42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
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#!/bin/bash
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#
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# applesmc keyboard backlight sample test daemon
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# by Silvan Calarco <silvan.calarco@mambasoft.it>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License v2 as published by the
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# Free Software Foundation.
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#
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SENSIBILITY=25
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TIMEWAIT=2
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BLINDOFF=50
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BLINDON=100
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SENSOR_FILE=/sys/devices/platform/applesmc.768/light
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[ -e $SENSOR_FILE ] || exit 1
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while [ "1" ]; do
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eval `cat $SENSOR_FILE|sed "s|(\(.*\),\(.*\))|LIGHTL=\1 LIGHTR=\2|"` >/dev/null
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if [ "$LIGHTR" ]; then
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if [ $LIGHTL -gt $LIGHTR ]; then
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LIGHTM=$LIGHTL
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else
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LIGHTM=$LIGHTR
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fi
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# LIGHTM=`expr \( $LIGHTL + $LIGHTR \) / 2`
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BACKLIGHT=`expr 255 - $LIGHTM \* $SENSIBILITY`
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if [ $BACKLIGHT -lt $BLINDOFF ]; then
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BACKLIGHT=0
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elif [ $BACKLIGHT -lt $BLINDON ]; then
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BACKLIGHT=`expr $BACKLIGHT + 50`
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else
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[ $BACKLIGHT -gt 255 ] && BACKLIGHT=255
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fi
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echo "LightM=$LIGHTM Backlight=$BACKLIGHT "
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applesmc $BACKLIGHT
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# echo $BACKLIGHT > /sys/devices/platform/applesmc.768/keyboard_backlight
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# CURRBACKLIGHT=$BACKLIGHT
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sleep $TIMEWAIT
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fi
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done
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