/**
  * @brief  Initializes the COMP peripheral according to the specified parameters
  *         in COMP_InitStruct
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @note   By default, PA1 is selected as COMP1 non inverting input.
  *         To use PA4 as COMP1 non inverting input call COMP_SwitchCmd() after COMP_Init()
  * @param  COMP_Selection: the selected comparator. 
  *          This parameter can be one of the following values:
  *            @arg COMP_Selection_COMP1: COMP1 selected
  *            @arg COMP_Selection_COMP2: COMP2 selected
  * @param  COMP_InitStruct: pointer to an COMP_InitTypeDef structure that contains 
  *         the configuration information for the specified COMP peripheral.
  * @retval None
  */
void COMP_Init(uint32_t COMP_Selection, COMP_InitTypeDef* COMP_InitStruct)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
  assert_param(IS_COMP_INVERTING_INPUT(COMP_InitStruct->COMP_InvertingInput));
  assert_param(IS_COMP_OUTPUT(COMP_InitStruct->COMP_Output));
  assert_param(IS_COMP_OUTPUT_POL(COMP_InitStruct->COMP_OutputPol));
  assert_param(IS_COMP_HYSTERESIS(COMP_InitStruct->COMP_Hysteresis));
  assert_param(IS_COMP_MODE(COMP_InitStruct->COMP_Mode));

  /*!< Get the COMP_CSR register value */
  tmpreg = COMP->CSR;

  /*!< Clear the COMP1SW1, COMPx_IN_SEL, COMPx_OUT_TIM_SEL, COMPx_POL, COMPx_HYST and COMPx_PWR_MODE bits */ 
  tmpreg &= (uint32_t) ~(COMP_CSR_CLEAR_MASK<<COMP_Selection);

  /*!< Configure COMP: inverting input, output redirection, hysteresis value and power mode */
  /*!< Set COMPxINSEL bits according to COMP_InitStruct->COMP_InvertingInput value */
  /*!< Set COMPxOUTSEL bits according to COMP_InitStruct->COMP_Output value */
  /*!< Set COMPxPOL bit according to COMP_InitStruct->COMP_OutputPol value */
  /*!< Set COMPxHYST bits according to COMP_InitStruct->COMP_Hysteresis value */
  /*!< Set COMPxMODE bits according to COMP_InitStruct->COMP_Mode value */   
  tmpreg |= (uint32_t)((COMP_InitStruct->COMP_InvertingInput | COMP_InitStruct->COMP_Output |
                       COMP_InitStruct->COMP_OutputPol | COMP_InitStruct->COMP_Hysteresis |
                       COMP_InitStruct->COMP_Mode)<<COMP_Selection);

  /*!< Write to COMP_CSR register */
  COMP->CSR = tmpreg;  
}
示例#2
0
/**
  * @brief  Initializes the COMP peripheral according to the specified parameters
  *         in COMP_InitStruct
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @note   By default, PA1 is selected as COMP1 non inverting input.
  *         To use PA4 as COMP1 non inverting input call COMP_SwitchCmd() after COMP_Init()
  * @param  COMP_Selection: the selected comparator. 
  *          This parameter can be COMP_Selection_COMPx where x can be 1 to 7
  *          to select the COMP peripheral.
  * @param  COMP_InitStruct: pointer to an COMP_InitTypeDef structure that contains 
  *         the configuration information for the specified COMP peripheral.
  *           - COMP_InvertingInput specifies the inverting input of COMP
  *           - COMP_NonInvertingInput specifies the non inverting input of COMP
  *           - COMP_Output connect COMP output to selected timer
  *             input (Input capture / Output Compare Reference Clear / Break Input)
  *           - COMP_BlankingSrce specifies the blanking source of COMP
  *           - COMP_OutputPol select output polarity
  *           - COMP_Hysteresis configures COMP hysteresis value
  *           - COMP_Mode configures COMP power mode
  * @note    COMP_Hysteresis must be configured only for STM32F303xC. Otherwise, COMP_Hysteresis
  *          must be kept at reset value(COMP_Hysteresis_No).
  * @note    COMP_Mode field is only applicable for STM32F303xC devices.
  * @retval None
  */
void COMP_Init(uint32_t COMP_Selection, COMP_InitTypeDef* COMP_InitStruct)
{
  uint32_t tmpreg = 0;

  /* Check the parameters */
  assert_param(IS_COMP_ALL_PERIPH(COMP_Selection));
  assert_param(IS_COMP_INVERTING_INPUT(COMP_InitStruct->COMP_InvertingInput));
  assert_param(IS_COMP_NONINVERTING_INPUT(COMP_InitStruct->COMP_NonInvertingInput));
  assert_param(IS_COMP_OUTPUT(COMP_InitStruct->COMP_Output));
  assert_param(IS_COMP_BLANKING_SOURCE(COMP_InitStruct->COMP_BlankingSrce));
  assert_param(IS_COMP_OUTPUT_POL(COMP_InitStruct->COMP_OutputPol));
  assert_param(IS_COMP_HYSTERESIS(COMP_InitStruct->COMP_Hysteresis));
  assert_param(IS_COMP_MODE(COMP_InitStruct->COMP_Mode));

  /*!< Get the COMPx_CSR register value */
  tmpreg = *(__IO uint32_t *) (COMP_BASE + COMP_Selection);

  /*!< Clear the COMP1SW1, COMPxINSEL, COMPxOUTSEL, COMPxPOL, COMPxHYST and COMPxMODE bits */
  tmpreg &= (uint32_t) (COMP_CSR_CLEAR_MASK);

  /*!< Configure COMP: inverting input, output redirection, hysteresis value and power mode */
  /*!< Set COMPxINSEL bits according to COMP_InitStruct->COMP_InvertingInput value */
  /*!< Set COMPxNONINSEL bits according to COMP_InitStruct->COMP_NonInvertingInput value */
  /*!< Set COMPxBLANKING bits according to COMP_InitStruct->COMP_BlankingSrce value */
  /*!< Set COMPxOUTSEL bits according to COMP_InitStruct->COMP_Output value */
  /*!< Set COMPxPOL bit according to COMP_InitStruct->COMP_OutputPol value */
  /*!< Set COMPxHYST bits according to COMP_InitStruct->COMP_Hysteresis value */
  /*!< Set COMPxMODE bits according to COMP_InitStruct->COMP_Mode value */
  tmpreg |= (uint32_t)(COMP_InitStruct->COMP_InvertingInput | COMP_InitStruct->COMP_NonInvertingInput |
                        COMP_InitStruct->COMP_Output | COMP_InitStruct->COMP_OutputPol | COMP_InitStruct->COMP_BlankingSrce |
                        COMP_InitStruct->COMP_Hysteresis | COMP_InitStruct->COMP_Mode);

  /*!< Write to COMPx_CSR register */
  *(__IO uint32_t *) (COMP_BASE + COMP_Selection) = tmpreg;
}
示例#3
0
/**
  * @brief  Initialize the COMP peripheral according to the specified
  *         parameters in the COMP_InitTypeDef and initialize the associated handle.
  * @note   If the selected comparator is locked, initialization cannot be performed.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp  COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{
  HAL_StatusTypeDef status = HAL_OK;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameters */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
    assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
    assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_NONINVERTINGINPUT_INSTANCE(hcomp->Instance, hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
    assert_param(IS_COMP_OUTPUT_INSTANCE(hcomp->Instance, hcomp->Init.Output));
    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
    assert_param(IS_COMP_MODE(hcomp->Init.Mode));
    assert_param(IS_COMP_BLANKINGSRCE(hcomp->Init.BlankingSrce)); 
    assert_param(IS_COMP_BLANKINGSRCE_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce)); 
    assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));

    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE)
    {
      assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
      assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
    }

    /* Init SYSCFG and the low level hardware to access comparators */
    __HAL_RCC_SYSCFG_CLK_ENABLE();
    /* Init the low level hardware : SYSCFG to access comparators */
    HAL_COMP_MspInit(hcomp);
    
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      /* Allocate lock resource and initialize it */
      hcomp->Lock = HAL_UNLOCKED;
    }

    /* Set COMP parameters */
    /*     Set COMPxINSEL bits according to hcomp->Init.InvertingInput value        */
    /*     Set COMPxNONINSEL bits according to hcomp->Init.NonInvertingInput value  */
    /*     Set COMPxBLANKING bits according to hcomp->Init.BlankingSrce value       */
    /*     Set COMPxOUTSEL bits according to hcomp->Init.Output value               */
    /*     Set COMPxPOL bit according to hcomp->Init.OutputPol value                */
    /*     Set COMPxHYST bits according to hcomp->Init.Hysteresis value             */
    /*     Set COMPxMODE bits according to hcomp->Init.Mode value                   */
    COMP_INIT(hcomp);

    /* Initialize the COMP state*/
    hcomp->State = HAL_COMP_STATE_READY;
  }
  
  return status;
}
示例#4
0
/**
  * @brief  Initialize the COMP according to the specified
  *         parameters in the COMP_InitTypeDef and initialize the associated handle.
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp  COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{
  uint32_t          tmpcsr = 0;
  HAL_StatusTypeDef status = HAL_OK;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameters */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
    assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
    assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
    assert_param(IS_COMP_MODE(hcomp->Init.Mode));
    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
    assert_param(IS_COMP_BLANKINGSRCE(hcomp->Init.BlankingSrce)); 
    assert_param(IS_COMP_BLANKINGSRCE_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce)); 
    assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));

    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLE)
    {
      assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
      assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
    }

    /* Init SYSCFG and the low level hardware to access comparators */
    __HAL_RCC_SYSCFG_CLK_ENABLE();
    /* Init the low level hardware : SYSCFG to access comparators */
    HAL_COMP_MspInit(hcomp);
    
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      /* Allocate lock resource and initialize it */
      hcomp->Lock = HAL_UNLOCKED;
    }

    /* Change COMP peripheral state */
    hcomp->State = HAL_COMP_STATE_BUSY;

    /* Set COMP parameters */
    /*     Set INMSEL bits according to hcomp->Init.InvertingInput value       */
    /*     Set INPSEL bits according to hcomp->Init.NonInvertingInput value    */
    /*     Set BLANKING bits according to hcomp->Init.BlankingSrce value       */
    /*     Set HYST bits according to hcomp->Init.Hysteresis value             */
    /*     Set POLARITY bit according to hcomp->Init.OutputPol value           */
    /*     Set POWERMODE bits according to hcomp->Init.Mode value              */
    /*     Set WINMODE bit according to hcomp->Init.WindowMode value           */
    tmpcsr = hcomp->Init.InvertingInput    |  \
             hcomp->Init.NonInvertingInput |  \
             hcomp->Init.BlankingSrce      |  \
             hcomp->Init.Hysteresis        |  \
             hcomp->Init.OutputPol         |  \
             hcomp->Init.Mode              |  \
             hcomp->Init.WindowMode;
    
    /* Check VREFINT use for NonInvertingInput */
    if(hcomp->Init.InvertingInput == COMP_INVERTINGINPUT_VREFINT)
    {
      /* Enable voltage scaler to output VREFINT */
      tmpcsr |= COMP_CSR_SCALEN;
    }
    else
    {
      if((hcomp->Init.InvertingInput == COMP_INVERTINGINPUT_1_4VREFINT) ||
         (hcomp->Init.InvertingInput == COMP_INVERTINGINPUT_1_2VREFINT) ||
         (hcomp->Init.InvertingInput == COMP_INVERTINGINPUT_3_4VREFINT))
      {
        /* Enable voltage & bandgap scaler to output VREFINT */
        tmpcsr |= (COMP_CSR_BRGEN | COMP_CSR_SCALEN);
      }
    }
    
    MODIFY_REG(hcomp->Instance->CSR, COMP_CSR_UPDATE_PARAMETERS_MASK, tmpcsr);

    /* Initialize the COMP state*/
    hcomp->State = HAL_COMP_STATE_READY;
  }
  
  return status;
}
示例#5
0
/**
  * @brief  Initializes the COMP according to the specified
  *         parameters in the COMP_InitTypeDef and create the associated handle.
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp: COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{ 
  HAL_StatusTypeDef status = HAL_OK;
  uint32_t regshift = COMP_CSR_COMP1_SHIFT;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || ((hcomp->State & COMP_STATE_BIT_LOCK) != RESET))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameter */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
    assert_param(IS_COMP_INVERTINGINPUT(hcomp->Init.InvertingInput));
    assert_param(IS_COMP_NONINVERTINGINPUT(hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_OUTPUT(hcomp->Init.Output));
    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
    assert_param(IS_COMP_MODE(hcomp->Init.Mode));
    
    if(hcomp->Init.NonInvertingInput == COMP_NONINVERTINGINPUT_DAC1SWITCHCLOSED)
    {
      assert_param(IS_COMP_DAC1SWITCH_INSTANCE(hcomp->Instance));
    }
  
    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLED)
    {
      assert_param(IS_COMP_WINDOWMODE_INSTANCE(hcomp->Instance));
    }
  
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      /* Init SYSCFG and the low level hardware to access comparators */
      __SYSCFG_CLK_ENABLE();

      HAL_COMP_MspInit(hcomp);
    }
  
    /* Set COMP parameters */
    /*     Set COMPxINSEL bits according to hcomp->Init.InvertingInput value        */
    /*     Set COMPxOUTSEL bits according to hcomp->Init.Output value               */
    /*     Set COMPxPOL bit according to hcomp->Init.OutputPol value                */
    /*     Set COMPxHYST bits according to hcomp->Init.Hysteresis value             */
    /*     Set COMPxMODE bits according to hcomp->Init.Mode value                   */
    if(hcomp->Instance == COMP2)
    {
      regshift = COMP_CSR_COMP2_SHIFT;
    }
    MODIFY_REG(COMP->CSR, 
               (uint32_t)(COMP_CSR_COMPxINSEL  | COMP_CSR_COMPxNONINSEL_MASK | \
                COMP_CSR_COMPxOUTSEL | COMP_CSR_COMPxPOL           | \
                COMP_CSR_COMPxHYST   | COMP_CSR_COMPxMODE) << regshift,
               (hcomp->Init.InvertingInput    | \
                hcomp->Init.NonInvertingInput | \
                hcomp->Init.Output            | \
                hcomp->Init.OutputPol         | \
                hcomp->Init.Hysteresis        | \
                hcomp->Init.Mode) << regshift);   
    
    if(hcomp->Init.WindowMode != COMP_WINDOWMODE_DISABLED)
    {
      COMP->CSR |= COMP_CSR_WNDWEN;
    }

    /* Initialize the COMP state*/
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      hcomp->State = HAL_COMP_STATE_READY;
    }
  }
  
  return status;
}
/**
  * @brief  Initialize the COMP according to the specified
  *         parameters in the COMP_InitTypeDef and initialize the associated handle.
  * @note   If the selected comparator is locked, initialization can't be performed.
  *         To unlock the configuration, perform a system reset.
  * @param  hcomp  COMP handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_COMP_Init(COMP_HandleTypeDef *hcomp)
{
  uint32_t tmp_csr = 0U;
  uint32_t exti_line = 0U;
  uint32_t comp_voltage_scaler_not_initialized = 0U;
  __IO uint32_t wait_loop_index = 0U;
  HAL_StatusTypeDef status = HAL_OK;
  
  /* Check the COMP handle allocation and lock status */
  if((hcomp == NULL) || (__HAL_COMP_IS_LOCKED(hcomp)))
  {
    status = HAL_ERROR;
  }
  else
  {
    /* Check the parameters */
    assert_param(IS_COMP_ALL_INSTANCE(hcomp->Instance));
    assert_param(IS_COMP_INPUT_PLUS(hcomp->Instance, hcomp->Init.NonInvertingInput));
    assert_param(IS_COMP_INPUT_MINUS(hcomp->Instance, hcomp->Init.InvertingInput));
    assert_param(IS_COMP_OUTPUTPOL(hcomp->Init.OutputPol));
    assert_param(IS_COMP_POWERMODE(hcomp->Init.Mode));
    assert_param(IS_COMP_HYSTERESIS(hcomp->Init.Hysteresis));
    assert_param(IS_COMP_BLANKINGSRC_INSTANCE(hcomp->Instance, hcomp->Init.BlankingSrce)); 
    assert_param(IS_COMP_TRIGGERMODE(hcomp->Init.TriggerMode));
    assert_param(IS_COMP_WINDOWMODE(hcomp->Init.WindowMode));
    
    if(hcomp->State == HAL_COMP_STATE_RESET)
    {
      /* Allocate lock resource and initialize it */
      hcomp->Lock = HAL_UNLOCKED;
      
      /* Init SYSCFG and the low level hardware to access comparators */
      /* Note: HAL_COMP_Init() calls __HAL_RCC_SYSCFG_CLK_ENABLE()            */
      /*       to enable internal control clock of the comparators.           */
      /*       However, this is a legacy strategy. In future STM32 families,  */
      /*       COMP clock enable must be implemented by user                  */
      /*       in "HAL_COMP_MspInit()".                                       */
      /*       Therefore, for compatibility anticipation, it is recommended   */
      /*       to implement __HAL_RCC_SYSCFG_CLK_ENABLE()                     */
      /*       in "HAL_COMP_MspInit()".                                       */
      __HAL_RCC_SYSCFG_CLK_ENABLE();
      
      /* Init the low level hardware */
      HAL_COMP_MspInit(hcomp);
    }
    
    /* Memorize voltage scaler state before initialization */
    comp_voltage_scaler_not_initialized = (READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) == 0);
    
    /* Set COMP parameters */
    tmp_csr = (  hcomp->Init.NonInvertingInput
               | hcomp->Init.InvertingInput
               | hcomp->Init.BlankingSrce
               | hcomp->Init.Hysteresis
               | hcomp->Init.OutputPol
               | hcomp->Init.Mode
              );
    
    /* Set parameters in COMP register */
    /* Note: Update all bits except read-only, lock and enable bits */
#if defined (COMP_CSR_INMESEL)
    MODIFY_REG(hcomp->Instance->CSR,
               COMP_CSR_PWRMODE  | COMP_CSR_INMSEL   | COMP_CSR_INPSEL  |
               COMP_CSR_WINMODE  | COMP_CSR_POLARITY | COMP_CSR_HYST    |
               COMP_CSR_BLANKING | COMP_CSR_BRGEN    | COMP_CSR_SCALEN  | COMP_CSR_INMESEL,
               tmp_csr
              );
#else
    MODIFY_REG(hcomp->Instance->CSR,
               COMP_CSR_PWRMODE  | COMP_CSR_INMSEL   | COMP_CSR_INPSEL  |
               COMP_CSR_WINMODE  | COMP_CSR_POLARITY | COMP_CSR_HYST    |
               COMP_CSR_BLANKING | COMP_CSR_BRGEN    | COMP_CSR_SCALEN,
               tmp_csr
              );
#endif
    
    /* Set window mode */
    /* Note: Window mode bit is located into 1 out of the 2 pairs of COMP     */
    /*       instances. Therefore, this function can update another COMP      */
    /*       instance that the one currently selected.                        */
    if(hcomp->Init.WindowMode == COMP_WINDOWMODE_COMP1_INPUT_PLUS_COMMON)
    {
      SET_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
    }
    else
    {
      CLEAR_BIT(COMP12_COMMON->CSR, COMP_CSR_WINMODE);
    }
    
    /* Delay for COMP scaler bridge voltage stabilization */
    /* Apply the delay if voltage scaler bridge is enabled for the first time */
    if ((READ_BIT(hcomp->Instance->CSR, COMP_CSR_SCALEN) != 0U) &&
        (comp_voltage_scaler_not_initialized != 0U)               )
    {
      /* Wait loop initialization and execution */
      /* Note: Variable divided by 2 to compensate partially                  */
      /*       CPU processing cycles.                                         */
      wait_loop_index = (COMP_DELAY_VOLTAGE_SCALER_STAB_US * (SystemCoreClock / (1000000 * 2U)));
      while(wait_loop_index != 0U)
      {
        wait_loop_index--;
      }
    }
    
    /* Get the EXTI line corresponding to the selected COMP instance */
    exti_line = COMP_GET_EXTI_LINE(hcomp->Instance);
    
    /* Manage EXTI settings */
    if((hcomp->Init.TriggerMode & (COMP_EXTI_IT | COMP_EXTI_EVENT)) != RESET)
    {
      /* Configure EXTI rising edge */
      if((hcomp->Init.TriggerMode & COMP_EXTI_RISING) != RESET)
      {
        LL_EXTI_EnableRisingTrig_0_31(exti_line);
      }
      else
      {
        LL_EXTI_DisableRisingTrig_0_31(exti_line);
      }
      
      /* Configure EXTI falling edge */
      if((hcomp->Init.TriggerMode & COMP_EXTI_FALLING) != RESET)
      {
        LL_EXTI_EnableFallingTrig_0_31(exti_line);
      }
      else
      {
        LL_EXTI_DisableFallingTrig_0_31(exti_line);
      }
      
      /* Clear COMP EXTI pending bit (if any) */
      LL_EXTI_ClearFlag_0_31(exti_line);
      
      /* Configure EXTI event mode */
      if((hcomp->Init.TriggerMode & COMP_EXTI_EVENT) != RESET)
      {
        LL_EXTI_EnableEvent_0_31(exti_line);
      }
      else
      {
        LL_EXTI_DisableEvent_0_31(exti_line);
      }
      
      /* Configure EXTI interrupt mode */
      if((hcomp->Init.TriggerMode & COMP_EXTI_IT) != RESET)
      {
        LL_EXTI_EnableIT_0_31(exti_line);
      }
      else
      {
        LL_EXTI_DisableIT_0_31(exti_line);
      }
    }
    else
    {
      /* Disable EXTI event mode */
      LL_EXTI_DisableEvent_0_31(exti_line);
      
      /* Disable EXTI interrupt mode */
      LL_EXTI_DisableIT_0_31(exti_line);
    }
    
    /* Set HAL COMP handle state */
    /* Note: Transition from state reset to state ready,                      */
    /*       otherwise (coming from state ready or busy) no state update.     */
    if (hcomp->State == HAL_COMP_STATE_RESET)
    {
      hcomp->State = HAL_COMP_STATE_READY;
    }
  }
  
  return status;
}