Backport wifi KNX tricks

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@2387 b32b6428-25c9-4566-ad07-03861ab6144f

devices/protocols/KNX/xaal/knx/gw.py

@@ -33,7 +33,7 @@ class GW(gevent.Greenlet):
         atexit.register(self._exit)
         self.config()
         self.setup()
-        self.init()
+        self.refresh()
 
     def config(self):
         cfg = tools.load_cfg(PACKAGE_NAME)
@@ -45,8 +45,8 @@ class GW(gevent.Greenlet):
         self.cfg = cfg
 
     def setup(self):
-        if 'phy_addr' in self.cfg['config']:
-            addr = self.cfg['config']['phy_addr']
+        addr = self.cfg['config'].get('phy_addr',None)
+        if addr:
             self.knx = KNXConnector(addr)
         else:
             self.knx = KNXConnector()
@@ -67,6 +67,11 @@ class GW(gevent.Greenlet):
 
         l = [k.dev for k in self.devices]
         self.engine.add_devices(l)
+        # schedule a refresh of KNX network. usefull for wifi network
+        refresh_rate = self.cfg['config'].get('refresh_rate',None)
+        if refresh_rate:
+            self.engine.add_timer(self.refresh,int(refresh_rate))
+        
 
     def _run(self):
         while 1:
@@ -84,8 +89,8 @@ class GW(gevent.Greenlet):
             if cemi.group_addr in dev.attributes_binding :
                 dev.parse(cemi)
 
-    def init(self):
-        """loop throught the device adress to find initial values"""
+    def refresh(self):
+        """loop throught the device adress to find values"""
         for dev in self.devices:
             for ga in dev.attributes_binding:
                 self.knx.read(ga)