单片机实验报告（简易报警器加简易数字时钟）

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit k0=P2^0; //光标移位 sbit k1=P2^1; //加 sbit k2=P2^2; //减 uchar code table0[]=" 2011-03-31 4"; uchar code table1[]=" 20:00:00"; uchar i,tcnt,shi,fen,miao,year,month,day,k0_keycnt; uchar year=11; uchar month=2; uchar day=7; uchar week=5; uchar count0,count1; sbit Kint0=P3^2; sbit Kint1=P3^3; sbit LED =P3^6; sbit beep =P3^7; //这三个引脚参考资料 sbit E=P2^7; //1602使能引脚 sbit RW=P2^6; //1602读写引脚 sbit RS=P2^5; //1602数据/命令选择引脚 void delay(uchar x) { uchar a; while(x--) for(a=120;a>0;a--); } void write_command(uchar tempdata) { E=0; delay(5); RS=0; delay(5); RW=0; P0=tempdata; delay(5); E=1; delay(5); E=0; } void write_data(uchar tempdata) { E=0; delay(5); RS=1; delay(5); RW=0; P0=tempdata; delay(5); E=1; delay(5); E=0; } void L1602_init(void) { write_command(0x38); write_command(0x0c); write_command(0x01); write_command(0x06); write_command(0x80); //第一行液晶显示 for(i=0;i<16;i++) { write_data(table0[i]); } write_command(0xc0); //第二行液晶显示 for(i=0;i<12;i++) { write_data(table1[i]); } TMOD=0x01; EA=1; ET0=1; TH0=(65536-50000)/256; TL0=(65536-50000)%256; TR0=1; } void write_week(uchar addr,uchar temp)//nyr代表“年月日” { uchar wek; wek=temp%10; write_command(0x80+addr); //写命令，从这个地址开始 write_data(0x30+wek); } void write_nyr(uchar addr,uchar temp)//nyr代表“年月日” { uchar s,g; s=temp/10; g=temp%10; write_command(0x80+addr); //写命令，从这个地址开始 write_data(0x30+s); delay(5); write_data(0x30+g); } void write_sfm(uchar addr,uchar temp)//sfm代表“时分秒” { uchar shi,ge; shi=temp/10; ge=temp%10; write_command(0xc0+addr); //写命令，从这个地址开始 write_data(0x30+shi); write_data(0x30+ge); } void timer0() interrupt 1 using 0 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; tcnt++; if(tcnt==18) //1s定时 { tcnt=0; miao++; if(miao==60) { miao=0; fen++; if(fen==60) { fen=0; shi++; if(shi==24) { shi=0; day++; week++; if(week==8) { week=1; } write_week(15,week); if(day==31) { day=0; month++; if(month==13) { month=0; year++; if(year==100) { year=0; } write_nyr(5,year); } write_nyr(8,month); } write_nyr(11,day); } write_sfm(4,shi); } write_sfm(7,fen); } write_sfm(10,miao); } } void keyscan() { if(k0==0) //..................//光标移位 { delay(10); if(k0==0) { k0_keycnt++; while(!k0); //松手之后开始执行定时器停止，光标闪烁 if(k0_keycnt==1) //功能按键暂停/运行键被按键第1下 { TR0=0; write_command(0xc0+11);//指针指到“秒”钟个位处 write_command(0x0e); //光标开不闪烁，此处不设置闪烁，闪烁不好看 } if(k0_keycnt==2) //功能按键暂停/运行键被按键第2下 { write_command(0xc0+8); //指针指到“分”钟个位处 /*uchar code table1[]=" 00:00:00";*/ } if(k0_keycnt==3) //功能按键暂停/运行键被按键第3下 { write_command(0xc0+5); //指针指到“时”钟个位处 } if(k0_keycnt==4) { write_command(0x80+15);//指针指到“周”的位置 } if(k0_keycnt==5) //功能按键暂停/运行键被按键第4下 { write_command(0x80+12);//指针指到“日”的个位处 } if(k0_keycnt==6) //功能按键暂停/运行键被按键第5下 { write_command(0x80+9); //指针指到“月”的个位处 /*uchar code table0[]=" 2011-02-07";*/ } if(k0_keycnt==7) //功能按键暂停/运行键被按键第6下 { write_command(0x80+6); //指针指到“年”的个位处 } if(k0_keycnt==8) //功能按键暂停/运行键被按键第7下，暂停取消，继续运行时钟 { k0_keycnt=0; write_command(0x0c); //光标关，继续运行时钟 TR0=1; } } } if(k0_keycnt!=0) { if(k1==0) //加“1”键盘，检测k1是否有键按下？ { delay(10); if(k1==0) { while(!k1); //等待k1键松开之后开始执行按键之后的程序 if(k0_keycnt==1) //秒设置 { miao++; if(miao==60) { miao=0; } write_sfm(10,miao); write_command(0xc0+11); } if(k0_keycnt==2) //分设置 /*uchar code table1[]=" 00:00:00";*/ { fen++; if(fen==60) { fen=0; } write_sfm(7,fen); write_command(0xc0+8); } if(k0_keycnt==3) //时设置 { shi++; if(shi==24) { shi=0; } write_sfm(4,shi); write_command(0xc0+5); } if(k0_keycnt==4) //周设置 { week++; if(week==8) { week=1; } write_week(15,week); write_command(0x80+15); } if(k0_keycnt==5) //日设置 { day++; if(day==31) { day=0; } write_nyr(11,day); write_command(0x80+12); } if(k0_keycnt==6) //月设置 /*uchar code table0[]=" 2011-02-07 5";;*/ { month++; if(month==12) { month=0; } write_nyr(8,month); write_command(0x80+9); } if(k0_keycnt==7) //年设置 { year++; if(year==100) { year=0; } write_nyr(5,year); write_command(0x80+6); } } } if(k2==0) //................... //减号键盘 { delay(10); if(k2==0) { while(!k2); if(k0_keycnt==1) //秒设置 { miao--; if(miao==-1) { miao=59; } write_sfm(10,miao); write_command(0xc0+11); } if(k0_keycnt==2) //分设置 /*uchar code table1[]=" 00:00:00";*/ { fen--; if(fen==-1) { fen=59; } write_sfm(7,fen); write_command(0xc0+8); } if(k0_keycnt==3) //时设置 { shi--; if(shi==-1) { shi=23; } write_sfm(4,shi); write_command(0xc0+5); } if(k0_keycnt==4) //周设置 { week--; if(week==0) { week=7; } write_week(15,week); write_command(0x80+15); } if(k0_keycnt==5) //天设置 { day--; if(day==-1) { day=30; } write_nyr(11,day); write_command(0x80+12); } if(k0_keycnt==6) //月设置 /*uchar code table0[]=" 2011-02-07 5";*/ { month--; if(month==-1) { month=12; } write_nyr(8,month); write_command(0x80+9); } if(k0_keycnt==7) //年设置 { year--; if(year==-1) { year=99; } write_nyr(5,year); write_command(0x80+6); } } } } } void init() //初始化子函数 { P2 = 0x0f; //使灯灭 P1 = 0x00; ET0 = 1; //外部中断0请求触发方式 ET1 = 1; //外部中断1请求触发方式 IE = 0x87;//EA=1;EX1=0;EX0=1,ET0=1; IP = 0x07; } void external_int0() interrupt 0 { count0++; if(count0==1) { if(Kint0==0) { while(!Kint0); //等待键放松 delay(5); P1=0x3f; //数码管显示0 for(i=0;i<50;i++)//LED灯闪烁一段时间 { LED=~LED; delay(50); } count0=0; //按键计数清零 P1=0x00; //灭灯 P2=P2|0x0f; //灭灯 LED=1; //灭灯 } } } void external_int1() interrupt 2 { count1++; if(count1==1) { if(Kint1==0) { while(!Kint1); delay(5); P1=0x06; for(i=0;i<50;i++) { beep=~beep; delay(50); } count1=0; P1=0x00; P2=P2|0x0f; beep=1; } } } void main() { init(); L1602_init(); while(1) { keyscan(); } }