rt-thread/bsp/stm32f429-armfly/Libraries/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_wwdg.h

/**
  ******************************************************************************
  * @file    stm32f4xx_hal_wwdg.h
  * @author  MCD Application Team
  * @version V1.6.0
  * @date    04-November-2016
  * @brief   Header file of WWDG HAL module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 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 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                 ((uint32_t)0x00000000U)  /*!< 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 */
/**
  * @}
  */

/** @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  Enables the WWDG peripheral.
  * @param  __HANDLE__: WWDG handle
  * @retval None
  */
#define __HAL_WWDG_ENABLE(__HANDLE__) SET_BIT((__HANDLE__)->Instance->CR, WWDG_CR_WDGA)

/**
  * @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  Checks 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'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  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  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);
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 /* __STM32F4xx_HAL_WWDG_H */

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