PCF8583 Real Time Clock and Event Counter Library for Arduino
You can read about this library in my blog post about Counting events with Arduino and PCF8583.
Thanks to Frederic Stuyk for testing the library and suggesting changes to make it more useful.
Copyright (C) 2013-2018 by Xose Pérez <xose dot perez at gmail dot com>
The PCF8583 library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
The PCF8583 library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with the PCF8583 library. If not, see http://www.gnu.org/licenses/.