Class UsbSerialPort

android/src/UsbSerialPort.java:37–199

@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)
public final class UsbSerialPort
  implements AndroidPort, UsbSerialInterface.UsbReadCallback
{
  private final UsbSerialHelper.UsbDeviceInterface parent;
  private UsbDeviceConnection connection;
  private UsbSerialDevice serialDevice;
  private PortListener portListener;
  private InputListener inputListener;
  private int baudRate;
  private int state = STATE_LIMBO;
  private final SafeDestruct safeDestruct = new SafeDestruct();

  public UsbSerialPort(UsbSerialHelper.UsbDeviceInterface parent, int baud) {
    this.parent = parent;
    this.baudRate = baud;
  }

  public synchronized boolean isOpen() {
    return serialDevice != null;
  }

  public synchronized void open(UsbManager manager, UsbDevice device, int iface) {
    connection = manager.openDevice(device);
    if (connection == null) {
      setState(STATE_FAILED);
      return;
    }

    serialDevice = UsbSerialDevice.createUsbSerialDevice(device, connection, iface);
    if (serialDevice == null) {
      setState(STATE_FAILED);
      return;
    }

    if (!serialDevice.open()) {
      serialDevice = null;
      setState(STATE_FAILED);
      return;
    }

    serialDevice.setBaudRate(getBaudRate());
    serialDevice.setDataBits(UsbSerialInterface.DATA_BITS_8);
    serialDevice.setStopBits(UsbSerialInterface.STOP_BITS_1);
    serialDevice.setParity(UsbSerialInterface.PARITY_NONE);
    serialDevice.setFlowControl(UsbSerialInterface.FLOW_CONTROL_OFF);
    serialDevice.read(this);

    setState(STATE_READY);
  }

  public synchronized void close() {
    parent.portClosed(this);

    safeDestruct.beginShutdown();

    if( serialDevice != null) {
      serialDevice.close();