External Loader with 4-bit QSPI on XSPI1 for the MX25UW25645G on the NUCLEO-H7S3L8 demo board

[Duckpaddle]

Does anyone know of an existing external loader for the NUCLEO-H7S3L8 that uses the 4-bit QSPI rather than the more conventional 8-bit.  Because of shared pins on the demo board, I needed to use 4-bit QSPI for my build.

[EXUE.2]

do you want to download generated .bin or .hex to XSPI Flash MX25UW25645G  by external tool like STM32CubeProgrammer? in this way, as I know, there are no external flash loader for QSPI mode. 

[Guenael Cadier]

Hi @Duckpaddle 
As per my understanding, this Flash memory only supports Single and Octal IO modes. So 4-Bit QSPI loader might not be achievable on this MX25UW25645G reference.

Regards

[Duckpaddle]

Thanks, that explains a lot.

Is there a Single IO mode external memory loader?