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

Subject: sequencer and c-code
From: Pierrick Hanlet <hanlet@fnal.gov>
To: Tech Talk <tech-talk@aps.anl.gov>
Date: Sat, 13 Apr 2013 12:38:29 -0500
Hi all,
I'm developing a state machine for a string of superconducting magnets. I'm reading from an
external configuration database (cdb) to pick up fields (alarm, adel, scan, etc) for each of my
PVs as well as the state transition parameters. At present, on each entry block of each state, I
call my c-function to read from the cdb and fill a global struct with the field values for each PV.
Since the list may change in each state, I have arrays for each field.  For example:

PV.name[ndx] and PV.hihi[ndx] which I fill for each state and these are global in a header file.

I also have, in another header file, all of my assignments:
e.g.  SS2cx01[4] is assigned to MICE-SS2-CX-01:RDGK.HIHI in a header file.

What I want to do is to have another c-function, SetPVFields(),  which invokes seq_pvPut().  Since I
call SetPVFields(ssId,State,ndx) in a loop over ndx in my .st file, I want to be able to relate PV.name[ndx]
with pvIndex() inside of my SetPVFields() function.  Is there a way to do this?  One thought that I had is
to create the relationship array between pvIndex and the PV name in the global entry block and use
it inside of SetPVFields(), but I'm not sure of the details and this does not strike me as very elegant.

Thanks,
Pierrick

--
"Whether you think you can or think you can't, either way, you are correct" -- Henry Ford
_______________________________________________________________
Pierrick Hanlet
IIT/Fermilab
+1-630-840-5555 (FNAL)
+1-312-567-5745 (IIT)
+1-630-697-8758/+44-79-48-860-197 (US/UK mobile)

Replies:
Re: sequencer and c-code Benjamin Franksen
Re: sequencer and c-code Wesley Moore

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