Does anyone know if there is a simple packaged solution to getting
access to GPIO that so many motherboards seem to carry these days (with
almost no other information).

I am only really interested in being able to read the state of the
pins from userspace, although some sort of interrupt control would be
really nice).

-- 
Will J G

Folderol wrote:

> Does anyone know if there is a simple packaged solution to getting
> access to GPIO that so many motherboards seem to carry these days (with
> almost no other information).

Many of them are supported by lm_sensors

http://www.lm-sensors.org/

If not you can easily modify a similar driver if you have the datasheet for
the chip.

        Simon

On Mon, 26 May 2008 12:19:16 +0100
"Simon J. Rowe"  wrote:

> Folderol wrote:
> 
> > Does anyone know if there is a simple packaged solution to getting
> > access to GPIO that so many motherboards seem to carry these days (with
> > almost no other information).
> 
> Many of them are supported by lm_sensors
> 
> http://www.lm-sensors.org/
> 
> If not you can easily modify a similar driver if you have the datasheet for
> the chip.
> 
>         Simon
> 
I followed this link, but could only find references to sensors, not to
user accessible GPIO. Is there something I am missing?

-- 
Will J G

Folderol wrote:

> I followed this link, but could only find references to sensors, not to
> user accessible GPIO. Is there something I am missing?

The GPIO lines typically hang off a super I/O chip, one function is to
support sensors. If you install lm_sensors, run sensors-detect to set it
and then look at what the chip it reports you have. If you're lucky you'll
be able to access the GPIO lines via sysfs. If not, how's your coding?...

        Simon

On Tue, 27 May 2008 20:59:19 +0100
"Simon J. Rowe"  wrote:

> Folderol wrote:
> 
> > I followed this link, but could only find references to sensors, not to
> > user accessible GPIO. Is there something I am missing?
> 
> The GPIO lines typically hang off a super I/O chip, one function is to
> support sensors. If you install lm_sensors, run sensors-detect to set it
> and then look at what the chip it reports you have. If you're lucky you'll
> be able to access the GPIO lines via sysfs. If not, how's your coding?...
> 
>         Simon

I was rather hoping for something more of a plugin like the python
serial & parallel wrappers. I guess I've got rather spoiled by the fact
that modern distros seem to automagically identify just about
everything!

I don't have anything like the skill needed for writing drivers :(

-- 
Will J G

Folderol wrote:

> I was rather hoping for something more of a plugin like the python
> serial & parallel wrappers. I guess I've got rather spoiled by the fact
> that modern distros seem to automagically identify just about
> everything!
> 
> I don't have anything like the skill needed for writing drivers

If your motherboard has a parallel port then you can use that for I/O.

        Simon

On Sat, 31 May 2008 20:09:17 +0100
"Simon J. Rowe"  wrote:

> Folderol wrote:
> 
> > I was rather hoping for something more of a plugin like the python
> > serial & parallel wrappers. I guess I've got rather spoiled by the fact
> > that modern distros seem to automagically identify just about
> > everything!
> > 
> > I don't have anything like the skill needed for writing drivers
> 
> If your motherboard has a parallel port then you can use that for I/O.
> 
>         Simon

I do have a parallel port on one machine, but I'm reluctant to rely on
it too much, as these are becoming steadily more rare with each new
generation of MBOs. Also (and I could quite possibly be wrong) I get
the impression that GPIO gives faster access.

-- 
Will J G