private ChannelTree getChannelTree(String pattern) {

    ChannelTree tr = null;

    try {
      sMap = new ChannelMap();
      if ((pattern != null) && (pattern.length() > 0)) sMap.Add(pattern);
      sink.RequestRegistration(sMap);
      sMap = sink.Fetch(-1, sMap);
      tr = ChannelTree.createFromChannelMap(sMap);

    } catch (SAPIException se) {
      se.printStackTrace();
    }

    return tr;
  }
示例#2
0
  /** @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;
  }