Updating chrome plugin to v8 to improve connections

Author: jguille2

src/platforms/web/chromium/crx/bundle.js

@@ -44,7 +44,7 @@ Dispatcher.prototype.getBoard = function (boardId) {
 
 Dispatcher.prototype.closeSerial = function (boardId) {
     Boards[boardId].reset();
-    Boards[boardId].sp.close();
+    if (Boards[boardId].connectionId >= 0) {Boards[boardId].sp.close();}
     Boards[boardId] = null;
 };
 
@@ -564,27 +564,27 @@ function SerialPort(path, options, openImmediately, callback) {
   this.options = convertOptions(options);
 
   this.options.serial.onReceiveError.addListener(function(info){
-
-    switch (info.error) {
-
-      case 'disconnected':
-      case 'device_lost':
-      case 'system_error':
-        err = new Error('Disconnected');
-        // send notification of disconnect
-        if (self.options.disconnectedCallback) {
-          self.options.disconnectedCallback(err);
-        } else {
-          self.emit('disconnect', err);
-        }
-        if(self.connectionId >= 0){
-          self.close();
-        }
-        break;
-      case 'timeout':
-        break;
+    if (self.connectionId == info.connectionId) {
+      switch (info.error) {
+
+        case 'disconnected':
+        case 'device_lost':
+        case 'system_error':
+          err = new Error('Disconnected');
+          // send notification of disconnect
+          if (self.options.disconnectedCallback) {
+            self.options.disconnectedCallback(err);
+          } else {
+            self.emit('disconnect', err);
+          }
+          if(self.connectionId >= 0){
+            self.close();
+          }
+          break;
+        case 'timeout':
+          break;
+      }
     }
-
   });
 
   this.path = path;
@@ -8029,6 +8029,7 @@ function Board(port, options, callback) {
   }.bind(this));
 
   this.transport.on("disconnect", function() {
+    this.version.major = null;
     this.emit("disconnect");
   }.bind(this));
 

src/platforms/web/chromium/crx/manifest.json

@@ -1,7 +1,7 @@
 {
     "name": "Snap4Arduino connector",
     "description": "Connect Berkeley Snap! to Arduino boards",
-    "version": "7.0",
+    "version": "8.0",
     "manifest_version": 2,
     "app": {
         "background": {
@@ -26,7 +26,8 @@
             "https://educaciodigital.cat/*",
             "https://cesire.cat/*",
             "https://www.robolot.online/*",
-            "https://campus.innovadidactic.com/*"
+            "https://campus.innovadidactic.com/*",
+            "https://snap2make.click/*"
         ],
         "accepts_tls_channel_id": false
     },

src/platforms/web/chromium/root/index.html

@@ -66,8 +66,8 @@
                 }
                 world = new WorldMorph(document.getElementById('world'));
 
-                // keepAlive should be handled at the plugin side
-                world.Arduino.keepAlive = false;
+                // keeping Alive... we need to ask to the plugin side continuosly
+                world.Arduino.keepAlive = true;
 
                 ide = new IDE_Morph();
                 ide.openIn(world);

src/platforms/web/chromium/root/plugin/arduino.js

@@ -37,6 +37,18 @@ window.onunload = function (evt) {
     ide.sprites.asArray().forEach(function (each) { each.arduino.disconnect(true); });
 };
 
+Arduino.prototype.keepAlive = function () {
+    this.board.getVersion();
+    if (Arduino.keepAlive) {
+        if (this.board.version.major == null) {
+            // Connection dropped! Let's disconnect!
+            this.gotUnplugged = true;
+            this.board.sp.close();
+            this.closeHandler();
+        }
+    }
+};
+
 Arduino.prototype.connect = function (port) {
     var myself = this;
 
@@ -59,7 +71,7 @@ Arduino.prototype.connect = function (port) {
                             // We need to populate the board with functions that make use of the browser plugin
                             myself.populateBoard(myself.board);
 
-                            myself.keepAliveIntervalID = setInterval(function() { myself.keepAlive() }, 5000);
+                            myself.keepAliveIntervalID = setInterval(function() { myself.keepAlive() }, 3000);
 
                             // These should be handled at plugin side
                             // myself.board.sp.on('disconnect', myself.disconnectHandler);
@@ -127,6 +139,7 @@ Arduino.prototype.populateBoard = function (board) {
     };
     board.i2cReadOnce = function (address, reg, callback) { postal.sendCommand('i2cReadOnce', [board.id, address, reg], function (response) { board['i2cResponse-' + Number(address)] = response; }); };
     board.i2cWriteReg = function (address, reg, byte) {postal.sendCommand('i2cWriteReg', [board.id, address, reg, byte]); };
+    board.getVersion = function () { postal.sendCommand('getBoard', [board.id], function(response) {board.version.major = response.version.major}); };
 };
 
 // Fake Buffer definition, needed by some Firmata extensions