how to allocate QSPI memory for structure variables?

[Mani1]

Board : STM32F469I

I created a project via cubemx. how to use QSPI memory for structure variables. I am struggled for this issue.

Thanks

D. Manikandan

[Imen.D · Accepted solution]

Hello @Mani​ ,

What is the type of QSPI memory ?

Please precise what do you expect exactly as result?

As I understood your need to change variable in the external QSPI memory.

So, you can follow and get inspired from QSPI_perfs example within X-CUBE-PERF-H7, it is based on STM32H7 , but you can update it according to your needs.

But for your information: QSPI cannot support memory mapped write.

The Memory-mapped mode is used in below cases:

• For reading operations

• For code execution from external Quad-SPI Flash memory

You can also refer to this AN4760 Application note Quad-SPI interface on STM32 microcontrollers and microprocessors.

Imen

[Mani1]

This is very helpful for me. Thanks