62 lines
1.8 KiB
Arduino
62 lines
1.8 KiB
Arduino
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// Date and time functions using just software, based on millis() & timer
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#include <Arduino.h>
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#include <Wire.h> // this #include still required because the RTClib depends on it
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#include "RTClib.h"
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#if defined(ARDUINO_ARCH_SAMD)
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// for Zero, output on USB Serial console, remove line below if using programming port to program the Zero!
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#define Serial SerialUSB
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#endif
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RTC_Millis rtc;
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void setup () {
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Serial.begin(57600);
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// following line sets the RTC to the date & time this sketch was compiled
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rtc.begin(DateTime(F(__DATE__), F(__TIME__)));
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// This line sets the RTC with an explicit date & time, for example to set
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// January 21, 2014 at 3am you would call:
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// rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
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}
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void loop () {
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DateTime now = rtc.now();
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Serial.print(now.year(), DEC);
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Serial.print('/');
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Serial.print(now.month(), DEC);
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Serial.print('/');
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Serial.print(now.day(), DEC);
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Serial.print(' ');
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Serial.print(now.hour(), DEC);
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Serial.print(':');
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Serial.print(now.minute(), DEC);
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Serial.print(':');
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Serial.print(now.second(), DEC);
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Serial.println();
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Serial.print(" seconds since 1970: ");
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Serial.println(now.unixtime());
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// calculate a date which is 7 days and 30 seconds into the future
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DateTime future (now.unixtime() + 7 * 86400L + 30);
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Serial.print(" now + 7d + 30s: ");
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Serial.print(future.year(), DEC);
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Serial.print('/');
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Serial.print(future.month(), DEC);
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Serial.print('/');
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Serial.print(future.day(), DEC);
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Serial.print(' ');
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Serial.print(future.hour(), DEC);
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Serial.print(':');
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Serial.print(future.minute(), DEC);
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Serial.print(':');
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Serial.print(future.second(), DEC);
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Serial.println();
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Serial.println();
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delay(3000);
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}
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