Switching from STM32H743ZIT (2MB) to STM32H743ZGT (1MB)

[PFlor.2]

We need to start building with the 1MB STM32H743ZGT while all the development has been done for the 2MB STM32H743ZIT.  As far as I can tell I cannot change the micro in the .iot file for file generation even though the pin assignments and peripherals seem to exactly the same.

Do I have to create a new .ioc file (and new project), re-setup all the pin assignments and peripheral settings, and import in all the existing source files or is there a simpler way to do this and still use the .ioc file for code generation?

[raptorhal2]

I presume the program and data sizes don't exceed ZIT capacities. Try loading the ZGT code.

[Tesla DeLorean]

Could always clone and edit the file...

Shouldn't really be significant differences. If you program the FLASH watch how you're banking it, ie end-to-end vs side-to-side.

The Linker Script can be modified to truncate the FLASH the Linker believes is usable. Ideally you've already split the available space between a loader and application, sort of thing necessary to do field updates. Add code to be aware of option bytes, tested/available FLASH size written in system memory, etc.