kicad-developers team mailing list archive

[Dick Hollenbeck <dick@xxxxxxxxxxx>]

On 02/09/2012 10:51 AM, Brian F. G. Bidulock wrote:
> Dick,
>
> I don't see the need for this.  If one wants a track not connected to a
> pin in the schematic, add a module to the board with a pad the same diameter
> as the track thckness and assign any netname you want to the pad and then
> connect your track to it.  I do this with two pads and a gap for laying
> out differential pairs all the time in pcbnew.

Clever, and with different orientation of the pad pair, I suppose you can accurately
control the spacing between the pair as you go.  ?

Nice idea.

I don't have a strong opinion on this patch, but would be inclined to weigh your opinion
more heavily than mine on this one.

Maybe Jean-Pierre or somebody else can also comment.

Dick


>   No coding required.
>
> --brian
>
> On Thu, 09 Feb 2012, Dick Hollenbeck wrote:
>
>> Janis
>>
>> 1) This PATCH is going to take some time to process, it will require some discussion.  In
>> any case it is not conformant to coding standards as is but it is not a large patch so I
>> would not bother resubmitting it yet.
>>
>> 2) you will have to join the mailing list to continue posting.
>>
>>
>>> Hi!
>>>
>>> Been using KiCAD and encountered bug.
>>>
>>> Description of bug:
>>> The issue is that tracks that are floating (not connected to any pad) lost netcodes
>>> after reloading board file or doing DRC. This was important
>>> because I use VIAs to improve impedance, thermal conductivity etc.
>>>
>>> Solution:
>>> My attached patch fixes this.
>>>
>>> The principle is that all tracks created have netcode so in recalculation function
>>> "PCB_BASE_FRAME::RecalculateAllTracksNetcode" I simply mark track netcode with flag bit
>>> in MSB. Then one pass trough all tracks creating set of substitution pairs. This is done
>>> finding tracks connected to pads and storing this tracks netcode together with pads
>>> netcode as substitution pair in a set. Remember that track netcodes are flaged so no
>>> chance of equal netcodes. 
>>>
>>> Then continue with track interconnection generation, as I understand this is not done
>>> after file read.
>>>
>>> Last step, go trough all tracks again and change netcodes according to substitution set
>>> data. Difference is that now even tracks not connected can have their netcode updated to
>>> correct value. Netcodes that doesn't have substitution data are set to 0. This would be
>>> case where some part is deleted and traces left with now non-existing netcode.
>>>
>>>
>>> Janis Skujenieks
>>>
>>>
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