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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f1xx_hal_dac.c
  4.   * @author  MCD Application Team
  5.   * @brief   DAC HAL module driver.
  6.   *         This file provides firmware functions to manage the following
  7.   *         functionalities of the Digital to Analog Converter (DAC) peripheral:
  8.   *           + Initialization and de-initialization functions
  9.   *           + IO operation functions
  10.   *           + Peripheral Control functions
  11.   *           + Peripheral State and Errors functions
  12.   *
  13.   *
  14.   @verbatim
  15.   ==============================================================================
  16.                       ##### DAC Peripheral features #####
  17.   ==============================================================================
  18.     [..]
  19.       *** DAC Channels ***
  20.       ====================
  21.     [..]
  22.     STM32F1 devices integrate two 12-bit Digital Analog Converters
  23.  
  24.     The 2 converters (i.e. channel1 & channel2)
  25.     can be used independently or simultaneously (dual mode):
  26.       (#) DAC channel1 with DAC_OUT1 (PA4) as output or connected to on-chip
  27.           peripherals (ex. timers).
  28.       (#) DAC channel2 with DAC_OUT2 (PA5) as output or connected to on-chip
  29.           peripherals (ex. timers).
  30.  
  31.       *** DAC Triggers ***
  32.       ====================
  33.     [..]
  34.     Digital to Analog conversion can be non-triggered using DAC_TRIGGER_NONE
  35.     and DAC_OUT1/DAC_OUT2 is available once writing to DHRx register.
  36.     [..]
  37.     Digital to Analog conversion can be triggered by:
  38.       (#) External event: EXTI Line 9 (any GPIOx_PIN_9) using DAC_TRIGGER_EXT_IT9.
  39.           The used pin (GPIOx_PIN_9) must be configured in input mode.
  40.  
  41.       (#) Timers TRGO: TIM2, TIM4, TIM6, TIM7
  42.           For STM32F10x connectivity line devices and STM32F100x devices: TIM3
  43.           For STM32F10x high-density and XL-density devices: TIM8
  44.           For STM32F100x high-density value line devices: TIM15 as
  45.           replacement of TIM5.
  46.           (DAC_TRIGGER_T2_TRGO, DAC_TRIGGER_T4_TRGO...)
  47.  
  48.       (#) Software using DAC_TRIGGER_SOFTWARE
  49.  
  50.       *** DAC Buffer mode feature ***
  51.       ===============================
  52.       [..]
  53.       Each DAC channel integrates an output buffer that can be used to
  54.       reduce the output impedance, and to drive external loads directly
  55.       without having to add an external operational amplifier.
  56.       To enable, the output buffer use
  57.       sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE;
  58.       [..]
  59.       (@) Refer to the device datasheet for more details about output
  60.           impedance value with and without output buffer.
  61.  
  62.       *** GPIO configurations guidelines ***
  63.       =====================
  64.       [..]
  65.       When a DAC channel is used (ex channel1 on PA4) and the other is not
  66.       (ex channel2 on PA5 is configured in Analog and disabled).
  67.       Channel1 may disturb channel2 as coupling effect.
  68.       Note that there is no coupling on channel2 as soon as channel2 is turned on.
  69.       Coupling on adjacent channel could be avoided as follows:
  70.       when unused PA5 is configured as INPUT PULL-UP or DOWN.
  71.       PA5 is configured in ANALOG just before it is turned on.
  72.  
  73.        *** DAC wave generation feature ***
  74.        ===================================
  75.        [..]
  76.        Both DAC channels can be used to generate
  77.          (#) Noise wave
  78.          (#) Triangle wave
  79.  
  80.        *** DAC data format ***
  81.        =======================
  82.        [..]
  83.        The DAC data format can be:
  84.          (#) 8-bit right alignment using DAC_ALIGN_8B_R
  85.          (#) 12-bit left alignment using DAC_ALIGN_12B_L
  86.          (#) 12-bit right alignment using DAC_ALIGN_12B_R
  87.  
  88.        *** DAC data value to voltage correspondence ***
  89.        ================================================
  90.        [..]
  91.        The analog output voltage on each DAC channel pin is determined
  92.        by the following equation:
  93.        [..]
  94.        DAC_OUTx = VREF+ * DOR / 4095
  95.        (+) with  DOR is the Data Output Register
  96.        [..]
  97.           VREF+ is the input voltage reference (refer to the device datasheet)
  98.        [..]
  99.         e.g. To set DAC_OUT1 to 0.7V, use
  100.        (+) Assuming that VREF+ = 3.3V, DAC_OUT1 = (3.3 * 868) / 4095 = 0.7V
  101.  
  102.        *** DMA requests ***
  103.        =====================
  104.        [..]
  105.        A DMA request can be generated when an external trigger (but not a software trigger)
  106.        occurs if DMA1 requests are enabled using HAL_DAC_Start_DMA().
  107.        DMA1 requests are mapped as following:
  108.       (#) DAC channel1 mapped on DMA1 channel3
  109.           for STM32F100x low-density, medium-density, high-density with DAC
  110.           DMA remap:
  111.       (#) DAC channel2 mapped on DMA2 channel3
  112.           for STM32F100x high-density without DAC DMA remap and other
  113.           STM32F1 devices
  114.  
  115.      [..]
  116.     (@) For Dual mode and specific signal (Triangle and noise) generation please
  117.         refer to Extended Features Driver description
  118.  
  119.                       ##### How to use this driver #####
  120.   ==============================================================================
  121.     [..]
  122.       (+) DAC APB clock must be enabled to get write access to DAC
  123.           registers using HAL_DAC_Init()
  124.       (+) Configure DAC_OUTx (DAC_OUT1: PA4, DAC_OUT2: PA5) in analog mode.
  125.       (+) Configure the DAC channel using HAL_DAC_ConfigChannel() function.
  126.       (+) Enable the DAC channel using HAL_DAC_Start() or HAL_DAC_Start_DMA() functions.
  127.  
  128.  
  129.      *** Polling mode IO operation ***
  130.      =================================
  131.      [..]
  132.        (+) Start the DAC peripheral using HAL_DAC_Start()
  133.        (+) To read the DAC last data output value, use the HAL_DAC_GetValue() function.
  134.        (+) Stop the DAC peripheral using HAL_DAC_Stop()
  135.  
  136.      *** DMA mode IO operation ***
  137.      ==============================
  138.      [..]
  139.        (+) Start the DAC peripheral using HAL_DAC_Start_DMA(), at this stage the user specify the length
  140.            of data to be transferred at each end of conversion
  141.            First issued trigger will start the conversion of the value previously set by HAL_DAC_SetValue().
  142.        (+) At the middle of data transfer HAL_DAC_ConvHalfCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
  143.            function is executed and user can add his own code by customization of function pointer
  144.            HAL_DAC_ConvHalfCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
  145.        (+) At The end of data transfer HAL_DAC_ConvCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
  146.            function is executed and user can add his own code by customization of function pointer
  147.            HAL_DAC_ConvCpltCallbackCh1() or HAL_DACEx_ConvHalfCpltCallbackCh2()
  148.        (+) In case of transfer Error, HAL_DAC_ErrorCallbackCh1() function is executed and user can
  149.             add his own code by customization of function pointer HAL_DAC_ErrorCallbackCh1
  150.        (+) For STM32F100x devices with specific feature: DMA underrun.
  151.            In case of DMA underrun, DAC interruption triggers and execute internal function HAL_DAC_IRQHandler.
  152.            HAL_DAC_DMAUnderrunCallbackCh1() or HAL_DACEx_DMAUnderrunCallbackCh2()
  153.            function is executed and user can add his own code by customization of function pointer
  154.            HAL_DAC_DMAUnderrunCallbackCh1() or HAL_DACEx_DMAUnderrunCallbackCh2() and
  155.            add his own code by customization of function pointer HAL_DAC_ErrorCallbackCh1()
  156.        (+) Stop the DAC peripheral using HAL_DAC_Stop_DMA()
  157.  
  158.     *** Callback registration ***
  159.     =============================================
  160.     [..]
  161.       The compilation define  USE_HAL_DAC_REGISTER_CALLBACKS when set to 1
  162.       allows the user to configure dynamically the driver callbacks.
  163.  
  164.     Use Functions @ref HAL_DAC_RegisterCallback() to register a user callback,
  165.       it allows to register following callbacks:
  166.       (+) ConvCpltCallbackCh1     : callback when a half transfer is completed on Ch1.
  167.       (+) ConvHalfCpltCallbackCh1 : callback when a transfer is completed on Ch1.
  168.       (+) ErrorCallbackCh1        : callback when an error occurs on Ch1.
  169.       (+) DMAUnderrunCallbackCh1  : callback when an underrun error occurs on Ch1.
  170.       (+) ConvCpltCallbackCh2     : callback when a half transfer is completed on Ch2.
  171.       (+) ConvHalfCpltCallbackCh2 : callback when a transfer is completed on Ch2.
  172.       (+) ErrorCallbackCh2        : callback when an error occurs on Ch2.
  173.       (+) DMAUnderrunCallbackCh2  : callback when an underrun error occurs on Ch2.
  174.       (+) MspInitCallback         : DAC MspInit.
  175.       (+) MspDeInitCallback       : DAC MspdeInit.
  176.       This function takes as parameters the HAL peripheral handle, the Callback ID
  177.       and a pointer to the user callback function.
  178.  
  179.     Use function @ref HAL_DAC_UnRegisterCallback() to reset a callback to the default
  180.       weak (surcharged) function. It allows to reset following callbacks:
  181.       (+) ConvCpltCallbackCh1     : callback when a half transfer is completed on Ch1.
  182.       (+) ConvHalfCpltCallbackCh1 : callback when a transfer is completed on Ch1.
  183.       (+) ErrorCallbackCh1        : callback when an error occurs on Ch1.
  184.       (+) DMAUnderrunCallbackCh1  : callback when an underrun error occurs on Ch1.
  185.       (+) ConvCpltCallbackCh2     : callback when a half transfer is completed on Ch2.
  186.       (+) ConvHalfCpltCallbackCh2 : callback when a transfer is completed on Ch2.
  187.       (+) ErrorCallbackCh2        : callback when an error occurs on Ch2.
  188.       (+) DMAUnderrunCallbackCh2  : callback when an underrun error occurs on Ch2.
  189.       (+) MspInitCallback         : DAC MspInit.
  190.       (+) MspDeInitCallback       : DAC MspdeInit.
  191.       (+) All Callbacks
  192.       This function) takes as parameters the HAL peripheral handle and the Callback ID.
  193.  
  194.       By default, after the @ref HAL_DAC_Init and if the state is HAL_DAC_STATE_RESET
  195.       all callbacks are reset to the corresponding legacy weak (surcharged) functions.
  196.       Exception done for MspInit and MspDeInit callbacks that are respectively
  197.       reset to the legacy weak (surcharged) functions in the @ref HAL_DAC_Init
  198.       and @ref  HAL_DAC_DeInit only when these callbacks are null (not registered beforehand).
  199.       If not, MspInit or MspDeInit are not null, the @ref HAL_DAC_Init and @ref HAL_DAC_DeInit
  200.       keep and use the user MspInit/MspDeInit callbacks (registered beforehand)
  201.  
  202.       Callbacks can be registered/unregistered in READY state only.
  203.       Exception done for MspInit/MspDeInit callbacks that can be registered/unregistered
  204.       in READY or RESET state, thus registered (user) MspInit/DeInit callbacks can be used
  205.       during the Init/DeInit.
  206.       In that case first register the MspInit/MspDeInit user callbacks
  207.       using @ref HAL_DAC_RegisterCallback before calling @ref HAL_DAC_DeInit
  208.       or @ref HAL_DAC_Init function.
  209.  
  210.       When The compilation define USE_HAL_DAC_REGISTER_CALLBACKS is set to 0 or
  211.       not defined, the callback registering feature is not available
  212.       and weak (surcharged) callbacks are used.
  213.  
  214.      *** DAC HAL driver macros list ***
  215.      =============================================
  216.      [..]
  217.        Below the list of most used macros in DAC HAL driver.
  218.  
  219.       (+) __HAL_DAC_ENABLE : Enable the DAC peripheral (For STM32F100x devices with specific feature: DMA underrun)
  220.       (+) __HAL_DAC_DISABLE : Disable the DAC peripheral (For STM32F100x devices with specific feature: DMA underrun)
  221.       (+) __HAL_DAC_CLEAR_FLAG: Clear the DAC's pending flags (For STM32F100x devices with specific feature: DMA underrun)
  222.       (+) __HAL_DAC_GET_FLAG: Get the selected DAC's flag status (For STM32F100x devices with specific feature: DMA underrun)
  223.  
  224.      [..]
  225.       (@) You can refer to the DAC HAL driver header file for more useful macros
  226.  
  227. @endverbatim
  228.   ******************************************************************************
  229.   * @attention
  230.   *
  231.   * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  232.   * All rights reserved.</center></h2>
  233.   *
  234.   * This software component is licensed by ST under BSD 3-Clause license,
  235.   * the "License"; You may not use this file except in compliance with the
  236.   * License. You may obtain a copy of the License at:
  237.   *                        opensource.org/licenses/BSD-3-Clause
  238.   *
  239.   ******************************************************************************
  240.   */
  241.  
  242. /* Includes ------------------------------------------------------------------*/
  243. #include "stm32f1xx_hal.h"
  244.  
  245. /** @addtogroup STM32F1xx_HAL_Driver
  246.   * @{
  247.   */
  248.  
  249. #ifdef HAL_DAC_MODULE_ENABLED
  250. #if defined(DAC)
  251.  
  252. /** @defgroup DAC DAC
  253.   * @brief DAC driver modules
  254.   * @{
  255.   */
  256.  
  257. /* Private typedef -----------------------------------------------------------*/
  258. /* Private define ------------------------------------------------------------*/
  259. /* Private constants ---------------------------------------------------------*/
  260. /* Private macro -------------------------------------------------------------*/
  261. /* Private variables ---------------------------------------------------------*/
  262. /* Private function prototypes -----------------------------------------------*/
  263. /* Exported functions -------------------------------------------------------*/
  264.  
  265. /** @defgroup DAC_Exported_Functions DAC Exported Functions
  266.   * @{
  267.   */
  268.  
  269. /** @defgroup DAC_Exported_Functions_Group1 Initialization and de-initialization functions
  270.   *  @brief    Initialization and Configuration functions
  271.   *
  272. @verbatim
  273.   ==============================================================================
  274.               ##### Initialization and de-initialization functions #####
  275.   ==============================================================================
  276.     [..]  This section provides functions allowing to:
  277.       (+) Initialize and configure the DAC.
  278.       (+) De-initialize the DAC.
  279.  
  280. @endverbatim
  281.   * @{
  282.   */
  283.  
  284. /**
  285.   * @brief  Initialize the DAC peripheral according to the specified parameters
  286.   *         in the DAC_InitStruct and initialize the associated handle.
  287.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  288.   *         the configuration information for the specified DAC.
  289.   * @retval HAL status
  290.   */
  291. HAL_StatusTypeDef HAL_DAC_Init(DAC_HandleTypeDef *hdac)
  292. {
  293.   /* Check DAC handle */
  294.   if (hdac == NULL)
  295.   {
  296.     return HAL_ERROR;
  297.   }
  298.   /* Check the parameters */
  299.   assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
  300.  
  301.   if (hdac->State == HAL_DAC_STATE_RESET)
  302.   {
  303. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  304.     /* Init the DAC Callback settings */
  305.     hdac->ConvCpltCallbackCh1           = HAL_DAC_ConvCpltCallbackCh1;
  306.     hdac->ConvHalfCpltCallbackCh1       = HAL_DAC_ConvHalfCpltCallbackCh1;
  307.     hdac->ErrorCallbackCh1              = HAL_DAC_ErrorCallbackCh1;
  308.     hdac->DMAUnderrunCallbackCh1        = HAL_DAC_DMAUnderrunCallbackCh1;
  309.  
  310.     hdac->ConvCpltCallbackCh2           = HAL_DACEx_ConvCpltCallbackCh2;
  311.     hdac->ConvHalfCpltCallbackCh2       = HAL_DACEx_ConvHalfCpltCallbackCh2;
  312.     hdac->ErrorCallbackCh2              = HAL_DACEx_ErrorCallbackCh2;
  313.     hdac->DMAUnderrunCallbackCh2        = HAL_DACEx_DMAUnderrunCallbackCh2;
  314.  
  315.     if (hdac->MspInitCallback == NULL)
  316.     {
  317.       hdac->MspInitCallback             = HAL_DAC_MspInit;
  318.     }
  319. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  320.  
  321.     /* Allocate lock resource and initialize it */
  322.     hdac->Lock = HAL_UNLOCKED;
  323.  
  324. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  325.     /* Init the low level hardware */
  326.     hdac->MspInitCallback(hdac);
  327. #else
  328.     /* Init the low level hardware */
  329.     HAL_DAC_MspInit(hdac);
  330. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  331.   }
  332.  
  333.   /* Initialize the DAC state*/
  334.   hdac->State = HAL_DAC_STATE_BUSY;
  335.  
  336.   /* Set DAC error code to none */
  337.   hdac->ErrorCode = HAL_DAC_ERROR_NONE;
  338.  
  339.   /* Initialize the DAC state*/
  340.   hdac->State = HAL_DAC_STATE_READY;
  341.  
  342.   /* Return function status */
  343.   return HAL_OK;
  344. }
  345.  
  346. /**
  347.   * @brief  Deinitialize the DAC peripheral registers to their default reset values.
  348.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  349.   *         the configuration information for the specified DAC.
  350.   * @retval HAL status
  351.   */
  352. HAL_StatusTypeDef HAL_DAC_DeInit(DAC_HandleTypeDef *hdac)
  353. {
  354.   /* Check DAC handle */
  355.   if (hdac == NULL)
  356.   {
  357.     return HAL_ERROR;
  358.   }
  359.  
  360.   /* Check the parameters */
  361.   assert_param(IS_DAC_ALL_INSTANCE(hdac->Instance));
  362.  
  363.   /* Change DAC state */
  364.   hdac->State = HAL_DAC_STATE_BUSY;
  365.  
  366. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  367.   if (hdac->MspDeInitCallback == NULL)
  368.   {
  369.     hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
  370.   }
  371.   /* DeInit the low level hardware */
  372.   hdac->MspDeInitCallback(hdac);
  373. #else
  374.   /* DeInit the low level hardware */
  375.   HAL_DAC_MspDeInit(hdac);
  376. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  377.  
  378.   /* Set DAC error code to none */
  379.   hdac->ErrorCode = HAL_DAC_ERROR_NONE;
  380.  
  381.   /* Change DAC state */
  382.   hdac->State = HAL_DAC_STATE_RESET;
  383.  
  384.   /* Release Lock */
  385.   __HAL_UNLOCK(hdac);
  386.  
  387.   /* Return function status */
  388.   return HAL_OK;
  389. }
  390.  
  391. /**
  392.   * @brief  Initialize the DAC MSP.
  393.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  394.   *         the configuration information for the specified DAC.
  395.   * @retval None
  396.   */
  397. __weak void HAL_DAC_MspInit(DAC_HandleTypeDef *hdac)
  398. {
  399.   /* Prevent unused argument(s) compilation warning */
  400.   UNUSED(hdac);
  401.  
  402.   /* NOTE : This function should not be modified, when the callback is needed,
  403.             the HAL_DAC_MspInit could be implemented in the user file
  404.    */
  405. }
  406.  
  407. /**
  408.   * @brief  DeInitialize the DAC MSP.
  409.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  410.   *         the configuration information for the specified DAC.
  411.   * @retval None
  412.   */
  413. __weak void HAL_DAC_MspDeInit(DAC_HandleTypeDef *hdac)
  414. {
  415.   /* Prevent unused argument(s) compilation warning */
  416.   UNUSED(hdac);
  417.  
  418.   /* NOTE : This function should not be modified, when the callback is needed,
  419.             the HAL_DAC_MspDeInit could be implemented in the user file
  420.    */
  421. }
  422.  
  423. /**
  424.   * @}
  425.   */
  426.  
  427. /** @defgroup DAC_Exported_Functions_Group2 IO operation functions
  428.   *  @brief    IO operation functions
  429.   *
  430. @verbatim
  431.   ==============================================================================
  432.              ##### IO operation functions #####
  433.   ==============================================================================
  434.     [..]  This section provides functions allowing to:
  435.       (+) Start conversion.
  436.       (+) Stop conversion.
  437.       (+) Start conversion and enable DMA transfer.
  438.       (+) Stop conversion and disable DMA transfer.
  439.       (+) Get result of conversion.
  440.  
  441. @endverbatim
  442.   * @{
  443.   */
  444.  
  445. /**
  446.   * @brief  Enables DAC and starts conversion of channel.
  447.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  448.   *         the configuration information for the specified DAC.
  449.   * @param  Channel The selected DAC channel.
  450.   *          This parameter can be one of the following values:
  451.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  452.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  453.   * @retval HAL status
  454.   */
  455. HAL_StatusTypeDef HAL_DAC_Start(DAC_HandleTypeDef *hdac, uint32_t Channel)
  456. {
  457.   /* Check the parameters */
  458.   assert_param(IS_DAC_CHANNEL(Channel));
  459.  
  460.   /* Process locked */
  461.   __HAL_LOCK(hdac);
  462.  
  463.   /* Change DAC state */
  464.   hdac->State = HAL_DAC_STATE_BUSY;
  465.  
  466.   /* Enable the Peripheral */
  467.   __HAL_DAC_ENABLE(hdac, Channel);
  468.  
  469.   if (Channel == DAC_CHANNEL_1)
  470.   {
  471.     /* Check if software trigger enabled */
  472.     if ((hdac->Instance->CR & (DAC_CR_TEN1 | DAC_CR_TSEL1)) == DAC_TRIGGER_SOFTWARE)
  473.     {
  474.       /* Enable the selected DAC software conversion */
  475.       SET_BIT(hdac->Instance->SWTRIGR, DAC_SWTRIGR_SWTRIG1);
  476.     }
  477.   }
  478.  
  479.   else
  480.   {
  481.     /* Check if software trigger enabled */
  482.     if ((hdac->Instance->CR & (DAC_CR_TEN2 | DAC_CR_TSEL2)) == (DAC_TRIGGER_SOFTWARE << (Channel & 0x10UL)))
  483.     {
  484.       /* Enable the selected DAC software conversion*/
  485.       SET_BIT(hdac->Instance->SWTRIGR, DAC_SWTRIGR_SWTRIG2);
  486.     }
  487.   }
  488.  
  489.  
  490.   /* Change DAC state */
  491.   hdac->State = HAL_DAC_STATE_READY;
  492.  
  493.   /* Process unlocked */
  494.   __HAL_UNLOCK(hdac);
  495.  
  496.   /* Return function status */
  497.   return HAL_OK;
  498. }
  499.  
  500. /**
  501.   * @brief  Disables DAC and stop conversion of channel.
  502.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  503.   *         the configuration information for the specified DAC.
  504.   * @param  Channel The selected DAC channel.
  505.   *          This parameter can be one of the following values:
  506.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  507.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  508.   * @retval HAL status
  509.   */
  510. HAL_StatusTypeDef HAL_DAC_Stop(DAC_HandleTypeDef *hdac, uint32_t Channel)
  511. {
  512.   /* Check the parameters */
  513.   assert_param(IS_DAC_CHANNEL(Channel));
  514.  
  515.   /* Disable the Peripheral */
  516.   __HAL_DAC_DISABLE(hdac, Channel);
  517.  
  518.   /* Change DAC state */
  519.   hdac->State = HAL_DAC_STATE_READY;
  520.  
  521.   /* Return function status */
  522.   return HAL_OK;
  523. }
  524.  
  525. /**
  526.   * @brief  Enables DAC and starts conversion of channel.
  527.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  528.   *         the configuration information for the specified DAC.
  529.   * @param  Channel The selected DAC channel.
  530.   *          This parameter can be one of the following values:
  531.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  532.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  533.   * @param  pData The source Buffer address.
  534.   * @param  Length The length of data to be transferred from memory to DAC peripheral
  535.   * @param  Alignment Specifies the data alignment for DAC channel.
  536.   *          This parameter can be one of the following values:
  537.   *            @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
  538.   *            @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
  539.   *            @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
  540.   * @retval HAL status
  541.   */
  542. HAL_StatusTypeDef HAL_DAC_Start_DMA(DAC_HandleTypeDef *hdac, uint32_t Channel, uint32_t *pData, uint32_t Length,
  543.                                     uint32_t Alignment)
  544. {
  545.   HAL_StatusTypeDef status;
  546.   uint32_t tmpreg = 0U;
  547.  
  548.   /* Check the parameters */
  549.   assert_param(IS_DAC_CHANNEL(Channel));
  550.   assert_param(IS_DAC_ALIGN(Alignment));
  551.  
  552.   /* Process locked */
  553.   __HAL_LOCK(hdac);
  554.  
  555.   /* Change DAC state */
  556.   hdac->State = HAL_DAC_STATE_BUSY;
  557.  
  558.   if (Channel == DAC_CHANNEL_1)
  559.   {
  560.     /* Set the DMA transfer complete callback for channel1 */
  561.     hdac->DMA_Handle1->XferCpltCallback = DAC_DMAConvCpltCh1;
  562.  
  563.     /* Set the DMA half transfer complete callback for channel1 */
  564.     hdac->DMA_Handle1->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh1;
  565.  
  566.     /* Set the DMA error callback for channel1 */
  567.     hdac->DMA_Handle1->XferErrorCallback = DAC_DMAErrorCh1;
  568.  
  569.     /* Enable the selected DAC channel1 DMA request */
  570.     SET_BIT(hdac->Instance->CR, DAC_CR_DMAEN1);
  571.  
  572.     /* Case of use of channel 1 */
  573.     switch (Alignment)
  574.     {
  575.       case DAC_ALIGN_12B_R:
  576.         /* Get DHR12R1 address */
  577.         tmpreg = (uint32_t)&hdac->Instance->DHR12R1;
  578.         break;
  579.       case DAC_ALIGN_12B_L:
  580.         /* Get DHR12L1 address */
  581.         tmpreg = (uint32_t)&hdac->Instance->DHR12L1;
  582.         break;
  583.       case DAC_ALIGN_8B_R:
  584.         /* Get DHR8R1 address */
  585.         tmpreg = (uint32_t)&hdac->Instance->DHR8R1;
  586.         break;
  587.       default:
  588.         break;
  589.     }
  590.   }
  591.  
  592.   else
  593.   {
  594.     /* Set the DMA transfer complete callback for channel2 */
  595.     hdac->DMA_Handle2->XferCpltCallback = DAC_DMAConvCpltCh2;
  596.  
  597.     /* Set the DMA half transfer complete callback for channel2 */
  598.     hdac->DMA_Handle2->XferHalfCpltCallback = DAC_DMAHalfConvCpltCh2;
  599.  
  600.     /* Set the DMA error callback for channel2 */
  601.     hdac->DMA_Handle2->XferErrorCallback = DAC_DMAErrorCh2;
  602.  
  603.     /* Enable the selected DAC channel2 DMA request */
  604.     SET_BIT(hdac->Instance->CR, DAC_CR_DMAEN2);
  605.  
  606.     /* Case of use of channel 2 */
  607.     switch (Alignment)
  608.     {
  609.       case DAC_ALIGN_12B_R:
  610.         /* Get DHR12R2 address */
  611.         tmpreg = (uint32_t)&hdac->Instance->DHR12R2;
  612.         break;
  613.       case DAC_ALIGN_12B_L:
  614.         /* Get DHR12L2 address */
  615.         tmpreg = (uint32_t)&hdac->Instance->DHR12L2;
  616.         break;
  617.       case DAC_ALIGN_8B_R:
  618.         /* Get DHR8R2 address */
  619.         tmpreg = (uint32_t)&hdac->Instance->DHR8R2;
  620.         break;
  621.       default:
  622.         break;
  623.     }
  624.   }
  625.  
  626.  
  627.   /* Enable the DMA Stream */
  628.   if (Channel == DAC_CHANNEL_1)
  629.   {
  630. #if defined(DAC_CR_DMAUDRIE1)
  631.     /* Enable the DAC DMA underrun interrupt */
  632.     __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR1);
  633. #endif /* DAC_CR_DMAUDRIE1 */
  634.  
  635.     /* Enable the DMA Stream */
  636.     status = HAL_DMA_Start_IT(hdac->DMA_Handle1, (uint32_t)pData, tmpreg, Length);
  637.   }
  638.  
  639.   else
  640.   {
  641. #if defined(DAC_CR_DMAUDRIE2)
  642.     /* Enable the DAC DMA underrun interrupt */
  643.     __HAL_DAC_ENABLE_IT(hdac, DAC_IT_DMAUDR2);
  644. #endif /* DAC_CR_DMAUDRIE2 */
  645.  
  646.     /* Enable the DMA Stream */
  647.     status = HAL_DMA_Start_IT(hdac->DMA_Handle2, (uint32_t)pData, tmpreg, Length);
  648.   }
  649.  
  650.  
  651.   /* Process Unlocked */
  652.   __HAL_UNLOCK(hdac);
  653.  
  654.   if (status == HAL_OK)
  655.   {
  656.     /* Enable the Peripheral */
  657.     __HAL_DAC_ENABLE(hdac, Channel);
  658.   }
  659.   else
  660.   {
  661.     hdac->ErrorCode |= HAL_DAC_ERROR_DMA;
  662.   }
  663.  
  664.   /* Return function status */
  665.   return status;
  666. }
  667.  
  668. /**
  669.   * @brief  Disables DAC and stop conversion of channel.
  670.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  671.   *         the configuration information for the specified DAC.
  672.   * @param  Channel The selected DAC channel.
  673.   *          This parameter can be one of the following values:
  674.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  675.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  676.   * @retval HAL status
  677.   */
  678. HAL_StatusTypeDef HAL_DAC_Stop_DMA(DAC_HandleTypeDef *hdac, uint32_t Channel)
  679. {
  680.   /* Check the parameters */
  681.   assert_param(IS_DAC_CHANNEL(Channel));
  682.  
  683.   /* Disable the selected DAC channel DMA request */
  684.   hdac->Instance->CR &= ~(DAC_CR_DMAEN1 << (Channel & 0x10UL));
  685.  
  686.   /* Disable the Peripheral */
  687.   __HAL_DAC_DISABLE(hdac, Channel);
  688.  
  689.   /* Disable the DMA Stream */
  690.  
  691.   /* Channel1 is used */
  692.   if (Channel == DAC_CHANNEL_1)
  693.   {
  694.     /* Disable the DMA Stream */
  695.     (void)HAL_DMA_Abort(hdac->DMA_Handle1);
  696. #if defined(DAC_CR_DMAUDRIE1)
  697.     /* Disable the DAC DMA underrun interrupt */
  698.     __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR1);
  699. #endif /* DAC_CR_DMAUDRIE1 */
  700.   }
  701.  
  702.   else /* Channel2 is used for */
  703.   {
  704.     /* Disable the DMA Stream */
  705.     (void)HAL_DMA_Abort(hdac->DMA_Handle2);
  706. #if defined(DAC_CR_DMAUDRIE2)
  707.     /* Disable the DAC DMA underrun interrupt */
  708.     __HAL_DAC_DISABLE_IT(hdac, DAC_IT_DMAUDR2);
  709. #endif /* DAC_CR_DMAUDRIE2 */
  710.   }
  711.  
  712.  
  713.   /* Change DAC state */
  714.   hdac->State = HAL_DAC_STATE_READY;
  715.  
  716.   /* Return function status */
  717.   return HAL_OK;
  718. }
  719.  
  720. /**
  721.   * @brief  Handles DAC interrupt request
  722.   *         This function uses the interruption of DMA
  723.   *         underrun.
  724.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  725.   *         the configuration information for the specified DAC.
  726.   * @retval None
  727.   */
  728. void HAL_DAC_IRQHandler(DAC_HandleTypeDef *hdac)
  729. {
  730. #if !defined(DAC_SR_DMAUDR1) && !defined(DAC_SR_DMAUDR2)
  731.   UNUSED(hdac);
  732. #endif
  733.  
  734. #if defined(DAC_SR_DMAUDR1)
  735.   if (__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR1))
  736.   {
  737.     /* Check underrun flag of DAC channel 1 */
  738.     if (__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR1))
  739.     {
  740.       /* Change DAC state to error state */
  741.       hdac->State = HAL_DAC_STATE_ERROR;
  742.  
  743.       /* Set DAC error code to channel1 DMA underrun error */
  744.       SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_DMAUNDERRUNCH1);
  745.  
  746.       /* Clear the underrun flag */
  747.       __HAL_DAC_CLEAR_FLAG(hdac, DAC_FLAG_DMAUDR1);
  748.  
  749.       /* Disable the selected DAC channel1 DMA request */
  750.       CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN1);
  751.  
  752.       /* Error callback */
  753. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  754.       hdac->DMAUnderrunCallbackCh1(hdac);
  755. #else
  756.       HAL_DAC_DMAUnderrunCallbackCh1(hdac);
  757. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  758.     }
  759.   }
  760. #endif /* DAC_SR_DMAUDR1 */
  761.  
  762. #if defined(DAC_SR_DMAUDR2)
  763.   if (__HAL_DAC_GET_IT_SOURCE(hdac, DAC_IT_DMAUDR2))
  764.   {
  765.     /* Check underrun flag of DAC channel 2 */
  766.     if (__HAL_DAC_GET_FLAG(hdac, DAC_FLAG_DMAUDR2))
  767.     {
  768.       /* Change DAC state to error state */
  769.       hdac->State = HAL_DAC_STATE_ERROR;
  770.  
  771.       /* Set DAC error code to channel2 DMA underrun error */
  772.       SET_BIT(hdac->ErrorCode, HAL_DAC_ERROR_DMAUNDERRUNCH2);
  773.  
  774.       /* Clear the underrun flag */
  775.       __HAL_DAC_CLEAR_FLAG(hdac, DAC_FLAG_DMAUDR2);
  776.  
  777.       /* Disable the selected DAC channel2 DMA request */
  778.       CLEAR_BIT(hdac->Instance->CR, DAC_CR_DMAEN2);
  779.  
  780.       /* Error callback */
  781. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  782.       hdac->DMAUnderrunCallbackCh2(hdac);
  783. #else
  784.       HAL_DACEx_DMAUnderrunCallbackCh2(hdac);
  785. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  786.     }
  787.   }
  788. #endif /* DAC_SR_DMAUDR2 */
  789. }
  790.  
  791. /**
  792.   * @brief  Set the specified data holding register value for DAC channel.
  793.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  794.   *         the configuration information for the specified DAC.
  795.   * @param  Channel The selected DAC channel.
  796.   *          This parameter can be one of the following values:
  797.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  798.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  799.   * @param  Alignment Specifies the data alignment.
  800.   *          This parameter can be one of the following values:
  801.   *            @arg DAC_ALIGN_8B_R: 8bit right data alignment selected
  802.   *            @arg DAC_ALIGN_12B_L: 12bit left data alignment selected
  803.   *            @arg DAC_ALIGN_12B_R: 12bit right data alignment selected
  804.   * @param  Data Data to be loaded in the selected data holding register.
  805.   * @retval HAL status
  806.   */
  807. HAL_StatusTypeDef HAL_DAC_SetValue(DAC_HandleTypeDef *hdac, uint32_t Channel, uint32_t Alignment, uint32_t Data)
  808. {
  809.   __IO uint32_t tmp = 0UL;
  810.  
  811.   /* Check the parameters */
  812.   assert_param(IS_DAC_CHANNEL(Channel));
  813.   assert_param(IS_DAC_ALIGN(Alignment));
  814.   assert_param(IS_DAC_DATA(Data));
  815.  
  816.   tmp = (uint32_t)hdac->Instance;
  817.   if (Channel == DAC_CHANNEL_1)
  818.   {
  819.     tmp += DAC_DHR12R1_ALIGNMENT(Alignment);
  820.   }
  821.  
  822.   else
  823.   {
  824.     tmp += DAC_DHR12R2_ALIGNMENT(Alignment);
  825.   }
  826.  
  827.  
  828.   /* Set the DAC channel selected data holding register */
  829.   *(__IO uint32_t *) tmp = Data;
  830.  
  831.   /* Return function status */
  832.   return HAL_OK;
  833. }
  834.  
  835. /**
  836.   * @brief  Conversion complete callback in non-blocking mode for Channel1
  837.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  838.   *         the configuration information for the specified DAC.
  839.   * @retval None
  840.   */
  841. __weak void HAL_DAC_ConvCpltCallbackCh1(DAC_HandleTypeDef *hdac)
  842. {
  843.   /* Prevent unused argument(s) compilation warning */
  844.   UNUSED(hdac);
  845.  
  846.   /* NOTE : This function should not be modified, when the callback is needed,
  847.             the HAL_DAC_ConvCpltCallbackCh1 could be implemented in the user file
  848.    */
  849. }
  850.  
  851. /**
  852.   * @brief  Conversion half DMA transfer callback in non-blocking mode for Channel1
  853.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  854.   *         the configuration information for the specified DAC.
  855.   * @retval None
  856.   */
  857. __weak void HAL_DAC_ConvHalfCpltCallbackCh1(DAC_HandleTypeDef *hdac)
  858. {
  859.   /* Prevent unused argument(s) compilation warning */
  860.   UNUSED(hdac);
  861.  
  862.   /* NOTE : This function should not be modified, when the callback is needed,
  863.             the HAL_DAC_ConvHalfCpltCallbackCh1 could be implemented in the user file
  864.    */
  865. }
  866.  
  867. /**
  868.   * @brief  Error DAC callback for Channel1.
  869.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  870.   *         the configuration information for the specified DAC.
  871.   * @retval None
  872.   */
  873. __weak void HAL_DAC_ErrorCallbackCh1(DAC_HandleTypeDef *hdac)
  874. {
  875.   /* Prevent unused argument(s) compilation warning */
  876.   UNUSED(hdac);
  877.  
  878.   /* NOTE : This function should not be modified, when the callback is needed,
  879.             the HAL_DAC_ErrorCallbackCh1 could be implemented in the user file
  880.    */
  881. }
  882.  
  883. /**
  884.   * @brief  DMA underrun DAC callback for channel1.
  885.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  886.   *         the configuration information for the specified DAC.
  887.   * @retval None
  888.   */
  889. __weak void HAL_DAC_DMAUnderrunCallbackCh1(DAC_HandleTypeDef *hdac)
  890. {
  891.   /* Prevent unused argument(s) compilation warning */
  892.   UNUSED(hdac);
  893.  
  894.   /* NOTE : This function should not be modified, when the callback is needed,
  895.             the HAL_DAC_DMAUnderrunCallbackCh1 could be implemented in the user file
  896.    */
  897. }
  898.  
  899. /**
  900.   * @}
  901.   */
  902.  
  903. /** @defgroup DAC_Exported_Functions_Group3 Peripheral Control functions
  904.   *  @brief    Peripheral Control functions
  905.   *
  906. @verbatim
  907.   ==============================================================================
  908.              ##### Peripheral Control functions #####
  909.   ==============================================================================
  910.     [..]  This section provides functions allowing to:
  911.       (+) Configure channels.
  912.       (+) Set the specified data holding register value for DAC channel.
  913.  
  914. @endverbatim
  915.   * @{
  916.   */
  917.  
  918. /**
  919.   * @brief  Returns the last data output value of the selected DAC channel.
  920.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  921.   *         the configuration information for the specified DAC.
  922.   * @param  Channel The selected DAC channel.
  923.   *          This parameter can be one of the following values:
  924.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  925.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  926.   * @retval The selected DAC channel data output value.
  927.   */
  928. uint32_t HAL_DAC_GetValue(DAC_HandleTypeDef *hdac, uint32_t Channel)
  929. {
  930.   uint32_t result;
  931.  
  932.   /* Check the parameters */
  933.   assert_param(IS_DAC_CHANNEL(Channel));
  934.  
  935.   if (Channel == DAC_CHANNEL_1)
  936.   {
  937.     result = hdac->Instance->DOR1;
  938.   }
  939.  
  940.   else
  941.   {
  942.     result = hdac->Instance->DOR2;
  943.   }
  944.  
  945.   /* Returns the DAC channel data output register value */
  946.   return result;
  947. }
  948.  
  949. /**
  950.   * @brief  Configures the selected DAC channel.
  951.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  952.   *         the configuration information for the specified DAC.
  953.   * @param  sConfig DAC configuration structure.
  954.   * @param  Channel The selected DAC channel.
  955.   *          This parameter can be one of the following values:
  956.   *            @arg DAC_CHANNEL_1: DAC Channel1 selected
  957.   *            @arg DAC_CHANNEL_2: DAC Channel2 selected
  958.   * @retval HAL status
  959.   */
  960. HAL_StatusTypeDef HAL_DAC_ConfigChannel(DAC_HandleTypeDef *hdac, DAC_ChannelConfTypeDef *sConfig, uint32_t Channel)
  961. {
  962.   uint32_t tmpreg1;
  963.   uint32_t tmpreg2;
  964.  
  965.   /* Check the DAC parameters */
  966.   assert_param(IS_DAC_TRIGGER(sConfig->DAC_Trigger));
  967.   assert_param(IS_DAC_OUTPUT_BUFFER_STATE(sConfig->DAC_OutputBuffer));
  968.   assert_param(IS_DAC_CHANNEL(Channel));
  969.  
  970.   /* Process locked */
  971.   __HAL_LOCK(hdac);
  972.  
  973.   /* Change DAC state */
  974.   hdac->State = HAL_DAC_STATE_BUSY;
  975.  
  976.   /* Get the DAC CR value */
  977.   tmpreg1 = hdac->Instance->CR;
  978.   /* Clear BOFFx, TENx, TSELx, WAVEx and MAMPx bits */
  979.   tmpreg1 &= ~(((uint32_t)(DAC_CR_MAMP1 | DAC_CR_WAVE1 | DAC_CR_TSEL1 | DAC_CR_TEN1 | DAC_CR_BOFF1)) << (Channel & 0x10UL));
  980.   /* Configure for the selected DAC channel: buffer output, trigger */
  981.   /* Set TSELx and TENx bits according to DAC_Trigger value */
  982.   /* Set BOFFx bit according to DAC_OutputBuffer value */
  983.   tmpreg2 = (sConfig->DAC_Trigger | sConfig->DAC_OutputBuffer);
  984.   /* Calculate CR register value depending on DAC_Channel */
  985.   tmpreg1 |= tmpreg2 << (Channel & 0x10UL);
  986.   /* Write to DAC CR */
  987.   hdac->Instance->CR = tmpreg1;
  988.   /* Disable wave generation */
  989.   CLEAR_BIT(hdac->Instance->CR, (DAC_CR_WAVE1 << (Channel & 0x10UL)));
  990.  
  991.   /* Change DAC state */
  992.   hdac->State = HAL_DAC_STATE_READY;
  993.  
  994.   /* Process unlocked */
  995.   __HAL_UNLOCK(hdac);
  996.  
  997.   /* Return function status */
  998.   return HAL_OK;
  999. }
  1000.  
  1001. /**
  1002.   * @}
  1003.   */
  1004.  
  1005. /** @defgroup DAC_Exported_Functions_Group4 Peripheral State and Errors functions
  1006.   *  @brief   Peripheral State and Errors functions
  1007.   *
  1008. @verbatim
  1009.   ==============================================================================
  1010.             ##### Peripheral State and Errors functions #####
  1011.   ==============================================================================
  1012.     [..]
  1013.     This subsection provides functions allowing to
  1014.       (+) Check the DAC state.
  1015.       (+) Check the DAC Errors.
  1016.  
  1017. @endverbatim
  1018.   * @{
  1019.   */
  1020.  
  1021. /**
  1022.   * @brief  return the DAC handle state
  1023.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  1024.   *         the configuration information for the specified DAC.
  1025.   * @retval HAL state
  1026.   */
  1027. HAL_DAC_StateTypeDef HAL_DAC_GetState(DAC_HandleTypeDef *hdac)
  1028. {
  1029.   /* Return DAC handle state */
  1030.   return hdac->State;
  1031. }
  1032.  
  1033.  
  1034. /**
  1035.   * @brief  Return the DAC error code
  1036.   * @param  hdac pointer to a DAC_HandleTypeDef structure that contains
  1037.   *         the configuration information for the specified DAC.
  1038.   * @retval DAC Error Code
  1039.   */
  1040. uint32_t HAL_DAC_GetError(DAC_HandleTypeDef *hdac)
  1041. {
  1042.   return hdac->ErrorCode;
  1043. }
  1044.  
  1045. /**
  1046.   * @}
  1047.   */
  1048.  
  1049. /**
  1050.   * @}
  1051.   */
  1052.  
  1053. /** @addtogroup DAC_Exported_Functions
  1054.   * @{
  1055.   */
  1056.  
  1057. /** @addtogroup DAC_Exported_Functions_Group1
  1058.   * @{
  1059.   */
  1060. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  1061. /**
  1062.   * @brief  Register a User DAC Callback
  1063.   *         To be used instead of the weak (surcharged) predefined callback
  1064.   * @param  hdac DAC handle
  1065.   * @param  CallbackID ID of the callback to be registered
  1066.   *         This parameter can be one of the following values:
  1067.   *          @arg @ref HAL_DAC_ERROR_INVALID_CALLBACK   DAC Error Callback ID
  1068.   *          @arg @ref HAL_DAC_CH1_COMPLETE_CB_ID       DAC CH1 Complete Callback ID
  1069.   *          @arg @ref HAL_DAC_CH1_HALF_COMPLETE_CB_ID  DAC CH1 Half Complete Callback ID
  1070.   *          @arg @ref HAL_DAC_CH1_ERROR_ID             DAC CH1 Error Callback ID
  1071.   *          @arg @ref HAL_DAC_CH1_UNDERRUN_CB_ID       DAC CH1 UnderRun Callback ID
  1072.   *          @arg @ref HAL_DAC_CH2_COMPLETE_CB_ID       DAC CH2 Complete Callback ID
  1073.   *          @arg @ref HAL_DAC_CH2_HALF_COMPLETE_CB_ID  DAC CH2 Half Complete Callback ID
  1074.   *          @arg @ref HAL_DAC_CH2_ERROR_ID             DAC CH2 Error Callback ID
  1075.   *          @arg @ref HAL_DAC_CH2_UNDERRUN_CB_ID       DAC CH2 UnderRun Callback ID
  1076.   *          @arg @ref HAL_DAC_MSPINIT_CB_ID            DAC MSP Init Callback ID
  1077.   *          @arg @ref HAL_DAC_MSPDEINIT_CB_ID          DAC MSP DeInit Callback ID
  1078.   *
  1079.   * @param  pCallback pointer to the Callback function
  1080.   * @retval status
  1081.   */
  1082. HAL_StatusTypeDef HAL_DAC_RegisterCallback(DAC_HandleTypeDef *hdac, HAL_DAC_CallbackIDTypeDef CallbackID,
  1083.                                            pDAC_CallbackTypeDef pCallback)
  1084. {
  1085.   HAL_StatusTypeDef status = HAL_OK;
  1086.  
  1087.   if (pCallback == NULL)
  1088.   {
  1089.     /* Update the error code */
  1090.     hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1091.     return HAL_ERROR;
  1092.   }
  1093.  
  1094.   /* Process locked */
  1095.   __HAL_LOCK(hdac);
  1096.  
  1097.   if (hdac->State == HAL_DAC_STATE_READY)
  1098.   {
  1099.     switch (CallbackID)
  1100.     {
  1101.       case HAL_DAC_CH1_COMPLETE_CB_ID :
  1102.         hdac->ConvCpltCallbackCh1 = pCallback;
  1103.         break;
  1104.       case HAL_DAC_CH1_HALF_COMPLETE_CB_ID :
  1105.         hdac->ConvHalfCpltCallbackCh1 = pCallback;
  1106.         break;
  1107.       case HAL_DAC_CH1_ERROR_ID :
  1108.         hdac->ErrorCallbackCh1 = pCallback;
  1109.         break;
  1110.       case HAL_DAC_CH1_UNDERRUN_CB_ID :
  1111.         hdac->DMAUnderrunCallbackCh1 = pCallback;
  1112.         break;
  1113.  
  1114.       case HAL_DAC_CH2_COMPLETE_CB_ID :
  1115.         hdac->ConvCpltCallbackCh2 = pCallback;
  1116.         break;
  1117.       case HAL_DAC_CH2_HALF_COMPLETE_CB_ID :
  1118.         hdac->ConvHalfCpltCallbackCh2 = pCallback;
  1119.         break;
  1120.       case HAL_DAC_CH2_ERROR_ID :
  1121.         hdac->ErrorCallbackCh2 = pCallback;
  1122.         break;
  1123.       case HAL_DAC_CH2_UNDERRUN_CB_ID :
  1124.         hdac->DMAUnderrunCallbackCh2 = pCallback;
  1125.         break;
  1126.  
  1127.       case HAL_DAC_MSPINIT_CB_ID :
  1128.         hdac->MspInitCallback = pCallback;
  1129.         break;
  1130.       case HAL_DAC_MSPDEINIT_CB_ID :
  1131.         hdac->MspDeInitCallback = pCallback;
  1132.         break;
  1133.       default :
  1134.         /* Update the error code */
  1135.         hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1136.         /* update return status */
  1137.         status =  HAL_ERROR;
  1138.         break;
  1139.     }
  1140.   }
  1141.   else if (hdac->State == HAL_DAC_STATE_RESET)
  1142.   {
  1143.     switch (CallbackID)
  1144.     {
  1145.       case HAL_DAC_MSPINIT_CB_ID :
  1146.         hdac->MspInitCallback = pCallback;
  1147.         break;
  1148.       case HAL_DAC_MSPDEINIT_CB_ID :
  1149.         hdac->MspDeInitCallback = pCallback;
  1150.         break;
  1151.       default :
  1152.         /* Update the error code */
  1153.         hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1154.         /* update return status */
  1155.         status =  HAL_ERROR;
  1156.         break;
  1157.     }
  1158.   }
  1159.   else
  1160.   {
  1161.     /* Update the error code */
  1162.     hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1163.     /* update return status */
  1164.     status =  HAL_ERROR;
  1165.   }
  1166.  
  1167.   /* Release Lock */
  1168.   __HAL_UNLOCK(hdac);
  1169.   return status;
  1170. }
  1171.  
  1172. /**
  1173.   * @brief  Unregister a User DAC Callback
  1174.   *         DAC Callback is redirected to the weak (surcharged) predefined callback
  1175.   * @param  hdac DAC handle
  1176.   * @param  CallbackID ID of the callback to be unregistered
  1177.   *         This parameter can be one of the following values:
  1178.   *          @arg @ref HAL_DAC_CH1_COMPLETE_CB_ID          DAC CH1 transfer Complete Callback ID
  1179.   *          @arg @ref HAL_DAC_CH1_HALF_COMPLETE_CB_ID     DAC CH1 Half Complete Callback ID
  1180.   *          @arg @ref HAL_DAC_CH1_ERROR_ID                DAC CH1 Error Callback ID
  1181.   *          @arg @ref HAL_DAC_CH1_UNDERRUN_CB_ID          DAC CH1 UnderRun Callback ID
  1182.   *          @arg @ref HAL_DAC_CH2_COMPLETE_CB_ID          DAC CH2 Complete Callback ID
  1183.   *          @arg @ref HAL_DAC_CH2_HALF_COMPLETE_CB_ID     DAC CH2 Half Complete Callback ID
  1184.   *          @arg @ref HAL_DAC_CH2_ERROR_ID                DAC CH2 Error Callback ID
  1185.   *          @arg @ref HAL_DAC_CH2_UNDERRUN_CB_ID          DAC CH2 UnderRun Callback ID
  1186.   *          @arg @ref HAL_DAC_MSPINIT_CB_ID               DAC MSP Init Callback ID
  1187.   *          @arg @ref HAL_DAC_MSPDEINIT_CB_ID             DAC MSP DeInit Callback ID
  1188.   *          @arg @ref HAL_DAC_ALL_CB_ID                   DAC All callbacks
  1189.   * @retval status
  1190.   */
  1191. HAL_StatusTypeDef HAL_DAC_UnRegisterCallback(DAC_HandleTypeDef *hdac, HAL_DAC_CallbackIDTypeDef CallbackID)
  1192. {
  1193.   HAL_StatusTypeDef status = HAL_OK;
  1194.  
  1195.   /* Process locked */
  1196.   __HAL_LOCK(hdac);
  1197.  
  1198.   if (hdac->State == HAL_DAC_STATE_READY)
  1199.   {
  1200.     switch (CallbackID)
  1201.     {
  1202.       case HAL_DAC_CH1_COMPLETE_CB_ID :
  1203.         hdac->ConvCpltCallbackCh1 = HAL_DAC_ConvCpltCallbackCh1;
  1204.         break;
  1205.       case HAL_DAC_CH1_HALF_COMPLETE_CB_ID :
  1206.         hdac->ConvHalfCpltCallbackCh1 = HAL_DAC_ConvHalfCpltCallbackCh1;
  1207.         break;
  1208.       case HAL_DAC_CH1_ERROR_ID :
  1209.         hdac->ErrorCallbackCh1 = HAL_DAC_ErrorCallbackCh1;
  1210.         break;
  1211.       case HAL_DAC_CH1_UNDERRUN_CB_ID :
  1212.         hdac->DMAUnderrunCallbackCh1 = HAL_DAC_DMAUnderrunCallbackCh1;
  1213.         break;
  1214.  
  1215.       case HAL_DAC_CH2_COMPLETE_CB_ID :
  1216.         hdac->ConvCpltCallbackCh2 = HAL_DACEx_ConvCpltCallbackCh2;
  1217.         break;
  1218.       case HAL_DAC_CH2_HALF_COMPLETE_CB_ID :
  1219.         hdac->ConvHalfCpltCallbackCh2 = HAL_DACEx_ConvHalfCpltCallbackCh2;
  1220.         break;
  1221.       case HAL_DAC_CH2_ERROR_ID :
  1222.         hdac->ErrorCallbackCh2 = HAL_DACEx_ErrorCallbackCh2;
  1223.         break;
  1224.       case HAL_DAC_CH2_UNDERRUN_CB_ID :
  1225.         hdac->DMAUnderrunCallbackCh2 = HAL_DACEx_DMAUnderrunCallbackCh2;
  1226.         break;
  1227.  
  1228.       case HAL_DAC_MSPINIT_CB_ID :
  1229.         hdac->MspInitCallback = HAL_DAC_MspInit;
  1230.         break;
  1231.       case HAL_DAC_MSPDEINIT_CB_ID :
  1232.         hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
  1233.         break;
  1234.       case HAL_DAC_ALL_CB_ID :
  1235.         hdac->ConvCpltCallbackCh1 = HAL_DAC_ConvCpltCallbackCh1;
  1236.         hdac->ConvHalfCpltCallbackCh1 = HAL_DAC_ConvHalfCpltCallbackCh1;
  1237.         hdac->ErrorCallbackCh1 = HAL_DAC_ErrorCallbackCh1;
  1238.         hdac->DMAUnderrunCallbackCh1 = HAL_DAC_DMAUnderrunCallbackCh1;
  1239.  
  1240.         hdac->ConvCpltCallbackCh2 = HAL_DACEx_ConvCpltCallbackCh2;
  1241.         hdac->ConvHalfCpltCallbackCh2 = HAL_DACEx_ConvHalfCpltCallbackCh2;
  1242.         hdac->ErrorCallbackCh2 = HAL_DACEx_ErrorCallbackCh2;
  1243.         hdac->DMAUnderrunCallbackCh2 = HAL_DACEx_DMAUnderrunCallbackCh2;
  1244.  
  1245.         hdac->MspInitCallback = HAL_DAC_MspInit;
  1246.         hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
  1247.         break;
  1248.       default :
  1249.         /* Update the error code */
  1250.         hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1251.         /* update return status */
  1252.         status =  HAL_ERROR;
  1253.         break;
  1254.     }
  1255.   }
  1256.   else if (hdac->State == HAL_DAC_STATE_RESET)
  1257.   {
  1258.     switch (CallbackID)
  1259.     {
  1260.       case HAL_DAC_MSPINIT_CB_ID :
  1261.         hdac->MspInitCallback = HAL_DAC_MspInit;
  1262.         break;
  1263.       case HAL_DAC_MSPDEINIT_CB_ID :
  1264.         hdac->MspDeInitCallback = HAL_DAC_MspDeInit;
  1265.         break;
  1266.       default :
  1267.         /* Update the error code */
  1268.         hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1269.         /* update return status */
  1270.         status =  HAL_ERROR;
  1271.         break;
  1272.     }
  1273.   }
  1274.   else
  1275.   {
  1276.     /* Update the error code */
  1277.     hdac->ErrorCode |= HAL_DAC_ERROR_INVALID_CALLBACK;
  1278.     /* update return status */
  1279.     status =  HAL_ERROR;
  1280.   }
  1281.  
  1282.   /* Release Lock */
  1283.   __HAL_UNLOCK(hdac);
  1284.   return status;
  1285. }
  1286. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  1287.  
  1288. /**
  1289.   * @}
  1290.   */
  1291.  
  1292. /**
  1293.   * @}
  1294.   */
  1295.  
  1296. /** @addtogroup DAC_Private_Functions
  1297.   * @{
  1298.   */
  1299.  
  1300. /**
  1301.   * @brief  DMA conversion complete callback.
  1302.   * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  1303.   *                the configuration information for the specified DMA module.
  1304.   * @retval None
  1305.   */
  1306. void DAC_DMAConvCpltCh1(DMA_HandleTypeDef *hdma)
  1307. {
  1308.   DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  1309.  
  1310. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  1311.   hdac->ConvCpltCallbackCh1(hdac);
  1312. #else
  1313.   HAL_DAC_ConvCpltCallbackCh1(hdac);
  1314. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  1315.  
  1316.   hdac->State = HAL_DAC_STATE_READY;
  1317. }
  1318.  
  1319. /**
  1320.   * @brief  DMA half transfer complete callback.
  1321.   * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  1322.   *                the configuration information for the specified DMA module.
  1323.   * @retval None
  1324.   */
  1325. void DAC_DMAHalfConvCpltCh1(DMA_HandleTypeDef *hdma)
  1326. {
  1327.   DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  1328.   /* Conversion complete callback */
  1329. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  1330.   hdac->ConvHalfCpltCallbackCh1(hdac);
  1331. #else
  1332.   HAL_DAC_ConvHalfCpltCallbackCh1(hdac);
  1333. #endif  /* USE_HAL_DAC_REGISTER_CALLBACKS */
  1334. }
  1335.  
  1336. /**
  1337.   * @brief  DMA error callback
  1338.   * @param  hdma pointer to a DMA_HandleTypeDef structure that contains
  1339.   *                the configuration information for the specified DMA module.
  1340.   * @retval None
  1341.   */
  1342. void DAC_DMAErrorCh1(DMA_HandleTypeDef *hdma)
  1343. {
  1344.   DAC_HandleTypeDef *hdac = (DAC_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  1345.  
  1346.   /* Set DAC error code to DMA error */
  1347.   hdac->ErrorCode |= HAL_DAC_ERROR_DMA;
  1348.  
  1349. #if (USE_HAL_DAC_REGISTER_CALLBACKS == 1)
  1350.   hdac->ErrorCallbackCh1(hdac);
  1351. #else
  1352.   HAL_DAC_ErrorCallbackCh1(hdac);
  1353. #endif /* USE_HAL_DAC_REGISTER_CALLBACKS */
  1354.  
  1355.   hdac->State = HAL_DAC_STATE_READY;
  1356. }
  1357.  
  1358. /**
  1359.   * @}
  1360.   */
  1361.  
  1362. /**
  1363.   * @}
  1364.   */
  1365.  
  1366. #endif /* DAC */
  1367.  
  1368. #endif /* HAL_DAC_MODULE_ENABLED */
  1369.  
  1370. /**
  1371.   * @}
  1372.   */
  1373.  
  1374. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  1375.