cli(); //disconnect interrupts // Non-inverse output mode TCCR1A|=(1<<COM1A1); //1 TCCR1A&=~(1<<COM1A0); //0 // shear mode with exact phase and frequency TCCR1A&=~(1<<WGM10); //0 TCCR1A&=~(1<<WGM11); //0 TCCR1B&=~(1<<WGM12); //0 TCCR1B|=(1<<WGM13); //1 // Dividend 8 TCCR1B|=(1<<CS11); //1 TCCR1B&=~((1<<CS10)|(1<<CS12)); //0 0 OCR1A =25; // 50% pulse duration ICR1=50; // 20kHz sei(); // interrupt resolution
