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用51单片机做的时钟

2016-12-1 23:29:48 3287 单片机

0 用51单片机做的时钟运用的知识点： 1、定时器 2、液晶 3、IIC协议 4、独立按键实现的功能： 1、可以通过按键调节秒、分、时、日、月、年，按键可加可减，可确认 2、任何时候断电可以保存数据，重新上电可以继续运行 3、每月的天数不一样，例如：2月有28天，1月31天；基于郭天祥视屏写成，有兴趣的同学可以交流下？ #include #define uchar unsigned char #define uint unsigned int char a,num,miao,shi,fen,ri,yue,setnum,add,flag,temp,edg; uint nian; uchar code table[]=" 2016-10-22 "; uchar code table1[]={"23:59:55"}; *it lcdwr=P2^5; it lcdrs=P2^6; it lcden=P2^7; it LED=P2^2; it key1=P3^0; it key2=P3^1; it key3=P3^2; it key4=P3^3; it scl=P2^1; it sda=P2^0; void delay(uchar tt) { uchar x,y; for(x=tt;x>0;x--) for(y=110;y>0;y--); } void start() { sda=1; delay(1); scl=1; delay(1); sda=0; delay(1); } void stop() { sda=0; delay(1); scl=1; delay(1); sda=1; delay(1); } void respon() { uchar i=0; scl=1; delay(1); while((sda==1)&&(i<200)) i++; scl=0; delay(1); } void writiie(uchar date) { uchar i; edg=date; for(i=0;i<8;i++) { scl=0; delay(1); edg=edg<<1; sda=CY; scl=1; delay(1); } scl=0; delay(1); sda=1; delay(1); } char readiie() { uchar i,k; scl=0; delay(1); sda=1; delay(1); for(i=0;i<8;i++) { scl=1; delay(1); k=(k<<1)\|sda; scl=0; delay(1); } return k; } void lcd_com(uchar com) { lcdrs=0; delay(1); P0=com; delay(1); lcden=1; delay(5); lcden=0; } void lcd_date(uchar date) { lcdrs=1; delay(1); P0=date; delay(1); lcden=1; delay(5); lcden=0; } void lcdwr1(uchar adress,uchar date) { lcd_com(0X80+adress); lcd_date(0x30+date/10); lcd_date(0x30+date%10); } void lcdwr2(uchar adress,uint date) { lcd_com(0X80+adress); lcd_date(0x30+date/1000); lcd_date(0x30+date/100%10); lcd_date(0x30+date/10%10); lcd_date(0x30+date%10); } void iiewritr(uchar add,uchar ss) { start(); writiie(0Xa0); respon(); writiie(add); respon(); writiie(ss); respon(); stop(); } void key_set() { if(key1==0) { delay(5); if(key1==0) { while(!key1); setnum++; TR0=0; lcd_com(0X0d); if(setnum==7) { setnum=1; } switch(setnum) { case 1: // miao++; // lcdwr1(0x40+0X08,miao); // lcd_com(0X0d); lcd_com(0X80+0X40+0X08); break; case 2: // lcd_com(0X0d); lcd_com(0X80+0X40+0X05); break; case 3: // lcd_com(0X0d); lcd_com(0X80+0X40+0X02); break; case 4: // lcd_com(0X0d); lcd_com(0X80+0X09); break; case 5: // lcd_com(0X0d); lcd_com(0X80+0X06); break; case 6: // lcd_com(0X0d); lcd_com(0X80+0X01); break; } } } if(setnum!=0) { if(key2==0) { delay(5); if(key2==0) { while(!key2); LED=~LED; switch(setnum) { case 1: miao++; if(miao==60) { miao=0; } // lcd_com(0X80+0X40+0X08); iiewritr(1,miao); lcdwr1(0x40+0X08,miao); lcd_com(0X80+0X40+0X08); break; case 2: fen++; if(fen==60) { fen=0; } iiewritr(2,fen); lcdwr1(0x40+0X05,fen); lcd_com(0X80+0X40+0X05); break; case 3: shi++; if(shi==24) { shi=0; } iiewritr(3,shi); lcdwr1(0x40+0X02,shi); lcd_com(0X80+0X40+0X02); break; case 4: ri++; if(ri>temp-1) { ri=1; } iiewritr(4,ri); lcdwr1(0X09,ri); lcd_com(0X80+0X09); break; case 5: yue++; if(yue==13) { yue=1; } iiewritr(5,yue); lcdwr1(0X06,yue); lcd_com(0X80+0X06); break; case 6: nian++; lcdwr2(0X01,nian); lcd_com(0X80+0X01); break; } } } if(key3==0) { delay(5); if(key3==0) { while(!key3); LED=~LED; switch(setnum) { case 1: miao--; if(miao<0) { miao=59; } // lcd_com(0X80+0X40+0X08); iiewritr(1,miao); lcdwr1(0x40+0X08,miao); lcd_com(0X80+0X40+0X08); break; case 2: fen--; if(fen<0) { fen=59; } iiewritr(2,fen); lcdwr1(0x40+0X05,fen); lcd_com(0X80+0X40+0X05); break; case 3: shi--; if(shi<0) { shi=23; } iiewritr(3,shi); lcdwr1(0x40+0X02,shi); lcd_com(0X80+0X40+0X02); break; case 4: ri--; if(ri<=0) { ri=temp-1; } iiewritr(4,ri); lcdwr1(0X09,ri); lcd_com(0X80+0X09); break; case 5: yue--; if(yue<0) { yue=12; } iiewritr(5,yue); lcdwr1(0X06,yue); lcd_com(0X80+0X06); break; case 6: nian--; lcdwr2(0X01,nian); lcd_com(0X80+0X01); break; } } } if(key4==0) { delay(5); if(key4==0) { setnum=0; lcd_com(0X80+0X05); lcd_date(table[5]); lcd_com(0X80+0X08); lcd_date(table[8]); delay(2); lcd_com(0X80+0x40+0x04); lcd_date(table1[2]); lcd_com(0X80+0x40+0x07); lcd_date(table1[5]); delay(2); // lcdwr1(0x40+0X08,miao); // lcdwr1(0x40+0X05,fen); // lcdwr1(0x40+0X02,shi); // lcdwr1(0X09,ri); // lcdwr1(0X06,yue); // lcdwr2(0X01,nian); TR0=1; lcd_com(0X0C); // lcd_com(0X01); } } } } char iieread(uchar add) { uchar date; start(); writiie(0Xa0); respon(); writiie(add); respon(); start(); writiie(0Xa1); respon(); date=readiie(); respon(); stop(); return date; } void init() { lcdwr=0; delay(1); lcden=0; lcd_com(0X38); lcd_com(0X0C); lcd_com(0X06); lcd_com(0X01); TMOD=0X01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; lcd_com(0X80+0X05); lcd_date(table[5]); lcd_com(0X80+0X08); lcd_date(table[8]); delay(2); lcd_com(0X80+0x40+0x04); lcd_date(table1[2]); lcd_com(0X80+0x40+0x07); lcd_date(table1[5]); delay(2); miao=iieread(1); if(miao>59) miao=0; lcdwr1(0x40+0X08,miao); fen=iieread(2); if(fen>59) fen=0; lcdwr1(0x40+0X05,fen); shi=iieread(3); if(shi>23) shi=0; lcdwr1(0x40+0X02,shi); ri=iieread(4); if(ri>31\|\|ri<0) ri=1; lcdwr1(0X09,ri); yue=iieread(5); if(yue>12\|\|yue<0) yue=1; lcdwr1(0X06,yue); nian=2016; lcdwr2(0X01,nian); scl=1; delay(1); sda=1; } void main() { init(); while(1) { if(yue<=7) { if(yue%2==0) { if(yue==2) { temp=29; } else temp=32; } if(yue%2!=0) { temp=32; } } if(yue>7&&yue<13) { if(yue%2==0) { temp=32; } else temp=31; } // } / lcdwr1(0X06,yue); lcdwr1(0X09,ri); lcdwr1(0x40+0X02,shi); lcdwr1(0x40+0X05,fen); lcdwr1(0x40+0X08,miao); / key_set(); } } void time() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; num++; if(num==20) { num=0; miao++; if(miao==60) { miao=0; fen++; if(fen==60) { fen=0; shi++; if(shi==24) { shi=0; ri++; LED=~LED; flag=1; if(ri==temp) { ri=1; yue++; if(yue==13) { yue=1; nian++; lcdwr2(0X01,nian); } lcdwr1(0X06,yue); iiewritr(5,yue); } lcdwr1(0X09,ri); iiewritr(4,ri); } lcdwr1(0x40+0X02,shi); iiewritr(3,shi); } lcdwr1(0x40+0X05,fen); iiewritr(2,fen); } lcdwr1(0x40+0X08,miao); iiewritr(1,miao); } //time_lcd(); } 复制代码* 0
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