Changes any Peripheral pins configuration at runtime (after build and flash firmware)

[Siddharth Kachhia]

Hi,
I have gone through https://docs.zephyrproject.org/latest/hardware/pinctrl/index.html#pin-control doc and zephyr\samples\boards\nrf\dynamic_pinctrl sample code.

zephyr provides support of dynamic pinctrl at build time with define alternatives pins in overlay file.

I want to define alternatives pins in file at run time(not at build time) and configured that defined pins on next reboot. Fundamentally, I want build and flash firmware one time then after I can able to change pins without build and flash again.

Is this possible using dynamic pinctrl feature?

Any other way do this with zephyr dts files?

[Elfving]

Hello Siddarth,

This previous response by a coworker of mine summarizes it nicely.

This is in fact possible, and the dynamic pinctrl sample you have there shows how its done. The problem is that you can't uninitialize a device while running, so you'll have to reboot for the changes to take effect (which also the sample shows how could be done). If this doesn't work for you, you would have to use nrfx drivers.

Regards,

Elfving

[Siddharth Kachhia]

Hi Elfving,

Thanks for your response. I will look into nrfx driver.