improved logging

python_app/hardware_full/librevna_service.py

@@ -34,6 +34,7 @@ class LibreVnaService:
             raise ValueError(f"Unsupported LibreVnaService backend mode: {self.backend_mode}")
 
         if mode == "mock":
+            logger.info("LibreVNA service using mock backend (mode=mock)")
             self._backend = MockLibreVnaBackend()
             self._using_mock_backend = True
             return
@@ -44,6 +45,7 @@ class LibreVnaService:
                 strict_protocol_version=self.strict_protocol_version,
             )
             self._driver_available = True
+            logger.info("LibreVNA native backend initialized (serial=%s)", self.serial or "auto")
         except Exception as exc:
             # 'native' demands real hardware — never substitute synthetic data.
             if mode == "native":
@@ -68,18 +70,24 @@ class LibreVnaService:
             return
         if self._backend is None:
             return
+        logger.debug("Opening LibreVNA backend (mock=%s)", self._using_mock_backend)
         self._backend.open()
 
     def close(self) -> None:
         """Close backend resources."""
         if self._backend is None:
             return
+        logger.debug("Closing LibreVNA backend")
         self._backend.close()
 
     def configure(self, sweep: RadarSweepModel) -> None:
         """Apply sweep settings to active backend."""
         if self._backend is None:
             raise RuntimeError("LibreVNA backend is not initialized")
+        logger.debug(
+            "Configuring LibreVNA sweep: %s-%s Hz, %s points",
+            sweep.start_hz, sweep.stop_hz, sweep.points,
+        )
         self._backend.configure(sweep)
 
     def read_device_limits(self) -> dict[str, float | int]: