light1.c

这是用51单片机开发的流水灯程序

#include<reg52.h>
#define uint unsigned int 
#define uchar unsigned char
void delay(uint z);
void light1();
uchar temp;
uint num;
void main()
{ 
temp=0xfe;//11111110
P2=temp;
for(num=0;num<14;num++)	
   {
        temp=temp<<1;
        delay(500);
        P2=temp;
		delay(500);
    if(temp==0x00)
	{
	  temp=0xfe;
	  P2=temp;
	 }
  
   }
if(num==14)
 {while(1)
 light1();

 }
 }
void delay(uint z)
{
  uint x,y;
  for(x=z;x>0;x--)
     for(y=110;y>0;y--);
}
void light1()
{
   P2=0xff;
   delay(500);
   P2=0xe7;//11100111
   delay(500);
   P2=0xc3;//11000011
   delay(500);
   P2=0x81;//10000001
   delay(500);
   P2=0x00;
   delay(500);
}