Re: Sequencer handling of waveforms with dynamic size

[Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>]

On Fri, 29 Sept 2023 at 14:46, Ralph Lange <ralph.lange at gmx.de> wrote:

On Fri, 29 Sept 2023 at 13:53, Jure Varlec via Tech-talk <tech-talk at aps.anl.gov> wrote:

Encountering this issue, I'm having a feeling of deja vu, so this might have been discussed before. But I can't find anything.

I found that a sequencer variable assigned to a waveform doesn't seem to know its current size. The pvCount() function always returns the value of NELM (or the array size of the sequencer variable, if smaller), not NORD. Is there some way to obtain the current size of the waveform that I missed? I'm not too keen on creating a separate variable assigned to the NORD field because there's no guarantee that the two variables will be in sync.

Isn't https://epics-sequencer.sourceforge.io/sequencer-2-2/Tutorial.html#process-variable-element-count what you're asking for?

I mean:

So the pvCount() is just returning the number of elements from the CA metadata? I see.

~Ralph