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Date: 2026-06-02

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Summary

MotorBridge 0.4.1 aligns the public ABI, Python binding, C++ binding, and documentation API surface. It adds ABI metadata discovery, completes C++ RobStride wrapper parity with Python, and introduces bindings/api_surface.json as the canonical API surface checklist.

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Version Alignment

ComponentVersion
Git release tag when publishedv0.4.1
Rust workspace crates0.4.1
Python package0.4.1
C++ package metadata0.4.1

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Key Changes

  • Added C ABI metadata functions:
    • motor_abi_version()
    • motor_abi_capabilities_json()
  • Added Python metadata helpers:
    • motorbridge.abi_version()
    • motorbridge.abi_capabilities()
  • Added C++ metadata helpers:
    • motorbridge::abi_version()
    • motorbridge::abi_capabilities_json()
  • Completed C++ RobStride wrapper parity for:
    • robstride_ping_host_id
    • robstride_get_param_f32_host_id
    • robstride_get_fault_report
    • robstride_set_active_report
  • Added bindings/api_surface.json and API surface regression coverage.

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Required Checks

cargo fmt --all -- --check
cargo check -p motor_abi
cargo build -p motor_abi
PYTHONPATH=bindings/python/src python3 -m compileall bindings/python/src/motorbridge
Python API surface and metadata smoke: 
PYTHONPATH=bindings/python/src python3 - <<'PY'
import motorbridge

assert motorbridge.get_version() == "0.4.1"
assert motorbridge.abi_version() == "0.4.1"
caps = motorbridge.abi_capabilities()
assert caps["abi"]["version"] == "0.4.1"
assert "dm-serial" in caps["transports"]
assert "robstride" in caps["vendors"]
print("abi metadata ok")
PY

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Expected Version Smoke

motor_cli 0.4.1
ws_gateway 0.4.1
motorbridge 0.4.1
motor_abi 0.4.1