unknow data when use qspi panel

[Wayne_Chang]

Hi all,

I applied QSPI driver on NCS 2.4.0  with QSPI LCD panel and I encountered the problem.

The red area is the data I sent, but the blue area is not what I sent.

I already try many way to send with qspi, like nrfx_qspi_write() or directly write to register NRF_QSPI

but all result are the same.

Is this caused by the hardware design, or can I modify it on the software side?

I already read the post below, but it seems no solution update.

 RE: NRF52840 QSPI Driver LCD（LCD Driver IC GC9C01） 

Wayne

[Kazi Afroza Sultana]

Hello Wayne,

You may try to use SPI for your LCD panel instead of QSPI?

[Wayne_Chang]

Hi Kazi,

I have previously used SPI to drive an LCD. I only began testing QSPI in order to increase the framerate. If the QSPI on the nRF52840 does not support functionalities beyond flash memory, I am considering switching to a different MCU.

However, I need a clear and definitive answer:
Is it possible to use the QSPI interface on the nRF52840 to drive an LCD?

BR,
Wayne