Epics Channel Access for Python

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  • License: Free for non-commercial use, Freely Distributable (Epics Open License)
  • Author: Matthew Newville
  • Tags epics
  • Requires: Python >=3.7
  • Provides-Extra: all, doc, test
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Project description

Python Interface to the Epics Channel Access protocol of the Epics control system. PyEpics provides 3 layers of access to Channel Access (CA):

1. a light wrapping of the CA C library calls, using ctypes. This provides a procedural CA library in which the user is expected to manage Channel IDs. It is mostly provided as a foundation upon which higher-level access is built. 2. PV() (Process Variable) objects, which represent the basic object in CA, allowing one to keep a persistent connection to a remote Process Variable. 3. A simple set of functions caget(), caput() and so on to mimic the CA command-line tools and give the simplest access to CA.

In addition, the library includes convenience classes to define Devices – collections of PVs that might represent an Epics Record or physical device (say, a camera, amplifier, or power supply), and to help write GUIs for CA.

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