A quick script to control lkbm firmware on the Ploopy Nano.
See this post for more features and more explanation.
Last active
March 23, 2024 01:29
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Ploopy Nano control by LED-Key BitMask shell script
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| #!/bin/sh | |
| set -e | |
| usage() { | |
| cat <<ENDUSAGE | |
| $0: Send commands to Ploopy Trackball Nano that is running LKBM firmware via caps/scroll/num lock LED signals | |
| Usage: $0 [scroll|dpi|reset|status|help] | |
| See <https://github.com/qmk/qmk_firmware/tree/master/keyboards/ploopyco/trackball_nano/keymaps/lkbm>. | |
| ENDUSAGE | |
| } | |
| # Find the /sys/class/leds/* path for caps/num/scroll-lock | |
| inputdev=/dev/input/by-id/usb-PloopyCo_Trackball_Nano-event-kbd | |
| evntname="$(basename "$(readlink -f $inputdev)")" | |
| # e.g. "event22" | |
| sysclassdev=/sys/class/input/$evntname/device | |
| sysinputname="$(echo $sysclassdev/*::capslock | sed 's|.*/\(input[0-9]*\).*|\1|')" | |
| # e.g. "input1251" | |
| caps=/sys/class/leds/$sysinputname::capslock/brightness | |
| scroll=/sys/class/leds/$sysinputname::scrolllock/brightness | |
| num=/sys/class/leds/$sysinputname::numlock/brightness | |
| # We have to wait a very small amount of time or the LED changes don't seem to register | |
| # I use busybox sleep but should also work with GNU sleep (untested) | |
| lkbmwait() { | |
| busybox sleep 0.0025s | |
| } | |
| # Toggle scroll behavior, between using the trackball as normal and using it as a 2D scroll ball | |
| toggle_scroll() { | |
| echo 1 > "$num" | |
| lkbmwait | |
| echo 0 > "$num" | |
| lkbmwait | |
| } | |
| # Cycle between slow/med/fast DPI | |
| cycle_dpi() { | |
| echo 1 > "$caps" | |
| lkbmwait | |
| echo 0 > "$caps" | |
| lkbmwait | |
| } | |
| # Enter reset mode to flash new firmware | |
| enter_reset() { | |
| echo 1 > "$caps" | |
| lkbmwait | |
| echo 1 > "$num" | |
| lkbmwait | |
| echo 0 > "$num" | |
| lkbmwait | |
| echo 0 > "$caps" | |
| lkbmwait | |
| } | |
| # Read the current status of all the LEDs | |
| read_status() { | |
| c="$(cat "$caps")" | |
| s="$(cat "$scroll")" | |
| n="$(cat "$num")" | |
| echo "Input device path: $inputdev" | |
| echo "Event device name: $evntname" | |
| echo "/sys/class even device: $sysclassdev" | |
| echo "/sys/class input device: $sysinputname" | |
| echo "Capslock: $c" | |
| echo "Scroll lock: $s" | |
| echo "Numlock: $n" | |
| } | |
| case "$1" in | |
| scroll) toggle_scroll;; | |
| dpi) cycle_dpi;; | |
| reset) enter_reset;; | |
| status) read_status;; | |
| *) usage;; | |
| esac |
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