#!/bin/sh

if [ "$1" = "start" ]
then
	. /etc/profile
	if [ ! -e /boot/alpha ]
	then
		devmem 0x030010AC 0x04 # PINMUX PWM10
		blpwm="/sys/class/pwm/pwmchip8/pwm2/"
		if [ ! -e "${blpwm}" ]
		then
			echo 2 > /sys/class/pwm/pwmchip8/export
		fi
		echo 0 > $blpwm/enable
		echo "10000" > ${blpwm}/period # 100KHZ
		if [ -e /boot/uEnv.txt ]
		then
			hd22800=$(cat /boot/uEnv.txt | grep hd228001c31 | wc -l)
			if [ "${hd22800}" -ne 0 ]
			then
				echo "2000" > ${blpwm}/duty_cycle # 20%
			else
				echo "9500" > ${blpwm}/duty_cycle
			fi
		else
			echo "9500" > ${blpwm}/duty_cycle
		fi
		echo 1 > $blpwm/enable
	fi
	exit 0
fi