STM32F469 & ST7701S (with SDRAM & QSPI) like STM32F469 Discovery

[Dev_ST_stlp]

Hello,

A topic I am struggling with.

On the STM32F469 Discovery board, I would like to connect a display (800x268) with a MIPI DSI connection, and the controller is an ST7701S.

I would like to know how to do this (and if anyone has faced the same issue). I’ve tried several configurations but still nothing happens, the screen stays black (with the backlight on).

Is there anyone who has a project to share (based on the STM32F469 Discovery) to get this display working?

The SDRAM (FMC) and external flash memory (QSPI) are external.

Thank you for your help.

[mƎALLEm]

Hello @Dev_ST_stlp and welcome to the ST community,

Look at this thread you may contact the OP to share a solution with you.

[Dev_ST_stlp]

Thanks but It doesn't help really, I would like to know if someone had the same issue with the same ref of µC STM32F469 and how to configure it, I mean how to configure MIPI properly and how to initialize it for correct behavior with ST7701S. Once again thanks 

[mƎALLEm]

The same display with the exact MCU part number.. not so easy to find someone that had the same scenario as you, that's why I provided the nearest thread related to your question.

Good luck with that.

[Tesla DeLorean]

Most situation don't align like this, people generally don't pull the screens off the DISCO boards and add Brand-X

You need to find something close and pivot. Read the documentation and understand the mechanics, then you'll be able to free-climb the solution rather than everyone else running rope for you and carrying you up.

Mostly DSI and LTDC is about balancing the clocks and timings around specific displays attached to the controllers. The DSI is a thinner/faster pipe, you need to move the "bits" from the data out the DSI faster than the LTDC delivers them. The LTDC is basically a line/raster based DMA unit that cycles over the frame buffer, continuously.