led.c

来自「单片机开发板源程序 适合初学者 第五部分 报警产生器」· C语言 代码 · 共 38 行

#include <AT89X51.H>
unsigned char code table[]={0xfe,0xfd,0xfb,0xf7,
                            0xef,0xdf,0xbf,0x7f,
                            0xfe,0xfd,0xfb,0xf7,
                            0xef,0xdf,0xbf,0x7f,
                            0x7f,0xbf,0xdf,0xef,
                            0xf7,0xfb,0xfd,0xfe,
                            0x7f,0xbf,0xdf,0xef,
                            0xf7,0xfb,0xfd,0xfe,
                            0x00,0xff,0x00,0xff,
                            0x01};
unsigned char i;

void delay(void)
{
  unsigned char m,n,s;
  for(m=20;m>0;m--)
  for(n=20;n>0;n--)
  for(s=248;s>0;s--);
}

void main(void)
{
  while(1)
    {
      if(table[i]!=0x01)
        {
          P0=table[i];
          i++;
          delay();
        }
        else
          {
            i=0;
          }
    }
}