static void Main(string[] args)
{
SerialPort sp = new SerialPort("COM4");
if (sp.Open())
{
sp.SetBreakState();
Thread.Sleep(50);
sp.ClearBreakState();
sp.SetDefaultTimeouts();
SerialPortState cfg = sp.GetState();
cfg.BaudRate = 115200;
sp.SetState(cfg);
for (int i = 0; i < 3; i++)
{
string message = sp.ReadLine();
bool result = sp.WriteLine("cataca");
}
sp.Close();
}
}
/// <summary>
/// Sets the state (config parameters) on the serial port.
/// </summary>
/// <param name="state">The configuation to be applied to the serial port.</param>
public void SetState(SerialPortState state)
{
if (!IsOpen)
{
throw new InvalidOperationException("Port is not open.");
}
if (!Win32Api.SetCommState(m_fileHandle, ref state))
{
throw new Win32Exception(Win32Api.GetLastError(), "'SetCommState()' failed");
}
}
/// <summary>
/// Gets the current state (config parameters) set on the serial port.
/// </summary>
/// <returns>The current serial port state.</returns>
public SerialPortState GetState()
{
if (!IsOpen)
{
throw new InvalidOperationException("Port is not open.");
}
SerialPortState dcb = new SerialPortState();
if (!Win32Api.GetCommState(m_fileHandle, ref dcb))
{
throw new Win32Exception(Win32Api.GetLastError(), "'GetCommState()' failed");
}
return(dcb);
}
public static extern bool SetCommState(IntPtr hFile, [In] ref SerialPortState lpDCB);
public static extern bool GetCommState(IntPtr hFile, ref SerialPortState lpDcb);
/// <summary>
/// Sets the state (config parameters) on the serial port.
/// </summary>
/// <param name="state">The configuation to be applied to the serial port.</param>
public void SetState(SerialPortState state)
{
if (!IsOpen) throw new InvalidOperationException("Port is not open.");
if (!Win32Api.SetCommState(m_fileHandle, ref state))
{
throw new Win32Exception(Win32Api.GetLastError(), "'SetCommState()' failed");
}
}
/// <summary>
/// Gets the current state (config parameters) set on the serial port.
/// </summary>
/// <returns>The current serial port state.</returns>
public SerialPortState GetState()
{
if (!IsOpen) throw new InvalidOperationException("Port is not open.");
SerialPortState dcb = new SerialPortState();
if (!Win32Api.GetCommState(m_fileHandle, ref dcb))
{
throw new Win32Exception(Win32Api.GetLastError(), "'GetCommState()' failed");
}
return dcb;
}
public static extern bool GetCommState(IntPtr hFile, ref SerialPortState lpDcb);