cantools 2.3.0

CAN BUS tools.

About

CAN BUS tools.

• DBC file mangling.

Installation

pip install cantools

Example usage

See the test suite: https://github.com/eerimoq/cantools/blob/master/tests/test_cantools.py

An example parsing and using a small DBC-file:

>>> import cantools
>>> from pprint import pprint
>>> db = cantools.db.File()
>>> db.add_dbc_file('tests/files/motohawk.dbc')
>>> pprint(db.messages)
[message("ExampleMessage", 0x1f0, 8, "Example message used as template in MotoHawk models.")]
>>> example_message = db.messages[0]
>>> example_message.comment
'Example message used as template in MotoHawk models.'
>>> pprint(example_message.signals)
[signal("Temperature", 7, 12, "big_endian", "signed", 0.01, 250, 229.53, 270.47, "degK", None, None),
 signal("AverageRadius", 1, 6, "big_endian", "unsigned", 0.1, 0, 0.0, 5.0, "m", None, ""),
 signal("Enable", 0, 1, "big_endian", "unsigned", 1.0, 0, 0.0, 0.0, "-", None, None)]
>>> pprint(db.ecus)
[ecu("PCM1", None)]
>>> db.version
'1.0'
>>>

The example continues encoding a message and sending it on a CAN bus using the python-can package.

>>> import can
>>> can_bus = can.interface.Bus()
>>> data = example_message.encode({'Temperature': 250.1, 'AverageRadius': 3.2, 'Enable': 1})
>>> message = can.Message(arbitration_id=example_message.frame_id, data=data)
>>> can_bus.send(message)
>>>

Contributing

1. Fork the repository.

2. Implement the new feature or bug fix.

3. Implement test case(s) to ensure that future changes do not break legacy.

4. Run the test suite for Python 2 and Python 3. Make sure all tests pass.

   python setup.py test
   python3 setup.py test

5. Create a pull request.