Add home-assistant integration

This commit adds integration for home assistant

home-assistant/README.md

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+# Home Assistant integration
+
+This is an experimental [home assistant](https://www.home-assistant.io/) integration for meteo sensor. Place the `meteo` folder to your `CONFIG/custom_components` folder on your home-assistant intallation (See [Creating your first integration](https://developers.home-assistant.io/docs/creating_component_index) page for more info)

home-assistant/meteo/__init__.py

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+"""
+meteo MQTT component
+
+Listens for meteo messages on MQTT and updates the state accordingly.
+
+Offets a service 'meteo'
+
+Also offers a service 'set_state' that will publish a message on the topic that
+will be passed via MQTT to our message received listener. Call the service with
+example payload {"new_state": "some new state"}.
+
+Configuration:
+
+To use the meteo component you will need to add the following to your
+configuration.yaml file.
+
+meteo:
+  topic: "meteo"
+"""
+from homeassistant.components import mqtt
+
+import voluptuous as vol
+import json
+import logging
+
+_LOGGER = logging.getLogger(__name__)
+
+# The domain of your component. Should be equal to the name of your component.
+DOMAIN = "meteo"
+
+CONF_TOPIC = 'topic'
+DEFAULT_TOPIC = 'meteo/#'
+
+## Schema to validate the configured MQTT topic
+#CONFIG_SCHEMA = vol.Schema({
+#    vol.Optional(CONF_TOPIC, default=DEFAULT_TOPIC): mqtt.valid_subscribe_topic
+#})
+
+
+def friendly_name(name) :
+    if name == "t" : return "Temperature"
+    elif name == "hum" : return "Humidity"
+    elif name == "p" : return "Pressure"
+    else : return name
+
+def setup(hass, config):
+    topic = config[DOMAIN][CONF_TOPIC]
+    hass.states.set("meteo.present", "yes")
+
+    # Listen to a message on MQTT.
+    def received(topic, payload, qos):
+        # Parse json
+        try :
+            j = json.loads(payload)
+            station_id = int(j['id'])
+            station_name = j['name']
+            hass.states.set("meteo.%d"%station_id, station_name)
+            base = "sensor.meteo_%d" % station_id
+            hass.states.set(base + "_name", station_name)
+            attr = {}
+            for x in j :
+                if x in ["id","name"] : continue
+                try :
+                    attr = {}
+                    attr['friendly_name'] = "%s %s" % (station_name, friendly_name(x))
+                    hass.states.set(base + "_" + x, float(j[x]),attr)
+                except ValueError :
+                    continue
+        except Exception as e:
+            _LOGGER.info("meteo invalid json received: %s (%s)" % (payload, e))
+            # Ignore for now
+            return
+
+    hass.components.mqtt.subscribe(topic, received)
+
+    # Return boolean to indicate that initialization was successfully.
+    return True

home-assistant/meteo/manifest.json

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+{
+  "domain": "meteo",
+  "name": "meteo",
+  "documentation": "github.com/grisu48/meteo",
+  "dependencies": ["mqtt"],
+  "codeowners": [],
+  "requirements": []
+}
+