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From:	Bdale Garbee <bdale AT gag DOT com>
To:	"N \(nicklas.karlsson17\@gmail.com\) \[via geda-user\@delorie.com\]" <geda-user AT delorie DOT com>,
	geda-user AT delorie DOT com
Subject:	Re: [geda-user] gnetlist, attributes
In-Reply-To:	<20191214230741.98800b1957f2c34454c9d7a6@gmail.com>
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Date:	Sat, 14 Dec 2019 16:38:18 -0700
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"N (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]"
<geda-user AT delorie DOT com> writes:

>> If I am not mistaken, using the
>>=20
>> file -  import schematic
>>=20
>> Functionality is the simplest way to import a netlist.
>
> That's what I used. Then it did not work I investigated and found it call=
 gnetlist or lepton-netlist which is the reason I asked about these.
>
>> http://repo.hu/cgi-bin/pool.cgi?cmd=3Dshow&node=3Dimport_sch
>
> Read this and discovered a new tEDAx format for netlist have already
> been implemented in both lepton and pcb-rnd. This new tEDAx netlist
> file format also have footprint value for the components so that all
> communication in between use this format!

FYI, I wrote the tEDAx export module for lepton-netlist.

Right now, it conveys the bare minimum set of attributes necessary to
lay out boards using pcb-rnd.  I've used it to put several boards into
production with a 'make pcb' target that looks like:

  pcb:    $(SCHEMATICS) Makefile $(CONFIG)
        lepton-netlist -g tEDAx -o $(PROJECT).tdx $(SCHEMATICS)
        echo 'LoadTedaxFrom(netlist, $(PROJECT).tdx); SaveTo(Layout)' | \
                pcb-rnd --gui batch $(PROJECT).lht

I've talked to Tibor about having more control over where new footprints
get placed on the target board when driving a tEDAx import from the
command line like this, but for the moment, note that any new parts are
highly likely to be placed on top of existing circuitry, and you need to
manually remove any parts on the pcb that are no longer needed (by which
I mean have been removed from the schematic).

If you find a reason to want to transfer additional attributes, it
wouldn't be hard to extend the exporter and associated test suite cases.

Bdale

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