fix(npoint): retry on wait_for_connection

csaxs_bec/devices/npoint/npoint.py

@@ -448,26 +448,14 @@ class NPointAxis(Device, PositionerBase):
             self.high_limit_travel.put(limits[1])
 
     def wait_for_connection(self, timeout: float = 30.0) -> bool:
-        self.controller.on(timeout=timeout)
-        self._update_setpoint_from_readback()
-
-    def _update_setpoint_from_readback(self):
-        """
-        The setpoint is only stored locally. After a restart,
-        we need to update it to match the current readback value.
-        """
-        for attempt in range(5):
+        for _ in range(5):
             try:
-                self.user_setpoint.setpoint = self.readback.get()
-            except Exception as e:
-                logger.warning(
-                    f"NPointAxis {self.name}: Failed to update the setpoint from the readback value on attempt {attempt+1} during startup: {e}"
-                )
+                self.controller.on(timeout=timeout)
+                self._update_setpoint_from_readback()
+            except TimeoutError:
+                self.controller.off(update_config=False)
                 time.sleep(1)
             else:
-                logger.info(
-                    f"NPointAxis {self.name}: Successfully updated the setpoint from the readback value on attempt {attempt+1} during startup."
-                )
                 break
         else:
             raise TimeoutError(
@@ -475,6 +463,13 @@ class NPointAxis(Device, PositionerBase):
                 f"Try to reload the config and if the problem persists, check the connection to the nPoint controller "
                 f"and ensure that it is powered on and accessible at {self.controller._socket_host}:{self.controller._socket_port}."
             )
+        
+    def _update_setpoint_from_readback(self):
+        """
+        The setpoint is only stored locally. After a restart,
+        we need to update it to match the current readback value.
+        """
+        self.user_setpoint.setpoint = self.readback.get()
 
     def destroy(self):
         """Make sure to turn off the controller socket on destroy."""