private void SetTimeouts()
{
if (IsOpen)
{
CommTimeouts ct = new CommTimeouts();
ct.ReadIntervalTimeout = readTimeout;
ct.ReadTotalTimeoutMultiplier = 1;
ct.ReadTotalTimeoutConstant = 0;
ct.WriteTotalTimeoutConstant = writeTimeout;
ct.WriteTotalTimeoutConstant = 0;
if (!SetCommTimeouts(comPortHandle, ref ct))
{
throw new IOException("Error setting timeouts");
}
}
}
static extern bool SetCommTimeouts(IntPtr hFile, [In] ref CommTimeouts lpCommTimeouts);
private void Initialize()
{
_ReadSafeFileHandle = ApiService.CreateReadConnection(DeviceId, FileAccessRights.GenericRead | FileAccessRights.GenericWrite);
if (_ReadSafeFileHandle.IsInvalid)
{
return;
}
var dcb = new Dcb();
var isSuccess = ApiService.AGetCommState(_ReadSafeFileHandle, ref dcb);
WindowsDeviceBase.HandleError(isSuccess, Messages.ErrorCouldNotGetCommState);
dcb.ByteSize = _ByteSize;
dcb.fDtrControl = 1;
dcb.BaudRate = (uint)_BaudRate;
dcb.fBinary = 1;
dcb.fTXContinueOnXoff = 0;
dcb.fAbortOnError = 0;
dcb.fParity = 1;
switch (_Parity)
{
case Parity.Even:
dcb.Parity = 2;
break;
case Parity.Mark:
dcb.Parity = 3;
break;
case Parity.Odd:
dcb.Parity = 1;
break;
case Parity.Space:
dcb.Parity = 4;
break;
default:
dcb.Parity = 0;
break;
}
switch (_StopBits)
{
case StopBits.One:
dcb.StopBits = 0;
break;
case StopBits.OnePointFive:
dcb.StopBits = 1;
break;
case StopBits.Two:
dcb.StopBits = 2;
break;
default:
throw new ArgumentException(Messages.ErrorMessageStopBitsMustBeSpecified);
}
isSuccess = ApiService.ASetCommState(_ReadSafeFileHandle, ref dcb);
WindowsDeviceBase.HandleError(isSuccess, Messages.ErrorCouldNotSetCommState);
var timeouts = new CommTimeouts
{
WriteTotalTimeoutConstant = 0,
ReadIntervalTimeout = 1,
WriteTotalTimeoutMultiplier = 0,
ReadTotalTimeoutMultiplier = 0,
ReadTotalTimeoutConstant = 0
};
isSuccess = ApiService.ASetCommTimeouts(_ReadSafeFileHandle, ref timeouts);
WindowsDeviceBase.HandleError(isSuccess, Messages.ErrorCouldNotSetCommTimeout);
}
private static extern int WinSetCommTimeouts(IntPtr hFile, CommTimeouts timeouts);
override internal bool SetCommTimeouts(IntPtr hPort, CommTimeouts timeouts)
{
return(Convert.ToBoolean(WinSetCommTimeouts(hPort, timeouts)));
}
private static extern int SetCommTimeouts(int hFile, ref CommTimeouts lpCommTimeouts);
