ST7789 display connected to a nRF5340DK board

[lcj]

I am trying to test a nRF5340 with a 1.3 inch waveshare 240x240 display using a st7789 driver. How would I connect the display to the board:

VCC	3.3v
GND	Ground
DIN	Serial Data
CLK	Serial Clock
CS	Chip Select
DC	Data Command/Control
RST	Reset
BL	Backlight

and create an overlay file representing the display connections?

[WesC]

The ST7789 has many node specific properties outside the SPI interface

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/build/dts/api/bindings/display/sitronix,st7789v.html#std-dtcompatible-sitronix-st7789v

you can look at the Pinetime devkit0 with the DTS for a reference.  there is a node specific to the ST7789 and it is part of the chosen node as zephyr,display.  you can mimic that in an overlay.  you can find the dts here C:\ncs\v2.4.2\zephyr\boards\arm\pinetime_devkit0

[khelmutlord]

To tag on, there is a “shield” overlay file for this display: https://docs.zephyrproject.org/latest/boards/shields/st7789v_generic/doc/index.html

more info on shields:

docs.zephyrproject.org/.../shields.html

[lcj]

Shields are confusing me a little.

I see &arduino_spi  in the st7789v_st7789v_waveshare_240x240 file does that mean I need to create a reference for the nrf5340dk_nrf5430_cpuapp? Is that what is meant by "boards must also provide a configuration matching their supported connectors." Does that mean I need to create a specific one for the nrf5340?

I am use to changing things in a local overlay but not really changing the command line (since I'm using the nrf connect for visual studio adding), so I think I would use the kconfig option for actviation.

Is all of this an alternative to creating an overlay file?