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Pitch distance measure by Skill

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Hello All, I can provide to my Skill program some placed BGA RefDes ("U40" for example). How Skill program could measure this BGA balls pitch distance ? Any response appreciated Thanks, Shimon


Originally posted in cdnusers.org by shimon37
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  • Hi Babu,

    Pasting all those lines into the Skill window won't work. The interactive command interpreter will only accept one Skill command at a time - and it must be all on one line.

    In the example you would have to paste each of these lines one by one:
    symbol = car(axlSelectByName("REFDES" "U40"))
    minPitch = nil
    foreach(pin1, pins foreach(pin2, remove(pin1, pins)
     pitch = axlDistance(pin1 ->xy, pin2 ->xy) minPitch = if(minPitch, min(minPitch, pitch), pitch)))
    minpitch

    Note how the foreach loop must be self-contained on one line.
    I will discuss this issue with Cadence at the next week's CDNlive conference. Other Lisp implementations that I have used do not have this limitation.

    Cheers, Dave
Reply
  • Hi Babu,

    Pasting all those lines into the Skill window won't work. The interactive command interpreter will only accept one Skill command at a time - and it must be all on one line.

    In the example you would have to paste each of these lines one by one:
    symbol = car(axlSelectByName("REFDES" "U40"))
    minPitch = nil
    foreach(pin1, pins foreach(pin2, remove(pin1, pins)
     pitch = axlDistance(pin1 ->xy, pin2 ->xy) minPitch = if(minPitch, min(minPitch, pitch), pitch)))
    minpitch

    Note how the foreach loop must be self-contained on one line.
    I will discuss this issue with Cadence at the next week's CDNlive conference. Other Lisp implementations that I have used do not have this limitation.

    Cheers, Dave
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