/// <summary>
/// Prepares the HE853 device for usage.
/// </summary>
private void OpenUnlocked()
{
this.CloseUnlocked();
// "\\\\?\\hid#vid_04d9&pid_1357#6&37b1e0bf&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}\0"
string devicePath = NativeMethodsHelper.GetHE853DevicePath();
if (devicePath.Length != 0)
{
NativeMethodsHelper.FlushHIDQueue(devicePath);
this.writeHandle = NativeMethodsHelper.CreateFileForWrite(devicePath);
}
if (this.writeHandle == IntPtr.Zero)
{
throw new FileNotFoundException("HE853 device is not connected or in use.");
}
}
/// <summary>
/// Shuts down the HE853 device.
/// </summary>
private void CloseUnlocked()
{
NativeMethodsHelper.CloseHandle(ref this.writeHandle);
}