#define F_CPU   8000000

#include <avr/io.h>
#include <avr/interrupt.h>

void initClock()
{
    // Setting CLKPSR does not affect the problem (It doesn't work regardless of what this is set to)
    // I have tried this before and after setting CLKMSR

    CCP = 0xD8;
    CLKPSR = 0;

    CCP = 0xD8;
    CLKMSR |= (1 << CLKMS1);



}

void initPorts()
{

    DDRB |= (1 << PORTB0); // PB0 = OCR0A
}

void initTimer()
{
    // I posted this code just in case, this works as expected (but only on the internal oscillator)

    // We want Compare Output Mode, Clear OC0A on Compare Match
    TCCR0A =    (1 << COM0A0);




    // Overflow setting
    TIMSK0 |= (1 << OCIE0A);

    // We will not use a prescaler
    // This also starts the timer
    TCCR0B =    (1 << CS00) | (1 << WGM02);

    // This is the value at which the timer will restart
    OCR0A = 8299;

    // Set external interrupts
    sei();


}



int main(void)
{
    initClock();
    initPorts();
    initTimer();

    while(1)
    {

    }
}