pyspw_rmap

pyspw_rmap provides Python bindings and CLI tooling for the spw_rmap SpaceWire/RMAP helper library. It exposes the same TCP client that the C++ API uses, so you can connect to a SpaceWire-over-TCP bridge, describe a target node, and issue synchronous read/write transactions from pure Python.

Installation

The package is published as a scikit-build-core wheel, so CMake, Ninja (or another generator), and a C/C++ compiler must be available. Once the build prerequisites are satisfied, install it like any other PyPI package:

python -m pip install pyspw_rmap

Command-line helpers are included automatically and become available as spwrmap and spwrmap_speedtest.

Quick start

from pyspw_rmap import TargetNode, SpwRmapTCPNode

target = TargetNode(
    logical_address=0x32,
    target_spacewire_address=[0x06, 0x02],
    reply_address=[0x01, 0x03],
)

with SpwRmapTCPNode(ip_address="192.168.1.100", port="10030") as node:
    node.connect()
    node.write(target, 0x44A200D4, [0, 0, 0, 1])
    data = node.read(target, 0x44A200D0, 4)
    print(list(data))
  • TargetNode represents the destination node (logical address, hop list, and return path).
  • SpwRmapTCPNode owns the SpaceWire-over-TCP connection and performs the request/reply handshake.
  • Calls are synchronous: they block until a reply frame is parsed or the default 100 ms timeout elapses. Pass timeout= to read or write to override it. Catch the raised exception to handle transport or timeout errors explicitly.
  • Blocking calls release the Python GIL, so other Python threads can run while a request is in flight. The binding does not provide an asyncio wrapper.

Call disconnect() to close the TCP connection explicitly, or use the context manager as shown above. Destruction also closes the connection.

Building from source

If you prefer installing from a checkout, clone the main repository and let pip build the wheel locally:

python -m pip install .

The build steps mirror the ones documented in the root README.md. The pyspw_rmap wheel bundles the Python module, the C++ extension, and the CLI entry points, so no extra copy steps are required after pip finishes.

Testing a source build

After installing the checkout, run the binding smoke tests with:

python -m unittest tests/test_python_bindings.py

These tests cover module import, target-node field conversion, client construction and context management, and the debug-control functions. They do not require a SpaceWire-over-TCP server.

Key dates

PyPI data
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  • Released:
Latest release

1 maintainer

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License

MIT License (MIT)

Requires

Python >=3.10

Tags

spacewire rmap spacelink tcp bindings

Classifiers

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