compass update in settings

flockompass.kv

@@ -168,6 +168,23 @@
             orientation: 'horizontal'
             value: 0.88
             on_value: app.set_smoothing()
+
+        BackgroundLabel:
+            text: "Compas update frequency"
+            background_color: rgba("#f3e8d2")
+            color: rgba("#346645")
+            font_size: '14sp'
+        BgSlider:
+            id: slider_compass_update
+            background_color: rgba("#f3e8d2")
+            color: rgba("#346645")
+            min: 0.1
+            max: 0.9
+            step: 0.05
+            orientation: 'horizontal'
+            value: 0.777
+            on_value: app.set_compass_update()
+
         BackgroundLabel:
             text: "Update frequency"
             background_color: rgba("#f3e8d2")

main.py

@@ -66,6 +66,11 @@ class FlockompassApp(App):
     def set_smoothing(self):
         self.session_data['smoothing'] = self.ss.ids.slider_smoothing.value
 
+    def set_compass_update(self):
+        self.session_data['compass_update'] = self.ss.ids.slider_compass_update.value
+        self.compass_disable()
+        self.compass_enable()
+
     def set_destination(self):
         self.compass_enable()
         self.session_data['dest_lat'] = self.ms.ids.centermark.lat
@@ -176,7 +181,8 @@ class FlockompassApp(App):
 
     def compass_enable(self):
         self.cs.facade.enable()
-        Clock.schedule_interval(self.get_field, 1 / 33.3)
+        Clock.schedule_interval(self.get_field,
+                                1.0 - self.session_data.get('compass_update', 0.777))
 
     def compass_disable(self):
         self.cs.facade.disable()