# smogcheck

**Repository Path**: mirrors_chromium_googlesource/smogcheck

## Basic Information

- **Project Name**: smogcheck
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: BSD-3-Clause
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-03-19
- **Last Updated**: 2025-08-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

C library to communicate with I2C bus directly.

Notes:
[1] The goal of this module is to enable direct I/O operations on I2C bus
    with minimal overhead. Although i2c-tools has been made available in
    Chromium OS, it still carries much overhead (as revealed by strace).

[2] The original source code was posted to Linux Kernel Documentation
    (http://www.mjmwired.net/kernel/Documentation/i2c/dev-interface) and
    has been modified and adopted here. According to this source, there are
    two versions of i2c-dev.h, one distributed with the Linux kernel and the
    other with i2c-tools. This module depends on the kernel version.

[3] The included Makefile creates a C shared library object (.so file), which
    can then be imported into Python via ctypes for developing new Autotest
    test cases for I2C devices.

Source for i2c-tools: http://www.lm-sensors.org/wiki/I2CTools