diff options
Diffstat (limited to 'src/org')
| -rw-r--r-- | src/org/traccar/protocol/Jt600ProtocolDecoder.java | 75 |
1 files changed, 55 insertions, 20 deletions
diff --git a/src/org/traccar/protocol/Jt600ProtocolDecoder.java b/src/org/traccar/protocol/Jt600ProtocolDecoder.java index fd2448c0d..0c235a4b5 100644 --- a/src/org/traccar/protocol/Jt600ProtocolDecoder.java +++ b/src/org/traccar/protocol/Jt600ProtocolDecoder.java @@ -201,24 +201,25 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder { private static final Pattern PATTERN_U01 = new PatternBuilder() .text("(") - .number("(d+),") // id - .number("Udd,") // type - .number("d+,").optional() // alarm - .number("(dd)(dd)(dd),") // date (ddmmyy) - .number("(dd)(dd)(dd),") // time - .expression("([TF]),") // validity - .number("(d+.d+),([NS]),") // latitude - .number("(d+.d+),([EW]),") // longitude - .number("(d+.?d*),") // speed - .number("(d+),") // course - .number("(d+),") // satellites - .number("(d+%),") // battery - .expression("([01]+),") // status - .number("(d+),") // cid - .number("(d+),") // lac - .number("(d+),") // gsm signal - .number("(d+),") // odometer - .number("(d+)") // index + .number("(d+),") // id + .number("(Udd),") // type + .number("d+,").optional() // alarm + .number("(dd)(dd)(dd),") // date (ddmmyy) + .number("(dd)(dd)(dd),") // time + .expression("([TF]),") // validity + .number("(d+.d+),([NS]),") // latitude + .number("(d+.d+),([EW]),") // longitude + .number("(d+.?d*),") // speed + .number("(d+),") // course + .number("(d+),") // satellites + .number("(d+%),") // battery + .expression("([01]+),") // status + .number("(d+),") // cid + .number("(d+),") // lac + .number("(d+),") // gsm signal + .number("(d+),") // odometer + .number("(d+),") // serial number + .expression("([0-9A-F][0-9A-F])").optional() // checksum .any() .compile(); @@ -234,6 +235,8 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder { return null; } + String messageType = parser.next(); + Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); @@ -256,11 +259,29 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder { position.set(Position.KEY_CID, parser.nextInt()); position.set(Position.KEY_LAC, parser.nextInt()); position.set(Position.KEY_GSM, parser.nextInt()); - position.set(Position.KEY_ODOMETER, parser.nextLong() * 1000); + position.set(Position.KEY_ODOMETER, parser.nextLong() * 100); position.set(Position.KEY_INDEX, parser.nextInt()); - return position; + switch (messageType) { + case "U01": + case "U02": + case "U03": + String checkSum = parser.next(); + int calculatedCheckSum = checkSum(sentence.substring(1, sentence.length() - checkSum.length() - 1)); + if (Integer.parseInt(checkSum, 16) == calculatedCheckSum) { + sendResponse(channel, "(S39)"); + return position; + } else { + return null; + } + case "U06": + sendResponse(channel, "(S20)"); + return position; + default: + return null; + } } + @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { @@ -282,4 +303,18 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder { return null; } + private byte checkSum(String sentence) { + byte[] bytes = sentence.getBytes(StandardCharsets.US_ASCII); + byte sum = 0; + for (byte b : bytes) { + sum ^= b; + } + return sum; + } + + private void sendResponse(Channel channel, String response) { + if (channel != null) { + channel.write(ChannelBuffers.copiedBuffer(response, StandardCharsets.US_ASCII)); + } + } } |