1. Arduino
1.1. Rancangan
1.2. Code
int potPin = A0;
int potValue;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
potValue = analogRead(potPin);
Serial.print(potValue);
Serial.print(",");
delay(15);
}
2. Java
2.1. Konfigurasi RXTX
2.1.1. Download library RXTX dari websitenya : link download
2.1.2. Extract file zip yang telah didownload
2.1.3. Copy file rxtxSerial.dll dan rxtxParallel.dll ke folder C:\Program Files\java\jre7\bin
2.1.4. Copy file RXTXcomm.jar ke direktori C:\Program Files\java\jre7\lib\ext
2.2. Code
package com.sad301.exc;
import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import gnu.io.SerialPortEvent;
import gnu.io.SerialPortEventListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import javax.swing.ComboBoxModel;
import javax.swing.GroupLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToggleButton;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.event.ListDataListener;
import javax.swing.text.DefaultCaret;
public class SerialExc extends JFrame implements SerialPortEventListener {
/**
*
*/
private boolean isOpened;
private byte[] buffer = new byte[1024];
private static final long serialVersionUID = 1L;
private InputStream in;
private JComboBox<String> cbCommPortId;
private JTextArea taData;
private JToggleButton bConnect;
private SerialPort serialPort;
public static void main(String[] args) throws Exception {
String laf = UIManager.getSystemLookAndFeelClassName();
UIManager.setLookAndFeel(laf);
SerialExc sx = new SerialExc();
sx.setVisible(true);
}
public SerialExc() {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createGUI();
}
});
}
@SuppressWarnings("unchecked")
private void createGUI() {
Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers();
CBModelCommPortId model = new CBModelCommPortId(portEnum);
JLabel lPort = new JLabel("Pilih Port :");
cbCommPortId = new JComboBox<String>(model);
cbCommPortId.setSelectedIndex(0);
bConnect = new JToggleButton("Connect");
bConnect.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent arg0) {
int stateChange = arg0.getStateChange();
switch(stateChange) {
case ItemEvent.SELECTED :
startConnection();
break;
case ItemEvent.DESELECTED :
stopConnection();
break;
}
}
});
taData = new JTextArea();
DefaultCaret caret = (DefaultCaret)taData.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
JScrollPane spData = new JScrollPane(taData);
GroupLayout l = new GroupLayout(getContentPane());
l.setAutoCreateGaps(true);
l.setAutoCreateContainerGaps(true);
l.setHorizontalGroup(l.createSequentialGroup()
.addGroup(l.createParallelGroup()
.addGroup(l.createSequentialGroup()
.addComponent(lPort)
.addComponent(cbCommPortId)
.addComponent(bConnect)
)
.addComponent(spData)
)
);
l.setVerticalGroup(l.createSequentialGroup()
.addGroup(l.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(lPort)
.addComponent(cbCommPortId)
.addComponent(bConnect)
)
.addComponent(spData)
);
setTitle("SerialExc");
setSize(200, 200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
getContentPane().setLayout(l);
}
private void startConnection() {
try {
String portId = (String)cbCommPortId.getSelectedItem();
CommPortIdentifier commPortId = CommPortIdentifier.getPortIdentifier(portId);
CommPort commPort = commPortId.open(getClass().getName(), 2000);
if(commPort instanceof SerialPort) {
serialPort = (SerialPort)commPort;
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
isOpened = true;
in = serialPort.getInputStream();
serialPort.addEventListener(this);
serialPort.notifyOnDataAvailable(true);
}
}
catch(Exception exc) {
taData.append(exc.toString()+"\n");
bConnect.setSelected(false);
}
}
private void stopConnection() {
if(isOpened) {
serialPort.close();
serialPort.removeEventListener();
}
}
@Override
public void serialEvent(SerialPortEvent arg0) {
// TODO Auto-generated method stub
int data;
try {
int len = 0;
while((data=in.read()) > -1) {
if(data==',') {
break;
}
buffer[len++] = (byte)data;
}
taData.append(new String(buffer, 0, len) + "\n");
}
catch(IOException exc) {
taData.append(exc.toString() + "\n");
}
}
}
class CBModelCommPortId implements ComboBoxModel<String> {
private String selectedItem;
private List<String> items;
public CBModelCommPortId(Enumeration<CommPortIdentifier> arg0) {
this.items = getCommPortIdNames(arg0);
}
@Override
public void addListDataListener(ListDataListener l) {
// TODO Auto-generated method stub
}
@Override
public String getElementAt(int index) {
// TODO Auto-generated method stub
return items.get(index);
}
@Override
public int getSize() {
// TODO Auto-generated method stub
return items.size();
}
@Override
public void removeListDataListener(ListDataListener l) {
// TODO Auto-generated method stub
}
@Override
public Object getSelectedItem() {
// TODO Auto-generated method stub
return (String)this.selectedItem;
}
@Override
public void setSelectedItem(Object arg0) {
// TODO Auto-generated method stub
this.selectedItem = (String)arg0;
}
private List<String> getCommPortIdNames(Enumeration<CommPortIdentifier> arg0) {
List<String> temp = new ArrayList<>();
while(arg0.hasMoreElements()) {
CommPortIdentifier commPortId = arg0.nextElement();
if(commPortId.getPortType()==CommPortIdentifier.PORT_SERIAL) {
temp.add(commPortId.getName());
}
}
return temp;
}
}
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