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Simulators >> Circuit Simulators >> ocean script data access question
https://designers-guide.org/forum/YaBB.pl?num=1325724957

Message started by hiSkill_11 on Jan 4^th, 2012, 4:55pm

Title: ocean script data access question
Post by hiSkill_11 on Jan 4^th, 2012, 4:55pm

I encounter a problem when i run pss pnoise with ocean script.
I can plot the waveform with the command plot(i("/R0/PLUS") ?result "pss-tran.pss")) in the CIW.
But when I run the i("/R0/PLUS") ?result "pss-tran.pss") it shows the warning as following.
>>
WARNING (OCN-6055): The output '/R0/PLUS' you selected does not exist. Type outputs() to see
the list of available outputs or type help('i) for more information on the 'i' command.
nil

So, i can't further clip and average the waveform of i("/R0/PLUS") ?result "pss-tran.pss").
It gives the error like
>>
*Error* clip: can't handle clip(nil 9.9e-05 0.0001).

But the pss and pnoise analysis are completed sccessfully. and I can plot phase noise and pss-tran result.
The problem is that I can not clip the current waveform of /R0/PLUS and average it since it returns nil.

How can i fix it? I post the code here.

....
resultsDir(strcat(resultDir "/" designName "/spectre/config"))
....
openResults(strcat(resultDir "/" designName "/spectre/config/psf"))

when(v("/extal" ?result "pss-fd.pss")

ibias = average(clip(i("/R0/PLUS" ?result "pss-tran.pss") 0.000099 0.0001))
....

More interesting thing is that I can run this script successfully with presimulation netlist(schematic view).
But when I run the post simulation using config view, It failed.

Title: Re: ocean script data access question
Post by boe on Jan 5^th, 2012, 2:13am

hiSkill_11 wrote on Jan 4^th, 2012, 4:55pm:

...
More interesting thing is that I can run this script successfully with presimulation netlist(schematic view).
But when I run the post simulation using config view, It failed.

Probably your "post" view does have a different name for R0.

- B O E

Title: Re: ocean script data access question
Post by hiSkill_11 on Jan 6^th, 2012, 1:37am

boe wrote on Jan 5^th, 2012, 2:13am:

hiSkill_11 wrote on Jan 4^th, 2012, 4:55pm:

...
More interesting thing is that I can run this script successfully with presimulation netlist(schematic view).
But when I run the post simulation using config view, It failed.

Probably your "post" view does have a different name for R0.

- B O E

The R0 is from analogLib for measure the current purpose, not layout devices. So, for pre sim and post sim, they see the same R0. Thanks.
In addition, when I open a new CIW, and execute the script, it works fine.
But if I do something in the CIW like edit schematic, layout, simulation, then execute the script, it possiblely happened.

Title: Re: ocean script data access question
Post by boe on Jan 6^th, 2012, 4:52am

hiSkill_11 wrote on Jan 4^th, 2012, 4:55pm:

For some reason you had no result for i(R0/PLUS)...
Maybe a bug if restarting of CIW solved it.
- B O E