/**
    ******************************************************************************
    * @file    stm32f4xx_hal_wwdg.h
    * @author  MCD Application Team
    * @version V1.4.1
    * @date    09-October-2015
    * @brief   Header file of WWDG HAL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2015 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 __STM32F4xx_HAL_WWDG_H
  #define __STM32F4xx_HAL_WWDG_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f4xx_hal_def.h"
  
  /** @addtogroup STM32F4xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup WWDG
    * @{
    */ 
  
  /* Exported types ------------------------------------------------------------*/
  /** @defgroup WWDG_Exported_Types WWDG Exported Types
    * @{
    */
     
  /**
    * @brief  WWDG HAL State Structure definition
    */
  typedef enum
  {
    HAL_WWDG_STATE_RESET     = 0x00,  /*!< WWDG not yet initialized or disabled */
    HAL_WWDG_STATE_READY     = 0x01,  /*!< WWDG initialized and ready for use   */
    HAL_WWDG_STATE_BUSY      = 0x02,  /*!< WWDG internal process is ongoing     */
    HAL_WWDG_STATE_TIMEOUT   = 0x03,  /*!< WWDG timeout state                   */
    HAL_WWDG_STATE_ERROR     = 0x04   /*!< WWDG error state                     */
  }HAL_WWDG_StateTypeDef;
  
  /** 
    * @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 lower than Max_Data = 0x80 */ 
    
    uint32_t Counter;    /*!< Specifies the WWDG free-running downcounter value.
                              This parameter must be a number between Min_Data = 0x40 and Max_Data = 0x7F */
  
  }WWDG_InitTypeDef;
  
  /** 
    * @brief  WWDG handle Structure definition  
    */ 
  typedef struct
  {
    WWDG_TypeDef                 *Instance;  /*!< Register base address    */
    
    WWDG_InitTypeDef             Init;       /*!< WWDG required parameters */
    
    HAL_LockTypeDef              Lock;       /*!< WWDG locking object      */
    
    __IO HAL_WWDG_StateTypeDef   State;      /*!< WWDG communication state */
    
  }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                 ((uint32_t)0x00000000)  /*!< WWDG counter clock = (PCLK1/4096)/1 */
  #define WWDG_PRESCALER_2                  WWDG_CFR_WDGTB0  /*!< WWDG counter clock = (PCLK1/4096)/2 */
  #define WWDG_PRESCALER_4                  WWDG_CFR_WDGTB1  /*!< WWDG counter clock = (PCLK1/4096)/4 */
  #define WWDG_PRESCALER_8                  WWDG_CFR_WDGTB  /*!< WWDG counter clock = (PCLK1/4096)/8 */
  /**
    * @}
    */ 
  
  /**
    * @}
    */ 
  
  /* Exported macro ------------------------------------------------------------*/
  /** @defgroup WWDG_Exported_Macros WWDG Exported Macros
    * @{
    */
  
  /** @brief Reset WWDG handle state
    * @param  __HANDLE__: WWDG handle
    * @retval None
    */
  #define __HAL_WWDG_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_WWDG_STATE_RESET)
  
  /**
    * @brief  Enables the WWDG peripheral.
    * @param  __HANDLE__: WWDG handle
    * @retval None
    */
  #define __HAL_WWDG_ENABLE(__HANDLE__) SET_BIT((__HANDLE__)->Instance->CR, WWDG_CR_WDGA)
  
  /**
    * @brief  Disables the WWDG peripheral.
    * @param  __HANDLE__: WWDG handle
    * @note   WARNING: This is a dummy macro for HAL code alignment.
    *         Once enable, WWDG Peripheral cannot be disabled except by a system reset.
    * @retval None
    */
  #define __HAL_WWDG_DISABLE(__HANDLE__)                      /* dummy  macro */
  
  /**
    * @brief  Gets the selected WWDG's it status.
    * @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's 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  Enables 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  Disables the WWDG early wakeup interrupt.
    * @param  __HANDLE__: WWDG handle
    * @param  __INTERRUPT__: specifies the interrupt to disable.
    *         This parameter can be one of the following values:
    *            @arg WWDG_IT_EWI: Early wakeup interrupt
    * @note   WARNING: This is a dummy macro for HAL code alignment. 
    *         Once enabled this interrupt cannot be disabled except by a system reset.
    * @retval None
    */
  #define __HAL_WWDG_DISABLE_IT(__HANDLE__, __INTERRUPT__)                   /* dummy  macro */
      
  /**
    * @brief  Gets the selected WWDG's flag status.
    * @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  Clears 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  Checks if the specified WWDG interrupt source is enabled or disabled.
    * @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);
  HAL_StatusTypeDef HAL_WWDG_DeInit(WWDG_HandleTypeDef *hwwdg);
  void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg);
  void HAL_WWDG_MspDeInit(WWDG_HandleTypeDef *hwwdg);
  void HAL_WWDG_WakeupCallback(WWDG_HandleTypeDef* hwwdg);
  /**
    * @}
    */
  
  /** @addtogroup WWDG_Exported_Functions_Group2
    * @{
    */
  /* I/O operation functions ******************************************************/
  HAL_StatusTypeDef HAL_WWDG_Start(WWDG_HandleTypeDef *hwwdg);
  HAL_StatusTypeDef HAL_WWDG_Start_IT(WWDG_HandleTypeDef *hwwdg);
  HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter);
  void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg);
  /**
    * @}
    */
  
  /** @addtogroup WWDG_Exported_Functions_Group3
    * @{
    */
  /* Peripheral State functions  **************************************************/
  HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg);
  /**
    * @}
    */ 
  
  /**
    * @}
    */
  
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /** @defgroup WWDG_Private_Constants WWDG Private Constants
    * @{
    */
  /** @defgroup WWDG_BitAddress_AliasRegion WWDG BitAddress
    * @brief WWDG registers bit address in the alias region
    * @{
    */
  
  /* --- CFR Register ---*/
  /* Alias word address of EWI bit */
  #define WWDG_CFR_BASE   (uint32_t)(WWDG_BASE + 0x04)
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* 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__) <= 0x7F)
  #define IS_WWDG_COUNTER(__COUNTER__) (((__COUNTER__) >= 0x40) && ((__COUNTER__) <= 0x7F))
  /**
    * @}
    */
  
  /* Private functions ---------------------------------------------------------*/
  /** @defgroup WWDG_Private_Functions WWDG Private Functions
    * @{
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */ 
  
  /**
    * @}
    */
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __STM32F4xx_HAL_WWDG_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/