xavspm / pythonsoftioc

Embed an EPICS IOC in a Python process

pythonSoftIOC

This module allows an EPICS IOC with Python Device Support to be run from within the Python interpreter. Records can be programmatically created and arbitrary Python code run to update them and respond to caputs. It supports cothread and asyncio for concurrency. PVs are served over Channel Access and PVAccess.

PyPI	pip install softioc
Source code	https://github.com/dls-controls/pythonSoftIOC
Documentation	https://dls-controls.github.io/pythonSoftIOC
Changelog	https://github.com/dls-controls/pythonSoftIOC/blob/master/CHANGELOG.rst

A simple example of the use of this library:

# Import the basic framework components.
from softioc import softioc, builder
import cothread

# Set the record prefix
builder.SetDeviceName("MY-DEVICE-PREFIX")

# Create some records
ai = builder.aIn('AI', initial_value=5)
ao = builder.aOut('AO', initial_value=12.45, on_update=lambda v: ai.set(v))

# Boilerplate get the IOC started
builder.LoadDatabase()
softioc.iocInit()

# Start processes required to be run after iocInit
def update():
    while True:
        ai.set(ai.get() + 1)
        cothread.Sleep(1)


cothread.Spawn(update)

# Finally leave the IOC running with an interactive shell.
softioc.interactive_ioc(globals())

See https://dls-controls.github.io/pythonSoftIOC for more detailed documentation.