Implement setting WiFi credentials via GUI

build.gradle

@@ -27,6 +27,7 @@ dependencies {
     api 'net.java.dev.jna:jna:5.6.0'
     api 'net.java.dev.jna:jna-platform:5.6.0'
     api 'com.illposed.osc:javaosc-core:0.8'
+    api 'com.fazecast:jSerialComm:[2.0.0,3.0.0)'
 
     // This dependency is used internally, and not exposed to consumers on their own compile classpath.
     implementation 'com.google.guava:guava:28.2-jre'

src/main/java/io/eiren/gui/VRServerGUI.java

@@ -110,6 +110,16 @@ public void mouseClicked(MouseEvent e) {
 				});
 			}});
 			add(Box.createHorizontalStrut(10));
+			add(new JButton("WiFi") {{
+				addMouseListener(new MouseInputAdapter() {
+					@SuppressWarnings("unused")
+					@Override
+					public void mouseClicked(MouseEvent e) {
+						new WiFiWindow(VRServerGUI.this);
+					}
+				});
+			}});
+			add(Box.createHorizontalStrut(10));
 		}});
 
 		pane.add(new EJBox(LINE_AXIS) {{

src/main/java/io/eiren/gui/WiFiWindow.java

@@ -0,0 +1,171 @@
+package io.eiren.gui;
+
+import java.awt.Container;
+import java.awt.event.MouseEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Reader;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import javax.swing.BoxLayout;
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+import javax.swing.JTextField;
+import javax.swing.ScrollPaneConstants;
+import javax.swing.WindowConstants;
+import javax.swing.event.MouseInputAdapter;
+
+import com.fazecast.jSerialComm.SerialPort;
+
+import io.eiren.util.ann.AWTThread;
+
+public class WiFiWindow extends JFrame {
+
+	private static final Timer timer = new Timer();
+	private static String savedSSID = "";
+	private static String savedPassword = "";
+	JTextField ssidField;
+	JTextField passwdField;
+	SerialPort trackerPort = null;
+	JTextArea log;
+	TimerTask readTask;
+
+	public WiFiWindow(VRServerGUI gui) {
+		super("WiFi Settings");
+		getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.LINE_AXIS));
+
+		build();
+	}
+
+	@AWTThread
+	private void build() {
+		Container pane = getContentPane();
+
+
+		SerialPort[] ports = SerialPort.getCommPorts();
+		for(SerialPort port : ports) {
+			if(port.getDescriptivePortName().contains("CH340")) {
+				trackerPort = port;
+				break;
+			}
+		}
+		pane.add(new EJBox(BoxLayout.PAGE_AXIS) {{
+			if(trackerPort == null) {
+				add(new JLabel("No trackers connected, connect tracker to USB and reopen window"));
+				timer.schedule(new TimerTask() {
+					@Override
+					public void run() {
+						WiFiWindow.this.dispose();
+					}
+				}, 5000);
+			} else {
+				add(new JLabel("Tracker connected to " + trackerPort.getSystemPortName() + " (" + trackerPort.getDescriptivePortName() + ")"));
+				JScrollPane scroll;
+				add(scroll = new JScrollPane(log = new JTextArea(10, 20), ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER));
+				log.setLineWrap(true);
+				scroll.setAutoscrolls(true);
+				if(trackerPort.openPort()) {
+					trackerPort.setBaudRate(115200);
+					log.append("[OK] Port opened\n");
+					readTask = new ReadTask();
+					timer.schedule(readTask, 500, 500);
+				} else {
+					log.append("ERROR: Can't open port");
+				}
+
+				add(new JLabel("Enter WiFi credentials:"));
+				add(new EJBox(BoxLayout.LINE_AXIS) {{
+					add(new JLabel("Network name:"));
+					add(ssidField = new JTextField(savedSSID));
+				}});
+				add(new EJBox(BoxLayout.LINE_AXIS) {{
+					add(new JLabel("Network password:"));
+					add(passwdField = new JTextField(savedPassword));
+				}});
+				add(new JButton("Send") {{
+					addMouseListener(new MouseInputAdapter() {
+						@Override
+						public void mouseClicked(MouseEvent e) {
+							send(ssidField.getText(), passwdField.getText());
+						}
+					});
+				}});
+			}
+		}});
+
+
+		// Pack and display
+		pack();
+		setLocationRelativeTo(null);
+		setVisible(true);
+		java.awt.EventQueue.invokeLater(new Runnable() {
+			@Override
+			public void run() {
+				toFront();
+				repaint();
+			}
+		});
+		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
+		addWindowListener(new WindowAdapter() {
+	        @Override
+	        public void windowClosing(WindowEvent windowEvent) {
+	            if(trackerPort != null)
+	            	trackerPort.closePort();
+	            if(readTask != null)
+	            	readTask.cancel();
+	            System.out.println("Port closed okay");
+	            dispose();
+	        }
+	    });
+	}
+
+	protected void send(String ssid, String passwd) {
+		savedSSID = ssid;
+		savedPassword = passwd;
+		OutputStream os = trackerPort.getOutputStream();
+		OutputStreamWriter writer = new OutputStreamWriter(os);
+		try {
+			writer.append("SET WIFI \"" + ssid + "\" \"" + passwd + "\"\n");
+			writer.flush();
+		} catch(IOException e) {
+			log.append(e.toString() + "\n");
+			e.printStackTrace();
+		}
+	}
+
+	private class ReadTask extends TimerTask {
+
+		final InputStream is;
+		final Reader reader;
+		StringBuffer sb = new StringBuffer();
+
+		public ReadTask() {
+			is = trackerPort.getInputStreamWithSuppressedTimeoutExceptions();
+			reader = new InputStreamReader(is);
+		}
+
+		@Override
+		public void run() {
+			try {
+				while(reader.ready())
+					sb.appendCodePoint(reader.read());
+				if(sb.length() > 0)
+					log.append(sb.toString());
+				sb.setLength(0);
+			} catch(Exception e) {
+				log.append(e.toString() + "\n");
+				e.printStackTrace();
+			}
+		}
+
+	}
+}

src/main/java/io/eiren/vr/Main.java

@@ -8,7 +8,7 @@
 
 public class Main {
 
-	public static String VERSION = "0.0.7 DEV 1";
+	public static String VERSION = "0.0.9";
 
 	public static VRServer vrServer;