Merged in cbillington/labscript_devices/feature (pull request labscript-suite#12)

Added DummyDevice

Approved-by: Philip Starkey <philip.starkey@monash.edu>

Author: philipstarkey

DummyPseudoclock.py

@@ -0,0 +1,63 @@
+#####################################################################
+#                                                                   #
+# /labscript_devices/DummyPseudoclock.py                            #
+#                                                                   #
+# Copyright 2017, Joint Quantum Institute                           #
+#                                                                   #
+# This file is part of labscript_devices, in the labscript suite    #
+# (see http://labscriptsuite.org), and is licensed under the        #
+# Simplified BSD License. See the license.txt file in the root of   #
+# the project for the full license.                                 #
+#                                                                   #
+#####################################################################
+
+# This file represents a dummy labscript device for purposes of testing BLACS
+# and labscript. The device is a PseudoclockDevice, and can be the sole device
+# in a connection table or experiment.
+
+
+from labscript_devices import labscript_device, BLACS_tab, BLACS_worker
+from labscript import PseudoclockDevice
+
+@labscript_device
+class DummyPseudoclock(PseudoclockDevice):
+
+    description = 'Dummy pseudoclock'
+    clock_limit = 1e6
+
+    def __init__(self, name='dummy_pseudoclock', BLACS_connection='dummy_connection', **kwargs):
+        self.BLACS_connection = BLACS_connection
+        PseudoclockDevice.__init__(self, name, None, None, **kwargs)
+
+    def generate_code(self, hdf5_file):
+        group = self.init_device_group(hdf5_file)
+
+
+from blacs.device_base_class import DeviceTab, define_state, MODE_BUFFERED
+from blacs.tab_base_classes import Worker
+
+
+@BLACS_tab
+class DummyPseudoclockTab(DeviceTab):
+    def initialise_workers(self):
+        worker_initialisation_kwargs = {}
+        self.create_worker("main_worker", DummyPseudoclockWorker, worker_initialisation_kwargs)
+        self.primary_worker = "main_worker"
+
+    @define_state(MODE_BUFFERED, True)  
+    def start_run(self, notify_queue):
+        notify_queue.put('done')
+
+@BLACS_worker
+class DummyPseudoclockWorker(Worker):
+    def program_manual(self, values):
+        return {}
+
+    def transition_to_buffered(self, device_name, h5file, initial_values, fresh):
+        return {}
+    
+    def transition_to_manual(self):
+        return True
+
+    def shutdown(self):
+        return