is dcd data a must?

[5angxr]

dcd data is mainly to config the sdram in my opinion, but it is really hard for developers to read and modify.

can I just leave dcd away, and config sdram in the real C code?

[5angxr]

what I want to do is :

it is my bootloader project, I put stack/heap/ZW/ZI data in ocram, after configed flash and sdram in the C code, I copy App from flash to sdram and ITCM, then it goes to App.

When I get to the app, I put the data in SDRAM.

So, in this case, can I leave the DCD empty?

[Masmiseim · Accepted solution]

Hello @5angxr ,

yes, you can leave the DCD empty or omit it and initialize the memory interface in the C code.
However, this makes it more difficult to store the stack/heap/bss/... in the external memory, as these areas are created in the startup code before main.

Regards

[5angxr]

what I want to do is :
it is my bootloader project, I put stack/heap/ZW/ZI data in ocram, after configed flash and sdram in the C code, I copy App from flash to sdram and ITCM, then it goes to App.
When I get to the app, I put the data in SDRAM.



So, in this case, can I leave the DCD empty?

[Masmiseim]

Hello @5angxr 

That sounds like a valid way to me.

Regards