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Reading PCell Properties/Parameters using SKILL

frasheed

 Hello All,

I have a PCell that has nfet layout and I am writing a SKILL code to open the layout and label the Gate, Drain, Source and Bulk in layout. For that I need to read the parameters that where is the Gate, Drain and Sourcein layout. I tried some commands like :

pcGetParameters , pcGetParamLabelDefn, pcGetParamLabels, pcGetParamLayers but all of them are given me "Nil". Can anyone help me what's wrong ? Is it because the PCell doesn't have any properties ?

or is there any better way for labeling ?

Thanks

P.S: I didn't created that PCell and I am very beginner to SKILL.

 

Parents

  •  Hey Ted,

    Thanks for your reply, I edited my code like this:

    procedure(CCFaddInstPinLabels(@optional (cellView geGetEditCellView()))
    let( (transform pinCenter)
      foreach( inst cellView~>instances
        transform=inst~>transform
        foreach( instTerm inst~>instTerms
        if(instTerm~>name == "b"
        then
            tf=techGetTechFile(cellView)
        viaDef=techFindViaDefByName(tf "RXNWCAM1")
        b_db = dbCreateVia(cellView viaDef 0.2:0.4 "R0")
        b_pin = dbCreatePin(instTerm~>net b_db "b")
        cellView~>instances~>instTerms~>term~>pins = subst(b_pin '(nil) cellView~>instances~>instTerms~>term~>pins) ;; update bulk pin db in cellview properties

         );if
          foreach( pin instTerm~>term~>pins
          pinCenter=centerBox(pin~>fig~>bBox)
          dbCreateLabel(cellView list("M1" "label")
              if(pin~>name == "b"
              then
              dbTransformPoint(pinCenter list(0:0 "R0")) ;No transformation for Bulk
              else
              dbTransformPoint(pinCenter transform)
              );if
              strcat("n" instTerm~>name)
              "centerCenter"
              "R0" "stick"
          0.0625
            ); dbCreateLabel
          ); foreach pin
        ); foreach instance terminal
      ); foreach instance
    );let
    ); procedure CCFaddInstPinLabels

    CCFaddInstPinLabels()

     but substitution command it's substitutiong the db for bulk to the nil value but when I try to retreve pin~>name then virtuoso is crashing.

    and 1 more thing I have noticed that before substiutiong the list is 

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) nil))

     

    after subst(b_pin '(nil) cellView~>instances~>instTerms~>term~>pins) the values are

     

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) . db:0x16dda11a))

     

    there is a '.' (dot) before last db , this might be the reason virtuoso is crashing ? if so how to remove that ?

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) . db:0x16dda11a))

     

    how can I set it with dbSetq? I am confused at the input values fro dbSetq

    thanks

     

     

     

     

Reply

  •  Hey Ted,

    Thanks for your reply, I edited my code like this:

    procedure(CCFaddInstPinLabels(@optional (cellView geGetEditCellView()))
    let( (transform pinCenter)
      foreach( inst cellView~>instances
        transform=inst~>transform
        foreach( instTerm inst~>instTerms
        if(instTerm~>name == "b"
        then
            tf=techGetTechFile(cellView)
        viaDef=techFindViaDefByName(tf "RXNWCAM1")
        b_db = dbCreateVia(cellView viaDef 0.2:0.4 "R0")
        b_pin = dbCreatePin(instTerm~>net b_db "b")
        cellView~>instances~>instTerms~>term~>pins = subst(b_pin '(nil) cellView~>instances~>instTerms~>term~>pins) ;; update bulk pin db in cellview properties

         );if
          foreach( pin instTerm~>term~>pins
          pinCenter=centerBox(pin~>fig~>bBox)
          dbCreateLabel(cellView list("M1" "label")
              if(pin~>name == "b"
              then
              dbTransformPoint(pinCenter list(0:0 "R0")) ;No transformation for Bulk
              else
              dbTransformPoint(pinCenter transform)
              );if
              strcat("n" instTerm~>name)
              "centerCenter"
              "R0" "stick"
          0.0625
            ); dbCreateLabel
          ); foreach pin
        ); foreach instance terminal
      ); foreach instance
    );let
    ); procedure CCFaddInstPinLabels

    CCFaddInstPinLabels()

     but substitution command it's substitutiong the db for bulk to the nil value but when I try to retreve pin~>name then virtuoso is crashing.

    and 1 more thing I have noticed that before substiutiong the list is 

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) nil))

     

    after subst(b_pin '(nil) cellView~>instances~>instTerms~>term~>pins) the values are

     

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) . db:0x16dda11a))

     

    there is a '.' (dot) before last db , this might be the reason virtuoso is crashing ? if so how to remove that ?

    (((db:0x16ddb39b) (db:0x16ddb39d db:0x16ddb39c) (db:0x16ddb39a) . db:0x16dda11a))

     

    how can I set it with dbSetq? I am confused at the input values fro dbSetq

    thanks

     

     

     

     

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