@Override
protected Object decode(
final ChannelHandlerContext ctx, final Channel channel, final ChannelBuffer buffer)
throws Exception {
while (buffer.readable()) {
byte c = buffer.readByte();
// check if last character read was DLE
if (foundDLE) {
foundDLE = false;
if (c == DleStxEtxConstants.STX && !foundPacket) {
foundPacket = true;
} else if (c == DleStxEtxConstants.ETX && foundPacket) {
ChannelBuffer packetRead = packet;
resetDecodingState();
return packetRead;
} else if (c == DleStxEtxConstants.DLE && foundPacket) {
// Stuffed DLE found
packet.writeByte(DleStxEtxConstants.DLE);
} else {
if (log.isWarnEnabled()) {
log.warn(
"Incomplete packet received: {}",
StringUtils.toHexString(
packet.array(), packet.readerIndex(), packet.readableBytes()));
}
resetDecodingState();
}
} else {
if (c == DleStxEtxConstants.DLE) {
// log.trace("Plain DLE received");
foundDLE = true;
} else if (foundPacket) {
packet.writeByte(c);
}
}
}
// decoding is not yet complete, we'll need more bytes until we find DLE
// ETX
return null;
}
public static void main(String[] args) throws IOException {
Logging.setLoggingDefaults();
if (args.length > 1) {
log.info("Searching for {} device with MAC address: {}", args[0], args[1]);
MoteType type = MoteType.fromString(args[0]);
if (type == null) {
log.error("Unknown node type \"{}\" given.", args[0]);
System.exit(1);
}
Map<String, String> telosBReferenceToMACMap = null;
if (args.length == 3) {
telosBReferenceToMACMap = readTelosBReferenceToMACMap(args[2]);
log.info("Using Telos B USB chip ID to MAC mapping: {}", telosBReferenceToMACMap);
}
MoteList moteList = MoteListFactory.create(telosBReferenceToMACMap);
log.info("Found: {}", moteList.getMotePort(type, StringUtils.parseHexOrDecLong(args[1])));
} else if (args.length == 1) {
Map<String, String> telosBReferenceToMACMap = null;
if (args.length == 3) {
telosBReferenceToMACMap = readTelosBReferenceToMACMap(args[2]);
log.info("Using Telos B USB chip ID to MAC mapping: {}", telosBReferenceToMACMap);
}
log.info(
"Displaying all connected devices: \n{}",
MoteListFactory.create(telosBReferenceToMACMap).getMoteList());
} else {
log.info(
"Displaying all connected devices: \n{}", MoteListFactory.create(null).getMoteList());
}
}
