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whyclj

2020-07-21 04adabbbf34ffdc4b1d49cb5fbc1d57550f98b97

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package com.modbus.util; 
 
import java.nio.ByteBuffer; 
import java.nio.ByteOrder; 
 
import com.base.ComBase; 
 
 
public class BaseData { 
    public static final int ReadByteCount = 12; 
     
    public int transsend;                //·¢ËÍÊÂÎñ±êʶ·û 
    public int transreceive;            //½ÓÊÕÊÂÎñ±êʶ·û 
    public int protocolident;            //ЭÒé±êʶ·û 
    public int datacount;                //Êý¾Ý³¤¶È[±¾×Ö½ÚÏÂÒ»¸öµ½×îºó] 
    public int unitident = 0x02;        //µ¥Ôª±êʶ·û[µ±Ç°µ¥Ôª¹Ì¶¨Îª2] 
    public int funcode;                    //¹¦ÄÜÂë 
    public int addrstart;                //¼Ä´æÆ÷ÆðʼµØÖ· 
    public int regcount;                //¼Ä´æÆ÷ÊýÁ¿ 
    public int bytecount;                //Êý¾ÝÇø×Ö½ÚÊýÁ¿ 
    public byte[] data;                    //Êý¾ÝÇøÊý¾Ý 
     
    public BaseData() { 
         
    } 
     
    public BaseData(int cmd_code,int regstart,int regcount) { 
        this.funcode = cmd_code; 
        this.addrstart = regstart; 
        this.regcount = regcount; 
    } 
     
    /** 
     * ¹¹Ôì·¢ËÍÊý¾Ý 
     * @param cmd_code        ÃüÁîÂë 
     * @param addrstart        ¼Ä´æÆ÷ÆðʼµØÖ· 
     * @param regcount        ¼Ä´æÆ÷ÊýÁ¿ 
     * @return 
     */ 
    public byte[] createReadData() { 
        ByteBuffer bf = ByteBuffer.allocate(ReadByteCount); 
        bf.order(ByteOrder.BIG_ENDIAN); 
        bf.putShort(ComBase.changeIntToShort(addrstart));        //½ÓÊÕ±êʶ          ½«¼Ä´æÆ÷ÆðʼµØÖ··ÅÔÚ±êʶÖÐ[2¸ö×Ö½Ú] 
        bf.putShort(ComBase.changeIntToShort(0x0000));            //ЭÒé±êʶ·û 
        bf.putShort(ComBase.changeIntToShort(0x0006));            //ÏÂÃæ×Ö½Ú³¤¶È 
        bf.put(ComBase.changeIntToByte(unitident));                //µ¥Ôª±êʶ·û(É豸ID) 
        bf.put(ComBase.changeIntToByte(funcode));                //¹¦ÄÜÂë 
        bf.putShort(ComBase.changeIntToShort(addrstart));        //¼Ä´æÆ÷ÆðʼµØÖ· 
        bf.putShort(ComBase.changeIntToShort(regcount)); 
        bf.flip(); 
        byte[] databyte = new byte[ReadByteCount]; 
        bf.get(databyte); 
        return databyte; 
    } 
     
    /** 
     *     ¹¹Ôì¶àµãдÈëÊý¾Ý 
     * @param value 
     * @return 
     */ 
    public byte[] createWiriteData(byte[] data) { 
        ByteBuffer bf = ByteBuffer.allocate(ReadByteCount+regcount*2+1); 
        bf.order(ByteOrder.BIG_ENDIAN); 
        bf.putShort(ComBase.changeIntToShort(addrstart));        //½ÓÊÕ±êʶ          ½«¼Ä´æÆ÷ÆðʼµØÖ··ÅÔÚ±êʶÖÐ[2¸ö×Ö½Ú] 
        bf.putShort(ComBase.changeIntToShort(0x0000));            //ЭÒé±êʶ·û 
        bf.putShort(ComBase.changeIntToShort(7+regcount*2));    //ÏÂÃæ×Ö½Ú³¤¶È 
        bf.put(ComBase.changeIntToByte(unitident));                //µ¥Ôª±êʶ·û(É豸ID) 
        bf.put(ComBase.changeIntToByte(funcode));                //¹¦ÄÜÂë 
        bf.putShort(ComBase.changeIntToShort(addrstart));        //¼Ä´æÆ÷ÆðʼµØÖ· 
        bf.putShort(ComBase.changeIntToShort(regcount));         //¼Ä´æÆ÷ÊýÁ¿ 
        bf.put(ComBase.changeIntToByte(regcount*2));            //д×Ö½ÚÊýÁ¿ 
        bf.put(data);                                            //Ä¿±êÖµ 
        bf.flip(); 
        byte[] databyte = new byte[ReadByteCount]; 
        bf.get(databyte); 
        return databyte; 
    } 
     
    /** 
     * ¹¹Ôì°´Å¥¿ØÖÆÊý¾Ý 
     * @return 
     */ 
    public static byte[] createButtonByte(int value) { 
        ByteBuffer bf = ByteBuffer.allocate(2); 
        bf.order(ByteOrder.BIG_ENDIAN); 
        bf.putShort(ComBase.changeIntToShort(value)); 
        bf.flip(); 
        byte[] b = new byte[2]; 
        bf.get(b); 
        return b; 
    } 
     
    /** 
     * ¹¹ÔìдÈë¶à¸ö¼Ä´æÆ÷Êý¾Ý 
     * @param value 
     * @return 
     */ 
    public static byte[] createFloatByte(float value) { 
        ByteBuffer bf = ByteBuffer.allocate(4); 
        bf.order(ByteOrder.BIG_ENDIAN); 
        bf.putFloat(value); 
        bf.flip(); 
        byte[] b = new byte[4]; 
        bf.get(b); 
        return b; 
    } 
     
    /** 
     *  
     * @return 
     */ 
    public boolean putByteBuffer(ByteBuffer bf) { 
        ByteBuffer tmpbuf = bf; 
        if(tmpbuf.limit() < 8) { 
            return false; 
        } 
        tmpbuf.position(0); 
        transsend = ComBase.changeShortToInt(bf.getShort()); 
        protocolident = ComBase.changeShortToInt(bf.getShort()); 
        datacount = ComBase.changeShortToInt(bf.getShort()); 
        unitident = ComBase.changeByteToInt(bf.get()); 
        if(unitident != 0x02) { 
            return false; 
        } 
        funcode = ComBase.changeByteToInt(bf.get()); 
        return true; 
    } 
     
     
}