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Scanning through symbol db

HDar

HI, I am new to skill. I am trying to write a program that checks if there exist an ellipse shape (a bubble) near a negated pin (pins that are negated, it will have "N" at the end). To do this I am trying to get coordinates of both the pin and the bubble, check if the bubble is on the left side of the pin or not (for output pin, the bubble should exist on the right hand side of the pin text).

How do I scan through the symbol view db.

symView = dbOpenCellViewByType( "scratch" "DFF" "symbol" "" "r" ) ; <-- opening the symbol view to a variable 

I am able to get the coordinates of all the bubbles that exist in the symbol, Also coordinates of all the negated pins, but in a separate loop. I want to try doing it in efficient manner ( using one loop ). Thank you for your help.

PS: If there is any document listing out sample scripts, if would be great help to me :)

-HD

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  • I'm not sure this is going to solve your problem. You could find all the shapes matching that pattern by doing:

    endInN(pcreCompile("N$"))
    shapesOnNegatedNet=setof(shape symView~>shapes pcreExecute(endInN shape~>net~>name))

    Oh, you've edited your post since  you first sent it. Anyway, this is unlikely to help because the bubble is not going to be on the net - it's just graphics in the symbol. Presumably you'd have to use the proximity of the shape to the pin figure for the negated terminals? Hard to know without seeing the style of symbols you've got (and even then, I don't think I have the bandwidth to write this for you).

    BTW, there are huge numbers of SKILL samples on these forums and also on Cadence Online Support.

    Regards,

    Andrew.

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  • I'm not sure this is going to solve your problem. You could find all the shapes matching that pattern by doing:

    endInN(pcreCompile("N$"))
    shapesOnNegatedNet=setof(shape symView~>shapes pcreExecute(endInN shape~>net~>name))

    Oh, you've edited your post since  you first sent it. Anyway, this is unlikely to help because the bubble is not going to be on the net - it's just graphics in the symbol. Presumably you'd have to use the proximity of the shape to the pin figure for the negated terminals? Hard to know without seeing the style of symbols you've got (and even then, I don't think I have the bandwidth to write this for you).

    BTW, there are huge numbers of SKILL samples on these forums and also on Cadence Online Support.

    Regards,

    Andrew.

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