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<== Date ==> <== Thread ==>

Subject: New EPICS sequencing tool soon available.
From: "Josep A. Perlas" <perlas@ifae.es>
To: "EPICS collaboration" <tech-talk@aps.anl.gov>
Cc: "Greg White" <greg@slac.stanford.edu>, "Jeff Hill" <johill@lanl.gov>, "Bob Dalesio" <dalesio@luke.atdiv.lanl.gov>, "William Lupton" <wlupton@keck.hawaii.edu>, "Marty Kraimer" <mrk@aps.anl.gov>, "Steve Hunt" <Steven.Hunt@psi.ch>
Date: Wed, 22 Sep 1999 16:29:42 +0200
Dear collaborators,
 
I would like to announce that a new sequencing tool is being developed  (and nearly finished
in its first public version) at Barcelona. Its name is FSQT (Finite State machine Queuing Tool).
This tool solves most of the problems of the current Sequencer and adds far more flexibility
and power. A summary of its features is shown below (from a compilation of William Lupton
SNL wish list and others):
 
Major additions:
===========
 
-Permits HIERARCHICAL state machine designs.
-PORTABILITY to be executed in any (supported) host computer (e.g. Unix).
-Includes a GRAPHICAL FSM editor with skeleton-code generation.
-Optionally permits several state machines share a single task.
-It is much EASIER TO DEBUG applications (no intermediate engine present,
                                                           and no multi-tasking used).
-Provides FULL C-LANGUAGE SUPPORT, including ISRs.
 
Minor additions:
===========
 
-Allows pre and post-actions to be executed.
-Supports Channel Access put with callback.
-Allows an action not to reset timers.
 
I will be giving a presentation at the next EPICS meeting in Trieste on why we need this tool,
its features in detail and its current state with a proven example developed in our lab.
Preliminary information, some documentation and a simple trial application can be found at
 
 
for those really interested in this subject. We also have a paper in the ICALEPCS'99.
Although it is still work going on to fully finish/test FSQT, we have found it very powerful
and easy to use in our test bench. If you want to try it, please go to the above URL and
see it by yourself (sorry but the example provided in this address doesn't have hierarchical
states (yet), we will update it soon; if you want the latest release please contact me).
 
Please send comments, questions, criticisms and suggestions.
_____________________________________________________
Dr. Josep A. Perlas - Control System and Power Technology
Lab. Llum Sincrotro - IFAE ------------  Tel: (+34 93)581.28.38
Edifici Cn, Campus UAB     ------------   Fax: (+34 93)581.32.13
E-08193 Bellaterra (Barcelona) SPAIN ---- email: perlas@ifae.es
_____________________________________________________

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