python-can
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The C\ ontroller A\ rea N\ etwork is a bus standard designed
to allow microcontrollers and devices to communicate with each other. It
has priority based bus arbitration and reliable deterministic
communication. It is used in cars, trucks, boats, wheelchairs and more.
The can package provides controller area network support for
Python developers; providing common abstractions to
different hardware devices, and a suite of utilities for sending and receiving
messages on a can bus.
The library currently supports Python 3.6+ as well as PyPy 3 and runs
on Mac, Linux and Windows.
============================== ===========
Library Version Python
2.x 2.6+, 3.4+
3.x 2.7+, 3.5+
4.x (currently on develop) 3.6+
============================== ===========
Features
- common abstractions for CAN communication
- support for many different backends (see the
docs <https://python-can.readthedocs.io/en/stable/interfaces.html>__) - receiving, sending, and periodically sending messages
- normal and extended arbitration IDs
- limited
CAN FD <https://en.wikipedia.org/wiki/CAN_FD>__ support - many different loggers and readers supporting playback: ASC (CANalyzer format), BLF (Binary Logging Format by Vector), CSV, SQLite and Canutils log
- efficient in-kernel or in-hardware filtering of messages on supported interfaces
- bus configuration reading from file or environment variables
- CLI tools for working with CAN buses (see the
docs <https://python-can.readthedocs.io/en/stable/scripts.html>__) - more
Example usage
.. code:: python
# import the library
import can
# create a bus instance
# many other interfaces are supported as well (see below)
bus = can.Bus(interface='socketcan',
channel='vcan0',
receive_own_messages=True)
# send a message
message = can.Message(arbitration_id=123, is_extended_id=True,
data=[0x11, 0x22, 0x33])
bus.send(message, timeout=0.2)
# iterate over received messages
for msg in bus:
print("{:X}: {}".format(msg.arbitration_id, msg.data))
# or use an asynchronous notifier
notifier = can.Notifier(bus, [can.Logger("recorded.log"), can.Printer()])
You can find more information in the documentation, online at
python-can.readthedocs.org <https://python-can.readthedocs.org/en/stable/>__.
Discussion
If you run into bugs, you can file them in our
issue tracker <https://github.com/hardbyte/python-can/issues>__ on GitHub.
There is also a python-can <https://groups.google.com/forum/#!forum/python-can>__
mailing list for development discussion.
Stackoverflow <https://stackoverflow.com/questions/tagged/can+python>__ has several
questions and answers tagged with python+can.
Wherever we interact, we strive to follow the
Python Community Code of Conduct <https://www.python.org/psf/codeofconduct/>__.
Contributing
See doc/development.rst <doc/development.rst>__ for getting started.