add empty battery frame

app/src/it/raceup/yolo/ui/window/BatteryFrame.java

@@ -0,0 +1,60 @@
+package it.raceup.yolo.ui.window;
+
+import it.raceup.yolo.error.ExceptionType;
+import it.raceup.yolo.error.YoloException;
+import it.raceup.yolo.models.kvaser.message.FromKvaserMessage;
+
+import javax.swing.*;
+import java.util.Observable;
+import java.util.Observer;
+
+import static it.raceup.yolo.utils.Os.setNativeLookAndFeelOrFail;
+
+public class BatteryFrame extends JFrame implements Observer {
+    private static final String TITLE = "YOLO: BMS and battery";
+
+    public BatteryFrame() {
+        super(TITLE);
+
+        setup();
+    }
+
+    public void open() {
+        try {
+            pack();
+            setSize(600, 500);
+            setLocation(625, 0);  // right to motors
+            setResizable(false);
+            setNativeLookAndFeelOrFail();
+
+            // disable exit button
+            setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
+            setVisible(true);
+        } catch (Exception e) {
+            new YoloException(
+                    "cannot open BMS viewer",
+                    e,
+                    ExceptionType.VIEW
+            ).print();
+        }
+    }
+
+    private void setup() {
+        setupLayout();
+    }
+
+    private void setupLayout() {
+        setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
+    }
+
+    @Override
+    public void update(Observable observable, Object o) {
+        try {
+            FromKvaserMessage message = new FromKvaserMessage(o);
+            // todo update
+        } catch (Exception e) {
+            new YoloException("cannot update BMS", e, ExceptionType.KVASER)
+                    .print();
+        }
+    }
+}

app/src/it/raceup/yolo/ui/window/CanMessagesFrame.java

@@ -23,8 +23,8 @@ public class CanMessagesFrame extends JFrame implements Observer {
     public CanMessagesFrame() {
         super(TITLE);
 
-        canMessageSender = new CanMessageSender();  // todo connect to kvaser
-        canMessageBrowser = new CanMessageBrowser();  // todo connect to kvaser
+        canMessageSender = new CanMessageSender();
+        canMessageBrowser = new CanMessageBrowser();
 
         setup();
     }
@@ -70,7 +70,7 @@ public void update(Observable observable, Object o) {
                 canMessageBrowser.update(messages);
             }
         } catch (Exception e) {
-            new YoloException("cannot update car", e, ExceptionType.KVASER)
+            new YoloException("cannot update CAN", e, ExceptionType.KVASER)
                     .print();
         }
     }

app/src/it/raceup/yolo/ui/window/MainFrame.java

@@ -11,17 +11,19 @@
 import static it.raceup.yolo.utils.Os.setNativeLookAndFeelOrFail;
 
 public class MainFrame extends JFrame {
-    private static final String TITLE = "YOLO: motors";
+    private static final String TITLE = "YOLO: AMK and inverters";
     private static final String ICON_PATH = "/res/images/logo.png";
     private final MotorsPanel motorPanels;
     private final CanMessagesFrame canMessagesFrame;
+    private final BatteryFrame batteryFrame;
     private Image appIcon;
 
     public MainFrame() {
         super(TITLE);
 
         motorPanels = new MotorsPanel();
         canMessagesFrame = new CanMessagesFrame();
+        batteryFrame = new BatteryFrame();
 
         setup();
         open();
@@ -40,7 +42,9 @@ private void open() {
             setNativeLookAndFeelOrFail();
             setVisible(true);
             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  // close app
-            canMessagesFrame.open();
+
+            canMessagesFrame.open();  // open rest of frames
+            batteryFrame.open();
         } catch (Exception e) {
             new YoloException(
                     "cannot open view",
@@ -130,6 +134,10 @@ public CanMessagesFrame getCanMessagesFrame() {
         return canMessagesFrame;
     }
 
+    public BatteryFrame getBatteryFrame() {
+        return batteryFrame;
+    }
+
     private void loadIcon() {
         try {
             appIcon = Toolkit.getDefaultToolkit().getImage(