Creating Custom External Loader for STM32H573RIVx

[A_Bit_More]

Hello ST Community,

I’m developing a custom external loader for a GD25Q64E flash device and cannot get STM32CubeProgrammer to read/write/erase the external flash. I’ve attached a screenshot of the error reported by the programmer.

What I’ve done

• Followed the ST tutorial “External QSPI loader how to” External QSPI loader how to - STMicroelectronics.
• Verified read/write/erase work when exercised from main.c — no errors there.
• When running the loader, I see a hardfault reported in the CubeProgrammer “HardFault” tab. There is a hardfault at the end of loader_src.c in init(); I’m not sure whether that is expected.
• Project uses SPI3 with DMA and interrupts to talk to the external flash.
  • I have also tested this with just polling and verified read/writing/erase work when exercised from main.c

Device and external flash info

• Flash: GD25Q64E
• SPI instance: SPI3 (Polling)

Questions: 
 

1. Any troubleshooting tips for getting the custom loader working with STM32CubeProgrammer (and diagnosing the hardfault shown in the programmer)?

 

[Aziz BRIGUI]

Hi ​@A_Bit_More,

Try adding optimize for size in your IDE and let us know if it resolved the issue.

Aziz

[A_Bit_More]

Where can I find this in the ide?

[Aziz BRIGUI]

It can be found in “Project properties → C/C++ build → Tool setting → Optimization”

 

[A_Bit_More]

Tried it and sadly it’s still not working.