Package purejavacomm.testsuite

Source Code of purejavacomm.testsuite.PureJavaCommDemo

/*
* Copyright (c) 2011, Kustaa Nyholm / SpareTimeLabs
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
* Neither the name of the Kustaa Nyholm or SpareTimeLabs nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/

package purejavacomm.testsuite;

import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Random;

import purejavacomm.*;

public class PureJavaCommDemo {

  public static void main(String[] args) {
    try {
      System.out.println("PureJavaCommDemo");
      CommPortIdentifier portid = null;
      Enumeration e = CommPortIdentifier.getPortIdentifiers();
      while (e.hasMoreElements()) {
        portid = (CommPortIdentifier) e.nextElement();
        System.out.println("found " + portid.getName());
      }
      if (portid != null) {
        System.out.println("use " + portid.getName());
        SerialPort port = (SerialPort) portid.open("PureJavaCommDemo", 1000);
        port.notifyOnDataAvailable(true);
        port.notifyOnOutputEmpty(true);
        port.setFlowControlMode(SerialPort.FLOWCONTROL_XONXOFF_IN + SerialPort.FLOWCONTROL_XONXOFF_OUT);
        final OutputStream outs = port.getOutputStream();
        final InputStream ins = port.getInputStream();
        final boolean[] stop = { false };
        port.addEventListener(new SerialPortEventListener() {
          byte[] linebuf = new byte[10000];
          int inp = 0;
          int okcnt = 0;
          int errcnt = 0;
          Random rnd = new Random();

          public void serialEvent(SerialPortEvent event) {
            try {
              if (event.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
                int n = ins.available();
                byte[] buffer = new byte[n];
                n = ins.read(buffer, 0, n);
                for (int i = 0; i < n; ++i) {
                  byte b = buffer[i];
                  linebuf[inp++] = b;
                  if (b == '\n') {
                    //System.err.print("Received: " + new String(linebuf, 0, inp));
                    int s = 0;
                    int j;
                    for (j = 0; j < inp - 2; j++)
                      s += linebuf[j];
                    byte cb = (byte) (32 + (s & 63));
                    okcnt++;
                    if (cb != linebuf[j]) {
                      System.out.println("check sum failure");
                      errcnt++;
                    }
                    System.out.println("msg "+inp+" ok " + okcnt + " err " + errcnt);
                    inp = 0;
                  }
                }
              }
              if (event.getEventType() == SerialPortEvent.OUTPUT_BUFFER_EMPTY) {
                int n = 4+ (rnd.nextInt() & 63);
                byte[] buffer = new byte[n + 2];
                //System.err.print("Sending: " + new String(buffer));
                int s = 0;
                int i;
                for (i = 0; i < n; i++) {
                  byte b = (byte) (32 + (rnd.nextInt() & 63));
                  buffer[i] = b;
                  s += b;
                }
                buffer[i++] = (byte) (32 + (s & 63));
                buffer[i++] = '\n';
                outs.write(buffer, 0, buffer.length);
              }

            } catch (Exception e) {
              e.printStackTrace();
            }
          }
        });
        while (!stop[0]) {
          try {
            Thread.sleep(100);
          } catch (Exception ex) {
            ex.printStackTrace();
          }
        }
      }

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

  }
}
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