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using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace KHModbus
{
class SerialConnectionSingleton
{
private static SerialConnectionSingleton SerialConnection;
public object lockSend = new object();
private SerialPort mSerialPort;
List<byte> _readPacket;
ManualResetEvent _eventReset = new ManualResetEvent(false);
int responseLength;
bool isWatingResponse;
public static SerialConnectionSingleton Instance()
{
if (SerialConnection == null)
{
SerialConnection = new SerialConnectionSingleton();
}
return SerialConnection;
}
public void InitialModBus()
{
mSerialPort = new SerialPort();
mSerialPort.PortName = "COM1";
mSerialPort.BaudRate = 9600;
mSerialPort.Parity = Parity.None;
mSerialPort.StopBits = StopBits.One;
mSerialPort.DataBits = 8;
//_serialPort.ReadTimeout = 500;
SlaveNo = 1;
responseLength = 0;
isWatingResponse = false;
_readPacket = new List<byte>();
mSerialPort.DataReceived += DataReceived;
}
private void DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (isWatingResponse)
{
Thread.Sleep(100);
SerialPort port = (SerialPort)sender;
// 현재까지 도착한 데이타 모두 읽기
byte[] vs = new byte[responseLength];
port.Read(vs, 0, responseLength);
_readPacket.AddRange(vs);
isWatingResponse = false;
_eventReset.Set();
}
}
public bool IsOpen()
{
try
{
if(mSerialPort.IsOpen)
{
return true;
}else
{
return Open();
}
}
catch (Exception ex)
{
return false;
}
}
public bool Open()
{
try
{
mSerialPort.Open();
return true;
}
catch (Exception ex)
{
return false;
}
}
public byte[] ReadBit(byte functionCode, ushort startAddress, ushort numberOfBit)
{
lock (lockSend)
{
byte[] byteStartAddress = BitConverter.GetBytes(startAddress);
byte[] byteLength = BitConverter.GetBytes(numberOfBit);
List<byte> packet = new List<byte>() { SlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] };
packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray())));
_readPacket.Clear();
// slave, functionCode, length, (byte high, byte low)n + crc1 + crc2
responseLength = 3 + numberOfBit / 8 + 2;
isWatingResponse = true;
mSerialPort.Write(packet.ToArray(), 0, packet.Count);
_eventReset.WaitOne(500);
_eventReset.Reset();
//byte[] readPacket = new byte[3 + length * 2 + 2];
if (_readPacket.Count == 0)
{
return new byte[1] { 0 };
}
var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray();
byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck));
if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1])
{
return new byte[1] { 0 };
}
else
{
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(_readPacket.Count - 1);
_readPacket.RemoveAt(_readPacket.Count - 1);
return _readPacket.ToArray();
}
}
}
public string[,] DataReadHolding(string Addr, string Length)
{
byte[] Data = SerialConnectionSingleton.Instance().ReadWords(1, 4, Convert.ToUInt16(Addr), Convert.ToUInt16(Length));
if (Data == null) return null;
ushort resultushort = 0;
if (Data.Length == 2)
{
resultushort = (ushort)((((byte)Data[0]) * 256) + ((byte)Data[1]));
}
string[,] result = new string[1, 2];
result[0, 0] = (Convert.ToInt32(Addr)).ToString();
result[0, 1] = resultushort.ToString();
return result;
}
public ushort ReadWords_To_ushort(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length)
{
var resultBit = SerialConnectionSingleton.Instance().ReadWords(SetSlaveNo, functionCode, startAddress, length);
ushort resultushort = 0;
if (resultBit.Length == 2)
{
resultushort = (ushort)((((byte)resultBit[0]) * 256) + ((byte)resultBit[1]));
}
return resultushort;
}
public int ReadWords_To_int(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length)
{
var resultBit = SerialConnectionSingleton.Instance().ReadWords(SetSlaveNo, functionCode, startAddress, length);
int resultushort = 0;
if (resultBit.Length == 4)
{
resultushort = (int)((((int)resultBit[0]) * (256 * 256 * 256)) + (((int)resultBit[1]) * 65536) + (((int)resultBit[2]) * 256) + ((int)resultBit[3]));
}
return resultushort;
}
public byte[] ReadWords(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length)
{
lock (lockSend)
{
byte[] byteStartAddress = BitConverter.GetBytes(startAddress);
byte[] byteLength = BitConverter.GetBytes(length);
List<byte> packet = new List<byte>() { SetSlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] };
packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray())));
_readPacket.Clear();
// slave, functionCode, length, (byte high, byte low)n + crc1 + crc2
responseLength = 3 + length * 2 + 2;
isWatingResponse = true;
mSerialPort.Write(packet.ToArray(), 0, packet.Count);
_eventReset.WaitOne(500);
_eventReset.Reset();
//byte[] readPacket = new byte[3 + length * 2 + 2];
if (_readPacket.Count == 0)
{
return new byte[1] { 0 };
}
var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray();
byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck));
if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1])
{
return new byte[1] { 0 };
}
else
{
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(0);
_readPacket.RemoveAt(_readPacket.Count - 1);
_readPacket.RemoveAt(_readPacket.Count - 1);
return _readPacket.ToArray();
}
}
}
//public byte[] ReadWords(byte functionCode, ushort startAddress, ushort length)
//{
// lock (lockSend)
// {
// byte[] byteStartAddress = BitConverter.GetBytes(startAddress);
// byte[] byteLength = BitConverter.GetBytes(length);
// List<byte> packet = new List<byte>() { SlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] };
// packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray())));
// _readPacket.Clear();
// // slave, functionCode, length, (byte high, byte low)n + crc1 + crc2
// responseLength = 3 + length * 2 + 2;
// isWatingResponse = true;
// mSerialPort.Write(packet.ToArray(), 0, packet.Count);
// _eventReset.WaitOne(500);
// _eventReset.Reset();
// //byte[] readPacket = new byte[3 + length * 2 + 2];
// if (_readPacket.Count == 0)
// {
// return new byte[1] { 0 };
// }
// var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray();
// byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck));
// if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1])
// {
// return new byte[1] { 0 };
// }
// else
// {
// _readPacket.RemoveAt(0);
// _readPacket.RemoveAt(0);
// _readPacket.RemoveAt(0);
// _readPacket.RemoveAt(_readPacket.Count - 1);
// _readPacket.RemoveAt(_readPacket.Count - 1);
// return _readPacket.ToArray();
// }
// }
//}
public UInt16 ComputeCrc(byte[] data)
{
ushort crc = 0xFFFF;
foreach (byte datum in data)
{
crc = (ushort)((crc >> 8) ^ CrcTable[(crc ^ datum) & 0xFF]);
}
return crc;
}
private readonly ushort[] CrcTable = {
0X0000, 0XC0C1, 0XC181, 0X0140, 0XC301, 0X03C0, 0X0280, 0XC241,
0XC601, 0X06C0, 0X0780, 0XC741, 0X0500, 0XC5C1, 0XC481, 0X0440,
0XCC01, 0X0CC0, 0X0D80, 0XCD41, 0X0F00, 0XCFC1, 0XCE81, 0X0E40,
0X0A00, 0XCAC1, 0XCB81, 0X0B40, 0XC901, 0X09C0, 0X0880, 0XC841,
0XD801, 0X18C0, 0X1980, 0XD941, 0X1B00, 0XDBC1, 0XDA81, 0X1A40,
0X1E00, 0XDEC1, 0XDF81, 0X1F40, 0XDD01, 0X1DC0, 0X1C80, 0XDC41,
0X1400, 0XD4C1, 0XD581, 0X1540, 0XD701, 0X17C0, 0X1680, 0XD641,
0XD201, 0X12C0, 0X1380, 0XD341, 0X1100, 0XD1C1, 0XD081, 0X1040,
0XF001, 0X30C0, 0X3180, 0XF141, 0X3300, 0XF3C1, 0XF281, 0X3240,
0X3600, 0XF6C1, 0XF781, 0X3740, 0XF501, 0X35C0, 0X3480, 0XF441,
0X3C00, 0XFCC1, 0XFD81, 0X3D40, 0XFF01, 0X3FC0, 0X3E80, 0XFE41,
0XFA01, 0X3AC0, 0X3B80, 0XFB41, 0X3900, 0XF9C1, 0XF881, 0X3840,
0X2800, 0XE8C1, 0XE981, 0X2940, 0XEB01, 0X2BC0, 0X2A80, 0XEA41,
0XEE01, 0X2EC0, 0X2F80, 0XEF41, 0X2D00, 0XEDC1, 0XEC81, 0X2C40,
0XE401, 0X24C0, 0X2580, 0XE541, 0X2700, 0XE7C1, 0XE681, 0X2640,
0X2200, 0XE2C1, 0XE381, 0X2340, 0XE101, 0X21C0, 0X2080, 0XE041,
0XA001, 0X60C0, 0X6180, 0XA141, 0X6300, 0XA3C1, 0XA281, 0X6240,
0X6600, 0XA6C1, 0XA781, 0X6740, 0XA501, 0X65C0, 0X6480, 0XA441,
0X6C00, 0XACC1, 0XAD81, 0X6D40, 0XAF01, 0X6FC0, 0X6E80, 0XAE41,
0XAA01, 0X6AC0, 0X6B80, 0XAB41, 0X6900, 0XA9C1, 0XA881, 0X6840,
0X7800, 0XB8C1, 0XB981, 0X7940, 0XBB01, 0X7BC0, 0X7A80, 0XBA41,
0XBE01, 0X7EC0, 0X7F80, 0XBF41, 0X7D00, 0XBDC1, 0XBC81, 0X7C40,
0XB401, 0X74C0, 0X7580, 0XB541, 0X7700, 0XB7C1, 0XB681, 0X7640,
0X7200, 0XB2C1, 0XB381, 0X7340, 0XB101, 0X71C0, 0X7080, 0XB041,
0X5000, 0X90C1, 0X9181, 0X5140, 0X9301, 0X53C0, 0X5280, 0X9241,
0X9601, 0X56C0, 0X5780, 0X9741, 0X5500, 0X95C1, 0X9481, 0X5440,
0X9C01, 0X5CC0, 0X5D80, 0X9D41, 0X5F00, 0X9FC1, 0X9E81, 0X5E40,
0X5A00, 0X9AC1, 0X9B81, 0X5B40, 0X9901, 0X59C0, 0X5880, 0X9841,
0X8801, 0X48C0, 0X4980, 0X8941, 0X4B00, 0X8BC1, 0X8A81, 0X4A40,
0X4E00, 0X8EC1, 0X8F81, 0X4F40, 0X8D01, 0X4DC0, 0X4C80, 0X8C41,
0X4400, 0X84C1, 0X8581, 0X4540, 0X8701, 0X47C0, 0X4680, 0X8641,
0X8201, 0X42C0, 0X4380, 0X8341, 0X4100, 0X81C1, 0X8081, 0X4040 };
public int BaudRate
{
get { return mSerialPort.BaudRate; }
set { mSerialPort.BaudRate = value; }
}
public Parity Parity
{
get { return mSerialPort.Parity; }
set { mSerialPort.Parity = value; }
}
public StopBits StopBits
{
get { return mSerialPort.StopBits; }
set { mSerialPort.StopBits = value; }
}
public int DataBits
{
get { return mSerialPort.DataBits; }
set { mSerialPort.DataBits = value; }
}
public string PortName
{
get { return mSerialPort.PortName; }
set { mSerialPort.PortName = value; }
}
public int ReadTimeout
{
get { return mSerialPort.ReadTimeout; }
set { mSerialPort.ReadTimeout = value; }
}
private byte _slaveNo;
public byte SlaveNo
{
get { return _slaveNo; }
set { _slaveNo = value; }
}
}
}