How to use Tcl command to get expression value from a AMS simulation?

You can't do it directly. You could use an OCEAN script at the end to get the maximum, or you could write a Verilog-AMS module which followed a waveform and output the maximum, say.

Andrew.

Thanks Andrew, is it possible to use simvision Tcl command interface? 

Andrew Beckett said:

You can't do it directly. You could use an OCEAN script at the end to get the maximum, or you could write a Verilog-AMS module which followed a waveform and output the maximum, say.

Andrew.

Good point. You could use:

set expression {range_max(top.dacOut, 0 ns, 40000 ns)}
condition set -using myymax -expr $expression
window new WaveWindow
waveform add -signals {myymax}

The range_max function in the simvision calculator can be used to find the ymax.

Andrew.

Andrew Beckett said:

Good point. You could use:

set expression {range_max(top.dacOut, 0 ns, 40000 ns)}
condition set -using myymax -expr $expression
window new WaveWindow
waveform add -signals {myymax}

The range_max function in the simvision calculator can be used to find the ymax.

Andrew.

 

Thanks Andrew for the help. It looks like the second command doesn't work. Simvision pops "Error: bad condition name "myymax""

Besides, do you now how to get the number for post-processing intead of plotting to a simvision waveform? 

Regards,

QS

Sorry, that should have been:

condition new -name myymax -expr $expression

Rather than condition set. I copied the wrong line from somewhere. You might want to preceed it with:

catch {condition delete myymax}

in case the condition is already created.

Andrew.

Not really sure (not that familiar with simvision scripting). 

You can send to a register window, using:

set regid [window new RegisterWindow]
register add -using $regid myymax

But that's probably not what you want either. You may need to contact customer support to get an answer from somebody more knowledgeable than me in simvision - I was just reading the manual :-) . Or it may not be possible...

Andrew.