1 files changed, 93 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/T622IridiumProtocolDecoder.java b/src/main/java/org/traccar/protocol/T622IridiumProtocolDecoder.java
new file mode 100644
index 000000000..6a81a452a
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/T622IridiumProtocolDecoder.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2023 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.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.Protocol;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+import org.traccar.session.DeviceSession;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+public class T622IridiumProtocolDecoder extends BaseProtocolDecoder {
+
+    public T622IridiumProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        buf.readUnsignedByte(); // protocol revision
+        buf.readUnsignedShort(); // length
+        buf.readUnsignedByte(); // header indicator
+        buf.readUnsignedShort(); // header length
+        buf.readUnsignedInt(); // reference
+
+        String imei = buf.readCharSequence(15, StandardCharsets.US_ASCII).toString();
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        buf.readUnsignedByte(); // session status
+        buf.readUnsignedShort(); // originator index
+        buf.readUnsignedShort(); // transfer index
+        buf.readUnsignedInt(); // session time
+        buf.readUnsignedByte(); // payload indicator
+        buf.readUnsignedShort(); // payload length
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+
+        position.setLatitude(buf.readIntLE() / 1000000.0);
+        position.setLongitude(buf.readIntLE() / 1000000.0);
+        position.setTime(new Date((buf.readUnsignedIntLE() + 946713600) * 1000));
+        position.setValid(buf.readUnsignedByte() > 0);
+
+        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+        position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+
+        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
+        position.setCourse(buf.readUnsignedShortLE());
+
+        position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
+
+        position.setAltitude(buf.readShortLE());
+
+        position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+        position.set(Position.KEY_HOURS, buf.readUnsignedIntLE() * 1000);
+        position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());
+        position.set(Position.KEY_INPUT, buf.readUnsignedByte());
+        position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
+        position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01);
+
+        buf.readUnsignedByte(); // geofence
+
+        return position;
+    }
+
+}