STM32H5 External Loader QSPI flash MX25L12835F

[lallain]

Hello,

I am trying to make an external loader for a STM32H5 to program a QSPI flash MX25L12835F with STM32 Cube Programmer.

In my project I add files Dev_inf.c .h ans Loader_Src.c .h from :

https://github.com/STMicroelectronics/stm32-externaloader/tree/main/STM32H5x_boards/MX25LM51245G_STM32H573I-DK

And modify them to adapt to my board :

- Dev_inf.c  : update StorageInfo struct

- Loader_src.c : reimplement Init() , MassErase() , Write(), SectorErase() with my flash driver.

I test these functions in debug with the original linker STM32H562RGTX_FLASH.ld and these functions works ok.

After I change the linker file with linker.ld of the branch contrib stm32-external-loader\Loader_Files\other devices and build and generate the file .stldr and put it into STM32CubeProgrammer\bin\ExternalLoader

Then when I open STM32CubeProgrammer I see my external loader in the list :

 

But when I try to read or erase at QSPI address 0x90000000 I get an error immediatly and nothing happens on the QSPI bus signals like if the functions are not executed :

Does anyone have an idea of what I forgot to do ? 

Thanks,

[KDJEM.1]

Hello @lallain and welcome to the community;

I recommend you to look at MOOC - External QSPI loader how to - YouTube and get inspired to check your configuration.

Which VTOR address are you using? I think this discussion can help you: Solved: Files for STM32H563 External Loader - STMicroelectronics Community

I hope this help you!

Thank you.

Kaouthar

[lallain]

Hello @KDJEM.1 ,

Thanks for your answer, 

I have look at the MOOC but didn't find the solution

I am using :

Init() : SCB->VTOR = 0x20003000 | 0x200; 

linker.ld : RAM (xrw) : ORIGIN = 0x20003004, LENGTH = 512K-12292

The error in STM32Cube Programmer is the init function that fail directly: 

15:03:20:870 : Read progress:
15:03:20:871 : Reading data...
15:03:20:871 : Init flashloader...
15:03:20:871 : Init function fail
15:03:20:876 : Error: Data read failed

I try to empty the Init function and only return 1 (=LOADER_OK) and have the same behavior.

In put my file Loader_Src and linker.ld in attachement

Do you see something wrong ?

Thanks

[Pavel A.]

Try to avoid "external loaders" and use your own code to put the data on the ext. flash.

There are too much trouble with these loaders, they are too fragile. 

[Tesla DeLorean]

Likely the functions Init() is calling that fail or return errors.

If you have a UART you can use that to instrument the code to understand what's happening.

The alternative is to make a test-harness to interact and test the functions from within an application which you can run on a debugger.

What's your pin utilization for the external memory?

[lallain]

Thank you @Pavel A. and @Tesla DeLorean for your answers,

@Pavel A. I wanted to use the ST external loader to have a quick solution to program the external memory and using it when degugging under STM32 Cube IDE

@Tesla DeLorean It seems that the code is not executed when using STM32 Cube Programmer, I try to simply toggle a GPIO in Init() function and it is not working I've immediatly the Init function fail error.

(I verified before that it works in debug with the standard linker file STM32H562RGTX_FLASH.ld and without changing VTOR as well as all other functions I used)

 My pin utilisation for the external memory is : (STM32H562RGT LQFP64)

 22 PA6 OCTOSPI_IO3, 23 PA7 OCTOSPI_IO2, 26 PB0 OCTOSPI_IO1, 27 PB1 OCTOSPI_IO0, 28 PB2 OCTOSPI_CLK, 29 PB10 OCTOSPI_NCS

 Do you have an idea of what could be the problem ?

Thanks,