RE: Changing UART TX and RX pins during Zephyr runtime with nrfx

zaman_turja_solshare — Wed, 23 Nov 2022 07:04:24 GMT

Hi morerook , i was working on same thing, i got the disable thing but how did you changed the pin and reenabled it ?

RE: Changing UART TX and RX pins during Zephyr runtime with nrfx

Sigurd — Tue, 10 Aug 2021 11:40:11 GMT

Hi,

[quote userid="25226" url="~/f/nordic-q-a/78379/changing-uart-tx-and-rx-pins-during-zephyr-runtime-with-nrfx"]Would this be sufficient to switch the pins or is other configuration required?[/quote]

You would e.g. need to disable the UART, configure the pins, and then enable the UART again for it to work.

See e.g. this post: https://devzone.nordicsemi.com/f/nordic-q-a/77308/change-pinmux-at-runtime

[quote userid="25226" url="~/f/nordic-q-a/78379/changing-uart-tx-and-rx-pins-during-zephyr-runtime-with-nrfx"]Zephyr has no native capability to change the pins[/quote]

Correct. You would need to use the nrfx API directly for this. This sample here might be useful: https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/boards/nrf/nrfx_prs