iPhone notifications for Bangle.js

Ok, perfect. You can reproduce it just by occupying Espruino for a while and connecting to another Espruino that outputs data over BLE UART:

var gatt;
NRF.connect("fc:cc:b8:22:b0:42 random").then(function(g) {
  gatt = g;
  return gatt.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e");
}).then(function(service) {
  return service.getCharacteristic("6e400003-b5a3-f393-e0a9-e50e24dcca9e");
}).then(function(characteristic) {
  characteristic.on('characteristicvaluechanged', function(event) {
    console.log("RX: "+JSON.stringify(E.toString(event.target.value.buffer)));
  });
  return characteristic.startNotifications();
}).then(function() {
  console.log("Done!");
});
setInterval(function() {
  for (var i=0;i<1000;i++);
},50);