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how to write a SKILL code for PCELL powergrid

techrddyz

Hi all,

I am new to SKILL coding. I am trying to create a power grid PCELL using SKILL. The user can switch on and off layers/vias depending on needs. I found some SKILL code online and modified to meet my need. Now, i can create metals (ex. M3) but I dont know how i can turn it on and off when the user checks on/off the checkbox on the 'Edit Instance Properties' window. please see my code below. 

procedure(powerGridPcell(cv "dnn")
let( (rectRodObj)

Nx=7
temp = 1
for(i 0 Nx
temp = 0.63 * i
rectRodObj = rodCreateRect(
?cvId cv
?layer list("M3" "drawing")
?bBox list(0:temp+0.125 5.04:temp+0.505)
)
);End for i

); let
); procedure


;; Create the PCell, the "drawing routine" is encapsulated in the
;; powerGridPcell function which does all the work

pcDefinePCell(
list(ddGetObj("test_rudy") "power_grid_pcell" "layout")
(
)
let( ((cv pcCellView))
powerGridPcell(cv)
); let
)

;; Create the CDF for the 'l' and 'w' parameters
let( (cellId cdfId)
when(cellId = ddGetObj("test_rudy" "power_grid_pcell")
;; if the cell CDF already exists, delete it
when( cdfId = cdfGetBaseCellCDF(cellId)
cdfDeleteCDF(cdfId)
)
;; create the base cell CDF
cdfId = cdfCreateBaseCellCDF(cellId)
;; create the parameters
cdfCreateParam( cdfId
?name "visibilityM3"
?prompt "M3"
?defValue "true"
?type "boolean"
?display "t"
)

cdfSaveCDF(cdfId)
); when
); let

Thanks

Parents
  • techrddyz

    Hi Andrew,

    please find below my code. Based on what SkillUser said above, to turn on/off layers i just need to create  PCell parameters that match cdf parameters. i guess thats what you mean by 'the code that does the conditional part'. I can turn on/off metal layers  but cannot turn on/off vias. You can copy the code below and run it. Thanks alot for you help.

    ;; Create the PCell, the "drawing routine" is encapsulated in the
    ;; powerGridPcell function which does all the work
    pg_layer_list = list(
    list("M1")
    list("M2" "V1")
    )
    coordIndex = 1
    ;;create metal layers
    procedure(powerGridPcell_metal(cv drawMetal rowCol metalLayer)
      let( (rectRodObj)
          for(i 0 rowCol
    when(drawMetal == t
     case(metalLayer
        ("M1"
        coordIndex = 0.63 * i
        rectRodObj = rodCreateRect(
    ?cvId    cv
    ?layer   list(metalLayer "drawing")
    ?bBox    list(0:coordIndex+0.125 5.04:coordIndex+0.505)
        )
        )
    ("M2"
        coordIndex = 0.63 * i
        rectRodObj = rodCreateRect(
    ?cvId    cv
    ?layer   list(metalLayer "drawing")
    ?bBox    list(coordIndex+0.125:0 coordIndex+0.505:5.04)
        )
        )
      );case
    ); when
          );End for i
      ); let
    ); procedure
    ;create vias
    procedure(powerGridPcell_via(cv v_layer row col v_xStart1 v_yStart1 v_xStart2 v_yStart2 v_xPitch v_yPitch v_w v_l v_row v_col rowPitch colPitch)
       for(i 0 row ;row
          for(j 0 col ;col
    if(mod(j 2) == 0 && mod(i 2) == 0 then
    tempx1 = colPitch * (j/2) + v_xStart1
    tempy1 = rowPitch * (i/2) + v_yStart1
    dbCreateViaShapeArray(cv v_layer nil tempx1 tempy1 v_xPitch v_yPitch v_w v_l v_row v_col)
    else
    tempx1 = colPitch * (j/2) + v_xStart2
    tempy1 = rowPitch * (i/2) + v_yStart2
    dbCreateViaShapeArray(cv v_layer nil tempx1 tempy1 v_xPitch v_yPitch v_w v_l v_row v_col)
    );if
          );for
       );for
    )
    pcDefinePCell(
      list(ddGetObj("test_rudy") "power_grid_pcell_test" "layout")
      (
    (M1 t)
    (V1 t)
    (M2 t)
      )
      let( ((cv pcCellView))  
    powerGridPcell_metal(cv M1 7 nth(0 nth(0 pg_layer_list)))
    powerGridPcell_metal(cv M2 7 nth(0 nth(1 pg_layer_list)))
    powerGridPcell_via(cv nth(1 nth(1 pg_layer_list)) 7 7 0.195 0.195 0.825 0.825 0.16 0.16 0.08 0.08 2 2 1.26 1.26)       ;V1
      ); let
    )
    ;; Create the CDF 
    let( (cellId cdfId)
      when(cellId = ddGetObj("test_rudy" "power_grid_pcell_test")
        ;; if the cell CDF already exists, delete it
        when( cdfId = cdfGetBaseCellCDF(cellId)
          cdfDeleteCDF(cdfId)
        )
        ;; create the base cell CDF
        cdfId = cdfCreateBaseCellCDF(cellId)
        ;; create the parameters
        cdfCreateParam( cdfId
          ?name    "M1"
          ?prompt  "M1"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        cdfCreateParam( cdfId
          ?name    "V1"
          ?prompt  "V1"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        cdfCreateParam( cdfId
          ?name    "M2"
          ?prompt  "M2"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        
        cdfSaveCDF(cdfId)
      ); when
    ); let
Reply
  • techrddyz

    Hi Andrew,

    please find below my code. Based on what SkillUser said above, to turn on/off layers i just need to create  PCell parameters that match cdf parameters. i guess thats what you mean by 'the code that does the conditional part'. I can turn on/off metal layers  but cannot turn on/off vias. You can copy the code below and run it. Thanks alot for you help.

    ;; Create the PCell, the "drawing routine" is encapsulated in the
    ;; powerGridPcell function which does all the work
    pg_layer_list = list(
    list("M1")
    list("M2" "V1")
    )
    coordIndex = 1
    ;;create metal layers
    procedure(powerGridPcell_metal(cv drawMetal rowCol metalLayer)
      let( (rectRodObj)
          for(i 0 rowCol
    when(drawMetal == t
     case(metalLayer
        ("M1"
        coordIndex = 0.63 * i
        rectRodObj = rodCreateRect(
    ?cvId    cv
    ?layer   list(metalLayer "drawing")
    ?bBox    list(0:coordIndex+0.125 5.04:coordIndex+0.505)
        )
        )
    ("M2"
        coordIndex = 0.63 * i
        rectRodObj = rodCreateRect(
    ?cvId    cv
    ?layer   list(metalLayer "drawing")
    ?bBox    list(coordIndex+0.125:0 coordIndex+0.505:5.04)
        )
        )
      );case
    ); when
          );End for i
      ); let
    ); procedure
    ;create vias
    procedure(powerGridPcell_via(cv v_layer row col v_xStart1 v_yStart1 v_xStart2 v_yStart2 v_xPitch v_yPitch v_w v_l v_row v_col rowPitch colPitch)
       for(i 0 row ;row
          for(j 0 col ;col
    if(mod(j 2) == 0 && mod(i 2) == 0 then
    tempx1 = colPitch * (j/2) + v_xStart1
    tempy1 = rowPitch * (i/2) + v_yStart1
    dbCreateViaShapeArray(cv v_layer nil tempx1 tempy1 v_xPitch v_yPitch v_w v_l v_row v_col)
    else
    tempx1 = colPitch * (j/2) + v_xStart2
    tempy1 = rowPitch * (i/2) + v_yStart2
    dbCreateViaShapeArray(cv v_layer nil tempx1 tempy1 v_xPitch v_yPitch v_w v_l v_row v_col)
    );if
          );for
       );for
    )
    pcDefinePCell(
      list(ddGetObj("test_rudy") "power_grid_pcell_test" "layout")
      (
    (M1 t)
    (V1 t)
    (M2 t)
      )
      let( ((cv pcCellView))  
    powerGridPcell_metal(cv M1 7 nth(0 nth(0 pg_layer_list)))
    powerGridPcell_metal(cv M2 7 nth(0 nth(1 pg_layer_list)))
    powerGridPcell_via(cv nth(1 nth(1 pg_layer_list)) 7 7 0.195 0.195 0.825 0.825 0.16 0.16 0.08 0.08 2 2 1.26 1.26)       ;V1
      ); let
    )
    ;; Create the CDF 
    let( (cellId cdfId)
      when(cellId = ddGetObj("test_rudy" "power_grid_pcell_test")
        ;; if the cell CDF already exists, delete it
        when( cdfId = cdfGetBaseCellCDF(cellId)
          cdfDeleteCDF(cdfId)
        )
        ;; create the base cell CDF
        cdfId = cdfCreateBaseCellCDF(cellId)
        ;; create the parameters
        cdfCreateParam( cdfId
          ?name    "M1"
          ?prompt  "M1"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        cdfCreateParam( cdfId
          ?name    "V1"
          ?prompt  "V1"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        cdfCreateParam( cdfId
          ?name    "M2"
          ?prompt  "M2"
          ?defValue    "true"
          ?type    "boolean"
          ?display    "t"
        )
        
        cdfSaveCDF(cdfId)
      ); when
    ); let
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