kicad-developers team mailing list archive

[Wayne Stambaugh <stambaughw@xxxxxxxxx>]

Thank you for the reply.  If your patch is causing this, then I wont
merge it.  Breaking schematics would violate our backwards compatibility
policy.  I'm fine if we change the wire connection tool to prevent this
in the future but we should not be changing existing connections.


On 3/8/2017 4:20 AM, Oliver Walters wrote:
> Wayne,
> 
>     Is there any possibility that this will break existing schematic
>     netlists?
> 
> 
> There is no guarantee that this will not change netlist, especially as
> netlist association is performed based on x,y position of pins.
> 
> I have just tested this, opening the same schematic in versions with
> this patch ON / OFF. The NC connections are made / unmade whenever the
> schematic is loaded.
> 
> I do not believe there is any way around this.
> 
> Oliver
> 
> On Wed, Mar 8, 2017 at 12:54 AM, Wayne Stambaugh <stambaughw@xxxxxxxxx
> <mailto:stambaughw@xxxxxxxxx>> wrote:
> 
>     Oliver,
> 
>     Is there any possibility that this will break existing schematic
>     netlists?  I'm assuming this patch only prevents the user from
>     generating new invisible/no-connect connections.
> 
>     Is anyone else opposed to this?
> 
>     Cheers,
> 
>     Wayne
> 
>     On 3/7/2017 7:33 AM, Oliver Walters wrote:
>     > Is there any objection to applying this patch in its current form? Note
>     > that all it prevents is users accidentally joining pins that are already
>     > invisible AND non-connect.
>     >
>     > Cheers,
>     > Oliver
>     >
>     > On Wed, Feb 8, 2017 at 11:05 PM, Oliver Walters
>     > <oliver.henry.walters@xxxxxxxxx
>     <mailto:oliver.henry.walters@xxxxxxxxx>
>     <mailto:oliver.henry.walters@xxxxxxxxx
>     <mailto:oliver.henry.walters@xxxxxxxxx>>>
>     > wrote:
>     >
>     >     Urgh, patch attached here.
>     >
>     >     On Wed, Feb 8, 2017 at 11:04 PM, Oliver Walters
>     >     <oliver.henry.walters@xxxxxxxxx <mailto:oliver.henry.walters@xxxxxxxxx>
>     >     <mailto:oliver.henry.walters@xxxxxxxxx
>     <mailto:oliver.henry.walters@xxxxxxxxx>>> wrote:
>     >
>     >         I have amended the patch to only ignore connection of pins that
>     >         are both INVISIBLE and NC (Electrical Type = Not Connected).
>     >         This will improve the safety of the current libraries which do
>     >         contain many parts with NC pins set as invisible.
>     >
>     >         It will also NOT change the behaviour of people using invisible
>     >         pins for one-to-many connection.
>     >
>     >         Thoughts?
>     >
>     >         On Tue, Feb 7, 2017 at 7:47 PM, Oliver Walters
>     >         <oliver.henry.walters@xxxxxxxxx <mailto:oliver.henry.walters@xxxxxxxxx>
>     >         <mailto:oliver.henry.walters@xxxxxxxxx
>     <mailto:oliver.henry.walters@xxxxxxxxx>>> wrote:
>     >
>     >             Hi all,
>     >
>     >             The attached patch prevents invisible pins from being
>     >             connected using the wire tool in eeschema.
>     >
>     >             a) If you connect a wire endpoint to the same position as a
>     >             pin endpoint, they are NOT connected visually
>     >             b) Wires and insivible pins are also ignored during netlist
>     >             creation
>     >             c) This does not affect the ability of invisible power-pins
>     >             to automatically connect to global power labels
>     >
>     >             Is the current behavior of connecting invisible pins to wire
>     >             endpoints desired? Or is it just an aberration?
>     >
>     >             If there is a very good reason that pins not visible in the
>     >             schematic are able to be connected silently?
>     >
>     >             before: http://i.imgur.com/3gModvW.png
>     >             <http://i.imgur.com/3gModvW.png <http://i.imgur.com/3gModvW.png>>
>     >
>     >             after: http://i.imgur.com/r8O7c3Y.png
>     >             <http://i.imgur.com/r8O7c3Y.png <http://i.imgur.com/r8O7c3Y.png>>
>     >
>     >             (Note the 'dangling' wire-end indication)
>     >
>     >             Cheers,
>     >             Oliver
>     >
>     >
>     >
>     >
>     >
>     >
>     >
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