单片机课程设计_基于51单片机的篮球计分器_

#include<reg52.h> #define uchar unsigned char unsigned char code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0x0F8,0x80,0x90}; //数码管显示 uchar dispbuf[4]={0,0,0,0};//用于记录比分 uchar databuf[4]={0,0,0,0};//红外读入四组信号 void delay(unsigned char m);//延迟函数 void display(); //显示函数 void detect(); //红外读数据函数 void IR_goto(); //按键功能操作 sbit P32=P3^2; sbit P25=P2^5; void main() { P2=0x10; //打开74HC573锁存使能 display();//调用显示函数 while(1) { if(!P32) detect();//一直循环直到读到红外信号 display(); } } void display() { unsigned char dispdata; //数值数据 unsigned char i,j=0xFE; //j=11111110 让四个数码管循环显示 for(i=0;i<4;i++) { P2=j; dispdata=dispbuf[i]; P0=table[dispdata];//显示数码管的数字 delay(200);//延时 j=(j<<1)|0x01; //j位左移与00000001或 if(j==0xEF)j=0xFE; } if(dispbuf[0]>dispbuf[2]) P1=0xBF; //甲队领先 else if(dispbuf[0]==dispbuf[2]) if(dispbuf[1]>dispbuf[3]) P1=0xBF; //甲队领先 else if(dispbuf[1]==dispbuf[3]) P1=0xFF; //平手 else P1=0x7F; //乙队领先 else P1=0x7F; //乙队领先 } void detect() //读取红外模块 { uchar i; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; delay(250); if(P32) return; //一旦有高电平则退出 while(!P32) {} //等到p32是高电平，否则一直循环避开9ms脉冲 delay(250); delay(250); delay(250); delay(250); delay(200); //延时约4.5 if(!P32) //低电平认为是连发码 { IR_goto(); display(); return; } delay(250); delay(250); delay(250); delay(250); delay(200); //延时约4.5避开结果码 while(!P32) {} //等待第一位高电平信号 for(i=0;i<4;i++) //以下为4组数据码读取 { while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x01; delay(250); delay(250); } else databuf[i]=databuf[i]&0xFE; while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x02; delay(250); delay(250); } else databuf[i]=databuf[i]&0xFD; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x04; delay(250); delay(250); } else databuf[i]=databuf[i]&0xFB; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x08; delay(250); delay(250); } else databuf[i]=databuf[i]&0xF7; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x10; delay(250); delay(250); } else databuf[i]=databuf[i]&0xEF; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x20; delay(250); delay(250); } else databuf[i]=databuf[i]&0xDF; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x40; delay(250); delay(250); } else databuf[i]=databuf[i]&0xBF; // while(!P32) {} delay(210); delay(210); if(P32) { databuf[i]=databuf[i]|0x80; delay(250); delay(250); } else databuf[i]=databuf[i]&0x7F; // } IR_goto(); //判断键值判断 display(); //显示 } void IR_goto() { uchar i; databuf[2]=~databuf[2]; //与反码对比判断 if(databuf[2]!=databuf[3]) return; P2=P2&0xEF; delay(250); P2=P2|0x10; if(databuf[3]==0xE9) //按键"0"判断显示 { for(i=0;i<4;i++) dispbuf[i]=0x00; //显示全部清零 } if(databuf[3]==0xF3) //按键"1"判断显示 { dispbuf[1]=dispbuf[1]+1; if(dispbuf[1]>=10) { dispbuf[0]=dispbuf[0]+1; dispbuf[1]=dispbuf[1]-10; } P1=0xFE; delay(250); delay(250); delay(250); delay(250); } if(databuf[3]==0xE7) //按键"2"判断显示 { dispbuf[1]=dispbuf[1]+2; if(dispbuf[1]>=10) { dispbuf[0]=dispbuf[0]+1; dispbuf[1]=dispbuf[1]-10; } P1=0xFD; delay(250); delay(250); delay(250); delay(250); } if(databuf[3]==0xA1) //按键"3"判断显示 { dispbuf[1]=dispbuf[1]+3; if(dispbuf[1]>=10) { dispbuf[0]=dispbuf[0]+1; dispbuf[1]=dispbuf[1]-10; } P1=0xFB; delay(250); delay(250); delay(250); delay(250); } if(databuf[3]==0xF7) //按键"4"判断显示 { dispbuf[3]=dispbuf[3]+1; if(dispbuf[3]>=10) { dispbuf[2]=dispbuf[2]+1; dispbuf[3]=dispbuf[3]-10; } P1=0xF7; delay(250); delay(250); delay(250); delay(250); } if(databuf[3]==0xE3) //按键"5"判断显示 { dispbuf[3]=dispbuf[3]+2; if(dispbuf[3]>=10) { dispbuf[2]=dispbuf[2]+1; dispbuf[3]=dispbuf[3]-10; } P1=0xEF; delay(250); delay(250); delay(250); delay(250); } if(databuf[3]==0xA5) //按键"6"判断显示 { dispbuf[3]=dispbuf[3]+3; if(dispbuf[3]>=10) { dispbuf[2]=dispbuf[2]+1; dispbuf[3]=dispbuf[3]-10; } P1=0xDF; delay(250); delay(250); delay(250); delay(250); } for(i=0;i<4;i++) databuf[i]=0x00; return; } void delay(unsigned char m) { while(--m); }