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Change Timer PWM Output Pulse On the Fly

Question asked by roofie01 on Jan 28, 2015
Latest reply on Jan 29, 2015 by roofie01
Hi,

I have figured out how to change the period of the Timer 3 on the fly by using
TIM3->CNT = someNewValue; and it works good.

However, the duty cycle requires updating as well, set up originally as PWM pulse (TIM_Pulse) on Output Channel 1. Here is the code, where dutyCycle is a value from 0.1 to 0.5:

    TIM_OCInitStructure.TIM_Pulse = (uint16_t)(Period * dutyCycle);
    TIM_OC1Init(TIM3, &TIM_OCInitStructure);

I would like to be able to modify a TIMx register directly to do this. I've looked through the manual but did not see what register(s) I would need to write to do this.

Any help/suggestions? Or do I have to re-run the configuration completely?

Thank you...

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