DOC Help transition from PyEpics to ophyd - Githubissues

BCDA-APS / bluesky_training

Bluesky training, including instrument package

https://bcda-aps.github.io/bluesky_training/

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DOC Help transition from PyEpics to ophyd #146

Open prjemian opened 1 year ago

prjemian commented 1 year ago

Users may have some code that uses PyEpics for control. Show how PyEpics structures can be translated to ophyd.

Includes the shifts in thinking:

from caget PV calls to an object structure (ophyd Signal or Device)
handling connections (and events)
responding to CA monitor events
shift polling loops to ophyd callbacks

What is the value added? Will it be easy to see?

How to use cached values or demand fresh ones from the IOC.

How to control the data type (string, not string, or default)?

Timeouts?

Enums, number or string - How to get the other one?

prjemian commented 1 year ago

Note Signal.set(value) returns a Status object, Signal.put(value) is lower level.