On Thu, 19 Feb 2009 10:22:23 -0800 (PST)
Parthasaradhi Nayani <partha_nay...@yahoo.com> wrote:
> Hi Vincent,
> If I understand correctly, the word "volatile" itself is to tell the compiler
> not to ignore the statement. I am not sure if your statement is correct, but
> I have used
>
> "asm volatile ("nop"::);"
I used this too, because it's what the avr-libc manual shows, however
when I do this, GCC caughs :
lcd.c:96: error: ‘asm’ undeclared (first use in this function)
lcd.c:96: error: (Each undeclared identifier is reported only once
lcd.c:96: error: for each function it appears in.)
lcd.c:96: error: expected ‘;’ before ‘volatile’
make: *** [lcd.o] Error 1
the same avr manual (section 9.6.5, "macros") suggests that using
__asm__ instead of asm (and same for volatile) might help get rid of
warnings. So I tried that and it worked.. so I stick with it ;-)
--
Vince
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