Configure Puck.js as an iBeacon

I had two issues during testing:

1. I think the parameters in the set methods were in a wrong order: typedarr.set(array [,offset])
   
2. NRF.setAdvertising has not accepted the Uint8Array as object: Error message "Uncaught TypeError: Expecting object or undefined, got Uint8Array"
   
   

But, with some small adjustments below, I got your code running. The device is then successfully recognized as an iBeacon.

var advertise = function(options) {
  var d = new Uint8Array([
    0x02, // Number of bytes after first AD structure
    0x01, // BLE_GAP_AD_TYPE_FLAGS
    0x04, // BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED
    0x1A, // Length
    0xFF, // BLE_GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA
    0x4C, 0x00, // 0x004C == Apple
    0x02, 0x15, // iBeacon type + length
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,// iBeacon proximity uuid
    0, 0, // major
    0, 0, // minor
    0xc5]); // 2'c complement RSSI at 1 meter distance in dBm
  
  d.set(options.uuid,9);
  if (options.major!==undefined) d.set([options.major>>8,options.major],25);
  if (options.minor!==undefined) d.set([options.minor>>8,options.minor],27);
  if (options.rssi!==undefined) d.set([(options.rssi<0)?(options.rssi+256):options.rssi],29);
  
  var e = [].slice.call(d);
  NRF.setAdvertising(e, {interval:100});
};

advertise({
  uuid : [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], // ibeacon uuid
  major : 0x0001, // optional
  minor : 0x0001, // optional
  rssi : -59 // optional RSSI at 1 meter distance in dBm
});

Perhaps you have a better idea how to pass the Uint8Array to the NRF.setAdvertising function.