__init__.py 文件源码

def async_setup_scanner_platform(hass: HomeAssistantType, config: ConfigType,
                                 scanner: Any, async_see_device: Callable):
    """Helper method to connect scanner-based platform to device tracker.

    This method is a coroutine.
    """
    interval = config.get(CONF_SCAN_INTERVAL, DEFAULT_SCAN_INTERVAL)

    # Initial scan of each mac we also tell about host name for config
    seen = set()  # type: Any

    def device_tracker_scan(now: dt_util.dt.datetime):
        """Called when interval matches."""
        found_devices = scanner.scan_devices()

        for mac in found_devices:
            if mac in seen:
                host_name = None
            else:
                host_name = scanner.get_device_name(mac)
                seen.add(mac)
            hass.add_job(async_see_device(mac=mac, host_name=host_name))

    async_track_utc_time_change(
        hass, device_tracker_scan, second=range(0, 60, interval))

    hass.async_add_job(device_tracker_scan, None)