AVR-Chat

At 11:29 AM 8/08/2013, you wrote:
>The failure occurs when "-O" is used AND the EEPROM is not present ...

As a matter of interest how did you manage to get just the -O option
to be generated? Are you using a manual makefile?

There is no way of selecting just -O in Studio's Project 
Configuration Options,
I have it in front of me now.

The current levels of optimization are:
    * -O0 No optimization. This is the same as not specifying any 
optimization.
    * -01 Optimize. Reduces code size and execution time without 
performing any optimizations that take a great deal of compilation time.
    * -O2 Optimize even more. avr-gcc performs almost all 
optimizations that don't involve a space-time tradeoff.
    * -O3 Optimize yet more. This level performs all optimizations at 
-O2 along with -finline-functions and -frename-registers.
    * -Os Optimize for size. Enables all -O2 optimizations that don't 
increase code size. It also performs further optimizations designed 
to reduce code size.
For more information on optimization, see the 'man' pages for avr-gcc.



Regards

John Samperi

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