How to implement simple PWM

[CWallach]

I just want a simple and clear  PWM driver to generate a duty cycle on a GPIO pin - 25% on and 75% off.   Just that.   What is the most power efficient method?

The example PWM project is overly complicated and obscure.

Using SDK 15.2 and nRF52832.

Thanks

[Kenneth]

Maybe this one also can be considered:

https://devzone.nordicsemi.com/f/nordic-q-a/28081/is-there-a-simple-example-how-to-set-a-pwm-driver