kicad-developers team mailing list archive

[Janis Skujenieks <janis.skujenieks@xxxxxxxxx>]

Yes, I now see that this approach has major flaws.

I was wrongly counting that track editing keeps netcodes in *check. *
*
*
I guess I'll use my version with care, or when possible write some other
method (focusing on vias).

Thanks everybody for participating!

On Tue, Mar 6, 2012 at 9:47 PM, jean-pierre charras
<jp.charras@xxxxxxxxxx>wrote:

> Le 22/02/2012 16:51, Janis Skujenieks a écrit :
>
>  OK, I understand what your saying.
>>
>> Jean-Pierre, maybe you can check the patch and give your thoughts on
>> using this kind of solution.
>>
>> P.S. Thanks for the tips.
>>
>
> Janis,
>
> I tested your patch.
>
> Due to the code removed there is an issue:
> Netcodes are sometimes wrongly calculated.
>
> This issue is easy to reproduce (it is tricky, but can be found after a
> schematic change and reloading a netlist).
> It needs 2 nets and 4 pads:
> for instance net1 and net2, each net connecting 2 pads.
>
> 1 - connect 2 pads (net1 code) using a 3 segments track.
> 2 - connect the 2 other pads (net2)
>
> 3 - remove in net1 the 2 segments connected to pads. A not connected track
> (having net1 netcode) is left.
>
> 4 - Disable the DRC control and connect this "not connected" track to the
> track that connects the 2 "net2" pads
> (connect it to the track, not the pads)
>
> Rebuild the connectivity: the net1 track still remains wrongly connected
> to net1 (DRC test find a drc error).
>
> At top level, keep old netcodes to tracks not connected to pads creates
> other issues:
> for instance can create not floating copper islands in copper pours (very
> easy to create).
> This breaks a feature of Pcbnew that remove in zones all not connected
> (floating areas) copper areas.
>
>
> Fix these issues is not trivial.
>
>
>
> --
> Jean-Pierre CHARRAS
>
>
>
> ______________________________**_________________
> Mailing list: https://launchpad.net/~kicad-**developers<https://launchpad.net/~kicad-developers>
> Post to     : kicad-developers@lists.**launchpad.net<kicad-developers@xxxxxxxxxxxxxxxxxxx>
> Unsubscribe : https://launchpad.net/~kicad-**developers<https://launchpad.net/~kicad-developers>
> More help   : https://help.launchpad.net/**ListHelp<https://help.launchpad.net/ListHelp>
>