Using NRFX drivers with Zephyr

[nick_haman]

Is there any documentation/tutorials for using NRFX drivers directly in Zephyr without trying to create conforming device drivers?  I have a lot of code written for the NRF52840 using SDK16 that I need to port to the NRF5340.  The biggest hurdle is trying to conglomerate all the documentation and examples needed to develop Zephyr drivers, which has a steep learning curve.

I found an example that uses nrfx_spim directly that fills in most of the blanks.  I need examples for I2C, GPIO, I2S, USB, BT.

Also,

1. Where do I find references for the prj.conf CONFIG statements that I need to enable each NRFX peripheral?

2.  How does IRQ_CONNECT work for the handlers?

[Øivind]

Hi,

I am not aware of sample code for accessing those peripherals with the nrfx api, but I can see if I can find anything.

The CONFIG_NRFX_* configs can be found on the Kconfig Reference website: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.9.1/kconfig/search.html?q=CONFIG_NRFX_&check_keywords=yes&area=default

Could you elaborate on what you mean by "How does IRQ_CONNECT work for the handlers"?
IRQ_CONNECT() takes irq number, priority, isr address, handler and flags as parameters, and initializes an interrupt handler.
The IRQ is then normally enabled when you call the init function.