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How to get the port name of a selected cell view?

HongJian

I am trying to get the symbol port name through SKILL code. These are what I tried so far

cv = geGetEditCellView()
db:0x6ae7e71a
cv->cellName
"folded_cascode_ota"
cv~>portOrder
nil
cv~>ports
nil

 

How do I get the symbol port name so that I can double check the symbol port, whether it is connected to a net that has the same name?

For example, I wish to get a list of port which is AVCCAUX, AVSS, ibas_50u_ic, pd_1p8v, pdb_1p8v, vinn, vinp. This later will help me compare what nets are connected to each port for chekcing.

  • cv~>terminals~>name

    Or if it's an instance, you'd do:

    instId~>master~>terminals~>name

    Or if it's in a schematic which has been extracted, you could use the instTerms:

    foreach(instTerm instId~>instTerms
      printf("%s connected to %s\n" instTerm~>name instTerm~>net~>name)
    )

    Andrew

  • in reply to Andrew Beckett

    Hi Andrew, thanks a lot for the reply.

    Are there any ways I can 

    1. Click any instance on the schematic 

    2. List out all the port name (for example pd_1p8V ...)

    3. Check the net connected to the corresponding port (for example, it is pd_vccaux for pd_1p8V port)

    4. Just list out the ports that have different net name

    This will be helpful to highlight any unintended mistake in connection. 

    Based on the skill function given, seems like i need to descend down to get the port name first? What about checking the net connected to the corresponding port?

  • in reply to HongJian

    The code I showed above pretty does what you want:

    Andrew Beckett said:

    foreach(instTerm instId~>instTerms
      printf("%s connected to %s\n" instTerm~>name instTerm~>net~>name)
    )

    You could just precede this with:

    instId=car(geGetSelSet())

    which would use the selected instance - it would then print out all the terminal names of that instance and the connected net names. If you wanted to just show those which are different (although of course it's not a requirement that the names match in general):

    instId=car(geGetSelSet())
    foreach(instTerm instId~>instTerms
      unless(instTerm~>net~>name==instTerm~>name
        printf("%s connected to %s\n" instTerm~>name instTerm~>net~>name)
      )
    )

    Andrew

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