Prevent windfreak from programming a channel if it doesn't need to.

Author: dihm

labscript_devices/Windfreak/blacs_workers.py

@@ -131,11 +131,12 @@ def transition_to_buffered(self, device_name, h5file, initial_values, fresh):
 
                 for i in channels:
                     for sub in self.subchnls:
-                        self.program_static_value(i,sub,data[sub+str(i)])
-                        # update smart cache to reflect programmed values
-                        self.smart_cache['STATIC_DATA'][f'channel {i:d}'][sub] = data[sub+str(i)]
-                        # update final values to reflect programmed values
-                        self.final_values[f'channel {i:d}'][sub] = data[sub+str(i)]
+                        if initial_values[f'channel {i:d}'][sub] != data[sub+str(i)]:
+                            self.program_static_value(i,sub,data[sub+str(i)])
+                            # update smart cache to reflect programmed values
+                            self.smart_cache['STATIC_DATA'][f'channel {i:d}'][sub] = data[sub+str(i)]
+                            # update final values to reflect programmed values
+                            self.final_values[f'channel {i:d}'][sub] = data[sub+str(i)]
 
         return self.final_values