python-pyepics

Epics Channel Access for Python

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.