8870测试程序.c

采用DS12C887做时钟

 #include <AT89X52.H>
   #include <INTRINS.h> 
 /*unsigned char code Tab[]={0xff,0Xfd,0xff,0xfe,0xff,0xf7,0xff,0xfb,0xff,0xdf,0xff,0xef,0xff,0x7f,0xff,0xbf,
                           0Xfd,0xff,0xfe,0xff,0xf7,0xff,0xfb,0xff,0xdf,0xff,0xef,0xff,0x7f,0xff,0xbf,0xff};
 unsigned char code codedisplay[]={
 0xFF,0xFF,0xFF,0xE7,0xDB,0xBD,0xBD,0xBD,0xBD,0xBD,0xBD,0xBD,0xDB,0xE7,0xFF,0xFF,/*"0",0*/

//0xFF,0xFF,0xFF,0xEF,0x8F,0xEF,0xEF,0xEF,0xEF,0xEF,0xEF,0xEF,0xEF,0x83,0xFF,0xFF,/*"1",1*/

//0xFF,0xFF,0xFF,0xC3,0xBD,0xBD,0xBD,0xFB,0xFB,0xF7,0xEF,0xDF,0xBD,0x81,0xFF,0xFF,/*"2",2*/

//0xFF,0xFF,0xFF,0xC3,0xBD,0xBD,0xFB,0xE7,0xFB,0xFD,0xFD,0xBD,0xBB,0xC7,0xFF,0xFF,/*"3",3*/

//0xFF,0xFF,0xFF,0xFB,0xF3,0xEB,0xDB,0xDB,0xBB,0xBB,0x81,0xFB,0xFB,0xE1,0xFF,0xFF,/*"4",4*/

//0xFF,0xFF,0xFF,0x81,0xBF,0xBF,0xBF,0xA7,0x9B,0xFD,0xFD,0xBD,0xBB,0xC7,0xFF,0xFF,/*"5",5*/

//0xFF,0xFF,0xFF,0xE3,0xDB,0xBF,0xBF,0xA7,0x9B,0xBD,0xBD,0xBD,0xDB,0xE7,0xFF,0xFF,/*"6",6*/

//0xFF,0xFF,0xFF,0x81,0xBB,0xBB,0xF7,0xF7,0xEF,0xEF,0xEF,0xEF,0xEF,0xEF,0xFF,0xFF,/*"7",7*/

//0xFF,0xFF,0xFF,0xC3,0xBD,0xBD,0xBD,0xDB,0xE7,0xDB,0xBD,0xBD,0xBD,0xC3,0xFF,0xFF,/*"8",8*/

//0xFF,0xFF,0xFF,0xE7,0xDB,0xBD,0xBD,0xBD,0xD9,0xE5,0xFD,0xFD,0xDB,0xC7,0xFF,0xFF};/*"9",9*/
  unsigned char  display_buff[8];
  unsigned char  m,n=5;
//void int1(void) interrupt 2
 //   { n=P2; n=n&0x0f; } 
 void delay(void)
{  unsigned char 	i,j;
   for(i=0;i<15;i++){	for(j=0;j<50;j++) ;	}
} 

void main(void)
  {	SCON=0; 	P1=0; SP=0x70; EA=1;EX1=1;IT1=1;
	
   while(1)	   
    {         	
				  for(m=0;m<16;m++)
				   {  
				       SBUF=0;    while(!TI) ; TI=0;
		               SBUF=0;    while(!TI) ; TI=0; 
			           SBUF=0;    while(!TI) ; TI=0; 
			           SBUF=0;    while(!TI) ; TI=0;
					   SBUF=0;     while(!TI) ; TI=0; 
					   SBUF=0;     while(!TI) ; TI=0; 
			           SBUF=0;     while(!TI) ; TI=0;
					   SBUF=0;     while(!TI) ; TI=0;
					   SBUF=0; while(!TI) ; TI=0;
					   SBUF=0;while(!TI) ; TI=0; 
				   	   
					   P3_4=0;P3_4=1;	P3_4=0;
	                   delay();
	                  }
	   }
	   }