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Software reset and RAM

PMichael over 7 years ago

Hi!

I am using IAR compiler for my project

I declare global variable

__no_init u32 uPowernResetSignature;

in my code I assign value to this variable

uPowernResetSignature=0x11223344;

After that I perform software reset using

NVIC_SystemReset();

After that I check uPowernResetSignature variable.

I expect to see value 0x11223344 because according to datasheet software reset should not change RAM.

I also expect that compiler will not init this variable because __no_init declaration.

But after reset I see in debugger 0.

Can somebody explain why and help how to solve it?

Thank you