STemwin not work, black screen

[HM?�l]

Hello community,

I have a development board with a STM32F429IGT6 processor. I connected an RGB display (without controller) to the LTDC to the board. On the board is too a 64MBIT Sdram on the FMC port. With STM32CubeMX I have been trying to brighten the display for more than a week. Unfortunately the display stays black. In the meantime, I have everyone Variants tried a layer, two layers, with interrupt, without interrupt, various settings on the layers, Freertos without Freertos ... Examples of Discovery boards from internet have me either helped.

If I put an image from an h-file to pLayerCfg.FBStartAdress the image is visible until the GUI_Init (); What am I doing wrong? Wrong display driver?

Can someone give me help?

μVision V5.16a

STM32CubeMX V1.0 Version 4.26.1

System Workbench for STM32 - C / C ++ Debugging Tools for MCU

Version: 2.3.0.201807130628

[T J]

the display will stay black if the backlighting is not on.

a dead display would be white....

what value is on L1 ? it should be a FerriteBead...

Next time you do a schematic, make sure all the grounds are pointing down... looks much more professional...

not sure about PASS_REG to ground...

You can run code ok ?

did you write to the SDRAM and read back to check it actually works ?