(function(back) {
  function gb(j) {
    Bluetooth.println(JSON.stringify(j));
  }

  var mainmenu = {
    "" : { "title" : "Gadgetbridge" },
    "Connected" : { value : NRF.getSecurityStatus().connected?"Yes":"No" },
    "Find Phone" : function() { E.showMenu(findPhone); },
    "< Back" : back,
  };

  var findPhone = {
    "" : { "title" : "-- Find Phone --" },
    "On" : _=>gb({t:"findPhone",n:true}),
    "Off" : _=>gb({t:"findPhone",n:false}),
    "< Back" : function() { E.showMenu(mainmenu); },
  };

  E.showMenu(mainmenu);
})