Continue debugging

pyproject.toml

@@ -11,7 +11,7 @@ classifiers = [
 ]
 description = "FastCS support for the ThorLabs MFF (Motorized Filter Flipper)"
 dependencies = [
-    "fastcs",
+    "FastCS@git+https://github.com/DiamondLightSource/FastCS.git",
     "typer",
 ] # Add project dependencies here, e.g. ["click", "numpy"]
 dynamic = ["version"]

src/thorlabs_mff_fastcs/controllers.py

@@ -67,11 +67,15 @@ class ResponseCache:
     def check_expired(self, time_step):
         if self._last_update is None:
             return True
-        return self.last_update - datetime.now() > time_step
+        delta_t = datetime.now() - self._last_update
+        return delta_t.total_seconds() > time_step
 
     def update_response(self, response):
-        self.response = response
-        self.last_update = datetime.now()
+        self._response = response
+        self._last_update = datetime.now()
+
+    def get_response(self):
+        return self._response
 
 
 cache = ResponseCache()
@@ -115,7 +119,7 @@ async def update(
                 )
                 cache.update_response(response)
             else:
-                response = cache.response
+                response = cache.get_response()
         else:
             response = await controller.conn.send_query(
                 self.cmd(),