I2C connection between two nordic development boards

[Vinay Bhagure]

I want to connect two nRF54L15 development boards using I2C protocol. Is there any sample in nordic SDK v2.0.8 or v2.0.9 that I will help me to set up nRF54L15 DK as a master and other one as a slave.  I have found a method but it involves using nRFx TWIS driver. " TWI/I2C implementation with nRFx TWIS Driver  ". Thankyou!

[Einar Thorsrud]

Hi,

I am not aware of any such samples. If you are not relying on other higher level drivers for this, I do not see a fundamental problem with using nrfx directly. And for that you have some samples under modules/hal/nordic/nrfx/samples/doc/sphinx/examples_desc/twim_twis. There are no board files for nRF54L15 for these samples, though. Other than that there is documentation for the I2C slave API documentation.

[Vinay Bhagure]

Hi, Thanyou for your answer. What if I have two nRF52840 devices? or one nRF52 DK and another is nRF52840 DK. 

[Einar Thorsrud]

I am not aware of any Zephy samples, so I would still point to the nrfx samples unless you have a need for Zephyr APIs (that would also be possible, but I am not aware of any slave samples.

[Vinay Bhagure]

ok, can you suggest anything about SPI data transfer between two nRF52 DK or nRF52840 devices. Is there any sample for that on the SDK 2.0.8? 

[Einar Thorsrud]

Hi,

SDK 2.0.8 does not exist, I assume you mean 2.8.0? You can refer to the nrfx samples here (exist also in 2.8.0). If you want to use the Zephyr APIs, you can see this unofficial exmaple.