📄 serialmodemdriver.java
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// SMSLib for Java v3
// A Java API library for sending and receiving SMS via a GSM modem
// or other supported gateways.
// Web Site: http://www.smslib.org
//
// Copyright (C) 2002-2008, Thanasis Delenikas, Athens/GREECE.
// SMSLib is distributed under the terms of the Apache License version 2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.smslib.modem;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.StringTokenizer;
import org.smslib.helper.CommPortIdentifier;
import org.smslib.helper.SerialPort;
import org.smslib.helper.SerialPortEvent;
import org.smslib.helper.SerialPortEventListener;
import org.smslib.AGateway;
import org.smslib.GatewayException;
class SerialModemDriver extends AModemDriver implements SerialPortEventListener
{
private String comPort;
private int baudRate;
private CommPortIdentifier portId;
private SerialPort serialPort;
private InputStream in;
private OutputStream out;
private ThreadReader threadReader;
SerialModemDriver(ModemGateway myGateway, String deviceParms)
{
super(myGateway, deviceParms);
StringTokenizer tokens = new StringTokenizer(deviceParms, ":");
this.comPort = tokens.nextToken();
this.baudRate = Integer.parseInt(tokens.nextToken());
this.serialPort = null;
}
@SuppressWarnings("unused")
@Override
void connectPort() throws GatewayException, IOException, InterruptedException
{
if (this.gateway.getService().S.SERIAL_NOFLUSH) this.gateway.getService().getLogger().logInfo("Comm port flushing is disabled.", null, getGateway().getGatewayId());
if (this.gateway.getService().S.SERIAL_POLLING) this.gateway.getService().getLogger().logInfo("Using polled serial port mode.", null, getGateway().getGatewayId());
try
{
this.gateway.getService().getLogger().logInfo("Opening: " + this.comPort + " @" + this.baudRate, null, getGateway().getGatewayId());
this.portId = CommPortIdentifier.getPortIdentifier(this.comPort);
this.serialPort = this.portId.open("org.smslib", 1971);
this.in = this.serialPort.getInputStream();
this.out = this.serialPort.getOutputStream();
if (!this.gateway.getService().S.SERIAL_POLLING)
{
this.serialPort.notifyOnDataAvailable(true);
this.serialPort.notifyOnOutputEmpty(true);
}
this.serialPort.notifyOnBreakInterrupt(true);
this.serialPort.notifyOnFramingError(true);
this.serialPort.notifyOnOverrunError(true);
this.serialPort.notifyOnParityError(true);
if (this.gateway.getService().S.SERIAL_RTSCTS_OUT) this.serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_RTSCTS_IN | SerialPort.FLOWCONTROL_RTSCTS_OUT);
else this.serialPort.setFlowControlMode(SerialPort.FLOWCONTROL_RTSCTS_IN);
this.serialPort.addEventListener(this);
this.serialPort.setSerialPortParams(this.baudRate, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
this.serialPort.setInputBufferSize(this.gateway.getService().S.SERIAL_BUFFER_SIZE);
this.serialPort.setOutputBufferSize(this.gateway.getService().S.SERIAL_BUFFER_SIZE);
this.serialPort.enableReceiveThreshold(1);
this.serialPort.enableReceiveTimeout(this.gateway.getService().S.SERIAL_TIMEOUT);
if (this.gateway.getService().S.SERIAL_POLLING) this.threadReader = new ThreadReader(this.gateway);
}
catch (Exception e)
{
throw new GatewayException("Comm library exception: " + e.getMessage());
}
}
@SuppressWarnings("unused")
@Override
void disconnectPort() throws IOException, InterruptedException
{
synchronized (this.SYNC_Reader)
{
if (this.gateway.getService().S.SERIAL_POLLING)
{
if (this.threadReader != null)
{
this.threadReader.interrupt();
this.threadReader.join();
}
this.threadReader = null;
}
if (this.serialPort != null) this.serialPort.close();
this.gateway.getService().getLogger().logInfo("Closing: " + this.comPort + " @" + this.baudRate, null, getGateway().getGatewayId());
}
}
@Override
void clear() throws IOException
{
while (portHasData())
read();
}
@Override
boolean portHasData() throws IOException
{
return (this.in.available() > 0);
}
public void serialEvent(SerialPortEvent event)
{
int eventType = event.getEventType();
if (eventType == SerialPortEvent.OE) this.gateway.getService().getLogger().logError("Overrun Error!", null, getGateway().getGatewayId());
else if (eventType == SerialPortEvent.FE) this.gateway.getService().getLogger().logError("Framing Error!", null, getGateway().getGatewayId());
else if (eventType == SerialPortEvent.PE) this.gateway.getService().getLogger().logError("Parity Error!", null, getGateway().getGatewayId());
else if (eventType == SerialPortEvent.DATA_AVAILABLE)
{
if (!this.gateway.getService().S.SERIAL_POLLING)
{
synchronized (this.SYNC_Reader)
{
this.dataReceived = true;
this.SYNC_Reader.notifyAll();
}
}
}
}
@Override
public void write(char c) throws IOException
{
this.out.write(c);
if (!this.gateway.getService().S.SERIAL_NOFLUSH) this.out.flush();
}
@Override
public void write(byte[] s) throws IOException
{
this.out.write(s);
if (!this.gateway.getService().S.SERIAL_NOFLUSH) this.out.flush();
}
@Override
int read() throws IOException
{
return this.in.read();
}
private class ThreadReader extends Thread
{
private AGateway gtw;
public ThreadReader(AGateway myGtw)
{
this.gtw = myGtw;
start();
}
@Override
public void run()
{
this.gtw.getService().getLogger().logDebug("ThreadReader started.", null, getGateway().getGatewayId());
while (true)
{
try
{
sleep(SerialModemDriver.this.gateway.getService().S.SERIAL_POLLING_INTERVAL);
if (portHasData())
{
synchronized (SerialModemDriver.this.SYNC_Reader)
{
SerialModemDriver.this.dataReceived = true;
SerialModemDriver.this.SYNC_Reader.notifyAll();
}
}
}
catch (InterruptedException e)
{
break;
}
catch (Exception e)
{
this.gtw.getService().getLogger().logError("ThreadReader error. ", e, getGateway().getGatewayId());
}
}
this.gtw.getService().getLogger().logDebug("ThreadReader stopped.", null, getGateway().getGatewayId());
}
}
}
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