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<== Date ==> <== Thread ==>
Subject: RE: Store long strings in EPICS record.
From: Mark Rivers <[email protected]>
To: "'David Michel'" <[email protected]>, "[email protected]" <[email protected]>
Date: Tue, 25 Feb 2014 19:49:58 +0000

The path can be set in many ways.  It can be set via a Channel Access put from any CA client.  For example, it could be entered from a normal medm text entry widget, etc.

 

In this case the user entered the components of the file path (path, file name, file number, C-style format string to construct file name from the preceding values) in medm and the IOC driver constructed the full path string, which is what I showed in my previous post.  The IOC driver set that value in a waveform record, via callbacks.  That record has SCAN=I/O Intr so it updates when the driver changes it.

 

Mark

 

 

From: David Michel [mailto:[email protected]]
Sent: Tuesday, February 25, 2014 11:37 AM
To: Mark Rivers; [email protected]
Subject: RE: Store long strings in EPICS record.

 

Hi Mark,

 

In your example, looks like you're using a filepath. I'm confused as to where you specify that path in the waveform record in the first place?

 

David

 

 


You cannot store a long string in a stringin record.
 
However, you can store a long string in a waveform record with FTVL=CHAR.  caget, medm and other clients know how to display this correctly.
 
Here is an example:
 
 
corvette:~>cainfo GSE-PIL1:cam1:FullFileName_RBV
GSE-PIL1:cam1:FullFileName_RBV
    State:            connected
    Host:             164.54.160.161:5064
    Access:           read, write
    Native data type: DBF_CHAR
    Request type:     DBR_CHAR
    Element count:    256
 
corvette:~>caget -S GSE-PIL1:cam1:FullFileName_RBV
GSE-PIL1:cam1:FullFileName_RBV /cars5/Data/gpd_user/data/idc/2014/run1/eng/testing/images/testing_1/S045/stubbs_test_1002.tif
 
Mark

 

References:
RE: Store long strings in EPICS record. David Michel
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