Epics Applications with PyEpics¶
EpicsApps is a collection of Epics Applications written in python, using the pyepics library for interacting with Epics devices through Channel Access. Many of these are GUI Applications, built with wxPython, and some use other Python libraries for interacting wih data. While a part of the goal for this project is to demonstrate how one can build complex programs with pyepics, the applications here are intended to be useful to beamline scientists and end-users at facilities such as synchrotrons that use the Epics control system.
The main applications included in EpicsApps include
Strip Chart Display: A GUI application to show a “live plot” of the recent history of a set of PV values. Time ranges and ranges for Y values can be changed, and data can be saved to plain text files.
Area Detector Display: A GUI application to control and view images from an Epics Area Detector. Controls for stqrting acquistion, changing image mode, exposure time, and frame rate can also be included using a simple configuration file. The end-user can change color-table and contrast level, as well as use a Zoom Box to enhance portions of the image.
Epics Instruments: A GUI application to organize PVs, by grouping them into user-named “Instruments”. Each Instrument can have a set of named positions that the end-user can save and restore.
PV Logger: A command-line and GUI application to collect and log time-series of a handful of PV values into plain text files in a folder in a manner that can be easily reviewed.
Sample Microscope: A GSECARS-specific GUI for moving a set of motors for a sample stage, grabbing microscope images from a webcam, and saving named positions.