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extracting pad stack information through skill scripting

archanav

Hi Dave, i used the below functions to get the pad dimension and solder mask value provided in the pad stack editor. using both I am not getting the required output. Please let me know what i need to do to get the pad size given in the design layer section under regular pad column and solder mask value given in the mask layer (top/bottom) in mm.

skill > padStackId=axlLoadPadstack("Padstack name")

skill> pad=axlDBGetPad(padStackId "layer" "regular")

  • DavidJHutchins
    0

    pad=axlDBGetPad(padStackId "ETCH/TOP" "regular")

    pad=axlDBGetPad(padStackId "PIN/SOLDERMASK_TOP" "regular")

    (llx = (caar((pad->bBox)) + (xCoord (pad->offset))))
    (lly = (cadar((pad->bBox)) + (yCoord (pad->offset))))
    (urx = (caadr((pad->bBox)) + (xCoord (pad->offset))))
    (ury = (cadadr((pad->bBox)) + (yCoord (pad->offset))))
    (Dx = (urx - llx))
    (Dy = (ury - lly))

  • archanav
    0 in reply to DavidJHutchins

    Hi David,

    thanks for your reply. sorry for asking you again. i executed like this. but I want in x and y dimension values whatever we had given in pad stack editor and that to in mm. and i also i  tried like this by importing the il file but not getting the output what I required.

    file

  • DavidJHutchins
    +1 in reply to archanav

    Below is  some sample code that reports the pad info in MM units:

    procedure(get_pad_info()
        let((popup pad llx lly urx ury Dx Dy)
           popup = axlUIPopupDefine( nil (list (list "Done" 'axlFinishEnterFun) (list "Cancel" 'axlCancelEnterFun)))
            axlUIPopupSet( popup)
            axlSetFindFilter( ?enabled list("noall") ?onButtons "noall")
            axlSetFindFilter( ?enabled list("pins" "vias") ?onButtons list("pins" "vias"))
            axlMKSConvert(nil "MM")
            (while axlSelect()
                progn(
                    (pad = axlDBGetPad(car(axlGetSelSet()) "etch/top" "regular"))
                    (llx = (caar((pad->bBox)) + (xCoord (pad->offset))))
                    (lly = (cadar((pad->bBox)) + (yCoord (pad->offset))))
                    (urx = (caadr((pad->bBox)) + (xCoord (pad->offset))))
                    (ury = (cadadr((pad->bBox)) + (yCoord (pad->offset))))
                    (Dx = (urx - llx))
                    (Dy = (ury - lly))
                    if( ((pad->figureName) == "CIRCLE") || ((pad->figureName) == "OCTAGON")  || ((pad->figureName) == "SQUARE")  || ((pad->figureName) == "DONUT") then
                       axlMsgPut("Pad figure type : %s size %fmm\n" pad->figureName Dx)
                    else
                       if( ((pad->figureName) == "RECTANGLE") || ((pad->figureName) == "OBLONG_X") || ((pad->figureName) == "OBLONG_Y") || ((pad->figureName) == "ROUNDED_RECTANGLE")  || ((pad->figureName) == "CHAMFERED_RECTANGLE") then
                          axlMsgPut("Pad figure type : %s width %fmm height %fmm\n" pad->figureName Dx Dy)
                       else
                          axlMsgPut("Pad figure type : %s Unknown Size\n" pad->figureName )
                       )
                    )
                    (pad = axlDBGetPad(car(axlGetSelSet()) "PIN/SOLDERMASK_TOP" "regular"))
                    (llx = (caar((pad->bBox)) + (xCoord (pad->offset))))
                    (lly = (cadar((pad->bBox)) + (yCoord (pad->offset))))
                    (urx = (caadr((pad->bBox)) + (xCoord (pad->offset))))
                    (ury = (cadadr((pad->bBox)) + (yCoord (pad->offset))))
                    (Dx = (urx - llx))
                    (Dy = (ury - lly))
                    if( ((pad->figureName) == "CIRCLE") || ((pad->figureName) == "OCTAGON")  || ((pad->figureName) == "SQUARE")  || ((pad->figureName) == "DONUT") then
                       axlMsgPut("Paste figure type : %s size %fmm\n" pad->figureName Dx)
                    else
                       if( ((pad->figureName) == "RECTANGLE") || ((pad->figureName) == "OBLONG_X") || ((pad->figureName) == "OBLONG_Y") || ((pad->figureName) == "ROUNDED_RECTANGLE")  || ((pad->figureName) == "CHAMFERED_RECTANGLE") then
                          axlMsgPut("Paste figure type : %s width %fmm height %fmm\n" pad->figureName Dx Dy)
                       else
                          axlMsgPut("Paste figure type : %s Unknown Size\n" pad->figureName )
                       )
                    )
                )
            )
        )
    )

  • archanav
    0 in reply to DavidJHutchins

    Hi David, Thanks for your great support and thanks for sharing this. This is working well for all types of pins. and I added the code part to get the bottom layer pins information and paste mask value information. Currently I am working on fetching the line segments width present in package geometry assembly and silkscreen layer and changing as per my requirement through script only. for this one i am using cwidth.il file but there I changed the layer name and did some of the modifications. still not able to achieve my requirement. I attached my file here please see and let me know where I am missing. Assy_silk_width.zip

  • DavidJHutchins
    0 in reply to archanav

    Below is some info on getting pin info I found by looking at old postings:

    - You can get the internal definition (DEFAULT INTERNAL) by doing using the 'internal symbol as the 2nd arg to GetPad

              pad = axlDBGetPad(pin 'internal "REGULAR")

    - For toleranace you need to access the padstack. For example if you have a pin dbid assigned to variable "pin". Then you would:

         def = pin->definition     ; get padstack

         ; tolerance is represented as a list of (+tol -tol) in design units (float)  

          printf("tol %L\n" def->holeTolerance)

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