SerialPort StopBits Windows7 C++/CLI

I've been using the SerialPort class from C++/CLI (Windows::IO::Ports) to open a serial port and communicate with a periferic device, and everything seems to work. The port opens, and the data is sent.. But i didn't get an answer from the periferic device.

I use a code like:

SerialPort^ _serialPort;
_serialPort = gcnew SerialPort();

//_serialPort = gcnew SerialPort("COM1",115200,Parity::None, 8, StopBits::One);

// Allow the user to set the appropriate proper开发者_Python百科ties.
_serialPort->PortName = "COM1";
_serialPort->BaudRate = 115200;

//Parity None by default
//_serialPort->Parity = Parity::None;

_serialPort->DataBits = 8;

_serialPort->StopBits = StopBits::One;

// Set the read/write timeouts
_serialPort->ReadTimeout = 1000;
_serialPort->WriteTimeout = 500;
_serialPort->Open();

Using a program to monitor the Serial Port communication, it seems that the number of Stop bits is 0. As you can see, i set the stop bits to 1, and even the strangest thing is that the default value is 1. I don't know why it keeps being 0. I have tried to change the baudrate and the databits, and it is changed, but there is no way with the StopBits...

It is really a pitty, because this seems really easier to use that other codes around the web.

Can anybody help me? Any ideas why it didn't work?

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Can anybody tell me then, if this code is ok?

the array sent is: array<Byte>^ bytes = gcnew array<Byte>(32); (it is initialized with some values)

to send data i use: _serialPort->Write(bytes,0,32);

To read data i have tried:

_serialPort->Read(readarray,0,18);
_serialPort->ReadExisting();

And none of them get back any data... When i use the Serial Port Monitor to open the communication and send the same bytes, it answers...

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The stop bits are configured by an enumerated value which is not equal to the number of stop bits.

Zero is the correct encoding for one stop bit. See http://msdn.microsoft.com/en-us/library/aa363214.aspx

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Found it!! It seems that even setting the "Handshake" to "None", the DTR and RTS ports were set LOW after the data is sent. (i don't know why).

I set them manually to HIGH with:

_serialPort->RtsEnable = true;
_serialPort->DtrEnable =true;