Experimental Physics and
Industrial Control System

"Mark Rivers" <[email protected]> · Tue, 1 Dec 2009 12:43:44 -0600

That will work fine.  Here is some code from one of my SNL programs:

...
int     mcaROILow[MAX_ROIS];
assign  mcaROILow to {"","","","","","","","","","","","","","","","",
...
                      "","","","","","","","","","","","","","","",""};
monitor mcaROILow; evflag  mcaROILowMon; sync mcaROILow mcaROILowMon;
...

    state init {
        when() {
            ...
            for (i=0; i<nDetectors; i++) {
            ...
               for (j=0; j<MAX_SCAS; j++) {
                   k = i*MAX_SCAS + j;
                   sprintf(temp, "%s%s%d.R%iLO", prefix, mca, det, j);
                   pvAssign(mcaROILow[k], temp);
                   pvMonitor(mcaROILow[k]);
                   ...
               }
            }

...
    state monitor_changes {
...
        when(efTestAndClear(mcaROILowMon) ||
efTestAndClear(mcaROIHighMon)) {
            /* Copy ROIs to SCAs */
            for (i=0; i<nDetectors; i++) {
                for (j=0; j<MAX_SCAS; j++) {
                    k = i*MAX_SCAS + j;
                    chan = mcaROILow[k];
                    if (chan < 0) chan = 0;
                    dxpSCALow[k] = chan;
                    pvPut(dxpSCALow[k]);
                    ...
                }
            }
...

Mark

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Kim, Kukhee
Sent: Tuesday, December 01, 2009 12:17 PM
To: [email protected]
Subject: SNL Question: dynamic assignment and event flag

Dear All;

I have a simple question about the dynamic assignment in SNL.
I have array variables and those variables have been assigned PVs as the
followings.

	double	pvs[50];
 	assign pvs to { "pv1", ... , "pv50"};
	monitor pvs;
	evflag mon_flag;
	sync pvs mon_flag;

I need to replace some of PVs during runtime. Thus, I am going to use
dynamic assignment like as the followings.
	pvAssign(pvs[i], pv_name_string[i]); pvMonitor(pvs[i]);

My question is the following:
If I replaced some PVs in the array with the dynamic assignment, Is the
sync statement on the event flag still valid?
I am going to put the pvMonitor statement for the replaced things, Is it
enough to make the event flag keep working?

Thank you.
Best regards,
Kukhee

--------------------------------------------
Kukhee Kim
SLAC National Accelerator Laboratory
2575 Sand Hill Rd, MS 50
Menlo Park, CA 94025
Email: [email protected]
Phone: (650)926-4912

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System