def __init__(self, uri, **kw):

        super().__init__(uri)

    def update(self, buf: bytes):

        log.info(f'dummy update {list(map(int,buf[:80]))}')

class BackgroundLoopOutput(Output):

    """Call _write forever at 20hz in background threads"""

    rate: float

        super().__init__(uri)

        self.rate = rate

        self._currentBuffer = b''

        self._task = asyncio.create_task(self._loop())

    async def _loop(self):

        while True:

            t1 = time.time()

            self._loop_one()

            remain = max(0, 1 / self.rate - (time.time() - t1))

            await asyncio.sleep(remain)

            return dev ,int(words[3])

    raise ValueError("no matching uDMX found")

def main():

    logging.getLogger('autodepgraphapi').setLevel(logging.INFO)

    logging.getLogger('syncedgraph').setLevel(logging.INFO)

    logging.getLogger('output.allDmx').setLevel(logging.WARNING)

    logging.getLogger().setLevel(logging.DEBUG)

    logging.getLogger('collector').setLevel(logging.DEBUG)

    graph = SyncedGraph(networking.rdfdb.url, "collector")

            # if user doesn't have r/w, fail now

    try:

        # todo: drive outputs with config files

        outputs: List[Output] = [

            # ArtnetDmx(L9['output/dmxA/'],

            #           host='127.0.0.1',

            #           port=6445,

            #           rate=rate),

            #sudo chmod a+rw /dev/bus/usb/003/021

        ]

    except Exception:

        log.error("setting up outputs:")

        traceback.print_exc()

        raise

    listeners = WebListeners()

    c = Collector(graph, outputs, listeners)

    zl = asyncio.create_task(zmqListener(c))

    app = Starlette(

        debug=True,

        routes=[

            # Route('/recentRequests', lambda req: get_recentRequests(req, db)),