public void close() {
// close connection, save archive
try {
source.CloseRBNBConnection();
} catch (Exception e) {
System.err.println("Exception closing cache: " + e.getMessage());
e.printStackTrace();
}
}
/** Connect from the RBNB * */
private void disconnect() {
if ((cacheSize != 0 || archiveSize != 0) && source != null) {
source.Detach(); // close and keep cache and archive
} else if (source != null) { // they are both zero; close and scrap
source.CloseRBNBConnection();
} else {
}
source = null;
connected = false;
}
/** @param args the command line arguments */
@SuppressWarnings("static-access")
public static void main(String[] args) {
String hostname = "localhost:3333";
String portName = "/dev/tty.KeySerial1";
String srcName = "ADXL-RBNB Accelerometer";
String[] chanNames = {"X", "Y"};
int[] chanIdx = {0, 1};
double[] vals = {0, 0};
String unitsMetadata = "units=G,scale=1,offset=0";
Source source;
ChannelMap cmap;
int cacheSize = 10240; // ! @todo parse from command line
int archiveSize = cacheSize * 10; // ! @todo parse from command line
int idx;
int chanCount = 2;
ADXL chip;
// Setup interrupt handler
DoHook();
System.out.println("Opening serial port");
chip = new ADXL();
if (chip.initialize(portName) == 0) {
portConnected = true;
System.out.println("Serial port initialized OK");
} else {
System.out.println("Error opening serial port");
return;
}
// RBNB connection setup
try {
System.out.println("Opening connection to RBNB on " + hostname);
// Create both a source and a sink, connect both:
source = new Source(cacheSize, "append", archiveSize);
source.OpenRBNBConnection(hostname, srcName);
DTconnected = true;
System.out.println("OK.");
// Setup channel map - names of channels, units
cmap = new ChannelMap();
for (idx = 0; idx < chanCount; idx++) {
chanIdx[idx] = cmap.Add(chanNames[idx]);
// Hardwired units (G) for all three sources
cmap.PutUserInfo(chanIdx[idx], unitsMetadata);
// Not sure if we still need the MIME type or not
cmap.PutMime(chanIdx[idx], "application/octet-stream");
}
source.Register(cmap);
source.Flush(cmap);
} // We don't distinguish between errors in setup phase, just bail out
catch (SAPIException se) {
System.out.println("Error on Turbine - not connected");
DTconnected = false;
return;
}
// ********************************************************************
// Main data loop: read, scale, write.
try {
System.out.println("Turbine connected, running. Press control-c to end");
// Loop - runs until control-c or error.
do {
for (idx = 0; idx < chanCount; idx++) chanIdx[idx] = cmap.Add(chanNames[idx]);
// Read the data from the accelerometer
vals = chip.chipRead();
// Timestamp all channels with client-side time
cmap.PutTimeAuto("timeofday");
for (idx = 0; idx < chanCount; idx++) {
double valBuf[] = {vals[idx]};
cmap.PutDataAsFloat64(cmap.GetIndex(chanNames[idx]), valBuf);
}
source.Flush(cmap);
cmap.Clear();
Thread.sleep(20);
} while (!ctrlC);
} catch (SAPIException mse) {
System.out.println("Error saving data!");
mse.printStackTrace();
} catch (InterruptedException ie) {
System.out.println("Interrupted, exiting.");
}
// Shutdown and exit
if (portConnected) {
chip.closePort(chip.serialPort);
}
if (DTconnected) {
System.out.println("Closing RBNB connection");
// Tell RBNB to keep the data once we close
source.Detach();
source.CloseRBNBConnection();
}
System.out.println("Done, exiting.");
return;
}