Does NRF5340 have an example code for QSPI driving uLED display peripherals ?

[guomingyi]

Hi Nrodic，

Does NRF5340 have an example code for QSPI driving uLED display peripherals (for example, I need to drive this display chip: JBD013VGA， As per the attached datashell)? I found similar code (v2.3.0/zephyr/drivers/flash/nrf_qspi_nor. c), but there are no examples related to driver display peripherals. I have just come into contact with this platform, although it helps with documentation（ developer.nordicsemi.com/.../driver.html ）I have clearly introduced the API usage specifications, but I still hope to have a similar reference code so that I can import it better.

We look forward to your reply.

Thank you very much.JBD013VGA 4010 Datasheet_V2.21c_for_jg(1).pdf

[Turbo J]

Won't work: Read the QSPI chapter in the PS. This QSPI unit is tailored around certain NOR flash memory chips and won't support much else.

If you can, use one of the SPIM units.

[guomingyi]

Hi Turbo，

Unfortunately, I received this unsupported result,

I found an example of someone using NRF52's QSPI to drive an LCD（ jimmywongiot.com/.../ ）However, the above function API cannot be found on sdk2.3.0. So, is it certain that the QSPI driver display peripheral cannot be used on NRF5340?

Thanks.

[Turbo J]

Its not certain that you can't use the QSPI peripherial, but it did surprise me that such a thing is possible - even though a graphic LCD is kind of accessed similar-ish to memory chips.

That is also why I recommended to read the PS - you will need to compare the PS to the LCD datasheet in order to check if the two can talk to each other properly. Look at the instruction set.

Note that I am not a nordic semi emplolyee, and reading random datasheets will usually trigger my hourly rate.

[Jørgen Holmefjord]

Hi,

As mentioned by Turbo J , the QSPI peripheral in nRF5340 is tailored for interface with external NOR flash devices. The Instruction set is described in the documentation and you need to read the datasheet of the uLED display to see if this supports the same instruction set. It is also possible to setup and Sending custom instructions according to the datasheet of your device, which is what Jimmy have done in the blog post you linked.

The blog post uses the nrf_drv_qspi API from nRF5 SDK, but it should be very similar to the nrfx_qspi API supported in nRF Connect SDK.

I'm not aware of any examples supporting uLED displays like you ask for, you will have to implement the driver yourself according to the commands described in the datasheet of the device.

Best regards,
Jørgen

[guomingyi]

Ok，thank u very much。