Java ile seri port işlemleri için yazılmış bir kütüphane mevcut ilk olarak buradaki RXTXcomm-2.2pre2 dosyadan sisteminize uygun klasör içerisindeki dosyayı işletim sisteminizin ana dizinine atınız (örn. windows için C:\windows).
Buradaki örnek ile seri port üzerinden gelen verileri okumaya yarayan bir uygulama.
Kaynak kodlar için SerialPortReader
package serialportreader;
import gnu.io.SerialPortEventListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import gnu.io.SerialPortEvent;
import gnu.io.SerialPortEventListener;
import java.util.ArrayList;
import java.util.Enumeration;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
/**
* @author meSutPiskin
*/
public class UI_Main extends javax.swing.JFrame implements SerialPortEventListener {
/**
* @param aComPortName the comPortName to set
*/
public static void setComPortName(String aComPortName) {
comPortName = aComPortName;
}
String inputLine;
String readArray = new String;
SerialPort serialPort;
int i = 0;
private static String comPortName = "COM4";
public static String getComPortName() {
return comPortName;
}
private static final String PORT_NAMES = {getComPortName(),};
private BufferedReader input;
private static OutputStream output;
private static int TIME_OUT = 2000;
private static int DATA_RATE = 9600;
public void initialize() {
System.setProperty("gnu.io.rxtx.SerialPorts", getComPortName());
CommPortIdentifier portId = null;
Enumeration portEnum = CommPortIdentifier.getPortIdentifiers();
while (portEnum.hasMoreElements()) {
CommPortIdentifier currPortId = (CommPortIdentifier) portEnum.nextElement();
for (String portName : PORT_NAMES) {
if (currPortId.getName().equals(portName)) {
portId = currPortId;
break;
}
}
}
if (portId == null) {
JOptionPane.showMessageDialog(null," PORTUNA BAĞLI CİHAZ YOK!","HATA",JOptionPane.ERROR_MESSAGE);
System.out.println("PORTA BAĞLI CİHAZ YOK!");
return;
}
try {
serialPort = (SerialPort) portId.open(this.getClass().getName(), TIME_OUT);
serialPort.setSerialPortParams(DATA_RATE, SerialPort.DATABITS_8, SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
input = new BufferedReader(new InputStreamReader(serialPort.getInputStream()));
output = serialPort.getOutputStream();
serialPort.addEventListener(this);
serialPort.notifyOnDataAvailable(true);
} catch (Exception e) {
System.err.println(e.toString());
}
}
public synchronized void close() {
if (serialPort != null) {
serialPort.removeEventListener();
serialPort.close();
}
}
@Override
public synchronized void serialEvent(SerialPortEvent oEvent) {
if (oEvent.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
try {
if (input.ready() == true) {
inputLine = input.readLine();
System.out.println("OKUNAN VERİ:" + inputLine);
JOptionPane.showMessageDialog(null,inputLine,"OKUNAN VERİ",JOptionPane.INFORMATION_MESSAGE);
} else {
System.out.println("VERİ OKUNAMIYOR!");
JOptionPane.showMessageDialog(null,inputLine,"VERİ OKUNAMIYOR!",JOptionPane.INFORMATION_MESSAGE);
}
} catch (Exception e) {
System.err.println(e.toString());
}
}
}
public UI_Main() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
txtBoundRate = new javax.swing.JTextField();
txtComPortName = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
btnConnect = new javax.swing.JButton();
txtTimeOut = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
txtReadData = new java.awt.TextArea();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("SERİ PORT VERİ OKU");
setResizable(false);
setType(java.awt.Window.Type.UTILITY);
txtBoundRate.setText("9600");
txtComPortName.setText("COM1");
jLabel1.setText("PORT İSMİ");
jLabel2.setText("BOUND RATE");
btnConnect.setText("BAĞLAN");
btnConnect.setCursor(new java.awt.Cursor(java.awt.Cursor.HAND_CURSOR));
btnConnect.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnConnectActionPerformed(evt);
}
});
txtTimeOut.setText("2000");
jLabel3.setText("TIME OUT");
txtReadData.setMinimumSize(new java.awt.Dimension(20, 80));
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(txtComPortName, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 136, Short.MAX_VALUE)
.addComponent(txtBoundRate, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(txtTimeOut, javax.swing.GroupLayout.Alignment.LEADING))
.addComponent(btnConnect, javax.swing.GroupLayout.PREFERRED_SIZE, 147, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(txtReadData, javax.swing.GroupLayout.DEFAULT_SIZE, 223, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(txtReadData, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(5, 5, 5)
.addComponent(txtComPortName, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(21, 21, 21)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(txtBoundRate, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(28, 28, 28)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(txtTimeOut, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 73, Short.MAX_VALUE)
.addComponent(btnConnect, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap())
);
pack();
}// </editor-fold>
private void btnConnectActionPerformed(java.awt.event.ActionEvent evt) {
setComPortName(txtComPortName.getText());
DATA_RATE = Integer.parseInt(txtBoundRate.getText());
TIME_OUT = Integer.parseInt(txtTimeOut.getText());
btnConnect.setText("TEKRAR BAĞLAN");
UI_Main main = new UI_Main();
main.initialize();
Thread t = new Thread() {
public void run() {
try {
Thread.sleep(1000000);
} catch (InterruptedException ie) {
}
}
};
t.start();
txtReadData.setText(txtComPortName.getText()+" PORT AÇILDI\n");
txtReadData.setText(txtReadData.getText() + "Veri Bekleniyor...\n");
}
public static void main(String args) {
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(UI_Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(UI_Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(UI_Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(UI_Main.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new UI_Main().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton btnConnect;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField txtBoundRate;
private javax.swing.JTextField txtComPortName;
private java.awt.TextArea txtReadData;
private javax.swing.JTextField txtTimeOut;
// End of variables declaration
}
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