huangjian8563main.c

本文件包含了使用C语言编写单片机的各种入门程序

#include<reg52.h>
#include<intrins.h>

#define uchar unsigned char

code uchar led[]={0x11,0xd7,0x32,0x92,0xd4,0x18,0x98,0xd3,0x10,0x90,0xfe,0xff};

uchar d[]={0,0x20,0,0,0,0,0};

uchar *p=d;


sbit sda_8563=P0^7;
sbit scl_8563=P0^6;
sbit sda_164=P0^2;
sbit scl_164=P0^3;



delay(uchar i)

{
   while(--i);

 }


void start()
{


  sda_8563=1;
  scl_8563=1;
  delay(2);
  sda_8563=0;
  delay(2);
  scl_8563=0;
  }



    void stop()
 { sda_8563=0;
   scl_8563=1;
   delay(2);
   sda_8563=1;
  }



 void wrbyte(uchar dat)


 { 
 
   int i;
   scl_8563=0;
   for(i=0;i<8;i++)
   { if(dat&0x80)sda_8563=1; else sda_8563=0;
     scl_8563=1;
	 delay(2);
	 scl_8563=0;
	 dat<<=1;
	 }
	 sda_8563=1;
	 scl_8563=1;
	 scl_8563=0;
  }

uchar rebyte()
  { int i;
    uchar a=0;
    sda_8563=1;
	for(i=0;i<8;i++)
	{ scl_8563=1;
	  a<<=1;
	  a|=sda_8563;
	  scl_8563=0;
	  delay(2);
	  }
	  sda_8563=1;
	  scl_8563=1;
	  scl_8563=0;
	  return(a);
   }

 void refrom8563()
 { int i;
   for(i=0;i<3;i++)
   { start();
     wrbyte(0xa2);
     wrbyte(0xa2+i);
	 start();
	 wrbyte(0xa3);
	 switch(i)
	{ case 0:*(p+i)=(rebyte())&0x7f;break;
	  case 1:*(p+i)=(rebyte())&0x7f;break;
	  case 2:*(p+i)=(rebyte())&0x3f;break;
	  default:break;
	  }
	  stop();
	  }
	  }

  void wrto8563()
  {int i;
   wrbyte(0xa2);
   wrbyte(0xa2+i);
   wrbyte(d[i]);
   stop();
   }

  shift(uchar t)
  { int i,dat;
    dat=d[t];
	scl_164=0;
	for(i=0;i<8;i++)
	{ if(dat&0x80)sda_164=1;else sda_164=0;
	  scl_164=1;
	  scl_164=0;
	  dat<<=1;
	  }
	  }

   void display()
   { int i;
     for(i=0;i<3;i++)
	 {
	  shift(0xff);
	  shift(*(p+i)&0x0f);
	  shift((*(p+i)&0xf0)>>4 );
	  }
	  }

   /*   main()
   {
     wrto8563();

	 while(1)
	 { int y;

	  refrom8563();

	  display();

	  for(y=0;y<200;y++);

	  delay(0xff);
	  }

	  }
	  */
  
   main()
   {

    wrto8563();
    while(1)
   {
    int y;
    refrom8563();

     display();
    for(y=0;y<1000;y++)
	delay(200);
   }

   }