Added polling of position to OmsVME58Motor every 0.5 seconds.

src/ophyd_async/tango/device_controllers/omsvme58.py

@@ -76,8 +76,15 @@ def update_watchers(current_position: float):
         try:
             await self.position.set(new_position)
             await asyncio.sleep(0.1)
+            counter = 0
             while await self._state.get_value() == DevState.MOVING:
+                # Update the watchers with the current position every 0.5 seconds
+                if counter % 5 == 0:
+                    current_position = await self.position.get_value()
+                    update_watchers(current_position)
+                    counter = 0
                 await asyncio.sleep(0.1)
+                counter += 1
         finally:
             if self.position.is_cachable():
                 self.position.clear_sub(update_watchers)