WIRING) timerAttach(TIMER3OUTCOMPAREA_INT, TimerService); // for Wiring platform only #endif } #endif #if _useTimer4) if(timer== _timer4) { TCCR4A = 0; // normal counting mode TCCR4B = _BV(CS41); // setprescaler 8 TCN = 0; // clear the timercount TIFR4 =...