@Override
public void open() {
// r�cup�ration de l'identifiant du port
try {
logger.info("Liste des ports : " + CommPortIdentifier.getPortIdentifiers());
final Enumeration identifiers = CommPortIdentifier.getPortIdentifiers();
while (identifiers.hasMoreElements()) {
logger.info(((CommPortIdentifier) identifiers.nextElement()).getName());
}
portId = CommPortIdentifier.getPortIdentifier(connectionDescriptor.getPortName());
} catch (final NoSuchPortException e) {
throw new RuntimeException(
"Rs232Connector (" + connectionDescriptor.getPortName() + ") : " + e.toString());
}
// ouverture du port
try {
serialPort = (SerialPort) portId.open("driver", 2000);
} catch (final PortInUseException e) {
throw new RuntimeException(
"Rs232Connector (" + connectionDescriptor.getPortName() + ") : " + e.toString());
}
// param�trage du port
// hmmmmmmmmmmmm cf :
// http://forum.java.sun.com/thread.jspa?threadID=673793&start=15&tstart=0
boolean result = false;
while (!result) {
try {
serialPort.setSerialPortParams(
connectionDescriptor.getBaudRate(),
connectionDescriptor.getDataBits(),
connectionDescriptor.getStopBits(),
connectionDescriptor.getParity());
result = true;
} catch (final Exception ex) {
logger.error("Unable to set serial ports parameters", ex);
result = false;
try {
Thread.sleep(200);
} catch (final InterruptedException exc) {
logger.error("Error while sleeping", exc);
}
}
}
/** @todo : test */
// Suppression
try {
serialPort.enableReceiveTimeout(5000); // timeout de 1 ms
} catch (final UnsupportedCommOperationException ex) {
logger.warn(
"Warning : impossible to set timeout for port " + connectionDescriptor.getPortName(), ex);
}
try {
// inputStream = new BufferedReader(new
// InputStreamReader(serialPort.getInputStream()));
inputStream = serialPort.getInputStream();
} catch (final IOException e) {
serialPort.close();
throw new RuntimeException(
"Rs232Connector (" + connectionDescriptor.getPortName() + ") : " + e.toString());
}
try {
serialPort.addEventListener(
new SerialPortEventListener() {
@Override
public void serialEvent(final SerialPortEvent evt) {
if (evt.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
synchronized (bufferMonitor) {
if (writeIndex >= BUFFER_LENGTH - 1) {
flushBuffer();
}
try {
byte newData = 0;
while (newData != -1) {
newData = (byte) inputStream.read();
if (newData == -1) {
break;
}
if (writeIndex >= BUFFER_LENGTH - 1) {
flushBuffer();
}
buffer[writeIndex++] = newData;
}
} catch (final Exception exc) {
logger.error("Error reading input stream from serial port", exc);
}
bufferMonitor.notify();
}
}
}
});
serialPort.notifyOnDataAvailable(true);
serialPort.enableReceiveTimeout(20);
} catch (final TooManyListenersException exc) {
logger.error("", exc);
} catch (final UnsupportedCommOperationException exc) {
logger.error("", exc);
}
final Thread threadParse =
new Thread("Rs232Connector_" + connectionDescriptor.getPortName() + "_dispatch_thread") {
@Override
public void run() {
try {
parseThread();
} catch (final Exception e) {
logger.error("Error while parsing thread", e);
}
}
};
threadParse.start();
}
public static void main(String args[]) {
// Command to turn of GPS
int[] turn_off = new int[8];
turn_off[0] = DLE;
turn_off[1] = Pid_Command_Packet;
turn_off[2] = 2; // Length of data
turn_off[3] = Cmnd_Turn_Off_Pwr;
turn_off[4] = 0;
turn_off[6] = DLE;
turn_off[7] = ETX;
calcChecksum(turn_off);
System.out.println("Turn off checksum: " + turn_off[5]);
// Command to ask GPS for time data.
int[] transfer_time = new int[8];
transfer_time[0] = DLE;
transfer_time[1] = Pid_Command_Packet;
transfer_time[2] = 2;
transfer_time[3] = Cmnd_Transfer_Time;
transfer_time[4] = 0;
transfer_time[6] = DLE;
transfer_time[7] = ETX;
calcChecksum(transfer_time);
System.out.println("Transfer time" + transfer_time[5]);
// Command to make a product request to the GPS.
int[] product_request = new int[6];
product_request[0] = DLE;
product_request[1] = Pid_Product_Rqst;
product_request[2] = 0;
product_request[4] = DLE;
product_request[5] = ETX;
calcChecksum(product_request);
System.out.println("Product request:" + product_request[5]);
// Command to ask GPS for position data
int[] transfer_position = new int[8];
transfer_position[0] = DLE;
transfer_position[1] = Pid_Command_Packet;
transfer_position[2] = 2;
transfer_position[3] = Cmnd_Transfer_Posn;
transfer_position[4] = 0;
transfer_position[6] = DLE;
transfer_position[7] = ETX;
calcChecksum(transfer_position);
// Command to ask the GPS to start transmitting PVT data
int[] start_PVT = new int[8];
start_PVT[0] = DLE;
start_PVT[1] = Pid_Command_Packet;
start_PVT[2] = 2;
start_PVT[3] = Cmnd_Start_Pvt_Data;
start_PVT[4] = 0;
start_PVT[6] = DLE;
start_PVT[7] = ETX;
calcChecksum(start_PVT);
// Acknowledge-packet.
int[] ack = new int[8];
ack[0] = DLE;
ack[1] = Pid_Ack_Byte;
ack[2] = 2;
ack[4] = 0;
ack[6] = DLE;
ack[7] = ETX;
SerialPort port;
BufferedInputStream input;
BufferedOutputStream output;
System.out.println("Using COM1.");
// Open port.
try {
port =
(SerialPort) CommPortIdentifier.getPortIdentifier("COM1").open("dk.itu.haas.GPS", 3000);
} catch (NoSuchPortException e) {
System.out.println("No such port!\n" + e.getMessage());
return;
} catch (PortInUseException e) {
System.out.println("Port already in use! (??!)\n" + e.getMessage());
return;
}
try {
input = new BufferedInputStream(port.getInputStream());
output = new BufferedOutputStream(port.getOutputStream());
} catch (IOException e) {
System.out.println("IOException... ");
return;
}
System.out.println("Sending:");
printPacket(turn_off);
sendPacket(output, turn_off);
/*
printPacket(transfer_position);
sendPacket(output, transfer_position);
*/
/*
printPacket(start_PVT);
sendPacket(output, start_PVT);
*/
/*
printPacket(product_request);
sendPacket(output, product_request);
*/
System.out.println("--");
int[] packet;
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
try {
while (input.available() > 0) {
packet = readPacket(input);
if (packet != null) {
System.out.println("Received:");
printPacket(packet);
// Send acknowledge.
ack[3] = packet[1];
calcChecksum(ack);
sendPacket(output, ack);
System.out.println("--");
} else {
System.out.println("No packet received.");
}
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
} catch (IOException e) {
System.out.println("IOError!");
return;
}
}