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qnapctl

A tiny system daemon to control and react to QNAP hardware, including:

  • the panel LCD screen (toggle backlight and change displayed text)
  • the panel LCD buttons, usually for navigating the LCD display
  • the STATUS and USB LEDs
  • the USB COPY button
  • the disk ERROR LEDs

Also includes a demo program that makes use of the API exposed by the daemon.

Overview

Beware: this was developped and tested exclusively on the QNAP device I own, model TS-453 Pro. This code most likely won't work on different hardware.

TS-453 Pro features:

  • an A125 LCD panel with a 2×16 char display, backlight and two control buttons
  • a 4-disk bay, with activity and error LEDs for each of the 4 bays
  • some extra LEDs: dual-color status (green & red), USB activity and network activity (this one sadly cannot be controlled)

qnapd

qnapd is a C++ (Qt) daemon that:

  • reads from internal serial device /dev/ttyS1 to intercept LCD button presses (ENTER and SELECT)
  • writes to internal serial device /dev/ttyS1 to toggle LCD backlight and change LCD text
  • polls a raw I/O port to intercept USB COPY button presses
  • writes to a few raw I/O ports to toggle the various front panel LEDs

The daemon receives orders and broadcasts events using the system DBus. The DBus API is self-documented in the XML interface.

qnapctl

qnapctl is a C++ (Qt) program that communicates with qnapd to provide a few basic features:

  • blinks the green status LED faster or slower depending on load average
  • blinks the red status LED when there are failed systemd services
  • displays a few basic info on the LCD display eg. NIC IP addresses, using LCD buttons to navigate the various info

License

MIT, see LICENSE.