#define F_CPU 16000000UL
#include <avr/io.h>
#include <util/delay.h>
int main(void)
{
DDRB |= (1 << DDB1);
char String[64] = "hello, world!";
while(1)
{
for(int i = 0; String[i] != '\0'; i++)
{
for (int j = 7; j >= 0; j–)
{
if (String[i] & (1 << j))
{
for (int x = 0; x < 962; x++)
{
PORTB ^= (1 << PORTB1);
_delay_us(208); //makes it ~2400Hz, Optimal for Max buzzer sound
}
}
else
{
_delay_ms(200);
}
}
}
}
}