From d47da84d3bfea34266ba83ea8595a7ad9a7031b9 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Wed, 19 Jun 2024 11:44:15 -0700
Subject: Decode DMT alarm events

---
 .../org/traccar/protocol/DmtProtocolDecoder.java   | 31 ++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

(limited to 'src/main/java/org/traccar/protocol/DmtProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java b/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java
index 320aa1b60..f8295543f 100644
--- a/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/DmtProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 - 2021 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 - 2024 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -151,7 +151,9 @@ public class DmtProtocolDecoder extends BaseProtocolDecoder {
 
             position.setDeviceTime(new Date(1356998400000L + buf.readUnsignedIntLE() * 1000)); // since 1 Jan 2013
 
-            position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+            int event = buf.readUnsignedByte();
+            position.set(Position.KEY_ALARM, decodeAlarm(event));
+            position.set(Position.KEY_EVENT, event);
 
             while (buf.readerIndex() < recordEnd) {
 
@@ -246,6 +248,31 @@ public class DmtProtocolDecoder extends BaseProtocolDecoder {
         return positions;
     }
 
+    private String decodeAlarm(int value) {
+        switch (value) {
+            case 12:
+                return Position.ALARM_BRAKING;
+            case 13:
+                return Position.ALARM_ACCELERATION;
+            case 14:
+                return Position.ALARM_CORNERING;
+            case 18:
+                return Position.ALARM_OVERSPEED;
+            case 20:
+                return Position.ALARM_TOW;
+            case 23:
+                return Position.ALARM_ACCIDENT;
+            case 29:
+                return Position.ALARM_TAMPERING;
+            case 44:
+                return Position.ALARM_GEOFENCE_ENTER;
+            case 45:
+                return Position.ALARM_GEOFENCE_EXIT;
+            default:
+                return null;
+        }
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
-- 
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