Dize ile Onaltılı ve Dize String dönüştürmek nasıl?

Question

Java'da seri bağlantı noktasına veri göndermek ve almak için basit bir program yaptım. Geri döngü testi ile seri port cihazı bağladım (Rx - Tx). iyi çalışıyor. ancak hex veriyi seri bağlantı noktasına gönderemiyorum ve seri portu alıyorum. Cihazımda FT232BL çip kullanılıyor. Seri port cihazına hex veri göndermek ve almak için gerekli herhangi bir dll veya başka bir kütüphane var. kodum aşağıda.

Hex

enter code here 
package x.rayimagecapture; 

import gnu.io.CommPort; 
import gnu.io.CommPortIdentifier; 
import gnu.io.SerialPort; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.Timer; 

public class TwoWaySerialComm extends JPanel implements ActionListener { 

    OutputStream out; 
    private javax.swing.JButton btn; 
    private javax.swing.JScrollPane jScrollPane1; 
    public static javax.swing.JLabel jLabel1; 
    public static javax.swing.JTextField textField; 
    public static boolean flag = false; 
    public static int count = 50; 
// TimerWindow tmr=new TimerWindow(); 
    public static Timer tmr = new Timer(1000, new ActionListener() { 
     public void actionPerformed(ActionEvent evt) { 
         count++; 
      jLabel1.setText("" + count); 
     } 
    }); 

    public TwoWaySerialComm() { 
     super(); 
     textField = new javax.swing.JTextField(); 
     btn = new javax.swing.JButton(); 
     jScrollPane1 = new javax.swing.JScrollPane(); 
     jLabel1 = new javax.swing.JLabel(); 
     textField.setText(""); // NOI18N 
//  tmr.setDelay(0); 

     btn.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N 
     btn.setText("Send"); // NOI18N 
     btn.addActionListener(new java.awt.event.ActionListener() { 
      public void actionPerformed(java.awt.event.ActionEvent evt) { 
       serialwrite(); 
      } 
     }); 

//  textArea.setColumns(20); 
//  textArea.setRows(20); 
//  textArea.setTabSize(0); 
     jScrollPane1.setViewportView(jLabel1); 

     javax.swing.GroupLayout panelLayout = new javax.swing.GroupLayout(this); 
     this.setLayout(panelLayout); 
     panelLayout.setHorizontalGroup(
       panelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGroup(panelLayout.createSequentialGroup() 
       .addComponent(textField, javax.swing.GroupLayout.PREFERRED_SIZE, 300, javax.swing.GroupLayout.PREFERRED_SIZE) 
       .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) 
       .addComponent(btn, javax.swing.GroupLayout.DEFAULT_SIZE, 84, Short.MAX_VALUE) 
       .addContainerGap()) 
       .addComponent(jScrollPane1)); 
     panelLayout.setVerticalGroup(
       panelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
       .addGroup(panelLayout.createSequentialGroup() 
       .addGroup(panelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) 
       .addComponent(textField, javax.swing.GroupLayout.PREFERRED_SIZE, 47, javax.swing.GroupLayout.PREFERRED_SIZE) 
       .addComponent(btn, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)) 
       .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) 
       .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 218, Short.MAX_VALUE))); 
    } 

    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(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); 
       serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_NONE); 
       InputStream in = serialPort.getInputStream(); 
       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."); 
      } 
     } 
    } 

    @Override 
    public void actionPerformed(ActionEvent e) { 
     serialwrite(); 
    } 

    public void serialwrite() { 
     try { 
      this.out.write(textField.getText().toString().getBytes()); 
      count = 00; 
//   tmr.start(); 
      tmr.start(); 
      this.out.flush(); 
     } catch (IOException ex) { 
      Logger.getLogger(TwoWaySerialComm.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 

    /** 
    * 
    */ 
    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) { 
//     textArea.append(" " + new String(buffer, 0, len)); 
        String str = new String(buffer, 0, len); 
        System.out.print(str); 
        if (!str.isEmpty()) { 
//      tmr.stop(); 
        } 
       } 
      } 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) { 
     TwoWaySerialComm tws = new TwoWaySerialComm(); 
     JFrame frame = new JFrame(); 
     frame.setSize(400, 300); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.add(tws); 
     try { 
      tws.connect("COM11"); 
     } catch (Exception ex) { 
      Logger.getLogger(TwoWaySerialComm.class.getName()).log(Level.SEVERE, null, ex); 
     } 
     frame.setVisible(true); 
    } 
} 

Answer 1

String:

Integer.decode(hexString); 

hex String için: dize onaltılı olarak

Integer.toHexString(integer); 

Answer 2

için,

Integer.decode("0x4d2"); // output is 1234 

,

Integer.toHexString(1234); // output is 4d2