Error message inquiries and display problems

[LeeJaewon]

Hello, I developed a custom board with a pinmap based on stm32mp157f - dk2.

I think if you match the pinmap and use the start package, lcd and other features will work.

I re-created the sd card according to that advice, and I also rebooted it, but the same thing is happening.

What should I do?

History: https://community.st.com/t5/stm32-mpus-products/error-message-inquiries-and-display-problems/m-p/714459#M11850

https://community.st.com/t5/stm32-mpus-boards-and-hardware/check-error-code-for-uart4/td-p/700161

[PatrickF · Accepted solution]

Hi @LeeJaewon 

"devil is in the details".

I think you should check what you made different versus stm32mp157F-dk2 board. Unless you are really insightful of the system, even very small board change could lead to a blocking point.

Are you using exactly same STPMIC1 and supply usage ? USB Type-C supply with ADC connections ? Ethernet PHY, etc...

Custom board is usually meaning custom device tree and need to build complete image.

STM32MP157F-DK2 image are not build with other boards binary compatibility in mind.

Regards.