RE: Using SPI3 and UART3

Julien — Fri, 06 Sep 2024 06:15:00 GMT

Thanks for the answer

RE: Using SPI3 and UART3

Kazi Afroza Sultana — Wed, 04 Sep 2024 12:50:07 GMT

Hello,

You can not use the same peripherals simultaneously which share same ID.

https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/memory/appmem.html?cp=4_0_0_4_2_0#instantiation

I have talked to team and got the following feedback.

The current driver model in Zephyr/NCS does not support peripheral resource sharing. Only solution as of today, is to disable these peripherals in dts, and use nrfx API directly.

We have a sample for that here:
https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/boards/nrf/nrfx_prs

Note that when you use nrfx directly, that in addition to handle the switching in the application between the two interfaces, you must also write your own implementation that handle the spi/i2c communication, since you can't use the zephyr api/driver in this case.