STM32F429ZE only has two options available (RGB666 and RGB565) in the LTDC configuration, there should be the RGB888 option according to the datasheet.

[JMana.637]

Hi,

I'm not sure whether this is a bug in the Cube or whether I'm missing out something. I tried opening the F439 in the Cube and it has the 24-bit RGB option. Just to check while I was there I searched for the LTDC_B0 pin and found it on PE4, so I went back to my F429 window and sure enough, when I click on the PE4 pin, it can be configured as LTDC_B0, yet that would only be possible in the 24-bit RGB888 mode. So I'm confused.

I'm on 5.3.0. I went through the bug fixes included in the recent 5.4. release but didn't find my problem.

I guess it wouldn't be a problem to generate the code for the F439 and copy it over but I'm still not sure whether my micro supports it and I have no way of testing it rn. My display only supports the 18-bit RGB but I want to replace it with slightly different one which in turn only supports the 24-bit...

Thank you for your suggestions.

[Tilen MAJERLE · Accepted solution]

Hello @JMana.637​ ,

LQFP144 package does not support RGB888 format. You would need to go to higher package instead.

Best regards,

Tilen

[JMana.637]

I see, I didn't notice it in the datasheet then.

Thank you!