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/*******************************************************************************
* Copyright (c) 2015 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.utils.serial;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.regex.Pattern;
import org.eclipse.core.runtime.Platform;
/**
* @since 5.8
*/
public class SerialPort {
private final String portName;
private boolean isOpen;
private BaudRate baudRate = BaudRate.B115200;
private ByteSize byteSize = ByteSize.B8;
private Parity parity = Parity.None;
private StopBits stopBits = StopBits.S1;
private long handle;
private static final String PORT_OPEN = "Port is open";
static {
System.loadLibrary("serial"); //$NON-NLS-1$
}
/**
* Create a serial port that connect to the given serial device.
*
* @param portName name for the serial device.
*/
public SerialPort(String portName) {
this.portName = portName;
}
/**
* List the available serial ports.
*
* @return serial ports
*/
public static String[] list() {
if (Platform.getOS().equals(Platform.OS_MACOSX)) {
File dev = new File("/dev"); //$NON-NLS-1$
final Pattern pattern = Pattern.compile("tty\\.(usbserial|usbmodem).*"); //$NON-NLS-1$
File[] files = dev.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return pattern.matcher(name).matches();
}
});
if (files == null) {
return new String[0];
}
String[] names = new String[files.length];
for (int i = 0; i < files.length; i++) {
names[i] = files[i].getAbsolutePath();
}
return names;
} else {
return new String[0];
}
}
/**
* Return the name for this serial port.
*
* @return serial port name
*/
public String getPortName() {
return portName;
}
public void open() throws IOException {
handle = open0(portName, baudRate.getRate(), byteSize.getSize(), parity.ordinal(), stopBits.ordinal());
isOpen = true;
}
private native long open0(String portName, int baudRate, int byteSize, int parity, int stopBits) throws IOException;
public void close() throws IOException {
close0(handle);
isOpen = false;
}
private native void close0(long handle) throws IOException;
public boolean isOpen() {
return isOpen;
}
public void setBaudRate(BaudRate rate) throws IOException {
if (isOpen) {
throw new IOException(PORT_OPEN);
}
this.baudRate = rate;
}
public BaudRate getBaudRate() {
return baudRate;
}
public void setByteSize(ByteSize size) throws IOException {
if (isOpen) {
throw new IOException(PORT_OPEN);
}
this.byteSize = size;
}
public ByteSize getByteSize() {
return byteSize;
}
public void setParity(Parity parity) throws IOException {
if (isOpen) {
throw new IOException(PORT_OPEN);
}
this.parity = parity;
}
public Parity getParity() {
return parity;
}
public void setStopBit(StopBits stopBits) throws IOException {
if (isOpen) {
throw new IOException(PORT_OPEN);
}
this.stopBits = stopBits;
}
public StopBits getStopBits() {
return stopBits;
}
public InputStream getInputStream() {
return new InputStream() {
@Override
public int read() throws IOException {
if (isOpen()) {
return read0(handle);
} else {
return -1;
}
}
@Override
public void close() throws IOException {
SerialPort.this.close();
}
};
}
private native int read0(long handle) throws IOException;
public OutputStream getOutputStream() {
return new OutputStream() {
@Override
public void write(int b) throws IOException {
if (isOpen()) {
write0(handle, b);
}
}
@Override
public void close() throws IOException {
SerialPort.this.close();
}
};
}
private native void write0(long handle, int b) throws IOException;
}
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