MONTHLY PROGRESS REPORT

CONTRACTOR:           University of California at Berkeley
TITLE:                Open Control Platform
REPORT PERIOD:        7/15/00 - 8/15/00
SPONSOR:              Boeing Subcontract, Air Force Research Laboratory (AFRL)
REPORT PREPARED BY:   Edward A. Lee


1.  Research Status

Christopher Hylands downloaded the OCP pre-release from Boeing and
provided Boeing with feedback on the configuration. Sonia Sachs began
experimenting with Tao and understanding the higher-level wrappers for
the event channel that are provided by the OCP classes. An immediate
problem she encountered is that the wrappers do not have a
corresponding IDL definition. She was hoping to implement in Java the
interface to the Event Channel, using idltojava to convert the IDLs
defined for communication and administration.Her plan was to use the
generated stubs and skeletons to implement, in Java, suppliers and
consumers that communicate via Event Channel to OCP suppliers and
consumers. Brian Mendel at Boeing was very helpful in providing
pointers to the wrapper code that contains the necessary sequence of
calls to the lower level CORBA IDL interfaces. The longer term plan is
to create an IDL for the wrappers.


 Meetings
 ========

* August 14, 2000: Informal meeting with Helen Gill.  We gave an overview
  of progress on the Ptolemy II effort, including demonstrating the
  graphical user interface, and an overview of work in time-driven models
  for hard-real-time systems.