Added smooth

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/fork@1629 b32b6428-25c9-4566-ad07-03861ab6144f

devices/sensors/HTU21D/xaal/htu21d/gw.py

@@ -24,6 +24,11 @@ def build_dev(addr,devtype):
     return dev
         
 
+def smooth(attribute,value,gap):
+    old = attribute.value
+    if not (old - gap <= value <= old + gap):
+        attribute.value = value
+
 
 class GW:
     def __init__(self,engine):
@@ -48,9 +53,8 @@ class GW:
         self.sensor = HTU21D.HTU21D()
         
     def process(self):
-        self.temp.value = round(self.sensor.read_temperature(),1)
-        self.hum.value  = round(self.sensor.read_humidity(),0)
-        
+        smooth(self.temp,round(self.sensor.read_temperature(),1),0.1)
+        smooth(self.hum.value,round(self.sensor.read_humidity(),0),1)
     
 def run():
     eng = xaal.lib.Engine()