channel-access.server 0.1.1

Channel Access server library

This library contains a low-level binding to the cas library in EPICS base and a thread-safe high level interface to create channel access servers.

Installation

Before installing the library, the environment variables EPICS_BASE and EPICS_HOST_ARCH must be set.

Then the library can be installed with pip:

pip install channel_access.server

Example

This example shows a simple server with a PV counting up:

import time
import channel_access.common as ca
import channel_access.server as cas

with cas.Server() as server:
    pv = server.createPV('CAS:Test', ca.Type.LONG)
    while True:
        pv.value += 1
        time.sleep(1.0)

Documentation

The documentation is available online or it can be generated from the source code with sphinx:

cd /path/to/repository
pip install -e .
python setup.py build_sphinx

Then open build/sphinx/html/index.html.

Get the source

The source code is available in a Github repository:

git clone https://github.com/delta-accelerator/channel_access.server

Tests

Tests are run with pytest:

cd /path/to/repository
pytest -v

To run the tests for all supported version use tox:

cd /path/to/repository
tox