时钟基于51单片机.zip_51单片机_AX74_JGNO_beltd2k_时钟程序

//基于51单片机 时钟程序 #include<reg52.h> //宏定义 #define uint unsigned int #define uchar unsigned char //位定义 sbit wei1=P2^7; //锁存器于P2^7(数码管位选) sbit duan1=P2^6; //锁存器于P2^6(数码管段选) sbit key_a=P3^4; //按键1（用于选时，分，秒） sbit key_b=P3^5; //进行+ sbit key_c=P3^6; //进行- //sbit shijian=P3^7; //全局变量 uint duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //共阴数码管段选-(无dp) uint duandp[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef}; //共阴数码管段选-(有dp) uint wei[] ={0xdf,0xef,0xf7,0xfb,0xfd,0xfe}; //低电平有效位选 uint num[3][2]; char shi=0,fen=0,miao=0; uchar t0=0,key=0,key_num=0; //函数 void xianshi(); //显示 void kongzhi(); //按键控制 void delay(uint ms) //延时程序 { uint i,j; for(i=ms;i>0;i--) for(j=115;j>0;j--); } void time_0()interrupt 1 //to中断函数 { TH0=(65536-45872)/256; TL0=(65536-45872)%256; t0++; if(t0==10) { key=0; } if(t0==20) { t0=0; key=1; miao++; if(miao==60) { miao=0; fen++; if(fen==60) { fen=0; shi++; if(shi==24) { shi=0; } } } } } //主函数 void main() { TMOD=0X01; TH0=(65536-45872)/256; TL0=(65536-45872)%256; EA=1; ET0=1; //开启 TR0=1; //启动 while(1) { xianshi(); kongzhi(); } } void kongzhi() { if(key_a ==0) { delay(10); if(key_a==0)//去抖动后再次确认 { delay(10); key_num++; TR0=0; if(key_num==5) { TR0=1; key_num=0; } while(key_a==0);//松手检测 } } if((key_num ==2)&&(key_b ==0))//sec + { delay(10); miao++; if(miao>59) { miao=0; } while(key_b==0);//松手检测 } if((key_num == 2)&&(key_c == 0))//sec - { delay(10); miao--; if(miao<0) { miao=59; } while(key_c==0);//松手检测 } if((key_num ==3)&&(key_b ==0))//min + { delay(10); fen++; if(fen>59) { fen=0; } while(key_b==0);//松手检测 } if((key_num ==3)&&(key_c ==0))//min - { delay(10); fen--; if(fen<0) { fen=59; } while(key_c==0);//松手检测 } if((key_num ==4)&&(key_b ==0))//shi + { delay(10); shi++; if(shi>23) { shi=0; } while(key_b==0);//松手检测 } if((key_num ==4)&&(key_c ==0))//shi - { delay(10); shi--; if(shi<0) { shi=23; } while(key_c==0);//松手检测 } } void xianshi() { uint i; num[0][0]=miao%10; num[0][1]=miao/10; num[1][0]=fen%10; num[1][1]=fen/10; num[2][0]=shi%10; num[2][1]=shi/10; for(i=0;i<6;i++) { P0=0XFF; //消影 wei1=1; P0=wei[i]; wei1=0; P0=0; //消影 if((i==2||i==4)&&key==1) { duan1=1; P0=duandp[num[i/2][i%2]]; //i/2={0.1.2} i%2={0,1} duan1=0; delay(1); } else { duan1=1; P0=duan[num[i/2][i%2]]; //i/2={0.1.2} i%2={0,1} duan1=0; delay(1); } } }