add callback only once

2020-04-23 20:19:34 +00:00
parent 1151f9bc10
commit 0593937da6
1 changed files with 3 additions and 3 deletions
@@ -37,11 +37,11 @@ class PVChecker:


    def start_counting(self):
-        def on_value_change(value=None, **kwargs):
+        def collect(value=None, **kwargs):
            self.data.append(value)

-        #TODO: don't add callback twice!?
-        self.pv.add_callback(callback=on_value_change)
+        self.pv.clear_callbacks() # add callback only once
+        self.pv.add_callback(callback=collect)


    def stop_counting_and_analyze(self):