#!/bin/sh
###########################################################################
#
# Copyright (c) 2021-2023 Diality Inc. - All Rights Reserved.
#
# THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
# WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
#
# @file    brightness_set.sh
#
# @author  (last)      Behrouz NematiPour
# @date    (last)      16-Dec-2021
# @author  (original)  Behrouz NematiPour
# @date    (original)  23-May-2021
#
############################################################################

if [ "$#" -eq 0 ]; then
    currentFile=$(basename "$0")
    echo "Usage: ./$currentFile '<brightness>'"
    exit 0
fi

echo "$1" | sudo tee /sys/class/backlight/lvds_backlight/brightness > /dev/null                                     # realtime
echo "$1" | sudo tee /var/lib/systemd/backlight/platform-lvds_backlight\:backlight\:lvds_backlight > /dev/null      # preserve for reboot