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HID tools

Project description

hid-tools is a set of tools to interact with the kernel’s HID subsystem.

It can be run directly from the git repository or installed via pip3 install hid-tools.

# Installation

The hid-tools repository does not need to be installed, all tools and kernel tests can be run straight from the git repository. Where the tools need to be installed, it is recommended to use pip:

` $ pip3 install --user . `

This installs all tools into the user-specifc Python paths. Skip the –user flag where it needs to be installed system-wide. Removal of the tools works with pip as well:

` $ pip3 uninstall hid-tools `

# Debugging tools for users

## hid-recorder

hid-recorder prints the HID Report Descriptor from a /dev/hidraw device node and any HID reports coming from that device. The output format can be used with hid-replay for debugging. When run without any arguments, the tool prints a list of available devices.

` $ sudo hid-recorder `

## hid-replay

hid-replay takes the output from hid-recorder and replays it through a virtual HID device that looks exactly like the one recorded.

` $ sudo hid-replay recording-file.hid `

## hid-decode

hid-decode takes a HID Report Descriptor and prints a human-readable version of it. hid-decode takes binary report descriptors, strings of bytes, and other formats.

` $ hid-decode /sys/class/input/event5/device/device/report_descriptor `

# kernel tests

The hid-tools repository contains a number of tests exercising the kernel HID subsystem. The tests are not part of the pip3 module and must be run from the git repository. The most convenient invocation of the tests is by simply calling pytest.

` $ sudo pytest-3 `

See the pytest documentation for information on how to run a subset of tests.

# hidtools python module

Technical limitations require that hid-tools ships with a Python module called hidtools. This module is not to be used by external applications.

The hidtools python module does not provide any API stability guarantee. It may change at any time

# License

hid-tools is licensed under the GPLv2+.

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