RTC for A10-Lime

Started by jerry, February 04, 2014, 11:30:07 pm

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jerry

Has anyone added a RTC to the A10-Lime?  It doesn't look like there is one on the board (although I may be wrong).

oldpenguin

February 05, 2014, 09:35:28 pm #1 Last Edit: February 06, 2014, 11:25:12 am by oldpenguin
Hello

I am missing the RTC too.
I've been testing A10 RTC + LiPo battery to keep the date, and it seems to work ok: the date is kept when the board is halted.
If you don't mind adding a small battery it can be a solution.
You must make sure you halt the board when main power goes out to avoid draining the battery.
Regards
António


jerry

@oldpenguin,

Sorry for the delay - I forgot this board doesn't send emails on updates :(

The MOD-RTC looks interesting; do you know if it's supported by Linux (Debian, preferably)?

TIA,
Jerry

oldpenguin

Hello Jerry

MOD-RTC should work. The problem is that there is no UEXT socket on LIME. So you have to get this

https://www.olimex.com/Products/OLinuXino/A10/A10-OLinuXino-LIME-UEXT

and this

https://www.olimex.com/Products/Components/Cables/CABLE-40-40-10CM

I tested MOD-RTC with an A13 board and it works fine with plain i2c-tools package. So it should also work with A10.

Regards

António

jerry

Antonio,

Thanks for the info.  The extra hardware isn't a real problem but having to write another device driver for it would be.

Jerry