Add error handling & Gw

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/fork@1587 b32b6428-25c9-4566-ad07-03861ab6144f

devices/weather/OpenWeatherMap/xaal/owm/gw.py

@@ -2,6 +2,7 @@
 from xaal.lib import Device,Engine,tools,config
 import platform,time
 import pyowm
+from pyowm.exceptions import OWMError
 
 PACKAGE_NAME = "xaal.owm"
 logger = tools.get_logger(PACKAGE_NAME,'DEBUG')
@@ -28,10 +29,9 @@ class GW:
         """ create devices, register .."""
         cfg = self.cfg['config']
       
-        # create devices
-        
         attr = {} 
         
+        # devices
         temp = build_dev("thermometer.basic",cfg['temperature'])
         attr['temperature'] = temp.new_attribute('temperature')
         
@@ -43,12 +43,22 @@ class GW:
 
         self.attr = attr
         self.devs = [temp,hum,press]
-        self.eng.add_devices(self.devs)
+        
+        # gw 
+        gw = build_dev("gateway.basic",cfg['addr'])
+        emb = gw.new_attribute('embedded',[dev.address for dev in self.devs])
+        self.eng.add_devices(self.devs + [gw,])
         
         self.eng.add_timer(self.update,RATE)
         self.owm = pyowm.OWM(cfg['api_key'])
 
     def update(self):
+        try:
+            self._update()
+        except OWMError,e:
+            logger.warn(e)
+
+    def _update(self):
         place = self.cfg['config']['place']
         weather = self.owm.weather_at_place(place).get_weather()
         self.attr['temperature'].value  = weather.get_temperature(unit='celsius')['temp']