AVR-Chat

Just as a quick update, I got the hardware running and all the code ran 
just fine.  As I suspected, the warnings are bogus.  I'm going to send 
it in as a bug report.

Pat


Pat Villani wrote:
> OK, lurker here.  After a year of on again, off again AVR projects, I'm 
> finally doing an ATMega32 based project.  Tools are AVR Studio v4.12 
> SP3, WinAVR 20060421 and 
> <http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3353>AVR 
> JTAGICE mkII.  The board comes in this week, so I decided to put 
> together a "Hello world" program using GCC and avr-libc (polled USART 
> I/O) to test it.
>
> I figured I'd test the program first in order to be able to start with a 
> known reference, so I ran it on the simulator.  First, it complained of 
> an uninitialized stack pointer at the first function call.  The 
> disassembly shows that the stack is initialized, but I stuck a "SP = 
> RAMEND;" statement in, and it seemed to pass.  Now I get stack overflow 
> and stack underflow errors on function returns.  I'm watching the Stack 
> Pointer in the I/O View and it seems to be what I expected it to be.  It 
> runs to completion as expected, but maybe I'm missing something.
>
> Google and Yahoo Group searches didn't seem to yield any meaningful 
> results.  Any advice?
>
> Pat
>