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TMS320F28386D: ePWM

W Z
Expert 2380 points
Part Number: TMS320F28386D


Normally we enable the usage Peripheral at the start of application.

One question, can we disable the Peripheral  at the runtime?

And enable the Peripheral  at the runtime?

Take the ePWM module as example.

  • 0
    Expert 2380 points

    For the special purpose such as low power consideration, When one interrupt coming, then enable the ePWM module, after the operation, then diasble the ePWM module.

    I have the concering, when disbale the ePWM module ,will the releated PWM registers reset to default value or will they keep the value before diable.

  • +1 in reply to W Z
    TI__Genius 11076 points

    Hello,

    TI does not recommend disabling the ePWM module during runtime, and this is generally not characterized. However, register contents shouldn't be erased by stopping the clock (which is what the SysCTL_disablePeripheral function does). Disabling the ePWM during runtime is most often performed using trip zone one-shot-trip configurations, in my experience.

    For low power, have you considered using the device low power modes? Refer to the device TRM, section 3.11, which describes both of the device low power modes, one of which halts peripheral clocks as well.

    Regards,
    Jason Osborn
    Note: Key takeaways from this post are bolded.

  • 0 in reply to Jason Osborn
    Expert 2380 points

    Thanks for your suggestion and experience!