Preserving a variable during reset

[dwburlington]

is there a way to tell the compiler not to initialize a variable to 0 during a reset.??

Thanks

[Ttelmah]

Anything that is not static/global, and is not assigned a value, is not by default initialised. So a simple variable declared inside the main as:

int8 fred;

Will retain the value it last had (but will also contain garbage on the first boot).
Remember though that variables in _subroutines_, can have the memory storage area re-used, so it has to be declared in main.
You can also use #locate, to put a variable into an area of memory, that _you_initialise on the first 'real' boot, but leave unchanged on resets.

Best Wishes

[dwburlington]

perfect that will work.

Thanks

[asmallri]

Naturally the situation changes if you are using a bootloader as the bootloader has no visibility in the the memory space used by the application.
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