正確操作步驟：

開(kāi)時(shí)鐘；配置電源檢測(cè)；配置中斷優(yōu)先級(jí)

/*Includes------------------------------------------------------------------*/

#include"stm32f10x.h"

#include"stm32_eval.h"

void EXTI_Configuration(void);

void NVIC_Configuration(void);

intmain(void)

{

STM_EVAL_LEDInit(LED1);

GPIO_SetBits(GPIOC,GPIO_Pin_7);

/*Enable PWRandBKP clock*/

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR|RCC_APB1Periph_BKP,ENABLE);//電源管理部分時(shí)鐘開(kāi)啟

EXTI_Configuration();

NVIC_Configuration();

PWR_PVDLevelConfig(PWR_PVDLevel_2V9);// 設(shè)定監(jiān)控閥值

/*Enable the PVD Output*/

PWR_PVDCmd(ENABLE);// 使能PVD

while(1)

{

}

}

void EXTI_Configuration(void)

{

EXTI_InitTypeDef EXTI_InitStructure;

EXTI_ClearITPendingBit(EXTI_Line16);

EXTI_InitStructure.EXTI_Line=EXTI_Line16;// PVD連接到中斷線16上

EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;//使用中斷模式

EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;//電壓上升或下降越過(guò)設(shè)定閥值時(shí)都產(chǎn)生中斷。

EXTI_InitStructure.EXTI_LineCmd=ENABLE;// 使能中斷線

EXTI_Init(&EXTI_InitStructure);//初始

}

void NVIC_Configuration(void)

{

NVIC_InitTypeDef NVIC_InitStructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//中斷優(yōu)先級(jí)配置

//設(shè)置PVD中斷

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);

}

注意：GPIO驅(qū)動(dòng)LED模式為GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;還是推挽輸出。

中斷處理函數(shù)：

void PVD_IRQHandler(void)

{

if(EXTI_GetITStatus(EXTI_Line16) != RESET)

{

STM_EVAL_LEDToggle(LED1);

EXTI_ClearITPendingBit(EXTI_Line16);

}

}