kicad-developers team mailing list archive

[Adam Wolf <adamwolf@xxxxxxxxxxxxxxxxxxxx>]

I hate to be "this guy" (https://xkcd.com/1172/), but I purposefully
connect more than one label to each net.

For example, many of my schematics that have a "chip down Arduino" on them
have an Atmega328 schematic symbol, with Arduino-style labels like D13 and
A0 on the nets.  Then, I have a section where I have wires with labels on
each end, that make the logical connection between the peripherals and the
328p.  This is also a place where I include notes on pinswap options if I
am not the person who routes the board.

There's probably a better way to do this, but it has worked for me and I
have also "seen it in the wild" quite a bit as well.

If this were to be a warning, it would probably need to be something I
could turn off.

Adam Wolf
Cofounder and Engineer
W&L

On Sat, Jul 25, 2015 at 9:43 AM, André S. <list.dev.kicad@xxxxxxxxxxxx>
wrote:

> Hi everyone,
>
> Some time ago I stumpled across a behavior of kicad that I find at least
> annoying if not error producing.
>
> KiCAD does not generate a warning when a net has two (or more) labels
> attached to the same net. This is true for global labels and also for power
> labels.
> In one of my designs this caused kicad to connect an un-hidden power pin
> of some library part on a named net to a different actually "VCC" named net
> (see also bug 1443050).
>
> I suggest that kicad generates at least a warning when one net has more
> than one label.
>
> Also: kicad chooses one of the labels for naming the net in the netlist.
> It seems it uses the last applied label. I think this should be set by the
> user.
> If there are indeed people that use different labels for the same net, I
> think they would be glad to be able to pick the name for the netlist (and
> therefore for the PCB). For others like me this would be the chance to
> correct this error.
>
> What do you think about this?
>
> On a side note: I think kicad did not connect un-hidden pins to VCC in
> older versions (around 2012).
>
> Best regards,
> André
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