add connection cycle option

adds the option to disconnect / reconnect after sending M112.
May help break out of blocking commands by resetting some control boards

octoprint_estop/__init__.py

@@ -9,7 +9,9 @@ class EstopPlugin(octoprint.plugin.StartupPlugin,
 				octoprint.plugin.SettingsPlugin):
 
 	def get_settings_defaults(self):
-		return dict(estopCommand = "M112")
+		return dict(
+			estopCommand = "M112",
+			estopReconnect = False)
 
 	def on_after_startup(self):
 		self.estopCommand = self._settings.get(["estopCommand"])
@@ -27,6 +29,14 @@ class EstopPlugin(octoprint.plugin.StartupPlugin,
 			dict(type="settings", name="E-Stop Settings", template="estop_settings.jinja2", custom_bindings=False)
 			]
 	
+	def on_settings_save(self, data):
+		s = self._settings
+		if "estopCommand" in data.keys():
+			s.set(["estopCommand"], data["estopCommand"])
+		if "estopReconnect" in data.keys():
+			s.setBoolean(["estopReconnect"], data["estopReconnect"])
+		s.save()
+
 	def get_update_information(self):
 		return dict(
 			estop=dict(

octoprint_estop/static/js/estop.js

@@ -11,8 +11,9 @@ $(function() {
         self.settings = parameters[2];
 
         self.estopCommand = ko.observable("M112");
+        self.estopReconnect = ko.observable(false);
 
-		self.enableEstop = ko.pureComputed(function() {
+        self.enableEstop = ko.pureComputed(function() {
             return self.printerState.isOperational() && self.loginState.isUser();
         });
 
@@ -34,22 +35,39 @@ $(function() {
         });
 
         self.onBeforeBinding = function () {
-            //self.estopCommand(self.settings.settings.plugins.estop.estopCommand());
+            self.updateSettingsValues();
         }
-		self.sendEstopCommand = function () {
+        self.onSettingsHidden = function () {
-			if (self.enableEstop()) {
+            self.updateSettingsValues();
+        }
+
+        self.updateSettingsValues = function () { //lazy way of making sure we have the latest version of the settings
+            self.estopCommand(self.settings.settings.plugins.estop.estopCommand());
+            self.estopReconnect(self.settings.settings.plugins.estop.estopReconnect());
+        }
+
+        self.sendEstopCommand = function () {
+            if (self.enableEstop()) {
                 self.estopCommand(self.settings.settings.plugins.estop.estopCommand());
                 OctoPrint.control.sendGcode(self.estopCommand());
-			};
+
+                if (self.estopReconnect()) {                    //cycle the connection (if enabled) to reset the control board
+                    OctoPrint.connection.disconnect();          //send a disconnect, maybe useful for breaking out of blocking commands.
+
+                    self.onEventDisconnected =function () {     //wait until octoprint has disconnected
+                        OctoPrint.connection.connect();         //reconnect
+                    }
+                }
+            };
         };
     }
 
-	OCTOPRINT_VIEWMODELS.push({
+    OCTOPRINT_VIEWMODELS.push({
         construct: EstopViewModel,
         dependencies: [
-			"loginStateViewModel", 
+            "loginStateViewModel", 
-			"printerStateViewModel",
+            "printerStateViewModel",
-			"settingsViewModel"],
+            "settingsViewModel"],
         elements: ["#sidebar_plugin_estop_wrapper"]
     });
 });

octoprint_estop/templates/estop_settings.jinja2

@@ -9,5 +9,12 @@
                 <span class="help-block">Usually this is M112. Only change if you know what you're doing.</span>
             </div>
         </div>
+        <div class="control-group">
+            <label class="control-label">{{ _('Cycle the connection?') }}</label>
+            <div class="controls">
+                <input type="checkbox" class="input-block" data-bind="checked: settings.plugins.estop.estopReconnect">
+                <span class="help-block">Enabling this will attempt to automatically cycle the connection to the printer. This may cause the printer's control board to be reset (may help break out of blocking commands).</span>
+            </div>
+        </div>
     </form>
 </div>