Subversion Repositories idreammicro-arduino

// Simple date conversions and calculations

#include <Wire.h>

#include "RTClib.h"

void showDate(const char* txt, const DateTime& dt) {

    Serial.print(txt);

    Serial.print(' ');

    Serial.print(dt.year(), DEC);

    Serial.print('/');

    Serial.print(dt.month(), DEC);

    Serial.print('/');

    Serial.print(dt.day(), DEC);

    Serial.print(' ');

    Serial.print(dt.hour(), DEC);

    Serial.print(':');

    Serial.print(dt.minute(), DEC);

    Serial.print(':');

    Serial.print(dt.second(), DEC);

    Serial.print(" = ");

    Serial.print(dt.unixtime());

    Serial.print("s / ");

    Serial.print(dt.unixtime() / 86400L);

    Serial.print("d since 1970");

    Serial.println();

}

void setup () {

    Serial.begin(57600);

    DateTime dt0 (0, 1, 1, 0, 0, 0);

    showDate("dt0", dt0);

    DateTime dt1 (1, 1, 1, 0, 0, 0);

    showDate("dt1", dt1);

    DateTime dt2 (2009, 1, 1, 0, 0, 0);

    showDate("dt2", dt2);

    DateTime dt3 (2009, 1, 2, 0, 0, 0);

    showDate("dt3", dt3);

    DateTime dt4 (2009, 1, 27, 0, 0, 0);

    showDate("dt4", dt4);

    DateTime dt5 (2009, 2, 27, 0, 0, 0);

    showDate("dt5", dt5);

    DateTime dt6 (2009, 12, 27, 0, 0, 0);

    showDate("dt6", dt6);

    DateTime dt7 (dt6.unixtime() + 3600); // one hour later

    showDate("dt7", dt7);

    DateTime dt8 (dt6.unixtime() + 86400L); // one day later

    showDate("dt8", dt8);

    DateTime dt9 (dt6.unixtime() + 7 * 86400L); // one week later

    showDate("dt9", dt9);

}

void loop () {

}