Fix delta stuff

Author: facchinm

ArduinoCloudThing.cpp

@@ -130,6 +130,7 @@ ArduinoCloudPropertyGeneric& ArduinoCloudThing::addPropertyReal(int& property, S
     ArduinoCloudProperty<int> *thing = new ArduinoCloudProperty<int>(property, name);
     list.add(thing);
     thing->shadow_property = -1;
+    thing->minDelta = 0;
     return *(reinterpret_cast<ArduinoCloudPropertyGeneric*>(thing));
 }
 
@@ -149,6 +150,7 @@ ArduinoCloudPropertyGeneric& ArduinoCloudThing::addPropertyReal(float& property,
     }
     ArduinoCloudProperty<float> *thing = new ArduinoCloudProperty<float>(property, name);
     list.add(thing);
+    thing->minDelta = 0.0f;
     thing->shadow_property = property - 1.0f;
     return *(reinterpret_cast<ArduinoCloudPropertyGeneric*>(thing));
 }

ArduinoCloudThing.h

@@ -192,7 +192,7 @@ class ArduinoCloudProperty : public ArduinoCloudPropertyGeneric
         if (updatePolicy == ON_CHANGE) {
             return newData();
         }
-        return (millis() - lastUpdated > updatePolicy * 1000) ;
+        return ((millis() - lastUpdated) > (updatePolicy * 1000)) ;
     }
 
     inline bool operator==(const ArduinoCloudProperty& rhs){
@@ -216,12 +216,12 @@ class ArduinoCloudProperty : public ArduinoCloudPropertyGeneric
 
 template <>
 inline bool ArduinoCloudProperty<int>::newData() {
-    return (property != shadow_property && abs(property - shadow_property) > minDelta );
+    return (property != shadow_property && abs(property - shadow_property) >= minDelta );
 }
 
 template <>
 inline bool ArduinoCloudProperty<float>::newData() {
-    return (property != shadow_property && abs(property - shadow_property) > minDelta );
+    return (property != shadow_property && abs(property - shadow_property) >= minDelta );
 }
 
 template <>