From 0d2428ff629728822adf5839a312a5ad3896e5e4 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sat, 10 Aug 2013 23:59:42 +1200
Subject: Update jt600 decoder

---
 src/org/traccar/protocol/Jt600ProtocolDecoder.java | 63 ++++++++++++++--------
 1 file changed, 40 insertions(+), 23 deletions(-)

(limited to 'src/org/traccar/protocol')

diff --git a/src/org/traccar/protocol/Jt600ProtocolDecoder.java b/src/org/traccar/protocol/Jt600ProtocolDecoder.java
index 86711a644..f7eccbfb5 100644
--- a/src/org/traccar/protocol/Jt600ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Jt600ProtocolDecoder.java
@@ -27,6 +27,7 @@ import org.traccar.BaseProtocolDecoder;
 import org.traccar.ServerManager;
 import org.traccar.helper.ChannelBufferTools;
 import org.traccar.helper.Log;
+import org.traccar.model.ExtendedInfoFormatter;
 import org.traccar.model.Position;
 
 public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
@@ -38,6 +39,7 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
     private Position decodeNormalMessage(ChannelBuffer buf) throws Exception {
 
         Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("jt600");
 
         buf.readByte(); // header
 
@@ -50,19 +52,21 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
             //return null;
         }
 
-        buf.readByte(); // protocol version + data type
+        // Protocol and type
+        int version = ChannelBufferTools.readHexInteger(buf, 1);
+        int type = buf.readUnsignedByte() & 0xf;
 
         buf.readBytes(2); // length
 
         // Time
         Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
         time.clear();
-        time.set(Calendar.DAY_OF_MONTH, ChannelBufferTools.readHexInteger(buf, 2));
-        time.set(Calendar.MONTH, ChannelBufferTools.readHexInteger(buf, 2) - 1);
-        time.set(Calendar.YEAR, 2000 + ChannelBufferTools.readHexInteger(buf, 2));
-        time.set(Calendar.HOUR, ChannelBufferTools.readHexInteger(buf, 2));
-        time.set(Calendar.MINUTE, ChannelBufferTools.readHexInteger(buf, 2));
-        time.set(Calendar.SECOND, ChannelBufferTools.readHexInteger(buf, 2));
+        time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
+        time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
+        time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte());
+        time.set(Calendar.HOUR, buf.readUnsignedByte());
+        time.set(Calendar.MINUTE, buf.readUnsignedByte());
+        time.set(Calendar.SECOND, buf.readUnsignedByte());
         position.setTime(time.getTime());
 
         // Coordinates
@@ -84,32 +88,42 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
         position.setLongitude(longitude);
 
         // Speed
-        double speed = ChannelBufferTools.readHexInteger(buf, 2);
-        position.setSpeed(speed);
+        position.setSpeed((double) buf.readUnsignedByte());
 
         // Course
-        double course = buf.readUnsignedByte() * 2;
-        position.setCourse(course);
+        position.setCourse(buf.readUnsignedByte() * 2.0);
+        
+        if (version == 1) {
+            
+            extendedInfo.set("satellites", buf.readUnsignedByte());
 
-        buf.readByte(); // number of satellites
+            // Power
+            position.setPower((double) buf.readUnsignedByte());
 
-        // Course
-        double power = buf.readUnsignedByte();
-        position.setPower(power);
+            buf.readByte(); // other flags and sensors
+
+            // Altitude
+            position.setAltitude((double) buf.readUnsignedShort());
 
-        buf.readByte(); // other flags and sensors
+            extendedInfo.set("cell", buf.readUnsignedShort());
+            extendedInfo.set("lac", buf.readUnsignedShort());
+            extendedInfo.set("gsm", buf.readUnsignedByte());
 
-        // Altitude
-        double altitude = buf.readUnsignedShort();
-        position.setAltitude(altitude);
+        } else if (version == 2) {
 
-        buf.readUnsignedShort(); // cell id
-        buf.readUnsignedShort(); // lac
+            position.setAltitude(0.0);
 
-        buf.readUnsignedByte(); // gsm signal
+            int fuel = buf.readUnsignedByte() << 8;
 
-        buf.readUnsignedByte(); // message number
+            extendedInfo.set("status", buf.readUnsignedInt());
+            extendedInfo.set("milage", buf.readUnsignedInt());
 
+            fuel += buf.readUnsignedByte();
+            extendedInfo.set("fuel", fuel);
+
+        }
+        
+        position.setExtendedInfo(extendedInfo.toString());
         return position;
     }
 
@@ -144,6 +158,8 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
 
         // Create new position
         Position position = new Position();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("jt600");
+        extendedInfo.set("alert", "true");
         Integer index = 1;
 
         // Get device by identifier
@@ -190,6 +206,7 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
         // Power
         position.setPower(Double.valueOf(parser.group(index++)));
 
+        position.setExtendedInfo(extendedInfo.toString());
         return position;
     }
 
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