// backlight PWM generation // use timer 2 in fast PWM mode for this PORTB.7 != PORTB.7; // clear port before enable DDRB.7 |= DDRB.7; // will be used for OC2, must be output TCCR2 = (1 << WGM21) | (1 << WGM20) | (1 << COM21) | (1 << CS20); TCNT2=0x00; OCR2=120;