fixed line endings

This commit is contained in:
Fredrik Osterlind 2011-02-11 15:45:09 +01:00
parent 6cb60b3a34
commit 1c86e7d6f3
3 changed files with 304 additions and 304 deletions

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/* /*
* Copyright (c) 2007, Swedish Institute of Computer Science. * Copyright (c) 2007, Swedish Institute of Computer Science.
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors * 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software * may be used to endorse or promote products derived from this software
* without specific prior written permission. * without specific prior written permission.
* *
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* $Id: CRCCoder.java,v 1.1 2009/11/10 12:54:39 joxe Exp $ * $Id: CRCCoder.java,v 1.1 2009/11/10 12:54:39 joxe Exp $
*/ */
package se.sics.cooja.emulatedmote; package se.sics.cooja.emulatedmote;
import org.apache.log4j.Logger; import org.apache.log4j.Logger;
/** /**
* Ported from contiki-2.x/core/lib/crc16.[ch]. * Ported from contiki-2.x/core/lib/crc16.[ch].
* *
* @author Fredrik Osterlind * @author Fredrik Osterlind
*/ */
public class CRCCoder { public class CRCCoder {
private static Logger logger = Logger.getLogger(CRCCoder.class); private static Logger logger = Logger.getLogger(CRCCoder.class);
/** /**
* Updates given accumulated CRC16 checksum with given byte. * Updates given accumulated CRC16 checksum with given byte.
* *
* @param b Byte to be added to CRC * @param b Byte to be added to CRC
* @param acc Accumulated CRC that is to be updated * @param acc Accumulated CRC that is to be updated
* @return New accumulated CRC * @return New accumulated CRC
*/ */
public static short crc16Add(byte b, short acc) { public static short crc16Add(byte b, short acc) {
acc ^= 0xff & b; acc ^= 0xff & b;
acc = (short) ((0xff & (acc >> 8)) | (0xff00 & (acc << 8))); acc = (short) ((0xff & (acc >> 8)) | (0xff00 & (acc << 8)));
acc ^= 0xffff & ((acc & 0xff00) << 4); acc ^= 0xffff & ((acc & 0xff00) << 4);
acc ^= (0xffff & (0xff & (acc >> 8)) >> 4); acc ^= (0xffff & (0xff & (acc >> 8)) >> 4);
acc ^= 0xffff & ((0xffff & (acc & 0xff00)) >>> 5); acc ^= 0xffff & ((0xffff & (acc & 0xff00)) >>> 5);
return acc; return acc;
} }
} }

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/* /*
* Copyright (c) 2008, Swedish Institute of Computer Science. * Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors * 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software * may be used to endorse or promote products derived from this software
* without specific prior written permission. * without specific prior written permission.
* *
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* $Id: Radio802154PacketConverter.java,v 1.1 2009/11/10 12:54:39 joxe Exp $ * $Id: Radio802154PacketConverter.java,v 1.1 2009/11/10 12:54:39 joxe Exp $
*/ */
package se.sics.cooja.emulatedmote; package se.sics.cooja.emulatedmote;
import org.apache.log4j.Logger; import org.apache.log4j.Logger;
import se.sics.cooja.ConvertedRadioPacket; import se.sics.cooja.ConvertedRadioPacket;
import se.sics.cooja.RadioPacket; import se.sics.cooja.RadioPacket;
import se.sics.cooja.util.StringUtils; import se.sics.cooja.util.StringUtils;
/** /**
* Converts radio packets between X-MAC/802.15.4 nodes and COOJA. * Converts radio packets between X-MAC/802.15.4 nodes and COOJA.
* Handles radio driver specifics such as length header and CRC footer. * Handles radio driver specifics such as length header and CRC footer.
* *
* TODO: Needs to fix 802.15.4 parsing of packets to really convert them... * TODO: Needs to fix 802.15.4 parsing of packets to really convert them...
* @author Fredrik Osterlind, Joakim Eriksson * @author Fredrik Osterlind, Joakim Eriksson
*/ */
public class Radio802154PacketConverter { public class Radio802154PacketConverter {
private static Logger logger = Logger.getLogger(Radio802154PacketConverter.class); private static Logger logger = Logger.getLogger(Radio802154PacketConverter.class);
public static final boolean WITH_PREAMBLE = true; public static final boolean WITH_PREAMBLE = true;
public static final boolean WITH_SYNCH = true; public static final boolean WITH_SYNCH = true;
public static final boolean WITH_XMAC = true; public static final boolean WITH_XMAC = true;
public static final boolean WITH_CHECKSUM = false; public static final boolean WITH_CHECKSUM = false;
public static final boolean WITH_TIMESTAMP = true; public static final boolean WITH_TIMESTAMP = true;
public static final boolean WITH_FOOTER = true; public static final boolean WITH_FOOTER = true;
public static byte[] fromCoojaToCC2420(RadioPacket packet) { public static byte[] fromCoojaToCC2420(RadioPacket packet) {
byte cc2420Data[] = new byte[6+127]; byte cc2420Data[] = new byte[6+127];
int pos = 0; int pos = 0;
byte packetData[] = packet.getPacketData(); byte packetData[] = packet.getPacketData();
byte len; /* total packet minus preamble(4), synch(1) and length(1) */ byte len; /* total packet minus preamble(4), synch(1) and length(1) */
short accumulatedCRC = 0; short accumulatedCRC = 0;
/* 4 bytes preamble */ /* 4 bytes preamble */
if (WITH_PREAMBLE) { if (WITH_PREAMBLE) {
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
} }
/* 1 byte synch */ /* 1 byte synch */
if (WITH_SYNCH) { if (WITH_SYNCH) {
cc2420Data[pos++] = 0x7A; cc2420Data[pos++] = 0x7A;
} }
/* 1 byte length */ /* 1 byte length */
len = (byte) packetData.length; len = (byte) packetData.length;
if (WITH_XMAC) { if (WITH_XMAC) {
len += 6; len += 6;
} }
if (WITH_CHECKSUM) { if (WITH_CHECKSUM) {
len += 2; len += 2;
} }
if (WITH_TIMESTAMP) { if (WITH_TIMESTAMP) {
len += 3; len += 3;
} }
if (WITH_FOOTER) { if (WITH_FOOTER) {
len += 2; len += 2;
} }
cc2420Data[pos++] = len; cc2420Data[pos++] = len;
/* (TODO) 4 byte X-MAC */ /* (TODO) 4 byte X-MAC */
if (WITH_XMAC) { if (WITH_XMAC) {
cc2420Data[pos++] = 1; /* TYPE_DATA */ cc2420Data[pos++] = 1; /* TYPE_DATA */
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
cc2420Data[pos++] = 0; /* XXX sender: 0.0 */ cc2420Data[pos++] = 0; /* XXX sender: 0.0 */
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
cc2420Data[pos++] = 0; /* XXX receiver: 0.0 */ cc2420Data[pos++] = 0; /* XXX receiver: 0.0 */
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add((byte)0, accumulatedCRC);
} }
/* Payload */ /* Payload */
for (byte b : packetData) { for (byte b : packetData) {
accumulatedCRC = CRCCoder.crc16Add(b, accumulatedCRC); accumulatedCRC = CRCCoder.crc16Add(b, accumulatedCRC);
} }
System.arraycopy(packetData, 0, cc2420Data, pos, packetData.length); System.arraycopy(packetData, 0, cc2420Data, pos, packetData.length);
pos += packetData.length; pos += packetData.length;
/* 2 bytes checksum */ /* 2 bytes checksum */
if (WITH_CHECKSUM) { if (WITH_CHECKSUM) {
cc2420Data[pos++] = (byte) (accumulatedCRC & 0xff); cc2420Data[pos++] = (byte) (accumulatedCRC & 0xff);
cc2420Data[pos++] = (byte) ((accumulatedCRC >> 8) & 0xff); cc2420Data[pos++] = (byte) ((accumulatedCRC >> 8) & 0xff);
} }
/* (TODO) 3 bytes timestamp */ /* (TODO) 3 bytes timestamp */
if (WITH_TIMESTAMP) { if (WITH_TIMESTAMP) {
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
cc2420Data[pos++] = 0; cc2420Data[pos++] = 0;
} }
/* (TODO) 2 bytes footer */ /* (TODO) 2 bytes footer */
if (WITH_FOOTER) { if (WITH_FOOTER) {
cc2420Data[pos++] = 0; /* RSSI */ cc2420Data[pos++] = 0; /* RSSI */
cc2420Data[pos++] = (byte) 0x80; /* CRC and CORRELATION */ cc2420Data[pos++] = (byte) 0x80; /* CRC and CORRELATION */
} }
byte cc2420DataStripped[] = new byte[pos]; byte cc2420DataStripped[] = new byte[pos];
System.arraycopy(cc2420Data, 0, cc2420DataStripped, 0, pos); System.arraycopy(cc2420Data, 0, cc2420DataStripped, 0, pos);
/*logger.info("Data length: " + cc2420DataStripped.length);*/ /*logger.info("Data length: " + cc2420DataStripped.length);*/
return cc2420DataStripped; return cc2420DataStripped;
} }
public static ConvertedRadioPacket fromCC2420ToCooja(byte[] data) { public static ConvertedRadioPacket fromCC2420ToCooja(byte[] data) {
int pos = 0; int pos = 0;
int len; /* Payload */ int len; /* Payload */
int originalLen; int originalLen;
/* Use some CC2420/MAC specific field such as X-MAC response */ /* Use some CC2420/MAC specific field such as X-MAC response */
/* (IGNORED) 4 bytes preamble */ /* (IGNORED) 4 bytes preamble */
if (WITH_PREAMBLE) { if (WITH_PREAMBLE) {
pos += 4; pos += 4;
} }
/* (IGNORED) 1 byte synch */ /* (IGNORED) 1 byte synch */
if (WITH_SYNCH) { if (WITH_SYNCH) {
pos += 1; pos += 1;
} }
/* 1 byte length */ /* 1 byte length */
len = data[pos]; len = data[pos];
originalLen = len; originalLen = len;
pos += 1; pos += 1;
/* (IGNORED) 4 byte X-MAC */ /* (IGNORED) 4 byte X-MAC */
if (WITH_XMAC) { if (WITH_XMAC) {
pos += 6; pos += 6;
len -= 6; len -= 6;
} }
/* (IGNORED) 2 bytes checksum */ /* (IGNORED) 2 bytes checksum */
if (WITH_CHECKSUM) { if (WITH_CHECKSUM) {
len -= 2; len -= 2;
} }
/* (IGNORED) 3 bytes timestamp */ /* (IGNORED) 3 bytes timestamp */
if (WITH_TIMESTAMP) { if (WITH_TIMESTAMP) {
len -= 3; len -= 3;
} }
/* (IGNORED) 2 bytes footer */ /* (IGNORED) 2 bytes footer */
if (WITH_FOOTER) { if (WITH_FOOTER) {
len -= 2; len -= 2;
} }
/*logger.info("Payload pos: " + pos); /*logger.info("Payload pos: " + pos);
logger.info("Payload length: " + len);*/ logger.info("Payload length: " + len);*/
byte originalData[] = new byte[originalLen]; byte originalData[] = new byte[originalLen];
System.arraycopy(data, 6, originalData, 0, originalLen); System.arraycopy(data, 6, originalData, 0, originalLen);
if (len < 0) { if (len < 0) {
logger.warn("No cross-level conversion available: negative packet length"); logger.warn("No cross-level conversion available: negative packet length");
return new ConvertedRadioPacket(new byte[0], originalData); return new ConvertedRadioPacket(new byte[0], originalData);
} }
byte convertedData[] = new byte[len]; byte convertedData[] = new byte[len];
System.arraycopy(data, pos, convertedData, 0, len); System.arraycopy(data, pos, convertedData, 0, len);
return new ConvertedRadioPacket(convertedData, originalData); return new ConvertedRadioPacket(convertedData, originalData);
} }
} }

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/* /*
* Copyright (c) 2009, Swedish Institute of Computer Science. * Copyright (c) 2009, Swedish Institute of Computer Science.
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. * notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the * notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution. * documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors * 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software * may be used to endorse or promote products derived from this software
* without specific prior written permission. * without specific prior written permission.
* *
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* $Id: RadioByte.java,v 1.1 2009/11/10 12:54:39 joxe Exp $ * $Id: RadioByte.java,v 1.1 2009/11/10 12:54:39 joxe Exp $
*/ */
package se.sics.cooja.emulatedmote; package se.sics.cooja.emulatedmote;
import se.sics.cooja.RadioPacket; import se.sics.cooja.RadioPacket;
public class RadioByte implements RadioPacket { public class RadioByte implements RadioPacket {
private byte[] data = new byte[1]; private byte[] data = new byte[1];
public RadioByte(byte data) { public RadioByte(byte data) {
this.data[0] = data; this.data[0] = data;
} }
public RadioByte(int intData) { public RadioByte(int intData) {
this.data[0] = (byte) intData; this.data[0] = (byte) intData;
} }
public byte[] getPacketData() { public byte[] getPacketData() {
return data; return data;
} }
} }