arduino电子钟程序

ID:155430 · 发表于 2016-12-17 14:49

/* * LCD RS pin to digital pin 12
* LCD Enable pin to digital pin 11
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2
* LCD R/W pin to ground
* LCD VSS pin to ground
* LCD VCC pin to 5V  */
#include <LiquidCrystal.h>    //LCD1602显示头文件
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
unsigned long seconds;
int  s = 0, m = 0, h = 0, d = 0, mon = 0, y = 0; //时间进位
int  second = 0, minute = 0, hour = 0, day = 0, month = 0, year = 0;  //当前时间
int  SECOND = 0, MINUTE = 0, HOUR = 0, DAY = 0, MONTH = 0, YEAR = 0;  //初始时间
void setup()
{
  lcd.begin(16, 2);
  lcd.setCursor(2, 1); lcd.print(":");
  lcd.setCursor(5, 1); lcd.print(":");
  lcd.setCursor(4, 0); lcd.print('-');
  lcd.setCursor(7, 0); lcd.print('-');
  for(int i = 2;i <= 13; i++)
  {
pinMode(i,OUTPUT);
  }
  set(2015,5,15,22,19,32);  //设置初始时间
}

void FormatDisplay(int col, int row,int num) //格式化输出
{
  lcd.setCursor(col, row);
  if(num < 10) lcd.print("0");
  lcd.print(num);
}
void time() //计算时间
{
   second = ( SECOND + seconds ) % 60; //计算秒
   m = ( SECOND + seconds ) / 60;       //分钟进位
   FormatDisplay(6,1,second);

   minute = ( MINUTE + m ) % 60;  //计算分钟
   h = ( MINUTE + m ) / 60;    //小时进位
   FormatDisplay(3,1,minute);

   hour = ( HOUR + h ) % 24; //计算小时
   d = ( HOUR + h ) / 24;    //天数进位
   FormatDisplay(0,1,hour);
}

int Days(int year, int month) //根据年月计算当月天数
{
int days = 0;
if (month != 2)
{
   switch (month)
   {
      case 1: case 3: case 5: case 7: case 8: case 10: case 12: days = 31;  break;
      case 4: case 6: case 9: case 11:  days = 30;  break;
   }
}
else //闰年
{
   if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) days = 29;
   else days = 28;
}
return days;
}

void Day() //计算当月天数
{
int days = Days(year,month);
int days_up;
if( month == 1 ) days_up = Days( year - 1, 12 );
else  days_up = Days( year, month - 1 );
day = ( DAY + d ) % days;
if( day == 0 ) day = days;
if( ( DAY + d ) == days + 1 )
{
   DAY -= days;
   mon++;
}
if(( DAY + d ) == 0)
{
   DAY += days_up;
   mon--;
}
FormatDisplay(8,0,day);
}

void Month() //计算月份
{
month = ( MONTH + mon ) % 12;
if( month == 0 )  month = 12;
y = ( MONTH + mon - 1) / 12;
FormatDisplay(5,0,month);
}

void Year() //计算年份
{
year = ( YEAR + y ) % 9999;
if( year == 0 ) year = 9999;
lcd.setCursor(0, 0);
if(year < 1000)  { lcd.print("0"); }
if(year < 100) { lcd.print("0"); }
if(year < 10) { lcd.print("0"); }
lcd.print(year);
}

void Week(int y,int m, int d)  //根据年月日计算星期几
{
if(m==1) m=13;
if(m==2) m=14;
int week=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400)%7+1;
String weekstr="";
switch(week)
   {
      case 1: weekstr="Mon. "; break;
      case 2: weekstr="Tues. ";  break;
      case 3: weekstr="Wed. "; break;
      case 4: weekstr="Thur. ";  break;
      case 5: weekstr="Fri. "; break;
      case 6: weekstr="Sat. "; break;
      case 7: weekstr="Sun. "; break;
   }
lcd.setCursor(11, 0);
lcd.print(weekstr);
}

void set(int y, int mon, int d, int h, int m, int s)
{
  YEAR = y;
  MONTH = mon;
  DAY = d;
  HOUR = h;
  MINUTE = m;
  SECOND = s;
}

void Display()  //显示时间、日期、星期
{
  time();
  Day();
  Month();
  Year();
  Week(year,month,day);
}

void loop()
{
seconds = millis()/1000;
Display();
}

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arduino电子钟程序

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