jiafa.c

可以进行简单的时钟模拟

#include<reg52.h>
//#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit wela=P2^6;
sbit dula=P2^7;
void display(uint q,uint b,uint s,uint g);
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//uchar code tablewe[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
uchar aa;
void init();
uint temp,q,b,s,g;
void delay(uint z)
{
	int x,y;
	for(x=z;x>0;x--)
	for(y=110;y>0;y--);
}
void main()
{
    init();
	temp=0;
	q=temp/1000;
	b=temp%1000/100;
	s=temp%1000%100/10;
	g=temp%10;
	while(1)	  

	{
		if(aa==20)
		{
			aa=0;
			temp++;
			
			if(temp==9999)
			{
				temp=0;
			}
			q=temp/1000;
		    b=temp%1000/100;
		    s=temp%1000%100/10;
		    g=temp%10;
		}
		display(q,b,s,g);			
	     
	}	
	 
}
void display(uint q,uint b,uint s,uint g)
{		 
          P0=0xff;
		  wela=1;
		  P0=0xfe;
		  wela=0;

		  P0=0xff;
		  dula=1;
		  P0=table[q];
		  dula=0;
		  delay(10);
		  //delay(1);
		  
		  		 
		  P0=0xff;
	      wela=1;
		  P0=0xfd;
		  wela=0;

		  P0=0xff;
		  dula=1;
		  P0=table[b];
		  dula=0;
		  delay(10);
		  
		  //delay(1);

		  
		  P0=0xff;
		  wela=1;
		  P0=0xfb;
		  wela=0;

		  P0=0xff;
		  dula=1;
		  P0=table[s];
		  dula=0;
		  delay(10);
		  //delay(1);

		 
		 		  
		  P0=0xff;
		  wela=1;
		  P0=0xf7;
		  wela=0;

		  P0=0xff;
		  dula=1;
		  P0=table[g];
		  dula=0;
		  delay(10);
		 // delay(1);

		  
		 
}
void init()
{
	wela=0;
    dula=0;
	TMOD=0x01;
	TH0=(65535-50000)/256;
	TL0=(65535-50000)%256;
	EA=1;
	ET0=1;
	TR0=1;
}
void timer0() interrupt 1
{
	TH0=(65535-50000)/256;
	TL0=(65535-50000)%256;
	aa++;
}