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

[Nguyen Hoan Hoang]

try this one https://github.com/IOsonata/IOsonata/blob/master/ARM/Nordic/nRF52/src/pwm_nrf52.cpp