View source for Setting Time and Date for the DS3231 RTC

[[File:DS3231.PNG |200px|right]]

'''Setting up the DS3231 RTC'''
  DS3231 RTC Datasheet: https://datasheets.maximintegrated.com/en/ds/DS3231.pdf
  Insert a coin cell battery into DS3231. 
  Either a CR2032 or LI2032 coin cell battery will work.
  Insert '''DS3231 module''' into the '''Power Logger PCB''' at J5. 
'''Download the Drivers'''
  The '''ds3231.h''' library can be downloaded from https://github.com/rodan/ds3231.
  Create a folder in Documents called Power-Fail-logger.
  Download and Save '''ds3231-master.zip''' to that folder.
  Install the Zip file by clicking on the '''Sketch''' Tab in the '''Arduino IDE'''. 
  Select '''Include library'''.   
  Select '''Add .ZIP Library...'''
  
  Ensure sure you have added these two libraries to the Arduino environment. 
 '''Wire.h'''  
 '''ds3231.h''' 
'''Validate the libraries are installed''' 
  Click the '''Sketch''' Tab
  Select '''Include library'''.
  The libraries will be listed 
  '''Arduino libraries'''      (Wire) 
  '''Contributed Libraries.''' (ds3231-master)
 

To Set the date and time use the follow program and paste in the '''Arduino IDE'''.<br>

----
  // '''DS3231-Set-Time-Date.ino'''
  //This code can be found here:https://github.com/rodan/ds3231
  #include <Wire.h>    '''//Make sure you have added this library to the Arduino environment'''
  #include <ds3231.h>  '''//Make sure you have added this library to the Arduino environment'''
  struct ts t; 
  void setup() {
  Serial.begin(9600);
  Wire.begin();
  DS3231_init(DS3231_CONTROL_INTCN);
  /*----------------------------------------------------------------------------
  '''In order to synchronize your clock module, insert timetable values below !'''
  ----------------------------------------------------------------------------*/
  t.hour=20;      //Set the hour in military time to your current time. 
  t.min=40;       //Set the minutes. 
  t.sec=0;        //No need to change   
  t.mday=11;      //Set the Day
  t.mon=4;        //Set the Month
  t.year=2021;    //Set the Year
  DS3231_set(t);  //Comment this line out after setting RTC with time & date to validate
  }
 
  void loop() {
  DS3231_get(&t);
  Serial.print("Date : ");
  Serial.print(t.mon);
  Serial.print("/");
  Serial.print(t.mday);
  Serial.print("/");
  Serial.print(t.year);
  Serial.print("\t Hour : ");
  Serial.print(t.hour);
  Serial.print(":");
  Serial.println(t.min);
  Serial.print(":");
  Serial.println(t.sec);
  delay(60000);
  }
  void print2digits(int number){
  if (number >= 0 && number < 10) {
    Serial.write ('0');
  }
  Serial.print(number);
  } 
----
'''Set up Programmer'''
  Connect the '''USBTinyISP''' to the '''AVR-ISP-6 pin header J7''' on the '''Power Fail Logger PCB'''.
  In the '''Arduino IDE''' click on '''Tools''' Tab - Select '''Programmer''' then select '''USBTinyISP'''.<br>
'''Select correct target board'''
  In the '''Arduino IDE''' click on '''Tools''' Tab - Select '''Board''' then select the '''Arduino Uno'''.<br>
'''Connect Serial Port to the RS232 Port''' 
  Plug into your laptop USB port the '''Prolific USB-to-Serial Comm Port''' 
  Connect the '''Prolific USB-to-Serial Comm Port''' to the '''RS232 Port''' on the Power Fail Board 
  Connect the '''TX''', '''RX''', and '''Ground''' Pins to '''J4'''.
          Prolific         J4 Power Logger
              TX      -    RX
              RX      -    TX
              GND     -    GND
  Use Windows '''Device Manager''' to validate which Comm Port is used. You will need this later.
  In the '''Arduino IDE''' click on '''Tools''' Tab - Select '''Port''' then select the '''Prolific Port''' (Example Comm6).<br>

'''Flash the Microcontroller''' with DS3231-Set-Time-Date Program
  Paste the above program '''DS3231-Set-Time-Date.ino''' into the '''Arduino IDE'''.
  After changing the time stamp in the program to match your current time do the following:
  In the '''Arduino IDE''' click on '''Sketch''' Tab - Select '''Upload Using Programmer'''
  
'''Validate the clock is set'''  
  After program has uploaded go back and comment out the '''DS3231_set(t);''' statement. 
  Validate by reprograming the board with that line commented out.
  Use the same programming steps as stated above. <br>  
  In the Arduino IDE click on '''Tools''' Tab - Select '''Serial Monitor'''<br>
  Once the program has finished loading hit the Reset button on the Power Fail Logger Board.
  You should see the correct time and date display in the Serial Monitor. 
  It will update and display the time once a minute

Next Step click on link below '''Programming Power Fail Logger with Arduino IDE''' with Power-Fail-Logger Program
==[[ Power Fail Logger by Microrusty ]]==
==[[Initializing the Microcontroller]]== 
==[[Setting Time and Date for the DS3231 RTC]]== 
==[[ Programming Power Fail Logger with Arduino IDE]]==
==[[Installation and use]]==
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==[[ Main Page ]]==