private FirmwareUpdatePackage DecodePackage()
        {
            var package = new FirmwareUpdatePackage();

            package.DecodeFrame(_buffer.ToArray());
            Debug.WriteLine(package.PackageStatus);
            while (true)
            {
                if (package.PackageStatus == PackageStatus.BufferHaveNoEnoughLength)
                {
                    break;
                }
                if (package.PackageStatus == PackageStatus.DecodeCompleted)
                {
                    _buffer.RemoveRange(0, package.PackageLength);
                    break;
                }
                if (_buffer.Count > 0)
                {
                    _buffer.RemoveAt(0);
                }
                package.DecodeFrame(_buffer.ToArray());
                Debug.WriteLine(package.PackageStatus);
            }

            return(package);
        }
        private FirmwareUpdatePackage DecodePackage()
        {
            var package = new FirmwareUpdatePackage();

            package.DecodeFrame(_buffer.ToArray());
            if (package.PackageStatus == PackageStatus.InvalidHead)
            {
                if (_buffer.Count > 0)
                {
                    _buffer.RemoveAt(0);
                }
                DecodePackage();
            }
            else if (package.PackageStatus == PackageStatus.BufferHaveNoEnoughLength)
            {
                return(package);
            }
            else
            {
                _buffer.Clear();
            }
            return(package);
        }