Dynamic PV creation

[zkuplj]

Hi all,

I am working on an application, where I would need to create a PV dynamically inside the server (by itself or triggered from the outside).

I am aware of the dynamic_pv.py example which creates a new PV at "$ caget" command, but I would like to know if there is a function or an example that allows me to dynamically create a PV on the server? That is, after the server is started, I would like to create additional PVs when desired. The PV would ideally be of a similar structure as if the function SimpleServer.createPV() created it. I would then use "caget" and "caput" to modify its value from outside or I would modify the PV value from inside the server.

[mennodoor]

Hi zkuplj,

it may not be exactly what you are looking for, but a little more than the dynamic PV example:

https://github.com/mennodoor/epics-relay

Cheers menno

[xiaoqiangwang]

The connection between SimpleServer.createPV created PVs and Driver class is only established once when in Driver.init. This limited can be overcome.

But it still would not be as dynamic as @mennodoor's implementation does. There the PVs are created on demand, not proactively by the server.

[zkuplj]

Thank you, this is really helpful! I think with a bit of modification, @mennodoor's implementation can do approximately what I need.