Added ISY994 weather data as sensors.

homeassistant/components/sensor/isy994.py

@@ -0,0 +1,100 @@
+""" Support for ISY994 sensors. """
+# system imports
+import logging
+
+# homeassistant imports
+from ..isy994 import ISY
+from homeassistant.helpers.entity import Entity
+from homeassistant.const import STATE_OPEN, STATE_CLOSED
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """ Sets up the isy994 platform. """
+    logger = logging.getLogger(__name__)
+    devs = []
+    # verify connection
+    if ISY is None or not ISY.connected:
+        logger.error('A connection has not been made to the ISY controller.')
+        return False
+
+    # import weather
+    if ISY.climate is not None:
+        for prop in ISY.climate._id2name:
+            if prop is not None:
+                devs.append(ISYSensorDevice('ISY.weather.' + prop, prop,
+                    getattr(ISY.climate, prop), 
+                    getattr(ISY.climate, prop + '_units')))
+
+
+    add_devices(devs)
+
+
+class ISYSensorDevice(Entity):
+    """ represents a isy sensor within home assistant. """
+
+    domain = 'sensor'
+
+    def __init__(self, device_id, name, source, units=None):
+        # setup properties
+        self._id = device_id
+        self._name = name
+        self.entity_id = self.domain + '.' + self.name.replace(' ', '_')
+        self._source = source
+        self._units = units
+
+        # track changes
+        self._changeHandler = self._source.subscribe('changed', self.onUpdate)
+
+    def __del__(self):
+        self._changeHandler.unsubscribe()
+
+    @property
+    def should_poll(self):
+        return False
+
+    @property
+    def dtype(self):
+        return 'binary' if self._units is None else 'analog'
+
+    @property
+    def state(self):
+        """ Returns the state. """
+        if self.dtype is 'binary':
+            return STATE_OPEN if self.is_open >= 255 else STATE_CLOSED
+        else:
+            return self.value
+
+    @property
+    def state_attributes(self):
+        return {}
+
+    @property
+    def unit_of_measurement(self):
+        return self._units
+
+    @property
+    def unique_id(self):
+        """ Returns the id of this isy sensor """
+        return self._id
+
+    @property
+    def name(self):
+        """ Returns the name of the sensor if any. """
+        return self._name
+
+    def update(self):
+        """ Update state of the sensor. """
+        # ISY objects are automatically updated by the ISY's event stream
+        pass
+
+    @property
+    def is_open(self):
+        """ True if door is open. """
+        return self.value >= 255
+
+    @property
+    def value(self):
+        return self._source._val
+
+    def onUpdate(self, e):
+        self.update_ha_state()