text: /**
    ******************************************************************************
    * @file    stm32l4xx_hal_wwdg.h
    * @author  MCD Application Team
    * @brief   Header file of WWDG HAL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32L4xx_HAL_WWDG_H
  #define __STM32L4xx_HAL_WWDG_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "../../../drivers/STM32L4xx_HAL_Driver/Inc/stm32l4xx_hal_def.h"
  
  /** @addtogroup STM32L4xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup WWDG
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  
  /** @defgroup WWDG_Exported_Types WWDG Exported Types
    * @{
    */
  
  /** 
    * @brief  WWDG Init structure definition
    */
  typedef struct
  {
    uint32_t Prescaler;     /*!< Specifies the prescaler value of the WWDG.
                                 This parameter can be a value of @ref WWDG_Prescaler */
  
    uint32_t Window;        /*!< Specifies the WWDG window value to be compared to the downcounter.
                                 This parameter must be a number Min_Data = 0x40 and Max_Data = 0x7F */
  
    uint32_t Counter;       /*!< Specifies the WWDG free-running downcounter  value.
                                 This parameter must be a number between Min_Data = 0x40 and Max_Data = 0x7F */
  
    uint32_t EWIMode ;      /*!< Specifies if WWDG Early Wakeup Interupt is enable or not.
                                 This parameter can be a value of @ref WWDG_EWI_Mode */
  
  }WWDG_InitTypeDef;
  
  /**
    * @brief  WWDG handle Structure definition
    */
  typedef struct
  {
    WWDG_TypeDef                 *Instance;  /*!< Register base address    */
  
    WWDG_InitTypeDef             Init;       /*!< WWDG required parameters */
  
  }WWDG_HandleTypeDef;
  /**
    * @}
    */
  
  /* Exported constants --------------------------------------------------------*/
  
  /** @defgroup WWDG_Exported_Constants WWDG Exported Constants
    * @{
    */
  
  /** @defgroup WWDG_Interrupt_definition WWDG Interrupt definition
    * @{
    */
  #define WWDG_IT_EWI                         WWDG_CFR_EWI  /*!< Early wakeup interrupt */
  /**
    * @}
    */
  
  /** @defgroup WWDG_Flag_definition WWDG Flag definition
    * @brief WWDG Flag definition
    * @{
    */
  #define WWDG_FLAG_EWIF                      WWDG_SR_EWIF  /*!< Early wakeup interrupt flag */
  /**
    * @}
    */
  
  /** @defgroup WWDG_Prescaler WWDG Prescaler
    * @{
    */
  #define WWDG_PRESCALER_1                    0x00000000u       /*!< WWDG counter clock = (PCLK1/4096)/1 */
  #define WWDG_PRESCALER_2                    WWDG_CFR_WDGTB_0  /*!< WWDG counter clock = (PCLK1/4096)/2 */
  #define WWDG_PRESCALER_4                    WWDG_CFR_WDGTB_1  /*!< WWDG counter clock = (PCLK1/4096)/4 */
  #define WWDG_PRESCALER_8                    WWDG_CFR_WDGTB    /*!< WWDG counter clock = (PCLK1/4096)/8 */
  /**
    * @}
    */
  
  /** @defgroup WWDG_EWI_Mode WWDG Early Wakeup Interrupt Mode
    * @{
    */
  #define WWDG_EWI_DISABLE                    0x00000000u       /*!< EWI Disable */
  #define WWDG_EWI_ENABLE                     WWDG_CFR_EWI      /*!< EWI Enable */
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Private macros ------------------------------------------------------------*/
  
  /** @defgroup WWDG_Private_Macros WWDG Private Macros
    * @{
    */
  #define IS_WWDG_PRESCALER(__PRESCALER__)    (((__PRESCALER__) == WWDG_PRESCALER_1) || \
                                               ((__PRESCALER__) == WWDG_PRESCALER_2) || \
                                               ((__PRESCALER__) == WWDG_PRESCALER_4) || \
                                               ((__PRESCALER__) == WWDG_PRESCALER_8))
  
  #define IS_WWDG_WINDOW(__WINDOW__)          (((__WINDOW__) >= WWDG_CFR_W_6) && ((__WINDOW__) <= WWDG_CFR_W))
  
  #define IS_WWDG_COUNTER(__COUNTER__)        (((__COUNTER__) >= WWDG_CR_T_6) && ((__COUNTER__) <= WWDG_CR_T))
  
  #define IS_WWDG_EWI_MODE(__MODE__)          (((__MODE__) == WWDG_EWI_ENABLE) || \
                                               ((__MODE__) == WWDG_EWI_DISABLE))
  /**
    * @}
    */
  
  
  /* Exported macros ------------------------------------------------------------*/
  
  /** @defgroup WWDG_Exported_Macros WWDG Exported Macros
    * @{
    */
  
  /**
    * @brief  Enable the WWDG peripheral.
    * @param  __HANDLE__  WWDG handle
    * @retval None
    */
  #define __HAL_WWDG_ENABLE(__HANDLE__)                         SET_BIT((__HANDLE__)->Instance->CR, WWDG_CR_WDGA)
  
  /**
    * @brief  Enable the WWDG early wakeup interrupt.
    * @param  __HANDLE__: WWDG handle
    * @param  __INTERRUPT__  specifies the interrupt to enable.
    *         This parameter can be one of the following values:
    *            @arg WWDG_IT_EWI: Early wakeup interrupt
    * @note   Once enabled this interrupt cannot be disabled except by a system reset.
    * @retval None
    */
  #define __HAL_WWDG_ENABLE_IT(__HANDLE__, __INTERRUPT__)       SET_BIT((__HANDLE__)->Instance->CFR, (__INTERRUPT__))
  
  /**
    * @brief  Check whether the selected WWDG interrupt has occurred or not.
    * @param  __HANDLE__  WWDG handle
    * @param  __INTERRUPT__  specifies the it to check.
    *        This parameter can be one of the following values:
    *            @arg WWDG_FLAG_EWIF: Early wakeup interrupt IT
    * @retval The new state of WWDG_FLAG (SET or RESET).
    */
  #define __HAL_WWDG_GET_IT(__HANDLE__, __INTERRUPT__)        __HAL_WWDG_GET_FLAG((__HANDLE__),(__INTERRUPT__))
  
  /** @brief  Clear the WWDG interrupt pending bits.
    *         bits to clear the selected interrupt pending bits.
    * @param  __HANDLE__  WWDG handle
    * @param  __INTERRUPT__  specifies the interrupt pending bit to clear.
    *         This parameter can be one of the following values:
    *            @arg WWDG_FLAG_EWIF: Early wakeup interrupt flag
    */
  #define __HAL_WWDG_CLEAR_IT(__HANDLE__, __INTERRUPT__)      __HAL_WWDG_CLEAR_FLAG((__HANDLE__), (__INTERRUPT__))
  
  /**
    * @brief  Check whether the specified WWDG flag is set or not.
    * @param  __HANDLE__  WWDG handle
    * @param  __FLAG__  specifies the flag to check.
    *         This parameter can be one of the following values:
    *            @arg WWDG_FLAG_EWIF: Early wakeup interrupt flag
    * @retval The new state of WWDG_FLAG (SET or RESET).
    */
  #define __HAL_WWDG_GET_FLAG(__HANDLE__, __FLAG__)           (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))
  
  /**
    * @brief  Clear the WWDG's pending flags.
    * @param  __HANDLE__  WWDG handle
    * @param  __FLAG__  specifies the flag to clear.
    *         This parameter can be one of the following values:
    *            @arg WWDG_FLAG_EWIF: Early wakeup interrupt flag
    * @retval None
    */
  #define __HAL_WWDG_CLEAR_FLAG(__HANDLE__, __FLAG__)         ((__HANDLE__)->Instance->SR = ~(__FLAG__))
  
  /** @brief  Check whether the specified WWDG interrupt source is enabled or not.
    * @param  __HANDLE__  WWDG Handle.
    * @param  __INTERRUPT__  specifies the WWDG interrupt source to check.
    *         This parameter can be one of the following values:
    *            @arg WWDG_IT_EWI: Early Wakeup Interrupt
    * @retval state of __INTERRUPT__ (TRUE or FALSE).
    */
  #define __HAL_WWDG_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) (((__HANDLE__)->Instance->CFR & (__INTERRUPT__)) == (__INTERRUPT__))
  
  /**
    * @}
    */
  
  /* Exported functions --------------------------------------------------------*/
  
  /** @addtogroup WWDG_Exported_Functions
    * @{
    */
  
  /** @addtogroup WWDG_Exported_Functions_Group1
    * @{
    */
  /* Initialization/de-initialization functions  **********************************/
  HAL_StatusTypeDef     HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg);
  void                  HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg);
  /**
    * @}
    */
  
  /** @addtogroup WWDG_Exported_Functions_Group2
    * @{
    */
  /* I/O operation functions ******************************************************/
  HAL_StatusTypeDef     HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg);
  void                  HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg);
  void                  HAL_WWDG_EarlyWakeupCallback(WWDG_HandleTypeDef* hwwdg);
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __STM32L4xx_HAL_WWDG_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  