I2C slave nrf5340

RE: I2C slave nrf5340

wardrose — Wed, 01 Apr 2026 08:40:16 GMT

I think the question is understandable but a bit confusing, especially the “main CPU board” part. It’s probably better to follow newer nRF Connect SDK resources instead of outdated posts to avoid misunderstandings.

RE: I2C slave nrf5340

Elfving — Fri, 07 Nov 2025 15:06:09 GMT

Yeah that post is for the nRF5 SDK as well, so I would recommend you to rather use some steps made for the new nRF Connect SDK. This would be a better point to start off.

RE: I2C slave nrf5340

DvAgas — Fri, 07 Nov 2025 13:10:25 GMT

Hi Elfving.
Thank you for response
I have a cpu board running debian I wrote an I2c service communications with the NRF5340.
I want the I2c service to query the NRF5340 for information.

This is the link that I keep coming across regarding this old look for a newer
This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

https://devzone.nordicsemi.com/f/nordic-q-a/76127/i2c-slave-implementation

RE: I2C slave nrf5340

Elfving — Fri, 07 Nov 2025 10:13:37 GMT

Hi,

[quote user=""]The current answers all show the answer as old to look for a newer answer.
[/quote][quote user=""]Were implementing the NRF5340 as a slave to your main CPU board[/quote]

Could you expand a bit on this? I am not sure if I understand. What is this main CPU board? And what answer show that you need to look elsewhere?

Regards,

Elfving