STM32H743 QSPI FLASH

[Charlie CHEN]

Hi all,

​

Recently, I build a project with TouchGFX for STM32H743,and the total files are more than 2MB,so I have to use external flash memory(W25Q256).

​

Then, I am trying to use QSPI interface to connect external memory and execute in interrupt method.

​

But I have no ideal how to build the function,can any one help me or provide source code?

​

By the way, I have already added the algorithm about W25Q256,and the other initialize was done , backlight was turned on.

Thanks!

[Tesla DeLorean]

If the QSPI device has been mapped into the STM32 address space it should be readable like any other memory.

[Charlie CHEN]

@Community member​ 

Thanks for your reply!

I have already read data from first address,and it was correct but I don`t know how to build the interrupt function .

Is there any suggestion or reference?

Thanks!

[Andreas Bolsch]

E. g. demonstration firmware for STM32F746G-Disco usese QSPI flash. Take a look at the sources, loader files etc. The QSPI interface in F7 and H7 is (almost) identical from software point of view.

[Charlie CHEN]

​

Hi @Andreas Bolsch​ ,

Thanks for your reply!

Do you mean this one in CubeMX?

And I have browsed source code in project,then it was built with TouchGFX but just like the same code what I build .

I didn`t find any function different,Am I find the wrong file?

​

Thanks!

[Andreas Bolsch]

STM32Cube_FW_F7_V1.15.0/Projects/STM32746G-Discovery/Demonstrations/STemWin

contains the QSPI code and linker scripts.

[Charlie CHEN]

I find out.

But why it does not add the algorithm at flash memory?

Is it no need to add in?

[Andreas Bolsch]

What do you mean by "But why ..."