On Tue, 5 Jul 2011, Viesturs L?cis wrote:
> Date: Tue, 5 Jul 2011 17:11:34 +0300
> From: "[UTF-8] Viesturs L?cis" <viesturs.la...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] Reverse direction for stepgen on Mesa 7i43
>
> 2011/7/4 Peter C. Wallace <p...@mesanet.com>:
>> In HostMot2, outputs are inverted by
>> setting the invert_output attribute of the proper GPIO bit.
>
> Got stuck with this - how do I specify that I want to invert direction
> bit of a particular stepgen? That is not a GPIO bit and I do not see
> any related pin anywhere in HAL (looked in Show HAL configuration).
> In my HAL file stepgen pins are syntaxed like this:
> hm2_[HOSTMOT2](BOARD).0.stepgen.nn.xxx
> where nn - number of stepgen, xxx - name of pin (position-cmd or
> position-fb etc.)
> What is correct syntax for assessing output of direction?
>
> Viesturs
The .pin file (the configuration specific pinout documentation file) will
have the stepgen/GPIO correspondence.
Even though the stepgen outputs (or any hardware module output for that
matter) are not GPIO bits, they are still controlled by two GPIO parameter
settings: is_opendrain, and invert_output.
The is_output parameter is automatically set true for _enabled_ hardware
modules and AFAIK not exposed to the HAL interface.
>
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Peter Wallace
Mesa Electronics
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All of the data generated in your IT infrastructure is seriously valuable.
Why? It contains a definitive record of application performance, security
threats, fraudulent activity, and more. Splunk takes this data and makes
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2d-c2
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