ref: 01af5a89b3e1ac5c45472ef8ade9c15ffbd19925
dir: /demos/stm32f429_disco/stm/stm32f4_spl/inc/stm32f4xx_hal_wwdg.h/
/**
******************************************************************************
* @file stm32f4xx_hal_wwdg.h
* @author MCD Application Team
* @version V1.0.0
* @date 18-February-2014
* @brief Header file of WWDG HAL module.
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2014 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 ------------------------------------------------------------*/
/**
* @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
* @{
*/
/** @defgroup WWDG_BitAddress_AliasRegion
* @{
*/
/* --- CFR Register ---*/
/* Alias word address of EWI bit */
#define CFR_BASE (uint32_t)(WWDG_BASE + 0x04)
/**
* @}
*/
/** @defgroup WWDG_Interrupt_definition
* @{
*/
#define WWDG_IT_EWI ((uint32_t)WWDG_CFR_EWI)
#define IS_WWDG_IT(IT) ((IT) == WWDG_IT_EWI)
/**
* @}
*/
/** @defgroup WWDG_Flag_definition
* @brief WWDG Flag definition
* @{
*/
#define WWDG_FLAG_EWIF ((uint32_t)0x0001) /*!< Early wakeup interrupt flag */
#define IS_WWDG_FLAG(FLAG) ((FLAG) == WWDG_FLAG_EWIF))
/**
* @}
*/
/** @defgroup WWDG_Prescaler
* @{
*/
#define WWDG_PRESCALER_1 ((uint32_t)0x00000000) /*!< WWDG counter clock = (PCLK1/4096)/1 */
#define WWDG_PRESCALER_2 ((uint32_t)0x00000080) /*!< WWDG counter clock = (PCLK1/4096)/2 */
#define WWDG_PRESCALER_4 ((uint32_t)0x00000100) /*!< WWDG counter clock = (PCLK1/4096)/4 */
#define WWDG_PRESCALER_8 ((uint32_t)0x00000180) /*!< WWDG counter clock = (PCLK1/4096)/8 */
#define IS_WWDG_PRESCALER(PRESCALER) (((PRESCALER) == WWDG_PRESCALER_1) || \
((PRESCALER) == WWDG_PRESCALER_2) || \
((PRESCALER) == WWDG_PRESCALER_4) || \
((PRESCALER) == WWDG_PRESCALER_8))
/**
* @}
*/
/** @defgroup WWDG_Window
* @{
*/
#define IS_WWDG_WINDOW(WINDOW) ((WINDOW) <= 0x7F)
/**
* @}
*/
/** @defgroup WWDG_Counter
* @{
*/
#define IS_WWDG_COUNTER(COUNTER) (((COUNTER) >= 0x40) && ((COUNTER) <= 0x7F))
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/**
* @brief Enables the WWDG peripheral.
* @param __HANDLE__: WWDG handle
* @retval None
*/
#define __HAL_WWDG_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR |= WWDG_CR_WDGA)
/**
* @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 Enables the WWDG early wakeup interrupt.
* @note Once enabled this interrupt cannot be disabled except by a system reset.
* @retval None
*/
#define __HAL_WWDG_ENABLE_IT(__INTERRUPT__) (*(__IO uint32_t *) CFR_BASE |= (__INTERRUPT__))
/* Exported functions --------------------------------------------------------*/
/* 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);
/* 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);
/* Peripheral State functions **************************************************/
HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg);
/**
* @}
*/
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32F4xx_HAL_WWDG_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/