autosar-e2e

The documentation is available here.

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Table of Contents

• Description
• Installation
• Usage
• Test
• Build
• License

Description

This library provides fast C implementations of the E2E CRC algorithms and E2E profiles.

Currently, all relevant CRC algorithms are available in module e2e.crc but only E2E profiles 1, 2 and 5 are available. If you provide example data for the other profiles I would try to implement them, too.

Installation

pip install autosar-e2e

Usage

CRC example

import e2e
crc: int = e2e.crc.calculate_crc8_h2f(b"\x00\x00\x00\x00")

E2E Profile 2

import e2e
# create data
data = bytearray(b"\x00" *  8)
length = len(data) - 1
data_id_list = b"\x00" * 16
# increment counter and calculate CRC inplace
e2e.p02.e2e_p02_protect(data, length, data_id_list, increment_counter=True)
# check CRC
crc_correct: bool = e2e.p02.e2e_p02_check(data, length, data_id_list)

Test

pip install pipx
pipx run tox

Build

pip install pipx
pipx run build
pipx run twine check dist/*

License

autosar-e2e is distributed under the terms of the MIT license.