I cannot see the initialized variable value in the flash when using stm32?

[Vmere.1]

Hello guys,

Please find the question which I asked in stack overflow

https://stackoverflow.com/questions/74422745/i-cannot-see-the-initialized-variable-value-in-the-flash-when-using-stm32

[gbm]

I believe you may find the answer by looking at .map or .list file. I'm not fluent in .ld scripts but what you did looks strange to me. I would simply declare a memory area like FLASX, then tell the linker to put a particular constant into it by using attribute / section. Also, to ensure that the object will be emitted even if it is not referenced, you should use .keep in .ld file.

[MM..1]

Initiaized or not is not relevant for optimizer. Not used is removed...

Too const can be used/optimized directly as define and not struct usw.

[Vmere.1]

That is why I used volatile (And I'm currently using -o3). But I have used these variables.

[MM..1 · Accepted solution]

volatile place it after init into RAM , but optimizer maybe too use compression for data, then you see it only after uncompress into RAM...

[Vmere.1]

You are true, when I added volatile it is in ram not in ro section.