From cc3f7f19df459027bc81d0812e00706c21d25352 Mon Sep 17 00:00:00 2001
From: Joel Collins <joel@jtcollins.net>
Date: Tue, 19 Feb 2019 13:42:17 +0000
Subject: [PATCH] Fixed attaching lock failure

---
 openflexure_microscope/microscope.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/openflexure_microscope/microscope.py b/openflexure_microscope/microscope.py
index 5f01a51b..b2984b72 100644
--- a/openflexure_microscope/microscope.py
+++ b/openflexure_microscope/microscope.py
@@ -41,6 +41,9 @@ class Microscope(object):
         else:
             self.rc = OpenflexureConfig(expand=True)  # Load config from default path
 
+        # Initialise with an empty composite lock
+        self.lock = CompositeLock([])  #: :py:class:`openflexure_microscope.lock.CompositeLock`: Composite lock controlling thread access to multiple pieces of hardware
+
         # Attach initial hardware (may be NoneTypes)
         self.camera = None
         self.stage = None
@@ -63,9 +66,7 @@ class Microscope(object):
         if 'fov' not in self.rc.config:
             self.rc.write({'fov': [0, 0]})
         
-        # Initialise with an empty composite lock
-        self.lock = CompositeLock([])  #: :py:class:`openflexure_microscope.lock.CompositeLock`: Composite lock controlling thread access to multiple pieces of hardware
-
+        
     def __enter__(self):
         """Create microscope on context enter."""
         return self