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Moving Pins

Philey

 Hi All,

I am completly new in SKILL programming and looking for a simple code to move automatically pins to instances (subblocks) generated in VXL.

 

Rgds

Philey 

  • I think you'll need to describe in a bit more detail what you mean.

    You might be asking for a way to move top level pins to be over the pin on an instance to which that pin is connected (what happens if the pin is connected to more than one instance pin), or you might be asking something else.

    Regards,

    Andrew

  •  Hi,

    it is exactly the case.For simplicity let's assume that pin is connected to one instance.

    Rgrds

    Philey

  • I was just looking at the SKILL code I have which does something similar. Unfortunately it contains a lot of things specific to the customer I wrote it for, as well as a whole bunch of other things which make the code too complex an example to post.

    And I don't have time for the next week or two to produce a cut down, simplified example.

    Perhaps somebody else can post something...

    The general idea is that you would do something like:

    foreach(term cv~>terminals
      ; iterate over all the pins for this terminal
      foreach(pin term~>pins
        pinFig=pin~>fig
        net=term~>net
        ; only do this if there aren't more than one inst term
        unless(cdr(net~>instTerms)
          instTerm=car(net~>instTerms)
          childTerm=instTerm~>terminal
          childPinFig=car(childTerm~>pins)~>fig
          ; location within the instance master
          location=centerBox(childPinFig~>bBox)
          ; transform to the top level coordinate system
          location=dbTransformPoint(location instTerm~>inst~>transform)
          pinFigLocation=centerBox(pinFig~>bBox)
          ; calculate the overall transform to move the pin to the new location
          transform=dbConcatTransform(list(-xCoord(pinFigLocation):-yCoord(pinFigLocation) "R0" 1) location)
          dbMoveFig(pinFig transform)
        )
      )
    )

    Note this is completely off the top of my head, with no testing.  Indentation may be a bit awry because I just typed it into the browser.

    Regards,

    Andrew.

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