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Modeling >> Behavioral Models >> writiing verilog -a time data to file
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Message started by openloop on Feb 27^th, 2017, 2:13pm

Title: writiing verilog -a time data to file
Post by openloop on Feb 27^th, 2017, 2:13pm

I need to find a command for Verilog -a that will let me write the time that a crossing event occurs. $realtime seems close, but how do I get this into a file for processing later?

Title: Re: writiing verilog -a time data to file
Post by Geoffrey_Coram on Feb 28^th, 2017, 12:21pm

openloop wrote on Feb 27^th, 2017, 2:13pm:

I need to find a command for Verilog -a that will let me write the time that a crossing event occurs. $realtime seems close, but how do I get this into a file for processing later?

You should use $abstime instead of $realtime, which is not officially supported in the analog context.

You should be able to use $fstrobe or $fwrite to write to a file.

Title: Re: writiing verilog -a time data to file
Post by Ken Kundert on Feb 28^th, 2017, 4:41pm

With a crossing event, you should also use last_crossing along with cross to get the best accuracy. See time interval measurement for a template.

-Ken

Title: Re: writiing verilog -a time data to file
Post by openloop on Mar 1^st, 2017, 6:43am

Thanks all for helping.