https://devzone.nordicsemi.com/f/nordic-q-a/5047/is-it-possible-to-vary-the-pulse-width-of-a-pwm-in-hardwareI need to use a high speed PWM (&gt; 500 kHz) in which I can vary the pulse width. In examples, it&#39;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&#39;t see howen-USTelligent Community 13Fri, 09 Jan 2015 14:11:54 GMThttps://devzone.nordicsemi.com/thread/17775?ContentTypeID=1Fri, 09 Jan 2015 14:11:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7c31b832-5b53-43fb-816f-14e992fba548Stefan Birnir Sverrisson<p>Hi</p> <p>What is done in the <a href="https://github.com/NordicSemiconductor/nrf51-pwm-library">PWM library</a> 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 <a href="https://github.com/NordicSemiconductor/nrf51-pwm-library/tree/master/example_sound">sound example</a> shows how to change the PWM frequency.</p> <p>Or am I perhaps not answering your questions you are asking? If not, can you please clarify what you want to achieve.</p><div style="clear:both;"></div>