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	Sun, 18 Oct 2015 16:24:34 -0700 (PDT)
Date:	Mon, 19 Oct 2015 01:24:29 +0200
From:	"Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Pin mapping (separate symbols from mappings)
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> On Oct 18, 2015, at 4:38 PM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
> 
> >>> In my opinion, geda-gaf must remain neutral with respect to the
> >>> specifics of the downstream flow.
> >> 
> >> If we added a tool that sat between gschem and <downstream> that
> >> "heavified" symbols, would that tool be part of geda-gaf and thus have
> >> to be neutral about <downstream>, or would that tool not be, and thus
> >> something geda-gaf would have to be neutral about?
> > 
> > It depends on if there need to be feedback. I guess manufacturer part number do not need feed back. Revision number from for example subversion or other would however be useful. Pin numbers?
> > 
> 
> Feedback is perfectly reasonable if done in a tool-neutral way. For manual topology feedback from Osmond PCB, I have a script that compares the gnetlist output with the Osmond as-built netlist. If we defined a format for importing this data into geda-gaf, each downstream flow could provide such a script.
> 
> One geda-gaf issue is that the fundamental pin ID is refdes/pinnumber, confused a bit by slotting. That would be very hard to change, but I think mapping (original refdes)/(original pinnumber) to (as-built refdes)/(as-built pinnumber) is possible.
> 
> John Doty              Noqsi Aerospace, Ltd.
> http://www.noqsi.com/
> jpd AT noqsi DOT com

Gnetlist can generate a netlist from a *.sch file. A tool running the other direction from netlist to gschem should also be posibble, this tool can also do the pin mapping if this is a suitable method to solve the problem. If there are no synchronization problem to update the *.sch file while it is open in gschem this could be a suitable method.

Nicklas Karlsson

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