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#include<reg52.h>
#include<intrins.h>
#define u8 unsigned char
#define u16 unsigned int
#define LED_xianshi P0 //數(shù)碼管顯示端口
#define LED_wei P2 //位選
#define KEY_COL P3 //P3口計時信號輸ru
sbit start=P1^5; //P1^5 開始搶答
sbit clear=P1^4; //清零信號
sbit man1=P1^0; //4人搶答口
sbit man2=P1^1;
sbit man3=P1^2;
sbit man4=P1^3;
sbit s1=P3^0;//對錯判斷
sbit s2=P3^1;
sbit k1=P2^0;//位選
sbit k2=P2^1;
sbit k3=P2^2;
sbit k4=P2^3;
char dc=0;
int man=0;
int score[4]={0,0,0,0}; //分數(shù)存儲開始為0
int cont=0;
int state=0; //狀態(tài)
int sec0=20; //起始值
int sec=20; //調(diào)節(jié)后的值
char ji=0;
char si=0;
sbit warningLED =P1^7; //蜂鳴器聲響控制
char biaozhi=0;
//u8 code seg[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x40};
u8 code seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0x11,0xbf};
unsigned int T0RH,T0RL,T1RH,T1RL;
u8 duan[]={0x5f,0x5f,0x5f,0x40};
u8 ad0;
u8 KEY_up_flag=1;
u8 KEY_use=0;
char code dx516[3] _at_ 0x003b;
u8 flag500ms=0; //設(shè)置標志位
u8 startflag=0;
u8 warning=0;
unsigned char GetADCValue(unsigned char chn); //函數(shù)申明調(diào)用
extern void I2CStart();
extern void I2CStop();
extern unsigned char I2CReadNAK();
extern bit I2CWrite(unsigned char dat);
unsigned char KEYscan(); //鍵盤掃描
void reset_init();
void KEYexe(u8 val);
void Duanmove(u8 Movedir);
void shanshuo();
int scanduicuo();
void delay2s()
{
TMOD=0x11;
TH1=0x3c;
TL1=0xb0;
ET1=1;
TR1=1;
EA=1;
}
void delay(u16 t)
{
while(t--);
}
void chushihua()
{
TMOD=0x11;
TH0=0x3c;
TL0=0xb0;
EA=1;
ET0=1;
TR0=1;
}
void display()
{
k4=0;
LED_xianshi=duan[0];
delay(255);
k4=1;
LED_xianshi=0x00;
k3=0;
LED_xianshi=duan[1];
delay(255);
k3=1;
LED_xianshi=0x00;
k2=0;
LED_xianshi=duan[2];
delay(255);
k2=1;
LED_xianshi=0x00;
k1=0;
LED_xianshi=duan[3];
delay(255);
k1=1;
LED_xianshi=0x00;
}
void main()
{
chushihua();
warningLED=0;
while(1)
{
k4=0;
LED_xianshi=duan[0];
delay(255);
k4=1;
LED_xianshi=0x00;
k3=0;
LED_xianshi=duan[1];
delay(255);
k3=1;
LED_xianshi=0x00;
k2=0;
LED_xianshi=duan[2];
delay(255);
k2=1;
LED_xianshi=0x00;
k1=0;
LED_xianshi=duan[3];
delay(255);
k1=1;
LED_xianshi=0x00;
KEYscan(); //判斷是那個人按下
if(state==0) //在未開始時能進行的操作
{
ad0=GetADCValue(0); //在未開始時可以設(shè)置倒計時初值；
sec0=ad0*30/255+20;
duan[3]=0xbf;
duan[2]=0xbf;
duan[1]=seg[sec0/10];
duan[0]=seg[sec0%10];
delay(255);
if(man!=0)
{
man=0;
warning=1;
}
if(start==0)
{
reset_init();//按下開始后倒計時 state標志位置1
state=1;
}
}
if(state==1) //處于開始的狀態(tài)時
{
if(man!=0)
{
dc=0;
while(!dc)
{
scanduicuo();
k4=0;
LED_xianshi=seg[man];
delay(255);
k4=1;
LED_xianshi=0x00;
k3=0;
LED_xianshi=0xbf;
delay(255);
k3=1;
LED_xianshi=0x00;
k2=0;
LED_xianshi=0xbf;
delay(255);
k2=1;
LED_xianshi=0x00;
k1=0;
LED_xianshi=0xbf;
delay(255);
k1=1;
LED_xianshi=0x00;
if(clear==0)
{
state=2;
break;
}
}
score[man-1]=score[man-1]+cont; //搶到后判斷對錯。對了加一分，錯了不加分
duan[3]=seg[man];
duan[2]=seg[17];
duan[1]=seg[score[man-1]/10%10];
duan[0]=seg[score[man-1]%10];
display();
state=2;
warning=1;
}
else
{
if(flag500ms)
{
flag500ms=0;
sec--;
duan[3]=0xff;
duan[2]=0xff;
duan[1]=seg[sec/10%10];
duan[0]=seg[sec%10];
if(sec==0)
{
warning=1;
state=2;
}
}
}
}
else if(state==2)
{
if(start==1)
{
man=0x0000;
delay(255);
state=0;
}
}
if(clear==0)
{
state=0;
score[3]=0;
score[2]=0;
score[1]=0;
score[0]=0;
duan[3] = seg[17];
duan[2] = seg[17];
duan[1] = seg[17];
duan[0] = seg[17];
display();
warningLED=0;
delay(1000);
while(!clear) //直到清零狀態(tài)結(jié)束
{
display();
}
}
if(warning)
{
warning=0x0000;
shanshuo();
}
}
}
unsigned char GetADCValue(unsigned char chn)
{
unsigned char val;
I2CStart();
if(!I2CWrite(0x48<<1))
{
I2CStop();
return 0;
}
I2CWrite(0x40 | chn);
I2CStart();
I2CWrite(0x48<<1 | 0x01);
val = I2CReadNAK();
I2CStop();
return val;
}
unsigned char KEYscan()
{
if(man1==0)
{
delay(1000);
if(man1==0)
{
man=1;
}
}
if(man2==0)
{
delay(1000);
if(man2==0)
{
man=2;
}
}
if(man3==0)
{
delay(1000);
if(man3==0)
{
man=3;
}
}
if(man4==0)
{
delay(1000);
if(man4==0)
{
man=4;
}
} //掃描誰按下的
if(start==1)
{
state=0;
}
if(start==0)
{
state==1;
}
if(clear==0)
{
state==2;
}
}
void reset_init()
{
sec=sec0;
duan[3] = 0;
duan[2] = 0;
duan[1] = seg[sec/10%10];
duan[0] = seg[sec%10];
man=0;
flag500ms=0;
TH0=0x3c;
TL0=0xb0;
}
void shanshuo()
{
warningLED=1;
delay2s();
while(warningLED)
{
display();
}
if(warningLED==0 || si==0)
{
TR1=0;
ET1=0;
}
}
//定時
void time() interrupt 1
{
TH0=0x3c;
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