From 3659973101d176e9cb4e6273b084d9dde722d83a Mon Sep 17 00:00:00 2001
From: Evelyn Eastmond <evhan55@gmail.com>
Date: Tue, 21 Aug 2018 11:14:16 -0400
Subject: [PATCH] Fixing #1510: WeDo2 stop button gives console error if device
 not connected.

---
 src/extensions/scratch3_wedo2/index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/extensions/scratch3_wedo2/index.js b/src/extensions/scratch3_wedo2/index.js
index 5b6f0d16f..03d0d0e61 100644
--- a/src/extensions/scratch3_wedo2/index.js
+++ b/src/extensions/scratch3_wedo2/index.js
@@ -657,6 +657,7 @@ class WeDo2 {
      * Stop the tone playing and motors on the WeDo 2.0 hub.
      */
     _stopAll () {
+        if (!this.getPeripheralIsConnected()) return;
         this.stopTone();
         this.stopAllMotors();
         // this.stopLED();