DS3231 RTC Library For Arduino

The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.

Datasheet

Set Date and Time by passing structure variable.
Set Date and Time by passing date as string and time as string.
It can keep date from 1900 till 2099.
Time can be set both in 12 and 24 Hour format
Seconds, Minutes, Hour, Day, Date, Month and Year can be set seperately.
Validation for Seconds, Minutes, Hour, Day, Date, Month and Year
Read current Date and Time
Set Alarm1 matching every seconds / minutes / hour OR Alarm2 matching every minute / hour
Set Alarm1 matching for exact seconds / minutes / hour with time format and meridian OR Alarm2 matching for exact minutes / hour with time format and meridian
Set Alarm1 matching seconds and minutes
Set Alaram1 matching seconds, minutes and hour OR Alarm2 matching minutes and hour
Set Alarm1 matching day / date with hour, minutes and seconds OR Alarm2 matching day / date with hour, minutes
Enable Alarm1 / Alarm2
Disable Alarm1 / Alarm2
Get Alarm1 / Alarm2 status
Get Alarm1 / Alarm2 configured time
Get Temperature in Celsius / Fahrenheit / Kelvin scale
Convert Temperature
Get Control Register value
Enable / Disable Oscillator
Get Oscillator status
Enable / Disable BBSQW
Get BBSQW status
Get INTCN status
Get Status Register value
Get OSF status
Enable / Disable 32Khz
Get 32Khz status
Get BSY status
Get Aging Register value
Set Aging Register value

Download zip archive from the github repository at https://github.com/himadriganguly/Himadri_DS3231.
Copy folders Himadri_DS3231 from the zip archive into Arduino libraries folder on your computer. Arduino folder is e.g. My Documents\Arduino\libraries on Windows or Documents/Arduino/libraries on Linux and Mac.

If you want to contribute to this project by enhancing its features please create a pull request and I will do my best to merge it appropriately.