public void SetData(byte SlaveAddr, ushort StartAddr, Action <bool> DataSent, params ushort[] Data)
{
byte[] buffer = new byte[9 + Data.Length * 2];
buffer[0] = SlaveAddr;
buffer[1] = 0x10;
buffer[2] = (byte)((StartAddr >> 8) & 0xFF);
buffer[3] = (byte)(StartAddr & 0xFF);
buffer[4] = (byte)((Data.Length >> 8) & 0xFF);
buffer[5] = (byte)(Data.Length & 0xFF);
buffer[6] = (byte)(2 * Data.Length);
for (int i = 0; i < Data.Length; i++)
{
buffer[7 + i * 2] = (byte)((Data[i] >> 8) & 0xFF);
buffer[8 + i * 2] = (byte)(Data[i] & 0xFF);
}
byte[] buffer1;
ModbusCRC.CalcCRC(buffer, 7 + Data.Length * 2, out buffer1);
this.DataSent = DataSent;
waitByteCount = 8;
Action <byte[]> a = new Action <byte[]>(SendWriteCoils);
a.BeginInvoke(buffer1, null, null);
}
public void GetData(byte SlaveAddr, ushort StartAddr, int Count, Action <bool, ushort[]> DataReceived)
{
byte[] txBuffer = new byte[8];
txBuffer[0] = SlaveAddr;
txBuffer[1] = 0x03;
BitConverter.GetBytes(StartAddr).Reverse().ToArray().CopyTo(txBuffer, 2);
BitConverter.GetBytes((ushort)Count).Reverse().ToArray().CopyTo(txBuffer, 4);
byte[] txBufferCRC;
ModbusCRC.CalcCRC(txBuffer, 6, out txBufferCRC);
this.DataReceived = DataReceived;
waitByteCount = 5 + 2 * Count;
waitWordCount = Count;
Action <byte[]> a = new Action <byte[]>(SendReadCoils);
a.BeginInvoke(txBufferCRC, null, null);
}
public void Request(byte[] Buffer, byte ExpectByteCount, Action <bool, byte[]> DataReceived)
{
if (Buffer == null)
{
return;
}
if (Buffer.Length < 2)
{
return;
}
byte[] txBufferCRC;
ModbusCRC.CalcCRC(Buffer, Buffer.Length, out txBufferCRC);
waitByteCount = ExpectByteCount;
this.DataReceivedByte = DataReceived;
Action <byte[]> a = new Action <byte[]>(SendRequest);
a.BeginInvoke(txBufferCRC, null, null);
}
private void SendWriteCoils(byte[] txBuffer)
{
if (serialPort == null)
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
if (!serialPort.IsOpen)
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
try
{
if (serialPort.BytesToRead != 0)
{
byte[] buff = new byte[serialPort.BytesToRead + 1];
serialPort.Read(buff, 0, serialPort.BytesToRead);
//serialPort.DiscardInBuffer();
}
//Thread.Sleep(2);
serialPort.Write(txBuffer, 0, txBuffer.Length);
}
catch
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
if (waitSerialData.WaitOne(TimeSpan.FromMilliseconds(Timeout)))
{
for (int i = 0; i < waitByteCount; i++)
{
if (serialPort.BytesToRead < 8)
{
waitSerialData.WaitOne(TimeSpan.FromMilliseconds(10));
}
else
{
break;
}
}
}
byte[] rxBuffer;
if (serialPort.BytesToRead == 8)
{
rxBuffer = new byte[8];
try
{
serialPort.Read(rxBuffer, 0, 8);
}
catch
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
}
else //Данные так и не пришли
{
if (DataSent != null)
{
DataSent(false);
}
return;
}
bool dataOk = false;
if (!ModbusCRC.CheckCRC(rxBuffer, 8))
{
dataOk = false;
}
else
{
dataOk = true;
}
if (DataSent != null)
{
DataSent(dataOk);
}
}
private void SendReadCoils(byte[] txBuffer)
{
if (serialPort == null)
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
if (!serialPort.IsOpen)
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
try
{
if (serialPort.BytesToRead != 0)
{
byte[] buff = new byte[serialPort.BytesToRead + 1];
serialPort.Read(buff, 0, serialPort.BytesToRead);
//serialPort.DiscardInBuffer();
}
//Thread.Sleep(2);
serialPort.Write(txBuffer, 0, txBuffer.Length);
}
catch
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
if (waitSerialData.WaitOne(TimeSpan.FromMilliseconds(Timeout)))
{
for (int i = 0; i < waitByteCount; i++)
{
if (serialPort.BytesToRead < waitByteCount)
{
waitSerialData.WaitOne(TimeSpan.FromMilliseconds(10));
}
else
{
break;
}
}
}
bool dataOk = false;
byte[] rxBuffer = new byte[0];
if (serialPort.BytesToRead >= waitByteCount)
{
int count = serialPort.BytesToRead;
rxBuffer = new byte[count];
try
{
serialPort.Read(rxBuffer, 0, count);
}
catch
{
if (CrashSerialPort != null)
{
CrashSerialPort(this, null);
}
return;
}
}
else //Данные так и не пришли
{
if (DataReceived != null)
{
DataReceived(false, new ushort[0]);
}
return;
}
ushort[] ubuff = new ushort[0];
if (!ModbusCRC.CheckCRC(rxBuffer, waitByteCount))
{
dataOk = false;
ubuff = new ushort[0];
}
else
{
ModbusCRC.RemoveData(rxBuffer, 3, waitWordCount, out ubuff);
dataOk = true;
}
if (DataReceived != null)
{
DataReceived(dataOk, ubuff);
}
}