code.js

espruino-servo-trails

var width = 0.7; // to 2.3
var freq = 20; // to 100;

var i = null;

var go = function(){
  i = setInterval(function() {
    digitalPulse(B10, 1, width);
  }, freq);
};

var stop = function(){
  clearInterval(i);
};

var setFreq = function(fIn){
  freq = fIn;
  stop();
  go();
};

var setWidth = function(wIn){
  width = wIn;
  stop();
  go();
};