Having some issues with this piece of code I've designed to handle input from a Wiring Board:

// Luke George
// 3rd Year Music Informatics Bsc
// January - March 2007

//Import necessary packages
import processing.serial.*;

public class SerialIn extends PApplet{

 //Declare variables
 float[] data;
 Serial wiringPort;
 String wiringIn = null;
 

 public SerialIn() {
   
   //Create new float array for storing input values
   data = new float[3];
   
   //Print Connections to terminal
   println(Serial.list()[0]);
   
   //Create a new Serial connection to retreive data from
   //the board through
   wiringPort = new Serial(this, Serial.list()[0], 9600);

   //clear the buffer ready for data
   wiringPort.clear();
   wiringIn = wiringPort.readString();
   wiringIn = null;
   readData();
 }
 
 //Looping method which takes data from serial
 //port and places it into the data array.
 void readData(){
   while(wiringPort.available() > 0){
     wiringIn = wiringPort.readString();
     String[] list = new String[6];
     list = split(wiringIn);
     for(int i = 0; i < list.length; i = i + 1){

       if(list[i].equals("sens0:") && i <(list.length-1)){
         float value = float(list[i+1]);
         data[0] = value;
         delay(10);
       }

       if(list[i].equals("sens1:") && i <(list.length-1)){
         float value = float(list[i+1]);
         data[1] = value;
         delay(10);
       }

       if(list[i].equals("sens2:") && i <(list.length-1)){
         float value = float(list[i+1]);
         data[2] = value;
         delay(10);
       }
       
     }
   }
 }
 
 //Retrieve values from data Array
 float[] getSensorData(){
   return data;
 }

}

This runs as an inner class to another Tab called Manager which creates an instance of this class at runtime.

I'm basically getting this at runtime:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7

RXTX Warning:  Removing stale lock file. /var/lock/LCK..ttyUSB0

/dev/ttyUSB0

java.lang.NullPointerException

at processing.core.PApplet.registerNoArgs(PApplet.java:758)

at processing.core.PApplet.registerDispose(PApplet.java:749)

at processing.serial.Serial.<init>(Serial.java:156)

at processing.serial.Serial.<init>(Serial.java:102)

at Temporary_9905_9086$SerialIn.<init>(Temporary_9905_9086.java:217)

java.lang.RuntimeException: Could not register dispose + () for processing.serial.Serial@1d9fd51

at processing.core.PApplet.die(PApplet.java:2336)

at processing.core.PApplet.die(PApplet.java:2354)

at processing.core.PApplet.registerNoArgs(PApplet.java:761)

at processing.core.PApplet.registerDispose(PApplet.java:749)

at processing.serial.Serial.<init>(Serial.java:156)

at processing.serial.Serial.<init>(Serial.java:102)

at Temporary_9905_9086$SerialIn.<init>(Temporary_9905_9086.java:217)

at Temporary_9905_9086.setup(Temporary_9905_9086.java:16)

at processing.core.PApplet.handleDisplay(PApplet.java:1281)

at processing.core.PGraphics.requestDisplay(PGraphics.java:564)

at processing.core.PApplet.run(PApplet.java:1450)

at java.lang.Thread.run(Unknown Source)


Its falling over at:

wiringPort = new Serial(this, Serial.list()[0], 9600);


Anyone offer a solution please? =)

Ok yeah sorry that was pretty n00bish.  I've done some more reading; my ultimate goal is to get the part of my program that collects data from the serial port to run in a separate thread, to that end i've created the following.  Is there any chance someone can help me out a little here? I think my main problem is which PApplet i should be referencing in creating the Serial Object 'wiringPort'...........

Apologies if this is elementary.

Code as follows:

// Luke George
// 3rd Year Music Informatics Bsc
// January - March 2007

//Import necessary packages
import processing.serial.*;
import processing.core.*;

public class SerialIn {

 //Declare variables
 float[] data;
 Serial wiringPort;
 String wiringIn = null;
 PApplet parent;
 

 public SerialIn() {
   
   //Create new float array for storing input values
   data = new float[3];
   
   parent = new PApplet();
   
   System.out.println(Serial.list()[0]);
   
   //Create a new Serial connection to retreive data from
   //the board through
   wiringPort = new Serial(parent, Serial.list()[0], 9600);

   //clear the buffer ready for data
   wiringPort.clear();
   wiringIn = wiringPort.readString();
   wiringIn = null;
   readData();
 }

 //Looping method which takes data from serial
 //port and places it into the data array.
 void readData(){
   while(wiringPort.available() > 0){
     wiringIn = wiringPort.readString();
     String[] list = new String[6];
     list = wiringIn.split("");
     for(int i = 0; i < list.length; i = i + 1){

       if(list[i].equals("sens0:") && i < (list.length - 1)){
         float value = (float) new Integer(Integer.parseInt(list[i+1])).floatValue();
         data[0] = value;
         //delay(10);
       }

       if(list[i].equals("sens1:") && i < (list.length - 1)){
         float value = (float) new Integer(Integer.parseInt(list[i+1])).floatValue();
         data[1] = value;
         //delay(10);
       }

       if(list[i].equals("sens2:") && i < (list.length - 1)){
         float value = (float) new Integer(Integer.parseInt(list[i+1])).floatValue();
         data[2] = value;
         //delay(10);
       }
       
     }
   }
 }
 
 //Retrieve values from data Array
 float[] getSensorData(){
   return data;
 }

}



Error upon execution:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path

at java.lang.ClassLoader.loadLibrary(Unknown Source)

at java.lang.Runtime.loadLibrary0(Unknown Source)

at java.lang.System.loadLibrary(Unknown Source)

at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)

java.lang.RuntimeException: Error inside Serial.ports()

at processing.serial.Serial.errorMessage(Serial.java:575)

at processing.serial.Serial.list(Serial.java:556)

at SerialIn.<init>(SerialIn.java:25)

at Temporary_5142_9826.setup(Temporary_5142_9826.java:17)

at processing.core.PApplet.handleDisplay(PApplet.java:1281)

at processing.core.PGraphics.requestDisplay(PGraphics.java:564)

at processing.core.PApplet.run(PApplet.java:1450)

at java.lang.Thread.run(Unknown Source)


Thanks in advance!