pCell skill for beginners

Oops, I forgot to say that the CDF callback can be used to provide feedback to the user, as well as changing the value, e.g. to clamp it at the minimum or maximum value so that the CDF callback enforces a valid range, as well as perhaps printing a message in the CIW or popping up a dialog box (although the latter tends to annoy users since you have to dismiss it).

Regards,

Lawrence.

Hi,

 I am new in pcell creation.I need help.I wnt code which creates pcell which takes more then 3 layers as its parameters.Also the layer purpose pair i would like to have as "fill".Can anyone help me out.

Thanks,

 Messi

I am  new to skill.I am trying to use your program to draw metal rectangle and labels.What command should I give in CIW window .I tried CCScreateBoxAndLabels( 1 0.6 1) its complaning about dnn being database object ?? I scanned through the sklanguser manual but could not get the answere.

Thanks.

The precise error message would have been:

CCScreateBoxAndLabels( 1 0.6 1) *Error* CCScreateBoxAndLabels: argument #1 should be a database object (type template = "dnn") - 1

The "dnn" is the argument to the function definition which adds type-checking. It is checking that the first argument is a database object, and the next two are numbers.

I'm not sure why you passed 1 as the first argument, that makes no sense. It is expecting a cellView id, as returned by geGetEditCellView() (if you have a layout window open), or from dbOpenCellViewByType("mylib" "mycell" "layout" "maskLayout" "a")

So for example:

cv=geGetEditCellView()
CCScreateBoxAndLabels(cv 0.6 1)

Regards,

Andrew.

Thanks Andrew. I started with top-down approach with skill rather then bottom-up.I thought it was easier way for me to learn skill coding.

What I mean by that is :I have written skill code that can generate array and labels from already layed out cell.

I had few questions regarding this :

Is there any way I can generate skill code from layout I have? I had this question because I wanted generic way for generating text from lower level layout cells on top level cells.

Eg : If I have x cell which has 10 - y cells arrayed.I want labels from y cells to be replicated at x level with _1,_2,_3 .

I know and I already did skill code for this but I need a standard way ( single code) that can do it for any cell array I want .This without hardcoding the labels and pins in my skill script.

For this reason wanted to check if there is some way I can generate skill code from layout of lower level.This way I can make my standard skill code point to  skill code generated from layout to pass on the pins labels etc. 

I am really struggling over making standard code for all the array combinations without having hard coded labels or pins.Please suggest me if you have any other better way or idea regarding this.

Thanks,

Sapna. 

Hello Lawrence ,

I would really appreciate if you could take a look at the following code and the errors im getting .

; ------------------------------------------------------------------------------

; -- Init

; ------------------------------------------------------------------------------

(define (jfet_fno_SKILL p_libname p_cellname) ; (pcDefinePCell

    (list

      (ddGetObj (eval p_libname) (eval p_cellname)) "layout"

    )

; ------------------------------------------------------------------------------

; -- Params

; ------------------------------------------------------------------------------

    (

      (W         float       10.0)

      (L          float       10.0)

      (PWpb       float  -0.20)

      (PDNpb            float   0.0)

      (PDPtop           boolean t)

      (PDPext           boolean t)

      (PDNcover   boolean t)

      (CELLHtop   boolean t)

    )

; ------------------------------------------------------------------------------

; -- Main

; ------------------------------------------------------------------------------

    (let

      (pcMember pcStretchGroup

          stretchOffsetX stretchOffsetY pcLib pcMaster pcInst

          pcTerm pcPin pcPinName pcNet pcTermNet

          pcNetName pcTermNetName pcMosaicInst tpcParameters pcParamProp

          pcStep pcStepX pcStepY pcRepeat pcRepeatX

          pcRepeatY pcIndexX pcIndexY pcLayer pcPurpose

          pcLabelText pcLabelHeight pcPropText pcParamText pcCoords

          pcPathWidth pcPolygonMargin

      )

      (setq pcLib

          (getSGq pcCellView lib)

      )

      (setq pcParameters

          (getSGq

            (getSGq pcCellView parameters) value

          )

      )

      (dbReplaceProp pcCellView "viewSubType" "string" "maskLayoutParamCell")

; -- Init layer names ----------------------------------------------------------

      lay_DIFF    = techGetLP(pcLib `("diff"   "drawing"))~>number

      lay_HV            = techGetLP(pcLib `("diff"   "hv"     ))~>number

      lay_POLY    = techGetLP(pcLib `("poly"   "drawing"))~>number

      lay_PWELL   = techGetLP(pcLib `("pwell"  "drawing"))~>number

      lay_NWELL   = techGetLP(pcLib `("nwell"  "drawing"))~>number

      lay_PDN           = techGetLP(pcLib `("nps"    "drawing"))~>number

      lay_PDP           = techGetLP(pcLib `("pps"    "drawing"))~>number

      lay_NSDM    = techGetLP(pcLib `("nsdm"   "drawing"))~>number

      lay_CELLM   = techGetLP(pcLib `("cellm"  "drawing"))~>number

      lay_CELLTX  = techGetLP(pcLib `("celltx" "drawing"))~>number

      lay_CELLH   = techGetLP(pcLib `("cellh"  "drawing"))~>number

      lay_CELLRS  = techGetLP(pcLib `("cellrs" "drawing"))~>number

      lay_CIRPO   = techGetLP(pcLib `("cirpo"  "drawing"))~>number

      lay_PIXID   = techGetLP(pcLib `("areaid" "pixel"))    ~>number

      lay_M1            = techGetLP(pcLib `("met1"   "drawing"))~>number

      lay_TEXT    = techGetLP(pcLib `("text"   "drawing"))~>number

; -- Defaults ------------------------------------------------------------------

      tech_lib          = "ts018c0702tc_dv"

      Wmax              = 20.0

      Lmax              = 20.0

      cor_size          = 0.15

      ref_x             =  0.0

      ref_y             = -L/2

; -- Init suncells -------------------------------------------------------------

      (setq pcMaster_DFM1 (dbOpenCellViewByType tech_lib "DFM1" "symbolic" "maskLayout"))

      (setq pcMaster_TPM1 (dbOpenCellViewByType tech_lib "TPM1" "symbolic" "maskLayout"))

; -- Metal 1 connection --------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_M1 "drawing")

            (list

                (range  ref_x+1.0                           ref_y+2.4+L)

                (range  ref_x-1.0                           ref_y+2.4+L)

                (range  ref_x-1.0                           10)

                (range  ref_x+1.0                           10)

            )

          )

      )

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_M1 "drawing")

            (list

                (range  ref_x+1.0                           ref_y-2.4)

                (range  ref_x-1.0                           ref_y-2.4)

                (range  ref_x-1.0                           -10)

                (range  ref_x+1.0                           -10)

            )

          )

      )

; -- Contacts ------------------------------------------------------------------

      (numb_of_cont   = (round (Wmax/0.47))-1)

      (cell_coord     = (range ref_x-numb_of_cont/2.0*0.47 ref_y-2.5))

      (dbCreateParamInst pcCellView pcMaster_DFM1 nil cell_coord "R0" 1  list(

                  list( "column" "integer" numb_of_cont)

      )) 

      (cell_coord     = (range ref_x-numb_of_cont/2.0*0.47 ref_y+2.5+L))

      (dbCreateParamInst pcCellView pcMaster_DFM1 nil cell_coord "MX" 1  list(

                  list( "column" "integer" numb_of_cont)

      )) 

; -- Tap -----------------------------------------------------------------------

      (numb_of_cont   = (round ((Lmax+5)/0.47))-1)

      (cell_coord     = (range ref_x-(Wmax/2.0+4.0) -Lmax/2-2.5))

      (dbCreateParamInst pcCellView pcMaster_TPM1 nil cell_coord "R0" 1  list(

                  list( "row" "integer" numb_of_cont)

      )) 

      (cell_coord     = (range ref_x+(Wmax/2.0+34.0) -Lmax/2-2.5))

      (dbCreateParamInst pcCellView pcMaster_TPM1 nil cell_coord "R0" 1  list(

                  list( "row" "integer" numb_of_cont)

      )) 

; -- Diff ----------------------------------------------------------------------

      if((equal PDPext nil)

      then

      ; -- Do not ADD PDP extentions

            PDPext_diff = 0.0

      else

      ; -- ADD PDP extentions

            PDPext_diff = 1.3

      )

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_DIFF "drawing")

            (list

                (range  ref_x+W/2.0                         ref_y+cor_size)

                (range  ref_x+W/2.0+cor_size                ref_y+0.0)

                (range  ref_x+Wmax/2.0+PDPext_diff          ref_y+0.0)

                (range  ref_x+Wmax/2.0+PDPext_diff          ref_y-1.0)

                (range  ref_x+Wmax/2.0                      ref_y-1.0)

                (range  ref_x+Wmax/2.0                      ref_y-2.5)

                (range  ref_x-Wmax/2.0                      ref_y-2.5)

                (range  ref_x-Wmax/2.0                      ref_y-1.0)

                (range  ref_x-Wmax/2.0-PDPext_diff          ref_y-1.0)

                (range  ref_x-Wmax/2.0-PDPext_diff          ref_y+0.0)

                (range  ref_x-W/2.0-cor_size                ref_y+0.0)

                (range  ref_x-W/2.0                         ref_y+cor_size)

                (range  ref_x-W/2.0                         ref_y+0.0+L-cor_size)

                (range  ref_x-W/2.0-cor_size                ref_y+0.0+L)

                (range  ref_x-Wmax/2.0-PDPext_diff          ref_y+0.0+L)

                (range  ref_x-Wmax/2.0-PDPext_diff          ref_y+1.0+L)

                (range  ref_x-Wmax/2.0                      ref_y+1.0+L)

                (range  ref_x-Wmax/2.0                      ref_y+2.5+L)

                (range  ref_x+Wmax/2.0                      ref_y+2.5+L)

                (range  ref_x+Wmax/2.0               ref_y+1.0+L)

                (range  ref_x+Wmax/2.0+PDPext_diff          ref_y+1.0+L)

                (range  ref_x+Wmax/2.0+PDPext_diff          ref_y+0.0+L)

                (range  ref_x+W/2.0+cor_size                ref_y+0.0+L)

                (range  ref_x+W/2.0                         ref_y+0.0+L-cor_size)

            )

          )

      )

; -- PWELL ----------------------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_PWELL "drawing")

            (list

                (range  ref_x+PWpb+W/2.0              ref_y+PWpb+cor_size)

                (range  40.0                                ref_y+PWpb+cor_size)

                (range  40.0                                0.0-40.0)

                (range  40.0                          0.0+40.0)

                (range  -40.0                               0.0+40.0)

                (range  -40.0                               0.0-40.0)

                (range  40.0                                0.0-40.0)

                (range  40.0                                ref_y+PWpb+cor_size)

                (range  ref_x+PWpb+W/2.0                    ref_y+PWpb+cor_size)

                (range  ref_x+PWpb+W/2.0+cor_size           ref_y+PWpb+0.0)

                (range  ref_x+PWpb+Wmax/2.0           ref_y+PWpb+0.0)

                (range  ref_x+PWpb+Wmax/2.0                       ref_y-PWpb-2.5)

                (range  ref_x-PWpb-Wmax/2.0                 ref_y-PWpb-2.5)

                (range  ref_x-PWpb-Wmax/2.0                 ref_y+PWpb+0.0)

                (range  ref_x-PWpb-W/2.0-cor_size           ref_y+PWpb+0.0)

                (range  ref_x-PWpb-W/2.0                  ref_y+PWpb+cor_size)

                (range  ref_x-PWpb-W/2.0                    ref_y-PWpb+0.0+L-cor_size)

                (range  ref_x-PWpb-W/2.0-cor_size           ref_y-PWpb+0.0+L)

                (range  ref_x-PWpb-Wmax/2.0          ref_y-PWpb+0.0+L)

                (range  ref_x-PWpb-Wmax/2.0                 ref_y+PWpb+2.5+L)

                (range  ref_x+PWpb+Wmax/2.0                 ref_y+PWpb+2.5+L)

                (range  ref_x+PWpb+Wmax/2.0                       ref_y-PWpb+0.0+L)

                (range  ref_x+PWpb+W/2.0+cor_size           ref_y-PWpb+0.0+L)

                (range  ref_x+PWpb+W/2.0                    ref_y-PWpb+0.0+L-cor_size)

            )

          )

      )

; -- PDN ----------------------------------------------------------------------

      if((equal PDNcover t)

      then

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_PDN "drawing")

            (list

                (range  ref_x+Wmax/2.0+0.3                  ref_y-2.5-0.3)

                (range  ref_x-Wmax/2.0-0.3                  ref_y-2.5-0.3)

                (range  ref_x-Wmax/2.0-0.3                  ref_y+2.5+0.3+L)

                (range  ref_x+Wmax/2.0+0.3                  ref_y+2.5+0.3+L)

            )

          )

      )

      else

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_PDN "drawing")

            (list

                (range  ref_x+PDNpb+W/2.0                   ref_y+PDNpb+cor_size)

                (range  ref_x+PDNpb+W/2.0+cor_size          ref_y+PDNpb+0.0)

                (range  ref_x+PDNpb+Wmax/2.0          ref_y+PDNpb+0.0)

                (range  ref_x+PDNpb+Wmax/2.0          ref_y-PDNpb-2.5)

                (range  ref_x-PDNpb-Wmax/2.0                ref_y-PDNpb-2.5)

                (range  ref_x-PDNpb-Wmax/2.0                ref_y+PDNpb+0.0)

                (range  ref_x-PDNpb-W/2.0-cor_size          ref_y+PDNpb+0.0)

                (range  ref_x-PDNpb-W/2.0                 ref_y+PDNpb+cor_size)

                (range  ref_x-PDNpb-W/2.0                   ref_y-PDNpb+0.0+L-cor_size)

                (range  ref_x-PDNpb-W/2.0-cor_size          ref_y-PDNpb+0.0+L)

                (range  ref_x-PDNpb-Wmax/2.0                ref_y-PDNpb+0.0+L)

                (range  ref_x-PDNpb-Wmax/2.0                ref_y+PDNpb+2.5+L)

                (range  ref_x+PDNpb+Wmax/2.0          ref_y+PDNpb+2.5+L)

                (range  ref_x+PDNpb+Wmax/2.0          ref_y-PDNpb+0.0+L)

                (range  ref_x+PDNpb+W/2.0+cor_size          ref_y-PDNpb+0.0+L)

                (range  ref_x+PDNpb+W/2.0                   ref_y-PDNpb+0.0+L-cor_size)

            )

          )

      )

      )

; -- PDP ----------------------------------------------------------------------

      if((equal PDPtop t)

      then

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_PDP "drawing")

            (list

                (range  ref_x+Wmax/2.0+0.3+PDPext_diff      ref_y-1.0-0.3)

                (range  ref_x-Wmax/2.0-0.3-PDPext_diff      ref_y-1.0-0.3)

                (range  ref_x-Wmax/2.0-0.3-PDPext_diff      ref_y+1.0+0.3+L)

                (range  ref_x+Wmax/2.0+0.3+PDPext_diff      ref_y+1.0+0.3+L)

            )

          )

      )

      )

; -- CELLH ----------------------------------------------------------------------

      if((equal CELLHtop t)

      then

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_CELLH "drawing")

            (list

                (range  ref_x+Wmax/2.0+0.3+PDPext_diff+0.15 ref_y-1.0-0.3-0.15)

                (range  ref_x-Wmax/2.0-0.3-PDPext_diff-0.15 ref_y-1.0-0.3-0.15)

                (range  ref_x-Wmax/2.0-0.3-PDPext_diff-0.15 ref_y+1.0+0.3+L+0.15)

                (range  ref_x+Wmax/2.0+0.3+PDPext_diff+0.15 ref_y+1.0+0.3+L+0.15)

            )

          )

      )

      )

; -- DIFF HV ----------------------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_DIFF "hv")

            (list

                (range  40.0                                -40.0)

                (range  40.0                           40.0)

                (range  -40.0                                40.0)

                (range  -40.0                               -40.0)

            )

          )

      )    

; -- CELLM ----------------------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_CELLM "drawing")

            (list

                (range  40.0                                -40.0)

                (range  40.0                           40.0)

                (range  -40.0                                40.0)

                (range  -40.0                               -40.0)

            )

          )

      )

; -- CIRPO ----------------------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_CIRPO "drawing")

            (list

                (range   40.3                               -40.3)

                (range   40.3                                40.3)

                (range  -40.3                                40.3)

                (range  -40.3                               -40.3)

            )

          )

      )

; -- AREAID PIX ----------------------------------------------------------------------

      (setq pcInst

          (dbCreatePolygon pcCellView

            (list lay_PIXID "pixel")

            (list

                (range  40.0                                -40.0)

                (range  40.0                           40.0)

                (range  -40.0                                40.0)

                (range  -40.0                               -40.0)

            )

          )

      )

; -- label ----------------------------------------------------------------------

      (cell_coord     = (range ref_x ref_y))

      (dbCreateLabel pcCellView lay_TEXT cell_coord

            (sprintf nil "W=%.3f\nL=%.3f\nPWpb=%.3f\nPDNpb=%.3f\nPDPtop=%L\nPDPext=%L\nPDNcover=%L\nCELLHtop=%L"

            W L PWpb PDNpb PDPtop PDPext PDNcover CELLHtop  )

            "lowerLeft" "R0" "stick" 1)

; ------------------------------------------------------------------------------

)

)

)

I tried to load the skill code using

load("/home/fg3z7q/Desktop/jfet_fno_SKILL.il")

function jfet_fno_SKILL redefined

t

There's a lot of code to try out there to debug this - I took a quick look, but it would be far easier to try it out as is - without your technology file, I'd have to go through and change all the layer/purpose names to something I have.

So, can you either post the technology file, or if it's not yours to post, can you say which Foundry PDK you're using?

Regards,

Andrew.

 Thank you so much..

That did help a lot.

I   try  this, but get  the  following  error  message.

load("/users/bg027204/CADENCE_SKILL/CCSencapRodPcell.il")
function CCScreateBoxAndLabels redefined
*WARNING* Invalid libId - nil
*WARNING* (DB-270205): dbOpenCellViewByType: must specify either a libName or a contextId.
t