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<== Date ==> <== Thread ==>
Subject: Re: Issue of PV callback of PyEpics
From: Matthew Newville via Tech-talk <[email protected]>
To: "Zhang, Tong" <[email protected]>
Cc: EPICS Tech Talk <[email protected]>
Date: Mon, 18 Feb 2019 16:49:42 -0600


On Mon, Feb 18, 2019, 4:30 PM Zhang, Tong via Tech-talk <[email protected] wrote:
Hello,

When I work with PyEpics.PV object, I've found sometimes the value of 'char_value' in the added callback just return what 'value' meant to be. I tried with a MBBI type record, it should be expected as a string in the callback, but an integer was got. Could somebody let me know what is the possible reason?

An mbbi record definitely should return the appropriate string in 'char_value' in a callback.  That does need to be able to lookup the CTRL values, especially including the enumeration strings.

Can you do 
    mypv = epics.PV(pvname)
    print(mypv.get(as_string=True))
    print(mypv.get_info())

and see the enumeration strings?

Matt
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Re: Issue of PV callback of PyEpics Tong Zhang via Tech-talk
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Issue of PV callback of PyEpics Zhang, Tong via Tech-talk
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