stm32_template/system_Template/Pvd.c

/* include ---------------------------------------------------------*/
#include <main.h>


/* private define -------------------------------------------------*/


/* private variables ----------------------------------------------*/


/* private function prototypes ------------------------------------*/
static void Init(void);


/* public variables -----------------------------------------------*/
Pvd_t Pvd = 
{
	Init
};

/**
	* @brief  PVD初始化
	* @param  None
	* @retval None
	* @note   None
*/
static void Init(void)
{
	NVIC_InitTypeDef NVIC_InitStructure;
	EXTI_InitTypeDef EXTI_InitStructure;

	/*使能 PWR 时钟 */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

	/* 使能 PVD 中断 */
	NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);

	/* 配置 EXTI16线(PVD 输出) 来产生上升下降沿中断*/
	EXTI_ClearITPendingBit(EXTI_Line16);
	EXTI_InitStructure.EXTI_Line = EXTI_Line16;
	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
	EXTI_InitStructure.EXTI_LineCmd = ENABLE;
	EXTI_Init(&EXTI_InitStructure);

	/* 配置PVD级别PWR_PVDLevel_2V6 (PVD检测电压的阈值为2.6V，VDD电压低于2.6V时产生PVD中断) */
	/*具体级别根据自己的实际应用要求配置*/
	PWR_PVDLevelConfig(PWR_PVDLevel_2V6);

	/* 使能PVD输出 */
	PWR_PVDCmd(ENABLE);
}

/**
	* @brief  PVD中断
	* @param  None
	* @retval None
	* @note   None
*/
void PVD_IRQHandler(void)
{
	/*检测是否产生了PVD警告信号*/
	if(PWR_GetFlagStatus (PWR_FLAG_PVDO)==SET)			
	{


	}
	/* 清除中断信号*/
	EXTI_ClearITPendingBit(EXTI_Line16);

}