BERK DDS — a pure-Rust, wire-compatible DDS/RTPS stack
A sovereign networking stack, wire-compatible with Eclipse CycloneDDS and eProsima Fast-DDS, with application logic written in the BERK language. Fuses QoS events with domain safety math into a single prioritised safety decision.
Enters your existing systems at low risk
The pure-Rust DDS/RTPS stack is wire-compatible with Eclipse CycloneDDS and eProsima Fast-DDS — the two primary ROS 2 RMWs. Replacing foreign middleware does not mean rewriting your system.
Wire-compatibility
Live-verified interoperability: speaks on the same wire, in the same network, with existing ROS 2 / DDS nodes. Migration can be low-risk and incremental.
Safety math ⊕ QoS
QoS liveliness, deadline and reliability events fuse with separation distance, ASIL, FDIR and risk math into one prioritised decision: stop category, safe-mode, escalation.
Equivalence gate
The field-going .berk source and its Rust mirror are compared on shared input vectors in every CI run. If outputs differ, the test breaks — source–mirror equivalence is an executable invariant.
A bare-metal board talking to three independent DDS stacks on a real wire
On an STM32F746G-DISCO (Cortex-M7) under Zephyr V4.4, the allocator-free no_std
BERK DDS core (berk-dds-core) published over real Ethernet using standard RTPS.
Discovery and publication
The SPDP announcement is bit-identical to the golden; the board's publication was discovered and received by
BerkROS, Eclipse CycloneDDS 11.0.1 and ROS 2 Humble (rmw_cyclonedds):
ros2 topic echo → data: merhaba BERK.
Reliable data plane
The board decoded incoming ACKNACKs and retransmitted deliberately skipped samples; the ROS 2 RELIABLE reader received a lossless, in-order stream (89→108, no gaps).
10 concurrent topics
The real messages of 10 sectors were published as 10 concurrent, separately typed topics; ROS 2 discovered
all of them with the right types and decoded them field by field through the berk_msgs package.
docs/DDS_Donanim_Kaniti_Yolculugu.md, docs/interop_fastdds/README.md.Sector math, implemented to standard
ADAS, avionics (ARINC 429), medical, space, telecom, railway, industrial and finance domain modules — validated by 681 dds:: unit tests.