public void Open()
{
// open serial port
int fd = Libc.open(portName, Libc.OpenFlags.O_RDWR | Libc.OpenFlags.O_NONBLOCK);
if (fd == -1)
{
throw new Exception($"failed to open port ({portName})");
}
// set baud rate
byte[] termiosData = new byte[256];
Libc.tcgetattr(fd, termiosData);
Libc.cfsetspeed(termiosData, baudRate);
Libc.tcsetattr(fd, 0, termiosData);
// start reading
Task.Run((Action)StartReading, CancellationToken);
this.fd = fd;
}
private void SetBaudRate(BaudRate baudRate)
{
byte[] termiosData = new byte[Marshal.SizeOf(typeof(Termios))];
Libc.tcgetattr(_FileDescriptor.Value, termiosData);
Libc.cfsetspeed(termiosData, baudRate);
}