I need help configuring SPI in nrf5340. The dtsi file contains an Arduino spi4_default, but I am unsure how to use it. Can you provide any examples or guidance on where to find a working application?

[Anthony Shivakumar]

I have noticed that the dts file includes the configuration for arduinio_spi, along with the corresponding pins associated with spi4. However, I am unsure about how to utilize this configuration. Could you provide guidance on how to initialize it in my application?

Pins associated with SPI4.

[Øivind]

Hi,

I'll see if I can find a sample application which uses spi4 on nRF5340 and get back to you.

[Anthony Shivakumar]

Thank you!

[Anthony Shivakumar]

Any update on this? Thank you!

[Øivind]

Hi again, sorry for the delay, we have a lot of public holidays this week in Norway, so we are a little understaffed.

I rewrote an old sample for you, and I think it should help you get started: spi4.zip

Connect P1.13 and P1.14 on the DK and see that the same information is being sent and received.

[Anthony Shivakumar]

I appreciate your assistance! It functioned flawlessly. I have a question for clarification. Regarding the chip select pin, should we configure it specifically for the master?

Additionally, will this code still function properly when operating in slave mode? If it does, what is the procedure for configuring the chip select pin?