37 lines
970 B
Bash
37 lines
970 B
Bash
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#!/bin/sh
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# Identify the touchscreen and print the stable by-id path for config.env.
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set -eu
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echo "=== input devices reporting a touch-ish name ==="
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found=
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for ev in /dev/input/event*; do
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name=$(cat "/sys/class/input/$(basename "$ev")/device/name" 2>/dev/null || true)
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case "$name" in
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*[Tt]ouch* | *TOUCH*)
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found=yes
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echo
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echo " device: $ev"
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echo " name: $name"
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for l in /dev/input/by-id/* /dev/input/by-path/*; do
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[ -e "$l" ] || continue
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if [ "$(readlink -f "$l")" = "$(readlink -f "$ev")" ]; then
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echo " stable: $l"
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fi
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done
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;;
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esac
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done
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if [ -z "$found" ]; then
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echo " (none matched by name)"
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echo
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echo "Fall back to listing everything:"
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for ev in /dev/input/event*; do
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printf ' %-22s %s\n' "$ev" "$(cat "/sys/class/input/$(basename "$ev")/device/name" 2>/dev/null)"
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done
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fi
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echo
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echo "Put the 'stable:' path (prefer /dev/input/by-id/) into TOUCH_DEV."
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echo "Event numbers change across reboots; by-id symlinks do not."
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