DALI (“Digital Addressable Lighting Interface”) defines how lighting control gear (eg. fluorescent ballasts, LED dimmers) and input devices (push buttons, motion detectors, etc.) should interoperate. It is standardised in IEC 62386.

IEC 62386 contains several parts. Part 101 contains general requirements for all system components, part 102 covers general requirements for control gear, and part 103 describes general requirements for control devices. Parts 2xx extend part 102 with lamp-specific extensions and parts 3xx extend part 103 with input device specific extensions.

This library has been written with reference to the following documents:

IEC 62386-101:2014 (general requirements for system components)
IEC 62386-102:2014 (general requirements for control gear)
IEC 62386-103:2014 (general requirements for control devices)
IEC 62386-201:2009 (fluorescent lamps)
IEC 62386-202:2009 (self-contained emergency lighting)
IEC 62386-205:2009 (supply voltage controller for incandescent lamps)
IEC 62386-207:2009 (LED modules)
I do not have copies of the other parts of the standard; they are fairly expensive to obtain. The library is designed to be extensible; adding support for the other parts ought to be easy and self-contained.

The dali.memory module supports the extended memory bank specifications created and maintained by the Digital Illumination Interface Alliance:

DiiA DALI Part 251 — Memory Bank 1 Extension
DiiA DALI Part 252 — Energy Reporting
DiiA DALI Part 253 — Diagnostics & Maintenance
Python versions supported
This library currently requires Python version 3.6 or later.

Some of the code in this project is experimental and its API is subject to change. Modules with stable APIs are noted below.

Library structure
address - Device addressing; stable for gear, not stable for devices
command - Command registry, interface to command decoding; stable
device - DALI control devices as defined in IEC 62386; not stable
general - Commands and events from part 103
driver - Objects to communicate with physical DALI gateways or services; not stable
base - General driver contracts
hasseb - Driver for Hasseb DALI Master
tridonic - Driver for Tridonic DALI USB
daliserver - Driver for (needs to be adopted to dali.driver.base API)
hid - asyncio-based drivers for Tridonic DALI USB and hasseb DALI Master
exceptions - DALI related exceptions
frame - Forward and backward frames; stable
gear - DALI control gear as defined in IEC 62386; stable
emergency - Commands from part 202
general - Commands from part 102
incandescent - Commands from part 205
led - Commands from part 207
memory - access to memory banks; not stable
sequences - packaged sequences of commands; stable
Stephen Early (Author)
Robert Niederreiter
Diogo Gomes
Martijn Hemeryck
Hans Baumgartner
Ferdinand Keil
python-dali is Copyright (C) 2013–2022 Stephen Early <> and other contributors.

It is distributed under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU Lesser General Public License and GNU General Public License along with this program. If not, see this link.