autosar-e2e

• autosar-e2e
• Library API
  • E2E Profiles
    • Profile 01
    • Profile 02
    • Profile 05
  • CRC Functions
    • 8-bit SAE J1850 CRC Calculation
    • 8-bit 0x2F polynomial CRC Calculation
    • 16-bit CCITT-FALSE CRC16
    • 16-bit 0x8005 polynomial CRC calculation
    • 32-bit Ethernet CRC Calculation
    • 32-bit 0xF4ACFB13 polynomial CRC calculation
    • 64-bit 0x42F0E1EBA9EA3693 polynomial CRC calculation

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 profile 2 is available. If you provide example data for other profiles i would try to implement them, too.

Installation

You can install autosar-e2e from PyPI:

python -m pip install autosar-e2e

Usage

CRC example

import e2e

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

E2E P02 example

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

Run the tests with:

pip install pipx
pipx run tox

Build

Build autosar-e2e with:

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

License

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