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-rw-r--r--src/org/traccar/protocol/Gt06ProtocolEncoder.java64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/Gt06ProtocolEncoder.java b/src/org/traccar/protocol/Gt06ProtocolEncoder.java
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+++ b/src/org/traccar/protocol/Gt06ProtocolEncoder.java
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+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.traccar.BaseProtocolEncoder;
+import org.traccar.helper.Crc;
+import org.traccar.model.Command;
+
+public class Gt06ProtocolEncoder extends BaseProtocolEncoder {
+
+ @Override
+ protected Object encodeCommand(Command command) {
+
+ String content = "";
+ switch (command.getType()) {
+ case Command.TYPE_ENGINE_STOP:
+ content = "DYD#";
+ break;
+ case Command.TYPE_ENGINE_RESUME:
+ content = "HFYD#";
+ break;
+ }
+
+ int serverFlagBit = 0x00;
+ int commandLength = serverFlagBit + content.length();
+ int packetLength = 0x80 + content.length() + 2 + 2;
+
+ ChannelBuffer response = ChannelBuffers.directBuffer(10);
+ response.writeBytes(new byte[]{0x78, 0x78}); // Start Bit
+ response.writeByte(packetLength); // Packet Length
+ response.writeByte(0x80); // Protocol Number
+
+ // Information Content
+ response.writeByte(commandLength); // Length of command
+ response.writeByte(serverFlagBit); // Server Flag Bit
+ response.writeBytes(content.getBytes()); // Command Content
+ response.writeBytes(new byte[]{0x00, 0x02}); // Language
+
+ response.writeShort(1); // Information Serial Number
+
+ int crc = Crc.crc16Ccitt(response.toByteBuffer(2, response.writerIndex()));
+ response.writeShort(crc); // Error Check
+
+ response.writeBytes(new byte[] {0x0D, 0x0A}); // Stop Bit
+
+ return response;
+ }
+
+}