RE: NCS 2.0.2 to 2.3.0 update error with i2c_nrfx_twim

mscherer — Wed, 10 May 2023 16:14:55 GMT

Hi Kenneth,

Thanks for the quick response. I just checked our -pinctrl.dtsi and the default node for I2C did NOT have the property "bias-pull-up" listed. Once I added it, the I2C line functioned perfectly with nrfx_twim on NCS 2.3.0.

We have not updated our device tree or pinctrl files, so I'm not sure how NCS 2.0.2 had I2C working without the bias-pull-up. Regardless, thanks for the nudge in the right direction!

RE: NCS 2.0.2 to 2.3.0 update error with i2c_nrfx_twim

Kenneth — Wed, 10 May 2023 11:38:19 GMT

Hi,

This explain a bit where it comes from:
E: Error on I2C line occurred for message 0

As to why? Maybe a logic analyzer trace could help, for instance is there pull-ups on the pins in questions?

Kenneth