51单片机抢答器源程序.doc

/*程序名:8路抢答器.c作 者:风雪子郁时 间:2012/8/22邮 箱：地 址：四川信息职业技术学院(雪峰校区) */#include#includesbit sjjia=P10;sbit sjjian=P11;sbit kaishi=P12;sbit fuwei=P13;sbit soud=P14;sbit led_r=P15;sbit led_y=P16;sbit led_ce=P33;sbit key_ce=P34;unsigned char num=0,1,2,3,4,5,6,7,8,9,num2;unsigned char model,time,temp;void init()/初始化函数TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;ET0=1;TR0=0;EA=1;P1=0x0f;led_ce=1;key_ce=1;model=0;time=30;void delay(unsigned char i)/延时unsigned char j,k;while(i-)for(j=100;j0;j-)for(k=100;k0;k-);void star() /启动lcd_xml(0x80);lcd_xsj( welcome );delay(100);lcd_xml(0xc0);lcd_xsj(= );delay(30);lcd_xml(0xc0);lcd_xsj(= );delay(30);lcd_xml(0xc0);lcd_xsj(= );delay(30);lcd_xml(0xc0);lcd_xsj(= );delay(30);lcd_xml(0xc0);lcd_xsj(=);delay(30);lcd_xml(0xc0);lcd_xsj( 8 Way Responder);delay(80);void led_num() /刷新倒计时lcd_xml(0x80);lcd_xsj( Countdown : );lcd_xml(0x8d);lcd_xsj2(numtime/10);lcd_xml(0x8e);lcd_xsj2(numtime%10);void reset()/复位TR0=0;P1=0x0f;led_ce=1;key_ce=1;led_r=0;led_y=0;P2=0xff;model=0;time=30;led_num();lcd_xml(0xc0);lcd_xsj( Not started );void Not_started()if(sjjia=0)delay(10);if(sjjia=0)time+;if(time=100) time=0;led_num();if(sjjian=0)delay(10);if(sjjian=0)time-;if(time=0) time=99;led_num();if(kaishi=0)delay(10);if(kaishi=0)model=1;TR0=1;lcd_xml(0xc0);lcd_xsj( Start Responder);soud=1;delay(10);soud=0;void anjian()led_ce=1;key_ce=0;if(P2 != 0xff)delay(5);if(P2 != 0xff)temp=P2;model=3;led_r=1;soud=1;delay(10);soud=0;switch(temp)case 0x01:num2=1;break;case 0x02:num2=2;break;case 0x04:num2=3;break;case 0x08:num2=4;break;case 0x10:num2=5;break;case 0x20:num2=6;break;case 0x40:num2=7;break;case 0x80:num2=8;break;lcd_xml(0xc0);lcd_xsj( Competitor: );lcd_xml(0xce);lcd_xsj2(numnum2);led_ce=0;key_ce=1;time=60;P2=temp;void finish()if(!time)led_y=1;lcd_xml(0xc0);lcd_xsj( End );void main()init();lcd_init();star();reset();while(1)if(fuwei=0)/复位键检测delay(1);if(fuwei=0)reset();switch(model)case 0:Not_started();break;case 1:anjian();break;case 2:finish();break;case 3:break;default : model=0;break;void timee() interrupt 1/1s函数中断unsigned char a;TH0=(65536-50000)/256;TL0=(65536-50000)%256;a+;/是否满1sif(a=24)a=0;if(model=1 | model=3)time-;led_num();if(time=0)model=2;soud=1;delay(20);soud=0;/*程序名:lcd1602.h作 者:风雪子郁时 间:2012/8/22邮 箱：地 址：四川信息职业技术学院(雪峰校区) *说明* 适用晶振：12MHZ占用变量名：lcd_db,lcd_rs,lcd_rw,lcd_e;占用函数名：lcd_delay(),lcd_xsj(),lcd_xsj2(),lcd_xml(),lcd_init();调用：lcd_init() : 主函数中调用初始化lcd_xsj(xie shu ju chuan) ： 写数据串lcd_xsj2(a) : 写单个数据字符lcd_xml(0x01) : 写操作命令*/定义端口#define lcd_db P0/数据口DB0DB7定义sbit lcd_rs=P32;sbit lcd_rw=P31;sbit lcd_e=P30;/延时函数void lcd_delay()unsigned char i;for(i=0;i100;i+);/写数据串函数void lcd_xsj(unsigned char dat) unsigned char a;for(a=0;a16;a+)lcd_rs=1;lcd_rw=0;lcd_db=data;lcd_e=0;lcd_delay();lcd_e=1;lcd_delay();lcd_e=0;lcd_delay();/写数据函数void lcd_xsj2(unsigned char dat)lcd_rs=1;lcd_rw=0;lcd_db=dat;lcd_e=0;lcd_delay();lcd_e=1;lcd_delay();lcd_e=0;lcd_delay();/写命令函数void lcd_xml(unsigned char ml) lcd_rs=0;l