Topic : how many microseconds take a ISR ? is there a way to show it in RIDE7?

Forum : ARM

Original Post
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May 12, 2011 - 8:24pm
Guest

I want to know how many microseconds my Interrupt Service Routine takes

Is there a way RIDE7 shows it to me ?
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May 13, 2011 - 10:17am
Raisonance Support Team

Hi,

The easiest way is to activate a LED upon entry of the ISR and reset it upon exit, then use your favorite oscilloscope to measure the execution time.

Another way is to use the cycle counters if you are using a Cortex-M3 chip. Please refer to http://forum.raisonance.com/viewtopic.php?id=3523 for details.

Best Regards,