[STM32H7B0RBT6][LTDC] Not possible to use RGB888 on CubeMx

[Ayoub Cheggari]

Hello,

I am working on an HMI product with STM32H7B0RBTx LQFP64 and want to use the RGB888. As per Datasheet, it seems possible:

But when I start a project on CubeIDE, it only provides only RGB565/666. 

My question is:

- Is this a limitation in the CubeMX and I can use RGB888 if I do it manually?

- If it's not the case, please to let me know and correct it on the datasheet.

Thanks,

Ayoub

[SofLit]

Hello,

I think it's not a limitation but linked to the package you are using LQFP64. So some LTDC signals are not available on that package.

You need to refer to the product datasheet.

With UFBGA176 (bigger package) I can see RGB888:

Hope that answered your question.

[Ayoub Cheggari]

Thanks for the quick reply @SofLit ! 

I saw that are supported on different packages, but data sheet still says it's possible! Below, it shows that LDC_R1 is mapped to pin 16, while in CubeMx, it's allowed to use it! 

[SofLit]

Ok I will escalate the issue and get back to you as soon as it's confirmed.

[Ayoub Cheggari]

Many Thanks!

[SofLit · Accepted solution]

By checking again the datasheet, LCD_R0 and LCD_B0 lines are not available on LQFP64. So that's why RGB888 is not available on that package.

[SofLit]

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@Ayoub Cheggari wrote:

Thanks for the quick reply @SofLit ! 

I saw that are supported on different packages, but data sheet still says it's possible! Below, it shows that LDC_R1 is mapped to pin 16, while in CubeMx, it's allowed to use it! 

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And this is another issue that I need to rise it internally. Ticket number not accessible by community users 203407.

[Ayoub Cheggari]

Thanks @SofLit! It's clear now!