Diferencia entre revisiones de «DateTime»

DateTime t0 (2018,7,14,8,0,0);           //2018-7-14 8:00:00
//Calculos 1
DateTime t1 = t0 + TimeSpan(0,1,0,0);    //Añadir una hora
DateTime t2 = t0 + TimeSpan(1,0,0,0);    //Añadir un dia
DateTime t3 = t0 - TimeSpan(7,0,0,0);    //Restar una semana
//Calculos 2
DateTime unix = t0.unixtime();           //1531555200
DateTime t1 (t0.unixtime() + 3600);      //Añadir una hora
DateTime t2 (t0.unixtime() + 86400L);    //Añadir un dia
DateTime t3 (t0.unixtime() - 7*86400L);  //Restar una semana
//Mostrar
Serial.print(t0.unixtime());             //1531555200
Serial.print(t0.year());                 //2018
Serial.print(t0.month());                //7
Serial.print(t0.day());                  //14
Serial.print(t0.hour());                 //8
Serial.print(t0.minute());               //0
Serial.print(t0.second());               //0

#include <Wire.h>
#include <RTClib.h>

RTC_Millis rtc;     //Reloj por software
//RTC_DS1307 rtc;   //Reloj con DS1307
//RTC_DS3231 rtc;   //Reloj con DS3231

char daysOfTheWeek[7][12] = {"Domingo", "Lunes", "Martes", "Miercoles", "Jueves", "Viernes", "Sabado"};

void setup () {
   Serial.begin(57600);
   //Para setear RTC con fecha y hora cuando se compila
   rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
   //Para setear RTC a 21-MAR-2019 8:00:00
   //rtc.adjust(DateTime(2019, 3, 21, 8, 0, 0));
}

void loop () {
    DateTime now = rtc.now();
    
    Serial.print(now.year());
    Serial.print('/');
    Serial.print(now.month());
    Serial.print('/');
    Serial.print(now.day());
    Serial.print(" (");
    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
    Serial.print(") ");
    Serial.print(now.hour());
    Serial.print(':');
    Serial.print(now.minute());
    Serial.print(':');
    Serial.println(now.second());
    
    Serial.print("Desde 1-ENE-1970 = ");

    Serial.print("Segundos = ");
    Serial.println(now.unixtime());

    Serial.print("Dias = ");
    Serial.println(now.unixtime() / 86400L);
    
    //calculate a date which is 7 days and 30 seconds into the future
    DateTime future (now + TimeSpan(7,12,30,6));
    
    Serial.print(" now + 7d + 30s: ");
    Serial.print(future.year());
    Serial.print('-');
    Serial.print(future.month());
    Serial.print('-');
    Serial.print(future.day());
    Serial.print(' ');
    Serial.print(future.hour());
    Serial.print(':');
    Serial.print(future.minute());
    Serial.print(':');
    Serial.print(future.second());
    Serial.println();
    
    Serial.println();
    delay(3000);
}