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ePWM and interrupt

süleyman fatih kara
Intellectual 675 points

I have a question about one of the example code in controlsuit named "epwm_updown_aq". There is an interrupt function that updates the Compare register values of the ePWMs.

Why do we need that? We can make the same thing on the main while loop. What is the advantage of the interrupt function?

Thank you

Have a nice day.

  • 0
    Guru 192875 points

    Hi Fatih,

    fatih kara said:
    Why do we need that? We can make the same thing on the main while loop. What is the advantage of the interrupt function?

    Yes, why not! You can write the same in the main too but what if your epwm control is the most important/ top priority task? You need your first decision to alter the duty rather than doing some other computations!

    Hence, interrupt is very much necessary when it comes to power electronics based apps where ADCs and PWMs are heart of the system.

    Regards,

    Gautam