stm32PVD电源监测使用

正确操作步骤：

开时钟；配置电源检测；配置中断优先级

/*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);//电源管理部分时钟开启

EXTI_Configuration();

NVIC_Configuration();

PWR_PVDLevelConfig(PWR_PVDLevel_2V9);// 设定监控阀值

/*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连接到中断线16上

EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;//使用中断模式

EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising_Falling;//电压上升或下降越过设定阀值时都产生中断。

EXTI_InitStructure.EXTI_LineCmd=ENABLE;// 使能中断线

EXTI_Init(&EXTI_InitStructure);//初始

}

void NVIC_Configuration(void)

{

NVIC_InitTypeDef NVIC_InitStructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//中断优先级配置

//设置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);

}

注意：GPIO驱动LED模式为GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;还是推挽输出。

中断处理函数：

void PVD_IRQHandler(void)

{

if(EXTI_GetITStatus(EXTI_Line16) != RESET)

{

STM_EVAL_LEDToggle(LED1);

EXTI_ClearITPendingBit(EXTI_Line16);

}

}