Can I see the processor view when debugging with simulator?

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steve17
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Posted by steve17: Thu. Nov 19, 2020 - 10:52 AM
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If so, how?  Or must I hook up my hardware debugger?  I just want to count machine cycles.

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Tools, Atmel Studio (AVR-related), solved
Last Edited: Thu. Nov 19, 2020 - 10:04 PM
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Gold Markclawson
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Posted by clawson: Thu. Nov 19, 2020 - 11:29 AM
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will get you this:

 

 

And, yes, this ie very commonly used when you want to count cycles. As you may know you can right click "cycle counter" to reset the count before running to a breakpoint at the end of some segment you want to measure.

 

If you set "Frequency" to what your CPU will actually run at it will also tell you in us or ms how long a segment took to execute.

Last Edited: Thu. Nov 19, 2020 - 11:31 AM
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avrcandies
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Posted by avrcandies: Thu. Nov 19, 2020 - 03:03 PM
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Does your time (cycles) depend upon external inputs, or is it pure code?   Certainly inputs (such as polling) could affect the results.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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steve17
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Posted by steve17: Thu. Nov 19, 2020 - 06:22 PM (Reply to #3)
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avrcandies wrote:

Does your time (cycles) depend upon external inputs,

No.  I just forgot how to get the processor status window to appear.  Now I got it.

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awneil
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Posted by awneil: Thu. Nov 19, 2020 - 10:00 PM (Reply to #4)
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steve17 wrote:
Now I got it.

Jolly Good! Now please mark the solution - see Tip #5 in my signature, below:

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steve17
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Posted by steve17: Sat. Nov 21, 2020 - 10:02 PM
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I got it to work just fine.  Apparently it only counts cycles when using the simulator, but that's okay. 

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avrcandies
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Posted by avrcandies: Sat. Nov 21, 2020 - 10:22 PM
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Apparently it only counts cycles when using the simulator,

It would take specialized in-chip hardware to do otherwise; since you want the "chip mode" to run in its normal real-time wetting.  In the old days, you had special bond-out emulator chips that might have included extra such goodies.  

Those emulators/debuggers often cost $5000 to $15000 & we had several.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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steve17
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Posted by steve17: Sat. Nov 21, 2020 - 11:13 PM
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avrcandies wrote:
It would take specialized in-chip hardware to do otherwise
Yeah, I figured it was something like that.  I probably knew that years ago, but in my old age I forget a lot.

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avrcandies
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Posted by avrcandies: Sat. Nov 21, 2020 - 11:28 PM
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I probably knew that years ago, but in my old age I forget a lot.

Maybe you need someone to flash you & get those neurons moving.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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steve17
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Posted by steve17: Sun. Nov 22, 2020 - 12:05 AM
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electroshock therapy seems a bit much.  I'd rather just be stupid.  smiley

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Gold Markclawson
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Posted by clawson: Sun. Nov 22, 2020 - 12:54 PM
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The way you'd usually measure execution time in real hardware is using an IO pin and a scope. ;-)

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steve17
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Posted by steve17: Sun. Nov 22, 2020 - 08:21 PM
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Yeah.  I don't need it.  I got all I need. Thanks.

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