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.
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 is a C++ (Qt) daemon that:
- reads from internal serial device
/dev/ttyS1to intercept LCD button presses (ENTER and SELECT) - writes to internal serial device
/dev/ttyS1to 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 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
MIT, see LICENSE.