aboutsummaryrefslogtreecommitdiff
path: root/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java184
1 files changed, 184 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java b/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java
new file mode 100644
index 000000000..ba47699c3
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2018 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.Checksum;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class FreematicsProtocolDecoder extends BaseProtocolDecoder {
+
+ public FreematicsProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private Object decodeEvent(
+ Channel channel, SocketAddress remoteAddress, String sentence) {
+
+ DeviceSession deviceSession = null;
+ String event = null;
+ String time = null;
+
+ for (String pair : sentence.split(",")) {
+ String[] data = pair.split("=");
+ String key = data[0];
+ String value = data[1];
+ switch (key) {
+ case "ID":
+ case "VIN":
+ if (deviceSession == null) {
+ deviceSession = getDeviceSession(channel, remoteAddress, value);
+ }
+ break;
+ case "EV":
+ event = value;
+ break;
+ case "TS":
+ time = value;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (channel != null && deviceSession != null && event != null && time != null) {
+ String message = String.format("1#EV=%s,RX=1,TS=%s", event, time);
+ message += '*' + Checksum.sum(message);
+ channel.writeAndFlush(new NetworkMessage(message, remoteAddress));
+ }
+
+ return null;
+ }
+
+ private Object decodePosition(
+ Channel channel, SocketAddress remoteAddress, String sentence) throws Exception {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ List<Position> positions = new LinkedList<>();
+ Position position = null;
+ DateBuilder dateBuilder = null;
+
+ for (String pair : sentence.split(",")) {
+ String[] data = pair.split("[=:]");
+ int key = Integer.parseInt(data[0], 16);
+ String value = data[1];
+ switch (key) {
+ case 0x0:
+ if (position != null) {
+ position.setTime(dateBuilder.getDate());
+ positions.add(position);
+ }
+ position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+ position.setValid(true);
+ dateBuilder = new DateBuilder(new Date());
+ break;
+ case 0x11:
+ value = ("000000" + value).substring(value.length());
+ dateBuilder.setDateReverse(
+ Integer.parseInt(value.substring(0, 2)),
+ Integer.parseInt(value.substring(2, 4)),
+ Integer.parseInt(value.substring(4)));
+ break;
+ case 0x10:
+ value = ("00000000" + value).substring(value.length());
+ dateBuilder.setTime(
+ Integer.parseInt(value.substring(0, 2)),
+ Integer.parseInt(value.substring(2, 4)),
+ Integer.parseInt(value.substring(4, 6)),
+ Integer.parseInt(value.substring(6)) * 10);
+ break;
+ case 0xA:
+ position.setLatitude(Double.parseDouble(value));
+ break;
+ case 0xB:
+ position.setLongitude(Double.parseDouble(value));
+ break;
+ case 0xC:
+ position.setAltitude(Double.parseDouble(value));
+ break;
+ case 0xD:
+ position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(value)));
+ break;
+ case 0xE:
+ position.setCourse(Integer.parseInt(value));
+ break;
+ case 0xF:
+ position.set(Position.KEY_SATELLITES, Integer.parseInt(value));
+ break;
+ case 0x20:
+ position.set(Position.KEY_ACCELERATION, value);
+ break;
+ case 0x24:
+ position.set(Position.KEY_BATTERY, Integer.parseInt(value) * 0.01);
+ break;
+ case 0x81:
+ position.set(Position.KEY_RSSI, Integer.parseInt(value));
+ break;
+ case 0x82:
+ position.set(Position.KEY_DEVICE_TEMP, Integer.parseInt(value) * 0.1);
+ break;
+ default:
+ position.set(data[0], value);
+ break;
+ }
+ }
+
+ if (position != null) {
+ position.setTime(dateBuilder.getDate());
+ positions.add(position);
+ }
+
+ return positions;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ String sentence = (String) msg;
+ int startIndex = sentence.indexOf('#');
+ int endIndex = sentence.indexOf('*');
+
+ if (startIndex > 0 && endIndex > 0) {
+ sentence = sentence.substring(startIndex + 1, endIndex);
+
+ if (sentence.startsWith("EV")) {
+ return decodeEvent(channel, remoteAddress, sentence);
+ } else {
+ return decodePosition(channel, remoteAddress, sentence);
+ }
+ }
+
+ return null;
+ }
+
+}