PVXS client/server for PVA Protocol

This module provides a low-level PVAccess protocol Client API, Server API, a set of CLI utilities, as well as high-level integration with the EPICS IOC Process Database (aka. QSRV 2)

• VCS: https://github.com/epics-base/pvxs

• Docs: https://epics-base.github.io/pvxs

• Issues (see Reporting a Bug)

• Contributing

Dependencies

• A C++11 compliant compiler

• GCC >= 4.8

• Visual Studio >= 2015 / 12.0

• clang

• EPICS Base >=3.15.1

• libevent >=2.0.1 (Optionally bundled)

• openssl >=3.1.0

• (optional) CMake >=3.10, only needed when building bundled libevent

Download

Releases are published to https://github.com/slac-epics/pvxs-tls/releases. See Release Policy for details.

Getting Started

See Building from Source, and Including PVXS in your application.

With QSRV2 included, all local database records will be served via PVA. For most user IOCs, no further action is necessary.

Contents

• Overview
• Examples
• Building from Source
• Including PVXS in your application

• PVA Network Configuration
  • Environment variables
  • Address Spec.
  • PV Search Process
• IOC Integration
  • IOC shell
  • Adding custom PVs to Server
• QSRV 2
  • Functionality
• Command Line Tools
  • Troubleshooting with Virtual Cable Tester

API References

• Value Container API
  • Common Type Definitions
  • Defining Custom Types
  • Value
  • Array fields
• Client API
  • Configuration
  • Making Requests
  • pvRequest
  • Misc
• Server API
  • SharedPV and StaticSource
  • Data Source
  • Configuration
• Misc
  • Logging
  • Identification
  • Unit-test helpers
  • Utilities
• Details
  • Reporting a Bug
  • Release Policy
  • Expert APIs
  • Contributing
  • Implementation Notes

• Release Notes

Indices and tables

• Index

• Module Index

• Search Page

This document describes version pvxs-1.5.0-spva.20260315-2-g04e71a52 and earlier.