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To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] Yet another sym file generator
In-reply-to:	<jvj6al$bda$1@dough.gmane.org>
References:	<20120709210244 DOT 60387819FB92 AT turkos DOT aspodata DOT se> <20120724143816 DOT E52AD81A00CD AT turkos DOT aspodata DOT se> <20120727171616 DOT CE83482827B2 AT turkos DOT aspodata DOT se> <20120804074711 DOT C53B28283EE9 AT turkos DOT aspodata DOT se> <jvj6al$bda$1 AT dough DOT gmane DOT org>
Comments:	In-reply-to Kai-Martin Knaak <kmk AT familieknaak DOT de>
	message dated "Sat, 04 Aug 2012 14:59:01 +0200."
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Date:	Sun, 5 Aug 2012 10:15:24 +0200 (CEST)
From:	karl AT aspodata DOT se (Karl Hammar)
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Kai-Martin Knaak:
> Karl Hammar wrote:
> > It now supports hierarchical/multipage symbols,
> This is great. Support to create hierarchycal schematics/symbols really 
> should be included in the main GUI of gschem. 
...

How can we make to happen?

///

What I have done is an external script that from a (non-geda) source 
you can:

. create (update) a source-sym/subsheet-sch pair

. match the interface
  i.e. make sure that you have one port symbol for each pin in
  the "source"-symbol (but not the other way around)

. specify where the source-sym-pin-label text will be placed in
  the subsheet port-symbol so it will look "nice"

The proposed workflow is to
. specify the initial pins in the pin-file,
. make a first iteration sym/sch pair
. edit the subsheet sch
. add possible new pins in the pin-file
. rerun the script producing a new source-sym and upd. the subsheet
. revert the subsheet sch in gschem (the new port symbols will appear)
. connect the new port symbol within the subsheet, etc.
. in the upper sheet update the source-sym (will be a drop-in unless
  you rearrange the pins)
... etc.

///

Or would it be better to extract the interface from the subsheet file?
I think that would be harder to do unless you discipline yourself to
use a specific set of symbols only to be used for the
source-sym-pin -- subsheet-port-symbol interface.

Regards,
/Karl Hammar

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