Case study

Gree-Wired-Proto: mapping the XK19 wired controller bus

Gree-Wired-Proto maps the RS-485 exchange between a Gree air-conditioner indoor unit and an XK19 wired controller. It records 1200-baud 8N1 serial settings, a 7E 7E header, source and destination bytes, body lengths, XOR checksum and observed message examples.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 7
Last commit: 2024-02-13
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: A Gree indoor unit and compatible wired controller for observing this bus.
Limits: The meaning of destination 40 remains unknown.
License: GPL-3.0 license.

Cite

BibTeX

@misc{gree-wired-proto-case,
  title = {{Gree-Wired-Proto: mapping the XK19 wired controller bus}},
  howpublished = {\url{https://github.com/maxim-smirnov/gree-wired-proto}},
  url = {https://github.com/maxim-smirnov/gree-wired-proto},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/gree-wired-proto-case/}}
}

Plain text

Gree-Wired-Proto: mapping the XK19 wired controller bus. https://github.com/maxim-smirnov/gree-wired-proto (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/gree-wired-proto-case/

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Primary sources

README.md GitHub · maxim-smirnov/gree-wired-proto · Revision 14168a2