Two way communcation with the serial port

From Rxtx

(Difference between revisions)

Latest revision as of 22:16, 1 February 2008

Below is a simple program that shows how to open a connection to a serial device and then interact with it (receiving data and sending data). One thing to note is that the package gnu.io is used instead of javax.comm, though other than the change in package name the API follows the Java Communication API. To find the names of the available ports, see the Discovering comm ports example.

import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;

import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class TwoWaySerialComm
{
    public TwoWaySerialComm()
    {
        super();
    }
    
    void connect ( String portName ) throws Exception
    {
        CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(portName);
        if ( portIdentifier.isCurrentlyOwned() )
        {
            System.out.println("Error: Port is currently in use");
        }
        else
        {
            CommPort commPort = portIdentifier.open(this.getClass().getName(),2000);
            
            if ( commPort instanceof SerialPort )
            {
                SerialPort serialPort = (SerialPort) commPort;
                serialPort.setSerialPortParams(57600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
                
                InputStream in = serialPort.getInputStream();
                OutputStream out = serialPort.getOutputStream();
                
                (new Thread(new SerialReader(in))).start();
                (new Thread(new SerialWriter(out))).start();

            }
            else
            {
                System.out.println("Error: Only serial ports are handled by this example.");
            }
        }     
    }
    
    /** */
    public static class SerialReader implements Runnable 
    {
        InputStream in;
        
        public SerialReader ( InputStream in )
        {
            this.in = in;
        }
        
        public void run ()
        {
            byte[] buffer = new byte[1024];
            int len = -1;
            try
            {
                while ( ( len = this.in.read(buffer)) > -1 )
                {
                    System.out.print(new String(buffer,0,len));
                }
            }
            catch ( IOException e )
            {
                e.printStackTrace();
            }            
        }
    }

    /** */
    public static class SerialWriter implements Runnable 
    {
        OutputStream out;
        
        public SerialWriter ( OutputStream out )
        {
            this.out = out;
        }
        
        public void run ()
        {
            try
            {                
                int c = 0;
                while ( ( c = System.in.read()) > -1 )
                {
                    this.out.write(c);
                }                
            }
            catch ( IOException e )
            {
                e.printStackTrace();
            }            
        }
    }
    
    public static void main ( String[] args )
    {
        try
        {
            (new TwoWaySerialComm()).connect("COM3");
        }
        catch ( Exception e )
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

Revision as of 09:33, 7 July 2007 (view source) 203.166.160.74 (Talk) ← Older edit		Latest revision as of 22:16, 1 February 2008 (view source) Ajmas (Talk \| contribs) m (Protected "Two way communcation with the serial port" [edit=sysop:move=sysop])
(47 intermediate revisions not shown)
Line 1:		Line 1:
-	[http://people.msoe.edu/~millerni/forums.php?show=topic&id=133&forum=13 qwest ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=130&forum=13 cheap propecia] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=129&forum=13 free polyphonic ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=221 cool ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=213 polyphonic ringtones] [http://wc1.worldcrossing.com/WebX/.1de609f4 free mono ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=106&forum=13 cheap hydrocodone] [http://wc1.worldcrossing.com/WebX/.1de609db but adipex] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=84&forum=13 free alltel ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=334 valium online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=146&forum=13 tenuate online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=128&forum=13 cheap phentermine] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=85&forum=13 alprazolam online] [http://wc1.worldcrossing.com/WebX/.1de60a1e flexeril online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=196 buy hgh] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=114&forum=13 online meridia] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=150&forum=13 cheap ultram] [http://news.engin.brown.edu/forums/thread-view.asp?tid=201 free free ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=103&forum=13 free funny ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=194 diethylpropion online] [http://wc1.worldcrossing.com/WebX/.1de609fe qwest ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=207 free real ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=186 lipitor online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=149&forum=13 ultracet online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=148&forum=13 tramadol online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=159 cialis online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=142&forum=13 sony ericsson ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=203 funny ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a32 zoloft] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=120&forum=13 music ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=336 cheap carisoprodol] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=160&forum=13 zanaflex online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=354 nokia ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=113&forum=13 lortab] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=362 free motorola ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=209 samsung ringtones] [http://wc1.worldcrossing.com/WebX/.1de609dd free alltel ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=222 sharp ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a28 cheap soma] [http://wc1.worldcrossing.com/WebX/.1de60a1a mtv ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=109&forum=13 cheap levitra] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=127&forum=13 cheap pharmacy online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=361 free real ringtones] [http://wc1.worldcrossing.com/WebX/.1de609df cheap ambien] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=98&forum=13 cheap diethylpropion] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=158&forum=13 cheap xanax] [http://news.engin.brown.edu/forums/thread-view.asp?tid=172 online lorazepam] [http://wc1.worldcrossing.com/WebX/.1de609ff real ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=220 free punk ringtones] [http://wc1.worldcrossing.com/WebX/.1de609dc albuterol online] [http://wc1.worldcrossing.com/WebX/.1de60a2e xanax online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=156 fioricet online] [http://wc1.worldcrossing.com/WebX/.1de60a10 didrex online] [http://wc1.worldcrossing.com/WebX/.1de60a35 free verizon ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=176 ultracet online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=356 tracfone ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=92&forum=13 clomid online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=344 ativan online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=155 buy xanax] [http://news.engin.brown.edu/forums/thread-view.asp?tid=178 buy nexium] [http://wc1.worldcrossing.com/WebX/.1de60a04 free sonyericsson ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=182 clomid online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=82&forum=13 adipex online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=343 cialis online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=170 cheap hydrocodone] [http://news.engin.brown.edu/forums/thread-view.asp?tid=169 cheap levitra] [http://wc1.worldcrossing.com/WebX/.1de609f3 midi ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=111&forum=13 order lisinopril] [http://news.engin.brown.edu/forums/thread-view.asp?tid=224 free wwe ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=153 phentermine online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=147&forum=13 tracfone ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=181 sildenafil online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=212 verizon ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=223 free midi ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=335 phentermine online] [http://wc1.worldcrossing.com/WebX/.1de60a00 rivotril online] [http://wc1.worldcrossing.com/WebX/.1de60a0a vicodin] [http://news.engin.brown.edu/forums/thread-view.asp?tid=187 celexa online] [http://wc1.worldcrossing.com/WebX/.1de609eb free funny ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=197 cheap flexeril] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=105&forum=13 hoodia online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=188 tenuate online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=180 prozac online] [http://wc1.worldcrossing.com/WebX/.1de60a05 free sprint ringtones] [http://wc1.worldcrossing.com/WebX/.1de609f9 order norco] [http://wc1.worldcrossing.com/WebX/.1de609f2 online meridia] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=145&forum=13 free sprint ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=96&forum=13 diazepam online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=338 fioricet online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=358 mp3 ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a21 paxil online] [http://wc1.worldcrossing.com/WebX/.1de60a31 buy zanaflex] [http://wc1.worldcrossing.com/WebX/.1de609de alprazolam] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=141&forum=13 soma online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=342 diazepam online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=157&forum=13 wwe ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=161&forum=13 but zoloft] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=112&forum=13 lorazepam online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=124&forum=13 norco online] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=355 free free ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=88&forum=13 cheap carisoprodol] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=360 free qwest ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=167 cheap clonazepam] [http://wc1.worldcrossing.com/WebX/.1de60a0e celexa online] [http://wc1.worldcrossing.com/WebX/.1de609e4 cheap clonazepam] [http://wc1.worldcrossing.com/WebX/.1de60a17 buy lipitor] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=123&forum=13 free nokia ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=184 cheap lisinopril] [http://wc1.worldcrossing.com/WebX/.1de60a24 cheap propecia] [http://wc1.worldcrossing.com/WebX/.1de609f8 nokia ringtones] [http://wc1.worldcrossing.com/WebX/.1de609fd free punk ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=154 buy carisoprodol] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=339 ultram online] [http://wc1.worldcrossing.com/WebX/.1de60a34 free sony ericsson ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=202 tracfone ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=199 zyban online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=198 cheap hoodia] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=332 cheap tramadol] [http://wc1.worldcrossing.com/WebX/.1de60a1d cingular ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=107&forum=13 jazz ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=219 free alltel ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=101&forum=13 cheap flexeril] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=359 free nextel ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a15 free kyocera ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=363 samsung ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=117&forum=13 free motorola ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=346 cheap meridia] [http://wc1.worldcrossing.com/WebX/.1de60a30 cheap xenical] [http://wc1.worldcrossing.com/WebX/.1de60a03 free sony ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=168 paxil online] [http://wc1.worldcrossing.com/WebX/.1de60a01 sagem ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=160 buy ativan] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=136&forum=13 cheap rivotril] [http://wc1.worldcrossing.com/WebX/.1de609fb cheap ortho] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=89&forum=13 celexa online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=139&forum=13 sharp ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=163 cheap adipex] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=125&forum=13 ortho online] [http://wc1.worldcrossing.com/WebX/.1de609ee cheap hydrocodone] [http://news.engin.brown.edu/forums/thread-view.asp?tid=177 propecia online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=91&forum=13 free cingular ringtones] [http://wc1.worldcrossing.com/WebX/.1de609f7 nextel ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=215 sagem ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=347 online adipex] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=132&forum=13 free punk ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=97&forum=13 buy didrex] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=144&forum=13 free sonyericsson ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=179 didrex online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=158 diazepam online] [http://wc1.worldcrossing.com/WebX/.1de60a25 samsung ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a26 sharp ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=162 meridia online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=217 free mono ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=152 cheap valium] [http://wc1.worldcrossing.com/WebX/.1de609ec buy hgh] [http://news.engin.brown.edu/forums/thread-view.asp?tid=205 nextel ringtones] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=357 funny ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=191 cheap lortab] [http://wc1.worldcrossing.com/WebX/.1de60a2b but ultracet] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=153&forum=13 buy viagra] [http://news.engin.brown.edu/forums/thread-view.asp?tid=183 albuterol] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=349 vicodin online] [http://wc1.worldcrossing.com/WebX/.1de60a18 free motorola ringtones] [http://wc1.worldcrossing.com/WebX/.1de609f0 cheap lorazepam] [http://wc1.worldcrossing.com/WebX/.1de60a12 free ericsson ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a19 free mp3 ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=216 free sonyericsson ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=161 viagra online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=95&forum=13 cheap cyclobenzaprine] [http://news.engin.brown.edu/forums/thread-view.asp?tid=192 vigrx] [http://wc1.worldcrossing.com/WebX/.1de60a0d wwe ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=185 cheap zoloft] [http://wc1.worldcrossing.com/WebX/.1de609e3 cheap clomid] [http://wc1.worldcrossing.com/WebX/.1de60a13 cheap fioricet] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=138&forum=13 free samsung ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=83&forum=13 albuterol online] [http://wc1.worldcrossing.com/WebX/.1de60a29 tramadol online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=173 order xenical] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=350 alprazolam] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=93&forum=13 clonazepam online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=204 free mp3 ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=164 order norco] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=337 online xanax] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=119&forum=13 mtv ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=206 free qwest ringtones] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=151&forum=13 valium] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=140&forum=13 sildenafil online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=162&forum=13 zyban online] [http://news.engin.brown.edu/forums/thread-view.asp?tid=166 cheap alprazolam] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=353 levitra] [http://www.psfc.mit.edu/~jinseok/bbse/view.php?id=presentations&no=333 cheap soma] [http://news.engin.brown.edu/forums/thread-view.asp?tid=189 ortho online] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=159&forum=13 cheap xenical] [http://wc1.worldcrossing.com/WebX/.1de60a36 cheap zyban] [http://wc1.worldcrossing.com/WebX/.1de60a23 free polyphonic ringtones] [http://news.engin.brown.edu/forums/thread-view.asp?tid=208 free motorola ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a1f cheap lisinopril] [http://people.msoe.edu/~millerni/forums.php?show=topic&id=137&forum=13 sagem ringtones] [http://wc1.worldcrossing.com/WebX/.1de60a1b music ringtones] [http://wc1.worldcrossing.com/WebX/.1de609e0 cheap ativan] Below is a simple program that shows how to open a connection to a serial device and then interact with it (receiving data and sending data). One thing to note is that the package gnu.io is used instead of javax.comm, though other than the change in package name the API follows the [http://java.sun.com/products/javacomm/ Java Communication API]. To find the names of the available ports, see the [[Discovering comm ports]] example.	+	Below is a simple program that shows how to open a connection to a serial device and then interact with it (receiving data and sending data). One thing to note is that the package gnu.io is used instead of javax.comm, though other than the change in package name the API follows the [http://java.sun.com/products/javacomm/ Java Communication API]. To find the names of the available ports, see the [[Discovering comm ports]] example.

	<pre>		<pre>

Two way communcation with the serial port

From Rxtx

Latest revision as of 22:16, 1 February 2008

Views

Personal tools

RXTX

Original navigation

Search

Toolbox