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TMS320F2812: PWM interrupt trigger configuration

Brian Wang0
Expert 5440 points
Part Number: TMS320F2812


Hi team,

I am helping with customer to tuning their system. 

With our old device F2812, we noticed that they cannot finish calculate everything with their current ISR frequency. Since they would like to maintan the current PWM frequency, I am suggesting them to reduce the ISR frequency by letting PWM trigger ISR every 2/3 cycle rather than every 1 cycle.

To achieve this, we have a PWM interrupt period register in devices like 28035 and etc, but I did not notice the same register in F2812. Do we support this funcion in F2812?

Regards,

Brian

  • 0
    TI__Mastermind 24095 points

    Hi,

    I don't think that feature exists on F2812.
    What you could probably do is disable interrupts once you enter the ISR and enable the interrupt only after all the calculations are complete.
    This is not ideal, but something that could address this issue.