How does one use PWM?

tristan · October 2022

Hi,

Is there any guidance available on how to use PWM on GPIO for the AML-S905X-CC?

I had a look under /sys/class/pwm, but that directory appears empty, at least in Ubuntu 22.0.4 LTS.

Thanks!

tristan · October 2022

I've been fine for now implementing PWM in software.

However, I did fine the Libre Computer Wiring Tool, which does allow you to overlay the PWM pins by doing:

./ldto enable pwm-e

The filesystem interface then appears under /sys/class/pwm.

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