Re: gEDA-user: Check for same refdes

[Peter Kaiser <peter@xxxxxxxxxxxx>]

Wow, DRC2 is a great idea. I never looked at it before.

I think it's a good strategy to start implementing it in DRC. 

Later, if it works correct, we could transfer this test to other netlister.

Peter




Am Montag, 17. Januar 2005 18:06 schrieb Carlos Nieves Ónega:
> El lun, 17-01-2005 a las 00:49 +0100, Peter Kaiser escribió:
> > Thank's for the quick response. Here are my answers:
> >
> >
> > Am Montag, 17. Januar 2005 00:04 schrieb Stuart Brorson:
>
> [snip]
>
> > This is not a spice problem. We could approach the problem either in
> > - gnetlist with a warning or in
> > - gschem with a check or with a
> > - standalone script (DRC)
>
> Maybe it should be handled by the DRC. I think the user should run the
> DRC and check the schematic has no errors BEFORE running any other
> netlister (spice, PCB or whatever). It should avoid many headaches (like
> unnumbered refdes).
> Use the drc2 backend of gnetlist (gnetlist -g drc2 your_schematic.sch -o
> drc2_output.txt) and see the output file.
>
> > Is it possible to write a Scheme function to check for double refdes?
> > Than we should be able to call it from gschem and gentlist. Am I right?
>
> There's no gnetlist's function to get all (and not unique) refdeses. If
> you have C4 twice in your schematic, the list of parts in the schematic
> only contains one C4.
> If there were such function, here is what can be done:
> 	- Count how many times a refdes is in a schematic.
> 	- Count how many slots are used of this refdes.
> 	- DRC backend warns about duplicated slots, so if the two numbers
> aren't the same and there are no duplicated slots, then there are
> duplicated refdeses.
>
> I think this check can (and should) be done within the DRC backend...
>
> Carlos
>
>
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