单片机实验期末考试-使用两个外部中断控制8只LED显示的电路

在51单片机的某一IO口上接8只LED，在外部中断0输入P3.2(INT0)引脚接一只按钮开关K1，在外部中断1输入P3,.3(INT1)引脚接一只按钮开关K2。要求K1和K2未按下时，8只LED呈流水灯逐一动态显示【方向自定义】，当K1按下时，8只LED奇数偶数位交替闪烁，按下K2时，8只LED以特定时间间隔动态的显示你的学号，多个学号以特定花型。

#include "SST89x5x4.h"
#include "Intrins.h"
unsigned int arr1[8] = {0x03, 0x01 , 0x04, 0x01, 0x04, 0x00, 0x04, 0x02};
unsigned int arr2[8] = {0x03, 0x01 , 0x04, 0x01, 0x04, 0x00, 0x05, 0x08};
void delay()
{
	unsigned int x;
	for(x = 0; x < 0xFFFF; x++);
}
void int0_isr() interrupt 0
{
	unsigned char j;
	for(j = 0; j < 4; j++)
	{
		P1 = 0xAA;
		delay();
		P1 = ~P1;
		delay();
	}
}
void int2_isr() interrupt 2
{
	unsigned char j;
	for(j = 0; j < 8; j++)
	{
		P1 = arr1[j];
		delay();
		delay();
		delay();
	}
	P1 = 0xFF;
	delay();
	delay();
	delay();
	for(j = 0; j < 8; j++)
	{
		P1 = arr2[j];
		delay();
		delay();
		delay();
	}
}
void LSD()
{
	int i;
	P1 = 0x01;
	delay();
	for(i = 0; i < 7; i++)
	{
		P1 = _crol_(P1, 1);
		delay();
	}
}
void main()
{
	P1 = 0x00;
	IT0 = 1;
	EX0 = 1;
	IT1 = 1;
	EX1 = 1;
	EA = 1;
	while(1)
	{
		LSD();
	}
}