Discovering comm ports

From Rxtx

Revision as of 10:54, 3 August 2007 (view source) 222.151.211.93 (Talk) ← Older edit		Latest revision as of 00:35, 15 June 2011 (view source) Vgerris (Talk | contribs)
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-	Hi guys,	+	This code snippet shows how to find out the available comms ports on your computer.:
-	I found so much useful things here.	+
-	Thank you.	+
-	[http://tylka.extra.hu/mature-sluts.html mature british sluts] |	+	<pre>
-	[http://tylka.extra.hu/mature-galleries.html adult galleries mature women] |	+	import gnu.io.*;
-	[http://tylka.extra.hu/mature-boobs.html busty mature fucking] |	+	static void listPorts()
-	[http://tylka.extra.hu/mature-ladies.html classy mature ladies]	+	{
		+	java.util.Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
		+	while ( portEnum.hasMoreElements() )
		+	{
		+	CommPortIdentifier portIdentifier = portEnum.nextElement();
		+	System.out.println(portIdentifier.getName()  +  " - " +  getPortTypeName(portIdentifier.getPortType()) );
		+	}
		+	}
		+
		+	static String getPortTypeName ( int portType )
		+	{
		+	switch ( portType )
		+	{
		+	case CommPortIdentifier.PORT_I2C:
		+	return "I2C";
		+	case CommPortIdentifier.PORT_PARALLEL:
		+	return "Parallel";
		+	case CommPortIdentifier.PORT_RAW:
		+	return "Raw";
		+	case CommPortIdentifier.PORT_RS485:
		+	return "RS485";
		+	case CommPortIdentifier.PORT_SERIAL:
		+	return "Serial";
		+	default:
		+	return "unknown type";
		+	}
		+	}
		+	</pre>
		+
		+	Please note that on Ubuntu 11.04, the Arduino Uno and possibly others are recognised as /dev/ttyACMxx .
		+	The RXTX library only searches through /dev/ttySxx, so you need to make symlinks if your distro does the same,
		+	so for example ln -s /dev/ttyACM0 /dev/ttyS33 .
		+
		+	Besides that, you need to close the serial port after starting, to prevent Linux from making new devices, like /dev/ttyACM2.
		+	Do not forget to remove the lock file from /var/lock if you forgot to close the port.

---

Latest revision as of 00:35, 15 June 2011

This code snippet shows how to find out the available comms ports on your computer.:

import gnu.io.*;
    static void listPorts()
    {
        java.util.Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
        while ( portEnum.hasMoreElements() ) 
        {
            CommPortIdentifier portIdentifier = portEnum.nextElement();
            System.out.println(portIdentifier.getName()  +  " - " +  getPortTypeName(portIdentifier.getPortType()) );
        }        
    }
    
    static String getPortTypeName ( int portType )
    {
        switch ( portType )
        {
            case CommPortIdentifier.PORT_I2C:
                return "I2C";
            case CommPortIdentifier.PORT_PARALLEL:
                return "Parallel";
            case CommPortIdentifier.PORT_RAW:
                return "Raw";
            case CommPortIdentifier.PORT_RS485:
                return "RS485";
            case CommPortIdentifier.PORT_SERIAL:
                return "Serial";
            default:
                return "unknown type";
        }
    }

Please note that on Ubuntu 11.04, the Arduino Uno and possibly others are recognised as /dev/ttyACMxx . The RXTX library only searches through /dev/ttySxx, so you need to make symlinks if your distro does the same, so for example ln -s /dev/ttyACM0 /dev/ttyS33 .

Besides that, you need to close the serial port after starting, to prevent Linux from making new devices, like /dev/ttyACM2. Do not forget to remove the lock file from /var/lock if you forgot to close the port.