DAC_CH1_HALFBLOCK_COMPLETE_CB_ID  DAC CH1 Half Block Complete Callback ID
  *          @arg @ref HAL_DAC_CH1_ERROR_ID             DAC CH1 Error Callback ID
  *          @arg @ref HAL_DAC_CH1_UNDERRUN_CB_ID       DAC CH1 UnderRun Callback ID
  *          @arg @ref HAL_DAC_MSPINIT_CB_ID            DAC MSP Init Callback ID
  *          @arg @ref HAL_DAC_MSPDEINIT_CB_ID          DAC MSP DeInit Callback ID
  *
  * @param  pCallback pointer to the Callback function
  * @retval status
  */
HAL_StatusTypeDef HAL_DAC_RegisterCallback(DAC_HandleTypeDef *hdac, HAL_DAC_CallbackIDTypeDef CallbackID,
                                           pDAC_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

  if (pCallback == NULL)
  {
    /* Update the error code */
    hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
    return HAL_ERROR;
  }

  if (hdac->State == HAL_DAC_STATE_READY)
  {
    switch (CallbackID)
    {
      case HAL_DAC_CH1_COMPLETE_CB_ID :
        hdac->ConvCpltCallbackCh1 = pCallback;
        break;
      case HAL_DAC_CH1_HALFBLOCK_COMPLETE_CB_ID :
        hdac->ConvHalfBlockCpltCallbackCh1 = pCallback;
        break;
      case HAL_DAC_CH1_ERROR_ID :
        hdac->ErrorCallbackCh1 = pCallback;
        break;
      case HAL_DAC_CH1_UNDERRUN_CB_ID :
        hdac->DMAUnderrunCallbackCh1 = pCallback;
        break;

      case HAL_DAC_MSPINIT_CB_ID :
        hdac->MspInitCallback = pCallback;
        break;
      case HAL_DAC_MSPDEINIT_CB_ID :
        hdac->MspDeInitCallback = pCallback;
        break;
      default :
        /* Update the error code */
        hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hdac->State == HAL_DAC_STATE_RESET)
  {
    switch (CallbackID)
    {
      case HAL_DAC_MSPINIT_CB_ID :
        hdac->MspInitCallback = pCallback;
        break;
      case HAL_DAC_MSPDEINIT_CB_ID :
        hdac->MspDeInitCallback = pCallback;
        break;
      default :
        /* Update the error code */
        hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
    /* update return status */
    status =  HAL_ERROR;
  }

  return status;
}

/**
  * @brief  Unregister a User DAC Callback
  *         DAC Callback is redirected to the weak (overridden) predefined callback
  * @note   The HAL_DAC_UnRegisterCallback() may be called before HAL_DAC_Init() in HAL_DAC_STATE_RESET to un-register
  *         callbacks for HAL_DAC_MSPINIT_CB_ID and HAL_DAC_MSPDEINIT_CB_ID
  * @param  hdac DAC handle
  * @param  CallbackID ID of the callback to be unregistered
  *         This parameter can be one of the following values:
  *          @arg @ref HAL_DAC_CH1_COMPLETE_CB_ID          DAC CH1 transfer Complete Callback ID
  *          @arg @ref HAL_DAC_CH1_HALFBLOCK_COMPLETE_CB_ID     DAC CH1 Half Block Complete Callback ID
  *          @arg @ref HAL_DAC_CH1_ERROR_ID                DAC CH1 Error Callback ID
  *          @arg @ref HAL_DAC_CH1_UNDERRUN_CB_ID          DAC CH1 UnderRun Callback ID
  *          @arg @ref HAL_DAC_MSPINIT_CB_ID               DAC MSP Init Callback ID
  *          @arg @ref HAL_DAC_MSPDEINIT_CB_ID             DAC MSP DeInit Callback ID
  *          @arg @ref HAL_DAC_ALL_CB_ID                   DAC All callbacks
  * @retval status
  */
HAL_StatusTypeDef HAL_DAC_UnRegisterCallback(DAC_HandleTypeDef *hdac, HAL_DAC_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;

  /* Check the DAC peripheral handle */
  if (hdac == NULL)
  {
    return HAL_ERROR;
  }

  if (hdac->State == HAL_DAC_STATE_READY)
  {
    switch (CallbackID)
    {
      case HAL_DAC_CH1_COMPLETE_CB_ID :
        hdac->ConvCpltCallbackCh1 = HAL_DAC_ConvCpltCallbackCh1;
        break;
      case HAL_DAC_CH1_HALFBLOCK_COMPLETE_CB_ID :
        hdac->ConvHalfBlockCpltCallbackCh1 = HAL_DAC_ConvHalfBlockCpltCallbackCh1;
        break;
      case HAL_DAC_CH1_ERROR_ID :
        hdac->ErrorCallbackCh1 = HAL_DAC_ErrorCallbackCh1;
        break;
      case HAL_DAC_CH1_UNDERRUN_CB_ID :
        hdac->DMAUnderrunCallbackCh1 = HAL_DAC_DMAUnderrunCallbackCh1;
        break;

      case HAL_DAC_MSPINIT_CB_ID :
        hdac->MspInitCallback = HAL_DAC_MspInit;
        break;
      case HAL_DAC_MSPDEINIT_CB_ID :
        hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
        break;
      case HAL_DAC_ALL_CB_ID :
        hdac->ConvCpltCallbackCh1 = HAL_DAC_ConvCpltCallbackCh1;
        hdac->ConvHalfBlockCpltCallbackCh1 = HAL_DAC_ConvHalfBlockCpltCallbackCh1;
        hdac->ErrorCallbackCh1 = HAL_DAC_ErrorCallbackCh1;
        hdac->DMAUnderrunCallbackCh1 = HAL_DAC_DMAUnderrunCallbackCh1;

        hdac->MspInitCallback = HAL_DAC_MspInit;
        hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
        break;
      default :
        /* Update the error code */
        hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (hdac->State == HAL_DAC_STATE_RESET)
  {
    switch (CallbackID)
    {
      case HAL_DAC_MSPINIT_CB_ID :
        hdac->MspInitCallback = HAL_DAC_MspInit;
        break;
      case HAL_DAC_MSPDEINIT_CB_ID :
        hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
        break;
      default :
        /* Update the error code */
        hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
        /* update return status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
    /* update return status */
    status =  HAL_ERROR;
  }

  return status;
}
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

/**
  * @}
  */

/**
  * @}
  */

/** @addtogroup DAC_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_DMAConvCpltCh1(DMA_HandleTypeDef *hdma)
{
  DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;

#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  hdac->ConvCpltCallbackCh1(hdac);
#else
  HAL_DAC_ConvCpltCallbackCh1(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

  hdac->State = HAL_DAC_STATE_READY;
}

/**
  * @brief  DMA half block 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_DMAHalfBlockConvCpltCh1(DMA_HandleTypeDef *hdma)
{
  DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  /* Conversion complete callback */
#if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  hdac->ConvHalfBlockCpltCallbackCh1(hdac);
#else
  HAL_DAC_ConvHalfBlockCpltCallbackCh1(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_DMAErrorCh1(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->ErrorCallbackCh1(hdac);
#else
  HAL_DAC_ErrorCallbackCh1(hdac);
#endif /* USE_HAL_DAC_REGISTER_CALLBACKS */

  hdac->State = HAL_DAC_STATE_READY;
}

/**
  * @}
  */

/**
  * @}
  */

#endif /* HAL_DAC_MODULE_ENABLED */
/**
  * @}
  */

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