Esempio n. 1
0
  /**
   * @param parity 'N' for none, 'E' for even, 'O' for odd, 'M' for mark, 'S' for space ('N' is the
   *     default)
   * @param dataBits 8 is the default
   * @param stopBits 1.0, 1.5, or 2.0 (1.0 is the default)
   */
  public Serial(
      PApplet parent, String portName, int baudRate, char parity, int dataBits, float stopBits) {
    this.parent = parent;
    parent.registerMethod("dispose", this);
    parent.registerMethod("pre", this);

    // setup parity
    if (parity == 'O') {
      parity = SerialPort.PARITY_ODD;
    } else if (parity == 'E') {
      parity = SerialPort.PARITY_EVEN;
    } else if (parity == 'M') {
      parity = SerialPort.PARITY_MARK;
    } else if (parity == 'S') {
      parity = SerialPort.PARITY_SPACE;
    } else {
      parity = SerialPort.PARITY_NONE;
    }

    // setup stop bits
    int stopBitsIdx = SerialPort.STOPBITS_1;
    if (stopBits == 1.5f) {
      stopBitsIdx = SerialPort.STOPBITS_1_5;
    } else if (stopBits == 2) {
      stopBitsIdx = SerialPort.STOPBITS_2;
    }

    port = new SerialPort(portName);
    try {
      // the native open() call is not using O_NONBLOCK, so this might block for certain operations
      // (see write())
      port.openPort();
      port.setParams(baudRate, dataBits, stopBitsIdx, parity);
      // we could register more events here
      port.addEventListener(this, SerialPort.MASK_RXCHAR);
    } catch (SerialPortException e) {
      // this used to be a RuntimeException before, so stick with it
      throw new RuntimeException(
          "Error opening serial port " + e.getPortName() + ": " + e.getExceptionType());
    }

    serialEventMethod = findCallback("serialEvent");
    serialAvailableMethod = findCallback("serialAvailable");
  }