Perfect, that did work. Thanks JW. I didn't realize the pad-to value is an absolute reference relative to the elf file, not a relative offset.

I have the same question. I've even set the post-build step command to:arm-none-eabi-objcopy --verbose -S -O binary --gap-fill 0xFF --pad-to 0x20000 "project.elf" "project.bin"Set in the STM32CubeIDE project settings as so:But my binary is not padde...