Added an isOpen() function call.

INSTALL

@@ -123,31 +123,31 @@ Maven:
 <dependency>
 	<groupId>com.fazecast</groupId>
 	<artifactId>jSerialComm</artifactId>
-	<version>1.3.4</version>
+	<version>1.3.5</version>
 </dependency>
 
 Ivy:
 
-<dependency org="com.fazecast" name="jSerialComm" rev="1.3.4"/>
+<dependency org="com.fazecast" name="jSerialComm" rev="1.3.5"/>
 
 Grape:
 
 @Grapes(
-	@Grab(group='com.fazecast', module='jSerialComm', version='1.3.4')
+	@Grab(group='com.fazecast', module='jSerialComm', version='1.3.5')
 )
 
 Gradle:
 
-'com.fazecast:jSerialComm:1.3.4'
+'com.fazecast:jSerialComm:1.3.5'
 
 Buildr:
 
-'com.fazecast:jSerialComm:jar:1.3.4'
+'com.fazecast:jSerialComm:jar:1.3.5'
 
 SBT:
 
-libraryDependencies += "com.fazecast" % "jSerialComm" % "1.3.4"
+libraryDependencies += "com.fazecast" % "jSerialComm" % "1.3.5"
 
 Leiningen:
 
-[com.fazecast/jSerialComm "1.3.4"]
+[com.fazecast/jSerialComm "1.3.5"]

build.gradle

@@ -4,7 +4,7 @@ apply plugin: 'maven'
 
 group = 'com.fazecast'
 archivesBaseName = 'jSerialComm'
-version = '1.3.4'
+version = '1.3.5'
 
 sourceCompatibility = 1.6
 targetCompatibility = 1.6

src/main/java/com/fazecast/jSerialComm/SerialPort.java

@@ -38,7 +38,7 @@ import java.util.Date;
  * This class provides native access to serial ports and devices without requiring external libraries or tools.
  * 
  * @author Will Hedgecock <will.hedgecock@fazecast.com>
- * @version 1.3.4
+ * @version 1.3.5
  * @see java.io.InputStream
  * @see java.io.OutputStream
  */
@@ -257,12 +257,18 @@ public final class SerialPort
 	 * Opens this serial port for reading and writing.
 	 * <p>
 	 * All serial port parameters or timeouts can be changed at any time after the port has been opened.
+	 * <p>
+	 * Note that calling this method on an already opened port will simply return a value of true.
 	 *
 	 * @return Whether the port was successfully opened.
 	 */
 	public final boolean openPort()
 	{
-		// If this is an Android application, we must explicitly allow serial port access to this library
+		// Return true if already opened
+		if (isOpened)
+			return true;
+		
+		// If this is an Android root application, we must explicitly allow serial port access to this library
 		if (isAndroid)
 		{
 			try
@@ -277,7 +283,7 @@ public final class SerialPort
 		}
 		
 		try { Thread.sleep(500); } catch (Exception e) {}
-		if (!isOpened && (portHandle = openPortNative()) > 0)
+		if ((portHandle = openPortNative()) > 0)
 		{
 			inputStream = new SerialPortInputStream();
 			outputStream = new SerialPortOutputStream();
@@ -289,6 +295,8 @@ public final class SerialPort
 	
 	/**
 	 * Closes this serial port.
+	 * <p>
+	 * Note that calling this method on an already closed port will simply return a value of true.
 	 *
 	 * @return Whether the port was successfully closed.
 	 */
@@ -305,6 +313,13 @@ public final class SerialPort
 		return !isOpened;
 	}
 	
+	/**
+	 * Returns whether the port is currently open and available for communication.
+	 * 
+	 * @return Whether the port is opened.
+	 */
+	public final boolean isOpen() { return isOpened; }
+	
 	// Serial Port Setup Methods
 	private static native void initializeLibrary();						// Initializes the JNI code
 	private static native void uninitializeLibrary();					// Un-initializes the JNI code

src/main/java/com/fazecast/jSerialComm/SerialPortDataListener.java

@@ -31,7 +31,7 @@ import java.util.EventListener;
  * This interface must be implemented to enable simple event-based serial port I/O.
  * 
  * @author Will Hedgecock <will.hedgecock@fazecast.com>
- * @version 1.3.4
+ * @version 1.3.5
  * @see java.util.EventListener
  */
 public interface SerialPortDataListener extends EventListener

src/main/java/com/fazecast/jSerialComm/SerialPortEvent.java

@@ -31,7 +31,7 @@ import java.util.EventObject;
  * This class describes an asynchronous serial port event.
  * 
  * @author Will Hedgecock <will.hedgecock@fazecast.com>
- * @version 1.3.4
+ * @version 1.3.5
  * @see java.util.EventObject
  */
 public final class SerialPortEvent extends EventObject

src/main/java/com/fazecast/jSerialComm/SerialPortPacketListener.java

@@ -31,7 +31,7 @@ package com.fazecast.jSerialComm;
  * <i>Note</i>: Using this interface will negate any serial port read timeout settings since they make no sense in an asynchronous context.
  * 
  * @author Will Hedgecock &lt;will.hedgecock@fazecast.com&gt;
- * @version 1.3.4
+ * @version 1.3.5
  * @see com.fazecast.jSerialComm.SerialPortDataListener
  * @see java.util.EventListener
  */

src/test/java/com/fazecast/jSerialComm/SerialPortTest.java

@@ -32,7 +32,7 @@ import java.util.Scanner;
  * This class provides a test case for the jSerialComm library.
  * 
  * @author Will Hedgecock <will.hedgecock@gmail.com>
- * @version 1.3.4
+ * @version 1.3.5
  * @see java.io.InputStream
  * @see java.io.OutputStream
  */