Experimental Physics and
Industrial Control System

On 3/18/20 9:10 AM, Siddons, David via Tech-talk wrote:
> I have an IOC with several array PVs. I do not seem to be able to have them post monitors, so my display screens don't update. Has something changed between 3.14 and 3.15 which might cause this?
> 
> The PVs are declared in the dbd file like this:
> 
>       field(SPCT,DBF_NOACCESS) {
>               prompt("Value")
>              special(SPC_DBADDR)
>              pp(TRUE)
>              extra("void *           spct")
>             }        
> 
>         field(PSPCT,DBF_NOACCESS) {
>                 prompt("Buffer Pointer")
>                 special(SPC_NOMOD)
>                 interest(4)
>                 extra("void *           pspct")
>             }
> 
> and the changed values are posted in record support like this:
> 
> db_post_events(pscal,&(pscal->pspct),DBE_VALUE);
> 
> Am I doing something wrong? This setup used to work in 3.14, although I haven't tried regressing to 3.14 for this code.

Try:

> db_post_events(pscal,&pscal->spct,DBE_VALUE);

by analogy waveformRecord has

> db_post_events(prec, &prec->val, monitor_mask);

note 'val' not 'bptr'.

https://github.com/epics-base/epics-base/blob/25bb966cbc4be1f2a47116a8b9ec940bc2270b12/modules/database/src/std/rec/waveformRecord.c#L325

References:

monitors on array variables Siddons, David via Tech-talk

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