pyepics-asyncio

Simple async/await wrapper for PyEpics.

Overview

There are two main types:

• PvMonitor - subscribed to PV updates, get returns last received value.
• Pv - connected but not subscribed, each get requests PV value over network.

Usage

Connect to PV

from pyepics_asyncio import Pv

pv = await Pv.connect("pvname")

Write value to PV

await pv.put(3.1415)

Read value from PV

print(await pv.get())

Monitor PV value updates

with pv.monitor() as mon:
    async for value in mon:
        print(value)

Testing

To run tests you need to have dummy IOC running (located in ioc dir):

• Set appropriate EPICS_BASE path in configure/RELEASE.
• Build with make.
• Go to iocBoot/iocTest/ and run script st.cmd and don't stop it.

In separate shell run poetry run pytest --verbose.