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How to change customVia using skill

prasadtammana

Hi All,

I'd like to replace a customVia with a different customVia. I'm not able to get the parameters of the old customVia using car(geGetSelSet())~>viaHeader~>overrideParams command, as it returns nil.

Could someone help me on how to get the rows and columns information for customVia and also assign these to a new customVia. 

Thanks,

Prasad

Parents
  • mbracht

    car(geGetSelSet())~>viaHeader~>viaDef~>params

  • prasadtammana
    in reply to mbracht

    Thanks for your reply. But it doesn't work. Return nil again. 

  • psill000
    in reply to prasadtammana

    stdvia
    obj~>cutRows
    obj~>cutColumns

    customVia
    obj~>row
    obj~>column

  • prasadtammana
    in reply to psill000

    For some reason, even this doesn't work. 

  • psill000
    in reply to prasadtammana

    Select the object and type the command below in the CIW

    What does geGetSelSet()~>?? output in the CIW

  • mbracht
    in reply to prasadtammana

    sorry - I missed that we talk about a custom via and not a standard via. Custom vias are essentially pcells - can you try this:

    (foreach mapcar param (car (geGetSelSet))~>viaHeader~>master~>parameters~>value (list param~>name param~>value))

    Max

Reply
  • mbracht
    in reply to prasadtammana

    sorry - I missed that we talk about a custom via and not a standard via. Custom vias are essentially pcells - can you try this:

    (foreach mapcar param (car (geGetSelSet))~>viaHeader~>master~>parameters~>value (list param~>name param~>value))

    Max

Children
  • prasadtammana
    in reply to mbracht

    Sorry ... I'm getting details until car(geGetSelSet())~>viaHeader~>master. nothing after that. It returns nil for parameters. 

  • Andrew Beckett
    in reply to prasadtammana

    Since even for a custom via you would expect that car(geGetSelSet())~>viaHeader~>overrideParams would work, my guess is that your custom via is not actually a parameterised cell and is a fixed layout. The fact that the master doesn't have a parameters hierProp suggests this too.

    If you use Edit Properties on the selected via, does it show any rows/columns or anything like that? Can you change any parameters and do they have an effect?

    Regards,

    Andrew.

  • prasadtammana
    in reply to Andrew Beckett

    Thanks for your reply Andrew. It has rows and columns information in the properties, but they don't have any effect on the layout when changed. 

  • Andrew Beckett
    in reply to prasadtammana

    Another way to check is to find the lib/cell/view of the customVia from the tech file and do:

    cv=dbOpenCellViewByType("lib" "cell" "view")

    if cv~>isParamCell returns nil, it is not a pcell. 

    Or you could check:

    car(geGetSelSet())~>viaHeader~>master~>superMaster

    If that is nil, it's not a pcell.

    Regards,

    Andrew.

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