package com.ld.igds.protocol.beibo.grain.builder;

import com.ld.igds.protocol.beibo.grain.util.BeiboGrainServerUtils;
import com.ld.igds.util.BytesUtil;

/**
 * 命令生成
 *
 * @author czt
 */
public class CommandBuild {

    private final static CommandBuild instance = new CommandBuild();

    private CommandBuild() {
    }

    public static CommandBuild getInstance() {
        return instance;
    }

    /**
     * 粮情采集命令
     *
     * @param grainAddr 粮情分机地址
     * @return
     */
    public static String getMsgCheck(String grainAddr) {

        StringBuffer sb = new StringBuffer();

        //起始符
        sb.append(BeiboGrainServerUtils.MSG_START);

        //实际分机地址
        int addr = Integer.parseInt(grainAddr);
        //粮情分机地址=拨码开关地址+40H
        addr += BeiboGrainServerUtils.BM;
        sb.append(BytesUtil.intToHexStr1(addr));

        //控制命令
        sb.append("82");

        //分机地址
        sb.append(BytesUtil.intToHexStr1(addr));

        //测温电缆层数，不知道电缆采集层数时，默认00或者FF
        sb.append("00");

        //结尾符
        sb.append(BeiboGrainServerUtils.MSG_END);

        return sb.toString();
    }
}