public WinSerialStream (string port_name, int baud_rate, int data_bits, Parity parity, StopBits sb,
bool dtr_enable, bool rts_enable, Handshake hs, int read_timeout, int write_timeout,
int read_buffer_size, int write_buffer_size)
{
handle = CreateFile (port_name != null && !port_name.StartsWith(@"\\.\")
? @"\\.\" + port_name : port_name,
GenericRead | GenericWrite, 0, 0, OpenExisting,
FileFlagOverlapped, 0);
if (handle == -1)
ReportIOError (port_name);
// Set port low level attributes
SetAttributes (baud_rate, parity, data_bits, sb, hs);
// Clean buffers and set sizes
if (!PurgeComm (handle, PurgeRxClear | PurgeTxClear) ||
!SetupComm (handle, read_buffer_size, write_buffer_size))
ReportIOError (null);
// Set timeouts
this.read_timeout = read_timeout;
this.write_timeout = write_timeout;
timeouts = new Timeouts (read_timeout, write_timeout);
if (!SetCommTimeouts(handle, timeouts))
ReportIOError (null);
/// Set DTR and RTS
SetSignal(SerialSignal.Dtr, dtr_enable);
if (hs != Handshake.RequestToSend &&
hs != Handshake.RequestToSendXOnXOff)
SetSignal(SerialSignal.Rts, rts_enable);
// Init overlapped structures
NativeOverlapped wo = new NativeOverlapped ();
write_event = new ManualResetEvent (false);
wo.EventHandle = write_event.Handle;
write_overlapped = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (NativeOverlapped)));
Marshal.StructureToPtr (wo, write_overlapped, true);
NativeOverlapped ro = new NativeOverlapped ();
read_event = new ManualResetEvent (false);
ro.EventHandle = read_event.Handle;
read_overlapped = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (NativeOverlapped)));
Marshal.StructureToPtr (ro, read_overlapped, true);
}
static extern bool SetCommTimeouts(int handle, Timeouts timeouts);
