#hid #devices #daemon #hid-io #keyboard #advanced #client

nightly bin+lib hid-io-core

HID-IO is a host-side daemon for advanced HID devices

5 releases

0.1.4 Sep 7, 2023
0.1.3 Jun 5, 2023
0.1.2 Nov 29, 2022
0.1.1 Nov 17, 2022
0.1.0 May 22, 2022

#1691 in Hardware support

27 downloads per month
Used in hid-io-client


11K SLoC


Linux Status macOS Status Windows Status Doc Status Total alerts Language grade: Python

docs.rs Crates.io Crates.io Crates.io

HID-IO Client Side Library and Daemon



API Documentation


Currently you have to build the HID-IO daemon yourself. But it will be made available in binary form once we are ready for a public beta.


hid-io --help

RPC Terminal Example

First start hid-io-core in one terminal:

RUST_BACKTRACE=full RUST_LOG="info,tokio=info,tokio_core::reactor=info" cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.12s
     Running `target/debug/hid-io-core`
INFO [hid_io_core] -------------------------- HID-IO Core starting! --------------------------
INFO [hid_io_core] Log location -> "/tmp"
Press Ctrl-C to exit...
INFO [hid_io_core] Version: 0.1.0-beta3 (git v0.1.0-beta3-9-g29548e1) - debug
INFO [hid_io_core] Build: rustc 1.44.0-nightly (f509b26a7 2020-03-18) (x86_64-unknown-linux-gnu) -> x86_64-unknown-linux-gnu (Sun, 29 Mar 2020 21:40:53 GMT)
INFO [hid_io_core] Initializing HID-IO daemon...
INFO [hid_io_core::module] Initializing modules...
INFO [hid_io_core::device] Initializing devices...
INFO [hid_io_core::device::hidusb] Initializing device/hidusb...
INFO [hid_io_core::device::debug] Initializing device/debug...
INFO [hid_io_core::api] Initializing api...
INFO [hid_io_core::device::hidusb] Spawning hidusb spawning thread...
INFO [hid_io_core::device::debug] Spawning device/debug spawning thread...
INFO [hid_io_core::module] Current layout: us
API: Listening on [::1]:7185
INFO [hid_io_core::device::hidusb] Connecting to id:1 Device: "/dev/hidraw12"
    [308f:0013-ff1c:1100] I:4 Input Club Keyboard - Kira PixelMap USB (5337310036384B323430313035353031 - sam4s8) R:1222
Connected to id:1 USB [308f:0013-ff1c:1100] [Input Club] Keyboard - Kira PixelMap USB 5337310036384B323430313035353031 - sam4s8
INFO [hid_io_core::device] Registering device: 1
INFO [hid_io_core::api] Node list update detected, pushing list to subscribers -> 0

Then in another terminal window, start the RPC example program. This will connect you to the device serial port. Once it's connected, you may begin typing commands.

cargo run --example rpc
    Finished dev [unoptimized + debuginfo] target(s) in 0.12s
     Running `target/debug/examples/rpc`
Connecting to [::1]:7185
Version:    0.1.0-beta3 (git v0.1.0-beta3-9-g29548e1)
Buildtime:  Sun, 29 Mar 2020 21:40:53 GMT
Serverarch: x86_64-unknown-linux-gnu
Compiler:   rustc 1.44.0-nightly (f509b26a7 2020-03-18)
Key Path:   /tmp/.tmpGET4P5
Key:        otrbfPWsyZKa6VrWFTXHL
Id:         2
Registering to UsbKeyboard: [308f:0013-ff1c:1100] [Input Club] Keyboard - Kira PixelMap USB (5337310036384B323430313035353031 - sam4s8)



: version
 Revision:      e1a1d816199bf54f42432f6d9097171a1614b6a0
 Revision #:    1222
 Version:       v0.5.7 (+0:1222)
 Branch:        HEAD
 Tree Status:   Clean
 Repo Origin:   https://github.com/kiibohd/controller.git
 Commit Date:   2020-03-20 20:19:26 -0700
 Commit Author: Jacob Alexander <haata@kiibohd.com>
 Build Date:    2020-03-23 22:49:38 +0000
 Build OS:      Ubuntu 18.04.1 LTS bionic
 Compiler:      /usr/lib/ccache/arm-none-eabi-gcc 6.3.1
 Architecture:  arm
 Chip Compiled: sam4s8 (sam4s8b)
 CPU:           cortex-m4
 Device:        Keyboard
 Modules:       Scan(Kira) Macro(PixelMap) Output(USB) Debug(full)

 CPU Detected:  SAM4S8C (Rev B)
 CPU Id:        0x410FC241
 Chip Id:       0x28AC0AE1
 Chip Ext:      0x0
 Unique Id:     5337310036384B323430313035353031


  • Rust nightly (may relax over time)
  • capnproto >= 0.7.0

i686-pc-windows-gnu Dependencies

  • make must be path


cargo build


RUST_LOG=hid_io=info RUST_BACKTRACE=1 cargo run

Inspecting rawhid traffic:

sudo usbhid-dump -m 308f:0013 -es
sudo usbhid-dump -m 1c11:b04d -es -t 0 -i 5

Running Unit Tests

cargo test

Supported Keyboard Firmware


  • Please run cargo test before submitting a pull-request
  • Travis will fail any commits that do not pass all tests


echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
rust-gdb target/debug/hid-io -p $(pidof hid-io)


cargo build --release --target "x86_64-pc-windows-gnu"

Linux systemd service

cp hid-io.service /etc/systemd/system
systemctl daemon-reload
systemctl enable --now hid-io

Windows service

sc start hid-io
sc stop hid-io
sc query hid-io

OSX service

cp hidio.plist ~/Library/LaunchAgents
launchctl -w  ~/Library/LaunchAgents/hidio.plist


~407K SLoC