I2C not detecting peripherals

RE: I2C not detecting peripherals

mathiaso — Tue, 19 Aug 2025 13:25:50 GMT

Is this a direct continuation of your previous issue, or is this something new that has come up?

RE: I2C not detecting peripherals

Vivek — Sat, 16 Aug 2025 06:46:26 GMT

devzone.nordicsemi.com/.../I2C3.zip

This is two folders with settings fo prj.conf and overlay files. The folder I2C3_working has the BLE and I2C3 both working whereas the I2C3_not has the BLE workign but hte I2C3 does not. Please suggests in the first case. We have the other peripherals (full custom baord) configurations on the I2C3_not . The other folder was to test if the custom boards works or not.

RE: I2C not detecting peripherals

mathiaso — Fri, 01 Aug 2025 11:21:39 GMT

Yes, you're probably onto something there, Vivek.

Please have a look at the solution in this ticket and see if that solves your problem as well.

RE: I2C not detecting peripherals

Vivek — Wed, 30 Jul 2025 12:05:07 GMT

We will be checking that soon as we have ordered one. However can this be an issue - "P1.00 and P1.01 are by default forwarded to the network core for its uart"
if yes, how do we free these pins for I2C as the hardware is already made now?
We are using nrf connect v2.8.0 in VS code

RE: I2C not detecting peripherals

mathiaso — Wed, 30 Jul 2025 11:38:26 GMT

Hi, Vivek.

What do you see when connecting a logic analyser to the lines in question?

Best regards,
Mathias