What is the recommended way to use nRF52840 advanced PWM sequence and looping functions with nRF Connect SDK v2.9.0?

[Ken58]

Hi,

I am developing an application for an nRF52840 using nRF Connect SDK v2.9.0.  The application currently uses the Zephyr driver for simple PWM functions on several GPIOs. Now, I need to add PWM sequences and looping as supported by the SOC on other GPIOs. Correct me if I am wrong, but I don't think the Zephyr driver can support the Nordic PWM module in this way.

What is the best way to do this? Some questions that come to mind: Can the Zephyr PWM driver and the nrfx PWM driver live together in the same application? Must I chose one driver or the other? How does DeviceTree manage this? I'm sure I'll have more questions once the discussion is opened.

Thank you,

Ken

[Sigurd]

Hi!

The Zephyr driver API does not have the full functionality that is offered in nrfx pwm API.

So one option it to use nrfx directly. I would not recommend trying to mix and use both APIs.

https://github.com/zephyrproject-rtos/hal_nordic/blob/master/nrfx/samples/src/nrfx_pwm/common_mode/main.c

[Ken58]

Hi Sigurd,

Do you have any response to why the sample application you mentioned will not build?

Thanks,

Ken