refactor protocol

SerialPortCtrl.cs

@@ -0,0 +1,108 @@
+/*
+ * Author: Pawel Walczak (pewusoft)
+ * Date: 2015-01-12 20:50
+ *
+ */
+using System;
+using System.IO.Ports;
+using System.IO;
+using System.Windows.Forms;
+
+
+namespace SDRSharp.SerialController
+{
+	public class SerialPortCtrl
+	{
+		public bool IsOpen {
+			get { return _port != null && _port.IsOpen; }
+		}
+		
+		SerialPort _port;
+		ProtocolInterface _protocol;
+		
+		public SerialPortCtrl(ProtocolInterface protocol)
+		{
+			_protocol = protocol;
+		}
+		
+    	public static string[] GetAllPorts()
+		{
+			try {
+				return SerialPort.GetPortNames();
+    		}
+    		catch (Exception e) {
+    			MessageBox.Show("Couldn't read port list:\n"+e.ToString(), "SerialController", MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return new string[0];
+			}
+		}
+		
+		public bool openPort(string portName)
+		{
+			try {
+	    		if (_port != null && _port.IsOpen)
+					return false;
+    			
+    			if (portName == null || (portName.Trim().Equals("")))
+    				return false;
+
+				_port = new SerialPort(portName, 9600, Parity.None, 8, StopBits.One);
+				_port.DataReceived += new SerialDataReceivedEventHandler( DataReceivedHandler );
+						
+				if (_port != null) {
+					_port.Open();
+					return true;
+				}
+				return false;
+			}
+			catch (Exception e) {
+    			MessageBox.Show("Couldn't open port "+portName+":\n"+e.ToString(), "SerialController",
+    			                MessageBoxButtons.OK, MessageBoxIcon.Error);
+				return false;
+			}
+		}
+		
+		public bool closePort()
+		{
+			if (_port != null)	{
+				if (_port.IsOpen) {
+					try {
+						_port.Close();
+						return true;
+					}
+					catch (IOException)	 {
+						return false;
+					}
+				}
+				else {
+					return false;
+				}
+			}
+			return false;
+		}
+		
+		void DataReceivedHandler(object sender, SerialDataReceivedEventArgs e)
+        {
+			string data = "";
+			while (data.IndexOf(_protocol.EndMarker) < 0) {
+				byte[] bytes = new byte[_port.BytesToRead+32];
+				try {
+					_port.Read(bytes, 0, _port.BytesToRead);
+				}
+				catch (Exception) {
+					return;
+				}
+				data += System.Text.Encoding.UTF8.GetString(bytes);
+			}
+			data = data.Substring(0, data.IndexOf(_protocol.EndMarker));
+			
+			string response = _protocol.PktReceiver(data);
+			if (! string.IsNullOrEmpty(response))
+				DataTransmit(response);
+        }
+		
+		public void DataTransmit(string data)
+		{
+			_port.Write(data);
+		}
+	}
+}