Does the nrf54LM20A support the i3c bus standard

[Rob Green]

I am beginning to work on a next generation of environmental sensors.  The current group of sensors use the i2c, or oneWire communications bus.  The current standard micro-controller is esp32 based.  For the next generation, I am looking at the Nordic nrf54L family for multiple reasons.  I have samples coming later in July.  One of the desired changes is to move to the i3c communications bus.  I saw on an old question that i3c was going to be implemented in 2023.  I never saw a confirmation on that.  I've identified a great crop of i3c capable sensors and am wondering if the nrf54LM20A supports i3c communications.?

[Simon D-M]

Hi,

The nRF54L series doesn't have any hardware peripheral for I3C. They only have hardware peripherals for I2C Target and Controller.

I didn't find any generic Zephyr driver, so it seems it is currently not possible to use I3C on an nRF54LM20.

It may be possible to make your own generic driver, but I cannot give you any guarantee that the nRF54LM20 can support it.

I saw on an old question that i3c was going to be implemented in 2023.

Where did you see that? If you are able to find this again, could you please send me the link?

Best regards,

Simon