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Hierarchy tree in SKILL from normal schematic, config based schematic and layout

skillprogramme

Hi!

I am working on some code to return the hierarchy below a given cell, irregardless of the cell being a layout or schematic and irregardless of the eventual schematic being normal or config based. In the solution provided by Cadence (linked at end of post), this is done through GUI forms. I would however like to do everything in SKILL, without any open window sessions (other than CIW). 

In the solution it is checked if the schematic has a config view by calling deGetConfigId with window_id as argument. As I would like to do everything from SKILL, I need some other function to do this. Is it any function that can return if a schematic has a related config?

As well, the solution states that normal schematic (and thus layout) trees (no related config, that is) can be printed in non-GUI mode by invoking CCSschTree directly from CIW. It does not say anything about it being possible to call the config based equivalent CCShdbSchTree from CIW. Would it be possible to do this and if not, why?

Cheers,
Max
 

Related Cadence solution:
https://support.cadence.com/apex/homePage 

Parents
  • Andrew Beckett

    Hi Max,

    You can blame the author of the solution (it was me...) for not including that example in the text - that's mainly because the solution originally dates from before I added config support back in 2006). It does however mention the function in the comments at the top of the code - as a perfectly acceptable function to call from SKILL. So yes, you can do that.

    You call it with the lib/cell/view of the config view. If you've opened a config view (along with the configured schematic), then you can get the "hdb" handle using deGetConfigId as you've seen. You can then use:

    hdb=deGetConfigId(hiGetCurrentWindow())
    confLib=hdbGetLibName(hdb)
    confCell=hdbGetCellName(hdb)
    confView=hdbGetViewName(hdb)

    which will get you the lib/cell/view of the config view associated with that configured schematic.

    I suspect that you're asking for a way to do this without opening the schematic. Actually what you're opening graphically is the configured schematic - you tell it the config view, and from that it knows the top lib/cell/view and shows you the schematic.

    However, if  you just open a schematic directly (either graphically or with dbOpenCellViewByType()), you cannot know which config is "related". The schematic doesn't have info about related configs - because there could be 10 different config views  for the same top schematic. It's the other way around - the config says which schematic it is configuring.

    So you can call this function with the lib/cell/view of a config that you want to use.

    Note that the version of the code in the solution doesn't support layout views - only schematic. I have a newer version (version 1.9; the version on the support site is 1.5) which supports layout views as well. I'll get it uploaded (once I've sorted out a permission problem).

    Kind Regards,

    Andrew

Reply
  • Andrew Beckett

    Hi Max,

    You can blame the author of the solution (it was me...) for not including that example in the text - that's mainly because the solution originally dates from before I added config support back in 2006). It does however mention the function in the comments at the top of the code - as a perfectly acceptable function to call from SKILL. So yes, you can do that.

    You call it with the lib/cell/view of the config view. If you've opened a config view (along with the configured schematic), then you can get the "hdb" handle using deGetConfigId as you've seen. You can then use:

    hdb=deGetConfigId(hiGetCurrentWindow())
    confLib=hdbGetLibName(hdb)
    confCell=hdbGetCellName(hdb)
    confView=hdbGetViewName(hdb)

    which will get you the lib/cell/view of the config view associated with that configured schematic.

    I suspect that you're asking for a way to do this without opening the schematic. Actually what you're opening graphically is the configured schematic - you tell it the config view, and from that it knows the top lib/cell/view and shows you the schematic.

    However, if  you just open a schematic directly (either graphically or with dbOpenCellViewByType()), you cannot know which config is "related". The schematic doesn't have info about related configs - because there could be 10 different config views  for the same top schematic. It's the other way around - the config says which schematic it is configuring.

    So you can call this function with the lib/cell/view of a config that you want to use.

    Note that the version of the code in the solution doesn't support layout views - only schematic. I have a newer version (version 1.9; the version on the support site is 1.5) which supports layout views as well. I'll get it uploaded (once I've sorted out a permission problem).

    Kind Regards,

    Andrew

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