[嵌入式]51单片机数码管秒表

?

?

左下角的独立按键k1控制开始和暂停 ，k2按一下加一小时，k3按一下加十分钟，k4按一下加一分钟

#include<reg52.h>
typedef unsigned int u16;  
typedef unsigned char u8;
char mb[8],key2biao=0,key3biao=0,key4biao=0,key1biao=0;
u16 n=10,ss;
long temp,aa,s;
sbit key1=P3^1;
sbit key2=P3^0;
sbit key3=P3^2;
sbit key4=P3^3;
sbit weixuan1=P2^2;
sbit weixuan2=P2^3;
sbit weixuan3=P2^4;
char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40,0x00};
void delay(int z);
void display();
void init();                       
void keyscan();


void main()
{
	 
	 init(); 
	 while(1)
	 { 
		
		keyscan();
		 if(s==20)
		 {
			 s=0;
			 temp++;
		 }	 
			 
		mb[7]=temp/36000;
		mb[6]=temp/3600%10;
		mb[5]=n;
		mb[4]=temp/600%6;
		mb[3]=temp/60%10; 
		mb[2]=n;
		mb[1]=temp/10%6; 
		mb[0]=temp%10;
	
		display();
			 
	}
}	
		

		
		
		
void display ()
{
	 u8 i;
	for(i=0;i<8;i++)
	{
		  switch(i)
		    {
					 case(0):
						 weixuan1=0;weixuan2=0;weixuan3=0;break;
					 case(1):
						 weixuan1=1;weixuan2=0;weixuan3=0;break;
					 case(2):
						 weixuan1=0;weixuan2=1;weixuan3=0;break;
					 case(3):
						 weixuan1=1;weixuan2=1;weixuan3=0;break;
					 case(4):
						 weixuan1=0;weixuan2=0;weixuan3=1;break;
					 case(5):
						 weixuan1=1;weixuan2=0;weixuan3=1;break;
					 case(6):
						 weixuan1=0;weixuan2=1;weixuan3=1;break;
					 case(7):
						 weixuan1=1;weixuan2=1;weixuan3=1;break;
        }
				P0=table[mb[i]];
				delay(1);
				P0=0x00;
	}
}


void init()
{
	TMOD|=0x11;  
	TH0=(65536-50000)/256;
  TL0=(65536-50000)%256;
	TH1=(65536-50000)/256;
  TL1=(65536-50000)%256;
  EA=1;
	ET0=1;   
	TR0=0;   
	ET1=1;  
	TR1=0;
  IT0=1;
	EX0=1;
}

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

void tee() interrupt 3
{
	TH1=(65536-50000)/256;
  TL1=(65536-50000)%256;
	ss++;
		 if(ss==10)
	 {
		 ss=0;
		 if(n==10)
		 {
			 n=11;
		 }
		 else n=10;
	 }
	
}


void delay (int xms)
{
int x,y;
	for (x=xms;x>0;x--)
	  for (y=123;y>0;y--);
}

void keyscan()
{
	if((key1==0)&&(!key1biao))
	{
		delay(1);
		key1biao=1;
		if(key1==0)
		{
			 if (TR0==0)
			 {
					TR0=1;
				  TR1=1;
			 }
			 else if(TR0==1)
			 {
					TR0=0;
				  TR1=0;
			 }
			
		}
	}
	else if(key1!=0)
	{
		key1biao=0;
	}
	
	
	if((key2==0)&&(!key2biao))
	{

		delay(1);
		key2biao=1;
		if(key2==0)
		{
			TR0=0;
			temp=temp+3600;
			if (temp>86400)
			{
				temp = 0;
			}
		}
	}
		else if(key2!=0)
		{
			key2biao=0;
		}
		
		
if((key3==0)&&(!key3biao))
	{
		delay(1);
		key3biao=1;
		if(key3==0)
		{
			TR0=0;
			temp=temp+600;
		}
	}
else if(key3!=0)
		{
			key3biao=0;
		}
		
		
 if((key4==0)&&(!key4biao))
	{
		delay(1);
		key4biao=1;
		if(key4==0)
		{
      TR0=0;
			temp=temp+60;
		}
	}
	else if(key4!=0)
		{
			key4biao=0;
		}
}