using Bro.Common.Helper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using static Bro.Common.Helper.EnumHelper;

namespace Bro.Common.Model
{
    #region DataFrame
    public interface IModbusDataFrame
    {
        ModbusOrder Order { get; set; }

        int Address { get; set; }
        int Length { get; set; }
        List<int> OpValue { get; set; }
        byte[] Frame { get; set; }

        string GetFrameString();
    }

    public class ModbusDataFrame_Send : IModbusDataFrame
    {
        public ModbusOrder Order { get; set; }

        private int address = -1;
        public int Address
        {
            get
            {
                return address;
            }
            set
            {
                if (value != address)
                {
                    address = value;
                    SetFrame();
                }
            }
        }

        private int length = -1;
        public int Length
        {
            get
            {
                return length;
            }
            set
            {
                if (value != length)
                {
                    length = value;
                    SetFrame();
                }
            }
        }

        private List<int> sendValue;
        public List<int> OpValue
        {
            get
            {
                return sendValue;
            }
            set
            {
                if (value != sendValue)
                {
                    sendValue = value;
                    SetFrame();
                }
            }
        }

        public byte[] Frame { get; set; }

        public ModbusDataFrame_Send() { }

        public ModbusDataFrame_Send(ModbusOrder order, int address, int length, List<int> value)
        {
            Order = order;
            Address = address;
            Length = length;
            OpValue = value;
        }

        public void SetFrame(bool enforce = false)
        {
            if (enforce || (Address != -1 && Length != -1 && OpValue != null))
            {
                FrameAttribue attr = Order.GetType().GetField(Order.ToString()).GetCustomAttribute<FrameAttribue>();
                if (attr != null)
                {
                    Frame = attr.GetSendFrame(Address, Length, OpValue);
                }
            }
        }

        public string GetFrameString()
        {
            return string.Format("{0}\tAddr:{1}\tLength:{2}\tData:{3}", Order.ToString(), Address, Length, string.Join(",", OpValue ?? new List<int>()));
        }
    }

    public class ModbusDataFrame_Receive : IModbusDataFrame
    {
        //private int address = -1;
        public int Address { get; set; }
        //{
        //    get
        //    {
        //        if (address == -1)
        //        {
        //            byte[] addressBytes = new byte[2];
        //            Array.Copy(Frame, 1, addressBytes, 0, 2);

        //            address = addressBytes.BytesToInt();
        //        }

        //        return address;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        private byte[] frame = null;
        public byte[] Frame
        {
            get
            {
                return frame;
            }
            set
            {
                if (value != null)
                {
                    frame = value;
                    AnalyzeReceivedData();
                }
            }
        }

        //private int length = 0;
        public int Length { get; set; }
        //{
        //    get
        //    {
        //        if (length == 0)
        //        {

        //        }

        //        return length;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        //private ModbusOrder order = ModbusOrder.Read_Coil;
        public ModbusOrder Order { get; set; }

        //private List<int> opValue;
        public List<int> OpValue { get; set; }
        //{
        //    get
        //    {
        //        if (opValue == -1)
        //        {

        //        }

        //        return opValue;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        public ModbusDataFrame_Receive() { }

        public ModbusDataFrame_Receive(byte[] datas)
        {
            Frame = datas;
        }

        public void AnalyzeReceivedData()
        {
            Order = (ModbusOrder)Frame[0];
            FrameAttribue attr = Order.GetType().GetField(Order.ToString()).GetCustomAttribute<FrameAttribue>();
            if (attr != null)
            {
                bool flag = attr.AnalyzeReceiveFrame(Frame, out List<int> valueList, out int addressResult, out int lengthResult);

                if (!flag)
                {
                    //throw new Common.Helper.UserException("Modbus返回数据解析失败");
                    throw new Exception("Modbus返回数据解析失败");
                }

                OpValue = valueList;
                Address = addressResult;
                Length = lengthResult;
            }
            else
            {
                //throw new Common.Helper.UserException("Modbus返回数据不在解析范围中");
                throw new Exception("Modbus返回数据不在解析范围中");
            }
        }

        public string GetFrameString()
        {
            return string.Format("{0}\tAddr:{1}\tLength:{2}\tData:{3}", Order.ToString(), Address, Length, string.Join(",", OpValue ?? new List<int>()));
        }
    }
    #endregion

    #region Tcp Frame
    public interface IModbusFrame_TCP
    {
        #region MBAP Head
        byte[] ModbusFlag { get; set; }

        int Head { get; set; }

        int Length { get; set; }

        int UnitNum { get; set; }
        #endregion

        #region Modbus Body
        IModbusDataFrame BodyFrame { get; set; }
        #endregion

        byte[] Frame { get; set; }

        string GetFrameString();
    }

    public class ModbusFrame_Send_TCP : IModbusFrame_TCP
    {
        #region MBAP Head

        public byte[] ModbusFlag { get; set; } = { 0x00, 0x00 };

        private int head = 0;
        public int Head
        {
            get
            {
                return head;
            }
            set
            {
                if (head != value)
                {
                    head = value;
                    SetFrame();
                }
            }
        }

        private int length = 0;
        public int Length
        {
            get
            {
                return length;
            }
            set
            {
                if (length != value)
                {
                    length = value;
                    SetFrame();
                }
            }
        }

        private int unitNum = 1;
        public int UnitNum
        {
            get
            {
                return unitNum;
            }
            set
            {
                if (unitNum != value)
                {
                    unitNum = value;
                    SetFrame();
                }
            }
        }
        #endregion

        #region Modbus Body
        private IModbusDataFrame bodyFrame = null;
        public IModbusDataFrame BodyFrame
        {
            get
            {
                return bodyFrame;
            }
            set
            {
                if (bodyFrame != value)
                {
                    bodyFrame = value;
                    SetFrame();
                }
            }
        }
        #endregion

        public byte[] Frame { get; set; }

        public void SetFrame()
        {
            if (BodyFrame == null || BodyFrame.Frame == null || BodyFrame.Frame.Length == 0)
            {
                return;
            }

            List<byte> all = new List<byte>();

            #region MBAP
            all.AddRange(Head.IntToBytes());
            all.AddRange(ModbusFlag);
            all.AddRange(new byte[] { 0x00, 0x00 }); //预设长度
            all.AddRange(UnitNum.IntToBytes(1));
            #endregion

            all.AddRange(BodyFrame.Frame);

            Length = BodyFrame.Frame.Length + 1;

            byte[] lengthBytes = Length.IntToBytes();
            all[2 + 2 + 0] = lengthBytes[0];
            all[2 + 2 + 1] = lengthBytes[1];

            Frame = all.ToArray();
        }

        public ModbusFrame_Send_TCP() { }

        public ModbusFrame_Send_TCP(ModbusOrder _order, int _address, int _length, List<int> valueList, int _headId = 1, int _unitNum = 1)
        {
            Head = _headId;
            UnitNum = _unitNum;

            BodyFrame = new ModbusDataFrame_Send(_order, _address, _length, valueList);
        }

        public ModbusFrame_Send_TCP(PLCItem item, int _unitNum = 1, int _headId = 1)
        {
            ModbusOrder order = ModbusOrder.Read_Coil;

            if (((int)item.PLCOpType & (int)PLCOpType.Read) == (int)PLCOpType.Read)
            {
                switch (item.Address[0])
                {
                    case '0':
                        order = ModbusOrder.Read_Coil;
                        break;
                    case '1':
                        order = ModbusOrder.Read_Input;
                        break;
                    case '3':
                        order = ModbusOrder.Read_InputRegister;
                        break;
                    case '4':
                        order = ModbusOrder.Read_HoldingRegister;
                        break;
                }
            }
            else
            {
                switch (item.Address[0])
                {
                    case '1':
                        if (item.ItemLength > 1)
                        {
                            order = ModbusOrder.Write_MultipleOutputs;
                        }
                        else
                        {
                            order = ModbusOrder.Write_SingleOutput;
                        }
                        break;
                    case '4':
                        if (item.ItemLength > 1)
                        {
                            order = ModbusOrder.Write_MultipleRegister;
                        }
                        else
                        {
                            order = ModbusOrder.Write_SingleRegister;
                        }
                        break;
                }
            }

            //int address = Convert.ToInt16(item.ADDRESS.Substring(1), 16);
            int address = int.Parse(item.Address.Substring(1));

            //address = address - 1; //PLC地址比Modbus地址少一位。例如PLC40001读取Modbus40000

            Head = _headId;
            UnitNum = _unitNum;

            //List<int> valueList = new List<int>();

            //if (!string.IsNullOrWhiteSpace(item.ItemValues))
            //{
            //    valueList = item.ItemValues.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries).ToList().ConvertAll(s => int.Parse(s)).ToList();
            //}

            BodyFrame = new ModbusDataFrame_Send(order, address, item.ItemLength, item.ItemValues);
        }

        public string GetFrameString()
        {
            string desc = string.Format("Send\t{0}\r\n", string.Join(" ", Array.ConvertAll(Frame, b => b.ToString("X2"))));
            desc += string.Format("{0}\r\n", BodyFrame?.GetFrameString());
            return desc;
        }
    }

    public class ModbusFrame_Receive_TCP : IModbusFrame_TCP
    {
        private byte[] frame = null;
        public byte[] Frame
        {
            get
            {
                return frame;
            }
            set
            {
                if (value != null)
                {
                    frame = value;
                    AnalyzeFrame();
                }
            }
        }

        //private int head = 0;
        public int Head { get; set; }
        //{
        //    get
        //    {
        //        if (head == 0)
        //        {
        //            byte[] headBytes = new byte[2];
        //            Array.Copy(Frame, 0, headBytes, 0, 2);

        //            head = headBytes.BytesToInt();
        //        }

        //        return head;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        //private int length = 0;
        public int Length { get; set; }
        //{
        //    get
        //    {
        //        if (length == 0)
        //        {
        //            byte[] lengthBytes = new byte[2];
        //            Array.Copy(Frame, 4, lengthBytes, 0, 2);

        //            length = lengthBytes.BytesToInt();
        //        }

        //        return length;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        public byte[] ModbusFlag { get; set; } = { 0x00, 0x00 };

        //private int unitNum = -1;
        public int UnitNum { get; set; }
        //{
        //    get
        //    {
        //        if (unitNum == -1)
        //        {
        //            unitNum = Frame[6];
        //        }

        //        return unitNum;
        //    }

        //    set
        //    {
        //        //throw new NotImplementedException();
        //    }
        //}

        //private IModbusDataFrame bodyFrame = null;
        public IModbusDataFrame BodyFrame { get; set; }

        public ModbusFrame_Receive_TCP() { }

        public ModbusFrame_Receive_TCP(byte[] datas)
        {
            Frame = datas;
        }

        public void AnalyzeFrame()
        {
            byte[] headBytes = new byte[2];
            Array.Copy(Frame, 0, headBytes, 0, 2);
            Head = headBytes.BytesToInt();

            byte[] lengthBytes = new byte[2];
            Array.Copy(Frame, 4, lengthBytes, 0, 2);
            Length = lengthBytes.BytesToInt();

            UnitNum = Frame[6];

            BodyFrame = new ModbusDataFrame_Receive(Frame.Skip(2 + 2 + 2 + 1).ToArray());
        }

        public string GetFrameString()
        {
            string desc = string.Format("Rec\t{0}\r\n", string.Join(" ", Array.ConvertAll(Frame, b => b.ToString("X2"))));
            desc += string.Format("{0}\r\n", BodyFrame?.GetFrameString());
            return desc;
        }
    }
    #endregion

    #region RTU Frame
    public interface IModbusFrame_RTU
    {
        int UnitNum { get; set; }

        IModbusDataFrame BodyFrame { get; set; }

        byte[] CRCBytes { get; set; }

        byte[] Frame { get; set; }

        string GetFrameString();
    }

    public class ModbusFrame_Send_RTU : IModbusFrame_RTU
    {
        private int unitNum = 1;
        public int UnitNum
        {
            get
            {
                return unitNum;
            }
            set
            {
                if (unitNum != value)
                {
                    unitNum = value;
                    SetFrame();
                }
            }
        }

        private IModbusDataFrame bodyFrame = null;
        public IModbusDataFrame BodyFrame
        {
            get
            {
                return bodyFrame;
            }
            set
            {
                if (bodyFrame != value)
                {
                    bodyFrame = value;
                    SetFrame();
                }
            }
        }

        public byte[] CRCBytes { get; set; }

        public byte[] Frame { get; set; }

        public void SetFrame()
        {
            if (BodyFrame == null || BodyFrame.Frame == null || BodyFrame.Frame.Length == 0)
            {
                return;
            }

            List<byte> all = new List<byte>();

            all.AddRange(UnitNum.IntToBytes(1));
            all.AddRange(BodyFrame.Frame);

            byte[] temp = all.ToArray();
            CRCBytes = CRCHelper.Crc16InBytes(temp, temp.Length);

            all.AddRange(CRCBytes);

            Frame = all.ToArray();
        }

        public ModbusFrame_Send_RTU() { }

        public ModbusFrame_Send_RTU(ModbusOrder _order, int _address, int _length, List<int> valueList, int _unitNum = 1)
        {
            UnitNum = _unitNum;
            BodyFrame = new ModbusDataFrame_Send(_order, _address, _length, valueList);
        }

        public string GetFrameString()
        {
            string desc = string.Format("Send\t{0}\r\n", string.Join(" ", Array.ConvertAll(Frame, b => b.ToString("X2"))));
            desc += string.Format("{0}\r\n", BodyFrame?.GetFrameString());
            return desc;
        }
    }

    public class ModbusFrame_Receive_RTU : IModbusFrame_RTU
    {
        private byte[] frame = null;
        public byte[] Frame
        {
            get
            {
                return frame;
            }
            set
            {
                if (value != null)
                {
                    frame = value;
                    AnalyzeFrame();
                }
            }
        }

        public byte[] ModbusFlag { get; set; } = { 0x00, 0x00 };

        public int UnitNum { get; set; }

        public byte[] CRCBytes { get; set; }

        public IModbusDataFrame BodyFrame { get; set; }

        public ModbusFrame_Receive_RTU() { }

        public ModbusFrame_Receive_RTU(byte[] datas)
        {
            Frame = datas;
        }

        public void AnalyzeFrame()
        {
            UnitNum = Frame[0];
            CRCBytes = Frame.Skip(Frame.Length - 2).ToArray();
            BodyFrame = new ModbusDataFrame_Receive(Frame.Skip(1).Take(Frame.Length - 1 - 2).ToArray());
        }

        public string GetFrameString()
        {
            string desc = string.Format("Rec\t{0}\r\n", string.Join(" ", Array.ConvertAll(Frame, b => b.ToString("X2"))));
            desc += string.Format("{0}\r\n", BodyFrame?.GetFrameString());
            return desc;
        }
    }
    #endregion

    public enum ModbusOrder
    {
        [FrameAttribue(0x01, true, false, true)]
        Read_Coil = 0x01,
        [FrameAttribue(0x02, false, true, true)]
        Read_Input = 0x02,
        [FrameAttribue(0x03, false, true, true)]
        Read_HoldingRegister = 0x03,
        [FrameAttribue(0x04, false, true, true)]
        Read_InputRegister = 0x04,
        [FrameAttribue(0x05, true, false, false)]
        Write_SingleOutput = 0x05,
        [FrameAttribue(0x06, false, false, false)]
        Write_SingleRegister = 0x06,
        [FrameAttribue(0x0f, true, true, false)]
        Write_MultipleOutputs = 0x0f,
        [FrameAttribue(0x10, false, true, false)]
        Write_MultipleRegister = 0x10,
    }

    public class FrameAttribue : Attribute
    {
        public byte Code { get; set; }
        public bool IsRead { get; set; }
        public bool IsMultiple { get; set; }
        public bool IsCoil { get; set; }

        public FrameAttribue(byte code, bool isCoil, bool isMultiple, bool isRead = true)
        {
            Code = code;
            IsRead = isRead;
            IsMultiple = isMultiple;
            IsCoil = isCoil;
        }

        public byte[] GetSendFrame(int address, int length, List<int> valueList)
        {
            List<byte> all = new List<byte>
            {
                Code
            };
            all.AddRange(address.IntToBytes());

            if (IsRead)
            {
                all.AddRange(length.IntToBytes());
            }
            else
            {
                if (!IsMultiple)
                {
                    if (IsCoil)
                    {
                        all.AddRange(valueList[0] == 1 ? new byte[] { 0xff, 0x00 } : new byte[] { 0x00, 0x00 });
                    }
                    else
                    {
                        all.AddRange(valueList[0].IntToBytes());
                    }
                }
                else
                {
                    all.AddRange(valueList.Count.IntToBytes(2));//寄存器数量

                    if (IsCoil)
                    {
                        int divide = valueList.Count / 8;
                        int remainder = length % 8;
                        if (remainder > 0)
                        {
                            divide++;
                        }
                        all.AddRange(divide.IntToBytes(1)); //字节长度

                        for (int i = 0; i < divide; i++)
                        {
                            string s = "";
                            for (int j = 0; j < 8; j++)
                            {
                                int index = j + i * 8;
                                if (valueList.Count > index)
                                {
                                    s = valueList[index].ToString() + s;
                                }
                                else
                                {
                                    s = "0" + s;
                                }
                            }

                            all.Add((byte)Convert.ToInt16(s, 2));
                        }
                    }
                    else
                    {
                        all.Add((byte)(valueList.Count * 2));//字节长度
                        valueList.ForEach(u =>
                        {
                            all.AddRange(u.IntToBytes());
                        });
                    }
                }
            }

            return all.ToArray();
        }

        public bool AnalyzeReceiveFrame(byte[] data, out List<int> opValue, out int address, out int length)
        {
            opValue = new List<int>();
            address = -1;
            length = 0;

            if (IsRead)
            {
                if (IsCoil)
                {
                    length = data[1];

                    for (int i = 0; i < length; i++)
                    {
                        int index = i + 2; //头两位是Code和Length

                        if (index > data.Length)
                        {
                            return false;
                        }

                        int value8 = data[index];

                        for (int j = 0; j < 8; j++)
                        {
                            opValue.Add((value8 >> j) & 0x01);
                        }
                    }
                }
                else
                {
                    length = data[1] / 2;

                    for (int i = 0; i < length; i++)
                    {
                        byte[] res = new byte[2];
                        Array.Copy(data, i * 2 + 2, res, 0, 2);

                        opValue.Add(res.BytesToInt());
                    }
                }
            }
            else
            {
                if (data.Length < 5)
                {
                    return false;
                }

                byte[] addbytes = new byte[2];
                Array.Copy(data, 1, addbytes, 0, 2);

                address = addbytes.BytesToInt();

                if (IsMultiple)
                {
                    byte[] writeLengthBytes = new byte[2];
                    Array.Copy(data, 3, writeLengthBytes, 0, 2);

                    length = writeLengthBytes.BytesToInt();
                }
                else
                {
                    byte[] writeValueBytes = new byte[2];
                    Array.Copy(data, 3, writeValueBytes, 0, 2);

                    opValue.Add(writeValueBytes.BytesToInt());
                }
            }

            return true;
        }
    }

    public class CRCHelper
    {
        private static readonly byte[] aucCRCHi = {
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
            0x00, 0xC1, 0x81, 0x40
        };
        private static readonly byte[] aucCRCLo = {
            0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,
            0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,
            0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,
            0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
            0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
            0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,
            0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,
            0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
            0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,
            0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
            0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,
            0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
            0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,
            0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA,
            0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
            0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
            0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,
            0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,
            0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,
            0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
            0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,
            0x41, 0x81, 0x80, 0x40
        };
        /// <summary>
        /// CRC效验
        /// </summary>
        /// <param name="pucFrame">效验数据</param>
        /// <param name="usLen">数据长度</param>
        /// <returns>效验结果</returns>
        public static int Crc16(byte[] pucFrame, int usLen)
        {
            int i = 0;
            byte ucCRCHi = 0xFF;
            byte ucCRCLo = 0xFF;
            while (usLen-- > 0)
            {
                ushort iIndex = (UInt16)(ucCRCLo ^ pucFrame[i++]);
                ucCRCLo = (byte)(ucCRCHi ^ aucCRCHi[iIndex]);
                ucCRCHi = aucCRCLo[iIndex];
            }
            return (ucCRCHi << 8 | ucCRCLo);
        }

        public static byte[] Crc16InBytes(byte[] pucFrame, int usLen)
        {
            int i = 0;
            byte ucCRCHi = 0xFF;
            byte ucCRCLo = 0xFF;
            while (usLen-- > 0)
            {
                ushort iIndex = (UInt16)(ucCRCLo ^ pucFrame[i++]);
                ucCRCLo = (byte)(ucCRCHi ^ aucCRCHi[iIndex]);
                ucCRCHi = aucCRCLo[iIndex];
            }
            return new byte[2] { ucCRCLo, ucCRCHi };
        }
    }
}