ทดสอบ RTC DS3231 ด้วย Arduino Pro Mini

โมดูลนาฬิกา DS3231 module ความแม่นยำสูง RTC DS3231 AT24C32 IIC Module Precision Clock Module for Arduino DS3231 module  
บทความนี้แสดงการทดสอบ RTC DS3231 ด้วย Arduino Pro Mini  
การ Wiring 
1. GND ---- GND
2. VCC---- +5V
3. SDA----A4
4. SCL----A5 

Code 

// Date, Time and Alarm functions using a DS3231 RTC connected via I2C and Wire lib

#include

#include  // not used here, but needed to prevent a RTClib compile error

#include

RTC_DS3231 RTC;

void setup () {

    Serial.begin(57600);

    Wire.begin();

    RTC.begin();

  RTC.adjust(DateTime(__DATE__, __TIME__));

  if (! RTC.isrunning()) {

    Serial.println("RTC is NOT running!");

    // following line sets the RTC to the date & time this sketch was compiled

    RTC.adjust(DateTime(__DATE__, __TIME__));

  }

  DateTime now = RTC.now();

  RTC.setAlarm1Simple(21, 58);

  RTC.turnOnAlarm(1);

  if (RTC.checkAlarmEnabled(1)) {

    Serial.println("Alarm Enabled");

  }

}

void loop () {

    DateTime now = RTC.now();

    Serial.print(now.year(), DEC);

    Serial.print('/');

    Serial.print(now.month(), DEC);

    Serial.print('/');

    Serial.print(now.day(), DEC);

    Serial.print(' ');

    Serial.print(now.hour(), DEC);

    Serial.print(':');

    Serial.print(now.minute(), DEC);

    Serial.print(':');

    Serial.print(now.second(), DEC);

    if (RTC.checkIfAlarm(1)) {

      Serial.println("Alarm Triggered");

    }

    Serial.println();

    Serial.print("Tempeature = ");

    Serial.print(RTC.getTemperature());

    Serial.println(" C*");

    Serial.println("www.elec2you.com");

    Serial.println();

    delay(3000);

}

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