From b9445651c5b9803476d0f96702ff3a293a327e20 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Thu, 23 May 2024 17:27:49 -0700
Subject: Support LynkWorld driving alarms

---
 .../org/traccar/protocol/Gt06ProtocolDecoder.java  | 26 +++++++++++++---------
 .../traccar/protocol/Gt06ProtocolDecoderTest.java  |  6 +++++
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
index 6c0380278..71c37b27c 100644
--- a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -410,7 +410,8 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
         }
     }
 
-    private String decodeAlarm(short value) {
+    private String decodeAlarm(short value, String model) {
+        boolean modelLW = model != null && model.startsWith("LW");
         switch (value) {
             case 0x01:
                 return Position.ALARM_SOS;
@@ -427,7 +428,6 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                 return Position.ALARM_OVERSPEED;
             case 0x0E:
             case 0x0F:
-            case 0x19:
                 return Position.ALARM_LOW_BATTERY;
             case 0x11:
                 return Position.ALARM_POWER_OFF;
@@ -438,17 +438,21 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
             case 0x14:
                 return Position.ALARM_DOOR;
             case 0x18:
-                return Position.ALARM_REMOVING;
-            case 0x23:
-                return Position.ALARM_FALL_DOWN;
+                return modelLW ? Position.ALARM_ACCIDENT : Position.ALARM_REMOVING;
+            case 0x19:
+                return modelLW ? Position.ALARM_ACCELERATION : Position.ALARM_LOW_BATTERY;
+            case 0x1A:
             case 0x28:
                 return Position.ALARM_BRAKING;
-            case 0x29:
-                return Position.ALARM_ACCELERATION;
+            case 0x1B:
             case 0x2A:
             case 0x2B:
             case 0x2E:
                 return Position.ALARM_CORNERING;
+            case 0x23:
+                return Position.ALARM_FALL_DOWN;
+            case 0x29:
+                return Position.ALARM_ACCELERATION;
             case 0x2C:
                 return Position.ALARM_ACCIDENT;
             case 0x30:
@@ -831,7 +835,8 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                     int satellites = BitUtil.between(signal, 10, 15) + BitUtil.between(signal, 5, 10);
                     position.set(Position.KEY_SATELLITES, satellites);
                     position.set(Position.KEY_RSSI, BitUtil.to(signal, 5));
-                    position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
+                    position.set(Position.KEY_ALARM, decodeAlarm(
+                            buf.readUnsignedByte(), getDeviceModel(deviceSession)));
                     buf.readUnsignedByte(); // language
                     position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
                     buf.readUnsignedByte(); // working mode
@@ -842,7 +847,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                     position.set(Position.KEY_RSSI, buf.readUnsignedByte());
                     short alarmExtension = buf.readUnsignedByte();
                     if (variant != Variant.VXT01) {
-                        position.set(Position.KEY_ALARM, decodeAlarm(alarmExtension));
+                        position.set(Position.KEY_ALARM, decodeAlarm(alarmExtension, getDeviceModel(deviceSession)));
                     }
                 }
             }
@@ -881,7 +886,8 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                     decodeStatus(position, buf);
                     position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01);
                     position.set(Position.KEY_RSSI, buf.readUnsignedByte());
-                    position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
+                    position.set(Position.KEY_ALARM, decodeAlarm(
+                            buf.readUnsignedByte(), getDeviceModel(deviceSession)));
                     position.set("oil", buf.readUnsignedShort());
                     int temperature = buf.readUnsignedByte();
                     if (BitUtil.check(temperature, 7)) {
diff --git a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
index 04d7fafb3..05a33cc72 100644
--- a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
@@ -494,6 +494,12 @@ public class Gt06ProtocolDecoderTest extends ProtocolTest {
                 "78785195140a020c2914055D4A800209D9C014009300004556454e545f3335333337363131303032333139365f30303030303030305f323032305f31305f30325f31345f34315f32305f30352e6d70340004e3a60d0a"),
                 Position.KEY_ALARM, Position.ALARM_ACCIDENT);
 
+        decoder.setModelOverride("LW4G-4B");
+
+        verifyAttribute(decoder, binary(
+                "78782516180516150812c804b50ee80880e40805dcf909012e000000986633460604190106c393490d0a"),
+                Position.KEY_ALARM, Position.ALARM_ACCELERATION);
+
     }
 
 }
-- 
cgit v1.2.3