text1.c

来自「这是我以前做过的51单片机实验代码」· C语言 代码 · 共 56 行

#include<reg51.h>

sbit P3_2=P3^2;
sbit P3_3=P3^3;
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
sbit P1_3=P1^3;
sbit P1_4=P1^4;
sbit P1_5=P1^5;


void Led_on();				//function to keep leds on
void Led_off();				//function to keep leds off
void Xint0(void);			//function to use extern interrupt0
void Xint1(void);			//function to use extern interrupt1

main()
{
EA=1;						//CPU的所有中断开
EX0=1;						//外部中断开0
EX1=1;						//外部中断1开
IT0=0;						 //INT0低电平触发
IT1=0;						 //INT1低电平触发
while(1){;}
}

void Xint0(void) interrupt 0
{
Led_on();
}

void Xint1(void) interrupt 2
{
Led_off();
}

void Led_on()
{
P1_0=1;
P1_1=1;
P1_2=1;
P1_3=1;
P1_4=1;
P1_5=1;
}

void Led_off()
{
P1_0=0;
P1_1=0;
P1_2=0;
P1_3=0;
P1_4=0;
P1_5=0;
}