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how to create a waveform for each simulation corner with an Ocean script and send it back to ADEXL

Frantz

Hi All,

I'm running simulation with ADEXL at different corner, and for every corner there is a csv file generated, containing simulation data results.

with an ocean script that I include in the ADEXL outputs setup,  i'm reading the files generated at each simulation run at the end of the simulation, and then I generate a waveform from each of those files with the ocean script. Unfortunately it seems like the script reads the file generated at the first corner and then uses the same file  for all the other corners thus generating the same waveform for each corner.

Is there a way to tell the script to run on different corner?

here below is my script 

Regards

Frantz

print("start my ocean script")

 

         if( axlGetCornerNameForCurrentPointInRun() then ccorner = axlGetCornerNameForCurrentPointInRun() else ccorner = "TT_85" ) ; if i'm running only one corner i set the corner name to the default's one

         path = "simulation_path"


         sprintf(file_toread "%ssbr_norm_%s.csv" path ccorner)


        fr = infile(file_toread)

        when( fr
                        while( gets(nextline fr)
                        i++
                       ;I'm counting the number of lines in the files
                        )
                )

        Nlines = i

        i = 0
        j = 0

       close(fr)

        declare( Val[Nlines-1]) ; I declare a vector to save all the data in the file

        tsteps = VAR("tstep")

        tend_plot = tsteps*(Nlines-1)

        tarray = linRg(0 tend_plot tsteps) ; I create a time axis 


        aList1 = '() ; I create a list to save all the data from the file


        fr = infile(file_toread)

        gets(nextline fr)

        for(i 1 Nlines

                   for( j 1 Ntot_taps_rk12

                             fscanf(fr "%f %s" val1 col) sum++

                             if(sum == 10

                                   then aList1 = cons(val1 aList1 )

                               )

                        ) sum = 0


               )

tax = drCreateVec('double tarray) ; i create the time axis on the x
tax -> units = "s" ; i create the label of the x axis
yax = drCreateVec('double aList_rk1) ; i create the y axis using the data read from the file
yax -> units = "V"
adxel_wave_form = drCreateWaveform(tax yax); I create the waveform to be brought out on the adexl gui

axlAddOutputs(list("adxel_wave_form"))

axlOutputResult(adxel_wave_form "adxel_wave_form") ; I bring the waveform into adexl outputs 

close(fr)

print("finished my ocean script")

Parents

  • I think the error is that in your code you create the y vector like this:

     yax = drCreateVec('double aList_rk1) ; i create the y axis using the data read from the file  

    but the rest of the code is creating a variable called aList. So the data you read from the file is not used to create the waveform - and presumably the aList_rk1 variable is a hangover from an earlier experiment.

    It doesn't appear to be due to reading the wrong file (a few debug statements would have told you that, I think). I couldn't really run  your code because I don't know how you're creating this CSV file, but a simple test shows that axlGetCornerNameForCurrentPointInRun() returns the correct corner name for each corner, and so the filename must be different for each corner point, and hence it's reading a different file each time.

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Hi Andrew,

    thanks for your feedback. you are right,  yax sould be = drCreateVec('double aList1). The csv file is created by a verilogA module in my test bench, and I'm passing a string variable from ADEXL to the verilogA module which is exactly the name of the corner. the axlGetCornerNameForCurrentPointInRun() returns the correct corner name of the corner and thus the ocean script is able to read the file and to send to ADEXl the waveform. But when I'want to plot the waveform from ADEXL after the simulation is completed, seems like the ocean script is recompiled and then the  axlGetCornerNameForCurrentPointInRun() is returning a nill and then the default corner name is assigned to ccorner thus the script will find the csv file with the default corner name and plot the same waveform for all the corners.

Reply
  • in reply to Andrew Beckett

    Hi Andrew,

    thanks for your feedback. you are right,  yax sould be = drCreateVec('double aList1). The csv file is created by a verilogA module in my test bench, and I'm passing a string variable from ADEXL to the verilogA module which is exactly the name of the corner. the axlGetCornerNameForCurrentPointInRun() returns the correct corner name of the corner and thus the ocean script is able to read the file and to send to ADEXl the waveform. But when I'want to plot the waveform from ADEXL after the simulation is completed, seems like the ocean script is recompiled and then the  axlGetCornerNameForCurrentPointInRun() is returning a nill and then the default corner name is assigned to ccorner thus the script will find the csv file with the default corner name and plot the same waveform for all the corners.

Children
  • in reply to Frantz

    Hmm, That's a bit of a problem.

    I did try adding an output called "CORNERNAME" which had an expression (axlGetCornerNameForCurrentPointInRun() || "TT_85") and then use calcVal("CORNERNAME") in the script instead, but that doesn't work properly either. It sort of works during the running of the simulation, but gives errors during re-evaluation, and during plotting the calcVal() returns a waveform of all the CORNERNAME values - so that's no good.

    I think this is a bug - when plotting a waveform from an OCEAN script, it has to re-evaluate the script because derived waveforms are not persistently stored; in that case it's vital that axlGetCornerNameForCurrentPointInRun() returns the correct corner when the script is re-evaluated this way.

    So please contact customer support to request that this is corrected. When you do this, if you could post the case number here that would be great as I'd like to follow the progress.

    Regards,

    Andrew.

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