Is it possible to vary the pulse width of a PWM in hardware?

[cb8675309]

I need to use a high speed PWM (> 500 kHz) in which I can vary the pulse width. In examples, it's handled in software which is too slow.

Is there any way to set a pin on a compare event and clear it on another? From the documentation I don't see how this would work. If it can't be done, do you plan on implementing this in a future version of the chip? Seems like a significant oversight.

Is there something I'm missing here?

Thanks

Colin

[Stefan Birnir Sverrisson]

Hi

What is done in the PWM library is that the hardware maintains a fixed dutycycle PWM without using the CPU, by using TIMER+PPI+GPIOTE. You need the CPU however to change the PWM duty cycle. If you need to change the PWM frequency (the pulse width), it should be doable 500-1000 times per second with the PWM library. Is that too slow for your scenario? The sound example shows how to change the PWM frequency.

Or am I perhaps not answering your questions you are asking? If not, can you please clarify what you want to achieve.