Facing an issue while creating external loader for Nucleo-G491

VPana.1 · ‎2025-07-19

I am using NUCLEO-G491RE board and i want to create external flash loader for W25Q64JVSSIQ QSPI flash memory. I used external loader files from Github and build the .stldr file and placed in CubeProgrammer. when i try to read from 0x90000000 location, i am getting read failure error. I used the below path to create external loader for W25Q64JVSSIQ QSPI flash memory,

https://github.com/STMicroelectronics/stm32-external-loader/tree/contrib/Loader_Files/other%20devices

Driver code is working fine since I am able to see the data in memory mapped mode with test code provided in the github link.

But, when create a external loader using github files and placed .stldr file into cubeprogrammer and working on read/write/erase and these operations are failing.

Could you please check my project and do needful. PFA for my loader project

Thanks

VPana.1 · ‎2025-07-28

Hi @Tesla DeLorean ,

G474 and G491 are same in implementation as per my knowledge

VPana.1 · ‎2025-08-03

Hi @KDJEM.1

Did you check the code that is attached to above. If not yet could you please check and let me know where is actual issue.