nRF5340: QSPI + display?

RE: nRF5340: QSPI + display?

Knut — Wed, 26 Feb 2025 21:21:46 GMT

Hi TomH,

It's been some years since this project was active, so I am sorry I do not have any update. Some experimentation was done by my colleague, but I do not have any info about the results here.

Best Regards,

RE: nRF5340: QSPI + display?

ThomH — Tue, 25 Feb 2025 17:57:06 GMT

Hi Knut,

I came across your post regarding the use of a QSPI display with the nRF5340, and I was curious about your final outcome. Did you eventually manage to get the QSPI display working, or did you switch to another solution?

I'm currently working on a similar project and would appreciate any insights you could share.

Thanks in advance!

RE: nRF5340: QSPI + display?

Dmitry — Tue, 01 Dec 2020 22:18:50 GMT

Hi,

[quote userid="87214" url="~/f/nordic-q-a/67901/nrf5340-qspi-display/282360#282360"]I am looking at using an LCD+touch display with an ST7796SI driver IC. I suppose this means that I would have to write a driver myself...[/quote]

I didn't look deeeply but it seems command set is almost the same as for ILI9341 - most of work already done.

[quote userid="87214" url="~/f/nordic-q-a/67901/nrf5340-qspi-display/282360#282360"]are these drivers also available in nRF Connect SDK, which is needed for the nRF5340 chip I am using on the board I have designed?[/quote]

Even if not - there are only two backend interfaces used by driver, GPIO and SPI master.

RE: nRF5340: QSPI + display?

Knut — Sun, 29 Nov 2020 23:16:12 GMT

Hi again,

I am looking at using an LCD+touch display with an ST7796SI driver IC. I suppose this means that I would have to write a driver myself...

In regards to your comment " There are drivers in nRF SDK for displays based on ST7735 and ILI9341 controllers" - are these drivers also available in nRF Connect SDK, which is needed for the nRF5340 chip I am using on the board I have designed?

There is extensive documentation on the nRF SDK, but I am not able to find the same comprehensive documentation on the nRF Connect SDK.

Many Thanks,

Knut

RE: nRF5340: QSPI + display?

Dmitry — Mon, 02 Nov 2020 19:45:03 GMT

Hi,

What display model do you have? QSPI bus is commonly used to communicate with flash and PSRAM memories, displays are usually connected via SPI or 8-bit parallel bus. To work with SPI display, take a look at SPIM peripheral. There are drivers in nRF SDK for displays based on ST7735 and ILI9341 controllers.

Edit: if you mean FT81x-based display, unfortunately it won't work. QSPI engine in nRF5340 has a hardcoded set of commands that is incompatible with FT81x.