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can i share a variable between custom bootloader and user application?

Question asked by moustaid jamal on Mar 8, 2017
Latest reply on Mar 9, 2017 by moustaid jamal

I have a custom bootloader that I flash to the first sector (0x8000000)  and when it receives a new program it loads it to 0x8003000. I can jumps to the user application,and also jumps from user application to the bootloader.

I want to know if there are any methods to tell the custom boot loader, there are not a simple start-up, but it's a jump from user application.

can i share a variable between bootloader and user application? 

Thank you in advance !