On 18 May 2014 17:25, Marius Liebenberg <[email protected]> wrote:
> Hi Steve
> Thanks for the all helpfull information. The problem am working is that
> the parport driver for linuxcnc does not deal with the control port as a
> bi-directional port. I have to change the way the driver sets itself up
> and conducts the read and write operations. Also, HAL does not allow you
> to connect an OUTPUT pin to an IO or other OUTPUT pin.

I think that things would be a lot simpler if you ignored IO pins and
created both an input and an output pin for each IO pin.

I think that the hostmot2 driver works this way, you can (for example)
read stepgen outputs as inputs.

-- 
atp
If you can't fix it, you don't own it.
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