Check if device.set_value is async before calling

Some devices need awaiting and some dont

Author: ptsOSL

src/pytac/data_source.py

@@ -338,8 +338,8 @@ async def get_value(self, field, handle, throw=True):
             FieldException: if the device does not have the specified field.
         """
         device = self.get_device(field)
-        # TODO some devices dont need to be awaited as they are just retrieving stored data,
-        # but other get data from PVs so do, make this better
+        # TODO some devices dont need to be awaited as they are just retrieving stored
+        # data, but others get data from PVs so do, make this better
         val = 0
         if inspect.iscoroutinefunction(device.get_value):
             val = await device.get_value(handle, throw)
@@ -360,4 +360,10 @@ async def set_value(self, field, value, throw=True):
         Raises:
             FieldException: if the device does not have the specified field.
         """
-        await self.get_device(field).set_value(value, throw)
+        device = self.get_device(field)
+        # TODO some devices dont need to be awaited as they are just setting local
+        # data, but others set data to PVs, so do, make this better
+        if inspect.iscoroutinefunction(device.set_value):
+            await device.set_value(value, throw)
+        else:
+            device.set_value(value, throw)