SPI4 (High-Speed SPI) Bring Up on nRF5340

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

David B. — Thu, 21 Oct 2021 22:05:53 GMT

Roberto,

I am having the exact problem, would be so kind to share your solution?

Thank you

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

Roberto Cortez — Mon, 19 Oct 2020 17:56:37 GMT

ok, I already found the solution!

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

Wesley Groom — Mon, 19 Oct 2020 17:42:12 GMT

Hi Roberto,

It is probably best that you follow up with a new ticket for the issue as haakonsh suggested.

We did not end up solving this issue but are no longer using this device and are not putting effort into it right now.

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

Wesley Groom — Mon, 19 Oct 2020 17:41:20 GMT

I apologize that I didn't follow up on this sooner. We gave up on trying to use the nRF5340 because this wasn't the only weird issue we ran into at the time and we decided to move away from using the silicon that was not yet ready for production at the time.

I can say that the issue was not likely due to the Errata as I was running the peripheral at a much lower speed to start.

We did not end up solving this issue but are no longer using this device and are not putting effort into it right now.

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

haakonsh — Mon, 19 Oct 2020 10:21:31 GMT

We need you to open a new ticket with a detailed explanation of your issue.

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

Roberto Cortez — Sat, 17 Oct 2020 19:53:56 GMT

Hi Wesley!

Thank you.

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

haakonsh — Fri, 20 Mar 2020 12:43:43 GMT

Could be Errata [45] SPIM: Receive is not functional at 32 Mbps.

RE: SPI4 (High-Speed SPI) Bring Up on nRF5340

Wesley Groom — Fri, 21 Feb 2020 01:26:27 GMT

Following up here as I've found a temporary workaround, but this is far from ideal...

Not sure yet why this is happening, but SPIM4 works correctly after executing a soft-reset using:

nrfjprog -r

Note that a pin reset or power cycle of the board alone is not sufficient, only a soft-reset seems to work to enable SPIM4 on the next boot. Other peripherals function correctly without the soft-reset, just not SPIM4.

Edit: Correction it looks like it was starting the program using west debug (GDB) specifically and continuing from there that allows SPIM4 to function correctly.