dune-weaver/dune-weaver-touch/scripts/touch-monitor

# /usr/local/bin/screen-off
#!/usr/bin/env bash
set -e
BL="/sys/class/backlight/$(ls /sys/class/backlight | head -n1)"
if [ -e "$BL/bl_power" ]; then echo 4 | sudo tee "$BL/bl_power"; else echo 0 | sudo tee "$BL/brightness"; fi
echo 1 | sudo tee /sys/class/graphics/fb0/blank >/dev/null
tuannguyen@dune-weaver-test:~ $ cat /usr/local/bin/touch-monitor
#!/usr/bin/env bash
# Monitor touch events and wake screen when detected

# Find touch input device
TOUCH_DEV=""
for dev in /dev/input/event*; do
    if udevadm info --query=all --name=$dev 2>/dev/null | grep -q -i "touch\|ft5406"; then
        TOUCH_DEV=$dev
        break
    fi
done

if [ -z "$TOUCH_DEV" ]; then
    # Fallback to first event device
    TOUCH_DEV="/dev/input/event0"
fi

echo "Monitoring touch device: $TOUCH_DEV"

# Monitor for any input
while true; do
    # Use timeout to read one event (16 bytes)
    if timeout 0.1 cat "$TOUCH_DEV" 2>/dev/null | head -c 16 > /dev/null; then
        echo "Touch detected - waking screen"
        /usr/local/bin/screen-on
        # Exit so the main app can take over
        exit 0
    fi
    sleep 0.1
done