Re: [avr-gcc-list] volatile with winavr2010

[Joerg Wunsch]

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Leiu <address@hidden> wrote:

> Thanks all, But i can't find bug, Here is my full code

> Result : i can show 'A'! why?

Because you're using hyperterm?

I've compiled this for an ATmega16, set it up on an STK500, and
connected it to my terminal emulator:

ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOP...

I assume this is what you'd like to see, isn't it?

Note that after printing the 'Z', it pauses for one "tick", which
matches your code (the ISR only resets "first_edge" to 'A' then, but
doesn't print out anything).

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)