testtest.c

简单的单片机LED

#include<reg52.h>

#define uint unsigned int
#define uchar unsigned char
uchar tt,aa,bai,shi,ge,qian,temp,i,a;
sbit wei1=P0^0;
sbit wei2=P0^1;
sbit wei3=P0^2;
sbit wei4=P0^3;
sbit ledwei=P2^1;
sbit P1_2=P1^2;
uchar code table[] ={
0x7e,0x42,0x5d,0x57,0x63,
0x37,0x3f,0x52,0x7f,0x77};
uchar code time[] ={0x01,0x02,0x04,0x08,0x40,0x20,0x10};

void display(uchar qian,uchar bai,uchar shi,uchar ge);
void delay(uint z);
void init();
void main()
{	
	init();
	while(1)
	{
		if(aa==20)
		  {
			aa=0;
			tt++;
			if(tt==1000)
			   {
					tt=0;
			   }
			qian=tt/1000;
            bai=tt%1000/100;
			shi=tt%100/10;
			ge=tt%10;     
		  }
		display(qian,bai,shi,ge);
	}
}

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}
void display(uchar qian,uchar bai,uchar shi,uchar ge)
{
     
     P1=table[qian];
	 wei3=0;
     delay(1);
     wei3=1;
      P1=table[bai];
	 wei2=0;
     delay(1);
     wei2=1;
     P1=table[shi];
     wei1=0;
     delay(1);
	 wei1=1;
     P1=table[ge];
     wei4=0;
     delay(1);
	 wei4=1;
     ledwei=0;
     P1=0x01;
     for(i=0;i<2;i++)
      {
		P1_2=1;
        P1_2=~P1_2;
      }
      P1=0x04;
     
     
     
}
void init()
{	

	tt=0;
	TMOD=0x01;
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	EA=1;
	ET0=1;
	TR0=1;
	
}

void timer0() interrupt 1
{
	TH0=(65536-50000)/256;
	TL0=(65536-50000)%256;
	aa++;	
}