From 858375bf717458c003125971e77fb095f83a9105 Mon Sep 17 00:00:00 2001
From: Sandeep Mistry <sandeep.mistry@gmail.com>
Date: Mon, 14 Sep 2015 20:09:13 -0400
Subject: [PATCH] Add callback support to advertise* and stop API's

---
 lib/beacon.js | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/lib/beacon.js b/lib/beacon.js
index c32d933..32cd3fb 100644
--- a/lib/beacon.js
+++ b/lib/beacon.js
@@ -22,7 +22,7 @@ function Beacon() {
     setInterval(this._tick.bind(this), TICK_INTERVAL);
 }
 
-Beacon.prototype.advertiseUid = function(namespaceId, instanceId, options) {
+Beacon.prototype.advertiseUid = function(namespaceId, instanceId, options, callback) {
     this._parseOptions(options);
 
     this._advertisementData = AdvertisementData.makeUidBuffer(namespaceId, instanceId, this._txPowerLevel);
@@ -30,10 +30,10 @@ Beacon.prototype.advertiseUid = function(namespaceId, instanceId, options) {
 
     this._mainAdvertisementData = this._advertisementData;
 
-    this._advertiseWhenPoweredOn();
+    this._advertiseWhenPoweredOn(callback);
 };
 
-Beacon.prototype.advertiseUrl = function(url, options) {
+Beacon.prototype.advertiseUrl = function(url, options, callback) {
     this._parseOptions(options);
 
     this._advertisementData = AdvertisementData.makeUrlBuffer(url, this._txPowerLevel);
@@ -41,10 +41,10 @@ Beacon.prototype.advertiseUrl = function(url, options) {
 
     this._mainAdvertisementData = this._advertisementData;
 
-    this._advertiseWhenPoweredOn();
+    this._advertiseWhenPoweredOn(callback);
 };
 
-Beacon.prototype.advertiseTlm = function() {
+Beacon.prototype.advertiseTlm = function(callback) {
     this._advertisementData = AdvertisementData.makeTlmBuffer(this._batteryVoltage, this._temperature, this._advCnt, this._secCnt);
 
     if (this._tlmPeriod === 0) {
@@ -53,7 +53,7 @@ Beacon.prototype.advertiseTlm = function() {
     }
 
     this._removeFlagsIfOsX();
-    this._advertiseWhenPoweredOn();
+    this._advertiseWhenPoweredOn(callback);
 };
 
 Beacon.prototype.setBatteryVoltage = function(batteryVoltage) {
@@ -64,9 +64,9 @@ Beacon.prototype.setTemperature = function(temperature) {
     this._temperature = temperature;
 };
 
-Beacon.prototype.stop = function() {
+Beacon.prototype.stop = function(callback) {
     this._advertising = false;
-    bleno.stopAdvertising();
+    bleno.stopAdvertising(callback);
 };
 
 Beacon.prototype._parseOptions = function(options) {
@@ -107,12 +107,16 @@ Beacon.prototype._parseTlmOptions = function(options) {
     this._tlmCount = tlmCount;
 };
 
-Beacon.prototype._advertiseWhenPoweredOn = function() {
+Beacon.prototype._advertiseWhenPoweredOn = function(callback) {
     if (bleno.state === 'poweredOn') {
         this._advertise();
     } else {
         bleno.once('stateChange', this._advertiseWhenPoweredOn.bind(this));
     }
+
+    if (typeof(callback) === 'function') {
+        bleno.once('advertisingStart', callback);
+    }
 };
 
 Beacon.prototype._advertise = function() {