text: /**
    ******************************************************************************
    * @file    stm32f30x_dac.h
    * @author  MCD Application Team
    * @version V1.0.0
    * @date    04-September-2012
    * @brief   This file contains all the functions prototypes for the DAC firmware 
    *          library.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
    *
    * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
    * You may not use this file except in compliance with the License.
    * You may obtain a copy of the License at:
    *
    *        http://www.st.com/software_license_agreement_liberty_v2
    *
    * Unless required by applicable law or agreed to in writing, software 
    * distributed under the License is distributed on an "AS IS" BASIS, 
    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    * See the License for the specific language governing permissions and
    * limitations under the License.
    *
    ******************************************************************************
    */
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32F30x_DAC_H
  #define __STM32F30x_DAC_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f30x.h"
  
  /** @addtogroup STM32F30x_StdPeriph_Driver
    * @{
    */
  
  /** @addtogroup DAC
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  #define DAC_CR_DMAUDRIE                  ((uint32_t)0x00002000)        /*!< DAC channel DMA underrun interrupt enable */
  
  /** 
    * @brief  DAC Init 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_WaveGeneration;               /*!< Specifies whether DAC channel noise waves or triangle waves
                                                    are generated, or whether no wave is generated.
                                                    This parameter can be a value of @ref DAC_wave_generation */
  
    uint32_t DAC_LFSRUnmask_TriangleAmplitude; /*!< Specifies the LFSR mask for noise wave generation or
                                                    the maximum amplitude triangle generation for the DAC channel. 
                                                    This parameter can be a value of @ref DAC_lfsrunmask_triangleamplitude */
  
    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_InitTypeDef;
  
  /* Exported constants --------------------------------------------------------*/
  
  /** @defgroup DAC_Exported_Constants
    * @{
    */
  
  /** @defgroup DAC_trigger_selection 
    * @{
    */
  
  #define DAC_Trigger_None                   ((uint32_t)0x00000000) /*!< Conversion is automatic once the DAC1_DHRxxxx register 
                                                                         has been loaded, and not by external trigger */
  #define DAC_Trigger_T2_TRGO                ((uint32_t)0x00000024) /*!< TIM2 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T3_TRGO                ((uint32_t)0x0000000C) /*!< TIM8 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T4_TRGO                ((uint32_t)0x0000002C) /*!< TIM4 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T6_TRGO                ((uint32_t)0x00000004) /*!< TIM6 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T7_TRGO                ((uint32_t)0x00000014) /*!< TIM7 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T8_TRGO                ((uint32_t)0x0000000C) /*!< TIM8 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_T15_TRGO               ((uint32_t)0x0000001C) /*!< TIM15 TRGO selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_Ext_IT9                ((uint32_t)0x00000034) /*!< EXTI Line9 event selected as external conversion trigger for DAC channel */
  #define DAC_Trigger_Software               ((uint32_t)0x0000003C) /*!< Conversion started by software trigger for DAC channel */
  
  #define IS_DAC_TRIGGER(TRIGGER) (((TRIGGER) == DAC_Trigger_None)     || \
                                   ((TRIGGER) == DAC_Trigger_T2_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T3_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T4_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T6_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T7_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T8_TRGO)  || \
                                   ((TRIGGER) == DAC_Trigger_T15_TRGO) || \
                                   ((TRIGGER) == DAC_Trigger_Ext_IT9)  || \
                                   ((TRIGGER) == DAC_Trigger_Software))
  
  /**
    * @}
    */
  
  /** @defgroup DAC_wave_generation 
    * @{
    */
  
  #define DAC_WaveGeneration_None            ((uint32_t)0x00000000)
  #define DAC_WaveGeneration_Noise           ((uint32_t)0x00000040)
  #define DAC_WaveGeneration_Triangle        ((uint32_t)0x00000080)
  #define IS_DAC_GENERATE_WAVE(WAVE) (((WAVE) == DAC_WaveGeneration_None)  || \
                                      ((WAVE) == DAC_WaveGeneration_Noise) || \
                                      ((WAVE) == DAC_WaveGeneration_Triangle))
  /**
    * @}
    */
  
  /** @defgroup DAC_lfsrunmask_triangleamplitude
    * @{
    */
  
  #define DAC_LFSRUnmask_Bit0                ((uint32_t)0x00000000) /*!< Unmask DAC channel LFSR bit0 for noise wave generation */
  #define DAC_LFSRUnmask_Bits1_0             ((uint32_t)0x00000100) /*!< Unmask DAC channel LFSR bit[1:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits2_0             ((uint32_t)0x00000200) /*!< Unmask DAC channel LFSR bit[2:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits3_0             ((uint32_t)0x00000300) /*!< Unmask DAC channel LFSR bit[3:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits4_0             ((uint32_t)0x00000400) /*!< Unmask DAC channel LFSR bit[4:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits5_0             ((uint32_t)0x00000500) /*!< Unmask DAC channel LFSR bit[5:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits6_0             ((uint32_t)0x00000600) /*!< Unmask DAC channel LFSR bit[6:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits7_0             ((uint32_t)0x00000700) /*!< Unmask DAC channel LFSR bit[7:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits8_0             ((uint32_t)0x00000800) /*!< Unmask DAC channel LFSR bit[8:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits9_0             ((uint32_t)0x00000900) /*!< Unmask DAC channel LFSR bit[9:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits10_0            ((uint32_t)0x00000A00) /*!< Unmask DAC channel LFSR bit[10:0] for noise wave generation */
  #define DAC_LFSRUnmask_Bits11_0            ((uint32_t)0x00000B00) /*!< Unmask DAC channel LFSR bit[11:0] for noise wave generation */
  #define DAC_TriangleAmplitude_1            ((uint32_t)0x00000000) /*!< Select max triangle amplitude of 1 */
  #define DAC_TriangleAmplitude_3            ((uint32_t)0x00000100) /*!< Select max triangle amplitude of 3 */
  #define DAC_TriangleAmplitude_7            ((uint32_t)0x00000200) /*!< Select max triangle amplitude of 7 */
  #define DAC_TriangleAmplitude_15           ((uint32_t)0x00000300) /*!< Select max triangle amplitude of 15 */
  #define DAC_TriangleAmplitude_31           ((uint32_t)0x00000400) /*!< Select max triangle amplitude of 31 */
  #define DAC_TriangleAmplitude_63           ((uint32_t)0x00000500) /*!< Select max triangle amplitude of 63 */
  #define DAC_TriangleAmplitude_127          ((uint32_t)0x00000600) /*!< Select max triangle amplitude of 127 */
  #define DAC_TriangleAmplitude_255          ((uint32_t)0x00000700) /*!< Select max triangle amplitude of 255 */
  #define DAC_TriangleAmplitude_511          ((uint32_t)0x00000800) /*!< Select max triangle amplitude of 511 */
  #define DAC_TriangleAmplitude_1023         ((uint32_t)0x00000900) /*!< Select max triangle amplitude of 1023 */
  #define DAC_TriangleAmplitude_2047         ((uint32_t)0x00000A00) /*!< Select max triangle amplitude of 2047 */
  #define DAC_TriangleAmplitude_4095         ((uint32_t)0x00000B00) /*!< Select max triangle amplitude of 4095 */
  
  #define IS_DAC_LFSR_UNMASK_TRIANGLE_AMPLITUDE(VALUE) (((VALUE) == DAC_LFSRUnmask_Bit0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits1_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits2_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits3_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits4_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits5_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits6_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits7_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits8_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits9_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits10_0) || \
                                                        ((VALUE) == DAC_LFSRUnmask_Bits11_0) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_1) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_3) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_7) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_15) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_31) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_63) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_127) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_255) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_511) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_1023) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_2047) || \
                                                        ((VALUE) == DAC_TriangleAmplitude_4095))
  /**
    * @}
    */
  
  /** @defgroup DAC_output_buffer 
    * @{
    */
  
  #define DAC_OutputBuffer_Enable            ((uint32_t)0x00000000)
  #define DAC_OutputBuffer_Disable           ((uint32_t)0x00000002)
  #define IS_DAC_OUTPUT_BUFFER_STATE(STATE) (((STATE) == DAC_OutputBuffer_Enable) || \
                                             ((STATE) == DAC_OutputBuffer_Disable))
  /**
    * @}
    */
  
  /** @defgroup DAC_Channel_selection 
    * @{
    */
  
  #define DAC_Channel_1                      ((uint32_t)0x00000000)
  #define DAC_Channel_2                      ((uint32_t)0x00000010)
  #define IS_DAC_CHANNEL(CHANNEL) (((CHANNEL) == DAC_Channel_1) || \
                                   ((CHANNEL) == DAC_Channel_2))
  /**
    * @}
    */
  
  /** @defgroup DAC_data_alignement 
    * @{
    */
  
  #define DAC_Align_12b_R                    ((uint32_t)0x00000000)
  #define DAC_Align_12b_L                    ((uint32_t)0x00000004)
  #define DAC_Align_8b_R                     ((uint32_t)0x00000008)
  #define IS_DAC_ALIGN(ALIGN) (((ALIGN) == DAC_Align_12b_R) || \
                               ((ALIGN) == DAC_Align_12b_L) || \
                               ((ALIGN) == DAC_Align_8b_R))
  /**
    * @}
    */
  
  /** @defgroup DAC_wave_generation 
    * @{
    */
  
  #define DAC_Wave_Noise                     ((uint32_t)0x00000040)
  #define DAC_Wave_Triangle                  ((uint32_t)0x00000080)
  #define IS_DAC_WAVE(WAVE) (((WAVE) == DAC_Wave_Noise) || \
                             ((WAVE) == DAC_Wave_Triangle))
  /**
    * @}
    */
  
  /** @defgroup DAC_data 
    * @{
    */
  
  #define IS_DAC_DATA(DATA) ((DATA) <= 0xFFF0) 
  /**
    * @}
    */
    
  /** @defgroup DAC_interrupts_definition 
    * @{
    */   
  #define DAC_IT_DMAUDR                      ((uint32_t)0x00002000)  
  #define IS_DAC_IT(IT) (((IT) == DAC_IT_DMAUDR)) 
  
  /**
    * @}
    */ 
  
  /** @defgroup DAC_flags_definition 
    * @{
    */ 
    
  #define DAC_FLAG_DMAUDR                    ((uint32_t)0x00002000)  
  #define IS_DAC_FLAG(FLAG) (((FLAG) == DAC_FLAG_DMAUDR))  
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Exported macro ------------------------------------------------------------*/
  /* Exported functions --------------------------------------------------------*/  
  
  /*  Function used to set the DAC configuration to the default reset state *****/  
  void DAC_DeInit(void);
  
  /*  DAC channels configuration: trigger, output buffer, data format functions */
  void DAC_Init(uint32_t DAC_Channel, DAC_InitTypeDef* DAC_InitStruct);
  void DAC_StructInit(DAC_InitTypeDef* DAC_InitStruct);
  void DAC_Cmd(uint32_t DAC_Channel, FunctionalState NewState);
  void DAC_SoftwareTriggerCmd(uint32_t DAC_Channel, FunctionalState NewState);
  void DAC_DualSoftwareTriggerCmd(FunctionalState NewState);
  void DAC_WaveGenerationCmd(uint32_t DAC_Channel, uint32_t DAC_Wave, FunctionalState NewState);
  void DAC_SetChannel1Data(uint32_t DAC_Align, uint16_t Data);
  void DAC_SetChannel2Data(uint32_t DAC_Align, uint16_t Data);
  void DAC_SetDualChannelData(uint32_t DAC_Align, uint16_t Data2, uint16_t Data1);
  uint16_t DAC_GetDataOutputValue(uint32_t DAC_Channel);
  
  /* DMA management functions ***************************************************/
  void DAC_DMACmd(uint32_t DAC_Channel, FunctionalState NewState);
  
  /* Interrupts and flags management functions **********************************/
  void DAC_ITConfig(uint32_t DAC_Channel, uint32_t DAC_IT, FunctionalState NewState);
  FlagStatus DAC_GetFlagStatus(uint32_t DAC_Channel, uint32_t DAC_FLAG);
  void DAC_ClearFlag(uint32_t DAC_Channel, uint32_t DAC_FLAG);
  ITStatus DAC_GetITStatus(uint32_t DAC_Channel, uint32_t DAC_IT);
  void DAC_ClearITPendingBit(uint32_t DAC_Channel, uint32_t DAC_IT);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /*__STM32F30x_DAC_H */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  