/**
* Copyright (c) 2010-2014, openHAB.org 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
*/
package org.openhab.binding.openenergymonitor.protocol;
import java.io.IOException;
import java.io.InputStream;
import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import org.openhab.binding.openenergymonitor.internal.OpenEnergyMonitorException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Connector for serial port communication.
*
* @author Pauli Anttila
* @since 1.4.0
*/
public class OpenEnergyMonitorSerialConnector extends
OpenEnergyMonitorConnector {
private static final Logger logger = LoggerFactory
.getLogger(OpenEnergyMonitorSerialConnector.class);
static final int BAUDRATE = 9600;
String portName = null;
SerialPort serialPort = null;
InputStream in = null;
public OpenEnergyMonitorSerialConnector(String portName) {
this.portName = portName;
}
@Override
public void connect() throws OpenEnergyMonitorException {
try {
CommPortIdentifier portIdentifier = CommPortIdentifier
.getPortIdentifier(portName);
CommPort commPort = portIdentifier.open(this.getClass().getName(),
2000);
serialPort = (SerialPort) commPort;
serialPort.setSerialPortParams(BAUDRATE, SerialPort.DATABITS_8,
SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
in = serialPort.getInputStream();
logger.debug("Open Energy Monitor Serial Port message listener started");
} catch (Exception e) {
throw new OpenEnergyMonitorException(e);
}
}
@Override
public void disconnect() throws OpenEnergyMonitorException {
logger.debug("Disconnecting");
try {
logger.debug("Close serial streams");
if (in != null) {
in.close();
}
in = null;
if (serialPort != null) {
logger.debug("Close serial port");
serialPort.close();
serialPort = null;
}
} catch (IOException e) {
throw new OpenEnergyMonitorException(e);
}
logger.debug("Closed");
}
@Override
public byte[] receiveDatagram() throws OpenEnergyMonitorException {
if (in == null) {
connect();
}
throw new OpenEnergyMonitorException("Not implemented");
/*
byte[] buffer = new byte[1024];
int len = -1;
try {
while ((len = this.in.read(buffer)) > 0) {
for (int i = 0; i < len; i++) {
}
}
} catch (IOException e) {
throw new OpenEnergyMonitorException(
"Error occured while receiving data", e);
}
*/
}
}