Re: [Gumstix-users] i2c precompiled module versions

[Dave H. <dhy...@gm...>]

Hi Scott,

On Thu, Aug 19, 2010 at 3:51 AM, ScottEllis
<sco...@gm...> wrote:
>
> I think you found the wrong wiki page. Try this.
>
> http://www.gumstix.net/wiki/index.php?title=Category:How_to_-_i2c
>
> The I2C bus found on the Overo expansion board headers can be accessed
> solely from userland as a character device using the standard gumstix overo
> kernels.

Well that's not quite true. You can also use the i2c bus from
kerneland - it's just a totally different API.

> You will need to write some code in order to make the IOCTL call to specify
> the I2C_SLAVE address.
>
> You do not have to build a full gumstix image in order to get the tools to
> compile simple i2c C programs, but you will need some cross-tools built on a
> workstation. Alternatively you can install some native build tools directly
> onto your gumstix.

I seem to recall that the i2c-tools package is installed by default
(but I'm going from a fairly hazy memory which might be incorrect).

See this message from the archives for some examples:
<http://thread.gmane.org/gmane.linux.distributions.gumstix.general/50580/focus=50594>

Hmm. Seems like the examples would be worth adding to the Wiki page.

-- 
Dave Hylands
Shuswap, BC, Canada
http://www.DaveHylands.com/