How to load viaGetViaOptions Function inside PCELL

here is a small code where I'm using it

pceDefinePcell(

.

.

techFile = techGetTechFile(ddGetObj("tsmcN3"))

metalWidth = techGetSpacingRule(demoTfId "minWidth" "M17")
metalLength = techGetSpacingRule(demoTfId "minArea" "M17")/metalWidth

constraintGroupId = cstFindConstraintGroupIn(techFile "virtuosoDefaultSetup")
myViaOptions = viaGetViaOptions(constraintGroupId)
myViaOptions~>createInRoute = nil
myViaOptions~>createAsROD = t
myViaOptions~>rodName = "sourceVias"

);pceDefinePcell

Esteban Saavedra said:

I'm trying to use the function viaGetViaOptions inside a pcell, but I get an error that the function is not defined, how can I define it?

You can't. The via* functions are not supported in PCells. This is from the Virtuoso Parameterized Cell Reference manual:

Recommended and Supported SKILL Functions for Pcells
When you create SKILL routines within Pcells, use only the following functions:

• The SKILL functions documented in Cadence SKILL Language Reference; for example, car, if, foreach, sprintf, while.
• SKILL functions from the db, dd, cdf, rod, tech, abe, cst, and tx families.
• There are a few "pc" functions too - covered in the Virtuoso Parameterized Cell Reference manual

Thanks for the answer, then, there is an funtion that is supported by pcells to create the vias similar to viaGenerateViasInArea?

No. There's dbCreateVia, but you have to do the computation yourself of the parameters. The reason being that the via engine has to take many things into consideration and this could change over time (as new functionality comes on board), but within a PCell you need consistency between releases, so sadly there's no access to the via engine functionality within a PCell.

We do (in the PCell Designer tool) have a via fill command which does this - it has the ability to fill a given region with vias.

Andrew