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A fork of the RXTX library with a focus on ease of use and embeddability in other libraries.
/*
* Copyright (C) 2010 Archie L. Cobbs. All rights reserved.
*
* $Id: RFC2217.java 29 2010-11-22 21:57:58Z archie.cobbs $
*/
package gnu.io.rfc2217;
/**
* RFC 2217 constants and utility methods.
*
* @see RFC 2217
*/
public final class RFC2217 {
// COM-PORT-OPTION telnet option
public static final int COM_PORT_OPTION = 44;
// COM-PORT-OPTION commands
public static final int SIGNATURE = 0;
public static final int SET_BAUDRATE = 1;
public static final int SET_DATASIZE = 2;
public static final int SET_PARITY = 3;
public static final int SET_STOPSIZE = 4;
public static final int SET_CONTROL = 5;
public static final int NOTIFY_LINESTATE = 6;
public static final int NOTIFY_MODEMSTATE = 7;
public static final int FLOWCONTROL_SUSPEND = 8;
public static final int FLOWCONTROL_RESUME = 9;
public static final int SET_LINESTATE_MASK = 10;
public static final int SET_MODEMSTATE_MASK = 11;
public static final int PURGE_DATA = 12;
public static final int SERVER_OFFSET = 100;
// SET_DATASIZE values
public static final int DATASIZE_REQUEST = 0;
public static final int DATASIZE_5 = 5;
public static final int DATASIZE_6 = 6;
public static final int DATASIZE_7 = 7;
public static final int DATASIZE_8 = 8;
// SET_PARITY values
public static final int PARITY_REQUEST = 0;
public static final int PARITY_NONE = 1;
public static final int PARITY_ODD = 2;
public static final int PARITY_EVEN = 3;
public static final int PARITY_MARK = 4;
public static final int PARITY_SPACE = 5;
// SET_STOPSIZE values
public static final int STOPSIZE_REQUEST = 0;
public static final int STOPSIZE_1 = 1;
public static final int STOPSIZE_2 = 2;
public static final int STOPSIZE_1_5 = 3;
// SET_CONTROL values
public static final int CONTROL_OUTBOUND_FLOW_REQUEST = 0;
public static final int CONTROL_OUTBOUND_FLOW_NONE = 1;
public static final int CONTROL_OUTBOUND_FLOW_XON_XOFF = 2;
public static final int CONTROL_OUTBOUND_FLOW_HARDWARE = 3;
public static final int CONTROL_BREAK_REQUEST = 4;
public static final int CONTROL_BREAK_ON = 5;
public static final int CONTROL_BREAK_OFF = 6;
public static final int CONTROL_DTR_REQUEST = 7;
public static final int CONTROL_DTR_ON = 8;
public static final int CONTROL_DTR_OFF = 9;
public static final int CONTROL_RTS_REQUEST = 10;
public static final int CONTROL_RTS_ON = 11;
public static final int CONTROL_RTS_OFF = 12;
public static final int CONTROL_INBOUND_FLOW_REQUEST = 13;
public static final int CONTROL_INBOUND_FLOW_NONE = 14;
public static final int CONTROL_INBOUND_FLOW_XON_XOFF = 15;
public static final int CONTROL_INBOUND_FLOW_HARDWARE = 16;
public static final int CONTROL_OUTBOUND_FLOW_DCD = 17;
public static final int CONTROL_INBOUND_FLOW_DTR = 18;
public static final int CONTROL_OUTBOUND_FLOW_DSR = 19;
// SET_LINESTATE_MASK bit values
public static final int LINESTATE_TIME_OUT = 0x80;
public static final int LINESTATE_TRANSFER_SHIFT_REGISTER_EMPTY = 0x40;
public static final int LINESTATE_TRANSFER_HOLDING_REGISTER_EMPTY = 0x20;
public static final int LINESTATE_BREAK_DETECT = 0x10;
public static final int LINESTATE_FRAMING_ERROR = 0x08;
public static final int LINESTATE_PARITY_ERROR = 0x04;
public static final int LINESTATE_OVERRUN_ERROR = 0x02;
public static final int LINESTATE_DATA_READY = 0x01;
// SET_MODEMSTATE_MASK bit values
public static final int MODEMSTATE_CARRIER_DETECT = 0x80;
public static final int MODEMSTATE_RING_INDICATOR = 0x40;
public static final int MODEMSTATE_DSR = 0x20;
public static final int MODEMSTATE_CTS = 0x10;
public static final int MODEMSTATE_DELTA_CARRIER_DETECT = 0x08;
public static final int MODEMSTATE_TRAILING_EDGE_RING_DETECTOR = 0x04;
public static final int MODEMSTATE_DELTA_DSR = 0x02;
public static final int MODEMSTATE_DELTA_CTS = 0x01;
// PURGE_DATA values
public static final int PURGE_DATA_RECEIVE_DATA_BUFFER = 0x01;
public static final int PURGE_DATA_TRANSMIT_DATA_BUFFER = 0x02;
public static final int PURGE_DATA_BOTH_DATA_BUFFERS = 0x03;
private RFC2217() {
}
/**
* Decode an RFC 2217 {@code COM-PORT-OPTION} command.
*
* IllegalArgumentException if the bytes are not a valid encoded RFC 2217 {@link #COM_PORT_OPTION}
*/
public static ComPortCommand decodeComPortCommand(int[] bytes) {
if (bytes.length < 2)
throw new IllegalArgumentException("length < 2");
if (bytes[0] != COM_PORT_OPTION)
throw new IllegalArgumentException("not a COM-PORT-OPTION (option = " + bytes[0] + ")");
switch (bytes[1]) {
case SIGNATURE:
case SIGNATURE + SERVER_OFFSET:
return new SignatureCommand(bytes);
case SET_BAUDRATE:
case SET_BAUDRATE + SERVER_OFFSET:
return new BaudRateCommand(bytes);
case SET_DATASIZE:
case SET_DATASIZE + SERVER_OFFSET:
return new DataSizeCommand(bytes);
case SET_PARITY:
case SET_PARITY + SERVER_OFFSET:
return new ParityCommand(bytes);
case SET_STOPSIZE:
case SET_STOPSIZE + SERVER_OFFSET:
return new StopSizeCommand(bytes);
case SET_CONTROL:
case SET_CONTROL + SERVER_OFFSET:
return new ControlCommand(bytes);
case NOTIFY_LINESTATE:
case NOTIFY_LINESTATE + SERVER_OFFSET:
return new NotifyLineStateCommand(bytes);
case NOTIFY_MODEMSTATE:
case NOTIFY_MODEMSTATE + SERVER_OFFSET:
return new NotifyModemStateCommand(bytes);
case FLOWCONTROL_SUSPEND:
case FLOWCONTROL_SUSPEND + SERVER_OFFSET:
return new FlowControlSuspendCommand(bytes);
case FLOWCONTROL_RESUME:
case FLOWCONTROL_RESUME + SERVER_OFFSET:
return new FlowControlResumeCommand(bytes);
case SET_LINESTATE_MASK:
case SET_LINESTATE_MASK + SERVER_OFFSET:
return new LineStateMaskCommand(bytes);
case SET_MODEMSTATE_MASK:
case SET_MODEMSTATE_MASK + SERVER_OFFSET:
return new ModemStateMaskCommand(bytes);
case PURGE_DATA:
case PURGE_DATA + SERVER_OFFSET:
return new PurgeDataCommand(bytes);
default:
throw new IllegalArgumentException("unrecognized COM-PORT-OPTION command " + bytes[1]);
}
}
}