From 14e8a93ac66b4356920c82a8facf1fdc53736718 Mon Sep 17 00:00:00 2001
From: Evelyn Eastmond <evhan55@gmail.com>
Date: Fri, 14 Jun 2019 11:59:17 -0400
Subject: [PATCH] Add global var 1-byte-to-follow to enum.

---
 src/extensions/scratch3_ev3/index.js | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/extensions/scratch3_ev3/index.js b/src/extensions/scratch3_ev3/index.js
index b7e8f891f..ed3335c6f 100644
--- a/src/extensions/scratch3_ev3/index.js
+++ b/src/extensions/scratch3_ev3/index.js
@@ -71,9 +71,10 @@ const Ev3Opcode = {
  * @enum {number}
  */
 const Ev3ByteValue = {
-    NUM8: 0x81, // = 0b10000001 = "1 byte to follow"
-    NUM16: 0x82, // = 0b10000010 = "2 bytes to follow"
-    NUM32: 0x83 // = 0b10000011 = "4 bytes to follow"
+    NUM8: 0x81, // = 0b10000001 = 1 byte to follow
+    NUM16: 0x82, // = 0b10000010 = 2 bytes to follow
+    NUM32: 0x83, // = 0b10000011 = 4 bytes to follow
+    GLOBAL8: 0xE1 // = 0b11100001 = size of global var - 1 byte to follow
 };
 
 /**
@@ -731,7 +732,7 @@ class EV3 {
             cmds[1] = Ev3ByteValue.NUM8; // 1 byte to follow
             cmds[2] = 33; // 0x21 ARRAY // TODO: document
             cmds[3] = 96; // 0x60 CHANGED // TODO: document
-            cmds[4] = 225; // 0xE1 size of global var - 1 byte to follow // TODO: document
+            cmds[4] = Ev3ByteValue.GLOBAL8;
             cmds[5] = 32; // 0x20 global var index "0" 0b00100000 // TODO: document
 
             // Command and payload lengths
@@ -752,7 +753,7 @@ class EV3 {
                     cmds[index + 2] = i; // PORT
                     cmds[index + 3] = Ev3Value.DO_NOT_CHANGE_TYPE;
                     cmds[index + 4] = Ev3Mode[this._sensorPorts[i]];
-                    cmds[index + 5] = 225; // 0xE1 one byte to follow // TODO: document
+                    cmds[index + 5] = Ev3ByteValue.GLOBAL8;
                     cmds[index + 6] = sensorCount * 4; // global index // TODO: document
                     index += 7;
                 }