Hi,
I have written the code for led blinking, using timer0 of ATmega2560 on AtmelStudio7. When I run it on simulator, the status of led(s) changes without timer reaching the set value. Can someone assist me with this..? Thanks in advance..
Here is the code:

#include <avr/io.h>

void delaynew ();
int main(void)
{
   DDRB = 0xFF; //PortB is set as o/p

  while (1)
  {
     PORTB = 0xAA;
     delaynew();
     PORTB = 0x55;
     delaynew();
  }
}

void delaynew (void)
{
   TCCR0A =0xC2;   //Clear timer on compare match mode is set
   //TCNT0 = 0x00;   //Initialized the counter
   OCR0A = 0x70;   //Set the delay to 50 a/c to decimal
   TCCR0B = 0x01;   //set the clock with no prescale
   while ((TIFR0 & 0b00000011) == 0b00000011)
   {
     TCCR0B = 0x00;
     TIFR0 = 0x03;
   }
}

 

https://exploreembedded.com/wiki/AVR_Timer_programming