public void SendBytesToDevice()
{
if (IntPtr.Zero == _ftdi.GetFtHandle())
{
_ftdi.SetFtHandle(_ftHandle);
}
_status = FtcSuccess;
uint numBytesSent = 0;
uint dwTotalNumBytesSent = 0;
if (_dwNumBytesToSend > MaxNumBytesUsbWrite)
{
do
{
uint dwNumDataBytesToSend;
if (numBytesSent != 0)
{
var tmp = new byte[_dwNumBytesToSend - dwTotalNumBytesSent];
Buffer.BlockCopy(_byOutputBuffer, (int)numBytesSent, tmp, 0, tmp.Length);
ClearOutputBuffer();
Buffer.BlockCopy(tmp, 0, _byOutputBuffer, 0, tmp.Length);
if ((dwTotalNumBytesSent + MaxNumBytesUsbWrite) <= _dwNumBytesToSend)
{
dwNumDataBytesToSend = MaxNumBytesUsbWrite;
}
else
{
dwNumDataBytesToSend = (uint)tmp.Length;
}
}
else
{
if ((dwTotalNumBytesSent + MaxNumBytesUsbWrite) <= _dwNumBytesToSend)
{
dwNumDataBytesToSend = MaxNumBytesUsbWrite;
}
else
{
dwNumDataBytesToSend = _dwNumBytesToSend - dwTotalNumBytesSent;
}
}
_status = (uint)_ftdi.Write(_byOutputBuffer, dwNumDataBytesToSend, ref numBytesSent);
dwTotalNumBytesSent = dwTotalNumBytesSent + numBytesSent;
}while (dwTotalNumBytesSent < _dwNumBytesToSend && _status == FtcSuccess);
}
else
{
_status = (uint)_ftdi.Write(_byOutputBuffer, _dwNumBytesToSend, ref numBytesSent);
}
_dwNumBytesToSend = 0;
}