#/bin/bash

RET=0
sleep 2

echo " " 
echo " "
echo " "
echo "######################################################################################"
echo "##########################      FAN PWM Testing Start       ##########################"

echo 0 > /sys/class/pwm/pwmchip0/export 2> /dev/null
echo 10000 > /sys/class/pwm/pwmchip0/pwm0/period 2> /dev/null
echo 5000 >  /sys/class/pwm/pwmchip0/pwm0/duty_cycle 2> /dev/null
echo normal > /sys/class/pwm/pwmchip0/pwm0/polarity 2> /dev/null
echo 1 > /sys/class/pwm/pwmchip0/pwm0/enable 2> /dev/null
sleep 1

echo "###  Turn off the FAN about 5s by PWM0 ###"
echo 10000 >  /sys/class/pwm/pwmchip0/pwm0/duty_cycle 2> /dev/null
sleep 5

echo "###  Turn on the FAN about 10s by PWM0  ###"
#echo 5000 >  /sys/class/pwm/pwmchip0/pwm0/duty_cycle 2> /dev/null
echo 0 >  /sys/class/pwm/pwmchip0/pwm0/duty_cycle 2> /dev/null
sleep 10

echo "###  Turn off the FAN completely ###"
echo 10000 >  /sys/class/pwm/pwmchip0/pwm0/duty_cycle 2> /dev/null

while true
do
	read -t20 -s -n1  -p "### Please confirm if the FAN can work fine, enter y or n. "y" is good, "n" is for bad. ###" keypress
	if [ $? -eq 0 ]; then
		if [ ${keypress} == 'y' ]; then
			echo " "
			echo " "
			echo "###  FAN can work fine, FAN feature is good  ### "
			break
  		fi

		if [ ${keypress} == 'n' ]; then
			RET=1
			echo " "
			echo " "
			echo "Error Notice: FAN can not work fine, FAN feature is bad"
			break
		fi
	fi
	
	echo " "
done

echo 0 > /sys/class/pwm/pwmchip0/unexport 2> /dev/null

echo "######################################################################################"
echo " "
echo " "
echo " "

sleep 2

exit ${RET}