co2mon
| Crates.io | co2mon |
| lib.rs | co2mon |
| version | 2.1.1 |
| source | src |
| created_at | 2019-02-01 18:58:18.934309 |
| updated_at | 2021-10-02 16:38:20.501739 |
| description | Driver for the Holtek ZyTemp CO₂ USB HID sensors |
| homepage | |
| repository | https://github.com/lnicola/co2mon |
| max_upload_size | |
| id | 112060 |
| size | 35,136 |
Laurențiu Nicola (lnicola)
documentation
README
co2mon
A driver for the Holtek CO₂ USB monitors, tested using a TFA-Dostmann AIRCO2NTROL MINI sensor.
Permissions
On Linux, you need to be able to access the USB HID device. For that, you
can save the following udev rule to /etc/udev/rules.d/60-co2mon.rules:
ACTION=="add|change", SUBSYSTEMS=="usb", ATTRS{idVendor}=="04d9", ATTRS{idProduct}=="a052", MODE:="0666"
Then reload the rules and trigger them:
udevadm control --reload
udevadm trigger
Note that the udev rule above makes the device accessible to every local user.
Quick start
cargo run --example watch
Releases
Release notes are available in CHANGELOG.md.
Protocol
The USB HID protocol is not documented, but is a superset of this one and was reverse-engineered before.
The implementation was inspired by this one.
License
This project is licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.