AVR-Chat

Now that I think of it, you'd run through variable initialization as well 
right after that, so the memory locations should be reset to their initial 
values needed. At least, that's what I do in ASM. I would assume a C compiler 
would do the same thing, but I've never paid attention. 

-Micah 

On Monday 02 January 2006 3:36 pm, Zack Widup wrote:
>  Your initialization of the chip should include resetting the stack
>  pointer.  So if at the end of your interrupt routine you go to the very
>  start of the program instead of using "retfie", you're starting completeny
>  new and it shouldn't matter.
>
>  Zack
>
>  On Mon, 2 Jan 2006, Moataz Hussein wrote:
>  > 
>  >   
>  >   Thanks all for your advice, I was meaning start of program i.e. full
>  > reset. 
>  >   In a book I have it is mentioned
>  >   "When an interrupt occurs the value of the program counter is stored
>  > in the stack so that the program returns to where it was when the
>  > handling interrupt is over." 
>  >   So is it correct that going to the start (rjmp start) at the end of
>  > the interrupt routine instead of the RETI instruction will not help? 
>  >   Moataz
>
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