open62541 is an open source C (C99) implementation of OPC UA licensed under the Mozilla Public License v2.0.
At Hannover Fair 2019, we demonstrated the open62541 Realtime OPC UA PubSub Publisher at the booth of the OPC Foundation. The code is now released on Github as well.
The measurements can be replicated on RTOS and Linux (with the RT-Preempt patches) environments. The example code can be found here.
This video on the demonstrator from Hannover Fair explains
the approach behind:
Nightly single-file distributions and MSVS Windows binaries can be found here.
Single-file distribution and full source code: