package com.dy.common.mw.protocol.p206V1_0_0;
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import com.dy.common.util.ByteUtil;
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import com.dy.common.util.ByteUtilUnsigned;
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public class CommonV1_0_1 {
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/**
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* 检查头
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* @param bs 上行字节数组
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* @return true是,false否
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* @throws Exception 异常
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*/
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public Boolean isThisProtocolHead(byte[] bs) throws Exception{
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if(bs == null){
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return null ;
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}else if(bs.length >= (ProtocolConstantV206V1_0_0.ctrlIndex - 1)
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&& bs[0] == ProtocolConstantV206V1_0_0.P_Head_Byte
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&& bs[2] == ProtocolConstantV206V1_0_0.P_Head_Byte){
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//String vs = this.parseVersion(bs) ;
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//return vs.equals(ProtocolConstantV206V1_0_0.version);
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return true ;
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}else{
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return false ;
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}
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}
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/**
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* 检查头
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* @param bs 上行字节数组
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* @throws Exception 异常
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*/
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public void checkHead(byte[] bs) throws Exception{
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if(bs.length < 13 || bs[0] != ProtocolConstantV206V1_0_0.P_Head_Byte || bs[2] != ProtocolConstantV206V1_0_0.P_Head_Byte){
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throw new Exception("上行数据帧头不正确！") ;
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}
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}
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/**
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* 检查尾
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* @param bs 上行字节数组
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* @throws Exception 异常
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*/
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public void checkTail(byte[] bs) throws Exception{
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if(bs.length < 1 || bs[bs.length - 1] != ProtocolConstantV206V1_0_0.P_Tail_Byte){
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throw new Exception("上行数据尾不正确！") ;
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}
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}
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/**
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* 分析数据字节数
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* @param bs 上行字节数组
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* @return 数据长度
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* @throws Exception 异常
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*/
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public int parseDataLen(byte[] bs)throws Exception{
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return ByteUtilUnsigned.bytes2Short_BE(bs, ProtocolConstantV206V1_0_0.dataLenIndex) ;
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}
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/**
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* 分析IMEI号
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* @param bs 上行字节数组
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* @return 控制器地址
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* @throws Exception 异常
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*/
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public String parseRtuAddr(byte[] bs)throws Exception{
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String rtuAddrBCD = "" + ByteUtil.BCD2Long_BE(bs, ProtocolConstantV206V1_0_0.rtuAddr1Index_start, ProtocolConstantV206V1_0_0.rtuAddr1Index_end) ;
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String rtuAddrStr = "" + ByteUtilUnsigned.bytes2Short_BE(bs, ProtocolConstantV206V1_0_0.rtuAddr2Index_start) ;
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while(rtuAddrStr.length() < 6){
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rtuAddrStr = "0" + rtuAddrStr ;
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}
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return rtuAddrBCD + rtuAddrStr ;
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}
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/**
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* 分析功能码
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* @param bs 上行字节数组
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* @return 功能码
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*/
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public String parseCode(byte[] bs){
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return ByteUtil.bytes2Hex(bs, false, ProtocolConstantV206V1_0_0.codeIndex, 1) ;
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}
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/**
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* 校验和检查
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* @param bs 上行字节数组
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* @return 通过true,未通过false
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*/
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public boolean checkCrc(byte[] bs) {
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byte he = 0 ;
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for(int i = 0 ; i <= bs.length - 3 ; i++){
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he = (byte)(he + bs[i]) ;
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}
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return bs[bs.length - 2] == he ;
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}
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/**
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* 校验和检查
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* @param bs 上行字节数组
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* @return 通过null，未通过返回原因
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* @throws Exception 异常
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*/
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public String checkCrc_str(byte[] bs) throws Exception {
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byte[] he = new byte[1] ;
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for(int i = 0 ; i <= bs.length - 3 ; i++){
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he[0] = (byte)(he[0] + bs[i]) ;
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}
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short hes = ByteUtilUnsigned.byte2Byte(he, 0);
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short heOrg = ByteUtilUnsigned.byte2Byte(bs, bs.length - 2);
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if(hes == heOrg){
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return null ;
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}else{
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return "计算校验和是:" + hes + "，上传校验和是" + heOrg ;
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}
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}
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/*
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构造控制域
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D7 D6 D5～D4 D3～D0
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传输方向位 DIR 拆分标志位 DIV 帧计数位 FCB 功能码
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*/
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public byte createCtrl(byte funcCode){
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byte b = 0 ;
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b = (byte)(b | funcCode) ;
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//FCB == 3
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b = (byte)(b | (byte)60) ;
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//DIV = 0
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//DIR = 0
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return b ;
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}
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/*
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* 分析版本号
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* @param bs 上行字节数组
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* @return 版本号
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* @throws Exception 异常
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public String parseVersion(byte[] bs)throws Exception{
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short ver = ByteUtilUnsigned.byte2Byte(bs, ProtocolConstantV206V1_0_0.versionIndex) ;
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char[] cs = ("" + ver).toCharArray() ;
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StringBuilder vs = new StringBuilder() ;
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for(byte i = 0 ; i < cs.length; i++){
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if(i == 0){
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vs.append(cs[i]) ;
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}else{
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vs.append(".").append(cs[i]) ;
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}
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}
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return vs.toString() ;
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}
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*/
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}
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