#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code tab[] ={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,
0x82,0xf8,0x80,0x90,0xff}; //0,12,3,4,5,6,7,8,9,关显示
uchar b,d,t; //定义变量
uchar fen=10,miao=0; //定时初始时间变量
uchar flag; //标志位
uchar temp; //矩形键盘键值
sbit beep =P1^7 ; //蜂鸣器
void delay(uint z) //延时函数
{
uint x,y;
for(x=z;x>0;x--)
for( y= 110;y>0;y--);
}
void dispaly() //定时时间显示
{
uchar miaoge,fenge,miaoshi,fenshi;
miaoge = miao%10;
P2 = 0x80;;
P0 =tab[miaoge];
delay(1);
miaoshi = miao/10;
P2 =0x40;
P0 =tab[miaoshi];
delay(1);
fenge = fen%10;
P2=0x20;
P0 =tab[fenge];
delay(1);
fenshi =fen/10;
P2 =0x10;
P0 =tab[fenshi];
delay(1);
P2 =0x00;
}
void dispaly1(char a) //甲队比分显示
{
uchar ge1,shi1;
b=a;
ge1=b%10;
P2=0x02;
P0=tab[ge1];
delay(1);
shi1=b/10;
P2=0x01;
P0=tab[shi1];
delay(1);
P2=0x00;
}
void dispaly2(char c) //乙队比分显示
{
uchar ge2,shi2;
d=c;
ge2 =d%10;
P2=0x08;
P0=tab[ge2];
delay(1);
shi2 =d/10;
P2 = 0x04;
P0 =tab[shi2];
delay(1);
P2 =0x80;
}
void keyscan() //矩阵键盘扫描控制
{
char a,c,e,f;
dispaly1(a);
dispaly2(c);
P3 =0xfe;
temp=P3;
temp =temp&0xf0;
while(temp!=0xf0)
{
delay(5);
temp =P3;
temp =temp&0xf0;
while(temp!=0xf0)
{
temp =P3;
if(temp==0xee)
{
delay(5);
if(temp == 0xee)
{
a++; //甲队比分加1
if(a>=100)
a=99;
dispaly1(a);
}
}
if(temp==0xde)
{
delay(5);
if(temp==0xde)
{
a=a+2; //甲队比分加2
if(a>=100)
a=99;
dispaly1(a);
}
}
if(temp==0xbe)
{
delay(5);
if(temp==0xbe)
{
a=a+3; //甲队比分加3
if(a>=100)
a=99;
dispaly1(a);
}
}
if(temp ==0x7e)
{
delay(5);
if(temp ==0x7e)
{
a--; //甲队比分减1
if(a<= -1)
a=0;
dispaly1(a);
}
}
while(temp!= 0xf0) //松手检测
{
temp =P3;
temp=temp&0xf0;
dispaly1(a);
}
}
}
P3=0xfd;
temp=P3;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay(5);
temp =P3;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp =P3;
if(temp==0xed)
{
delay(5);
if(temp ==0xed)
{
c++; //乙队比分加1
if(c>=100)
c=99;
dispaly2(c);
}
}
if(temp==0xdd)
{
delay(5);
if(temp==0xdd)
{
c= c+2; //乙队比分加2
if(c>=100)
c=99;
dispaly2(c);
}
}
if(temp==0xbd)
{
delay(5);
if(temp ==0xbd)
{
c=c+3; //乙队比分3
if(c>=100)
c=99;
dispaly2(c);
}
}
if(temp ==0x7d)
{
delay(5);
if(temp ==0x7d)
{
c--; //乙队比分减1
if(c <= -1)
c=0;
dispaly2(c);
}
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
dispaly2(c);
}
}
}
P3=0xfb;
temp=P3;
temp =temp&0xf0;
while(temp!=0xf0)
{
delay(5);
temp =P3;
temp=temp&0xf0;
while(temp!=0xf0)
{
temp =P3;
if(temp==0xeb)
{
delay(5);
if(temp ==0xeb)
{
a=0; //双方比分清零
dispaly1(a);
c=0;
dispaly2(c);
}
}
if(temp == 0xdb)
{
delay(5);
if(temp ==0xdb)
{
e=a;
f=c;
a=f;
dispaly1(a); //双方比分切换
c=e;
dispaly2(c);
}
}
if(flag!=1) //避免误操作，只有在时间停止的情况下才能加/减定时时间
{
if(temp==0xbb)
{
delay(5);
if(temp==0xbb)
{
fen++; // 定时时间加1
if(fen==99)
fen=0;
}
}
if(temp ==0x7b)
{
delay(5);
if(temp==0x7b)
{
fen--; //定时时间减1
if(fen== -1)
fen=99;
}
}
}
while(temp!=0xf0)
{
temp=P3;
temp =temp&0xf0;
dispaly2(c);
}
}
}
P3=0xf7;
temp =P3;
temp=temp&0xf0;
while(temp!=0xf0)
{
delay(5);
temp=P3;
temp =temp&0xf0;
while(temp!=0xf0)
{
temp=P3;
if(temp==0xe7)
{
delay(5);
if(temp==0xe7)
{
TR0=1; //比赛开始计时按键
flag=1;
}
}
if(temp==0xd7)
{
delay(5);
if(temp==0xd7)
{
TR0=0; //比赛暂停计时按键
flag=0;
}
}
if(temp==0xb7)
{
delay(5);
if(temp==0xb7)
{
fen=0; //比赛时间清零
miao=0;
}
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
dispaly2(c);
}
}
}
}
void timer0(void)interrupt 1 //T0中断服务
{
TH0=0x4c; //50ms延时初值
TL0=0x00;
t++;
if(t==20) //50ms走20次刚好1S，1s时间到，减1操作
{
t=0;
miao--;
if(miao == -1)
{
fen--;
miao=59; //当59s减完，分减1
}
if(fen == -1)
{
fen=0; //分清零
miao=0;
beep=0; //时间停止蜂鸣器响
}
}
}
void init() //T0中断初始化
{
TMOD=0x01;
TH0= (65536-50000)/256;
TL0= (65536-50000)%256;
ET0=1;
EA=1;
TR0=0;
}
void main() //主程序
{
P2=0xfe;
init();
while(1)
{
dispaly();
keyscan();
}
}
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