From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Daryl M" <glenda@mc2research.org>
To: <9fans@9fans.net>
Date: Thu,  8 May 2014 08:19:31 -0700
Message-ID: <015a01cf6ad0$f3a59290$daf0b7b0$@mc2research.org>
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Subject: Re: [9fans] OT: hard realtime, timing diagram GUI.
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Steve,

The only code timing-diagram-like tool I am aware of is Windriver's WindView
for VxWorks.

I have successfully used digital logic timing diagrams in the past to view
task timing and interaction.  They are especially useful for multiprocessor
systems.

I think the determining factor would be the metadata you want associated
with transitions.  (channel wait, timer interrupt, etc.)
Also, how precise you want the timing to be.  I usually use the TSC (Time
Stamp Counter) on Intel processors which gives very fine-grained timing
without fear of the counter wrapping.

Cheers,
Daryl

-----Original Message-----
From: Steve Simon <steve@quintile.net>
Sent: Thursday, May 08, 2014 2:36 AM
To: 9fans@9fans.net
Subject: [9fans] OT: hard realtime, timing diagram GUI.

Hi,

Just trying to tap the collective brains fo the plan9 community.

Anyone done any hard realtime programming? I am looking for a simple GUI
tool which will read a text file I can generate from my code and display a
timing diagram. This should allow either events triggered by the clock, by
an interrupt, or by another event.

Anyone know of such a tool? I see masses of tools for drawing digital logic
timing diagrams but nothing that seems to give me what I need for realtime
code.

Thanks,

-Steve