51单片机LCD数字时钟（程序+仿真）

#include "common.h" #include "lcd1602.h" #include "timer.h" sbit key_s1 = P1^0 ; sbit key_s2 = P1^1 ; sbit key_s3 = P1^2 ; sbit key_s4 = P1^3 ; sbit bellControl = P3^7 ; typedef struct { int year ; char month ; char date ; char day ; char hour ; char minute ; char second ; }time_info ; time_info time = {2024,1,9 ,00,12,00} ; time_info clock = {2024,1,9 ,4,12,00,05} ; //闹钟时间 char flag1 = 0 ; char flag2= 0 ; /*指示当前按下设置按键s1的次数*/ char flag3 = 0 ; /*闹钟标志位*/ void timeDisplay(void) ; /*时间数据更新、显示*/ void keyscanf(void) ; /*按键扫描*/ void systemInit(void) ; /*（液晶屏、定时器的初始化)*/ void checkClock(void) ; /*检测闹钟时间*/ void nzdelay(void); void bell(void) ; void delay(unsigned long time) { unsigned long x,y ; for(x=time ; x ; x--) { for(y=110 ; y ; y --) { ; } } } void main(void) { systemInit() ; while(1) { keyscanf(); if(changeFlag) /*如果1s的时间到了*/ { changeFlag = 0 ; timeDisplay() ; } checkClock() ; } } void systemInit(void) /*系统初始化(液晶屏、定时器的初始化)*/ { timerInit() ; lcd1602Init() ; lcd1602AddressWriteString(LCD1602_ROW0,5,"") ; lcd1602AddressWriteString(LCD1602_ROW1,0,"") ; delay(1000) ; lcd1602CleanAll() ; lcd1602AddressWriteByte(LCD1602_ROW0,1,time.year/1000+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,2,time.year%1000/100+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,3,time.year%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,4,time.year%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,5,'-') ; lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,8,'-') ; lcd1602AddressWriteByte(LCD1602_ROW0,9,time.date%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,10,time.date%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,13,time.day%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,2,time.hour/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,3,time.hour%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,4,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,5,time.minute/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,6,time.minute%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,7,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,8,time.second/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,9,time.second%10+'0') ; } void timeDisplay(void) { if(60 == ++time.second) { time.second = 0 ; if(60 == ++time.minute) { time.minute = 0 ; if(24 == ++time.hour) { time.hour = 0; if(8 == ++time.day) { time.date = 1 ; } lcd1602AddressWriteByte(LCD1602_ROW0,13,time.day%10+'0') ; ++time.date ; if( (time.month == 1) || (time.month == 3) || (time.month == 5) || \ (time.month == 7) || (time.month == 8) || (time.month == 10) ||\ (time.month == 12)) { if(time.date ==32) { time.date = 1 ; ++time.month ; if(time.month == 13) { time.month = 1; ++time.year ; lcd1602AddressWriteByte(LCD1602_ROW0,1,time.year%10000/1000+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,2,time.year%1000/100+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,3,time.year%10/100+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,4,time.year%10+'0') ; } lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; } } else if ( (time.month == 4) || (time.month == 6) || (time.month == 9) || \ (time.month == 11)) { if(time.date ==31) { time.date = 1 ; ++time.month ; if(time.month == 12) { time.month = 1; } lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; } } else if ( ((time.year%4 ==0) && (time.year %100 !=0)) || \ time.year%400 == 0) {/*闰年2月参数设置*/ if(time.date ==30) { time.date = 1 ; ++time.month; lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; } } else {/*平年2月参数设置*/ if(time.date ==29) { time.date = 1 ; ++time.month ; lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; } } lcd1602AddressWriteByte(LCD1602_ROW0,9,time.date/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,10,time.date%10+'0') ; } if(!flag3)/*不是闹钟模式，显示当前时间*/ { lcd1602AddressWriteByte(LCD1602_ROW1,2,time.hour/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,3,time.hour%10+'0') ; } } if(!flag3) { lcd1602AddressWriteByte(LCD1602_ROW1,5,time.minute/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,6,time.minute%10+'0') ; } } if(!flag3) { lcd1602AddressWriteByte(LCD1602_ROW1,8,time.second/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,9,time.second%10+'0') ; } } void keyscanf(void) /*按键扫描*/ { if( !key_s1 ) { delay(10) ; if( !key_s1 ) { flag1 = 1 ; ++flag2 ; /*设置按键次数自加一次*/ if(4 == flag2)/*调整年*/ { TR0 = 0 ;/*停止实时时钟的走动*/ lcd1602CleanAll() ; lcd1602AddressWriteByte(LCD1602_ROW0,1,time.year/1000+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,2,time.year%1000/100+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,3,time.year%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,4,time.year%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,5,'-') ; lcd1602AddressWriteByte(LCD1602_ROW0,6,time.month%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,7,time.month%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,8,'-') ; lcd1602AddressWriteByte(LCD1602_ROW0,9,time.date%100/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,10,time.date%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW0,13,time.day%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,2,time.hour/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,3,time.hour%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,4,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,5,time.minute/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,6,time.minute%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,7,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,8,time.second/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,9,time.second%10+'0') ; } if((flag2==1) ||(flag2==11))/*设置闹钟，先显示闹钟参数*/ { if(flag2 == 11) flag2 = 0 ; flag3 = 1;/*设置闹钟模式标志位*/ lcd1602CleanAll() ; lcd1602AddressWriteString(LCD1602_ROW0,1,"Clock Setting") ; lcd1602AddressWriteByte(LCD1602_ROW1,2,clock.hour/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,3,clock.hour%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,4,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,5,clock.minute/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,6,clock.minute%10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,7,':') ; lcd1602AddressWriteByte(LCD1602_ROW1,8,clock.second/10+'0') ; lcd1602AddressWriteByte(LCD1602_ROW1,9,clock.second%10+'0') ; } while(!key_s1) ; /*松手检测*/ } } if(flag1) { lcd1602WriteCommand(0x0f) ;/*设置光标显示、光标闪烁*/ switch(flag2) /*光标显示位置*/ { case 1: lcd1602WriteCommand(0x80+0x40+3); break ; case 2: lcd1602WriteCommand(0x80+0x40+6); break ; case 3: lcd