Software Buttons - Many buttons from just one hardware button

Example below assumes default button BTN1.

var mySWBtn = new SWBtn(function(k){
    console.log("BTN1 detected " + k);
    if/*sel*/ (k === "S") { LED1.set(); // one short press on
    } else if (k === "L") { LED1.reset(); // one long press off
    }
  });

If you have a button on a pin - for example, A8 - use this:

var mySWBtn = new SWBtn(function(k){
    console.log("Button on A8 detected " + k);
    if/*sel*/ (k === "S") { LED1.set(); // one short press on
    } else if (k === "L") { LED1.reset(); // one long press off
    }
  },A8);

More sophisticated, you can go with this:

var fs = // functions 
{ "S": function() { LED1.set(); }
, "L": function() { LED1.reset(); }
};
var mySWBtn = new SWBtn(function(k){ if (fs[k]) fs[k](); }, A8);

Note: Code only partially tested. ;-)