STM32U5G7VJT6Q flash loader failed to download

[heyo]

Hello,

I am developing an external flash loader for an IS25LP512MJ QSPI flash on my custom board. However, I am encountering an issue where programming always fails with the following error:

Error: failed to download Sector[0]

The complete log is attached below.

I have verified the following:

• The QSPI flash is initialized correctly.

• I can successfully read, write, and erase the flash from my application.

• The flash loader builds without any errors.

• The issue only occurs when STM32CubeProgrammer (or STM32CubeIDE via the GDB server) attempts to program the external flash.

The relevant part of the log is:

Memory Programming ...
  File          : ST-LINK_GDB_server_a19388.srec
  Size          : 1.60 MB
  Address       : 0x08000000

Erasing memory corresponding to segment 0:
Erasing internal memory sectors [0 109]
Erasing memory corresponding to segment 1:
Erasing external memory sectors [0 191]

Download in Progress:

Error: failed to download Sector[0]
Error: failed to download the File

Has anyone experienced a similar issue or knows what could cause this error?

I would appreciate any suggestions on what to check. In particular, are there any common mistakes in the external loader implementation that could result in this error, even if the flash can be accessed normally from the application?

Thank you!

 

[mƎALLEm]

Hello,

Custom bootloader related questions need to be posted in STM32 MCU Embedded Software forum board.

I’m moving the post then..

[Saket_Om]

Hello ​@heyo 

Please refer to the article below to implement your flash loader:

How to create an external flash loader for an STM32H7RS | Community

[heyo]

What am I supposed to do with this link? My STM32CubeMX project does not include an SBS configuration. Also, I described a specific issue and asked for help with that particular problem.