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);
}
}