An Arduino library for communicating with real-time clock devices.

This library attempts to provide a user-friendly interface to the features of the DS I2C real-time clocks, specifically in such a manner than it can be reused with the [Arduino Time library] 1 ([project page] 2).

While the suppled example code worked well, it did not provide easy access to the extended features of the RTC chip (battery-backed RAM, temperature, alarms, etc).

Today, I'm concentrating on Maxim/Dallas I2C RTCs, as interfacing with them is similar across the entire IC line. Eventually, I'd like to include support for their SPI devices, as well as NXP's PCF lineup and TI's BQ series.