On 7 April 2011 15:11, Michael Abel <[email protected]> wrote:

> There is an overview [4] but it seems to be relatively old. Is this one
> still relevant or does somebody already have a newer version of this
> overview?

It doesn't include the Hardware Abstraction Layer, so from the point
of view if what you are attempting to do (which would almost certainly
be a realtime HAL component) that diagram is almost no help at all.

This page:
http://linuxcnc.org/docs/html/hal_basic_hal.html
Might be useful. You would probably be writing a module like those
described near the end of that section. You might want to do it in
comp:
http://linuxcnc.org/docs/html/hal_comp.html
But it is possible that comp might be too limited for your application.

This device: http://www.poscope.com/product.php?pid=27 might be a
useful development "mule"

-- 
atp
"Torque wrenches are for the obedience of fools and the guidance of wise men"

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