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Mail Archives: geda-user/2016/08/02/16:48:25

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From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Tue, 2 Aug 2016 16:47:05 -0400
Message-ID: <CAM2RGhSxV=-czyN-vNRRzy8r1OErBcYSdT+uZ=-R86bsWyRcdg@mail.gmail.com>
Subject: Re: [geda-user] Wilkinson splitter - how to implement and use?
To: gEDA users mailing list <geda-user AT delorie DOT com>
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On Mon, Aug 1, 2016 at 6:44 PM, Erich Heinzle (a1039181 AT gmail DOT com)
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> If pcb were modified to honour the flag, I could easily add a "nodrc" flag
> as discussed to the non-pad line element outputs of the utility.

I think we need something more subtle than nodrc. Having DRC turned
off for a specific footprint or any other board area is just as bad as
having DRC return bogus warnings/errors.

The reality is that these structures are not footprints but functional
elements. They have design rules, just very different ones with higher
orders of complexity. We can't really have pcb process the full
complexity of these rules across the whole domain from DC to daylight
(or shorter) because of limitations in processing. It would also
require a level of developer time which is far past what pcb-* has
right now.

We need the ability to code plugins for DRC so we can tell pcb what
design rules to use and when. The set there are there right now are
good and should stay but you should be able to tag things as using one
drc plugin or the other.

> An interim hack would be to modify the utility to optionally generate the
> non pad elements as Symbolline elements, i.e. a "text symbol", and allocate
> the resulting element to a spare text symbol in the PCB file, which would be
> overlaid on the pads, since recent comments on the mailing list seemed to
> indicate that text on copper was ignored for DRC purposes. This would get
> tedious for multiple power dividers of different dimensions on the one
> board, however.
>
> Regards,
>
> Erich.
>
> On Tue, Aug 2, 2016 at 5:30 AM, DJ Delorie <dj AT delorie DOT com> wrote:
>>
>>
>> > Can we please work towards more orthogonality?
>>
>> Go right ahead :-)
>
>



-- 
Home
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Work
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