text: /**
    ******************************************************************************
    * @file    stm32l1xx_hal_dac.h
    * @author  MCD Application Team
    * @brief   Header file of DAC HAL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32L1xx_HAL_DAC_H
  #define __STM32L1xx_HAL_DAC_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
     
  /* Includes ------------------------------------------------------------------*/
  #include "stm32l1xx_hal_def.h"
  
  /** @addtogroup STM32L1xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup DAC
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  
  /** @defgroup DAC_Exported_Types DAC Exported Types
    * @{
    */
  
  /** 
    * @brief  HAL State structures definition  
    */ 
  typedef enum
  {
    HAL_DAC_STATE_RESET             = 0x00,  /*!< DAC not yet initialized or disabled  */
    HAL_DAC_STATE_READY             = 0x01,  /*!< DAC initialized and ready for use    */
    HAL_DAC_STATE_BUSY              = 0x02,  /*!< DAC internal processing is ongoing   */
    HAL_DAC_STATE_TIMEOUT           = 0x03,  /*!< DAC timeout state                    */
    HAL_DAC_STATE_ERROR             = 0x04   /*!< DAC error state                      */
   
  }HAL_DAC_StateTypeDef;
   
  /** 
    * @brief  DAC handle Structure definition  
    */ 
  typedef struct
  {
    DAC_TypeDef                 *Instance;     /*!< Register base address             */
    
    __IO HAL_DAC_StateTypeDef   State;         /*!< DAC communication state           */
  
    HAL_LockTypeDef             Lock;          /*!< DAC locking object                */
    
    DMA_HandleTypeDef           *DMA_Handle1;  /*!< Pointer DMA handler for channel 1 */
    
    DMA_HandleTypeDef           *DMA_Handle2;  /*!< Pointer DMA handler for channel 2 */ 
    
    __IO uint32_t               ErrorCode;     /*!< DAC Error code                    */
    
  }DAC_HandleTypeDef;
  
  /** 
    * @brief   DAC Configuration regular Channel structure definition  
    */ 
  typedef struct
  {
    uint32_t DAC_Trigger;       /*!< Specifies the external trigger for the selected DAC channel.
                                     This parameter can be a value of @ref DAC_trigger_selection */
    
    uint32_t DAC_OutputBuffer;  /*!< Specifies whether the DAC channel output buffer is enabled or disabled.
                                     This parameter can be a value of @ref DAC_output_buffer */
    
  }DAC_ChannelConfTypeDef;
  
  /**
    * @}
    */
  
  /* Exported constants --------------------------------------------------------*/
  
  /** @defgroup DAC_Exported_Constants DAC Exported Constants
    * @{
    */
  
  /** @defgroup DAC_Error_Code DAC Error Code
    * @{
    */
  #define  HAL_DAC_ERROR_NONE              0x00    /*!< No error                          */
  #define  HAL_DAC_ERROR_DMAUNDERRUNCH1    0x01    /*!< DAC channel1 DMA underrun error   */
  #define  HAL_DAC_ERROR_DMAUNDERRUNCH2    0x02    /*!< DAC channel2 DMA underrun error   */
  #define  HAL_DAC_ERROR_DMA               0x04    /*!< DMA error                         */   
  /**
    * @}
    */
    
  /** @defgroup DAC_trigger_selection DAC trigger selection
    * @{
    */
  #define DAC_TRIGGER_NONE                   (0x00000000U) /*!< Conversion is automatic once the DAC1_DHRxxxx register 
                                                                         has been loaded, and not by external trigger */
  #define DAC_TRIGGER_T6_TRGO                ((uint32_t)                                                    DAC_CR_TEN1)  /*!< TIM6 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_T7_TRGO                ((uint32_t)(                 DAC_CR_TSEL1_1                  | DAC_CR_TEN1)) /*!< TIM7 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_T9_TRGO                ((uint32_t)(                 DAC_CR_TSEL1_1 | DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM9 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_T2_TRGO                ((uint32_t)(DAC_CR_TSEL1_2                                   | DAC_CR_TEN1)) /*!< TIM2 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_T4_TRGO                ((uint32_t)(DAC_CR_TSEL1_2                  | DAC_CR_TSEL1_0 | DAC_CR_TEN1)) /*!< TIM4 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_EXT_IT9                ((uint32_t)(DAC_CR_TSEL1_2 | DAC_CR_TSEL1_1                  | DAC_CR_TEN1)) /*!< EXTI Line9 event selected as external conversion trigger for DAC channel */
  #define DAC_TRIGGER_SOFTWARE               ((uint32_t)(DAC_CR_TSEL1                                     | DAC_CR_TEN1)) /*!< Conversion started by software trigger for DAC channel */
  
  /**
    * @}
    */
  
  /** @defgroup DAC_output_buffer DAC output buffer
    * @{
    */
  #define DAC_OUTPUTBUFFER_ENABLE            (0x00000000U)
  #define DAC_OUTPUTBUFFER_DISABLE           ((uint32_t)DAC_CR_BOFF1)
  
  /**
    * @}
    */
  
  /** @defgroup DAC_Channel_selection DAC Channel selection
    * @{
    */
  #define DAC_CHANNEL_1                      (0x00000000U)
  #define DAC_CHANNEL_2                      (0x00000010U)
  
  /**
    * @}
    */
  
  /** @defgroup DAC_data_alignement DAC data alignement
    * @{
    */
  #define DAC_ALIGN_12B_R                    (0x00000000U)
  #define DAC_ALIGN_12B_L                    (0x00000004U)
  #define DAC_ALIGN_8B_R                     (0x00000008U)
  
  /**
    * @}
    */
  
  /** @defgroup DAC_flags_definition DAC flags definition
    * @{
    */ 
  #define DAC_FLAG_DMAUDR1                   ((uint32_t)DAC_SR_DMAUDR1)
  #define DAC_FLAG_DMAUDR2                   ((uint32_t)DAC_SR_DMAUDR2)   
  
  /**
    * @}
    */
  
  /** @defgroup DAC_IT_definition DAC IT definition
    * @{
    */ 
  #define DAC_IT_DMAUDR1                   ((uint32_t)DAC_SR_DMAUDR1)
  #define DAC_IT_DMAUDR2                   ((uint32_t)DAC_SR_DMAUDR2)   
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Exported macro ------------------------------------------------------------*/
  
  /** @defgroup DAC_Exported_Macros DAC Exported Macros
    * @{
    */
  
  /** @brief Reset DAC handle state
    * @param  __HANDLE__: specifies the DAC handle.
    * @retval None
    */
  #define __HAL_DAC_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_DAC_STATE_RESET)
  
  /** @brief Enable the DAC channel
    * @param  __HANDLE__: specifies the DAC handle.
    * @param  __DAC_Channel__: specifies the DAC channel
    * @retval None
    */
  #define __HAL_DAC_ENABLE(__HANDLE__, __DAC_Channel__) \
  ((__HANDLE__)->Instance->CR |=  (DAC_CR_EN1 << (__DAC_Channel__)))
  
  /** @brief Disable the DAC channel
    * @param  __HANDLE__: specifies the DAC handle
    * @param  __DAC_Channel__: specifies the DAC channel.
    * @retval None
    */
  #define __HAL_DAC_DISABLE(__HANDLE__, __DAC_Channel__) \
  ((__HANDLE__)->Instance->CR &=  ~(DAC_CR_EN1 << (__DAC_Channel__)))
   
  
  /** @brief Enable the DAC interrupt
    * @param  __HANDLE__: specifies the DAC handle
    * @param  __INTERRUPT__: specifies the DAC interrupt.
    *          This parameter can be any combination of the following values:
    *            @arg DAC_IT_DMAUDR1: DAC channel 1 DMA underrun interrupt
    *            @arg DAC_IT_DMAUDR2: DAC channel 2 DMA underrun interrupt
    * @retval None
    */
  #define __HAL_DAC_ENABLE_IT(__HANDLE__, __INTERRUPT__) (((__HANDLE__)->Instance->CR) |= (__INTERRUPT__))
  
  /** @brief Disable the DAC interrupt
    * @param  __HANDLE__: specifies the DAC handle
    * @param  __INTERRUPT__: specifies the DAC interrupt.
    *          This parameter can be any combination of the following values:
    *            @arg DAC_IT_DMAUDR1: DAC channel 1 DMA underrun interrupt
    *            @arg DAC_IT_DMAUDR2: DAC channel 2 DMA underrun interrupt
    * @retval None
    */
  #define __HAL_DAC_DISABLE_IT(__HANDLE__, __INTERRUPT__) (((__HANDLE__)->Instance->CR) &= ~(__INTERRUPT__))
  
  /** @brief  Checks if the specified DAC interrupt source is enabled or disabled.
    * @param __HANDLE__: DAC handle
    * @param __INTERRUPT__: DAC interrupt source to check
    *          This parameter can be any combination of the following values:
    *            @arg DAC_IT_DMAUDR1: DAC channel 1 DMA underrun interrupt
    *            @arg DAC_IT_DMAUDR2: DAC channel 2 DMA underrun interrupt
    * @retval State of interruption (SET or RESET)
    */
  #define __HAL_DAC_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) (((__HANDLE__)->Instance->CR & (__INTERRUPT__)) == (__INTERRUPT__))
      
  /** @brief  Get the selected DAC's flag status.
    * @param  __HANDLE__: specifies the DAC handle.
    * @param  __FLAG__: specifies the DAC flag to get.
    *          This parameter can be any combination of the following values:
    *            @arg DAC_FLAG_DMAUDR1: DAC channel 1 DMA underrun flag
    *            @arg DAC_FLAG_DMAUDR2: DAC channel 2 DMA underrun flag
    * @retval None
    */
  #define __HAL_DAC_GET_FLAG(__HANDLE__, __FLAG__) ((((__HANDLE__)->Instance->SR) & (__FLAG__)) == (__FLAG__))
  
  /** @brief  Clear the DAC's flag.
    * @param  __HANDLE__: specifies the DAC handle.
    * @param  __FLAG__: specifies the DAC flag to clear.
    *          This parameter can be any combination of the following values:
    *            @arg DAC_FLAG_DMAUDR1: DAC channel 1 DMA underrun flag
    *            @arg DAC_FLAG_DMAUDR2: DAC channel 2 DMA underrun flag
    * @retval None
    */
  #define __HAL_DAC_CLEAR_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR) = (__FLAG__))
  
  /**
    * @}
    */ 
  
  /* Private macro -------------------------------------------------------------*/
  
  /** @defgroup DAC_Private_Macros DAC Private Macros
    * @{
    */
  #define IS_DAC_TRIGGER(TRIGGER) (((TRIGGER) == DAC_TRIGGER_NONE)    || \
                                   ((TRIGGER) == DAC_TRIGGER_T6_TRGO) || \
                                   ((TRIGGER) == DAC_TRIGGER_T7_TRGO) || \
                                   ((TRIGGER) == DAC_TRIGGER_T9_TRGO) || \
                                   ((TRIGGER) == DAC_TRIGGER_T2_TRGO) || \
                                   ((TRIGGER) == DAC_TRIGGER_T4_TRGO) || \
                                   ((TRIGGER) == DAC_TRIGGER_EXT_IT9) || \
                                   ((TRIGGER) == DAC_TRIGGER_SOFTWARE))
  
  #define IS_DAC_OUTPUT_BUFFER_STATE(STATE) (((STATE) == DAC_OUTPUTBUFFER_ENABLE) || \
                                             ((STATE) == DAC_OUTPUTBUFFER_DISABLE))
  
  #define IS_DAC_CHANNEL(CHANNEL) (((CHANNEL) == DAC_CHANNEL_1) || \
                                   ((CHANNEL) == DAC_CHANNEL_2))
  
  #define IS_DAC_ALIGN(ALIGN) (((ALIGN) == DAC_ALIGN_12B_R) || \
                               ((ALIGN) == DAC_ALIGN_12B_L) || \
                               ((ALIGN) == DAC_ALIGN_8B_R))
  
  #define IS_DAC_DATA(DATA) ((DATA) <= 0xFFF0)
  
  #define DAC_DHR12R1_ALIGNMENT(__ALIGNMENT__) ((0x00000008U) + (__ALIGNMENT__))
  
  #define DAC_DHR12R2_ALIGNMENT(__ALIGNMENT__) ((0x00000014U) + (__ALIGNMENT__))
  
  #define DAC_DHR12RD_ALIGNMENT(__ALIGNMENT__) ((0x00000020U) + (__ALIGNMENT__))
  
  /**
    * @}
    */
    
  
  /* Include DAC HAL Extension module */
  #include "stm32l1xx_hal_dac_ex.h"
  
  /* Exported functions --------------------------------------------------------*/
  
  /** @addtogroup DAC_Exported_Functions
    * @{
    */
  
  /** @addtogroup DAC_Exported_Functions_Group1
    * @{
    */
  /* Initialization and de-initialization functions *****************************/ 
  HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef* hdac);
  HAL_StatusTypeDef HAL_DAC_DeInit(DAC_HandleTypeDef* hdac);
  void HAL_DAC_MspInit(DAC_HandleTypeDef* hdac);
  void HAL_DAC_MspDeInit(DAC_HandleTypeDef* hdac);
  
  /**
    * @}
    */
  
  /** @addtogroup DAC_Exported_Functions_Group2
    * @{
    */
  /* IO operation functions *****************************************************/
  HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef* hdac, uint32_t Channel);
  HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef* hdac, uint32_t Channel);
  HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t* pData, uint32_t Length, uint32_t Alignment);
  HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef* hdac, uint32_t Channel);
  HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef* hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data);
  uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef* hdac, uint32_t Channel);
  
  /**
    * @}
    */
  
  /** @addtogroup DAC_Exported_Functions_Group2
    * @{
    */
  /* Peripheral Control functions ***********************************************/
  HAL_StatusTypeDef HAL_DAC_ConfigChannel(DAC_HandleTypeDef* hdac, DAC_ChannelConfTypeDef* sConfig, uint32_t Channel);
  
  /**
    * @}
    */
  
  /** @addtogroup DAC_Exported_Functions_Group2
    * @{
    */
  /* Peripheral State functions *************************************************/
  HAL_DAC_StateTypeDef HAL_DAC_GetState(DAC_HandleTypeDef* hdac);
  void HAL_DAC_IRQHandler(DAC_HandleTypeDef* hdac);
  uint32_t HAL_DAC_GetError(DAC_HandleTypeDef *hdac);
  
  void HAL_DAC_ConvCpltCallbackCh1(DAC_HandleTypeDef* hdac);
  void HAL_DAC_ConvHalfCpltCallbackCh1(DAC_HandleTypeDef* hdac);
  void HAL_DAC_ErrorCallbackCh1(DAC_HandleTypeDef *hdac);
  void HAL_DAC_DMAUnderrunCallbackCh1(DAC_HandleTypeDef *hdac);
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
    
  #ifdef __cplusplus
  }
  #endif
  
  #endif /*__STM32L1xx_HAL_DAC_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  
  