8155.c

8155做的电子时钟

#include <REGX51.H>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int
#define PA XBYTE[0x0101]
#define PB XBYTE[0x0102]
#define PC XBYTE[0x0103]
#define CTRL XBYTE[0x0100]
void delay(int MS);
code uchar cod[]={0x3f,0x06,0x5b,0x4f,0x66,0x6D,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
code uchar set[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f} ;

void main()
{
	uchar i;
	CTRL=0x0d;
    
 		   	     
 while(1)
	{
//	for(i=0;i<=3;i++)
		{
		{
	    PA=cod[1+i];
		PC=set[0];
		delay(50); 
		}
			
		{
	    PA=cod[5+i];
    	PC=set[1];
		delay(50);
		}

		{
		PA=cod[0+i];
		PC=set[2];
		delay(50);
		}

		{
		PA=cod[8+i];
	    PC=set[3];
		delay(50);
		}	
				   	  	
		}		
	}
}

void delay(int MS) 
{
       uchar us,usn;
      while(MS!=0)
          { usn = 2;
          while(usn!=0)
           {
             us=0x0f;
             while (us!=0){us--;};
             usn--;
           }
       MS--;
       }
}