Re: How to get a list of all available PVs

[Pavel Maslov <pavel.masloff@gmail.com>]

Hi Carlos, 

on the IOC side issue dbl (in the epics shell):

epics> dbl

And you'll get all the PVs loaded in to EPICS database.

If you want to get a list of PVs on the client side though, then I don't think that can be implemented as easily as I have descibed above.

You can always ssh to the IOC box and either execute st.cmd and use the dbl command, or use procServ to connect to a running IOC. In this case, I suspect the st.cmd file should contain dbl after the iocInit command. As for the latter, I have never used procServ myself. So just guessing.

On Mon, Dec 17, 2012 at 12:38 PM, Carlos Pascual <cpascual@cells.es> wrote:

Hi,

Sorry for this newbie question... I come from the Tango community, and I am
quite lost with Epics

I am a developer of Taurus [1], a GUI library initially designed to provide
PyQT GUIs on top of Tango. But our goal is to also support other
communication/control systems such as Epics.

I recently implemented some very basic support for epics in Taurus (just a
proof of concept) using PyEpics, and one of the first questions that I came
across is:

How can I obtain a list of all PVs that are available?

... or even better, can I get a list of all PVs whose name contains a certain
prefix?

The reason I want this is that I want to create a browser/selector of PVs. I
do not care that much if the method is slow (I could live with doing it once
and only manually refreshing the list).
But I need the method to be generic, i.e. it should not assume some non-
standard service (such a site-dependent database) to be available.

Is this possible at all?

Cheers,

[1] http://www.tango-controls.org/static/taurus/latest/doc/html/

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 Carlos Pascual Izarra
 Scientific Software Coordinator
 Computing Division
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Best regards,


Pavel Maslov, MS
Controls Engineer at Pulsed power Lab
Efremov Institute for Electro-Physical Apparatus
St. Petersburg, Russia

Mobile: +7 (951) 672 22 19
Landline: +7 (812) 461 01 01