explicitly load the bwtek library

py_raman_chef/grpc_interface/server.py

+import ctypes
 import json
+import os
 
 import grpc
 import logging
@@ -17,11 +19,23 @@ logger = logging.getLogger(__name__)
 
 
 class SpectrometerServicer(RamanChefServicer):
-    def startup_procedure(self, default_channel):
+    def startup_procedure(self, default_channel, bwtek_dll_path: str = ""):
         self.default_channel = default_channel
-        self.spectrometer_configs = initialize_spectrometer()
-        logger.debug("Initialized %s spectrometers", len(self.spectrometer_configs))
-        set_temperatures(self.spectrometer_configs)
+        if bool(os.environ.get("BWTEK_MOCK", "False")):
+            self.bwtek_dll = None
+        else:
+            self.bwtek_dll = ctypes.CDLL(bwtek_dll_path)
+
+        self.spectrometer_configs = initialize_spectrometer(
+            bwtek_dll=self.bwtek_dll,
+        )
+        logger.debug(
+            "Initialized %s spectrometers", len(self.spectrometer_configs)
+        )
+        set_temperatures(
+            self.spectrometer_configs, bwtek_dll=self.bwtek_dll
+        )
+        logger.debug("Set temperatures according to EEPROM values")
 
     def record_spectrum(
             self: Self,
@@ -33,6 +47,7 @@ class SpectrometerServicer(RamanChefServicer):
             request.duration,
             request.laser_power,
             self.default_channel,
+            bwtek_dll=self.bwtek_dll
         )
         response = RecordSpectrumResponse(
             spectrometer_config_json=json.dumps(