#include<stm32f10x.h>
void init1()
{
GPIO_InitTypeDef GPIO_InitStructure;//
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);//
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_2MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
}
/*************************************/
void init2()
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB,&GPIO_InitStructure);
}
/***********************************/
void delay(unsigned int i)
{
unsigned int k,m;
for(k=0;k<50;k++)
{
for(m=0;m<i;m++);
}
}
/*******************************/
void userGPIO_EXTI()//
{
EXTI_InitTypeDef EXTI_InitStructure; //
EXTI_InitStructure.EXTI_Line=EXTI_Line0; //
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;//
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising;//
EXTI_InitStructure.EXTI_LineCmd=ENABLE; //
EXTI_Init(&EXTI_InitStructure);
}
/****************************/
void userGPIO_NVIC()
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/***************************************/
void EXTI0_IRQHandler()
{
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
EXTI_ClearITPendingBit(EXTI_Line0);
GPIO_SetBits(GPIOC,GPIO_Pin_13);
delay(50000);
GPIO_ResetBits(GPIOC,GPIO_Pin_13);
}
}
/**************************/
void main()
{
SystemInit();
init1();
init2();
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource0);
userGPIO_EXTI();
userGPIO_NVIC();
while(1);}