private void write(byte[] data) {
try {
if (m_out == null) {
m_PortIdPrinter =
CommPortIdentifier.getPortIdentifier(
m_sPortScale); // Tomamos el puerto
m_CommPortPrinter =
(SerialPort) m_PortIdPrinter.open("PORTID", 2000); // Abrimos el puerto
m_out = m_CommPortPrinter.getOutputStream(); // Tomamos el chorro de escritura
m_in = m_CommPortPrinter.getInputStream();
m_CommPortPrinter.addEventListener(this);
m_CommPortPrinter.notifyOnDataAvailable(true);
m_CommPortPrinter.setSerialPortParams(
4800,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_ODD); // Configuramos el puerto
}
m_out.write(data);
} catch (NoSuchPortException e) {
e.printStackTrace();
} catch (PortInUseException e) {
e.printStackTrace();
} catch (UnsupportedCommOperationException e) {
e.printStackTrace();
} catch (TooManyListenersException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/*
* Open the port, wait for chip init
*/
public static int initialize(String portName) {
System.out.println("Enumerating serial ports:");
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
// DDT
System.out.println(portId.getName());
if (portId.getName().equals(portName)) {
System.out.println("Name match on port " + portName);
// Init the port, matches name we were given
try {
serialPort = (SerialPort) portId.open("tx-skeleton", 64);
} catch (PortInUseException e) {
e.printStackTrace();
System.out.println("Port in use!");
return (4);
}
try {
inputStream = serialPort.getInputStream();
outputStream = serialPort.getOutputStream();
} catch (IOException e) {
System.out.println("Unable to connect to I/O streams");
return (3);
}
try {
System.out.println("Initializing ADXL202 board...");
// 38400N81
serialPort.setSerialPortParams(
38400, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
// ADXL202 is powered via DTR line, so set it on
serialPort.setDTR(true);
try {
// Wait a couple of seconds for chip to initialize (blinking LED)
Thread.sleep(2000);
} catch (InterruptedException ie) {
}
} catch (UnsupportedCommOperationException e) {
System.out.println("Unable to configure serial port!");
return (1);
}
return (0);
}
}
}
return (1);
}
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;
}
}