nrf5340dk connection to a bosch's bhi260ab

[j-saur]

Using the sample code from this earlier devzone post , I've been trying establish communication with from my bosch sensor to my board. I have the code running:  and it's printing that the "spim example" but I'm not getting any confirmation print outs that the device is connecting, or that my test sends hit any error or is receiving any data.

Attached is my project: spi_only.zip

[j-saur]

So I added the api files from bhy as an external driver and tried to get the spi connection working from there.  I'm normally 3D developer so I apologize for the basic questions

extDriver.zip

[Simon]

That will not work. You have not defined the dts node bhi260ab_bmm150 in https://github.com/nrfconnect/sdk-zephyr/tree/master/dts/bindings/sensor. There are several more things that are lacking as well, but take a look at the down below instructions.

Take a look at this link, that demonstrates how to add a new driver to Zephyr: https://devzone.nordicsemi.com/f/nordic-q-a/66230/how-to-add-new-i2c-based-sensor-device-to-ncs-v1-3-0-zephyr-drivers-sensor

Btw. why don't you use the already present driver driver/sensor/bmm150 and the sample zephyr/samples/sensor/bmm150? You just have to add an overlay file in zephyr/samples/sensor/bmm150/boards.

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Zephyr might be complicated and difficult in the beginning, but I would recommend you to put off some time to read through the documentation and trying to understand how stuff works. Take a look at these:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/kconfig/index.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/dts/index.html

Best regards,

Simon

[j-saur]

Thanks Simon! I'll look at those and try to implement them. I didn't use bmm150 because I need an spi connection and I cannot reach the bmm150 data without getting the bhi260ab data first.