led.c

来自「这是用51单片机开发的流水灯程序」· C语言 代码 · 共 81 行

#include<reg52.h>
#include<intrins.h>
#define unit unsigned int
#define uchar unsigned char
void delay(unit);
uchar num,num1,num2,temp;
void main()
{
    num=0;
    num1=0;
    num2=0;
    temp=0xfe;
    while(num!=12)
    {
    P2=temp;
    temp=_crol_(temp,2);
    delay(500);
    num++;
    }
    while(num1!=3)
    {
     num=24;
   while(num!=31)
   {
   P2=temp;
   temp=_crol_(temp,1);
   delay(500);
   num++;
   }
   while(num!=38)
   {
   P2=temp;
   temp=_cror_(temp,1);
   delay(500);
   num++;
   }
  num1++;
  }
  while(num1!=6)
  {
  P2=0x7e;
  delay(500);
  P2=0xbd;
  delay(500);
  P2=0xdb;
  delay(500);
  P2=0xe7;
  delay(500);
  num1++;
  }
  while(num1!=9)
  {
  P2=0xe7;
  delay(500);
  P2=0xdb;
  delay(500);
  P2=0xbd;
  delay(500);
  P2=0x7e;
  delay(500);
  num1++;
  }
  while(num1!=12)
  {
  P2=0x00;
  delay(2000);
  P2=0xff;
  delay(200);
  num1++;
  }
  while(1)
  {
  P2=0xff;
  }
}
void delay(unit z)
{
   unit x,y;
   for(x=z;x>0;x--)
     for(y=110;y>0;y--);
}