Encoding set caratteri dalla seriale [cp1252 to unicode]

package com.marktech.seriale;

import com.fazecast.jSerialComm.*;
import com.sun.xml.internal.stream.writers.UTF8OutputStreamWriter;

import java.io.*;
import java.nio.CharBuffer;

public class Main {

    public static void main(String[] args) {

        // mi prendo la porta
        SerialPort comPort = SerialPort.getCommPorts()[0];
        //apro la comunicazione con un DCE3 (roba vecchia)        
        comPort.setBaudRate(600);
        comPort.setParity(7);
        comPort.openPort();        
        
        // do un occhio se effettivamente è la porta (unica) che ho scelto per la connessione
        System.out.println(comPort.getDescriptivePortName());        
        comPort.setComPortTimeouts(SerialPort.TIMEOUT_READ_SEMI_BLOCKING, 100, 0);
        
        InputStream in = comPort.getInputStream();
        InputStreamReader inputStreamReader;

        OutputStream out = comPort.getOutputStream();
        try
        {
            System.out.println(comPort.isOpen());

            // comando per ottenere l'help della macchina
            String datiDaInviare = new String("at&h");


            out.write(datiDaInviare.getBytes());
            char invio = 13; // carattere invio
            out.write(invio);


            try {
                inputStreamReader = new InputStreamReader(in);
                int data = inputStreamReader.read();
                System.out.println(inputStreamReader.getEncoding());

                while(data != -1) {
                    System.out.print((char) data);
                    data = inputStreamReader.read();
                }
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                //
            }



            in.close();
        } catch (Exception e) { e.printStackTrace(); }


        comPort.closePort();


    }
}

"C:\Program Files\Java\jdk1.8.0_60\bin\java" -Didea.launcher.port=7532 "-Didea.launcher.bin.path=C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 14.1.5\bin" -Dfile.encoding=windows-1252 -classpath "C:\Program Files\Java\jdk1.8.0_60\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\rt.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\access-bridge.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_60\jre\lib\ext\zipfs.jar;C:\Users\11617466\Google Drive\Programmazione Java\ProgrammazioneMarcoAlberto\Seriale_02\out\production\Seriale_02;C:\Users\11617466\Google Drive\Programmazione Java\ProgrammazioneMarcoAlberto\Seriale_02\Dipendenze\jSerialComm-1.3.11.jar;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 14.1.5\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain com.marktech.seriale.Main
Prolific USB-to-Serial Comm Port (COM3)
true
Cp1252
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c¥©j-K©j-K©j-K©j-K©j-KœŠWÒ­S¸©j-K©j-K©j-K©j-K©j-K¥L?ájava.io.IOException: Underlying input stream returned zero bytes
	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:288)
	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
	at sun.nio.cs.StreamDecoder.read0(StreamDecoder.java:127)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:112)
	at java.io.InputStreamReader.read(InputStreamReader.java:168)
	at com.marktech.seriale.Main.main(Main.java:48)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

Process finished with exit code 0