The example sketch for the RTC shield shows how to set the time on the clock chip. It uses the date and time when the sketch was compiled, which is pretty close to the correct time (assuming the host computer's clock is accurate). But it will be a little bit behind because of the delay between compilation, uploading, and running the sketch.
Has anyone seen or written a pair of programs (host / Arduino) that would set the time from a program running on the host and communicating over the serial port to the Arduino?
I was imagining, say, a Processing sketch that would respond to a request from an Arduino sketch, get the system time and send it back to the Arduino, which could then update the DS1307 chip.
Before I write such a utility, I was wondering if anyone had done it already. I haven't seen anything in my searches.
Thx.
RTC : setting time from host PC
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kkinderen
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Re: RTC : setting time from host PC
No, but it would be handy. It would be nice to have the option to set the time to UTC regardless of the system time zone.
Please be positive and constructive with your questions and comments.