单片机外部中断的电平触发和边沿触发程序

//电平触发
#include
#include
#define uint unsigned int
#define uchar unsigned char
sbit D1=P2^0;
uchar num;
uchar wnum=0x00;
uchar code dbit[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//段选，选择要显示的数字
//uchar code wnum[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F};//八位数码管
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
{
for(y=0;y<113;y++)
{
}
}
}
void main()
{
P1=wnum;
EA=1;//打开中断总开关
EX0=1;//打开外部中断0，P3.2选通
IT0=0;//选择电平触发方式
while(1)
{
for(num=0;num<10;num++)
{
P0=dbit[num];
delay(500);
}
}
}
void duan() interrupt 0
{
D1=1;
delay(500);
D1=0;
delay(500);
}

//边沿触发方式
#include
#include
#define uint unsigned int
#define uchar unsigned char
sbit D1=P2^0;
uchar num;
uchar wnum=0x00;
uchar code dbit[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//段选，选择要显示的数字
//uchar code wnum[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F};//八位数码管
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
{
for(y=0;y<113;y++)
{
}
}
}
void main()
{
P1=wnum;
EA=1;//打开中断总开关
EX0=1;//打开外部中断0，P3.2选通
IT0=1;//选择边沿触发方式
while(1)
{
for(num=0;num<10;num++)
{
P0=dbit[num];
delay(500);
}
}
}
void duan() interrupt 0
{
D1=1;
delay(500);
D1=0;
delay(500);
}