nRF21540 implementation on a nRF52840 without OS

[Dominik Eugster]

Hi

I'm looking for an example implementaion code on the nRF52840 without an operating system. Is there some example or application note?

I connected the SPI and all IO Pins. I have no Zephyr code.

Regards

[Dominik Eugster]

I implemented the driver and now I try to communicate over the SPI with the nRF21540.

First, I try to read the Partnumber. When I set the power doen off, the SPI signals are ok, but of course I have no feedback from the MISO.

Signals ok:

As soon as I set PowerDown = ON = nRF21540 enabled, the second SPI MOSI pulse is there, but really low (nRF21540 pulls down the level!)

What is the reason of this and how this can be solved?

Reagrds

[Sigurd Hellesvik]

Hi

Please create a new ticket for this issue, to keep DevZone tidy.

Thanks,
Sigurd Hellesvik