Provide a better error message for bad time bases.

ZhuangLab · Oct 22, 2019 · 748ebb2 · 748ebb2
1 parent a3107aa
commit 748ebb2
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/storm_control/sc_hardware/nationalInstruments/nidaqModule.py b/storm_control/sc_hardware/nationalInstruments/nidaqModule.py
@@ -326,7 +326,10 @@ def filmTiming(self, message):
 
             # Get frames per second from the timing functionality. This is
             # a property of the camera that drives the timing functionality.
-            fps = message.getData()["properties"]["functionality"].getFPS()
+            timing_fn = message.getData()["properties"]["functionality"]
+            fps = timing_fn.getFPS()
+            if (fps <= 0.0):
+                raise NidaqModuleException("FPS is <= 0.0 for time base '" + timing_fn.getTimeBase() + "'")
 
             # Calculate frequency. This is set slightly higher than the camere
             # frequency so that we are ready at the start of the next frame.