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Message-ID: <1379350163.574.19.camel@pcjc2lap>
Subject: Re: [geda-user] request for clarification: via names vs pin names
 (pcb)
From: Peter Clifton <pcjc2 AT cam DOT ac DOT uk>
To: geda-user AT delorie DOT com
Date: Mon, 16 Sep 2013 17:49:23 +0100
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On Mon, 2013-09-16 at 09:40 +0100, Matt Rhys-Roberts wrote:
> On 16/09/13 09:14, DJ Delorie wrote:
> >> I can see the use of editing the pin and pad names, but what is the use
> >> of editing the via and line names?
> > So when you're creating a footprint you can give pins and pads names
> > before you merge them into the footprint.
> 
> Thanks, I see that it works, but why would it be useful to name pin 1 of 
> a component differently from its pad or hole? Sorry if I'm not seeing 
> the obvious yet. :)


If you execute the .cmd file produced by gsch2pcb, the pin names are
renamed to match the net-list.

I just searched for an example in one of my designs where it did not
match, and have:

# Start of element U18
ChangePinName(U18, 8, Ref B)
ChangePinName(U18, 10, Sense B)
ChangePinName(U18, 9, Out B)
ChangePinName(U18, 5, + In B)
ChangePinName(U18, 6, - In B)
ChangePinName(U18, 14, Ref A)
ChangePinName(U18, 12, Sense A)
ChangePinName(U18, 4, V-)
ChangePinName(U18, 11, V+)
ChangePinName(U18, 13, Out A)
ChangePinName(U18, 3, + In A)
ChangePinName(U18, 2, - In A)


When I hit the short-cut to show the pin-out ("d"), on that chip, I get
the descriptive names assigned to the pins. The on-hover tool-tip still
shows the foot-print assigned name, as does the net-list.

Whether or not you see the pin numbers, of the descriptive names can be
toggled from the View menu. (View->"Enable Pinout shows number").


Perhaps not the most obvious feature in the world?



Regards,

-- 
Peter Clifton <peter DOT clifton AT clifton-electronics DOT co DOT uk>

Clifton Electronics