Making a device driver for nrf52833 using Device Tree for SPI supported device that is not available in zephyr/drivers/sensors

[noob_123]

Hi,

I am trying to build my own driver for AS5048 (magnetic rotary position sensor) that is connected to nrf52833 using SPI communication. I couldn't fond specific guide or steps to start building a driver using zephyr. There is a section on zephyr project in DeviceTree HOWTOS section named as (Write device drivers using devicetree APIs) but it is very general that is not helpful at all in building a driver. On devZone I  found some questions where people always recommend to start modifying an existing deriver from a zephyr sensor directory but this is also not an easy or straight forward task unless a step by step guide or example available.  Some of the links like (https://interrupt.memfault.com/blog/building-drivers-on-zephyr#full-example) are available but it is using West.

If anybody has some example kindly share, it will be a lot helpful. 

[Øyvind]

Hello, 

Have a look at Circuit Dojo's Zephyr 101 Youtube videos on 

Zephyr 101 - Introduction to Drivers

Zephyr 101 - Rolling Your Own Drivers

Another place to look to support on the Zephyr driver implementation is in the Zephyr Community on Discord.

Hope this helps.

Kind regards,
Øyvind

[noob_123]

These are just introductory lectures using west build. Is there any literally any resource available anywhere on internet by zephyr or nordic that can help anybody to learn how to build a driver for a spi device?

[Øyvind]

Then I'm afraid the Zephyr Community on Discord is your best shot at this moment.

[Bret Foreman]

I wonder, since this thread of about a year ago, if anyone has created any written documentation on Zephyr drivers? As others have noted, the youtube videos are pretty basic and don't cover many cases.

[Øyvind]

Have a look at the nRF Connect SDK Fundementals in our Developer Academy. This covers some of the topics along with more in the pipe line.