RE: Sensor API in Zephyr adding new sensor (howto) on the example LSM6DS33

Raoul — Wed, 05 Apr 2023 08:03:32 GMT

No problem, happy Easter!

Raoul

RE: Sensor API in Zephyr adding new sensor (howto) on the example LSM6DS33

pawelkocwa — Wed, 05 Apr 2023 07:56:42 GMT

Hello Raoul,

Thank you for your answer!

Best regards
Paweł

RE: Sensor API in Zephyr adding new sensor (howto) on the example LSM6DS33

Raoul — Tue, 04 Apr 2023 18:26:15 GMT

Hi Pawel,

If you want a summary of how to get started, my colleague has share that here: How to add new i2c based sensor device to ncs\v1.3.0\zephyr\drivers\sensor

However the process is slightly different depending on whether you would like to add the driver to the Zephyr tree (modifying the repository) or as an out-of-tree driver. This guide to adding out of tree drivers seems excellent: https://blog.golioth.io/adding-an-out-of-tree-sensor-driver-to-zephyr/

As a starting point, note that Zephyr has built in drivers for the LSM6DSO, which seems to be a variant of the same chip, except 2 generations newer. There's also an associated sample for it: https://docs.zephyrproject.org/latest/samples/sensor/lsm6dso/README.html

I also found a user-made driver for the LSM6DS3 on GitHub, which you might be able to reuse: https://github.com/iwasz/example-zephyr-module

It seems that the LSM6DS3 and LSM6DS33 share an identical MEMS core, I assume they will be very similar to interface with.

Finally, I would like to share the following two links with details on Zephyr driver development:

https://www.zephyrproject.org/how-to-build-drivers-for-zephyr-rtos/

https://www.youtube.com/watch?v=o-f2qCd2AXo

Best regards,
Raoul