How to config the MPU of stm32h743iit6?

[Junde]

Hi,

I want to extend SDRAM by FMC at stm32h743iit6. When configuring the MPU, there was some error as below, what are the wrong parameters? 

[FBL]

Hello @Junde​,

Thank you for your contribution on ST Community.

What is the purpose of using MPU? I couldn't get your point to extend SDRAM!

[Junde]

I don't need the MPU this time, but cubeMx recommends I use it since I config it.

I want to use the SDRAM for the LTDC frame buffer.

After I disable the MPU, all is working well.

Thanks.

[FBL · Accepted solution]

Hello @Junde​,

That's the point, if you are not executing from SDRAM, you may don't need to configure the MPU since the default configuration of SDRAM FMC is device memory XN. After all, it depends on your implementation.

I hope my answer has helped you. When your question is answered please close this topic by marking as Best the reply that answered you, it will help others find that answer faster.

Thanks for your contribution. 

[Junde]

Of cause your answer is helpful, thanks @F.Belaid​ for your good reply.

Have a good day.