Where do I configure nrfx internae?

[Joost Voorhaar]

I am used to nRF5 SDK through SES when using nRF52, but for this new project we use the nRF Connect SDK on an nRF5340 (and thus switched to a CMake/VSC development environment).

This project uses an LCD that requires a C/D line on SPI to differentiate command- and data bytes. I don't think the original Zephyr SPI implementation provides that feature, so we chose to use nrfx for this peripheral. Its SPIM driver however needs NRFX_SPIM_EXTENDED_ENABLED to be set. Now, I have been looking for a place to do that and I feel very, very dumb... but... where do I define that exactly? I can switch device drivers on and off in KConfig, but no configuration can be done there, right?

[Joost Voorhaar]

Wait, what? O man, you saved the day! Dunno how I could have missed that... SPIM4 indeed is the only one that supports DCX (and SPIM0 on the network core apparently, but that lacks CS support). Thanks!

//Reminder to myself: always check the PS, not once, not twice, ... tripple, at least.

[lvh831]

Hi Didrik,

I'm using ncs nrf5340. Where do I set CONFIG_SPI_4_NRF_RX_DELAY ? I don't see this is a valid setting for proj.conf. Though I did set CONFIG_NRFX_SPIM4=y in proj.conf. Thanks.