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Subject: RE:Compress Record with input from partial Waveform
From: GAGET Alexis via Tech-talk <tech-talk@aps.anl.gov>
To: Bruno Martins <brunoseivam@gmail.com>, tech-talk <tech-talk@aps.anl.gov>
Date: Mon, 22 Jul 2019 17:14:55 +0000
Hi Bruno
I would have tried to play on the Input instead, trying to replace the waveform by a subArray or adding it between the compress and the waveform. The subArray NELM can be modified online so you can maybe defined it with the "fix amount per run" (if you know it)

Something like that :
record(waveform, "WVF") {
    field(FTVL, "DOUBLE")
    field(NELM, "50")
}
record (calcout, "plouf"){
    field(INPA, "MyFixAmout CPP")
    field(VAL, "A")
    field(OUT, "SubA.NELM PP")   
}

record(subArray, "SubA") {
    field(INP, "WVF CPP")
    field(FTVL, "DOUBLE")
    field(NELM, "5")
    field(MALM, "100")
}

record(compress, "CMP") {
    field(ALG,  "Circular Buffer")
    field(INP,  "SubA CP")
    field(NSAM, "100")
}

Not sure that's work, it's by memory, so consider it as a lead

Cheers
Alexis


De : tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] de la part de Bruno Martins via Tech-talk [tech-talk@aps.anl.gov]
Envoyé : vendredi 19 juillet 2019 23:43
À : tech-talk
Objet : Compress Record with input from partial Waveform

Hi folks,

Is there a way to force compress to take only NORD elements from its INP waveform? I have a big waveform that only has some of its data initialized (a fixed amount per "run"), and I want to accumulate this initialized data in a circular buffer. Has anyone made something similar work? Do I need to interpose an acalcout between the two (which I tried but didn't seem to work)?

Please see example below.

Thanks!

Bruno

$ cat test.db
record(waveform, "WVF") {
    field(FTVL, "DOUBLE")
    field(NELM, "50")
}

record(compress, "CMP") {
    field(ALG,  "Circular Buffer")
    field(INP,  "WVF CP")
    field(NSAM, "100")
}

$ softIoc -d test.db
...

$ caget CMP.NUSE  # returns 50, I expected 0 (no PINI set)...
CMP.NUSE                       50

$ caput CMP.RES 1  # let's reset compress
Old : CMP.RES                        0
New : CMP.RES                        0

$ caget CMP.NUSE
CMP.NUSE                       0

$ caput -a WVF 5 1 2 3 4 5
Old : WVF 50 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
New : WVF 50 1 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

$ caget WVF.NORD
WVF.NORD                       5

$ caget CMP.NUSE   # I expected 5
CMP.NUSE                       50

$ caget CMP
CMP 100 1 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

$ caput -a WVF 5 6 7 8 9 10
Old : WVF 50 1 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
New : WVF 50 6 7 8 9 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

$ caget WVF.NORD
WVF.NORD                       5

$ caget CMP.NUSE  # I expected 10
CMP.NUSE                       100

$ caget CMP # I expected 1,2,3,4,5,6,7,8,9.10
CMP 100 1 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 7 8 9 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

References:
Compress Record with input from partial Waveform Bruno Martins via Tech-talk

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