def __init__(self, device_info):
""" Create a new device instance and connect to the CHDK device.
:param device_info: Information about device to connect to
:type device_info: :class:`DeviceInfo`
"""
self.info = device_info
self._lua = LuaContext()
self._lua.globals.devspec = self.info._asdict()
self._lua.pexecute("""
con = chdku.connection({bus = devspec.bus_num,
dev = devspec.device_num})
con:connect()
""")
self._con = self._lua.globals.con
