package com.concentrator;
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import android.util.Log;
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import com.util.ComBase;
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import com.util.Crc16;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.Arrays;
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public class Concentrator_Cmd
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{
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private final String TAG = "Concentrator_Cmd";
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public final int BYTE_LEN = 4;
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public int ADDR = 0xFF; //通讯地址
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public int ByteCount; //数据区字节数量
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public int CMD; //功能码
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public int RES_Index; //数据地址
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private int CRC;
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public void makeCmd(int addr, int cmd,int RES_Index)
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{
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this.ADDR = addr;
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this.CMD = cmd;
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this.RES_Index = RES_Index;
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}
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public boolean putByteBuffer(final ByteBuffer bf)
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{
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if(bf.limit() < BYTE_LEN)
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return false;
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ByteBuffer tmpbuf = bf;
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int crc0 = tmpbuf.getShort(bf.limit()-2) & 0xFFFF;
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int crc1 = Crc16.CalCRC16(tmpbuf, bf.limit()-2) & 0xFFFF;
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if(crc0 != crc1) {
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System.err.println("CRC error "+crc0+"==="+crc1);
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return false;
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}
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tmpbuf.position(0);
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ADDR = ComBase.changeByteToInt(tmpbuf.get());
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CMD = ComBase.changeByteToInt(tmpbuf.get());
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if(Concentrator_ComBase.CMD_MODEBUS_READCMD == CMD){
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//读取数据
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ByteCount = ComBase.changeByteToInt(tmpbuf.get());
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}else{
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//写入数据
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RES_Index = ComBase.changeShortToInt(tmpbuf.getShort());
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int returnvalue = ComBase.changeShortToInt(tmpbuf.getShort());
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if(Concentrator_ComBase.CMD_CONTROL_VALUE == returnvalue){
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return true;
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}else{
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switch (returnvalue){
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case 0x0000:
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Log.e(TAG, "putByteBuffer: 操作失败" );break;
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case 0x0002:
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Log.e(TAG, "putByteBuffer: 数据地址错误" );break;
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}
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return false;
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}
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}
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tmpbuf.compact();
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tmpbuf.flip();
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return true;
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}
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public ByteBuffer getByteBuffer()
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{
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ByteBuffer bytebuffer = ByteBuffer.allocate(BYTE_LEN);
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bytebuffer.order(ByteOrder.BIG_ENDIAN);
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bytebuffer.put(ComBase.changeIntToByte(ADDR));
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bytebuffer.put(ComBase.changeIntToByte(CMD));
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bytebuffer.putShort(ComBase.changeIntToShort(RES_Index));
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bytebuffer.flip();
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return bytebuffer;
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}
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/**
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* 获取读取汇集参数时的数据
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* @return
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*/
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public ByteBuffer getReadByteBuffer(int reg_count){
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ByteBuffer buffer = ByteBuffer.allocate(2);
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buffer.order(ByteOrder.BIG_ENDIAN);
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buffer.putShort(ComBase.changeIntToShort(reg_count));
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buffer.flip();
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return buffer;
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}
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@Override
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public String toString() {
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return "TmpSensor_Cmd [BYTE_LEN=" + BYTE_LEN + ", ADDR=" + ADDR + ", ByteCount=" + ByteCount + ", CMD=" + CMD
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+ ", RES_Index=" + RES_Index + ", CRC=" + CRC + "]";
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}
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}
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/***************************************************************************************
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******************************** end of file (FBS_Cmd) *********************************
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***************************************************************************************/
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