From 760f77728d5d32100e69cd06637e33d68e81b6f6 Mon Sep 17 00:00:00 2001
From: "Marcus M. Scheunemann" <find@mms.ai>
Date: Thu, 1 Jun 2017 11:41:53 +0100
Subject: [PATCH 1/4] hacky first attempt: wait till all devices are found
 during scan, then stop scanning and start connecting to peripherals

---
 lib/adaptors/ble.js | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/lib/adaptors/ble.js b/lib/adaptors/ble.js
index b67d97e..09043a1 100644
--- a/lib/adaptors/ble.js
+++ b/lib/adaptors/ble.js
@@ -5,6 +5,8 @@ var util = require("util"),
 
 var ble;
 
+var spheros = 0;
+
 function initBLE() {
   var isChrome = typeof chrome !== "undefined";
 
@@ -85,8 +87,17 @@ Adaptor.prototype.open = function open(callback) {
     // connect to peripheral using noble
     ble.on("discover", function(peripheral) {
       if (peripheral.id === self.uuid) {
-        ble.stopScanning();
-        self._connectPeripheral(peripheral, callback);
+        spheros--;
+        
+        var _flagFindAllSpheros = setInterval(function() {
+          if (spheros === 0) {
+            clearInterval(_flagFindAllSpheros);
+
+            ble.stopScanning();
+            self._connectPeripheral(peripheral, callback);
+
+          }
+        }, 100);
       }
     });
 

From 97c7b9275efb87ed44d26243c3f9ac5b1cca74fd Mon Sep 17 00:00:00 2001
From: "Marcus M. Scheunemann" <find@mms.ai>
Date: Thu, 1 Jun 2017 16:23:40 +0100
Subject: [PATCH 2/4] ...

---
 lib/adaptors/ble.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/adaptors/ble.js b/lib/adaptors/ble.js
index 09043a1..5010adc 100644
--- a/lib/adaptors/ble.js
+++ b/lib/adaptors/ble.js
@@ -17,6 +17,7 @@ function initBLE() {
       console.error("Browser-based BLE interface is not yet supported.");
     } else {
       ble = require("noble");
+      spheros++;
     }
   } catch (error) {
     ble = null;

From e954c2e978dcf4f13bbef38a46e7d8259e0044b0 Mon Sep 17 00:00:00 2001
From: "Marcus M. Scheunemann" <find@mms.ai>
Date: Thu, 1 Jun 2017 17:03:08 +0100
Subject: [PATCH 3/4] stop scanning only before connecting and restart later

---
 lib/adaptors/ble.js | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/lib/adaptors/ble.js b/lib/adaptors/ble.js
index 5010adc..db2ccab 100644
--- a/lib/adaptors/ble.js
+++ b/lib/adaptors/ble.js
@@ -5,7 +5,7 @@ var util = require("util"),
 
 var ble;
 
-var spheros = 0;
+var peripherals = 0;
 
 function initBLE() {
   var isChrome = typeof chrome !== "undefined";
@@ -17,7 +17,7 @@ function initBLE() {
       console.error("Browser-based BLE interface is not yet supported.");
     } else {
       ble = require("noble");
-      spheros++;
+      peripherals++;
     }
   } catch (error) {
     ble = null;
@@ -88,17 +88,17 @@ Adaptor.prototype.open = function open(callback) {
     // connect to peripheral using noble
     ble.on("discover", function(peripheral) {
       if (peripheral.id === self.uuid) {
-        spheros--;
-        
-        var _flagFindAllSpheros = setInterval(function() {
-          if (spheros === 0) {
-            clearInterval(_flagFindAllSpheros);
 
-            ble.stopScanning();
-            self._connectPeripheral(peripheral, callback);
+          ble.stopScanning();
+          self._connectPeripheral(peripheral, function(){
+            
+            peripherals--;
 
-          }
-        }, 100);
+            if (peripherals > 0) {
+              ble.startScanning();
+            }
+            callback();
+          });
       }
     });
 

From 44771431635e74a018aaf90c3abc2faec4266a82 Mon Sep 17 00:00:00 2001
From: "Marcus M. Scheunemann" <find@mms.ai>
Date: Fri, 16 Jun 2017 17:20:17 +0100
Subject: [PATCH 4/4] leave the hacky counter, only start scanning after
 connection

---
 lib/adaptors/ble.js | 18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/lib/adaptors/ble.js b/lib/adaptors/ble.js
index db2ccab..a1aae53 100644
--- a/lib/adaptors/ble.js
+++ b/lib/adaptors/ble.js
@@ -5,8 +5,6 @@ var util = require("util"),
 
 var ble;
 
-var peripherals = 0;
-
 function initBLE() {
   var isChrome = typeof chrome !== "undefined";
 
@@ -17,7 +15,6 @@ function initBLE() {
       console.error("Browser-based BLE interface is not yet supported.");
     } else {
       ble = require("noble");
-      peripherals++;
     }
   } catch (error) {
     ble = null;
@@ -89,16 +86,11 @@ Adaptor.prototype.open = function open(callback) {
     ble.on("discover", function(peripheral) {
       if (peripheral.id === self.uuid) {
 
-          ble.stopScanning();
-          self._connectPeripheral(peripheral, function(){
-            
-            peripherals--;
-
-            if (peripherals > 0) {
-              ble.startScanning();
-            }
-            callback();
-          });
+        ble.stopScanning();
+        self._connectPeripheral(peripheral, function() {
+          ble.startScanning();
+          callback();
+        });
       }
     });