00. 目录
01. WWDG概述
stm32f4xx_wwdg.h和 stm32f4xx_wwdg.c文件中。
02. 相关类型
WWDG_Prescaler
/** @defgroup WWDG_Prescaler
* @{
*/
#define WWDG_Prescaler_1 ((uint32_t)0x00000000)
#define WWDG_Prescaler_2 ((uint32_t)0x00000080)
#define WWDG_Prescaler_4 ((uint32_t)0x00000100)
#define WWDG_Prescaler_8 ((uint32_t)0x00000180)
#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_VALUE(VALUE) ((VALUE) <= 0x7F)
#define IS_WWDG_COUNTER(COUNTER) (((COUNTER) >= 0x40) && ((COUNTER) <= 0x7F))
中断处理函数
WWDG_IRQn = 0, /*!< Window WatchDog Interrupt*/
03. 相关函数
/* Function used to set the WWDG configuration to the default reset state ****/
void WWDG_DeInit(void);
/* Prescaler, Refresh window and Counter configuration functions **************/
void WWDG_SetPrescaler(uint32_t WWDG_Prescaler);
void WWDG_SetWindowValue(uint8_t WindowValue);
void WWDG_EnableIT(void);
void WWDG_SetCounter(uint8_t Counter);
/* WWDG activation function ***************************************************/
void WWDG_Enable(uint8_t Counter);
/* Interrupts and flags management functions **********************************/
FlagStatus WWDG_GetFlagStatus(void);
void WWDG_ClearFlag(void);
04. 结构体封装
/**
* @brief Window WATCHDOG
*/
typedef struct
{
__IO uint32_t CR; /*!< WWDG Control register, Address offset: 0x00 */
__IO uint32_t CFR; /*!< WWDG Configuration register, Address offset: 0x04 */
__IO uint32_t SR; /*!< WWDG Status register, Address offset: 0x08 */
} WWDG_TypeDef;
05. 附录
5.1 【STM32】STM32系列教程汇总