Changing from 16bit to 32bit SDRAM Problem

[DSand.5]

I am working on a project what started with a ST32F7508-DK, and I generated the code and project in TouchGFX. Everything was working fine. Then we decided to go from 16bit SDRAM to 32bit SDRAM. So we created a board that was a copy on the discovery kit, the only difference was that we added the pins needed for migrating to the 32 bit, which resulted in needing to move some of the pinouts for the ltdc (screen). Now after that change, I am having issues flashing and running identical programs on the board (identical meaning the main code and touchgfx code did not change). When trying to flash in STM32Programmer, I am getting the message:  

18:55:58 : Error: Data mismatch found at address 0x90000002 (byte = 0x00 instead of 0x05)

18:55:58 : Error: Download verification failed

Also, when looking at the memory visualizer, it seems like nothing is flashing to anythgin past 0x90000000. I was wondering if I messed up something in the SDRAM configuration, am i missing something in the bootloader/linker file, etc. This issue is also repeatable with the same hex file on a different machine and a different board.

I am also somewhat new to this, so any help would be great. Thanks.

[Tesla DeLorean]

Did you change the QSPI pins or​ NOR Flash memory?

[DSand.5]

Yes. The memory changed, and the additional pins were added. I changed this in the ioc. Is that what you meant?

[Tesla DeLorean]

I mean did you change the design vs that of the STM32F7508-DK wrt the QSPI, because if you did the External Loader isn't going to work. It is tied to a board design, has a name reflecting that, and doesn't magically change with CubeMX settings.​

[MM..1]

If pinout for new QSPI is compatible with original DK replace QSPI chip

[DSand.5]

Ok, so it turns out that although the QSIP chip has changed, we never implemented it. We were planning on using it once the project got larger, but for now we are only using the SDRAM and the normal MCU flash memory. Also, it seems that after some clarification, the SDRAM also has not changed. The only difference is that before we wired it up for 16 bits (just like the discovery kit), and now we wired it up for the full 32bit.

So I guess the question would be, if I took a discovery kit, and kept everything the same except for wiring it up for 32bit as opposed to 16 bit, what would I have to change?

[MM..1]

Your idea about use only internal MCU with 64 Kbyte of Flash memory, 216 MHz CPU

is FAIL. Here you cant place GUI projects.

Designing with this MCU type need run code from external QSPI etc.

Changing QSPI type and circuit step you to hard way

1. customize config ioc
2. customize loader special code for STM Programmer / IDE
3. customize all example code to use other QSPI
4. customize all example or your app code for use 32bit SDRAM