Deleting Schematic instance and instantiating another device on the same origin

Vijay,

You'll want instId~>xy to get the location of the existing instance. You will also want instId~>orient to get the orientation of the instance too (so the new instance has the same rotation).

To find the existing instance, if you know the name, you can use dbFindAnyInstByName, and it would be dbDeleteObject to delete it.

Regards,

Andrew.

Hi Andrew,

Thank you for your quick and accurate response. I have to find specific devices and copy over some of the existing parameters to the new instantiations. 

I am planning to use dbOpenCellViewByType and use dbCreateInst to create the instance. And then update the specific parameters with the parameters I had saved previously.

One quick question I have is, will the call-backs be triggered if I do the step mentioned above? Or should I open it graphically to trigger the call-backs?

 Regards,

Vijay

Hi Vijay,

If you instantiate devices using SKILL, or update instance parameters using SKILL then callbacks are not triggered, they are only triggered when using the Edit Object Properties form or Add Instance form and interacting with the CDF properties there, so you will most likely need the solution to trigger the CDF callbacks procedurally with SKILL.

Hope this helps,

Lawrence.

Hi Lawrence,

Thank you for the quick help! I will explore the direction you have pointed to.

Thanks,

Vijay

Hi Lawrence,

I tried using the callback function, but it was too slow. Since I know what parameters to change I thought I will write a custom script, but I am getting stuck with some errors in saving the file. Would you please help to resolve that issue?

   if(cv=geOpen(?lib libName ?cell cell~>name ?view view~>name ?mode "a") then
       wId =hiGetCurrentWindow()
       thisCell=geGetWindowCellView()
       foreach(inst thisCell~>instances
           ;---Process relevant instances
        ;
        if(member(inst~>cellName InstList) then         
       ;---Change param
       ;
       printf("\nTrigger %s" inst~>cellName)
       geSelectFig(inst)
             schHiObjectProperty()
             sprintf(str "ParamOrg = schObjPropForm->%s->value" SelParam)
       j=evalstring(str)
             ;
       sprintf(str "schObjPropForm->%s->value = TempVal" SelParam)
       j=evalstring(str)            
       hiFormDone(schObjPropForm)
       ;
       schHiObjectProperty()
             sprintf(str "schObjPropForm->%s->value = ParamOrg" SelParam)
       j=evalstring(str)                
       hiFormDone(schObjPropForm)
      );if member
     );foreach inst
     schCheck( thisCell )
           geSave( thisCell )
     hiCloseWindow(wId)
   );if cv

Thanks,

Vijay

 Vijay,

Try using the code that Lawrence pointed you to (this was written by me, BTW), and use the ?order argument to specify the parameters you are changing. With many PDKs specifying just a single parameter is sufficient because all the callbacks are essentially the same.

So you could do:

CCSinvokeInstCdfCallbacks(instId ?order list("w"))

to just invoke the "w" callback on the instance. The default behaviour is to call it for every parameter - sometimes this can be rather expensive if the callbacks are long, and if the callbacks are really common to all parameters, you're just repeating the same computation over and over again.

Trying to interact with a form as you are doing in your code will be much harder, because something maybe blocking (I really wouldn't go down that route as it can get messy quickly).

Regards,

Andrew.

Hi Andrew,

Works like a magic! Thanks a lot for your valuable suggestions and help!

Thanks,

Vijay

Hi All,

We used skill to change the schematic instances from one process(old) to another one process(new).

We want to keep the origin and orientation of the old process and put it on the new process.

We're having a hard time doing this.Can someone help us.

Thanks,

Reinice

Hi Vijay,

Thanks for your reply

I've tried the previous posts. It's working. I think I have to rephrase my question.

For example the old process has it's origin in the S(Source of nch_33) terminal but the new process has it's origin in the BULK(Bulk of nch_hvt)

How can I keep the position of the old process to the new process?

Thanks,

Reinice