public void Init()
{
lock (LockObject) {
if (((++_refCount != 1) || (Running == ThreadState.Running)) || (_thread != null))
{
return;
}
try
{
if (_ftd2XxHandle == IntPtr.Zero)
{
_data = new byte[0x201];
if (FTD2XX.FT_Open(0, ref _ftd2XxHandle) != FTD2XX.FT_STATUS.FT_OK)
{
throw new Exception("Error opening FTD2XX device 0");
}
FTD2XX.FT_ResetDevice(_ftd2XxHandle);
FTD2XX.FT_SetTimeouts(_ftd2XxHandle, 16, 50);
FTD2XX.FT_SetBaudRate(_ftd2XxHandle, 250000);
FTD2XX.FT_SetDataCharacteristics(_ftd2XxHandle, 8, 2, 0);
FTD2XX.FT_SetFlowControl(_ftd2XxHandle, 0, 0, 0);
}
_thread = new Thread(SendDataThread);
_thread.Start();
}
catch
{
Close();
throw;
}
}
}
public void Close()
{
lock (LockObject)
{
if ((_refCount <= 0) || (--_refCount != 0))
{
return;
}
if (Running == ThreadState.Running)
{
Running = ThreadState.StopRequested;
while (Running != ThreadState.Stopped)
{
Thread.Sleep(1); //todo replace with Task.Delay() when using 4.5
}
}
_thread = null;
if (_ftd2XxHandle != IntPtr.Zero)
{
FTD2XX.FT_Close(_ftd2XxHandle);
_ftd2XxHandle = IntPtr.Zero;
}
_data = null;
}
}
private void SendDataThread()
{
uint bytesWritten = 0;
Running = ThreadState.Running;
while (Running == ThreadState.Running)
{
FTD2XX.FT_SetBreakOn(_ftd2XxHandle);
Thread.Sleep(1); //todo replace with Task.Delay() when using 4.5
FTD2XX.FT_SetBreakOff(_ftd2XxHandle);
if ((_data != null) && (Running == ThreadState.Running))
{
lock (_data)
{
FTD2XX.FT_Write(_ftd2XxHandle, _data, (uint)_data.Length, ref bytesWritten);
}
}
Thread.Sleep(2); //todo replace with Task.Delay() when using 4.5
}
Running = ThreadState.Stopped;
}