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TMDSCNCD28335: assigning external control for PWM duty cycle

NursaidP.
Prodigy 30 points

Part Number: TMDSCNCD28335
Other Parts Discussed in Thread: C2000WARE

Hi,

I have a quick question for the eCAP APWM Example which generates PWM with a 50% duty cycle ratio. I want to change this duty cycle from an external signal rather than using a fixed duty cycle ratio.

Thanks in advance

  • 0
    TI__Mastermind 42195 points

    I assume you will be controlling the duty based on the voltage applied to a device pin, for that look at the ADC examples.

    Combine that code with the APWM example. Scale the ADC value into the ACMP register(which is one of the CAPx registers)

    Examples are in C2000ware found here: C:\ti\c2000\C2000Ware_3_04_00_00\device_support\f2833x\examples

    Regards,
    Cody