Codevision or proteus problem

[maniamoozadeh]

proteus problem

hello.
I have a problem with counter/timer0 of the atmega16 AVR.
I wrote a simple code in codevisionAVR and then simulate it in proteus.
but the timer doesn't count up to 0xFF. I don't know why ?
my code seems to be right.
in proteus I put a atmega16 in designer windows. then set the CKSEL Fuses to
"internal RC 8 MHz" oscillator. then go into debug mode and open the watch
window and put TCNT0 register in it.
the TCNT0 counts up to a value (not 0xFF) and then goes to 0 !

#include <mega16.h>

void main()
{
  TCCR0 = 0x05;
  TCNT0 = 0x00;

  while(1)
  {

  }
}

 

[cobol]

problem with watch dog timer in proteus

i think your problem is at if......

i should use you this code if(TCNT0 >= 0xFF)

i sure this code will help u

 

[maniamoozadeh]

watchdog codevisionavr mega16

no.
if you remove the whole "if block" nothing will change.
I think the AVR chip automatically resets. but I don't know why.
the watchdog is disabled.