Re: How to put the contents of a file in a waveform record

["Cobb, Tom \(DLSLtd,RAL,LSCI\) via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Shuei,

Thanks for that, I'll take a look.

Thanks,

Tom

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Shuei YAMADA via Tech-talk <tech-talk at aps.anl.gov>
Sent: 08 December 2021 04:28
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: How to put the contents of a file in a waveform record

 

Hi Tom,

We have such a device support at J-PARC, which you can find in github:

https://github.com/shuei/epics-textfile

It supports longin, ai and waveform records, and you could write something like:

record(waveform, "TEST") {
    field(DTYP, "Text File")
    field(PINI, "YES")
    field(INP,  "@/relative/or/absolute/path/to/file")
    field(NELM, "5")
    field(FTVL, "LONG")
}

best regards,
Shuei

> Hi all,
>
> Has anyone written a support module that puts the contents of a file in a waveform record? I was going to do this in an aSub record, but it occurred to me that one of the synApps modules might contain device support for something like this.
>
> I was hoping to write something like:
>
>     record(waveform,"TEST") {
>         field(DTYP,"from_file")
>         field(INP, "/path/to/file")
>     }
>
> then be able to caget TEST and see the contents of the file.
>
> Has anyone written something like this?
>
> Thanks,
> Tom

--
                 ----------------------------------------------------
                 Shuei Yamada,
                 High Energy Accelerator Research Organization (KEK)
                 mailto:shuei at post.kek.jp
                 ----------------------------------------------------

 

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