Re: [avr-gcc-list] altering array variable and interrupts

[Philipp Burch]

Hi,

I guess, your ISR takes too long. Delayloops in ISRs are very, very bad 
style, because they block the whole CPU. I suppose, the Interrupt comes 
more often than every 3ms, so there is no way for the AVR to execute any 
code outside the ISR. You should rewrite the complete program, there are 
many unnecessary things, such as character generation at runtime. Just 
declare a PROGMEM array with all your digits and read from it with 
pgm_read_byte() (From avr/pgmspace.h, check the manual of avr-libc), 
that saves RAM and initialization work. And it prevents the characters 
from getting modified (Or do you really need this "feature"?).

Philipp
> sorry I forgot to put url: http://rafb.net/p/fxrljj42.html
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