LTDC & FMC cannot be used together for stm32h743iit6

[seyedamirhossein moshtaghioun]

Hi 

I have designed a custom board using stm32h743iit6 and used an SDRAM and LTDC as well,

the problem is that right now Ltdc is working fine with the LCD and FMC is also working fine but when I combine them together the MCU becomes unresponsive, for example in the same program generated by cubemx if I comment on the FMC initialization LTDC is working and also if I comment the LTDC them the SDRAM is working but as soon as I initialize them together the MCU becomes unresponsive,

Any help is greatly appreciated

thanks

[Amel NASRI]

Hi @seyedamirhossein moshtaghioun​ ,

I am coming back to this case because it is some how weird.

Firstly, is there any update from your side? Did you resolved the problem?

It seems as if you lost the clock signal for one peripheral.

• If the problem is still there, can you test the case when calling MX_FMC_Init() before MX_LTDC_Init()
• Did you tried to keep only these 2 peripherals (LTDC and FMC) in your configuration in order to test the behavior?

I am curious to know more about your case. Please keep us informed.

-Amel