RE: EPICS with Raspberry and PyEpics

["Zhang, Tong via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Daniel,

 

I asked my self the same question years ago, and leaned that EPICS base 3.x does not have this ability, since all the PVs are flat distributed in the network, you’ll have to manage all these PVs, say in a table, and do some programming to implement the features you’re after.

 

Since EPICS base 7.x, pvAccess supports the inspection of the tree structure of hosted PV info, e.g. pvlist can list all defined PVs in an IOC. But if you want all the PVs from the network, requesting data from a channel directory service could be a general solution.

 

HTH,

Tong

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of LE-DANIEL Erwann via Tech-talk
Sent: Monday, September 12, 2022 04:18
To: tech-talk at aps.anl.gov
Subject: EPICS with Raspberry and PyEpics

 

[EXTERNAL] This email originated from outside of FRIB

Hello,

 

I’m using a raspberry connected to a network in which are sharing thousand of variables. There are 6 computers connected on this network, and I would like to list all variables available on this network. Is a command to list all the variable available on a network ?

 

Is the command :            “ is Connected(chid) “  can show the list of available variable ?

Or :                                     “ show_cache( print_out=True “  ?

 

Thank you very much.

 

Cordialement,

LE DANIEL Erwann.

 

 

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