How to mass erase the external flash using STM32_Programmer_CLI

[DFlam]

Hi all,

I realized my custom external loader for STM32CubeProgrammer and it works fine when used from the Programmer GUI.

I can program, erase ad read external flash.

Now I'd like to use the command line interface but I cannot find how to mass erase the external flash from CLI.

If I load a .HEX file for the external flash the affected sectors are erased and programmed perfectly, but issuing the -e all command anly erases the internal flash.

Since my .hex file contains only used external flash areas, I'd like to do a mass erase before writing so I'm sure that flash is clean before writing.

External mass erase is possible from GUI so I suppose it is also possibel from command line...

Any suggestion?

Thanks,

Davide

[Aziz BRIGUI · Accepted solution]

Hello @Community member​,

Thank you for posting,

You can achieve this by using the following command :

STM32_Programmer_CLI.exe -c port=swd -e all -el "Absolute path of your external loader"

Keep in mind that this command is only available when using SWD/JTAG.

I hope this helps.

Best regards,

Aziz

[RonnyBergner]

How does erase all behave when i am passing my external loader binary?

Will it only erase the external flash, or also cause an erase of the internal flash?

Do i have to call an erase for external and internal flash separately?