probook 4530s fan control

#!/bin/bash
currentDir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
ecFile=$currentDir/probook_ec.pl
autoSpeed=false
currentTemp=0

init() {
	$ecFile := 0x2F 0x80
	echo "ProbookFan: Init fan to 0x80"
}

getTemp() {
 	currentTemp=$(sensors | grep "Core 0" | cut -b 18-19)
}

setSpeed() {
	if [ $currentTemp -le 52 ] && [ $autoSpeed = true ] ; then
		$ecFile := 0x2F 0x80
		autoSpeed=false
	elif [ $currentTemp -gt 52 ] && [ $autoSpeed = false ] ; then
		$ecFile := 0x2F 0xFF
		autoSpeed=true
	fi
}

init

while true; do
	getTemp
	setSpeed
	sleep 3
done