Re: gEDA-user: Layer selective DRC

[Levente Kovacs <leventelist@xxxxxxxxx>]

If you add the attribute

PCB::skip-drc

to a layer, that won't be checked against DRC, and commections.

Levente

On Wed, 3 Aug 2011 23:56:23 -0700
Colin D Bennett <colin-lP2cYvw5bIVBDgjK7y7TUQ@xxxxxxxxxxxxxxxx> wrote:

> On Thu, 04 Aug 2011 01:48:09 +0200
> Kai-Martin Knaak <kmk-G3rIa76UAx2M+VuuqaXKaA@xxxxxxxxxxxxxxxx> wrote:
> 
> > Colin D Bennett wrote:
> > 
> > > A feature I have heard previously requested is to be able to mark
> > > certain layers as âno-DRCâ.  For instance, to allow special trace
> > > elements such as antennas that the DRC thinks are incorrect shorts
> > > between two nets.
> > 
> > These should be omited from update_rats, rather than be ignored on
> > DRC. The DRC as it is currently implemented, does not check for
> > correct connectivty. It does not detect a short.
> 
> Oh, that's right.  I forgot since I tend to consider the Optimize Rats
> action and its feedback as a first pass of DRC, and the actual DRC
> action as a more detailed pass... but it seems like it would be ideal
> for a short to be detected by DRC.
> 
> > I think, this
> > functionality would be best implemented with a flag
> > "don-t-check-connectivity" added to the object. Put these antennas
> > in a separate layer and make DRC special for this layer would still
> > feel like a crutch.  
> 
> My current workaround is to actually connect the antenna input
> directly to ground on the schematic, so that pcb does not complain
> that the PCB trace antenna is a short.  (See attached figure from the
> schematic.)  For this specific and simple purpose, this works well
> enough for the moment.
> 
> Regards,
> Colin
> 


-- 
Levente Kovacs
http://levente.logonex.eu


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