/// <summary>
/// Opens the port.
/// </summary>
/// <exception cref="IOException">
/// Raises IOException if cannot open port, or if some error happened during reading or writing port settings. Read the exception message to clarify.
/// </exception>
public void Open()
{
serialHandle = NativeMethods.CreateFile("\\\\.\\" + this.PortName, (uint)(EFileAccess.FILE_GENERIC_READ | EFileAccess.FILE_GENERIC_WRITE), 0, IntPtr.Zero, (uint)ECreationDisposition.OpenExisting, (uint)EFileAttributes.Normal, IntPtr.Zero);
if (serialHandle.IsInvalid)
{
throw new IOException("Cannot open " + this.PortName);
}
// Flush the input and output buffer and abort all outstanding overlapped read and write operations
Debug.WriteLine("Before :" + BytesToRead.ToString());
COMMTIMEOUTS timeout = new COMMTIMEOUTS();
timeout.ReadIntervalTimeout = 0;
timeout.ReadTotalTimeoutConstant = 0;
timeout.ReadTotalTimeoutMultiplier = 0;
timeout.WriteTotalTimeoutConstant = 0;
timeout.WriteTotalTimeoutMultiplier = 0;
if (!NativeMethods.SetCommTimeouts(serialHandle, ref timeout))
{
throw new IOException("SetCommTimeouts error!");
}
SetParams();
IsOpen = true;
}
/// <summary>
/// Opens the port.
/// </summary>
/// <exception cref="IOException">
/// Raises IOException if cannot open port, or if some error happened during reading or writing port settings. Read the exception message to clarify.
/// </exception>
public void Open()
{
serialHandle = NativeMethods.CreateFile("\\\\.\\" + this.PortName, (uint)(EFileAccess.FILE_GENERIC_READ | EFileAccess.FILE_GENERIC_WRITE), 0, IntPtr.Zero, (uint)ECreationDisposition.OpenExisting, (uint)EFileAttributes.Normal, IntPtr.Zero);
if (serialHandle.IsInvalid)
throw new IOException("Cannot open " + this.PortName);
// Flush the input and output buffer and abort all outstanding overlapped read and write operations
Debug.WriteLine("Before :" + BytesToRead.ToString());
COMMTIMEOUTS timeout = new COMMTIMEOUTS();
timeout.ReadIntervalTimeout = 0;
timeout.ReadTotalTimeoutConstant = 0;
timeout.ReadTotalTimeoutMultiplier = 0;
timeout.WriteTotalTimeoutConstant = 0;
timeout.WriteTotalTimeoutMultiplier = 0;
if (!NativeMethods.SetCommTimeouts(serialHandle, ref timeout))
throw new IOException("SetCommTimeouts error!");
SetParams();
IsOpen = true;
}
internal static extern bool SetCommTimeouts(SafeFileHandle hFile, [In] ref COMMTIMEOUTS lpCommTimeouts);