Initialisierung verbessert

Form1.Designer.cs

             this.button1 = new System.Windows.Forms.Button();
             this.webCamRotatorPowerSwitch = new FSRemotePowerSwitch.SButton();
             this.powerSwitchButton = new FSRemotePowerSwitch.SButton();
+            this.webCamRotVelocityLbl = new System.Windows.Forms.Label();
+            this.webCamRotatorVelocitySwitch = new FSRemotePowerSwitch.SButton();
+            this.webCamRotatorVelocitySlowLbl = new System.Windows.Forms.Label();
+            this.webCamRotatorVelocityFastLbl = new System.Windows.Forms.Label();
             this.statusBar.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.powerStateLed)).BeginInit();
             this.label1.AutoSize = true;
             this.label1.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.label1.ForeColor = System.Drawing.SystemColors.HotTrack;
-            this.label1.Location = new System.Drawing.Point(44, 219);
+            this.label1.Location = new System.Drawing.Point(44, 230);
             this.label1.Name = "label1";
             this.label1.Size = new System.Drawing.Size(135, 19);
             this.label1.TabIndex = 13;
             this.powerStateLed.BackgroundImage = global::FSRemotePowerSwitch.Properties.Resources.blue_led_off;
             this.powerStateLed.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
             this.powerStateLed.InitialImage = null;
-            this.powerStateLed.Location = new System.Drawing.Point(92, 258);
+            this.powerStateLed.Location = new System.Drawing.Point(92, 269);
             this.powerStateLed.Name = "powerStateLed";
             this.powerStateLed.Size = new System.Drawing.Size(40, 40);
             this.powerStateLed.TabIndex = 12;
             this.webCamRotator.KnobBackColor = System.Drawing.Color.Silver;
             this.webCamRotator.KnobPointerStyle = KnobControl.KnobControl.KnobPointerStyles.circle;
             this.webCamRotator.LargeChange = 5;
-            this.webCamRotator.Location = new System.Drawing.Point(247, 122);
+            this.webCamRotator.Location = new System.Drawing.Point(234, 133);
             this.webCamRotator.Maximum = 180;
             this.webCamRotator.Minimum = -180;
             this.webCamRotator.Name = "webCamRotator";
             this.rotatorActValue.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
             this.rotatorActValue.Font = new System.Drawing.Font("Bahnschrift", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.rotatorActValue.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(151)))), ((int)(((byte)(156)))));
-            this.rotatorActValue.Location = new System.Drawing.Point(309, 264);
+            this.rotatorActValue.Location = new System.Drawing.Point(296, 275);
             this.rotatorActValue.Name = "rotatorActValue";
             this.rotatorActValue.Size = new System.Drawing.Size(40, 20);
             this.rotatorActValue.TabIndex = 18;
             this.webCamRotatorLbl.AutoSize = true;
             this.webCamRotatorLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.webCamRotatorLbl.ForeColor = System.Drawing.SystemColors.HotTrack;
-            this.webCamRotatorLbl.Location = new System.Drawing.Point(261, 96);
+            this.webCamRotatorLbl.Location = new System.Drawing.Point(248, 96);
             this.webCamRotatorLbl.Name = "webCamRotatorLbl";
             this.webCamRotatorLbl.Size = new System.Drawing.Size(137, 19);
             this.webCamRotatorLbl.TabIndex = 19;
             this.webCamRotPowerLbl.AutoSize = true;
             this.webCamRotPowerLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.webCamRotPowerLbl.ForeColor = System.Drawing.SystemColors.HotTrack;
-            this.webCamRotPowerLbl.Location = new System.Drawing.Point(412, 219);
+            this.webCamRotPowerLbl.Location = new System.Drawing.Point(400, 230);
             this.webCamRotPowerLbl.Name = "webCamRotPowerLbl";
             this.webCamRotPowerLbl.Size = new System.Drawing.Size(157, 19);
             this.webCamRotPowerLbl.TabIndex = 21;
             this.webCamRotatorPowerStatusLed.BackgroundImage = global::FSRemotePowerSwitch.Properties.Resources.blue_led_off;
             this.webCamRotatorPowerStatusLed.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
             this.webCamRotatorPowerStatusLed.InitialImage = null;
-            this.webCamRotatorPowerStatusLed.Location = new System.Drawing.Point(525, 258);
+            this.webCamRotatorPowerStatusLed.Location = new System.Drawing.Point(512, 269);
             this.webCamRotatorPowerStatusLed.Name = "webCamRotatorPowerStatusLed";
             this.webCamRotatorPowerStatusLed.Size = new System.Drawing.Size(40, 40);
             this.webCamRotatorPowerStatusLed.TabIndex = 20;
             this.webCamRotPwrStatusLbl.AutoSize = true;
             this.webCamRotPwrStatusLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 10F, System.Drawing.FontStyle.Bold);
             this.webCamRotPwrStatusLbl.ForeColor = System.Drawing.SystemColors.HotTrack;
-            this.webCamRotPwrStatusLbl.Location = new System.Drawing.Point(524, 241);
+            this.webCamRotPwrStatusLbl.Location = new System.Drawing.Point(511, 252);
             this.webCamRotPwrStatusLbl.Name = "webCamRotPwrStatusLbl";
             this.webCamRotPwrStatusLbl.Size = new System.Drawing.Size(43, 17);
             this.webCamRotPwrStatusLbl.TabIndex = 22;
             this.webCamRotatorPowerOffLbl.AutoSize = true;
             this.webCamRotatorPowerOffLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold);
             this.webCamRotatorPowerOffLbl.ForeColor = System.Drawing.Color.Red;
-            this.webCamRotatorPowerOffLbl.Location = new System.Drawing.Point(413, 267);
+            this.webCamRotatorPowerOffLbl.Location = new System.Drawing.Point(400, 278);
             this.webCamRotatorPowerOffLbl.Name = "webCamRotatorPowerOffLbl";
             this.webCamRotatorPowerOffLbl.Size = new System.Drawing.Size(34, 19);
             this.webCamRotatorPowerOffLbl.TabIndex = 23;
             this.webCamRotatorPowerOnLbl.AutoSize = true;
             this.webCamRotatorPowerOnLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold);
             this.webCamRotatorPowerOnLbl.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(151)))), ((int)(((byte)(156)))));
-            this.webCamRotatorPowerOnLbl.Location = new System.Drawing.Point(491, 268);
+            this.webCamRotatorPowerOnLbl.Location = new System.Drawing.Point(478, 279);
             this.webCamRotatorPowerOnLbl.Name = "webCamRotatorPowerOnLbl";
             this.webCamRotatorPowerOnLbl.Size = new System.Drawing.Size(30, 19);
             this.webCamRotatorPowerOnLbl.TabIndex = 24;
             this.label2.AutoSize = true;
             this.label2.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.label2.ForeColor = System.Drawing.SystemColors.HotTrack;
-            this.label2.Location = new System.Drawing.Point(427, 135);
+            this.label2.Location = new System.Drawing.Point(400, 96);
             this.label2.Name = "label2";
             this.label2.Size = new System.Drawing.Size(128, 19);
             this.label2.TabIndex = 26;
             // 
             // button1
             // 
-            this.button1.Location = new System.Drawing.Point(456, 165);
+            this.button1.Location = new System.Drawing.Point(403, 123);
             this.button1.Name = "button1";
             this.button1.Size = new System.Drawing.Size(75, 26);
             this.button1.TabIndex = 27;
             // 
             // webCamRotatorPowerSwitch
             // 
-            this.webCamRotatorPowerSwitch.Location = new System.Drawing.Point(447, 267);
+            this.webCamRotatorPowerSwitch.Location = new System.Drawing.Point(434, 278);
             this.webCamRotatorPowerSwitch.MinimumSize = new System.Drawing.Size(45, 22);
             this.webCamRotatorPowerSwitch.Name = "webCamRotatorPowerSwitch";
             this.webCamRotatorPowerSwitch.OffBackColor = System.Drawing.Color.Gray;
             this.powerSwitchButton.UseVisualStyleBackColor = true;
             this.powerSwitchButton.CheckStateChanged += new System.EventHandler(this.onSwitchCheckStateChanged);
             // 
+            // webCamRotVelocityLbl
+            // 
+            this.webCamRotVelocityLbl.AutoSize = true;
+            this.webCamRotVelocityLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.webCamRotVelocityLbl.ForeColor = System.Drawing.SystemColors.HotTrack;
+            this.webCamRotVelocityLbl.Location = new System.Drawing.Point(400, 165);
+            this.webCamRotVelocityLbl.Name = "webCamRotVelocityLbl";
+            this.webCamRotVelocityLbl.Size = new System.Drawing.Size(170, 19);
+            this.webCamRotVelocityLbl.TabIndex = 28;
+            this.webCamRotVelocityLbl.Text = "WebCam Geschwindigkeit";
+            // 
+            // webCamRotatorVelocitySwitch
+            // 
+            this.webCamRotatorVelocitySwitch.Location = new System.Drawing.Point(447, 194);
+            this.webCamRotatorVelocitySwitch.MinimumSize = new System.Drawing.Size(45, 22);
+            this.webCamRotatorVelocitySwitch.Name = "webCamRotatorVelocitySwitch";
+            this.webCamRotatorVelocitySwitch.OffBackColor = System.Drawing.Color.Gray;
+            this.webCamRotatorVelocitySwitch.OffToggleColor = System.Drawing.Color.Gainsboro;
+            this.webCamRotatorVelocitySwitch.OnBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(151)))), ((int)(((byte)(156)))));
+            this.webCamRotatorVelocitySwitch.OnToggleColor = System.Drawing.Color.WhiteSmoke;
+            this.webCamRotatorVelocitySwitch.Size = new System.Drawing.Size(45, 22);
+            this.webCamRotatorVelocitySwitch.TabIndex = 31;
+            this.webCamRotatorVelocitySwitch.UseVisualStyleBackColor = true;
+            // 
+            // webCamRotatorVelocitySlowLbl
+            // 
+            this.webCamRotatorVelocitySlowLbl.AutoSize = true;
+            this.webCamRotatorVelocitySlowLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold);
+            this.webCamRotatorVelocitySlowLbl.ForeColor = System.Drawing.Color.Red;
+            this.webCamRotatorVelocitySlowLbl.Location = new System.Drawing.Point(400, 194);
+            this.webCamRotatorVelocitySlowLbl.Name = "webCamRotatorVelocitySlowLbl";
+            this.webCamRotatorVelocitySlowLbl.Size = new System.Drawing.Size(45, 19);
+            this.webCamRotatorVelocitySlowLbl.TabIndex = 29;
+            this.webCamRotatorVelocitySlowLbl.Text = "SLOW";
+            // 
+            // webCamRotatorVelocityFastLbl
+            // 
+            this.webCamRotatorVelocityFastLbl.AutoSize = true;
+            this.webCamRotatorVelocityFastLbl.Font = new System.Drawing.Font("Bahnschrift SemiBold SemiConden", 12F, System.Drawing.FontStyle.Bold);
+            this.webCamRotatorVelocityFastLbl.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(151)))), ((int)(((byte)(156)))));
+            this.webCamRotatorVelocityFastLbl.Location = new System.Drawing.Point(494, 195);
+            this.webCamRotatorVelocityFastLbl.Name = "webCamRotatorVelocityFastLbl";
+            this.webCamRotatorVelocityFastLbl.Size = new System.Drawing.Size(38, 19);
+            this.webCamRotatorVelocityFastLbl.TabIndex = 30;
+            this.webCamRotatorVelocityFastLbl.Text = "FAST";
+            // 
             // MainForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 18F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(584, 361);
+            this.Controls.Add(this.webCamRotatorVelocitySwitch);
+            this.Controls.Add(this.webCamRotatorVelocitySlowLbl);
+            this.Controls.Add(this.webCamRotatorVelocityFastLbl);
+            this.Controls.Add(this.webCamRotVelocityLbl);
             this.Controls.Add(this.button1);
             this.Controls.Add(this.label2);
             this.Controls.Add(this.webCamRotatorPowerSwitch);
         private System.Windows.Forms.Label webCamRotatorPowerOnLbl;
         private System.Windows.Forms.Label label2;
         private System.Windows.Forms.Button button1;
+        private System.Windows.Forms.Label webCamRotVelocityLbl;
+        private SButton webCamRotatorVelocitySwitch;
+        private System.Windows.Forms.Label webCamRotatorVelocitySlowLbl;
+        private System.Windows.Forms.Label webCamRotatorVelocityFastLbl;
     }
 }
 

Form1.cs

             set { connected = value; }
         }
 
-        private bool requestPending;
-        private Boolean RequestPending {
+        private static bool requestPending;
+        private static Boolean RequestPending {
             [MethodImpl(MethodImplOptions.Synchronized)]
             get { return requestPending; }
             [MethodImpl(MethodImplOptions.Synchronized)]
-            set { requestPending = value; System.Console.WriteLine(value); }
+            set { requestPending = value; }
         }
 
         private Boolean initializing;
         public MainForm() {
             initializing = false;
             Connected = false;
-            RequestPending = false;
             firmwareVersion = new PropertiesHandler(SETTINGS_FILE).get(EXP_FIRMWARE_VER, "V0.0.1");
             timerCount = 0;
             InitializeComponent();
             while (stopwatch.ElapsedMilliseconds < 3000) {
                 Thread.Sleep(50);
                 if (Connected) {
-                    reconnectBtn.Visible = false;
+                    waitForPendingRequest();
+                    sendRelayStatusCmd();
+                    waitForPendingRequest();
+                    sendWebCamStatusCmd();
+                    waitForPendingRequest();
+                    sendWebCamActualAzimutCmd();
+                    BeginInvoke(new EventHandler(delegate {
+                        reconnectBtn.Visible = false;
+                    }));
                     break;
                 }
             }
             Cursor.Position = Cursor.Position;
         }
 
+        private void waitForPendingRequest() {
+            while(RequestPending) {
+                Thread.Sleep(2);
+            }
+        }
+
         private void initializeSerialPortComboBox() {
             initializing = true;
             string[] ports = SerialPort.GetPortNames();
         }
 
         private void onSerialPortDataReceived(object sender, SerialDataReceivedEventArgs e) {
-            string s = readSerialPortData((SerialPort)sender);
-            try {
+            while (serialPort.IsOpen && serialPort.BytesToRead > 0) {
+                string s = readSerialPortData((SerialPort)sender);
                 Message msg = JsonConvert.DeserializeObject<Message>(s);
 
-                if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_VER) && msg.Val.Equals(firmwareVersion)) {
-                    RequestPending = false;
-                    BeginInvoke(new EventHandler(delegate {
-                        sendRelayStatusCmd();
-                        Connected = true;
-                        initStatusLbl.Text = "Verbunden";
-                        connectedSerialPortLbl.Text = "Port: " + ((SerialPort)sender).PortName;
-                        fwVersionLbl.Text = "Ver: " + firmwareVersion;
-                        initProgressBar.Style = ProgressBarStyle.Continuous;
-                        initProgressBar.Value = 100;
-                        openBtn.Enabled = false;
-                        closeBtn.Enabled = true;
-                        powerSwitchButton.Enabled = true;
-                        statusTimer.Enabled = true;
-                    }));
-                } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_STATUS_RELAY)) {
-                    RequestPending = false;
-                    BeginInvoke(new EventHandler(delegate {
-                        if (msg.Val.Equals(Message.CMD_VAL_ON)) {
-                            powerStateLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_on;
-                            powerSwitchButton.CheckStateChanged -= onSwitchCheckStateChanged;
-                            powerSwitchButton.Checked = true;
-                            powerSwitchButton.CheckStateChanged += onSwitchCheckStateChanged;
-                        } else if (msg.Val.Equals(Message.CMD_VAL_OFF)) {
-                            powerStateLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_off;
-                            powerSwitchButton.CheckStateChanged -= onSwitchCheckStateChanged;
-                            powerSwitchButton.Checked = false;
-                            powerSwitchButton.CheckStateChanged += onSwitchCheckStateChanged;
-                        }
-                    }));
-                } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_STATUS_CAM)) {
-                    RequestPending = false;
-                    BeginInvoke(new EventHandler(delegate {
-                        if (msg.Val.Equals(Message.CMD_VAL_ON)) {
-                            webCamRotatorPowerStatusLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_on;
-                            webCamRotatorPowerSwitch.CheckStateChanged -= onWebCamPowerSwitchCheckStateChanged;
-                            webCamRotatorPowerSwitch.Checked = true;
-                            webCamRotatorPowerSwitch.CheckStateChanged += onWebCamPowerSwitchCheckStateChanged;
-                        } else if (msg.Val.Equals(Message.CMD_VAL_OFF)) {
-                            webCamRotatorPowerStatusLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_off;
-                            webCamRotatorPowerSwitch.CheckStateChanged -= onWebCamPowerSwitchCheckStateChanged;
-                            webCamRotatorPowerSwitch.Checked = false;
-                            webCamRotatorPowerSwitch.CheckStateChanged += onWebCamPowerSwitchCheckStateChanged;
-                        }
-                    }));
-                } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_ZERO_CAM)) {
-                    RequestPending = false;
-                    BeginInvoke(new EventHandler(delegate {
-                        webCamRotator.Value = int.Parse(msg.Val);
-                    }));
+                try {
+                    if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_VER) && msg.Val.Equals(firmwareVersion)) {
+                        BeginInvoke(new EventHandler(delegate {
+                            Connected = true;
+                            initStatusLbl.Text = "Verbunden";
+                            connectedSerialPortLbl.Text = "Port: " + ((SerialPort)sender).PortName;
+                            fwVersionLbl.Text = "Ver: " + firmwareVersion;
+                            initProgressBar.Style = ProgressBarStyle.Continuous;
+                            initProgressBar.Value = 100;
+                            openBtn.Enabled = false;
+                            closeBtn.Enabled = true;
+                            powerSwitchButton.Enabled = true;
+                            statusTimer.Enabled = true;
+                        }));
+                    } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_STATUS_RELAY)) {
+                        RequestPending = false;
+                        BeginInvoke(new EventHandler(delegate {
+                            if (msg.Val.Equals(Message.CMD_VAL_ON)) {
+                                powerStateLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_on;
+                                powerSwitchButton.CheckStateChanged -= onSwitchCheckStateChanged;
+                                powerSwitchButton.Checked = true;
+                                powerSwitchButton.CheckStateChanged += onSwitchCheckStateChanged;
+                            } else if (msg.Val.Equals(Message.CMD_VAL_OFF)) {
+                                powerStateLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_off;
+                                powerSwitchButton.CheckStateChanged -= onSwitchCheckStateChanged;
+                                powerSwitchButton.Checked = false;
+                                powerSwitchButton.CheckStateChanged += onSwitchCheckStateChanged;
+                            }
+                        }));
+                    } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_STATUS_CAM)) {
+                        RequestPending = false;
+                        BeginInvoke(new EventHandler(delegate {
+                            if (msg.Val.Equals(Message.CMD_VAL_ON)) {
+                                webCamRotatorPowerStatusLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_on;
+                                webCamRotatorPowerSwitch.CheckStateChanged -= onWebCamPowerSwitchCheckStateChanged;
+                                webCamRotatorPowerSwitch.Checked = true;
+                                webCamRotatorPowerSwitch.CheckStateChanged += onWebCamPowerSwitchCheckStateChanged;
+                            } else if (msg.Val.Equals(Message.CMD_VAL_OFF)) {
+                                webCamRotatorPowerStatusLed.BackgroundImage = FSRemotePowerSwitch.Properties.Resources.blue_led_off;
+                                webCamRotatorPowerSwitch.CheckStateChanged -= onWebCamPowerSwitchCheckStateChanged;
+                                webCamRotatorPowerSwitch.Checked = false;
+                                webCamRotatorPowerSwitch.CheckStateChanged += onWebCamPowerSwitchCheckStateChanged;
+                            }
+                        }));
+                    } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_ZERO_CAM)) {
+                        BeginInvoke(new EventHandler(delegate {
+                            webCamRotator.Value = int.Parse(msg.Val);
+                        }));
+                    } else if (msg.Sender.Equals(Message.CMD_SENDER_AN) && msg.Cmd.Equals(Message.CMD_ACT_AZIMUT_CAM)) {
+                        RequestPending = false;
+                        BeginInvoke(new EventHandler(delegate {
+                            webCamRotator.Value = int.Parse(msg.Val);
+                        }));
+                    }
+                } catch (Exception ex) when (ex is Newtonsoft.Json.JsonReaderException ||
+                                             ex is Newtonsoft.Json.JsonSerializationException) {
+                    initStatusLbl.Text = "Json Deserialize Exception!";
+                    serialPort.DiscardInBuffer();
+                    serialPort.DiscardOutBuffer();
+                    serialPort.Dispose();
                 }
-            } catch (Exception ex) /*when (ex is Newtonsoft.Json.JsonReaderException ||
-                                         ex is Newtonsoft.Json.JsonSerializationException)*/ {
-                RequestPending = false;
-                initStatusLbl.Text = "Json Deserialize Exception!";
-                serialPort.DiscardInBuffer();
-                serialPort.DiscardOutBuffer();
-                serialPort.Dispose();
             }
         }
 
 
         private String readSerialPortData(SerialPort serialPort) {
             string data = "";
-            while (serialPort.BytesToRead > 0) {
-                data += serialPort.ReadExisting();
-                Thread.Sleep(50);
-            }
+            int character = 0; ;
+            do {
+                if (serialPort.IsOpen) {
+                    character = serialPort.ReadByte();
+                    data += (char)character;
+                }
+            } while ((char)character != '}');
             return data;
         }
 
             msg.Cmd = Message.CMD_VER;
             msg.Val = null;
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
-                RequestPending = true;
             }
         }
 
             msg.Cmd = Message.CMD_POWER_RELAY;
             msg.Val = value;
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
-                RequestPending = true;
             }
         }
 
             msg.Cmd = Message.CMD_STATUS_RELAY;
             msg.Val = null;
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
                 RequestPending = true;
             }
             msg.Cmd = Message.CMD_STATUS_CAM;
             msg.Val = null;
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
                 RequestPending = true;
             }
             msg.Cmd = Message.CMD_POWER_CAM;
             msg.Val = value;
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
-                RequestPending = true;
             }
         }
 
             msg.Cmd = Message.CMD_ZERO_CAM;
             msg.Val = "0";
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
-                RequestPending = true;
             }
         }
 
             msg.Cmd = Message.CMD_AZIMUT_CAM;
             msg.Val = webCamRotator.Value.ToString();
             string msJson = JsonConvert.SerializeObject(msg);
-            if (serialPort.IsOpen && !RequestPending) {
+            if (serialPort.IsOpen) {
                 serialPort.Write(msJson);
             }
         }
 
+        private void sendWebCamActualAzimutCmd() {
+            Message msg = new Message();
+            msg.Sender = Message.CMD_SENDER_PC;
+            msg.Cmd = Message.CMD_ACT_AZIMUT_CAM;
+            msg.Val = "";
+            string msJson = JsonConvert.SerializeObject(msg);
+            if (serialPort.IsOpen) {
+                serialPort.Write(msJson);
+                RequestPending = true;
+            }
+        }
+
         private void onStatusTimerTick(object sender, EventArgs e) {
             if (timerCount % 2 == 0) {
                 sendWebCamStatusCmd();
         }
 
         private void onMainFormClosing(object sender, FormClosingEventArgs e) {
-            Stopwatch stopwatch = new Stopwatch();
-            stopwatch.Start();
-            while (RequestPending && stopwatch.ElapsedMilliseconds < 2000) {
-                Thread.Sleep(50);
-            }
             if (serialPort.IsOpen) {
                 serialPort.DiscardInBuffer();
                 serialPort.DiscardOutBuffer();

Message.cs

         public static string CMD_STATUS_CAM = "Status_Cam";
         public static string CMD_POWER_CAM = "Power_Cam";
         public static string CMD_AZIMUT_CAM = "Azimut_Cam";
+        public static string CMD_ACT_AZIMUT_CAM = "Actual_Azimut_Cam";
         public static string CMD_ZERO_CAM = "Zero_Cam";
         public static string CMD_VAL_ON = "On";
         public static string CMD_VAL_OFF = "Off";