On 16 March 2014 14:15, Michael Haberler <mai...@mah.priv.at> wrote:
> sure - with the consequence that you cannot connect a modified scale with an 
> IO pin to the pid comp and have the proper semantics for initialisation of 
> the scale with the current value as used by pid

That's still a bit awkward anyway, as you have to make sure that your
HAL does the setp of the initial PID gains from the INI before it nets
your new bidirectional scale widget, otherwise the setp will fail.
(You can sets the signal from the HAL, I guess. )

The other alternative is a scale with an initvalue input pin that can
be "setp"-ed by the HAL file, and a pure output pin to drive a pure
input pin on the PID.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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