text1.c

用数组做的八路单片机跑马灯试验

#include<reg52.h>
#define uchar unsigned char 
#define uint unsigned int 
void delay(uint);
void main(void)
{
uchar temp;
int i;
while(1)
{
temp=0xFF;
{P1=~temp;delay(1000);}
temp=0x00;
{P1=~temp;delay(200);}
temp=0x81;
{P1=~temp;delay(500);}
temp=0x42;
{P1=~temp;delay(500);}
temp=0x24;
{P1=~temp;delay(500);}
temp=0x18;
{P1=~temp;delay(500);}
temp=0x01;
for(i=0;i<8;i++)
{P1=~temp;delay(200);temp<<=1;}
temp=0x80;
for(i=0;i<8;i++)
{P1=~temp;delay(200);temp>>=1;}
temp=0xFE;
for(i=0;i<8;i++)
{P1=temp;delay(200);temp<<=1;}
temp=0x7F;
for(i=0;i<8;i++)
{P1=temp;delay(200);temp>>=1;}
temp=0x00;
{P1=~temp;delay(200);}
}
}
void delay(uint t)
{
register uint bt;
for(;t;t--)
for(bt=0;bt<255;bt++);
}