Error when reading from NUS TX service

[gfwilliams]

The NUS TX service isn't meant to be read (it's notification only), but if you do read it from an external device that ignores the flags then it causes Espruino to print an exception: http://forum.espruino.com/conversations/319392/#comment14189991

[gfwilliams]

Just tried this with:

var gatt;
NRF.connect("de:70:d9:0c:eb:86 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(c) {
  return c.readValue();
}).then(function(d) {
  console.log("Got:", JSON.stringify(d.buffer));
  gatt.disconnect();
});

from another Puck.js device, and no error reported - so presumably the Go implementation is doing something strange :(