Looking for chances to add bit field support in pyobjus, but unfortunetly libffi doesn't support structures with bitfields. Source -> http://www.manpagez.com/info/libffi/libffi-3.0.13/libffi_12.php#Missing-Features. Later we can see if there is some hack,  which we can do for adding some support for this, but currently I think that this isn't priority for pyobjus