Initialization OSPI in Quad mode SPI for working with NOR FLASH

[AB.19]

Hi everyone!

I'm trying to use STM32H723 in QUAD SPI mode.

CubeMX does project generation but when I trying to compile project at Keil an error appears about undeclared "GPIO_AF4_OCTOSPIM".

If I changed it to GPIO_AF4_OCTOSPIM_P1 compilation run without errors.

But how I could know that I chose correct define or not?

Other question about commands to work with memory, which HAL command and it what sequence for READ/WRITE/STATUS CHECK in this mode?

I cannot find examples from STM to test and revise my code.

[TDK]

GPIO_AF4_* defines evaluate to 4. Use whichever one is defined in your library. Looks like it's GPIO_AF4_OCTOSPIM_P1 in the current library.

https://github.com/STMicroelectronics/STM32CubeH7/blob/master/Drivers/STM32H7xx_HAL_Driver/Inc/stm32h7xx_hal_gpio_ex.h#L147

There are several OSPI examples in the CubeMX repository. Here is one:

https://github.com/STMicroelectronics/STM32CubeH7/tree/ccb11556044540590ca6e45056e6b65cdca2deb2/Projects/STM32H7B3I-EVAL/Examples/OSPI/OSPI_RAM_MemoryMapped

[AB.19]

I've seen this example. But in my case, it is not informative, since it describes the mode of operation of 8 lines, and I need 4. And I must be sure of the commands that I use.

[Tesla DeLorean]

Sounds like a bug in the code generator, about par for the course.

To use QSPI parts on OSPI, you need to specify 4-bit (or 1, 2 as appropriate) for the instruction, address and data widths, and 8-bit for the command size.

Is this a work project?

[AB.19]

This is a working project in which we are making the migrate from STM32F4 to the more powerful H7 MCU line. Do you have any real experience on this issue?

I am still awaiting a response from the STM team with working examples. When we worked with the STM32F4 MCU, STM provided many examples of how to work with the QSPI.

[Tesla DeLorean]

>>Do you have any real experience on this issue?

Got Micron/Winbond QSPI devices running on an H7A3ZI, which is a OCTOSPI platform similar to the H723

In the process of coding an .FLM for Keil

I can free climb..

[AB.19]

Could you share with community initialization code and read/write code for your platform?

I think it's will be very helpful.

[ssooki]

please share..

[Amel NASRI]

Hi @AB.19​ ,

Regarding the issue with generated STM32CubeMX code: I let our STM32CubeMX expert @Khouloud ZEMMELI​  check & confirm it. It will be helpful to precise used version of the tool or share an ioc file.

For the second request about the examples: I suggest you to have a look to the article How to configure OctoSPI and QuadSPI with an STM32? Useful links are there.

-Amel

[Khouloud ZEMMELI]

Hello @AB.19​ ,

Thanks for your post,

As mentioned by @Amel NASRI​ , it will be helpful if you provide your ioc file.

Otherwise, I'll check the problem then I'll get back to you.

Thanks, Khouloud