90 lines
2.1 KiB
Bash
90 lines
2.1 KiB
Bash
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#!/bin/bash
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max=$(cat /sys/class/backlight/intel_backlight/max_brightness)
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sensitivity=$((max/90))
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treshold=$((max/4))
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panOut=$((sensitivity/4))
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min=$((max/10))
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delay=2
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minSensor=404334
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while [ 1 ]
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do
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updated=1
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while [ $updated -gt 0 ]
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do
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updated=0
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backlight=$(cat /sys/class/backlight/intel_backlight/brightness)
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sensor=$(cat /sys/bus/iio/devices/iio:device0/in_illuminance_raw)
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# Scale the sensor a bit
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sensor=$((sensor/10))
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sensor=$((5*sensor))
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target=$backlight
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echo Current backlight: $backlight
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echo Max backlight: $max
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echo Sensitivity is: $sensitivity
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echo Threshold is: $treshold
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echo panOut is: $panOut
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echo min is: $min
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echo Current sensor reading: $sensor
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echo Target is: $backlight
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if [ $sensor -lt $treshold ]
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then
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echo Sensor was less than backlight
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sensor=$(((sensor+panOut)+min))
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echo New sensor: $sensor
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fi
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if [ $sensor -gt $((backlight+sensitivity)) ]
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then
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echo Sensor was greater than backlight+sensitivity
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updated=1
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target=$((target+(sensitivity/2)))
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echo New target: $target
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fi
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if [ $sensor -lt $((backlight-sensitivity)) ]
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then
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echo Sensor was less than backlight-sensitivity
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updated=1
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target=$((target-(sensitivity/2)))
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echo New target: $target
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fi
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if [ $target -gt $max ]
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then
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echo Target was greater than max brightness
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target=$max
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echo New target: $target
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fi
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if [ $target -lt 1 ]
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then
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echo Target was less than 1
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target=$min
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echo New target: $target
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fi
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if [ $updated -gt 0 ]
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then
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echo $target > /sys/class/backlight/intel_backlight/brightness
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fi
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done
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echo Sleeping
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sleep $delay
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done
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