1 /*
2 * Copyright © 2016 Greg Chabala
3 *
4 * This file is part of brick-control-lab.
5 *
6 * brick-control-lab is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * brick-control-lab is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with brick-control-lab. If not, see http://www.gnu.org/licenses/.
18 */
19 package org.chabala.brick.controllab;
20
21 /**
22 * Constants relating to the control lab communication protocol.
23 */
24 final class Protocol {
25 static final String HANDSHAKE_CHALLENGE = "p\0###Do you byte, when I knock?$$$";
26 static final String HANDSHAKE_RESPONSE = "###Just a bit off the block!$$$";
27
28 static final byte DISCONNECT = (byte) 0b01110000;
29
30 static final byte OUTPUT_OFF = (byte) 0b10010000;
31 static final byte OUTPUT_ON = (byte) 0b10010001;
32
33 static final byte STOP_DEPRESSED = (byte) 0x10;
34 static final byte STOP_RELEASED = (byte) 0x00;
35
36 static final int FRAME_SIZE = 19;
37
38 private Protocol() {
39 throw new UnsupportedOperationException();
40 }
41 }