Facing challenges in sysbuild flashing using west flash on nucleo_u575zi_q

[PragatiGarg-eaton]

Hi,

I am working on building and flashing MCUBOOT+ application using sysbuild on nucleo_u575zi_q.

• nucleo_u575zi_q board is configured to be flashed using west STM32CubeProgrammer runner.
• I am facing challenges in west flashing. After building the signed application along with MCUBOOT using sysbuild command, it is performing mass erase every time it flashes either mcuboot or signed image.
• And ideally, when invoking west flash on a build consisting of multiple images, each image is flashed in sequence without any chip erase.

west flash mcuboot:

west flash of signed image:

Commands used to build and flash:
build command: west build -b nucleo_u575zi_q -p --sysbuild -- -DCONFIG_<mcuboot>=<y> --DCONFIG_<local signing>=<y>
flash: west flash
Question: How can we disable the mass erase option with every west flash here?

OS: Windows
zephyr version: 3.2.0
STM32CubeProgrammer: 2.11.0

Links:
https://docs.zephyrproject.org/latest/build/sysbuild/index.html
https://docs.zephyrproject.org/3.0.0/boards/arm/nucleo_u575zi_q/doc/nucleou575zi_q.html#programming

[erwango]

Erase happens because of this line in board's board.cmak file: board_runner_args(stm32cubeprogrammer "--erase" "--port=swd" "--reset-mode=hw")
Removing the --erase should solve your issue

[PragatiGarg-eaton]

Superb! it's working now. Thanks.