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#define F_CPU 8000000UL
#include
#include
#include

int main(void)
{

   DDRD=0xFF;
   TCCR1A=0;
   TCCR1A=0x82;
   TCCR1B=0x19;

   OCR1A=250;// around 50% duty cycle
   ICR1=499;// for 16KHz output frequency
 }