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How can I set the PWM duty on TMS570LS0432 by myself?

yu-chan chang
Prodigy 20 points
Other Parts Discussed in Thread: TMS570LS0432

Hi,

If I don't to use the module to set the PWM duty,

how can I set up the PWM duty for TMS570LS0432?

Ray.

  • 0
    TI__Mastermind 22715 points

    Ray,

    Would you please provide more specifics about your question? You need to use a timer module to generate a PWM. On TMS570LS0432, you can set up the NHET module to generate a PWM, If you have been to the training seminars, you should find some examples in the training material.

    Thanks and regards,

    Zhaohong

  • 0 in reply to Zhaohong Zhang
    Prodigy 20 points

    Zhaohong,

    I want to set PWM  duty by myself,I don't want to use the function of TI to set the duty.

    For example, 

    set_duty_period1.duty=50;
    set_duty_period1.period=66;
    pwmSetSignal(hetRAM1,pwm0,set_duty_period1);

    I can't use it.

    Because use the function of TI,it's spend many time for my ISR.

    So I have to set the PWM duty by myself.

  • 0 in reply to yu-chan chang
    TI__Mastermind 22715 points

    Yu-Chan,

    The NHET module is a microcontroller by itself. I would suggest you first reviewing the userguide and the examples in the training materials to understand how it produces a PWM. Once you understand the operation, you will be able to see what TI software modules intends to do and you can simplify it to reduce the overhead. We may be able to come up more ideas if you can share the details about how you generate the PWM.

    Thanks and regards,

    Zhaohong