AVR-Chat

> Compiling with WinAVR 
> ATMega8
> External clock (8Mhz crystal)
> My Fuses are set correctly
> 
> -------------------------------
> 
> I've modified the makefile to have:
> 
> F_CPU = 8000000
> 
> 
> 
> -------------------------------
> C Source:
> 
> 
> #include <avr\io.h>
> #include <avr\delay.h>
> 
> int main(void) 
> {	
> 	
> 	//set port c as all output
> 	DDRC = 0xff;
> 	
> 	PORTC = 0x20;
> 		
> 	_delay_ms(37);	
> 	
> 	PORTC |= 0x10;
> 	
> 	
> }
> 
It works in AVR Studio with different delay times giving the correct 
timing.  I also simulated it in Proteus, which agreed.  What have you 
set the optimisation level to in the project options?  Level -O0 
causes timing errors (and produces a warning when you compile).




Richard---------------------
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