deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

added option to program Sky nodes from the Java interface

Browse source
This commit is contained in:
nifi 2008-07-10 14:52:59 +00:00
parent e75579623a
commit c4b197a2a4
5 changed files with 638 additions and 53 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
examples/sky-shell/build.xml
View file

@ -27,13 +27,13 @@
<target name="dist" depends="compile">
<mkdir dir="${dist}"/>
<jar destfile="${dist}/${archive}" basedir="${build}">
<!-- <fileset dir="${build}"/> -->
<manifest>
<attribute name="Main-Class" value="${main}"/>
<attribute name="Class-Path" value="lib/jcommon-1.0.13.jar lib/jfreechart-1.0.10.jar"/>
</manifest>
</jar>
<copy todir="${dist}" file="collect-init.script"/>
<copy todir="${dist}" file="sky-shell.ihex"/>
<mkdir dir="${dist}/lib"/>
<copy todir="${dist}/lib">
<fileset dir="${lib}">
@ -42,10 +42,7 @@
</copy>
<mkdir dir="${dist}/tools"/>
<copy todir="${dist}/tools">
<fileset dir="${contiki}/tools/sky">
<include name="**/motelist*"/>
<include name="**/serialdump*"/>
</fileset>
<fileset dir="${contiki}/tools/sky"/>
</copy>
<copy file="${contiki}/tools/cygwin/cygwin1.dll" todir="${dist}/tools"/>
</target>

116
examples/sky-shell/src/se/sics/contiki/collect/CollectServer.java
View file

@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: CollectServer.java,v 1.3 2008/07/10 00:19:20 nifi Exp $
* $Id: CollectServer.java,v 1.4 2008/07/10 14:52:59 nifi Exp $
*
* -----------------------------------------------------------------
*
@ -34,8 +34,8 @@
*
* Authors : Joakim Eriksson, Niclas Finne
* Created : 3 jul 2008
* Updated : $Date: 2008/07/10 00:19:20 $
* $Revision: 1.3 $
* Updated : $Date: 2008/07/10 14:52:59 $
* $Revision: 1.4 $
*/
package se.sics.contiki.collect;
@ -89,13 +89,12 @@ import se.sics.contiki.collect.gui.TimeChartPanel;
public class CollectServer {
public static final String WINDOW_TITLE = "Sensor Data Collect with Contiki";
public static final double TICKS_PER_SECOND = 4096; /* TODO Convert from TimerB ticks to seconds */
public static final double UPDATE_PERIOD = 1; /* TODO Set update period (1 second?) */
public static final String CONFIG_FILE = "collect.conf";
public static final String SENSORDATA_FILE = "sensordata.log";
public static final String CONFIG_DATA_FILE = "collect-data.conf";
public static final String INIT_SCRIPT = "collect-init.script";
public static final String FIRMWARE_FILE = "sky-shell.ihex";
private Properties config = new Properties();
@ -110,6 +109,7 @@ public class CollectServer {
private JFrame window;
private JTabbedPane mainPanel;
private JMenuItem serialItem;
private Visualizer[] visualizers;
private MapPanel mapPanel;
@ -158,9 +158,6 @@ public class CollectServer {
nodeModel = new DefaultListModel();
nodeList = new JList(nodeModel);
nodeList.setPrototypeCellValue("Node 88888");
// DefaultListCellRenderer l = new DefaultListCellRenderer();
// l.setHorizontalAlignment(DefaultListCellRenderer.RIGHT);
// nodeList.setCellRenderer(l);
nodeList.addListSelectionListener(new ListSelectionListener() {
@Override
@ -293,7 +290,14 @@ public class CollectServer {
JMenu fileMenu = new JMenu("File");
fileMenu.setMnemonic(KeyEvent.VK_F);
menuBar.add(fileMenu);
serialItem = new JMenuItem("Connect to serial");
serialItem.addActionListener(new SerialItemHandler());
fileMenu.add(serialItem);
JMenuItem item = new JMenuItem("Program Sky nodes...");
item.addActionListener(new ProgramItemHandler());
fileMenu.add(item);
fileMenu.addSeparator();
final JMenuItem clearMapItem = new JMenuItem("Remove Map Background");
clearMapItem.addActionListener(new ActionListener() {
@ -306,7 +310,7 @@ public class CollectServer {
});
clearMapItem.setEnabled(mapPanel.getMapBackground() != null);
JMenuItem item = new JMenuItem("Select Map Background...");
item = new JMenuItem("Select Map Background...");
item.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
@ -404,12 +408,6 @@ public class CollectServer {
}
});
if (comPort == null) {
comPort = MoteFinder.selectComPort(window);
// if (comPort == null) {
// exit();
// }
}
serialConnection = new SerialConnection() {
private boolean hasOpened;
@ -448,6 +446,7 @@ public class CollectServer {
} else {
prefix = "Failed to connect to " + getComPort() + '\n';
}
if (!isClosed) {
String options[] = {"Retry", "Search for connected nodes", "Cancel"};
int value = JOptionPane.showOptionDialog(window,
prefix + "Do you want to retry or search for connected nodes?",
@ -470,6 +469,7 @@ public class CollectServer {
}
}
}
}
@Override
protected void serialData(String line) {
@ -477,10 +477,23 @@ public class CollectServer {
}
};
if (comPort != null) {
serialConnection.setComPort(comPort);
}
connectToSerial();
}
protected void connectToSerial() {
if (!serialConnection.isOpen()) {
String comPort = serialConnection.getComPort();
if (comPort == null) {
comPort = MoteFinder.selectComPort(window);
}
if (comPort != null) {
serialConnection.open(comPort);
}
}
}
private void exit() {
/* TODO Clean up resources */
@ -551,7 +564,9 @@ public class CollectServer {
} else {
window.setTitle(WINDOW_TITLE + " (" + message + ')');
}
serialItem.setText(serialConnection.isOpen() ? "Disconnect from serial" : "Connect to serial");
}
});
}
@ -860,6 +875,77 @@ public class CollectServer {
this.sensorDataOutput = null;
}
protected class SerialItemHandler implements ActionListener, Runnable {
private boolean isRunning;
public void actionPerformed(ActionEvent e) {
if (!isRunning) {
isRunning = true;
new Thread(this, "serial").start();
}
}
public void run() {
try {
if (serialConnection != null && serialConnection.isOpen()) {
serialConnection.close();
} else {
connectToSerial();
}
} finally {
isRunning = false;
}
}
}
protected class ProgramItemHandler implements ActionListener, Runnable {
private boolean isRunning = false;
public void actionPerformed(ActionEvent e) {
if (!isRunning) {
isRunning = true;
new Thread(this, "program thread").start();
}
}
@Override
public void run() {
try {
MoteProgrammer mp = new MoteProgrammer();
mp.setParentComponent(window);
mp.setFirmwareFile(FIRMWARE_FILE);
mp.searchForMotes();
int[] motes = mp.getMotes();
if (motes == null || motes.length == 0) {
JOptionPane.showMessageDialog(window, "Could not find any connected Sky nodes", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
int reply = JOptionPane.showConfirmDialog(window, "Found " + motes.length + " connected Sky nodes.\n"
+ "Do you want to upload the firmware " + FIRMWARE_FILE + '?');
if (reply == JFileChooser.APPROVE_OPTION) {
boolean wasOpen = serialConnection.isOpen();
serialConnection.close();
if (wasOpen) {
Thread.sleep(1000);
}
mp.programMotes();
mp.waitForProcess();
if (wasOpen) {
connectToSerial();
}
}
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(window, "Programming failed: " + e, "Error", JOptionPane.ERROR_MESSAGE);
} finally {
isRunning = false;
}
}
}
// -------------------------------------------------------------------
// Main
// -------------------------------------------------------------------

269
examples/sky-shell/src/se/sics/contiki/collect/MoteProgrammer.java Normal file
View file

@ -0,0 +1,269 @@
/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* $Id: MoteProgrammer.java,v 1.1 2008/07/10 14:52:59 nifi Exp $
*
* -----------------------------------------------------------------
*
* MoteProgrammer
*
* Authors : Joakim Eriksson, Niclas Finne
* Created : 10 jul 2008
* Updated : $Date: 2008/07/10 14:52:59 $
* $Revision: 1.1 $
*/
package se.sics.contiki.collect;
import java.awt.BorderLayout;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
/**
*
*/
public class MoteProgrammer {
private MoteProgrammerProcess[] processes;
private int[] motes;
private String firmwareFile;
private Window parent;
protected JTextArea logTextArea;
protected JDialog dialog;
protected JButton closeButton;
private boolean isDone;
public MoteProgrammer() {
}
public Window getParentComponent() {
return parent;
}
public void setParentComponent(Window parent) {
this.parent = parent;
}
public boolean hasMotes() {
return motes != null && motes.length > 0;
}
public int[] getMotes() {
return motes;
}
public void setMotes(int[] motes) {
this.motes = motes;
}
public void searchForMotes() throws IOException {
MoteFinder finder = new MoteFinder();
motes = finder.getMotes();
finder.close();
}
public String getFirmwareFile() {
return firmwareFile;
}
public void setFirmwareFile(String firmwareFile) {
this.firmwareFile = firmwareFile;
}
public void programMotes() throws IOException {
if (firmwareFile == null) {
throw new IllegalStateException("no firmware");
}
if (!hasMotes()) {
throw new IllegalStateException("no motes");
}
File fp = new File(firmwareFile);
if (!fp.canRead()) {
throw new IllegalStateException("can not read firmware file '" + fp.getAbsolutePath() + '\'');
}
if (parent != null) {
// Use GUI
dialog = new JDialog(parent, "Mote Programmer");
logTextArea = new JTextArea(28, 80);
logTextArea.setEditable(false);
logTextArea.setLineWrap(true);
dialog.getContentPane().add(new JScrollPane(logTextArea), BorderLayout.CENTER);
JPanel panel = new JPanel();
closeButton = new JButton("Cancel");
closeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MoteProgrammer.this.close();
}
});
panel.add(closeButton);
dialog.getContentPane().add(panel, BorderLayout.SOUTH);
dialog.pack();
dialog.setLocationRelativeTo(parent);
dialog.setVisible(true);
}
processes = new MoteProgrammerProcess[motes.length];
isDone = false;
try {
log("Programming " + motes.length + " motes with '" + firmwareFile + '\'', null);
for (int i = 0, n = processes.length; i < n; i++) {
processes[i] = new MoteProgrammerProcess(motes[i], firmwareFile) {
protected void logLine(String line, boolean stderr, Throwable e) {
if (!handleLogLine(this, line, stderr, e)) {
super.logLine(line, stderr, e);
}
}
protected void processEnded() {
handleProcessEnded(this);
}
};
processes[i].start();
}
} catch (Exception e) {
throw (IOException) new IOException("Failed to program motes").initCause(e);
}
}
public synchronized void waitForProcess() throws InterruptedException {
while (!isDone) {
wait();
}
}
public void close() {
MoteProgrammerProcess[] processes = this.processes;
if (processes != null) {
this.processes = null;
for (int i = 0, n = processes.length; i < n; i++) {
if (processes[i] != null) {
processes[i].stop();
}
}
}
if (dialog != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
dialog.setVisible(false);
}
});
}
isDone = true;
synchronized (this) {
notifyAll();
}
}
protected void handleProcessEnded(MoteProgrammerProcess process) {
// Another process has finished
log("Mote@" + process.getMote() + "> finished" + (process.hasError() ? " with errors": ""), null);
MoteProgrammerProcess[] processes = this.processes;
if (processes != null) {
int running = 0;
int errors = 0;
for(MoteProgrammerProcess p: processes) {
if (p.isRunning()) {
running++;
} else if (p.hasError()) {
errors++;
}
}
if (running == 0) {
// All processes has finished
isDone = true;
log("Programming finished with " + errors + " errors.", null);
if (closeButton != null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
closeButton.setText("Close");
}});
}
synchronized (this) {
notifyAll();
}
}
}
}
protected boolean handleLogLine(MoteProgrammerProcess moteProgrammerProcess,
String line, boolean stderr, final Throwable e) {
log("Mote@" + moteProgrammerProcess.getMote() + "> " + line, e);
return true;
}
private void log(String line, final Throwable e) {
System.err.println(line);
if (e != null) {
e.printStackTrace();
line += "\n " + e;
}
final String text = line;
SwingUtilities.invokeLater(new Runnable() {
public void run() {
int len = logTextArea.getDocument().getLength();
if (len == 0) {
logTextArea.append(text);
} else {
logTextArea.append('\n' + text);
len++;
}
logTextArea.setCaretPosition(len + text.length());
}
});
}
public static void main(String[] args) throws IOException {
MoteProgrammer mp = new MoteProgrammer();
if (args.length < 1 || args.length > 2) {
System.err.println("Usage: MoteProgrammer <firmware> [mote]");
System.exit(1);
}
mp.setFirmwareFile(args[0]);
if (args.length == 2) {
mp.setMotes(new int[] { Integer.parseInt(args[1]) });
} else {
mp.searchForMotes();
}
if (!mp.hasMotes()) {
System.err.println("No motes connected");
System.exit(1);
}
mp.programMotes();
}
}

229
examples/sky-shell/src/se/sics/contiki/collect/MoteProgrammerProcess.java Normal file
View file

@ -0,0 +1,229 @@
/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* $Id: MoteProgrammerProcess.java,v 1.1 2008/07/10 14:52:59 nifi Exp $
*
* -----------------------------------------------------------------
*
* MoteProgrammerProcess
*
* Authors : Joakim Eriksson, Niclas Finne
* Created : 10 jul 2008
* Updated : $Date: 2008/07/10 14:52:59 $
* $Revision: 1.1 $
*/
package se.sics.contiki.collect;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
*
*/
public class MoteProgrammerProcess {
public static final String BSL_WINDOWS = "./tools/msp430-bsl-windows.exe";
public static final String BSL_LINUX = "./tools/msp430-bsl-linux";
private final int mote;
private final String moteID;
private final String firmwareFile;
private final String[][] commandSet;
private int retry = 3;
private Process currentProcess;
private Thread commandThread;
private boolean isRunning;
private boolean hasError;
public MoteProgrammerProcess(int mote, String firmwareFile) {
this.mote = mote;
this.moteID = "" + (mote - 1);
this.firmwareFile = firmwareFile;
String osName = System.getProperty("os.name").toLowerCase();
String bslCommand;
if (osName.startsWith("win")) {
bslCommand = BSL_WINDOWS;
} else {
bslCommand = BSL_LINUX;
}
commandSet = new String[][] {
{ bslCommand, "--telosb", "-c", moteID, "-e" },
{ bslCommand, "--telosb", "-c", moteID, "-I", "-p", firmwareFile },
{ bslCommand, "--telosb", "-c", moteID, "-r" }
};
}
public int getMote() {
return mote;
}
public String getFirmwareFile() {
return firmwareFile;
}
public int getRetry() {
return retry;
}
public void setRetry(int retry) {
this.retry = retry;
}
public boolean isRunning() {
return isRunning;
}
public boolean hasError() {
return hasError;
}
public void start() {
if (isRunning) {
// Already running
return;
}
isRunning = true;
commandThread = new Thread(new Runnable() {
public void run() {
try {
int count = 0;
do {
if (count > 0) {
logLine("An error occurred. Retrying.", true, null);
}
count++;
hasError = false;
for (int j = 0, m = commandSet.length; j < m && isRunning && !hasError; j++) {
runCommand(commandSet[j]);
Thread.sleep(2000);
}
} while (isRunning && hasError && count < retry);
} catch (Exception e) {
e.printStackTrace();
} finally {
isRunning = false;
processEnded();
}
}
});
commandThread.start();
}
public void stop() {
isRunning = false;
Process process = currentProcess;
if (process != null) {
process.destroy();
}
}
public void waitForProcess() throws InterruptedException {
if (isRunning && commandThread != null) {
commandThread.join();
}
}
protected void processEnded() {
}
private void runCommand(String[] cmd) throws IOException, InterruptedException {
if (currentProcess != null) {
currentProcess.destroy();
}
currentProcess = Runtime.getRuntime().exec(cmd);
final BufferedReader input = new BufferedReader(new InputStreamReader(currentProcess.getInputStream()));
final BufferedReader err = new BufferedReader(new InputStreamReader(currentProcess.getErrorStream()));
/* Start thread listening on stdout */
Thread readInput = new Thread(new Runnable() {
public void run() {
String line;
try {
while ((line = input.readLine()) != null) {
handleLine(line, false);
}
input.close();
} catch (IOException e) {
logLine("Error reading from command", false, e);
}
}
}, "read stdout thread");
/* Start thread listening on stderr */
Thread readError = new Thread(new Runnable() {
public void run() {
String line;
try {
while ((line = err.readLine()) != null) {
handleLine(line, true);
}
err.close();
} catch (IOException e) {
logLine("Error reading from command", true, e);
}
}
}, "read stderr thread");
readInput.start();
readError.start();
// Wait for the bsl program to finish executing
readInput.join();
currentProcess = null;
}
private void handleLine(String line, boolean stderr) {
if (line.toLowerCase().contains("error")) {
hasError = true;
}
logLine(line, stderr, null);
}
protected void logLine(String line, boolean stderr, Throwable e) {
if (stderr) {
System.err.println("Programmer@" + mote + "> " + line);
} else {
System.out.println("Programmer@" + mote + "> " + line);
}
if (e != null) {
e.printStackTrace();
}
}
protected String toString(String[] cmd) {
StringBuilder sb = new StringBuilder();
for (int i = 0, n = cmd.length; i < n; i++) {
if (i > 0) sb.append(' ');
sb.append(cmd[i]);
}
return sb.toString();
}
}

30
examples/sky-shell/src/se/sics/contiki/collect/SerialConnection.java
View file

@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: SerialConnection.java,v 1.1 2008/07/09 23:18:06 nifi Exp $
* $Id: SerialConnection.java,v 1.2 2008/07/10 14:52:59 nifi Exp $
*
* -----------------------------------------------------------------
*
@ -34,8 +34,8 @@
*
* Authors : Joakim Eriksson, Niclas Finne
* Created : 5 jul 2008
* Updated : $Date: 2008/07/09 23:18:06 $
* $Revision: 1.1 $
* Updated : $Date: 2008/07/10 14:52:59 $
* $Revision: 1.2 $
*/
package se.sics.contiki.collect;
@ -56,9 +56,9 @@ public abstract class SerialConnection {
private String comPort;
private Process serialDumpProcess;
private PrintWriter serialOutput;
private boolean isRunning;
private boolean isOpen;
private String lastError;
protected boolean isOpen;
protected boolean isClosed = true;
protected String lastError;
public boolean isOpen() {
return isOpen;
@ -68,14 +68,21 @@ public abstract class SerialConnection {
return comPort;
}
public void setComPort(String comPort) {
this.comPort = comPort;
}
public String getLastError() {
return lastError;
}
public void open(String comPort) {
if (comPort == null) {
throw new IllegalStateException("no com port");
}
close();
this.comPort = comPort;
/* Connect to COM using external serialdump application */
String osName = System.getProperty("os.name").toLowerCase();
String fullCommand;
@ -85,7 +92,7 @@ public abstract class SerialConnection {
fullCommand = SERIALDUMP_LINUX + " " + "-b115200" + " " + comPort;
}
isRunning = true;
isClosed = false;
try {
String[] cmd = fullCommand.split(" ");
@ -161,13 +168,13 @@ public abstract class SerialConnection {
}
public void close() {
isOpen = false;
isRunning = false;
isClosed = true;
lastError = null;
closeConnection();
}
protected void closeConnection() {
isOpen = false;
if (serialOutput != null) {
serialOutput.close();
serialOutput = null;
@ -176,11 +183,8 @@ public abstract class SerialConnection {
serialDumpProcess.destroy();
serialDumpProcess = null;
}
if (isRunning) {
isRunning = false;
serialClosed();
}
}
protected abstract void serialData(String line);