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Date: Sat, 6 Jan 2018 17:14:55 +0100
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] why pinnumber in sym pins?
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> Ok, I get it and done some testing in http://turkos.aspodata.se/tmp/gEDA/pinnumber/
> 
> So, in a sym file (dcdc_isol.sym), a:
> 
> P 300 200 0 200 1 0 1
> {
> T 275 225 5 6 1 1 0 6 1
> pinnumber=-Vin
> }
> 
> gives the correct net:
> 
> $ fgrep -e -Vin test.net 
> 0V      U1--Vin X1-1 U2--Vin 
> $
> 
> where U1--Vin is matched by pcb to the second "-Vin" (the pins "number")
> in the fp:
> 
>   Pin [   0.000mm   0.000mm    2.000mm   0.500mm   2.400mm   1.000mm "-Vin" "-Vin" "" ]
> 
> giving me the correct ratsnet in test.pcb.
> 
> ///
> 
> That implies that I potentially need two fp for the same thing:
> , one with numbers, if I use numbers in the sym file

I think the pinseq attribute is used to map to footprint pin?

> . one with names, if I use names in the sym file

To use labels on pins in footprint might be a solution to the mapping problem.


Mapping is the only hard thing with schematic symbols otherwise it is simple regardless of type: electric circuit, hydraulic circuit, simulink/xcos style blocks, ...


Nicklas Karlsson