DLE/STX/ETX is a packet framing algorithm, used by some devices (such as Metlink LED passenger information displays) to transmit data as packets over a serial medium. This algorithm delimits data using DLE, STX, and ETX control codes.
Packets begin with a DLE STX sequence, follow with a byte-stuffed data stream (all DLE bytes in the data are conveyed as DLE DLE), and end with a DLE ETX sequence.
The dlestxetx module provides functions to encode data into packets:
>>> from dlestxetx import encode >>> encode(b'\x01\x10\x05') b'\x10\x02\x01\x10\x10\x05\x10\x03'
decode packets into data:
>>> from dlestxetx import decode >>> decode(b'\x10\x02\x01\x10\x10\x05\x10\x03') b'\x01\x10\x05'
and read packets directly from file objects:
>>> from dlestxetx import read >>> packets = BytesIO(encode(b'\x04\x05\x06') + encode(b'\x07\x08\x09')) >>> read(packets) b'\x04\x05\x06' >>> read(packets) b'\x07\x08\x09'
Installation
Install this module from PyPI using pip:
pip install dlestxetx
Contribute
Source code: https://github.com/Lx/python-dlestxetx
Support
Issue tracker: https://github.com/Lx/python-dlestxetx/issues
License
This project is licensed under the MIT License.
1 maintainer
Metadata
1 maintainer
Release files for dlestxetx 1.0.0
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Source distribution (sdist)
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| dlestxetx-1.0.0.tar.gz | 3.6 kB | Details |
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| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| dlestxetx-1.0.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 7.9 kB
Release files / dlestxetx-1.0.0.tar.gz
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Release files / dlestxetx-1.0.0-py3-none-any.whl
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