基于STC89C52单片机时钟

1、基于STC89C52单片机时钟1.1602显示。第一行显示年月日，第二行显示时分秒。2.开机显示个性的画面，约5S后进入时间显示界面。3.汉字显示“年”“月”“日”。4.时间可调。时间调节由三按键控制。键一控制调节位，按下键一后，时钟停止走时，出现光标，每按一次光标移向下一个调节位，按五次后，退出调节模式。键二为加键，键三为减键。只有在模式调节下才起作用。5.该时钟程序仅仅只是时钟功能的实现，走时并不精确。或者说是参考模型，可以在此基础上进行优化和更改。按键部分可进行大优化，为了在实验板上做实验，而实验板为矩阵键盘。所以按键定义了四个端口。#include #include #define u

2、char unsigned char#define uint unsigned intsbit LCD_RS=P10;/ 定义寄存器选择sbit LCD_RW=P11;/ 定义读写信号线sbit LCD_EN=P12;/ 定义定义使能端sbit key1=P00;sbit key2=P04;sbit key3=P05;sbit key4=P06;void delay_ms(uint xms); /延时函数声明bit lcd_busy();/忙检查函数声明void lcd_wcmd(uchar cmd);/写指令寄存器IR函数声明void lcd_wdat(uchar dat);/写数据寄存器D

3、R函数声明void lcd_clr(); / 清屏函数声明void lcd_init(); / LCD初始化函数声明void key_mode();void year_moon_day();uchar dis_buf19;uchar dis=0,1,2,3,4,5,6,7,8,9;uchar code name1=help yourself!;uchar code name2=hold on!;ucharyear_month_day38=0 x04,0 x0f,0 x12,0 x0f,0 x0a,0 x1f,0 x02,0,/年0 x0f,0 x09,0 x0f,0 x09,0 x0f,0 x

4、09,0 x13,0 x00,/月0 x0e,0 x0a,0 x0a,0 x0e,0 x0a,0 x0a,0 x0e,0 x02 /日;uchar dingshi=0;/50ms计数uchar flag=0;/按键控制变量char miao=55,fen=59,shi=23;char moon=12,day=31;int year=2012;uchar leap;uchar shan;/控制时分的闪烁位uchar key_value;/*LCD显示部分*/读忙bit lcd_busy()bit result;LCD_RS=0;LCD_RW=1;LCD_EN=1;_nop_();_nop_();

5、_nop_();_nop_();result=(bit)(P2&0 x80);LCD_EN=0;return result;/清屏void lcd_clr()lcd_wcmd(0 x01);delay_ms(5);/写指令void lcd_wcmd(uchar cmd)while(lcd_busy();/delay_ms(2);LCD_RS=0;LCD_RW=0;LCD_EN=0;_nop_();_nop_();P2=cmd;_nop_();_nop_();_nop_();_nop_();LCD_EN=1;_nop_();_nop_();_nop_();_nop_();LCD_EN=0;/写数

6、据void lcd_wdat(uchar dat)while(lcd_busy();/delay_ms(2);LCD_RS=1;LCD_RW=0;LCD_EN=0;_nop_();_nop_();P2=dat;_nop_();_nop_();_nop_();_nop_();LCD_EN=1;_nop_();_nop_();_nop_();_nop_();LCD_EN=0;/显示初始化void lcd_init()/delay_ms(15);lcd_wcmd(0 x38); /显示模式为16*2 5*7点阵 8位数据delay_ms(5);lcd_wcmd(0 x38);delay_ms(5);

7、lcd_wcmd(0 x01); /清屏delay_ms(5);lcd_wcmd(0 x06); /移动光标delay_ms(5);lcd_wcmd(0 x0c); /开光标delay_ms(5);void delay_ms(uint xms)uchar i,j;for(i=xms;i0;i-)for(j=110;j0;j-);void lcd_conv(uchar shi,fen,miao)dis_buf0=disshi/10;dis_buf1=disshi%10;dis_buf2=0 x3a;dis_buf3=disfen/10;dis_buf4=disfen%10;dis_buf5=0

8、x3a;dis_buf6=dismiao/10;dis_buf7=dismiao%10;void lcd_conv_year(uint year,uchar moon,day)dis_buf8=disyear/1000;dis_buf9=dis(year%1000)/100;dis_buf10=dis(year%100)/10;dis_buf11=disyear%10;dis_buf12=1;dis_buf13=dismoon/10;dis_buf14=dismoon%10;dis_buf15=2;dis_buf16=disday/10;dis_buf17=disday%10;dis_buf1

9、8=3;void lcd_dis()uchar i;lcd_conv(shi,fen,miao);lcd_conv_year(year,moon,day);lcd_wcmd(0 x00|0 x80);for(i=8;i19;i+)lcd_wdat(dis_bufi);lcd_wcmd(0 x40|0 x80);for(i=0;i8;i+)lcd_wdat(dis_bufi);/自定义字符图形void lcd_wCGROM()/将汉字写入CGROM uchar i,j;for(i=1;i4;i+)for(j=0;j5)flag=0;lcd_wcmd(0 x0c); /关光标delay_ms(1)

10、;TR0=1; if(key3=0)key_value=2; if(key4=0)key_value=3;while(key2=0|key3=0|key4=0); void keyprocess()switch(flag)case 1:if(key_value=2)shi+;if(shi23)shi=0;lcd_dis();lcd_wcmd(0 xc0+1);delay_ms(1);if(key_value=3)shi-;if(shi59)fen=0;lcd_dis();lcd_wcmd(0 xc0+4);delay_ms(1);if(key_value=3)fen-;if(fen9999)y

11、ear=2000;lcd_dis();lcd_wcmd(0 x80+3);delay_ms(1);if(key_value=3)year-;if(year12)moon=1;lcd_dis();lcd_wcmd(0 x80+6);delay_ms(1);if(key_value=3)moon-;if(moon29)day=1;if(moon=2&(year-2000)%4!=0)&day28)day=1;if(moon=1|moon=3|moon=5|moon=7|moon=8|moon=10|moon=12)&day31)day=1;if(moon=4|moon=6|moon=9|moon=

12、11)&day30)day=1;lcd_dis();lcd_wcmd(0 x80+9);delay_ms(1);if(key_value=3)day-;if(moon=2&(year-2000)%4=0)&day1)day=29;if(moon=2&(year-2000)%4!=0)&day1)day=28;if(moon=1|moon=3|moon=5|moon=7|moon=8|moon=10|moon=12)&day1)day=31;if(moon=4|moon=6|moon=9|moon=11)&day20)miao+; dingshi=0;if(miao59)miao=0;fen+;

13、if(fen59)fen=0;shi+;if(shi23)shi=0;year_moon_day();/年月日void year_moon_day()day+;if(year-2000)%4=0)leap=1;elseleap=0;if(day28) switch(moon) case 1:if(day31)day=1;break; case 2:if(leap=1) if(day29)day=1;moon+; else day=1;moon+; break; case 3:if(day31)day=1;moon+;break; case 4:if(day30)day=1;moon+;brea

14、k; case 5:if(day31)day=1;moon+;break; case 6:if(day30)day=1;moon+;break; case 7:if(day31)day=1;moon+;break; case 8:if(day31)day=1;moon+;break; case 9:if(day30)day=1;moon+;break; case 10:if(day31)day=1;moon+;break; case 11:if(day30)day=1;moon+;break; case 12:if(day31)day=1;moon+;break; if(moon12) moon=1; year+; if(year9999) year=2000; void display()/开机个性化显示uchar i;lcd_wcmd(0 x00|0 x80);i=0;while(i14)lcd_wdat(name1i);i+;lcd_wcmd(0 x40|0 x80);i=0;while(i8)lcd_wdat(name2i);i+;void main()