From 59416923dcb3a756eaf532cc4259f2f6625c0762 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Sun, 31 Mar 2019 22:35:39 -0700 Subject: Convert project to gradle --- .../org/traccar/protocol/KhdProtocolEncoder.java | 67 ++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 src/main/java/org/traccar/protocol/KhdProtocolEncoder.java (limited to 'src/main/java/org/traccar/protocol/KhdProtocolEncoder.java') diff --git a/src/main/java/org/traccar/protocol/KhdProtocolEncoder.java b/src/main/java/org/traccar/protocol/KhdProtocolEncoder.java new file mode 100644 index 000000000..c66129283 --- /dev/null +++ b/src/main/java/org/traccar/protocol/KhdProtocolEncoder.java @@ -0,0 +1,67 @@ +/* + * Copyright 2015 - 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.buffer.ByteBuf; +import io.netty.buffer.Unpooled; +import org.traccar.BaseProtocolEncoder; +import org.traccar.helper.Checksum; +import org.traccar.model.Command; + +public class KhdProtocolEncoder extends BaseProtocolEncoder { + + public static final int MSG_CUT_OIL = 0x39; + public static final int MSG_RESUME_OIL = 0x38; + + private ByteBuf encodeCommand(int command, String uniqueId) { + + ByteBuf buf = Unpooled.buffer(); + + buf.writeByte(0x29); + buf.writeByte(0x29); + + buf.writeByte(command); + buf.writeShort(6); // size + + uniqueId = "00000000".concat(uniqueId); + uniqueId = uniqueId.substring(uniqueId.length() - 8); + buf.writeByte(Integer.parseInt(uniqueId.substring(0, 2))); + buf.writeByte(Integer.parseInt(uniqueId.substring(2, 4)) + 0x80); + buf.writeByte(Integer.parseInt(uniqueId.substring(4, 6)) + 0x80); + buf.writeByte(Integer.parseInt(uniqueId.substring(6, 8))); + + buf.writeByte(Checksum.xor(buf.nioBuffer())); + buf.writeByte(0x0D); // ending + + return buf; + } + + @Override + protected Object encodeCommand(Command command) { + + String uniqueId = getUniqueId(command.getDeviceId()); + + switch (command.getType()) { + case Command.TYPE_ENGINE_STOP: + return encodeCommand(MSG_CUT_OIL, uniqueId); + case Command.TYPE_ENGINE_RESUME: + return encodeCommand(MSG_RESUME_OIL, uniqueId); + default: + return null; + } + } + +} -- cgit v1.2.3