51单片机利用内部定时器做的万年历，Proteus仿真+程序 -

#include "reg52.h"
#include "LCD1602.h"
#include "stdio.h"
#include "math.h"
typedef struct {
int year;
unsigned char month;
unsigned char day;
unsigned char hour;
unsigned char min;
unsigned char sec;
} times_t; // 定义时间参数结构体
times_t times;
unsigned char strline1[16]="Date:0000-00-00";
unsigned char strline0[16]="Time:00-00-00";
unsigned char vTH , vTL , flagset = 0; //定时器参数
//判断年
int leapyear ( int year ) //判断传来的year是否为闰年//
{
if ( ( year % 4 == 0 ) && ( year % 100 != 0 ) || ( year % 400 == 0 ) ) {
return 0; //是闰年返回值0
} else
return 1; //不是闰年返回值1
}
//返回这个月一共有多少天
int days_of_month ( int year , unsigned char month )
{
//存储平年每月的天数
const int month_days [ 12 ] = { 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 };
if ( 2 == month && leapyear ( year ) )
return 29; // 如果是闰年2月，返回29天
else
return month_days [ month - 1 ]; //正常返回
}
int days_of_months ( int year , unsigned char month )
{
//存储平年每月的天数
const int month_days [ 12 ] = { 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 };
if ( 2 == month && leapyear ( year ) )
return 29; // 如果是闰年2月，返回29天
else
return month_days [ month - 1 ]; //正常返回
}
void Delayms ( unsigned int count ) //延时函数单位1ms
{
unsigned int i , j;
for ( i = 0; i < count ; i++ )
for ( j = 0; j < 120 ; j++ )
;
}
void DisLcdplayDate(void)
{
strline1 [ 5 ] = times.year / 1000 % 10+'0';
strline1 [ 6 ] = times.year / 100 % 10+'0';
strline1 [ 7 ] = times.year / 10 % 10+'0';
strline1 [ 8 ] = times.year % 10+'0';
strline1 [ 10 ] = times.month / 10 % 10+'0';
strline1 [ 11 ] = times.month % 10+'0';
strline1 [ 13 ] = times.day / 10 % 10+'0';
strline1 [ 14 ] = times.day % 10+'0';
}
void DisLcdplayTime(void)
{
strline0[5] = times.hour / 10 % 10+'0';
strline0[6] = times.hour % 10+'0';
strline0[8] = times.min / 10 % 10+'0';
strline0[9] = times.min % 10+'0';
strline0[11] = times.sec / 10 % 10+'0';
strline0[12] = times.sec % 10+'0';
}
void displayLcd(void)
{
DisLcdplayDate();
DisLcdplayTime();
if(flagset==0)
{
LCDPrint(0,0, strline0);
LCDPrint(0,1, strline1);
}
else if(flagset==1)
{
LCDPrint(2,0,"Set Year");
LCDPrint(0,1, strline1);
}
else if(flagset==2)
{
LCDPrint(2,0,"Set Month");
LCDPrint(0,1, strline1);
}
else if(flagset==3)
{
LCDPrint(2,0,"Set Day");
LCDPrint(0,1, strline1);
}
else if(flagset==4)
{
LCDPrint(2,0,"Set Hour");
LCDPrint(0,1, strline0);
}
else if(flagset==5)
{
LCDPrint(2,0,"Set Min");
LCDPrint(0,1, strline0);
}
else if(flagset==6)
{
LCDPrint(2,0,"Set Second");
LCDPrint(0,1, strline0);
}
}
void TimeRun ( void ) //定时器1s调用一次
{
if ( times.sec < 59 ) { //检测秒钟是否大于59
times.sec++;
} else {
times.sec = 0;
if ( times.min < 59 ) { //检测分钟是否大于59
times.min++;
} else {
times.min = 0;
if ( times.hour < 23 ) { //检测时大于大于23
times.hour++;
} else {
times.hour = 0;
if ( times.day < days_of_month ( times.year , times.month ) ) { //检测天数和年月有关
times.day++;
} else {
times.day = 1;
if ( times.month < 12 ) { //检测月是否大于12
times.month++;
} else {
times.month = 1;
times.year++;
}
}
}
}
}
}
sbit Key0 = P3 ^ 2; //按键定义
sbit Key1 = P3 ^ 3; //按键定义
sbit Key2 = P3 ^ 4; //按键定义
void KeyScan()
{
if ( Key0 == 0 ) { //设置按键按下总共5次
DelaymsLcd(10);
if ( Key0 == 0 ) {
if ( flagset < 6 )
flagset++;
else
flagset = 0;
LCD_Clear();
while ( Key0 == 0 )
;
}
}
if ( Key1 == 0 ) { //加操作
DelaymsLcd(10);
if ( Key1 == 0 ) {
if ( flagset == 1 ) //年加调节
times.year++;
if ( flagset == 2 ) { //月加调节
if ( times.month < 12 )
times.month++;
else
times.month = 1;
}
if ( flagset == 3 ) {//天加调节
if ( times.day < days_of_months ( times.year , times.month ) )
times.day++;
else
times.day = 1;
}
if ( flagset == 4 ) { //时加调节
if ( times.hour < 23 )
times.hour++;
else
times.hour = 0;
}
if ( flagset == 5 ) { //分加调节
if ( times.min < 59 )
times.min++;
else
times.min = 0;
}
if ( flagset == 6 ) { //分加调节
if ( times.sec < 59 )
times.sec++;
else
times.sec = 0;
}
while ( Key1 == 0 )
;
}
}
if ( Key2 == 0 ) { //减操作
DelaymsLcd(10);
if ( Key2 == 0 ) {
if ( flagset == 1 ) { //减年操作
if ( times.year > 0 )
times.year--;
}
if ( flagset == 2 ) { //月减操作
if ( times.month > 1 )
times.month--;
else
times.month = 12;
}
if ( flagset == 3 ) { //天减操作
if ( times.day > 1 )
times.day--;
else
times.day = days_of_months ( times.year , times.month );
}
if ( flagset == 4 ) { //时减操作
if ( times.hour > 0 )
times.hour--;
else
times.hour = 23;
}
if ( flagset == 5 ) { //分操作
if ( times.min > 0 )
times.min--;
else
times.min = 59;
}
if ( flagset ==6 ) { //分操作
if ( times.sec > 0 )
times.sec--;
else
times.sec = 59;
}
while ( Key2 == 0 )
;
}
}
}
void main ( )
{
int i;
times.year = 2019; //初始化时间
times.month = 12;
times.day = 12;
times.hour = 7;
times.min = 59;
times.sec = 53;
LCD_Init();
vTH = ( 65536 - 1000 ) / 256; //计数寄存器高8位
vTL = ( 65536 - 1000 ) % 256; //计数寄存器低8位
TH0 = vTH;
TL0 = vTL;
TMOD |= 0x01; //工作方式为16位定时器
ET0 = 0x01; //允许TC0中断
TR0 = 1;
EA = 1;
while ( 1 ) {
KeyScan();
displayLcd();
}
}
void Time0 ( void )interrupt 1
{
static int mil=0;
TH0=vTH;
TL0=vTL;
if(mil<999) //延时999ms
{
mil++;
}
else
{
mil=0;
if(flagset==0) TimeRun(); //1s调用一次
}
}

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