/**
  ******************************************************************************
  * @file    stm32g0xx_hal_adc.c
  * @author  MCD Application Team
  * @brief   This file provides firmware functions to manage the following 
  *          functionalities of the Analog to Digital Convertor (ADC)
  *          peripheral:
  *           + Initialization and de-initialization functions
  *             ++ Initialization and Configuration of ADC
  *           + Operation functions
  *             ++ Start, stop, get result of conversions of regular
  *                group, using 3 possible modes: polling, interruption or DMA.
  *           + Control functions
  *             ++ Channels configuration on regular group
  *             ++ Analog Watchdog configuration
  *           + State functions
  *             ++ ADC state machine management
  *             ++ Interrupts and flags management
  *          Other functions (extended functions) are available in file 
  *          "stm32g0xx_hal_adc_ex.c".
  *
  @verbatim
  ==============================================================================
                     ##### ADC peripheral features #####
  ==============================================================================
  [..]
  (+) 12-bit, 10-bit, 8-bit or 6-bit configurable resolution.

  (+) Interrupt generation at the end of regular conversion and in case of 
      analog watchdog or overrun events.
  
  (+) Single and continuous conversion modes.
  
  (+) Scan mode for conversion of several channels sequentially.
  
  (+) Data alignment with in-built data coherency.
  
  (+) Programmable sampling time (common to group of channels)
  
  (+) External trigger (timer or EXTI) with configurable polarity
  
  (+) DMA request generation for transfer of conversions data of regular group.
  
  (+) ADC calibration
  
  (+) ADC conversion of regular group.
  
  (+) ADC supply requirements: 1.62 V to 3.6 V.
  
  (+) ADC input range: from Vref- (connected to Vssa) to Vref+ (connected to 
      Vdda or to an external voltage reference).


                     ##### How to use this driver #####
  ==============================================================================
    [..]

     *** Configuration of top level parameters related to ADC ***
     ============================================================
     [..]

    (#) Enable the ADC interface
        (++) As prerequisite, ADC clock must be configured at RCC top level.
             Caution: On STM32G0, ADC clock frequency max is 35MHz (refer
                      to device datasheet).
                      Therefore, ADC clock source from RCC and ADC clock 
                      prescaler must be configured to remain below
                      this maximum frequency.

        (++) Two clock settings are mandatory: 
             (+++) ADC clock (core clock, also possibly conversion clock).

             (+++) ADC clock (conversions clock).
                   Four possible clock sources: synchronous clock from APB clock (same as ADC core clock)
                   or asynchronous clock from RCC level: SYSCLK, HSI16, PLLPCLK.

             (+++) Example:
                   Into HAL_ADC_MspInit() (recommended code location) or with
                   other device clock parameters configuration:
               (+++) __HAL_RCC_ADC_CLK_ENABLE();                  (mandatory: core clock)

        (++) ADC clock source and clock prescaler are configured at ADC level with
             parameter "ClockPrescaler" using function HAL_ADC_Init().

    (#) ADC pins configuration
         (++) Enable the clock for the ADC GPIOs
              using macro __HAL_RCC_GPIOx_CLK_ENABLE()
         (++) Configure these ADC pins in analog mode
              using function HAL_GPIO_Init()

    (#) Optionally, in case of usage of ADC with interruptions:
         (++) Configure the NVIC for ADC
              using function HAL_NVIC_EnableIRQ(ADCx_IRQn)
         (++) Insert the ADC interruption handler function HAL_ADC_IRQHandler() 
              into the function of corresponding ADC interruption vector 
              ADCx_IRQHandler().

    (#) Optionally, in case of usage of DMA:
         (++) Configure the DMA (DMA channel, mode normal or circular, ...)
              using function HAL_DMA_Init().
         (++) Configure the NVIC for DMA
              using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)
         (++) Insert the ADC interruption handler function HAL_ADC_IRQHandler() 
              into the function of corresponding DMA interruption vector 
              DMAx_Channelx_IRQHandler().

     *** Configuration of ADC, group regular, channels parameters ***
     ================================================================
     [..]

    (#) Configure the ADC parameters (resolution, data alignment, ...)
        and regular group parameters (conversion trigger, sequencer, ...)
        using function HAL_ADC_Init().

    (#) Configure the channels for regular group parameters (channel number, 
        channel rank into sequencer, ..., into regular group)
        using function HAL_ADC_ConfigChannel().

    (#) Optionally, configure the analog watchdog parameters (channels
        monitored, thresholds, ...)
        using function HAL_ADC_AnalogWDGConfig().

     *** Execution of ADC conversions ***
     ====================================
     [..]

    (#) Optionally, perform an automatic ADC calibration to improve the
        conversion accuracy
        using function HAL_ADCEx_Calibration_Start().

    (#) ADC driver can be used among three modes: polling, interruption,
        transfer by DMA.

        (++) ADC conversion by polling:
          (+++) Activate the ADC peripheral and start conversions
                using function HAL_ADC_Start()
          (+++) Wait for ADC conversion completion 
                using function HAL_ADC_PollForConversion()
          (+++) Retrieve conversion results 
                using function HAL_ADC_GetValue()
          (+++) Stop conversion and disable the ADC peripheral 
                using function HAL_ADC_Stop()

        (++) ADC conversion by interruption: 
          (+++) Activate the ADC peripheral and start conversions
                using function HAL_ADC_Start_IT()
          (+++) Wait for ADC conversion completion by call of function
                HAL_ADC_ConvCpltCallback()
                (this function must be implemented in user program)
          (+++) Retrieve conversion results 
                using function HAL_ADC_GetValue()
          (+++) Stop conversion and disable the ADC peripheral 
                using function HAL_ADC_Stop_IT()

        (++) ADC conversion with transfer by DMA:
          (+++) Activate the ADC peripheral and start conversions
                using function HAL_ADC_Start_DMA()
          (+++) Wait for ADC conversion completion by call of function
                HAL_ADC_ConvCpltCallback() or HAL_ADC_ConvHalfCpltCallback()
                (these functions must be implemented in user program)
          (+++) Conversion results are automatically transferred by DMA into
                destination variable address.
          (+++) Stop conversion and disable the ADC peripheral 
                using function HAL_ADC_Stop_DMA()

     [..]

    (@) Callback functions must be implemented in user program:
      (+@) HAL_ADC_ErrorCallback()
      (+@) HAL_ADC_LevelOutOfWindowCallback() (callback of analog watchdog)
      (+@) HAL_ADC_ConvCpltCallback()
      (+@) HAL_ADC_ConvHalfCpltCallback

     *** Deinitialization of ADC ***
     ============================================================
     [..]

    (#) Disable the ADC interface
      (++) ADC clock can be hard reset and disabled at RCC top level.
        (++) Hard reset of ADC peripherals
             using macro __ADCx_FORCE_RESET(), __ADCx_RELEASE_RESET().
        (++) ADC clock disable
             using the equivalent macro/functions as configuration step.
             (+++) Example:
                   Into HAL_ADC_MspDeInit() (recommended code location) or with
                   other device clock parameters configuration:
               (+++) RCC_OscInitStructure.OscillatorType = RCC_OSCILLATORTYPE_HSI14;
               (+++) RCC_OscInitStructure.HSI14State = RCC_HSI14_OFF; (if not used for system clock)
               (+++) HAL_RCC_OscConfig(&RCC_OscInitStructure);

    (#) ADC pins configuration
         (++) Disable the clock for the ADC GPIOs
              using macro __HAL_RCC_GPIOx_CLK_DISABLE()

    (#) Optionally, in case of usage of ADC with interruptions:
         (++) Disable the NVIC for ADC
              using function HAL_NVIC_EnableIRQ(ADCx_IRQn)

    (#) Optionally, in case of usage of DMA:
         (++) Deinitialize the DMA
              using function HAL_DMA_Init().
         (++) Disable the NVIC for DMA
              using function HAL_NVIC_EnableIRQ(DMAx_Channelx_IRQn)

    [..]
    
    *** Callback registration ***
    =============================================
    [..]

     The compilation flag USE_HAL_ADC_REGISTER_CALLBACKS, when set to 1,
     allows the user to configure dynamically the driver callbacks.
     Use Functions @ref HAL_ADC_RegisterCallback()
     to register an interrupt callback.
    [..]

     Function @ref HAL_ADC_RegisterCallback() allows to register following callbacks:
       (+) ConvCpltCallback               : ADC conversion complete callback
       (+) ConvHalfCpltCallback           : ADC conversion DMA half-transfer callback
       (+) LevelOutOfWindowCallback       : ADC analog watchdog 1 callback
       (+) ErrorCallback                  : ADC error callback
       (+) LevelOutOfWindow2Callback      : ADC analog watchdog 2 callback
       (+) LevelOutOfWindow3Callback      : ADC analog watchdog 3 callback
       (+) EndOfSamplingCallback          : ADC end of sampling callback
       (+) MspInitCallback                : ADC Msp Init callback
       (+) MspDeInitCallback              : ADC Msp DeInit callback
     This function takes as parameters the HAL peripheral handle, the Callback ID
     and a pointer to the user callback function.
    [..]

     Use function @ref HAL_ADC_UnRegisterCallback to reset a callback to the default
     weak function.
    [..]

     @ref HAL_ADC_UnRegisterCallback takes as parameters the HAL peripheral handle,
     and the Callback ID.
     This function allows to reset following callbacks:
       (+) ConvCpltCallback               : ADC conversion complete callback
       (+) ConvHalfCpltCallback           : ADC conversion DMA half-transfer callback
       (+) LevelOutOfWindowCallback       : ADC analog watchdog 1 callback
       (+) ErrorCallback                  : ADC error callback
       (+) LevelOutOfWindow2Callback      : ADC analog watchdog 2 callback
       (+) LevelOutOfWindow3Callback      : ADC analog watchdog 3 callback
       (+) EndOfSamplingCallback          : ADC end of sampling callback
       (+) MspInitCallback                : ADC Msp Init callback
       (+) MspDeInitCallback              : ADC Msp DeInit callback
     [..]

     By default, after the @ref HAL_ADC_Init() and when the state is @ref HAL_ADC_STATE_RESET
     all callbacks are set to the corresponding weak functions:
     examples @ref HAL_ADC_ConvCpltCallback(), @ref HAL_ADC_ErrorCallback().
     Exception done for MspInit and MspDeInit functions that are
     reset to the legacy weak functions in the @ref HAL_ADC_Init()/ @ref HAL_ADC_DeInit() only when
     these callbacks are null (not registered beforehand).
    [..]

     If MspInit or MspDeInit are not null, the @ref HAL_ADC_Init()/ @ref HAL_ADC_DeInit()
     keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state.
     [..]

     Callbacks can be registered/unregistered in @ref HAL_ADC_STATE_READY state only.
     Exception done MspInit/MspDeInit functions that can be registered/unregistered
     in @ref HAL_ADC_STATE_READY or @ref HAL_ADC_STATE_RESET state,
     thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
    [..]

     Then, the user first registers the MspInit/MspDeInit user callbacks
     using @ref HAL_ADC_RegisterCallback() before calling @ref HAL_ADC_DeInit()
     or @ref HAL_ADC_Init() function.
     [..]

     When the compilation flag USE_HAL_ADC_REGISTER_CALLBACKS is set to 0 or
     not defined, the callback registration feature is not available and all callbacks
     are set to the corresponding weak functions.
  
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2018 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
  *
  ******************************************************************************  
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32g0xx_hal.h"

/** @addtogroup STM32G0xx_HAL_Driver
  * @{
  */

/** @defgroup ADC ADC
  * @brief ADC HAL module driver
  * @{
  */

#ifdef HAL_ADC_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/

/** @defgroup ADC_Private_Constants ADC Private Constants
  * @{
  */

/* Fixed timeout values for ADC calibration, enable settling time, disable  */
/* settling time.                                                           */
/* Values defined to be higher than worst cases: low clock frequency,       */
/* maximum prescaler.                                                       */
/* Ex of profile low frequency : Clock source at 0.1 MHz, ADC clock         */
/* prescaler 4, sampling time 7.5 ADC clock cycles, resolution 12 bits.     */
/* Unit: ms                                                                 */
#define ADC_ENABLE_TIMEOUT              (2UL)
#define ADC_DISABLE_TIMEOUT             (2UL)
#define ADC_STOP_CONVERSION_TIMEOUT     (2UL)
#define ADC_CHANNEL_CONF_RDY_TIMEOUT    (1UL)

/* Register CHSELR bits corresponding to ranks 2 to 8 .                     */
#define ADC_CHSELR_SQ2_TO_SQ8           (ADC_CHSELR_SQ2 | ADC_CHSELR_SQ3 | ADC_CHSELR_SQ4 | ADC_CHSELR_SQ5 | ADC_CHSELR_SQ6 | ADC_CHSELR_SQ7 | ADC_CHSELR_SQ8)

/**
  * @}
  */

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup ADC_Private_Functions ADC Private Functions
  * @{
  */
static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma);
static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma);
static void ADC_DMAError(DMA_HandleTypeDef *hdma);
/**
  * @}
  */

/* Exported functions ---------------------------------------------------------*/

/** @defgroup ADC_Exported_Functions ADC Exported Functions
  * @{
  */

/** @defgroup ADC_Exported_Functions_Group1 Initialization and de-initialization functions
  * @brief    ADC Initialization and Configuration functions
  *
@verbatim    
 ===============================================================================
              ##### Initialization and de-initialization functions #####
 ===============================================================================
    [..]  This section provides functions allowing to:
      (+) Initialize and configure the ADC. 
      (+) De-initialize the ADC.
@endverbatim
  * @{
  */

/**
  * @brief  Initialize the ADC peripheral and regular group according to  
  *         parameters specified in structure "ADC_InitTypeDef".
  * @note   As prerequisite, ADC clock must be configured at RCC top level
  *         (refer to description of RCC configuration for ADC
  *         in header of this file).
  * @note   Possibility to update parameters on the fly:
  *         This function initializes the ADC MSP (HAL_ADC_MspInit()) only when
  *         coming from ADC state reset. Following calls to this function can
  *         be used to reconfigure some parameters of ADC_InitTypeDef  
  *         structure on the fly, without modifying MSP configuration. If ADC  
  *         MSP has to be modified again, HAL_ADC_DeInit() must be called
  *         before HAL_ADC_Init().
  *         The setting of these parameters is conditioned to ADC state.
  *         For parameters constraints, see comments of structure 
  *         "ADC_InitTypeDef".
  * @note   This function configures the ADC within 2 scopes: scope of entire 
  *         ADC and scope of regular group. For parameters details, see comments 
  *         of structure "ADC_InitTypeDef".
  * @param hadc ADC handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_Init(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status = HAL_OK;
  uint32_t tmpCFGR1 = 0UL;
  uint32_t tmpCFGR2 = 0UL;
  uint32_t tmp_adc_reg_is_conversion_on_going;
  __IO uint32_t wait_loop_index = 0UL;
  
  /* Check ADC handle */
  if(hadc == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  assert_param(IS_ADC_CLOCKPRESCALER(hadc->Init.ClockPrescaler));
  assert_param(IS_ADC_RESOLUTION(hadc->Init.Resolution));
  assert_param(IS_ADC_DATA_ALIGN(hadc->Init.DataAlign));
  assert_param(IS_ADC_SCAN_MODE(hadc->Init.ScanConvMode));
  assert_param(IS_FUNCTIONAL_STATE(hadc->Init.ContinuousConvMode));
  assert_param(IS_ADC_EXTTRIG_EDGE(hadc->Init.ExternalTrigConvEdge));
  assert_param(IS_ADC_EXTTRIG(hadc->Init.ExternalTrigConv));
  assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DMAContinuousRequests));
  assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection));
  assert_param(IS_ADC_OVERRUN(hadc->Init.Overrun));
  assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoWait));
  assert_param(IS_FUNCTIONAL_STATE(hadc->Init.LowPowerAutoPowerOff));
  assert_param(IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTimeCommon1));
  assert_param(IS_ADC_SAMPLE_TIME(hadc->Init.SamplingTimeCommon2));
  assert_param(IS_FUNCTIONAL_STATE(hadc->Init.OversamplingMode));
  
  assert_param(IS_ADC_TRIGGER_FREQ(hadc->Init.TriggerFrequencyMode));

  if(hadc->Init.ScanConvMode != ADC_SCAN_DISABLE)
  {
    assert_param(IS_FUNCTIONAL_STATE(hadc->Init.DiscontinuousConvMode));
    
    if(hadc->Init.ScanConvMode == ADC_SCAN_ENABLE)
    {
      assert_param(IS_ADC_REGULAR_NB_CONV(hadc->Init.NbrOfConversion));
    }
  }
  
  /* ADC group regular discontinuous mode can be enabled only if              */
  /* continuous mode is disabled.                                             */
  assert_param(!((hadc->Init.DiscontinuousConvMode == ENABLE) && (hadc->Init.ContinuousConvMode == ENABLE)));
  
  /* Actions performed only if ADC is coming from state reset:                */
  /* - Initialization of ADC MSP                                              */
  if(hadc->State == HAL_ADC_STATE_RESET)
  {
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    /* Init the ADC Callback settings */
    hadc->ConvCpltCallback              = HAL_ADC_ConvCpltCallback;                 /* Legacy weak callback */
    hadc->ConvHalfCpltCallback          = HAL_ADC_ConvHalfCpltCallback;             /* Legacy weak callback */
    hadc->LevelOutOfWindowCallback      = HAL_ADC_LevelOutOfWindowCallback;         /* Legacy weak callback */
    hadc->ErrorCallback                 = HAL_ADC_ErrorCallback;                    /* Legacy weak callback */
    hadc->LevelOutOfWindow2Callback     = HAL_ADCEx_LevelOutOfWindow2Callback;      /* Legacy weak callback */
    hadc->LevelOutOfWindow3Callback     = HAL_ADCEx_LevelOutOfWindow3Callback;      /* Legacy weak callback */
    hadc->EndOfSamplingCallback         = HAL_ADCEx_EndOfSamplingCallback;          /* Legacy weak callback */
    
    if (hadc->MspInitCallback == NULL)
    {
      hadc->MspInitCallback = HAL_ADC_MspInit; /* Legacy weak MspInit  */
    }
    
    /* Init the low level hardware */
    hadc->MspInitCallback(hadc);
#else
    /* Init the low level hardware */
    HAL_ADC_MspInit(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Set ADC error code to none */
    ADC_CLEAR_ERRORCODE(hadc);
    
    /* Initialize Lock */
    hadc->Lock = HAL_UNLOCKED;
  }
  
  if(LL_ADC_IsInternalRegulatorEnabled(hadc->Instance) == 0UL)
  {
    /* Enable ADC internal voltage regulator */
    LL_ADC_EnableInternalRegulator(hadc->Instance);
    
    /* Delay for ADC stabilization time */
    /* Wait loop initialization and execution */
    /* Note: Variable divided by 2 to compensate partially              */
    /*       CPU processing cycles, scaling in us split to not          */
    /*       exceed 32 bits register capacity and handle low frequency. */
    wait_loop_index = ((LL_ADC_DELAY_INTERNAL_REGUL_STAB_US / 10UL) * (SystemCoreClock / (100000UL * 2UL)));
    while(wait_loop_index != 0UL)
    {
      wait_loop_index--;
    }
  }
  
  /* Verification that ADC voltage regulator is correctly enabled, whether    */
  /* or not ADC is coming from state reset (if any potential problem of       */
  /* clocking, voltage regulator would not be enabled).                       */
  if(LL_ADC_IsInternalRegulatorEnabled(hadc->Instance) == 0UL)
  {
    /* Update ADC state machine to error */
    SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
    
    /* Set ADC error code to ADC peripheral internal error */
    SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
    
    tmp_hal_status = HAL_ERROR;
  }
  
  /* Configuration of ADC parameters if previous preliminary actions are      */ 
  /* correctly completed and if there is no conversion on going on regular    */
  /* group (ADC may already be enabled at this point if HAL_ADC_Init() is     */
  /* called to update a parameter on the fly).                                */
  tmp_adc_reg_is_conversion_on_going = LL_ADC_REG_IsConversionOngoing(hadc->Instance);
  
  if(   ((hadc->State & HAL_ADC_STATE_ERROR_INTERNAL) == 0UL)
     && (tmp_adc_reg_is_conversion_on_going == 0UL)
    )
  {
    /* Set ADC state */
    ADC_STATE_CLR_SET(hadc->State,
                      HAL_ADC_STATE_REG_BUSY,
                      HAL_ADC_STATE_BUSY_INTERNAL);
    
    /* Configuration of common ADC parameters                                 */
    
    /* Parameters update conditioned to ADC state:                            */
    /* Parameters that can be updated only when ADC is disabled:              */
    /*  - Internal voltage regulator (no parameter in HAL ADC init structure) */
    /*  - Clock configuration                                                 */
    /*  - ADC resolution                                                      */
    /* Note: If low power mode AutoPowerOff is enabled, ADC enable            */
    /*       and disable phases are performed automatically by hardware       */
    /*       (in this case, flag ADC_FLAG_RDY is not set).                    */
    if (LL_ADC_IsEnabled(hadc->Instance) == 0UL)
    {
      /* Some parameters of this register are not reset, since they are set   */
      /* by other functions and must be kept in case of usage of this         */
      /* function on the fly (update of a parameter of ADC_InitTypeDef        */
      /* without needing to reconfigure all other ADC groups/channels         */
      /* parameters):                                                         */
      /*   - internal measurement paths: Vbat, temperature sensor, Vref       */
      /*     (set into HAL_ADC_ConfigChannel() )                              */
      
      /* Configuration of ADC resolution                                      */
      MODIFY_REG(hadc->Instance->CFGR1,
                 ADC_CFGR1_RES        ,
                 hadc->Init.Resolution );
      
      /* Configuration of ADC clock mode: clock source AHB or HSI with        */
      /* selectable prescaler.                                                */
      MODIFY_REG(hadc->Instance->CFGR2                       ,
                 ADC_CFGR2_CKMODE                            ,
                 hadc->Init.ClockPrescaler & ADC_CFGR2_CKMODE );
      
      if (((hadc->Init.ClockPrescaler) != ADC_CLOCK_SYNC_PCLK_DIV1) &&
          ((hadc->Init.ClockPrescaler) != ADC_CLOCK_SYNC_PCLK_DIV2) &&
          ((hadc->Init.ClockPrescaler) != ADC_CLOCK_SYNC_PCLK_DIV4))
      {
        MODIFY_REG(ADC1_COMMON->CCR                         ,
                   ADC_CCR_PRESC                            ,
                   hadc->Init.ClockPrescaler & ADC_CCR_PRESC );
      }
    }
    
    /* Configuration of ADC:                                                  */
    /*  - discontinuous mode                                                  */
    /*  - LowPowerAutoWait mode                                               */
    /*  - LowPowerAutoPowerOff mode                                           */
    /*  - continuous conversion mode                                          */
    /*  - overrun                                                             */
    /*  - external trigger to start conversion                                */
    /*  - external trigger polarity                                           */
    /*  - data alignment                                                      */
    /*  - resolution                                                          */
    /*  - scan direction                                                      */
    /*  - DMA continuous request                                              */
    tmpCFGR1 |= (ADC_CFGR1_AUTOWAIT((uint32_t)hadc->Init.LowPowerAutoWait)        |
                 ADC_CFGR1_AUTOOFF((uint32_t)hadc->Init.LowPowerAutoPowerOff)     |
                 ADC_CFGR1_CONTINUOUS((uint32_t)hadc->Init.ContinuousConvMode)    |
                 ADC_CFGR1_OVERRUN(hadc->Init.Overrun)                            |
                 hadc->Init.DataAlign                                             |
                 ADC_SCAN_SEQ_MODE(hadc->Init.ScanConvMode)                       |
                 ADC_CFGR1_DMACONTREQ((uint32_t)hadc->Init.DMAContinuousRequests)  );
    
    /* Update setting of discontinuous mode only if continuous mode is disabled */
    if (hadc->Init.DiscontinuousConvMode == ENABLE)
    {
      if (hadc->Init.ContinuousConvMode == DISABLE)
      {
        /* Enable the selected ADC group regular discontinuous mode */
        tmpCFGR1 |= ADC_CFGR1_DISCEN;
      }
      else
      {
        /* ADC regular group discontinuous was intended to be enabled,        */
        /* but ADC regular group modes continuous and sequencer discontinuous */
        /* cannot be enabled simultaneously.                                  */
        
        /* Update ADC state machine to error */
        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
        
        /* Set ADC error code to ADC peripheral internal error */
        SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
      }
    }
    
    /* Enable external trigger if trigger selection is different of software  */
    /* start.                                                                 */
    /* Note: This configuration keeps the hardware feature of parameter       */
    /*       ExternalTrigConvEdge "trigger edge none" equivalent to           */
    /*       software start.                                                  */
    if (hadc->Init.ExternalTrigConv != ADC_SOFTWARE_START)
    {
      tmpCFGR1 |= ( (hadc->Init.ExternalTrigConv & ADC_CFGR1_EXTSEL) |
                     hadc->Init.ExternalTrigConvEdge );
    }
    
    /* Configuration of ADC:                                                  */
    /*  - oversampling enable                                                 */
    /*  - oversampling ratio                                                  */
    /*  - oversampling shift                                                  */
    /*  - oversampling discontinuous mode (triggered mode)                    */
    /*  - trigger frequency mode                                              */
    tmpCFGR2 |= ( hadc->Init.Oversampling.Ratio         |
                  hadc->Init.Oversampling.RightBitShift |
                  hadc->Init.Oversampling.TriggeredMode |
                  hadc->Init.TriggerFrequencyMode
                  );
    
    if (hadc->Init.OversamplingMode == ENABLE)
    {
      SET_BIT(tmpCFGR2, ADC_CFGR2_OVSE);
    }
    
    /* Update ADC configuration register with previous settings */
    MODIFY_REG(hadc->Instance->CFGR1,
               ADC_CFGR1_DISCEN  |
               ADC_CFGR1_AUTOFF  |
               ADC_CFGR1_WAIT    |
               ADC_CFGR1_CONT    |
               ADC_CFGR1_OVRMOD  |
               ADC_CFGR1_EXTSEL  |
               ADC_CFGR1_EXTEN   |
               ADC_CFGR1_ALIGN   |
               ADC_CFGR1_SCANDIR |
               ADC_CFGR1_DMACFG     ,
               tmpCFGR1              );
    
    MODIFY_REG(hadc->Instance->CFGR2,
               ADC_CFGR2_LFTRIG |
               ADC_CFGR2_OVSE   |
               ADC_CFGR2_OVSR   |
               ADC_CFGR2_OVSS   |
               ADC_CFGR2_TOVS       ,
               tmpCFGR2              );
    
    /* Channel sampling time configuration */
    LL_ADC_SetSamplingTimeCommonChannels(hadc->Instance, LL_ADC_SAMPLINGTIME_COMMON_1, hadc->Init.SamplingTimeCommon1);
    LL_ADC_SetSamplingTimeCommonChannels(hadc->Instance, LL_ADC_SAMPLINGTIME_COMMON_2, hadc->Init.SamplingTimeCommon2);
    
    /* Configuration of regular group sequencer:                              */
    /* - if scan mode is disabled, regular channels sequence length is set to */
    /*   0x00: 1 channel converted (channel on regular rank 1)                */
    /*   Parameter "NbrOfConversion" is discarded.                            */
    /*   Note: Scan mode is not present by hardware on this device, but       */
    /*   emulated by software for alignment over all STM32 devices.           */
    /* - if scan mode is enabled, regular channels sequence length is set to  */
    /*   parameter "NbrOfConversion".                                         */
    /*   Channels must be configured into each rank using function            */
    /*   "HAL_ADC_ConfigChannel()".                                           */
    if(hadc->Init.ScanConvMode == ADC_SCAN_DISABLE)
    {
      /* Set sequencer scan length by clearing ranks above rank 1             */
      /* and do not modify rank 1 value.                                      */
      SET_BIT(hadc->Instance->CHSELR,
              ADC_CHSELR_SQ2_TO_SQ8);
    }
    else if(hadc->Init.ScanConvMode == ADC_SCAN_ENABLE)
    {
      /* Count number of ranks available in HAL ADC handle variable */
      uint32_t ADCGroupRegularSequencerRanksCount;
      
      /* Parse all ranks from 1 to 8 */
      for(ADCGroupRegularSequencerRanksCount = 0UL; ADCGroupRegularSequencerRanksCount < (8UL); ADCGroupRegularSequencerRanksCount++)
      {
        /* Check each sequencer rank until value of end of sequence */
        if(((hadc->ADCGroupRegularSequencerRanks >> (ADCGroupRegularSequencerRanksCount * 4UL)) & ADC_CHSELR_SQ1) == ADC_CHSELR_SQ1)
        {
          break;
        }
      }
      
      if(ADCGroupRegularSequencerRanksCount == 1UL)
      {
        /* Set ADC group regular sequencer:                                   */
        /* Set sequencer scan length by clearing ranks above rank 1           */
        /* and do not modify rank 1 value.                                    */
        SET_BIT(hadc->Instance->CHSELR,
                ADC_CHSELR_SQ2_TO_SQ8);
      }
      else
      {
        /* Set ADC group regular sequencer:                                   */
        /*  - Set ADC group regular sequencer to value memorized              */
        /*    in HAL ADC handle                                               */
        /*    Note: This value maybe be initialized at a unknown value,       */
        /*          therefore afer the first call of "HAL_ADC_Init()",        */
        /*          each rank corresponding to parameter "NbrOfConversion"    */
        /*          must be set using "HAL_ADC_ConfigChannel()".              */
        /*  - Set sequencer scan length by clearing ranks above maximum rank  */
        /*    and do not modify other ranks value.                            */
        MODIFY_REG(hadc->Instance->CHSELR,
                   ADC_CHSELR_SQ_ALL,
                   (ADC_CHSELR_SQ2_TO_SQ8 << (((hadc->Init.NbrOfConversion - 1UL) * ADC_REGULAR_RANK_2) & 0x1FUL)) | (hadc->ADCGroupRegularSequencerRanks)
                  );
      }
    }
    
    /* Check back that ADC registers have effectively been configured to      */
    /* ensure of no potential problem of ADC core peripheral clocking.        */
    /* Check through register CFGR1 (excluding analog watchdog configuration: */
    /* set into separate dedicated function, and bits of ADC resolution set   */
    /* out of temporary variable 'tmpCFGR1').                                 */
    if ((hadc->Instance->CFGR1 & ~(ADC_CFGR1_AWD1CH | ADC_CFGR1_AWD1EN | ADC_CFGR1_AWD1SGL | ADC_CFGR1_RES))
         == tmpCFGR1)
    {
      /* Set ADC error code to none */
      ADC_CLEAR_ERRORCODE(hadc);
      
      /* Set the ADC state */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_BUSY_INTERNAL,
                        HAL_ADC_STATE_READY);
    }
    else
    {
      /* Update ADC state machine to error */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_BUSY_INTERNAL,
                        HAL_ADC_STATE_ERROR_INTERNAL);
      
      /* Set ADC error code to ADC peripheral internal error */
      SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
      
      tmp_hal_status = HAL_ERROR;
    }
  
  }
  else
  {
    /* Update ADC state machine to error */
    SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
    
    tmp_hal_status = HAL_ERROR;
  }
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Deinitialize the ADC peripheral registers to their default reset
  *         values, with deinitialization of the ADC MSP.
  * @note   For devices with several ADCs: reset of ADC common registers is done 
  *         only if all ADCs sharing the same common group are disabled.
  *         (function "HAL_ADC_MspDeInit()" is also called under the same conditions:
  *         all ADC instances use the same core clock at RCC level, disabling
  *         the core clock reset all ADC instances).
  *         If this is not the case, reset of these common parameters reset is  
  *         bypassed without error reporting: it can be the intended behavior in
  *         case of reset of a single ADC while the other ADCs sharing the same 
  *         common group is still running.
  * @note   By default, HAL_ADC_DeInit() set ADC in mode deep power-down:
  *         this saves more power by reducing leakage currents 
  *         and is particularly interesting before entering MCU low-power modes.
  * @param hadc ADC handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_DeInit(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check ADC handle */
  if(hadc == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Set ADC state */
  SET_BIT(hadc->State, HAL_ADC_STATE_BUSY_INTERNAL);
  
  /* Stop potential conversion on going, on regular group */
  tmp_hal_status = ADC_ConversionStop(hadc);
  
  /* Disable ADC peripheral if conversions are effectively stopped */
  if (tmp_hal_status == HAL_OK)
  {
    /* Disable the ADC peripheral */
    tmp_hal_status = ADC_Disable(hadc);
    
    /* Check if ADC is effectively disabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Change ADC state */
      hadc->State = HAL_ADC_STATE_READY;
    }
  }
  
  /* Note: HAL ADC deInit is done independently of ADC conversion stop        */
  /*       and disable return status. In case of status fail, attempt to      */
  /*       perform deinitialization anyway and it is up user code in          */
  /*       in HAL_ADC_MspDeInit() to reset the ADC peripheral using           */
  /*       system RCC hard reset.                                             */
  
  /* ========== Reset ADC registers ========== */
  /* Reset register IER */
  __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_AWD3  | ADC_IT_AWD2 |
                              ADC_IT_AWD1  | ADC_IT_OVR  |
                              ADC_IT_EOS   | ADC_IT_EOC  |
                              ADC_IT_EOSMP | ADC_IT_RDY   ) );
  
  /* Reset register ISR */
  __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_AWD3  | ADC_FLAG_AWD2 |
                              ADC_FLAG_AWD1  | ADC_FLAG_OVR  |
                              ADC_FLAG_EOS   | ADC_FLAG_EOC  |
                              ADC_FLAG_EOSMP | ADC_FLAG_RDY   ) );
  
  /* Reset register CR */
  /* Bits ADC_CR_ADCAL, ADC_CR_ADSTP, ADC_CR_ADSTART are in access mode     */
  /* "read-set": no direct reset applicable.                                */
  
  /* Reset register CFGR1 */
  hadc->Instance->CFGR1 &= ~(ADC_CFGR1_AWD1CH   | ADC_CFGR1_AWD1EN  | ADC_CFGR1_AWD1SGL | ADC_CFGR1_DISCEN |
                             ADC_CFGR1_AUTOFF  | ADC_CFGR1_WAIT   | ADC_CFGR1_CONT   | ADC_CFGR1_OVRMOD |     
                             ADC_CFGR1_EXTEN   | ADC_CFGR1_EXTSEL | ADC_CFGR1_ALIGN  | ADC_CFGR1_RES    |
                             ADC_CFGR1_SCANDIR | ADC_CFGR1_DMACFG | ADC_CFGR1_DMAEN                      );
  
  /* Reset register CFGR2 */
  /* Note: Update of ADC clock mode is conditioned to ADC state disabled:   */
  /*       already done above.                                              */
  hadc->Instance->CFGR2 &= ~ADC_CFGR2_CKMODE;
  
  /* Reset register SMPR */
  hadc->Instance->SMPR &= ~ADC_SMPR_SMP1;
  
  /* Reset register TR1 */
  hadc->Instance->TR1 &= ~(ADC_TR1_HT1 | ADC_TR1_LT1);
  
  /* Reset register CHSELR */
  hadc->Instance->CHSELR &= ~(ADC_CHSELR_SQ_ALL);
  
  /* Reset register DR */
  /* bits in access mode read only, no direct reset applicable */
  
  /* Reset register CCR */
  ADC1_COMMON->CCR &= ~(ADC_CCR_VBATEN | ADC_CCR_TSEN | ADC_CCR_VREFEN | ADC_CCR_PRESC);
  
  /* ========== Hard reset ADC peripheral ========== */
  /* Performs a global reset of the entire ADC peripheral: ADC state is     */
  /* forced to a similar state after device power-on.                       */
  /* If needed, copy-paste and uncomment the following reset code into      */
  /* function "void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)":              */
  /*                                                                        */
  /*  __HAL_RCC_ADC1_FORCE_RESET()                                          */
  /*  __HAL_RCC_ADC1_RELEASE_RESET()                                        */
  
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
  if (hadc->MspDeInitCallback == NULL)
  {
    hadc->MspDeInitCallback = HAL_ADC_MspDeInit; /* Legacy weak MspDeInit  */
  }
  
  /* DeInit the low level hardware */
  hadc->MspDeInitCallback(hadc);
#else
  /* DeInit the low level hardware */
  HAL_ADC_MspDeInit(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
  
  /* Reset HAL ADC handle variable */
  hadc->ADCGroupRegularSequencerRanks = 0x00000000UL;
  
  /* Set ADC error code to none */
  ADC_CLEAR_ERRORCODE(hadc);
  
  /* Set ADC state */
  hadc->State = HAL_ADC_STATE_RESET;
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Initialize the ADC MSP.
  * @param hadc ADC handle
  * @retval None
  */
__weak void HAL_ADC_MspInit(ADC_HandleTypeDef* hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_MspInit must be implemented in the user file.
   */ 
}

/**
  * @brief  DeInitialize the ADC MSP.
  * @param hadc ADC handle
  * @note   All ADC instances use the same core clock at RCC level, disabling
  *         the core clock reset all ADC instances).
  * @retval None
  */
__weak void HAL_ADC_MspDeInit(ADC_HandleTypeDef* hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_MspDeInit must be implemented in the user file.
   */ 
}

#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
/**
  * @brief  Register a User ADC Callback
  *         To be used instead of the weak predefined callback
  * @param  hadc Pointer to a ADC_HandleTypeDef structure that contains
  *                the configuration information for the specified ADC.
  * @param  CallbackID ID of the callback to be registered
  *         This parameter can be one of the following values:
  *          @arg @ref HAL_ADC_CONVERSION_COMPLETE_CB_ID      ADC conversion complete callback ID
  *          @arg @ref HAL_ADC_CONVERSION_HALF_CB_ID          ADC conversion DMA half-transfer callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_1_CB_ID    ADC analog watchdog 1 callback ID
  *          @arg @ref HAL_ADC_ERROR_CB_ID                    ADC error callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_2_CB_ID    ADC analog watchdog 2 callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_3_CB_ID    ADC analog watchdog 3 callback ID
  *          @arg @ref HAL_ADC_END_OF_SAMPLING_CB_ID          ADC end of sampling callback ID
  *          @arg @ref HAL_ADC_MSPINIT_CB_ID                  ADC Msp Init callback ID
  *          @arg @ref HAL_ADC_MSPDEINIT_CB_ID                ADC Msp DeInit callback ID
  *          @arg @ref HAL_ADC_MSPINIT_CB_ID MspInit callback ID
  *          @arg @ref HAL_ADC_MSPDEINIT_CB_ID MspDeInit callback ID
  * @param  pCallback pointer to the Callback function
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_RegisterCallback(ADC_HandleTypeDef *hadc, HAL_ADC_CallbackIDTypeDef CallbackID, pADC_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  if (pCallback == NULL)
  {
    /* Update the error code */
    hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;

    return HAL_ERROR;
  }
  
  if ((hadc->State & HAL_ADC_STATE_READY) != 0UL)
  {
    switch (CallbackID)
    {
      case HAL_ADC_CONVERSION_COMPLETE_CB_ID :
        hadc->ConvCpltCallback = pCallback;
        break;
      
      case HAL_ADC_CONVERSION_HALF_CB_ID :
        hadc->ConvHalfCpltCallback = pCallback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_1_CB_ID :
        hadc->LevelOutOfWindowCallback = pCallback;
        break;
      
      case HAL_ADC_ERROR_CB_ID :
        hadc->ErrorCallback = pCallback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_2_CB_ID :
        hadc->LevelOutOfWindow2Callback = pCallback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_3_CB_ID :
        hadc->LevelOutOfWindow3Callback = pCallback;
        break;
      
      case HAL_ADC_END_OF_SAMPLING_CB_ID :
        hadc->EndOfSamplingCallback = pCallback;
        break;
      
      case HAL_ADC_MSPINIT_CB_ID :
        hadc->MspInitCallback = pCallback;
        break;
      
      case HAL_ADC_MSPDEINIT_CB_ID :
        hadc->MspDeInitCallback = pCallback;
        break;
      
      default :
        /* Update the error code */
        hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;

        /* Return error status */
        status = HAL_ERROR;
        break;
    }
  }
  else if (HAL_ADC_STATE_RESET == hadc->State)
  {
    switch (CallbackID)
    {
      case HAL_ADC_MSPINIT_CB_ID :
        hadc->MspInitCallback = pCallback;
        break;
      
      case HAL_ADC_MSPDEINIT_CB_ID :
        hadc->MspDeInitCallback = pCallback;
        break;
      
      default :
        /* Update the error code */
        hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;
      
        /* Return error status */
        status = HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;
    
    /* Return error status */
    status =  HAL_ERROR;
  }
  
  return status;
}

/**
  * @brief  Unregister a ADC Callback
  *         ADC callback is redirected to the weak predefined callback
  * @param  hadc Pointer to a ADC_HandleTypeDef structure that contains
  *                the configuration information for the specified ADC.
  * @param  CallbackID ID of the callback to be unregistered
  *         This parameter can be one of the following values:
  *          @arg @ref HAL_ADC_CONVERSION_COMPLETE_CB_ID      ADC conversion complete callback ID
  *          @arg @ref HAL_ADC_CONVERSION_HALF_CB_ID          ADC conversion DMA half-transfer callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_1_CB_ID    ADC analog watchdog 1 callback ID
  *          @arg @ref HAL_ADC_ERROR_CB_ID                    ADC error callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_2_CB_ID    ADC analog watchdog 2 callback ID
  *          @arg @ref HAL_ADC_LEVEL_OUT_OF_WINDOW_3_CB_ID    ADC analog watchdog 3 callback ID
  *          @arg @ref HAL_ADC_END_OF_SAMPLING_CB_ID          ADC end of sampling callback ID
  *          @arg @ref HAL_ADC_MSPINIT_CB_ID                  ADC Msp Init callback ID
  *          @arg @ref HAL_ADC_MSPDEINIT_CB_ID                ADC Msp DeInit callback ID
  *          @arg @ref HAL_ADC_MSPINIT_CB_ID MspInit callback ID
  *          @arg @ref HAL_ADC_MSPDEINIT_CB_ID MspDeInit callback ID
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_UnRegisterCallback(ADC_HandleTypeDef *hadc, HAL_ADC_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  if ((hadc->State & HAL_ADC_STATE_READY) != 0)
  {
    switch (CallbackID)
    {
      case HAL_ADC_CONVERSION_COMPLETE_CB_ID :
        hadc->ConvCpltCallback = HAL_ADC_ConvCpltCallback;
        break;
      
      case HAL_ADC_CONVERSION_HALF_CB_ID :
        hadc->ConvHalfCpltCallback = HAL_ADC_ConvHalfCpltCallback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_1_CB_ID :
        hadc->LevelOutOfWindowCallback = HAL_ADC_LevelOutOfWindowCallback;
        break;
      
      case HAL_ADC_ERROR_CB_ID :
        hadc->ErrorCallback = HAL_ADC_ErrorCallback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_2_CB_ID :
        hadc->LevelOutOfWindow2Callback = HAL_ADCEx_LevelOutOfWindow2Callback;
        break;
      
      case HAL_ADC_LEVEL_OUT_OF_WINDOW_3_CB_ID :
        hadc->LevelOutOfWindow3Callback = HAL_ADCEx_LevelOutOfWindow3Callback;
        break;
      
      case HAL_ADC_END_OF_SAMPLING_CB_ID :
        hadc->EndOfSamplingCallback = HAL_ADCEx_EndOfSamplingCallback;
        break;
      
      case HAL_ADC_MSPINIT_CB_ID :
        hadc->MspInitCallback = HAL_ADC_MspInit; /* Legacy weak MspInit              */
        break;
      
      case HAL_ADC_MSPDEINIT_CB_ID :
        hadc->MspDeInitCallback = HAL_ADC_MspDeInit; /* Legacy weak MspDeInit            */
        break;
      
      default :
        /* Update the error code */
        hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;
        
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (HAL_ADC_STATE_RESET == hadc->State)
  {
    switch (CallbackID)
    {
      case HAL_ADC_MSPINIT_CB_ID :
        hadc->MspInitCallback = HAL_ADC_MspInit;                   /* Legacy weak MspInit              */
        break;
        
      case HAL_ADC_MSPDEINIT_CB_ID :
        hadc->MspDeInitCallback = HAL_ADC_MspDeInit;               /* Legacy weak MspDeInit            */
        break;
        
      default :
        /* Update the error code */
        hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;
        
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    hadc->ErrorCode |= HAL_ADC_ERROR_INVALID_CALLBACK;
    
    /* Return error status */
    status =  HAL_ERROR;
  }
  
  return status;
}

#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */

/**
  * @}
  */

/** @defgroup ADC_Exported_Functions_Group2 ADC Input and Output operation functions
 *  @brief    ADC IO operation functions 
 *
@verbatim   
 ===============================================================================
                      ##### IO operation functions #####
 ===============================================================================
    [..]  This section provides functions allowing to:
      (+) Start conversion of regular group.
      (+) Stop conversion of regular group.
      (+) Poll for conversion complete on regular group.
      (+) Poll for conversion event.
      (+) Get result of regular channel conversion.
      (+) Start conversion of regular group and enable interruptions.
      (+) Stop conversion of regular group and disable interruptions.
      (+) Handle ADC interrupt request
      (+) Start conversion of regular group and enable DMA transfer.
      (+) Stop conversion of regular group and disable ADC DMA transfer.
@endverbatim
  * @{
  */

/**
  * @brief  Enable ADC, start conversion of regular group.
  * @note   Interruptions enabled in this function: None.
  * @param hadc ADC handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_Start(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Perform ADC enable and conversion start if no conversion is on going */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
  {
    /* Process locked */
    __HAL_LOCK(hadc);
    
    /* Enable the ADC peripheral */
    tmp_hal_status = ADC_Enable(hadc);
    
    /* Start conversion if ADC is effectively enabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state                                                        */
      /* - Clear state bitfield related to regular group conversion results   */
      /* - Set state bitfield related to regular operation                    */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
                        HAL_ADC_STATE_REG_BUSY);
      
      /* Set ADC error code */
      /* Reset all ADC error code fields */
      ADC_CLEAR_ERRORCODE(hadc);
      
      /* Clear ADC group regular conversion flag and overrun flag               */
      /* (To ensure of no unknown state from potential previous ADC operations) */
      __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
      
      /* Process unlocked */
      /* Unlock before starting ADC conversions: in case of potential         */
      /* interruption, to let the process to ADC IRQ Handler.                 */
      __HAL_UNLOCK(hadc);
      
      /* Enable conversion of regular group.                                  */
      /* If software start has been selected, conversion starts immediately.  */
      /* If external trigger has been selected, conversion will start at next */
      /* trigger event.                                                       */
      /* Start ADC group regular conversion */
      LL_ADC_REG_StartConversion(hadc->Instance);
    }
    else
    {
      /* Process unlocked */
      __HAL_UNLOCK(hadc);
    }
  }
  else
  {
    tmp_hal_status = HAL_BUSY;
  }
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Stop ADC conversion of regular group (and injected channels in 
  *         case of auto_injection mode), disable ADC peripheral.
  * @note:  ADC peripheral disable is forcing stop of potential 
  *         conversion on injected group. If injected group is under use, it
  *         should be preliminarily stopped using HAL_ADCEx_InjectedStop function.
  * @param hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_ADC_Stop(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Process locked */
  __HAL_LOCK(hadc);
  
  /* 1. Stop potential conversion on going, on ADC group regular */
  tmp_hal_status = ADC_ConversionStop(hadc);
  
  /* Disable ADC peripheral if conversions are effectively stopped */
  if (tmp_hal_status == HAL_OK)
  {
    /* 2. Disable the ADC peripheral */
    tmp_hal_status = ADC_Disable(hadc);
    
    /* Check if ADC is effectively disabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_REG_BUSY,
                        HAL_ADC_STATE_READY);
    }
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Wait for regular group conversion to be completed.
  * @note   ADC conversion flags EOS (end of sequence) and EOC (end of
  *         conversion) are cleared by this function, with an exception:
  *         if low power feature "LowPowerAutoWait" is enabled, flags are 
  *         not cleared to not interfere with this feature until data register
  *         is read using function HAL_ADC_GetValue().
  * @note   This function cannot be used in a particular setup: ADC configured 
  *         in DMA mode and polling for end of each conversion (ADC init
  *         parameter "EOCSelection" set to ADC_EOC_SINGLE_CONV).
  *         In this case, DMA resets the flag EOC and polling cannot be
  *         performed on each conversion. Nevertheless, polling can still 
  *         be performed on the complete sequence (ADC init
  *         parameter "EOCSelection" set to ADC_EOC_SEQ_CONV).
  * @param hadc ADC handle
  * @param Timeout Timeout value in millisecond.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_PollForConversion(ADC_HandleTypeDef* hadc, uint32_t Timeout)
{
  uint32_t tickstart;
  uint32_t tmp_Flag_End;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* If end of conversion selected to end of sequence conversions */
  if (hadc->Init.EOCSelection == ADC_EOC_SEQ_CONV)
  {
    tmp_Flag_End = ADC_FLAG_EOS;
  }
  /* If end of conversion selected to end of unitary conversion */
  else /* ADC_EOC_SINGLE_CONV */
  {
    /* Verification that ADC configuration is compliant with polling for      */
    /* each conversion:                                                       */
    /* Particular case is ADC configured in DMA mode and ADC sequencer with   */
    /* several ranks and polling for end of each conversion.                  */
    /* For code simplicity sake, this particular case is generalized to       */
    /* ADC configured in DMA mode and and polling for end of each conversion. */
    if ((hadc->Instance->CFGR1 & ADC_CFGR1_DMAEN) != 0UL)
    {
      /* Update ADC state machine to error */
      SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
      
      return HAL_ERROR;
    }
    else
    {
      tmp_Flag_End = (ADC_FLAG_EOC);
    }
  }
  
  /* Get tick count */
  tickstart = HAL_GetTick();
  
  /* Wait until End of unitary conversion or sequence conversions flag is raised */
  while((hadc->Instance->ISR & tmp_Flag_End) == 0UL)
  {
    /* Check if timeout is disabled (set to infinite wait) */
    if(Timeout != HAL_MAX_DELAY)
    {
      if(((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0UL))
      {
        /* Update ADC state machine to timeout */
        SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
        
        /* Process unlocked */
        __HAL_UNLOCK(hadc);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  /* Update ADC state machine */
  SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
  
  /* Determine whether any further conversion upcoming on group regular       */
  /* by external trigger, continuous mode or scan sequence on going.          */
  if(   (LL_ADC_REG_IsTriggerSourceSWStart(hadc->Instance) != 0UL)
     && (hadc->Init.ContinuousConvMode == DISABLE)
    )
  {
    /* Check whether end of sequence is reached */
    if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
    {
      /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit             */
      /* ADSTART==0 (no conversion on going)                                  */
      if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
      {
        /* Disable ADC end of single conversion interrupt on group regular */
        /* Note: Overrun interrupt was enabled with EOC interrupt in          */
        /* HAL_Start_IT(), but is not disabled here because can be used       */
        /* by overrun IRQ process below.                                      */
        __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
        
        /* Set ADC state */
        ADC_STATE_CLR_SET(hadc->State,
                          HAL_ADC_STATE_REG_BUSY,
                          HAL_ADC_STATE_READY);
      }
      else
      {
        /* Change ADC state to error state */
        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
        
        /* Set ADC error code to ADC peripheral internal error */
        SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
      }
    }
  }
  
  /* Clear end of conversion flag of regular group if low power feature       */
  /* "LowPowerAutoWait " is disabled, to not interfere with this feature      */
  /* until data register is read using function HAL_ADC_GetValue().           */
  if (hadc->Init.LowPowerAutoWait == DISABLE)
  {
    /* Clear regular group conversion flag */
    __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS));
  }
  
  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Poll for ADC event.
  * @param hadc ADC handle
  * @param EventType the ADC event type.
  *          This parameter can be one of the following values:
  *            @arg @ref ADC_EOSMP_EVENT  ADC End of Sampling event
  *            @arg @ref ADC_AWD1_EVENT   ADC Analog watchdog 1 event (main analog watchdog, present on all STM32 devices)
  *            @arg @ref ADC_AWD2_EVENT   ADC Analog watchdog 2 event (additional analog watchdog, not present on all STM32 families)
  *            @arg @ref ADC_AWD3_EVENT   ADC Analog watchdog 3 event (additional analog watchdog, not present on all STM32 families)
  *            @arg @ref ADC_OVR_EVENT    ADC Overrun event
  * @param Timeout Timeout value in millisecond.
  * @note   The relevant flag is cleared if found to be set, except for ADC_FLAG_OVR.
  *         Indeed, the latter is reset only if hadc->Init.Overrun field is set  
  *         to ADC_OVR_DATA_OVERWRITTEN. Otherwise, data register may be potentially overwritten 
  *         by a new converted data as soon as OVR is cleared.
  *         To reset OVR flag once the preserved data is retrieved, the user can resort
  *         to macro __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR); 
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_PollForEvent(ADC_HandleTypeDef* hadc, uint32_t EventType, uint32_t Timeout)
{
  uint32_t tickstart; 
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  assert_param(IS_ADC_EVENT_TYPE(EventType));
  
  /* Get tick count */
  tickstart = HAL_GetTick();
  
  /* Check selected event flag */
  while(__HAL_ADC_GET_FLAG(hadc, EventType) == 0UL)
  {
    /* Check if timeout is disabled (set to infinite wait) */
    if(Timeout != HAL_MAX_DELAY)
    {
      if(((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0UL))
      {
        /* Update ADC state machine to timeout */
        SET_BIT(hadc->State, HAL_ADC_STATE_TIMEOUT);
        
        /* Process unlocked */
        __HAL_UNLOCK(hadc);
        
        return HAL_TIMEOUT;
      }
    }
  }
  
  switch(EventType)
  {
  /* End Of Sampling event */
  case ADC_EOSMP_EVENT:
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOSMP);
     
    /* Clear the End Of Sampling flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP);
       
    break;  
  
  /* Analog watchdog (level out of window) event */
  /* Note: In case of several analog watchdog enabled, if needed to know      */
  /* which one triggered and on which ADCx, test ADC state of analog watchdog */
  /* flags HAL_ADC_STATE_AWD1/2/3 using function "HAL_ADC_GetState()".        */
  /* For example:                                                             */
  /*  " if ((HAL_ADC_GetState(hadc1) & HAL_ADC_STATE_AWD1) != 0UL) "          */
  /*  " if ((HAL_ADC_GetState(hadc1) & HAL_ADC_STATE_AWD2) != 0UL) "          */
  /*  " if ((HAL_ADC_GetState(hadc1) & HAL_ADC_STATE_AWD3) != 0UL) "          */
  
  /* Check analog watchdog 1 flag */
  case ADC_AWD_EVENT:
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
    
    /* Clear ADC analog watchdog flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD1);
    
    break;
  
  /* Check analog watchdog 2 flag */
  case ADC_AWD2_EVENT:
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD2);
      
    /* Clear ADC analog watchdog flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD2);
    
    break;
  
  /* Check analog watchdog 3 flag */
  case ADC_AWD3_EVENT:
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD3);
      
    /* Clear ADC analog watchdog flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD3);
    
    break;
  
  /* Overrun event */
  default: /* Case ADC_OVR_EVENT */
    /* If overrun is set to overwrite previous data, overrun event is not     */
    /* considered as an error.                                                */
    /* (cf ref manual "Managing conversions without using the DMA and without */
    /* overrun ")                                                             */
    if (hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED)
    {
      /* Set ADC state */
      SET_BIT(hadc->State, HAL_ADC_STATE_REG_OVR);
        
      /* Set ADC error code to overrun */
      SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_OVR);
    }
    else
    {
      /* Clear ADC Overrun flag only if Overrun is set to ADC_OVR_DATA_OVERWRITTEN
         otherwise, data register is potentially overwritten by new converted data as soon
         as OVR is cleared. */
      __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
    }
    break;
  }
  
  /* Return function status */
  return HAL_OK;
}

/**
  * @brief  Enable ADC, start conversion of regular group with interruption.
  * @note   Interruptions enabled in this function according to initialization
  *         setting : EOC (end of conversion), EOS (end of sequence), 
  *         OVR overrun.
  *         Each of these interruptions has its dedicated callback function.
  * @note   To guarantee a proper reset of all interruptions once all the needed
  *         conversions are obtained, HAL_ADC_Stop_IT() must be called to ensure 
  *         a correct stop of the IT-based conversions.
  * @note   By default, HAL_ADC_Start_IT() does not enable the End Of Sampling 
  *         interruption. If required (e.g. in case of oversampling with trigger
  *         mode), the user must:
  *          1. first clear the EOSMP flag if set with macro __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP)             
  *          2. then enable the EOSMP interrupt with macro __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOSMP)     
  *          before calling HAL_ADC_Start_IT().
  * @param hadc ADC handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_Start_IT(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Perform ADC enable and conversion start if no conversion is on going */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
  {
    /* Process locked */
    __HAL_LOCK(hadc);
    
    /* Enable the ADC peripheral */
    tmp_hal_status = ADC_Enable(hadc);
    
    /* Start conversion if ADC is effectively enabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state                                                        */
      /* - Clear state bitfield related to regular group conversion results   */
      /* - Set state bitfield related to regular operation                    */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
                        HAL_ADC_STATE_REG_BUSY);
      
      
      /* Set ADC error code */
      /* Reset all ADC error code fields */
      ADC_CLEAR_ERRORCODE(hadc);
      
      /* Clear ADC group regular conversion flag and overrun flag               */
      /* (To ensure of no unknown state from potential previous ADC operations) */
      __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
      
      /* Process unlocked */
      /* Unlock before starting ADC conversions: in case of potential         */
      /* interruption, to let the process to ADC IRQ Handler.                 */
      __HAL_UNLOCK(hadc);
      
      /* Disable all interruptions before enabling the desired ones */
      __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR));
      
      /* Enable ADC end of conversion interrupt */
      switch(hadc->Init.EOCSelection)
      {
        case ADC_EOC_SEQ_CONV:
          __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOS);
          break;
        /* case ADC_EOC_SINGLE_CONV */
        default:
          __HAL_ADC_ENABLE_IT(hadc, ADC_IT_EOC);
          break;
      }
      
      /* Enable ADC overrun interrupt */
      /* If hadc->Init.Overrun is set to ADC_OVR_DATA_PRESERVED, only then is
         ADC_IT_OVR enabled; otherwise data overwrite is considered as normal
         behavior and no CPU time is lost for a non-processed interruption */
      if (hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED)
      {
        __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR);  
      }
      
      /* Enable conversion of regular group.                                  */
      /* If software start has been selected, conversion starts immediately.  */
      /* If external trigger has been selected, conversion will start at next */
      /* trigger event.                                                       */
      /* Start ADC group regular conversion */
      LL_ADC_REG_StartConversion(hadc->Instance);
    }
    else
    {
      /* Process unlocked */
      __HAL_UNLOCK(hadc);
    }
    
  }
  else
  {
    tmp_hal_status = HAL_BUSY;
  }
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Stop ADC conversion of regular group (and injected group in 
  *         case of auto_injection mode), disable interrution of 
  *         end-of-conversion, disable ADC peripheral.
  * @param hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_ADC_Stop_IT(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Process locked */
  __HAL_LOCK(hadc);
  
  /* 1. Stop potential conversion on going, on ADC group regular */
  tmp_hal_status = ADC_ConversionStop(hadc);
  
  /* Disable ADC peripheral if conversions are effectively stopped */
  if (tmp_hal_status == HAL_OK)
  {
    /* Disable ADC end of conversion interrupt for regular group */
    /* Disable ADC overrun interrupt */
    __HAL_ADC_DISABLE_IT(hadc, (ADC_IT_EOC | ADC_IT_EOS | ADC_IT_OVR));
    
    /* 2. Disable the ADC peripheral */
    tmp_hal_status = ADC_Disable(hadc);
    
    /* Check if ADC is effectively disabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_REG_BUSY,
                        HAL_ADC_STATE_READY);
    }
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Enable ADC, start conversion of regular group and transfer result through DMA.
  * @note   Interruptions enabled in this function:
  *         overrun (if applicable), DMA half transfer, DMA transfer complete. 
  *         Each of these interruptions has its dedicated callback function.
  * @param hadc ADC handle
  * @param pData Destination Buffer address.
  * @param Length Number of data to be transferred from ADC peripheral to memory
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_ADC_Start_DMA(ADC_HandleTypeDef* hadc, uint32_t* pData, uint32_t Length)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Perform ADC enable and conversion start if no conversion is on going */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
  {
    /* Process locked */
    __HAL_LOCK(hadc);
    
    /* Specific case for first call occurrence of this function (DMA transfer */
    /* not activated and ADC disabled), DMA transfer must be activated        */
    /* with ADC disabled.                                                     */
    if ((hadc->Instance->CFGR1 & ADC_CFGR1_DMAEN) == 0UL)
    {
      if (LL_ADC_IsEnabled(hadc->Instance) != 0UL)
      {
        /* Disable ADC */
        LL_ADC_Disable(hadc->Instance);
      }
      
      /* Enable ADC DMA mode */
      hadc->Instance->CFGR1 |= ADC_CFGR1_DMAEN;
    }
    
    /* Enable the ADC peripheral */
    tmp_hal_status = ADC_Enable(hadc);
    
    /* Start conversion if ADC is effectively enabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state                                                        */
      /* - Clear state bitfield related to regular group conversion results   */
      /* - Set state bitfield related to regular operation                    */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_READY | HAL_ADC_STATE_REG_EOC | HAL_ADC_STATE_REG_OVR | HAL_ADC_STATE_REG_EOSMP,
                        HAL_ADC_STATE_REG_BUSY);
      
      /* Set ADC error code */
      /* Reset all ADC error code fields */
      ADC_CLEAR_ERRORCODE(hadc);
      
      /* Set the DMA transfer complete callback */
      hadc->DMA_Handle->XferCpltCallback = ADC_DMAConvCplt;
      
      /* Set the DMA half transfer complete callback */
      hadc->DMA_Handle->XferHalfCpltCallback = ADC_DMAHalfConvCplt;
      
      /* Set the DMA error callback */
      hadc->DMA_Handle->XferErrorCallback = ADC_DMAError;
      
      
      /* Manage ADC and DMA start: ADC overrun interruption, DMA start, ADC   */
      /* start (in case of SW start):                                         */
      
      /* Clear regular group conversion flag and overrun flag */
      /* (To ensure of no unknown state from potential previous ADC           */
      /* operations)                                                          */
      __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS | ADC_FLAG_OVR));
      
      /* Process unlocked */
      /* Unlock before starting ADC conversions: in case of potential         */
      /* interruption, to let the process to ADC IRQ Handler.                 */
      __HAL_UNLOCK(hadc);
      
      /* Enable ADC overrun interrupt */
      __HAL_ADC_ENABLE_IT(hadc, ADC_IT_OVR);
      
      /* Start the DMA channel */
      tmp_hal_status = HAL_DMA_Start_IT(hadc->DMA_Handle, (uint32_t)&hadc->Instance->DR, (uint32_t)pData, Length);
      
      /* Enable conversion of regular group.                                  */
      /* If software start has been selected, conversion starts immediately.  */
      /* If external trigger has been selected, conversion will start at next */
      /* trigger event.                                                       */
      /* Start ADC group regular conversion */
      LL_ADC_REG_StartConversion(hadc->Instance);
    }
  }
  else
  {
    tmp_hal_status = HAL_BUSY;
  }
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Stop ADC conversion of regular group (and injected group in 
  *         case of auto_injection mode), disable ADC DMA transfer, disable 
  *         ADC peripheral.
  * @param hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_ADC_Stop_DMA(ADC_HandleTypeDef* hadc)
{
  HAL_StatusTypeDef tmp_hal_status;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Process locked */
  __HAL_LOCK(hadc);
  
  /* 1. Stop potential ADC group regular conversion on going */
  tmp_hal_status = ADC_ConversionStop(hadc);
  
  /* Disable ADC peripheral if conversions are effectively stopped */
  if (tmp_hal_status == HAL_OK)
  {
    /* Disable the DMA channel (in case of DMA in circular mode or stop       */
    /* while DMA transfer is on going)                                        */
    if(hadc->DMA_Handle->State == HAL_DMA_STATE_BUSY)
    {
      tmp_hal_status = HAL_DMA_Abort(hadc->DMA_Handle);
      
      /* Check if DMA channel effectively disabled */
      if (tmp_hal_status != HAL_OK)
      {
        /* Update ADC state machine to error */
        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
      }
    }
    
    /* Disable ADC overrun interrupt */
    __HAL_ADC_DISABLE_IT(hadc, ADC_IT_OVR);
    
    /* 2. Disable the ADC peripheral */
    /* Update "tmp_hal_status" only if DMA channel disabling passed, to keep  */
    /* in memory a potential failing status.                                  */
    if (tmp_hal_status == HAL_OK)
    {
      tmp_hal_status = ADC_Disable(hadc);
    }
    else
    {
      (void)ADC_Disable(hadc);
    }
    
    /* Check if ADC is effectively disabled */
    if (tmp_hal_status == HAL_OK)
    {
      /* Set ADC state */
      ADC_STATE_CLR_SET(hadc->State,
                        HAL_ADC_STATE_REG_BUSY,
                        HAL_ADC_STATE_READY);
    }
    
    /* Disable ADC DMA (ADC DMA configuration of continuous requests is kept) */
    CLEAR_BIT(hadc->Instance->CFGR1, ADC_CFGR1_DMAEN);
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Get ADC regular group conversion result.
  * @note   Reading register DR automatically clears ADC flag EOC
  *         (ADC group regular end of unitary conversion).
  * @note   This function does not clear ADC flag EOS 
  *         (ADC group regular end of sequence conversion).
  *         Occurrence of flag EOS rising:
  *          - If sequencer is composed of 1 rank, flag EOS is equivalent
  *            to flag EOC.
  *          - If sequencer is composed of several ranks, during the scan
  *            sequence flag EOC only is raised, at the end of the scan sequence
  *            both flags EOC and EOS are raised.
  *         To clear this flag, either use function:
  *         in programming model IT: @ref HAL_ADC_IRQHandler(), in programming
  *         model polling: @ref HAL_ADC_PollForConversion()
  *         or @ref __HAL_ADC_CLEAR_FLAG(&hadc, ADC_FLAG_EOS).
  * @param hadc ADC handle
  * @retval ADC group regular conversion data
  */
uint32_t HAL_ADC_GetValue(ADC_HandleTypeDef* hadc)
{
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));

  /* Note: EOC flag is not cleared here by software because automatically     */
  /*       cleared by hardware when reading register DR.                      */
  
  /* Return ADC converted value */ 
  return hadc->Instance->DR;
}

/**
  * @brief  Handle ADC interrupt request.
  * @param hadc ADC handle
  * @retval None
  */
void HAL_ADC_IRQHandler(ADC_HandleTypeDef* hadc)
{
  uint32_t overrun_error = 0UL; /* flag set if overrun occurrence has to be considered as an error */
  uint32_t tmp_isr = hadc->Instance->ISR;
  uint32_t tmp_ier = hadc->Instance->IER;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  assert_param(IS_ADC_EOC_SELECTION(hadc->Init.EOCSelection));
  
  /* ========== Check End of Sampling flag for ADC group regular ========== */
  if(((tmp_isr & ADC_FLAG_EOSMP) == ADC_FLAG_EOSMP) && ((tmp_ier & ADC_IT_EOSMP) == ADC_IT_EOSMP))
  {
    /* Update state machine on end of sampling status if not in error state */
    if ((hadc->State & HAL_ADC_STATE_ERROR_INTERNAL) == 0UL)
    {
      /* Set ADC state */
      SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOSMP);
    }
    
    /* End Of Sampling callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->EndOfSamplingCallback(hadc);
#else
    HAL_ADCEx_EndOfSamplingCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Clear regular group conversion flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_EOSMP );
  }
  
  /* ====== Check ADC group regular end of unitary conversion sequence conversions ===== */
  if((((tmp_isr & ADC_FLAG_EOC) == ADC_FLAG_EOC) && ((tmp_ier & ADC_IT_EOC) == ADC_IT_EOC)) ||
     (((tmp_isr & ADC_FLAG_EOS) == ADC_FLAG_EOS) && ((tmp_ier & ADC_IT_EOS) == ADC_IT_EOS))  )
  {
    /* Update state machine on conversion status if not in error state */
    if ((hadc->State & HAL_ADC_STATE_ERROR_INTERNAL) == 0UL)
    {
      /* Set ADC state */
      SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
    }
    
    /* Determine whether any further conversion upcoming on group regular     */
    /* by external trigger, continuous mode or scan sequence on going         */
    /* to disable interruption.                                               */
    if(   (LL_ADC_REG_IsTriggerSourceSWStart(hadc->Instance) != 0UL)
       && (hadc->Init.ContinuousConvMode == DISABLE)
      )
    {
      /* If End of Sequence is reached, disable interrupts */
      if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
      {
        /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit           */
        /* ADSTART==0 (no conversion on going)                                */
        if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
        {
          /* Disable ADC end of single conversion interrupt on group regular */
          /* Note: Overrun interrupt was enabled with EOC interrupt in        */
          /* HAL_Start_IT(), but is not disabled here because can be used     */
          /* by overrun IRQ process below.                                    */
          __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
          
          /* Set ADC state */
          ADC_STATE_CLR_SET(hadc->State,
                            HAL_ADC_STATE_REG_BUSY,
                            HAL_ADC_STATE_READY);
        }
        else
        {
          /* Change ADC state to error state */
          SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
          
          /* Set ADC error code to ADC peripheral internal error */
          SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
        }
      }
    }
    
    /* Conversion complete callback */
    /* Note: Into callback function "HAL_ADC_ConvCpltCallback()",             */
    /*       to determine if conversion has been triggered from EOC or EOS,   */
    /*       possibility to use:                                              */
    /*        " if( __HAL_ADC_GET_FLAG(&hadc, ADC_FLAG_EOS)) "                */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->ConvCpltCallback(hadc);
#else
    HAL_ADC_ConvCpltCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Clear regular group conversion flag */
    /* Note: in case of overrun set to ADC_OVR_DATA_PRESERVED, end of         */
    /*       conversion flags clear induces the release of the preserved data.*/
    /*       Therefore, if the preserved data value is needed, it must be     */
    /*       read preliminarily into HAL_ADC_ConvCpltCallback().              */
    __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOC | ADC_FLAG_EOS) );
  }
  
  /* ========== Check Analog watchdog 1 flag ========== */
  if (((tmp_isr & ADC_FLAG_AWD1) == ADC_FLAG_AWD1) && ((tmp_ier & ADC_IT_AWD1) == ADC_IT_AWD1))      
  {
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD1);
    
    /* Level out of window 1 callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->LevelOutOfWindowCallback(hadc);
#else
    HAL_ADC_LevelOutOfWindowCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Clear ADC analog watchdog flag */ 
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD1);
  }
  
  /* ========== Check analog watchdog 2 flag ========== */
  if (((tmp_isr & ADC_FLAG_AWD2) == ADC_FLAG_AWD2) && ((tmp_ier & ADC_IT_AWD2) == ADC_IT_AWD2))      
  {
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD2);
    
    /* Level out of window 2 callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->LevelOutOfWindow2Callback(hadc);
#else
    HAL_ADCEx_LevelOutOfWindow2Callback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Clear ADC analog watchdog flag */ 
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD2);
  }
  
  /* ========== Check analog watchdog 3 flag ========== */
  if (((tmp_isr & ADC_FLAG_AWD3) == ADC_FLAG_AWD3) && ((tmp_ier & ADC_IT_AWD3) == ADC_IT_AWD3))      
  {
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_AWD3);
    
    /* Level out of window 3 callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->LevelOutOfWindow3Callback(hadc);
#else
    HAL_ADCEx_LevelOutOfWindow3Callback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    
    /* Clear ADC analog watchdog flag */ 
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_AWD3);
  }
  
  /* ========== Check Overrun flag ========== */
  if (((tmp_isr & ADC_FLAG_OVR) == ADC_FLAG_OVR) && ((tmp_ier & ADC_IT_OVR) == ADC_IT_OVR)) 
  {
    /* If overrun is set to overwrite previous data (default setting),        */
    /* overrun event is not considered as an error.                           */
    /* (cf ref manual "Managing conversions without using the DMA and without */
    /* overrun ")                                                             */
    /* Exception for usage with DMA overrun event always considered as an     */
    /* error.                                                                 */
    if (hadc->Init.Overrun == ADC_OVR_DATA_PRESERVED)
    {
      overrun_error = 1UL;
    }
    else
    {
      /* Check DMA configuration */
      if (LL_ADC_REG_GetDMATransfer(hadc->Instance) != LL_ADC_REG_DMA_TRANSFER_NONE)
      {
        overrun_error = 1UL;
      }
    }
        
    if (overrun_error == 1UL)
    {
      /* Change ADC state to error state */
      SET_BIT(hadc->State, HAL_ADC_STATE_REG_OVR);
      
      /* Set ADC error code to overrun */
      SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_OVR);
      
      /* Error callback */
      /* Note: In case of overrun, ADC conversion data is preserved until     */
      /*       flag OVR is reset.                                             */
      /*       Therefore, old ADC conversion data can be retrieved in         */
      /*       function "HAL_ADC_ErrorCallback()".                            */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
      hadc->ErrorCallback(hadc);
#else
      HAL_ADC_ErrorCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    }
    
    /* Clear ADC overrun flag */
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_OVR);
  }
  
  /* ========== Check channel configuration ready flag ========== */
  if (((tmp_isr & ADC_FLAG_CCRDY) == ADC_FLAG_CCRDY) && ((tmp_ier & ADC_IT_CCRDY) == ADC_IT_CCRDY))
  {
    /* Level out of window 1 callback */
    HAL_ADCEx_ChannelConfigReadyCallback(hadc);
    
    /* Clear ADC analog watchdog flag */ 
    __HAL_ADC_CLEAR_FLAG(hadc, ADC_FLAG_CCRDY);
  }
}

/**
  * @brief  Conversion complete callback in non-blocking mode.
  * @param hadc ADC handle
  * @retval None
  */
__weak void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_ConvCpltCallback must be implemented in the user file.
   */
}

/**
  * @brief  Conversion DMA half-transfer callback in non-blocking mode.
  * @param hadc ADC handle
  * @retval None
  */
__weak void HAL_ADC_ConvHalfCpltCallback(ADC_HandleTypeDef* hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_ConvHalfCpltCallback must be implemented in the user file.
  */
}

/**
  * @brief  Analog watchdog 1 callback in non-blocking mode.
  * @param hadc ADC handle
  * @retval None
  */
__weak void HAL_ADC_LevelOutOfWindowCallback(ADC_HandleTypeDef* hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_LevelOutOfWindowCallback must be implemented in the user file.
  */
}

/**
  * @brief  ADC error callback in non-blocking mode
  *         (ADC conversion with interruption or transfer by DMA).
  * @note   In case of error due to overrun when using ADC with DMA transfer 
  *         (HAL ADC handle parameter "ErrorCode" to state "HAL_ADC_ERROR_OVR"):
  *         - Reinitialize the DMA using function "HAL_ADC_Stop_DMA()".
  *         - If needed, restart a new ADC conversion using function
  *           "HAL_ADC_Start_DMA()"
  *           (this function is also clearing overrun flag)
  * @param hadc ADC handle
  * @retval None
  */
__weak void HAL_ADC_ErrorCallback(ADC_HandleTypeDef *hadc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hadc);

  /* NOTE : This function should not be modified. When the callback is needed,
            function HAL_ADC_ErrorCallback must be implemented in the user file.
  */
}

/**
  * @}
  */

/** @defgroup ADC_Exported_Functions_Group3 Peripheral Control functions
 *  @brief    Peripheral Control functions 
 *
@verbatim   
 ===============================================================================
             ##### Peripheral Control functions #####
 ===============================================================================  
    [..]  This section provides functions allowing to:
      (+) Configure channels on regular group
      (+) Configure the analog watchdog
      
@endverbatim
  * @{
  */

/**
  * @brief  Configure a channel to be assigned to ADC group regular.
  * @note   In case of usage of internal measurement channels:
  *         Vbat/VrefInt/TempSensor.
  *         These internal paths can be disabled using function 
  *         HAL_ADC_DeInit().
  * @note   Possibility to update parameters on the fly:
  *         This function initializes channel into ADC group regular,
  *         following calls to this function can be used to reconfigure
  *         some parameters of structure "ADC_ChannelConfTypeDef" on the fly,
  *         without resetting the ADC.
  *         The setting of these parameters is conditioned to ADC state:
  *         Refer to comments of structure "ADC_ChannelConfTypeDef".
  * @param hadc ADC handle
  * @param sConfig Structure of ADC channel assigned to ADC group regular.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_ConfigChannel(ADC_HandleTypeDef* hadc, ADC_ChannelConfTypeDef* sConfig)
{
  HAL_StatusTypeDef tmp_hal_status = HAL_OK;
  uint32_t tmp_config_internal_channel;
  __IO uint32_t wait_loop_index = 0UL;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  assert_param(IS_ADC_CHANNEL(sConfig->Channel));
  assert_param(IS_ADC_SAMPLING_TIME_COMMON(sConfig->SamplingTime));
  
  if((hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED)          ||
     (hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED_BACKWARD)   )
  {
    assert_param(IS_ADC_REGULAR_RANK_SEQ_FIXED(sConfig->Rank));
  }
  else
  {
    assert_param(IS_ADC_REGULAR_NB_CONV(hadc->Init.NbrOfConversion));
    
    assert_param(IS_ADC_REGULAR_RANK(sConfig->Rank));
  }
  
  /* Process locked */
  __HAL_LOCK(hadc);
  
  /* Parameters update conditioned to ADC state:                              */
  /* Parameters that can be updated when ADC is disabled or enabled without   */
  /* conversion on going on regular group:                                    */
  /*  - Channel number                                                        */
  /*  - Channel sampling time                                                 */
  /*  - Management of internal measurement channels: VrefInt/TempSensor/Vbat  */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
  {
    /* Configure channel: depending on rank setting, add it or remove it from */
    /* ADC sequencer.                                                         */
    /* If sequencer set to not fully configurable with channel rank set to    */
    /* none, remove the channel from the sequencer.                           */
    /* Otherwise (sequencer set to fully configurable or to to not fully      */
    /* configurable with channel rank to be set), configure the selected      */
    /* channel.                                                               */
    if(sConfig->Rank != ADC_RANK_NONE)
    {
      /* Regular sequence configuration */
      /* Note: ADC channel configuration requires few ADC clock cycles        */
      /*       to be ready. Processing of ADC settings in this function       */
      /*       induce that a specific wait time is not necessary.             */
      /*       For more details on ADC channel configuration ready,           */
      /*       refer to function "LL_ADC_IsActiveFlag_CCRDY()".               */
      if((hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED)         ||
         (hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED_BACKWARD)  )
      {
        /* Sequencer set to not fully configurable:                           */
        /* Set the channel by enabling the corresponding bitfield.            */
        LL_ADC_REG_SetSequencerChAdd(hadc->Instance, sConfig->Channel);
      }
      else
      {
        /* Sequencer set to fully configurable:                               */
        /* Set the channel by entering it into the selected rank.             */
        
        /* Memorize the channel set into variable in HAL ADC handle */
        MODIFY_REG(hadc->ADCGroupRegularSequencerRanks,
                   ADC_CHSELR_SQ1 << (sConfig->Rank & 0x1FUL),
                   __LL_ADC_CHANNEL_TO_DECIMAL_NB(sConfig->Channel) << (sConfig->Rank & 0x1FUL));
        
        /* If the selected rank is below ADC group regular sequencer length,  */
        /* apply the configuration in ADC register.                           */
        /* Note: Otherwise, configuration is not applied.                     */
        /*       To apply it, parameter'NbrOfConversion' must be increased.   */        
        if(((sConfig->Rank >> 2UL) + 1UL) <= hadc->Init.NbrOfConversion)
        {
          LL_ADC_REG_SetSequencerRanks(hadc->Instance, sConfig->Rank, sConfig->Channel);
        }
      }
      
      /* Set sampling time of the selected ADC channel */
      LL_ADC_SetChannelSamplingTime(hadc->Instance, sConfig->Channel, sConfig->SamplingTime);
      
      /* Management of internal measurement channels: VrefInt/TempSensor/Vbat */
      /* internal measurement paths enable: If internal channel selected,     */
      /* enable dedicated internal buffers and path.                          */
      /* Note: these internal measurement paths can be disabled using         */
      /*       HAL_ADC_DeInit() or removing the channel from sequencer with   */
      /*       channel configuration parameter "Rank".                        */
      if(__LL_ADC_IS_CHANNEL_INTERNAL(sConfig->Channel))
      {
        tmp_config_internal_channel = LL_ADC_GetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance));
        
        /* If the requested internal measurement path has already been enabled,   */
        /* bypass the configuration processing.                                   */
        if ((sConfig->Channel == ADC_CHANNEL_TEMPSENSOR) && ((tmp_config_internal_channel & LL_ADC_PATH_INTERNAL_TEMPSENSOR) == 0UL))
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), LL_ADC_PATH_INTERNAL_TEMPSENSOR | tmp_config_internal_channel);
          
          /* Delay for temperature sensor stabilization time */
          /* Wait loop initialization and execution */
          /* Note: Variable divided by 2 to compensate partially              */
          /*       CPU processing cycles, scaling in us split to not          */
          /*       exceed 32 bits register capacity and handle low frequency. */
          wait_loop_index = ((LL_ADC_DELAY_TEMPSENSOR_STAB_US / 10UL) * (SystemCoreClock / (100000UL * 2UL)));
          while(wait_loop_index != 0UL)
          {
            wait_loop_index--;
          }
        }
        else if ((sConfig->Channel == ADC_CHANNEL_VBAT) && ((tmp_config_internal_channel & LL_ADC_PATH_INTERNAL_VBAT) == 0UL))
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), LL_ADC_PATH_INTERNAL_VBAT | tmp_config_internal_channel);
        }
        else if ((sConfig->Channel == ADC_CHANNEL_VREFINT) && ((tmp_config_internal_channel & LL_ADC_PATH_INTERNAL_VREFINT) == 0UL))
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), LL_ADC_PATH_INTERNAL_VREFINT | tmp_config_internal_channel);
        }
        else
        {
          /* nothing to do */
        }
      }
    }
    else
    {
      /* Regular sequencer configuration */
      /* Note: Case of sequencer set to fully configurable:                   */
      /*       Sequencer rank cannot be disabled, only affected to            */
      /*       another channel.                                               */
      /*       To remove a rank, use parameter 'NbrOfConversion".             */
      if((hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED)         ||
         (hadc->Init.ScanConvMode == ADC_SCAN_SEQ_FIXED_BACKWARD)  )
      {
        /* Sequencer set to not fully configurable:                           */
        /* Reset the channel by disabling the corresponding bitfield.         */
        LL_ADC_REG_SetSequencerChRem(hadc->Instance, sConfig->Channel);
      }
      
      /* Management of internal measurement channels: Vbat/VrefInt/TempSensor.  */
      /* If internal channel selected, enable dedicated internal buffers and    */
      /* paths.                                                                 */
      if(__LL_ADC_IS_CHANNEL_INTERNAL(sConfig->Channel))
      {
        tmp_config_internal_channel = LL_ADC_GetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance));
        
        if (sConfig->Channel == ADC_CHANNEL_TEMPSENSOR)
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), ~LL_ADC_PATH_INTERNAL_TEMPSENSOR & tmp_config_internal_channel);
        }
        else if (sConfig->Channel == ADC_CHANNEL_VBAT)
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), ~LL_ADC_PATH_INTERNAL_VBAT & tmp_config_internal_channel);
        }
        else if (sConfig->Channel == ADC_CHANNEL_VREFINT)
        {
          LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(hadc->Instance), ~LL_ADC_PATH_INTERNAL_VREFINT & tmp_config_internal_channel);
        }
        else
        {
          /* nothing to do */
        }
      }
    }
  }
  
  /* If a conversion is on going on regular group, no update on regular       */
  /* channel could be done on neither of the channel configuration structure  */
  /* parameters.                                                              */
  else
  {
    /* Update ADC state machine to error */
    SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
    
    tmp_hal_status = HAL_ERROR;
  }
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}

/**
  * @brief  Configure the analog watchdog.
  * @note   Possibility to update parameters on the fly:
  *         This function initializes the selected analog watchdog, successive  
  *         calls to this function can be used to reconfigure some parameters 
  *         of structure "ADC_AnalogWDGConfTypeDef" on the fly, without resetting 
  *         the ADC.
  *         The setting of these parameters is conditioned to ADC state.
  *         For parameters constraints, see comments of structure 
  *         "ADC_AnalogWDGConfTypeDef".
  * @note   On this STM32 serie, analog watchdog thresholds can be modified
  *         while ADC conversion is on going.
  *         In this case, some constraints must be taken into account:
  *         the programmed threshold values are effective from the next
  *         ADC EOC (end of unitary conversion).
  *         Considering that registers write delay may happen due to
  *         bus activity, this might cause an uncertainty on the
  *         effective timing of the new programmed threshold values.
  * @param hadc ADC handle
  * @param AnalogWDGConfig Structure of ADC analog watchdog configuration
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_ADC_AnalogWDGConfig(ADC_HandleTypeDef* hadc, ADC_AnalogWDGConfTypeDef* AnalogWDGConfig)
{
  HAL_StatusTypeDef tmp_hal_status = HAL_OK;
  uint32_t tmpAWDHighThresholdShifted;
  uint32_t tmpAWDLowThresholdShifted;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  assert_param(IS_ADC_ANALOG_WATCHDOG_NUMBER(AnalogWDGConfig->WatchdogNumber));
  assert_param(IS_ADC_ANALOG_WATCHDOG_MODE(AnalogWDGConfig->WatchdogMode));
  assert_param(IS_FUNCTIONAL_STATE(AnalogWDGConfig->ITMode));
  
  if(AnalogWDGConfig->WatchdogMode == ADC_ANALOGWATCHDOG_SINGLE_REG)
  {
    assert_param(IS_ADC_CHANNEL(AnalogWDGConfig->Channel));
  }
  
  /* Verify thresholds range */
  if (hadc->Init.OversamplingMode == ENABLE)
  {
    /* Case of oversampling enabled: depending on ratio and shift configuration,
       analog watchdog thresholds can be higher than ADC resolution.
       Verify if thresholds are within maximum thresholds range. */
    assert_param(IS_ADC_RANGE(ADC_RESOLUTION_12B, AnalogWDGConfig->HighThreshold));
    assert_param(IS_ADC_RANGE(ADC_RESOLUTION_12B, AnalogWDGConfig->LowThreshold));
  }
  else
  {
    /* Verify if thresholds are within the selected ADC resolution */
    assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->HighThreshold));
    assert_param(IS_ADC_RANGE(ADC_GET_RESOLUTION(hadc), AnalogWDGConfig->LowThreshold));
  }
  
  /* Process locked */
  __HAL_LOCK(hadc);
  
  /* Parameters update conditioned to ADC state:                              */
  /* Parameters that can be updated when ADC is disabled or enabled without   */
  /* conversion on going on ADC group regular:                                */
  /*  - Analog watchdog channels                                              */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
  {
    /* Analog watchdog configuration */
    if(AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_1)
    {
      /* Configuration of analog watchdog:                                    */
      /*  - Set the analog watchdog enable mode: one or overall group of      */
      /*    channels.                                                         */
      switch(AnalogWDGConfig->WatchdogMode)
      {
        case ADC_ANALOGWATCHDOG_SINGLE_REG:
          LL_ADC_SetAnalogWDMonitChannels(hadc->Instance, LL_ADC_AWD1, __LL_ADC_ANALOGWD_CHANNEL_GROUP(AnalogWDGConfig->Channel, LL_ADC_GROUP_REGULAR));
          break;
        
        case ADC_ANALOGWATCHDOG_ALL_REG:
          LL_ADC_SetAnalogWDMonitChannels(hadc->Instance, LL_ADC_AWD1, LL_ADC_AWD_ALL_CHANNELS_REG);
          break;
        
        default: /* ADC_ANALOGWATCHDOG_NONE */
          LL_ADC_SetAnalogWDMonitChannels(hadc->Instance, LL_ADC_AWD1, LL_ADC_AWD_DISABLE);
          break;
      }
      
      /* Update state, clear previous result related to AWD1 */
      CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD1);
      
      /* Clear flag ADC analog watchdog */
      /* Note: Flag cleared Clear the ADC Analog watchdog flag to be ready  */
      /* to use for HAL_ADC_IRQHandler() or HAL_ADC_PollForEvent()          */
      /* (in case left enabled by previous ADC operations).                 */
      LL_ADC_ClearFlag_AWD1(hadc->Instance);
      
      /* Configure ADC analog watchdog interrupt */
      if(AnalogWDGConfig->ITMode == ENABLE)
      {
        LL_ADC_EnableIT_AWD1(hadc->Instance);
      }
      else
      {
        LL_ADC_DisableIT_AWD1(hadc->Instance);
      }
    }
    /* Case of ADC_ANALOGWATCHDOG_2 or ADC_ANALOGWATCHDOG_3 */
    else
    {
      switch(AnalogWDGConfig->WatchdogMode)
      {
        case ADC_ANALOGWATCHDOG_SINGLE_REG:
          /* Update AWD by bitfield to keep the possibility to monitor        */
          /* several channels by successive calls of this function.           */
          if (AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_2)
          {
            SET_BIT(hadc->Instance->AWD2CR, (1UL << __LL_ADC_CHANNEL_TO_DECIMAL_NB(AnalogWDGConfig->Channel)));
          }
          else
          {
            SET_BIT(hadc->Instance->AWD3CR, (1UL << __LL_ADC_CHANNEL_TO_DECIMAL_NB(AnalogWDGConfig->Channel)));
          }
          break;
          
        case ADC_ANALOGWATCHDOG_ALL_REG:
          LL_ADC_SetAnalogWDMonitChannels(hadc->Instance, AnalogWDGConfig->WatchdogNumber, LL_ADC_AWD_ALL_CHANNELS_REG);
          break;
          
        default: /* ADC_ANALOGWATCHDOG_NONE */
          LL_ADC_SetAnalogWDMonitChannels(hadc->Instance, AnalogWDGConfig->WatchdogNumber, LL_ADC_AWD_DISABLE);
          break;
      }
      
      if (AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_2)
      {
        /* Update state, clear previous result related to AWD2 */
        CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD2);
        
        /* Clear flag ADC analog watchdog */
        /* Note: Flag cleared Clear the ADC Analog watchdog flag to be ready  */
        /* to use for HAL_ADC_IRQHandler() or HAL_ADC_PollForEvent()          */
        /* (in case left enabled by previous ADC operations).                 */
        LL_ADC_ClearFlag_AWD2(hadc->Instance);
        
        /* Configure ADC analog watchdog interrupt */
        if(AnalogWDGConfig->ITMode == ENABLE)
        {
          LL_ADC_EnableIT_AWD2(hadc->Instance);
        }
        else
        {
          LL_ADC_DisableIT_AWD2(hadc->Instance);
        }
      }
      /* (AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_3) */
      else
      {
        /* Update state, clear previous result related to AWD3 */
        CLEAR_BIT(hadc->State, HAL_ADC_STATE_AWD3);
        
        /* Clear flag ADC analog watchdog */
        /* Note: Flag cleared Clear the ADC Analog watchdog flag to be ready  */
        /* to use for HAL_ADC_IRQHandler() or HAL_ADC_PollForEvent()          */
        /* (in case left enabled by previous ADC operations).                 */
        LL_ADC_ClearFlag_AWD3(hadc->Instance);
        
        /* Configure ADC analog watchdog interrupt */
        if(AnalogWDGConfig->ITMode == ENABLE)
        {
          LL_ADC_EnableIT_AWD3(hadc->Instance);
        }
        else
        {
          LL_ADC_DisableIT_AWD3(hadc->Instance);
        }
      }
    }
    
  }
    
  /* Analog watchdog thresholds configuration */
  if(AnalogWDGConfig->WatchdogNumber == ADC_ANALOGWATCHDOG_1)
  {
    /* Shift the offset with respect to the selected ADC resolution:        */
    /* Thresholds have to be left-aligned on bit 11, the LSB (right bits)   */
    /* are set to 0.                                                        */ 
    tmpAWDHighThresholdShifted = ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->HighThreshold);
    tmpAWDLowThresholdShifted  = ADC_AWD1THRESHOLD_SHIFT_RESOLUTION(hadc, AnalogWDGConfig->LowThreshold);
  }
  /* Case of ADC_ANALOGWATCHDOG_2 and ADC_ANALOGWATCHDOG_3 */
  else
  {
    /* No need to shift the offset with respect to the selected ADC resolution: */
    /* Thresholds have to be left-aligned on bit 11, the LSB (right bits)   */
    /* are set to 0.                                                        */
    tmpAWDHighThresholdShifted = AnalogWDGConfig->HighThreshold;
    tmpAWDLowThresholdShifted  = AnalogWDGConfig->LowThreshold;
  }
  
  /* Set ADC analog watchdog thresholds value of both thresholds high and low */
  LL_ADC_ConfigAnalogWDThresholds(hadc->Instance, AnalogWDGConfig->WatchdogNumber, tmpAWDHighThresholdShifted, tmpAWDLowThresholdShifted);
  
  /* Process unlocked */
  __HAL_UNLOCK(hadc);
  
  /* Return function status */
  return tmp_hal_status;
}


/**
  * @}
  */

/** @defgroup ADC_Exported_Functions_Group4 Peripheral State functions
 *  @brief    ADC Peripheral State functions
 *
@verbatim
 ===============================================================================
            ##### Peripheral state and errors functions #####
 ===============================================================================
    [..]
    This subsection provides functions to get in run-time the status of the  
    peripheral.
      (+) Check the ADC state
      (+) Check the ADC error code

@endverbatim
  * @{
  */

/**
  * @brief  Return the ADC handle state.
  * @note   ADC state machine is managed by bitfields, ADC status must be 
  *         compared with states bits.
  *         For example:                                                         
  *           " if ((HAL_ADC_GetState(hadc1) & HAL_ADC_STATE_REG_BUSY) != 0UL) "
  *           " if ((HAL_ADC_GetState(hadc1) & HAL_ADC_STATE_AWD1) != 0UL) "
  * @param hadc ADC handle
  * @retval ADC handle state (bitfield on 32 bits)
  */
uint32_t HAL_ADC_GetState(ADC_HandleTypeDef* hadc)
{
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Return ADC handle state */
  return hadc->State;
}

/**
  * @brief  Return the ADC error code.
  * @param hadc ADC handle
  * @retval ADC error code (bitfield on 32 bits)
  */
uint32_t HAL_ADC_GetError(ADC_HandleTypeDef *hadc)
{
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  return hadc->ErrorCode;
}

/**
  * @}
  */

/**
  * @}
  */

/** @defgroup ADC_Private_Functions ADC Private Functions
  * @{
  */

/**
  * @brief  Stop ADC conversion.
  * @note   Prerequisite condition to use this function: ADC conversions must be
  *         stopped to disable the ADC.
  * @param  hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef ADC_ConversionStop(ADC_HandleTypeDef* hadc)
{
  uint32_t tickstart;
  
  /* Check the parameters */
  assert_param(IS_ADC_ALL_INSTANCE(hadc->Instance));
  
  /* Verification if ADC is not already stopped on regular group to bypass    */
  /* this function if not needed.                                             */
  if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) != 0UL)
  {
    /* Stop potential conversion on going on regular group */
    /* Software is allowed to set ADSTP only when ADSTART=1 and ADDIS=0 */
    if (LL_ADC_IsDisableOngoing(hadc->Instance) == 0UL)
    {
      /* Stop ADC group regular conversion */
      LL_ADC_REG_StopConversion(hadc->Instance);
    }
    
    /* Wait for conversion effectively stopped */
    /* Get tick count */
    tickstart = HAL_GetTick();
    
    while((hadc->Instance->CR & ADC_CR_ADSTART) != 0UL)
    {
      if((HAL_GetTick() - tickstart) > ADC_STOP_CONVERSION_TIMEOUT)
      {
        /* Update ADC state machine to error */
        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
      
        /* Set ADC error code to ADC peripheral internal error */
        SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
        
        return HAL_ERROR;
      }
    }
    
  }
   
  /* Return HAL status */
  return HAL_OK;
}

/**
  * @brief  Enable the selected ADC.
  * @note   Prerequisite condition to use this function: ADC must be disabled
  *         and voltage regulator must be enabled (done into HAL_ADC_Init()).
  * @param hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef ADC_Enable(ADC_HandleTypeDef* hadc)
{
  uint32_t tickstart;
  
  /* ADC enable and wait for ADC ready (in case of ADC is disabled or         */
  /* enabling phase not yet completed: flag ADC ready not yet set).           */
  /* Timeout implemented to not be stuck if ADC cannot be enabled (possible   */
  /* causes: ADC clock not running, ...).                                     */
  if (LL_ADC_IsEnabled(hadc->Instance) == 0UL)
  {
    /* Check if conditions to enable the ADC are fulfilled */
    if ((hadc->Instance->CR & (ADC_CR_ADCAL | ADC_CR_ADSTP | ADC_CR_ADSTART | ADC_CR_ADDIS | ADC_CR_ADEN)) != 0UL)
    {
      /* Update ADC state machine to error */
      SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
      
      /* Set ADC error code to ADC peripheral internal error */
      SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
      
      return HAL_ERROR;
    }
    
    /* Enable the ADC peripheral */
    LL_ADC_Enable(hadc->Instance);
    
    /* If low power mode AutoPowerOff is enabled, power-on/off phases are     */
    /* performed automatically by hardware and flag ADC ready is not set.     */
    if (hadc->Init.LowPowerAutoPowerOff != ENABLE)
    {
      /* Wait for ADC effectively enabled */
      tickstart = HAL_GetTick();
      
      while(__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_RDY) == 0UL)
      {
        /*  If ADEN bit is set less than 4 ADC clock cycles after the ADCAL bit 
            has been cleared (after a calibration), ADEN bit is reset by the 
            calibration logic.
            The workaround is to continue setting ADEN until ADRDY is becomes 1.
            Additionally, ADC_ENABLE_TIMEOUT is defined to encompass this
            4 ADC clock cycle duration */
        /* Note: Test of ADC enabled required due to hardware constraint to     */
        /*       not enable ADC if already enabled.                             */
        if(LL_ADC_IsEnabled(hadc->Instance) == 0UL)
        {
          LL_ADC_Enable(hadc->Instance);
        }
        
        if((HAL_GetTick() - tickstart) > ADC_ENABLE_TIMEOUT)
        {
          /* Update ADC state machine to error */
          SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
          
          /* Set ADC error code to ADC peripheral internal error */
          SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
          
          return HAL_ERROR;
        }
      }
    }
  }
   
  /* Return HAL status */
  return HAL_OK;
}

/**
  * @brief  Disable the selected ADC.
  * @note   Prerequisite condition to use this function: ADC conversions must be
  *         stopped.
  * @param hadc ADC handle
  * @retval HAL status.
  */
HAL_StatusTypeDef ADC_Disable(ADC_HandleTypeDef* hadc)
{
  uint32_t tickstart;
  const uint32_t tmp_adc_is_disable_on_going = LL_ADC_IsDisableOngoing(hadc->Instance);
  
  /* Verification if ADC is not already disabled:                             */
  /* Note: forbidden to disable ADC (set bit ADC_CR_ADDIS) if ADC is already  */
  /*       disabled.                                                          */
  if (   (LL_ADC_IsEnabled(hadc->Instance) != 0UL)
      && (tmp_adc_is_disable_on_going == 0UL)
     )
  {
    /* Check if conditions to disable the ADC are fulfilled */
    if((hadc->Instance->CR & (ADC_CR_ADSTART | ADC_CR_ADEN)) == ADC_CR_ADEN)
    {
      /* Disable the ADC peripheral */
      LL_ADC_Disable(hadc->Instance);
      __HAL_ADC_CLEAR_FLAG(hadc, (ADC_FLAG_EOSMP | ADC_FLAG_RDY));
    }
    else
    {
      /* Update ADC state machine to error */
      SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
      
      /* Set ADC error code to ADC peripheral internal error */
      SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
      
      return HAL_ERROR;
    }
    
    /* Wait for ADC effectively disabled */
    /* Get tick count */
    tickstart = HAL_GetTick();
    
    while((hadc->Instance->CR & ADC_CR_ADEN) != 0UL)
    {
      if((HAL_GetTick() - tickstart) > ADC_DISABLE_TIMEOUT)
      {
        /* Update ADC state machine to error */
        SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_INTERNAL);
        
        /* Set ADC error code to ADC peripheral internal error */
        SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
        
        return HAL_ERROR;
      }
    }
  }
  
  /* Return HAL status */
  return HAL_OK;
}

/**
  * @brief  DMA transfer complete callback. 
  * @param hdma pointer to DMA handle.
  * @retval None
  */
static void ADC_DMAConvCplt(DMA_HandleTypeDef *hdma)
{
  /* Retrieve ADC handle corresponding to current DMA handle */
  ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Update state machine on conversion status if not in error state */
  if ((hadc->State & (HAL_ADC_STATE_ERROR_INTERNAL | HAL_ADC_STATE_ERROR_DMA)) == 0UL)
  {
    /* Set ADC state */
    SET_BIT(hadc->State, HAL_ADC_STATE_REG_EOC);
    
    /* Determine whether any further conversion upcoming on group regular     */
    /* by external trigger, continuous mode or scan sequence on going         */
    /* to disable interruption.                                               */
    if(   (LL_ADC_REG_IsTriggerSourceSWStart(hadc->Instance) != 0UL)
       && (hadc->Init.ContinuousConvMode == DISABLE)
      )
    {
      /* If End of Sequence is reached, disable interrupts */
      if( __HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOS) )
      {
        /* Allowed to modify bits ADC_IT_EOC/ADC_IT_EOS only if bit           */
        /* ADSTART==0 (no conversion on going)                                */
        if (LL_ADC_REG_IsConversionOngoing(hadc->Instance) == 0UL)
        {
          /* Disable ADC end of single conversion interrupt on group regular */
          /* Note: Overrun interrupt was enabled with EOC interrupt in        */
          /* HAL_Start_IT(), but is not disabled here because can be used     */
          /* by overrun IRQ process below.                                    */
          __HAL_ADC_DISABLE_IT(hadc, ADC_IT_EOC | ADC_IT_EOS);
          
          /* Set ADC state */
          ADC_STATE_CLR_SET(hadc->State,
                            HAL_ADC_STATE_REG_BUSY,
                            HAL_ADC_STATE_READY);
        }
        else
        {
          /* Change ADC state to error state */
          SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_CONFIG);
          
          /* Set ADC error code to ADC peripheral internal error */
          SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_INTERNAL);
        }
      }
    }
    
    /* Conversion complete callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
    hadc->ConvCpltCallback(hadc);
#else
    HAL_ADC_ConvCpltCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
  }
  else /* DMA and-or internal error occurred */
  {
    if ((hadc->State & HAL_ADC_STATE_ERROR_INTERNAL) != 0UL)
    {
      /* Call HAL ADC Error Callback function */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
      hadc->ErrorCallback(hadc);
#else
      HAL_ADC_ErrorCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
    }
    else
    {
      /* Call ADC DMA error callback */
      hadc->DMA_Handle->XferErrorCallback(hdma);
    }
  }
}

/**
  * @brief  DMA half transfer complete callback. 
  * @param hdma pointer to DMA handle.
  * @retval None
  */
static void ADC_DMAHalfConvCplt(DMA_HandleTypeDef *hdma)
{
  /* Retrieve ADC handle corresponding to current DMA handle */
  ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Half conversion callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
  hadc->ConvHalfCpltCallback(hadc);
#else
  HAL_ADC_ConvHalfCpltCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
}

/**
  * @brief  DMA error callback.
  * @param hdma pointer to DMA handle.
  * @retval None
  */
static void ADC_DMAError(DMA_HandleTypeDef *hdma)
{
  /* Retrieve ADC handle corresponding to current DMA handle */
  ADC_HandleTypeDef* hadc = ( ADC_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Set ADC state */
  SET_BIT(hadc->State, HAL_ADC_STATE_ERROR_DMA);
  
  /* Set ADC error code to DMA error */
  SET_BIT(hadc->ErrorCode, HAL_ADC_ERROR_DMA);
  
  /* Error callback */
#if (USE_HAL_ADC_REGISTER_CALLBACKS == 1)
  hadc->ErrorCallback(hadc);
#else
  HAL_ADC_ErrorCallback(hadc);
#endif /* USE_HAL_ADC_REGISTER_CALLBACKS */
}

/**
  * @}
  */

#endif /* HAL_ADC_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

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