NRF52840 QSPI Driver LCD（LCD Driver IC GC9C01）

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

Wayne_Chang — Mon, 31 Mar 2025 03:27:02 GMT

hi all,

Is there any solution update here?

I also encountered the same problem. The red area is the data I sent, but the blue area is not what I sent. Is this caused by the hardware design, or can I modify it on the software side?

I already read the post that provided by haakonsh but it didn't say any thing about this.

Wayne

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

Kenneth — Thu, 02 Nov 2023 11:51:24 GMT

There is nothing but what you can see in the link,

Kenneth

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

LPJ — Thu, 05 Oct 2023 13:55:47 GMT

Hi Haakonsh

Does your colleague have a repo for the blogpost? I'm looking into driving a LCD using QSPI on nRF5340, and a repo would be really helpfull.

Thank!

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

Jgong — Tue, 28 Mar 2023 03:34:16 GMT

Sorry ! So late reply to you , The problem has already been solved. Thanks.

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

haakonsh — Sun, 19 Mar 2023 12:48:58 GMT

Can you share the datasheet of your LCD?

The QSPI interface can be used as a regular flash device interface or as a single line SPI device using custom instructions.
Can you share a logic scope of the QSPI lines?

You might find this relevant blog post by a colleague useful.