Merge pull request #4 from Theluga/branch-to-pull-request-main-fork

Adding new script and service example

AutomaticBrightness.service

@@ -0,0 +1,8 @@
+[Unit]
+Description=Mac like automatic brightness service
+
+[Service]
+ExecStart=/path/to/AutomaticBrightness.sh
+
+[Install]
+WantedBy=default.target

README.md

@@ -17,7 +17,7 @@ Your sensor has a diffrent range thant the 12th Gen Intel Framework laptop senso
            Type     |  Sensor Rnge | STDScale
      11th Gen Intel | 0 - 3207633  | 1
      12th Gen Intel | 0 - 3984     | 24
-     Dell Insp 7359 | 0 - 15000    | ? 
+     Dell Insp 7359 | 0 - 15000    | 20 
 
 ## Controls
 ```./AutomaticBrightness.sh | Defualt running mode of script```

autobrightness.sh

@@ -0,0 +1,169 @@
+#!/bin/bash
+# Slight Alteration of AutomaticBrighness.sh (could be a dell specific fork)
+
+#variables to run
+
+#decrease cpu usage
+Priority=19 # CPU limit, adjust as needed
+
+# How much light change must be seen by the sensor before it will act
+LightChange=10
+
+# How often it checks the sensor
+SensorDelay=1
+
+# Scale sensor to display brightness range
+SensorToDisplayScale=20
+
+# This should match your refresh rate otherwise it will either change the backlight more times than needed or too few for a smooth animation
+LevelSteps=60
+
+# The is should match the LevelSteps but in the actual time each event should take to see
+AnimationDelay=0.016
+
+# Read the variable names
+MaxScreenBrightness=937
+MinimumBrightness=1
+
+#minimum illuminance to get minimum brightness
+
+MinimimumIlluminance=0
+
+# 2 : Default | 1 : Add Offset | 0 : Subtract Offset, Recommended not to change
+op=2
+
+#place where you get the brightness of the monitor being controled and the sensor of brightness
+MonitorBrightness=/sys/class/backlight/intel_backlight/brightness
+
+#my sensor keep changing places, this way it will always be found with * if you have lots of sensors
+
+AnbientSensorIlluminance=`echo "$(set -- $(realpath /sys/bus/iio/devices/iio:*/in_illuminance_raw); echo "$1")"`
+
+
+while getopts i:d: flag; do
+  case "${flag}" in
+    i) op=1
+       num=${OPTARG};;
+    d) op=0 
+       num=${OPTARG};;
+  esac
+done
+
+if [[ -f /tmp/AB.offset ]]; then
+  OffSet=$(cat /tmp/AB.offset)
+else
+  OffSet=0
+  echo $OffSet > /tmp/AB.offset
+  chmod 666 /tmp/AB.offset
+fi
+
+OffSet=$((OffSet < 0 ? 0 : OffSet))
+
+if [[ $op -lt 2 ]]; then
+  if [[ $op -eq 1 ]]; then
+    OffSet=$((OffSet + num))
+  else 
+    OffSet=$((OffSet - num))
+  fi
+
+  OffSet=$((OffSet < 0 ? 0 : OffSet))
+  echo $OffSet > /tmp/AB.offset
+  chmod 666 /tmp/AB.offset
+  exit
+fi
+
+
+# Set the priority of the current script and says it is running
+renice "$Priority" "$$"
+touch '/tmp/AB.running'
+
+
+OldLight=$(cat $AnbientSensorIlluminance)
+
+until [ -f /tmp/AB.kill ]; do
+  if [[ -f /tmp/AB.stop ]]; then
+    rm '/tmp/AB.stop'
+    rm '/tmp/AB.running'
+
+    until [[ -f /tmp/AB.start ]]; do
+      sleep 10
+    done
+
+    rm '/tmp/AB.start'
+    touch '/tmp/AB.running'
+  else
+    if [[ -f /tmp/AB.offset ]]; then
+      OffSet=$(cat /tmp/AB.offset)
+    else
+      OffSet=0
+      echo $OffSet > /tmp/AB.offset
+      chmod 666 /tmp/AB.offset
+    fi
+
+    Light=$(cat $AnbientSensorIlluminance)
+    RealLight=$(cat $AnbientSensorIlluminance)
+    Light=$((Light + OffSet))
+    RealLight=$((RealLight + OffSet))
+
+    if [[ $Light -lt $LightChange ]]; then
+      MaxOld=$((OldLight + LightChange))
+      MinOld=$((OldLight - LightChange))
+    else
+      MaxOld=$((OldLight + OldLight/LightChange))
+      MinOld=$((OldLight - OldLight/LightChange))
+    fi
+
+    if [[ $Light -gt $MaxOld ]] || [[ $Light -lt $MinOld ]]; then
+      CurrentBrightness=$(cat $MonitorBrightness)
+      Light=$(( $Light + $MinimumBrightness ))
+      TempLight=$(($Light * $SensorToDisplayScale))
+
+      if [[ $TempLight -gt $MaxScreenBrightness ]]; then
+        NewLight=$MaxScreenBrightness
+        LimitMaxIlluminanceReached=1
+      elif [[ $RealLight -le $MinimimumIlluminance ]]; then
+        NewLight=$MinimumBrightness
+        LimitMinIlluminanceReached=1
+      else
+        NewLight=$TempLight
+      fi
+
+      DiffCount=$(( ($NewLight - $CurrentBrightness)/$LevelSteps ))
+      
+      for i in $(eval echo {1..$LevelSteps}); do
+        NewLight=$(( $DiffCount ))
+
+        if [[ $NewLight -lt 0 ]]; then
+          NewLight=$( echo "$NewLight" | awk -F "-" {'print$2'})
+          NewLight=$(echo $NewLight-)
+        else
+          NewLight=$(echo +$NewLight)
+        fi
+        
+        if [[ $i -eq $LevelSteps ]]; then
+          brightnessctl -q s $NewLight
+          
+          if [[ $LimitMaxIlluminanceReached -eq 1 ]]; then
+            NewLight=$MaxScreenBrightness
+            LimitMaxIlluminanceReached=0
+          fi
+          
+          if [[ $LimitMinIlluminanceReached -eq 1 ]]; then
+            NewLight=$MinimumBrightness
+            LimitMinIlluminanceReached=0
+          fi
+        fi
+          
+        brightnessctl -q s $NewLight
+        sleep $AnimationDelay
+      done
+
+      OldLight=$Light
+    fi
+
+    sleep $SensorDelay
+  fi
+done
+
+rm '/tmp/AB.running'
+rm '/tmp/AB.kill'