how to fetch meaningful
- by user1298017
Hi Every body,
I have connected my device to serial port. I am
using Javax.comm API to fetch the data from my device.
On tapping of card i am reading data as below:
newData = inputStream.read();
and able to fetch data :
0 128 161 132 132 132 132 132 132 132 101 65 2 226 99 98 132 132 132
132 132 132 132 132 131 134 164 132 132 132 165 134 132 196 230 167
132 132 132 132 132 132 132 197 196 132 133 132 132 164 197 132 132
198 103 255
How can deciper meaning ful text from it.
My code is as below:
import java.io.*;
import java.util.*;
import javax.comm.*;
import javax.comm.SerialPort;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
public class NFCReader3 implements Runnable, SerialPortEventListener {
static CommPortIdentifier portId;
static Enumeration portList;
InputStream inputStream;
SerialPort serialPort;
Thread readThread;
int i=0;
public static void main(String[] args) {
boolean portFound = false;
String defaultPort = "COM9";
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
if (portId.getName().equals(defaultPort)) {
System.out.println("Found port: "+defaultPort);
portFound = true;
NFCReader3 reader = new NFCReader3();
}
}
}
if (!portFound) {
System.out.println("port " + defaultPort + " not found.");
}
}
public NFCReader3() {
try {
serialPort = (SerialPort) portId.open("SimpleReadApp2S", 2000);
} catch (PortInUseException e) {}
try {
inputStream = serialPort.getInputStream();
} catch (IOException e) {}
try {
serialPort.addEventListener(this);
} catch (TooManyListenersException e) {}
serialPort.notifyOnDataAvailable(true);
try {
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e) {}
readThread = new Thread(this);
readThread.start();
}
public void run() {
try {
Thread.sleep(20000);
} catch (InterruptedException e) {}
}
public void serialEvent(SerialPortEvent event) {
StringBuffer inputBuffer = new StringBuffer();
int newData = 0;
switch (event.getEventType()) {
case SerialPortEvent.BI:
case SerialPortEvent.OE:
case SerialPortEvent.FE:
case SerialPortEvent.PE:
case SerialPortEvent.CD:
case SerialPortEvent.CTS:
case SerialPortEvent.DSR:
case SerialPortEvent.RI:
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE:
while (newData != -1) {
try {
newData = inputStream.read();
System.out.print(newData);
System.out.print(" ");
if (newData == -1) {
break;
}
if ('\r' == (char)newData) {
inputBuffer.append('\n');
} else {
inputBuffer.append((char)newData);
}
} catch (IOException ex) {
System.out.println("exception");
System.err.println(ex);
return;
}
}
break;
