android: AndrOBD library vendored (no submodule, no git link)
This commit is contained in:
@@ -0,0 +1,723 @@
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/*
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* (C) Copyright 2015 by fr3ts0n <erwin.scheuch-heilig@gmx.at>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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package com.fr3ts0n.prot.gui;
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import com.fr3ts0n.prot.ProtUtils;
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import com.fr3ts0n.prot.SerialExt;
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import com.fr3ts0n.prot.TelegramWriter;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.beans.PropertyChangeEvent;
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import java.io.IOException;
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import java.util.Vector;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import javax.swing.Timer;
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/**
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* Communication handler for KL-Adaptor
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*
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* @author erwin
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*/
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public class KLHandler extends SerialHandler
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implements TelegramWriter
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{
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/**
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* Status of package transmission / reception - to determine if we are
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* processing data, or complements
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*/
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public enum PacketStatus
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{
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ECHO,
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COMPLEMENT,
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DATA,
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}
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// baud rates supported by this adapter
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private final int[] baudRates =
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{
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10400, 9600, 4800, 2400
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};
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// synch char
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private static final char SYNC_CHAR = 0x55;
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// current packet status
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private PacketStatus pktStat = PacketStatus.COMPLEMENT;
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// telegram block counter
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private char blockCounter = 0;
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/* current address in use */
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private int currAddress = 0; // (see ecuadr.csv)
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/** current baud rate */
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private int currBaudRate = 0;
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// last byte sent;
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private char lastTxChar = 0;
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/** Queue of telegrams to be sent */
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private final Vector<char[]> txTelegramQueue = new Vector<char[]>();
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/** current telegram to be sent */
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private char[] currTxTgm = {};
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/** current position of byte to be sent from within currTxTgm */
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private int currTxCharPos = 0;
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/**
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* Protocol timing parameters
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*/
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/** time of last reception */
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private long lastRxTime = 0;
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/** number of bits to pause (parameter fo calculation of interByteTime) */
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private static final int numBitsPause = 0;
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/** time [nanoseconds] to wait for sending next byte */
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private long interByteTime = 0; // [ns]
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/** time [ms] to detect communication timeout */
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private final int commTimeoutTime = 2000; // [ms]
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/** Timer to detect communication timeout */
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private Timer commTimer;
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/** Handler for communication Timeout */
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private final ActionListener commTimeoutHandler = new ActionListener()
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{
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@Override
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public void actionPerformed(ActionEvent arg0)
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{
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log.warning("CommTimeout");
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close();
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setProtStat(ProtStatus.TIMEOUT);
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}
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};
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/**
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* Default constructor
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*/
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public KLHandler()
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{
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// set the logger object
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log = Logger.getLogger("com.fr3ts0n.prot.kl");
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commTimer = new Timer(commTimeoutTime, commTimeoutHandler);
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commTimer.setInitialDelay(commTimeoutTime);
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commTimer.stop();
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}
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/**
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* construct with connecting to device
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*
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* @param device device to connect
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*/
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public KLHandler(String device)
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{
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try
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{
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setDeviceName(device);
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} catch (Exception ex)
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{
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log.log(Level.SEVERE,"",ex);
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}
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commTimer = new Timer(commTimeoutTime, commTimeoutHandler);
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commTimer.setInitialDelay(commTimeoutTime);
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commTimer.stop();
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}
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/**
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* @return the currBaudRate
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*/
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// current baud rate in use
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private int getCurrBaudRate()
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{
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return currBaudRate;
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}
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/**
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* @param currBaudRate the currBaudRate to set
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*/
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private void setCurrBaudRate(int currBaudRate)
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{
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firePropertyChange(new PropertyChangeEvent(this, "baud", this.currBaudRate, currBaudRate));
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this.currBaudRate = currBaudRate;
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}
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/**
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* @return the currAddress
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*/
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private int getCurrAddress()
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{
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return currAddress;
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}
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/**
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* @param currAddress the currAddress to set
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*/
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private void setCurrAddress(int currAddress)
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{
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this.currAddress = currAddress;
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}
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/**
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* close communication port
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*/
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@Override
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public void close()
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{
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txTelegramQueue.clear();
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if (commTimer != null)
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{
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commTimer.stop();
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}
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super.close();
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// set shutdown status
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setProtStat(ProtStatus.OFFLINE);
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}
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/**
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* add new listener for communication timeout
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*
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* @param listener new timeout listener
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*/
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public void addTimeoutListener(ActionListener listener)
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{
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commTimer.addActionListener(listener);
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}
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/**
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* set port speed to specified baud rate
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*
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* @param newBaudRate new baud rate to be set
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*/
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private void setCustomBaudRate(int newBaudRate)
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{
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try
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{
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SerialExt.setCustomBaudrate(newBaudRate);
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} catch (Exception e)
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{
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log.log(Level.SEVERE,"Set custom baudrate", e);
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}
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// show baudrate setting as debug output
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try
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{
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log.fine(String.format("Baudrate:%d/%d",
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SerialExt.getCustomBaudrate(),
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newBaudRate));
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} catch (Exception e)
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{
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log.log(Level.SEVERE,null, e);
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}
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// calculate new interByteTime (1M ns *numBits / bps)
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interByteTime = 1000000000 * numBitsPause / newBaudRate;
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}
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/**
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* send a single bit with 5 baud bit width
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*
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* @param bitValue
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*/
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private void sendBit5Baud(boolean bitValue)
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throws IOException
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{
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// set line status
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SerialExt.setBreak(bitValue ? 0 : 1);
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// RTS line follows inverse data bit ...
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// device.setRTS(!bitValue);
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// and wait a single bit time
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try
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{
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Thread.sleep(200);
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} catch (InterruptedException e)
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{
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log.log(Level.SEVERE,null, e);
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}
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}
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/**
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* send a byte with 5 baud line speed
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* this version sends out timed line break bits w/o changing the nominal
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* baud rate
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*
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* @param address CU to be addressed
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*/
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private void sendByte5Baud(int address)
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throws IOException
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{
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long start = System.currentTimeMillis();
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// ensure stop bit
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// sendBit5Baud(true);
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// start sending
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// device.setDTR(false);
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// start bit
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sendBit5Baud(false);
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// 8 data bits, LSB first
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for (int i = 0; i < 8; i++)
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{
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sendBit5Baud((address & (1 << i)) != 0);
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}
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// stop bit
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sendBit5Baud(true);
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// finish sending
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// device.setDTR(true);
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log.fine(String.format("TX-5Baud:%02X finished after %dms", address, System.currentTimeMillis() - start));
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}
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/**
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* Initialize communication by sending specified ECU address with 5 baud
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*
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* @param address ECU to be addressed
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* @return initialization status (0=OK, -1=Error)
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*/
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private void send5Baud(int address)
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throws IOException
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{
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int result = 0;
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setProtStat(ProtStatus.CONNECTING);
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sendByte5Baud(address);
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message = "";
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// return status
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}
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/**
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* send specified char to output device
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*
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* @param txByte byte to be sent
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* @param rememberTx remember last TX character
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*/
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private void writeChar(char txByte, boolean rememberTx)
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{
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try
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{
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log.fine("TX:" + String.format("%02X", (byte) txByte));
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// if this byte should be remembered as TX byte, do it
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if (rememberTx)
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{
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lastTxChar = txByte;
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}
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wrtr.write((int) txByte);
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pktStat = PacketStatus.ECHO;
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} catch (Exception ex)
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{
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log.log(Level.SEVERE,this.toString(), ex);
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}
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}
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/**
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* confirm reception of last byte by sending complement of it back
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*
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* @param lastByte last received byte
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*/
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private void confirmByte(char lastByte)
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{
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// change to complement status ...
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pktStat = PacketStatus.COMPLEMENT;
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writeChar((char) ~lastByte, true);
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}
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/**
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* Handler for receiving chars from serial port
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*/
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class RxThread extends Thread
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{
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@Override
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public void run()
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{
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int chr;
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log.fine("Reader Thread started");
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while (rdr != null)
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{
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try
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{
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chr = rdr.read();
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log.fine(String.format("RX:%02X : %c\t%s\t%s", chr, chr < 32 || chr > 127 ? '.' : chr,
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getProtStat(), pktStat));
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switch (getProtStat())
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{
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case RECEIVING:
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// restart comm timeout timer
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commTimer.restart();
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switch (pktStat)
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{
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case ECHO:
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lastTxChar = 0;
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// ignore the echo of sent complement
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pktStat = PacketStatus.DATA;
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break;
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case COMPLEMENT:
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// ignore the echo of sent complement
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pktStat = PacketStatus.DATA;
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break;
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case DATA:
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// remember time of last RX
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lastRxTime = System.currentTimeMillis();
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// add char to current RX message
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message += (char) chr;
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// do we have received a complete package?
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if (chr == 0x03 && message.length() > message.charAt(0))
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{
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//
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// package is complete
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//
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log.fine("RX:" + ProtUtils.hexDumpBuffer(message.toCharArray()));
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// update block counter with the received one
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blockCounter = message.charAt(1);
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// notify protocol handler of the new package
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messageHandler.handleTelegram(message.toCharArray());
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// clear the message
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message = "";
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// and change to send status
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setProtStat(ProtStatus.SENDING);
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sendNextByte();
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} else
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{
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//
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// package is still incomplete
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//
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// and send out confirmation for received byte
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confirmByte((char) chr);
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}
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break;
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}
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break;
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case SENDING:
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{
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switch (pktStat)
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{
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case ECHO:
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case DATA:
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// ignore the echo of sent data
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pktStat = PacketStatus.COMPLEMENT;
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break;
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case COMPLEMENT:
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// restart comm timeout timer
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commTimer.restart();
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if (chr == (~lastTxChar & 0xFF))
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{
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pktStat = PacketStatus.DATA;
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sendNextByte();
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} else
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{
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log.log(Level.SEVERE,String.format("Wrong complement:%02X, expected:%02X", chr, ~lastTxChar));
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// TODO: handle communication error
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}
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break;
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}
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}
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break;
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case CONNECTING:
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{
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// if we receive the echo of the init byte, sending is done
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if (chr == lastTxChar)
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{
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// ignore echo byte
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} else
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{
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if (chr == SYNC_CHAR)
|
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{
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message = "";
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}
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// otherwise collect sync and key bytes
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message += (char) chr;
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// did we receive all INIT bytes (SYNC_CHAR, KW-lo, KW-hi)?
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if (message.length() > 2 && message.charAt(0) == SYNC_CHAR)
|
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{
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// notify protocol handler of initialization message to get keyword etc
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// messageHandler.handleTelegram(message.toCharArray());
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message = "";
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// Initialization is finished, change to status RECEIVING
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setProtStat(ProtStatus.RECEIVING);
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// confirm the last received byte
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confirmByte((char) chr);
|
||||
}
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||||
}
|
||||
}
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default:
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break;
|
||||
}
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||||
} catch (Exception ex)
|
||||
{
|
||||
log.log(Level.SEVERE,ex.toString());
|
||||
try
|
||||
{
|
||||
sleep(1000);
|
||||
} catch (InterruptedException ex1)
|
||||
{
|
||||
log.log(Level.SEVERE,ex1.toString());
|
||||
}
|
||||
}
|
||||
}
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log.warning("Reader Tread finished");
|
||||
}
|
||||
}
|
||||
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||||
/**
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* write a telegram to serial port
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||||
* implementation of SerialHandler
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||||
*/
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||||
@Override
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||||
public int writeTelegram(char[] buffer)
|
||||
{
|
||||
return writeTelegram(buffer, 0, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* write a telegram to serial port
|
||||
* implementation of SerialHandler
|
||||
*/
|
||||
@Override
|
||||
public int writeTelegram(char[] buffer, int type, Object id)
|
||||
{
|
||||
return enqueueTelegram(buffer);
|
||||
}
|
||||
|
||||
/**
|
||||
* start the serial handler
|
||||
* Implementation for compatibility
|
||||
*/
|
||||
@Override
|
||||
public void start()
|
||||
{
|
||||
// start the receive thread
|
||||
new Thread()
|
||||
{
|
||||
@Override
|
||||
public void run()
|
||||
{
|
||||
init5Baud(getCurrAddress());
|
||||
}
|
||||
}.start();
|
||||
new RxThread().start();
|
||||
}
|
||||
|
||||
/**
|
||||
* send next available byte
|
||||
*
|
||||
* @return error status of dequeue and send operation
|
||||
*/
|
||||
private void sendNextByte()
|
||||
{
|
||||
int result = 0;
|
||||
// wait for slow ECUs
|
||||
try
|
||||
{
|
||||
// calculate remaining time to wait (Sytem time resolution sucks...)
|
||||
long tDiff = interByteTime - ((System.currentTimeMillis() - lastRxTime) * 1000000000);
|
||||
if (tDiff > 0)
|
||||
{
|
||||
log.fine("TX: waiting " + tDiff + " ns");
|
||||
Thread.sleep(tDiff / 1000000L, (int) (tDiff % 1000000L));
|
||||
}
|
||||
} catch (InterruptedException ex)
|
||||
{
|
||||
log.log(Level.SEVERE,"wait: " + ex.toString());
|
||||
}
|
||||
|
||||
// if we have to dequeue a new telegram ...
|
||||
if (currTxCharPos >= currTxTgm.length)
|
||||
{
|
||||
// ... then try to dequeue one
|
||||
result = dequeueTelegram();
|
||||
}
|
||||
// if there is something to send, send the next char
|
||||
if (result == 0)
|
||||
{
|
||||
writeChar(currTxTgm[currTxCharPos++], true);
|
||||
if (currTxCharPos >= currTxTgm.length)
|
||||
{
|
||||
setProtStat(ProtStatus.RECEIVING);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* enqueue a telegram to be sent
|
||||
*
|
||||
* @param buffer telegram to be sent
|
||||
* @return error status of enqueue
|
||||
*/
|
||||
private int enqueueTelegram(char[] buffer)
|
||||
{
|
||||
int result = 0;
|
||||
|
||||
// if the queue is empty and current message is completely sent
|
||||
if (txTelegramQueue.size() == 0 && currTxCharPos >= currTxTgm.length)
|
||||
{
|
||||
// make buffer the current telegram
|
||||
currTxTgm = buffer;
|
||||
currTxCharPos = 0;
|
||||
} else
|
||||
{
|
||||
// otherwise put it into queue
|
||||
result = txTelegramQueue.add(buffer) ? 0 : -1;
|
||||
}
|
||||
|
||||
return (result);
|
||||
}
|
||||
|
||||
/**
|
||||
* get a acknowledge telegram for current protocol state
|
||||
*
|
||||
* @return ACK telegram with current block counter
|
||||
*/
|
||||
private char[] getAckTelegram()
|
||||
{
|
||||
return new char[]
|
||||
{
|
||||
0x03, ++blockCounter, 0x09, 0x03
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* dequeue next telegram to be sent
|
||||
*
|
||||
* @return error code of dequeue operation
|
||||
*/
|
||||
private int dequeueTelegram()
|
||||
{
|
||||
int result;
|
||||
// is there any telegram in the queue?
|
||||
if (txTelegramQueue.size() > 0)
|
||||
{
|
||||
// ... then dequeue it
|
||||
currTxTgm = txTelegramQueue.remove(0);
|
||||
// if necessary, adjust block counter
|
||||
if (currTxTgm[1] != (blockCounter + 1))
|
||||
{
|
||||
log.info(String.format("MsgCounter adjusted:%02x->%02x", (int) currTxTgm[1], (int) blockCounter + 1));
|
||||
currTxTgm[1] = ++blockCounter;
|
||||
}
|
||||
// ... and set byte pointer to start of telegram
|
||||
currTxCharPos = 0;
|
||||
result = 0;
|
||||
} else
|
||||
{
|
||||
// nothing in the pipe, so just send an acknowledge telegram
|
||||
currTxTgm = getAckTelegram();
|
||||
currTxCharPos = 0;
|
||||
result = 0;
|
||||
}
|
||||
return (result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Initialize communication by sending specified ECU address with 5 baud
|
||||
*
|
||||
* @param address ECU to be addressed
|
||||
* @return baud rate of successful connection, or 0 if no connection could be established
|
||||
*/
|
||||
public synchronized int init5Baud(int address)
|
||||
{
|
||||
int result = 0;
|
||||
|
||||
// set current address
|
||||
setCurrAddress(address);
|
||||
try
|
||||
{
|
||||
setDeviceName(deviceName);
|
||||
// loop through all known baud rates
|
||||
for (int i = 0; i < baudRates.length; i++)
|
||||
{
|
||||
log.info(String.format("Init Device:%s Address:%02x, Speed:%d", deviceName, address, baudRates[i]));
|
||||
// set communication baud rate
|
||||
setCustomBaudRate(baudRates[i]);
|
||||
// remember current baud rate
|
||||
setCurrBaudRate(baudRates[i]);
|
||||
setProtStat(ProtStatus.CONNECTING);
|
||||
// init communication with 5 baud address
|
||||
send5Baud(address);
|
||||
try
|
||||
{
|
||||
Thread.sleep(500);
|
||||
} catch (InterruptedException e)
|
||||
{
|
||||
log.log(Level.SEVERE,"Sleep", e);
|
||||
}
|
||||
// if we received an answer, we are not initializing any more
|
||||
if (getProtStat() != ProtStatus.CONNECTING)
|
||||
{
|
||||
log.info(String.format("Init OK Device:%s Address:%02x, Speed:%d", deviceName, address, baudRates[i]));
|
||||
// set return value
|
||||
result = getCurrBaudRate();
|
||||
// start communication timer
|
||||
commTimer.restart();
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (result == 0)
|
||||
{
|
||||
log.warning(String.format("Init Timeout Device:%s Address:%02x", deviceName, address));
|
||||
close();
|
||||
}
|
||||
} catch (Exception ex)
|
||||
{
|
||||
log.log(Level.SEVERE,deviceName + ": " + ex.toString());
|
||||
close();
|
||||
setProtStat(ProtStatus.ERROR);
|
||||
result = 0;
|
||||
}
|
||||
|
||||
// remember current baud rate
|
||||
setCurrBaudRate(result);
|
||||
return (result);
|
||||
}
|
||||
|
||||
/**
|
||||
* The main routine for testing
|
||||
*
|
||||
* @param args the command line arguments
|
||||
*/
|
||||
public static void main(String args[])
|
||||
{
|
||||
// set default parameters
|
||||
int address = 0x01;
|
||||
String device = "/dev/ttyUSB0";
|
||||
// update parameters by command line params
|
||||
if (args.length > 0)
|
||||
{
|
||||
device = args[0];
|
||||
}
|
||||
if (args.length > 1)
|
||||
{
|
||||
address = Integer.parseInt(args[1], 16);
|
||||
}
|
||||
|
||||
KLHandler hdlr = new KLHandler(device);
|
||||
|
||||
hdlr.init5Baud(address);
|
||||
|
||||
// wait until we are shutting down
|
||||
while (hdlr.getProtStat() != ProtStatus.CONNECTING
|
||||
&& hdlr.getProtStat() != ProtStatus.OFFLINE)
|
||||
{
|
||||
try
|
||||
{
|
||||
Thread.sleep(1000);
|
||||
} catch (Exception ignored)
|
||||
{
|
||||
}
|
||||
}
|
||||
hdlr.close();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user