shark-files/usr/bin/BATTERY

#!/bin/sh

OFFSET=448

GPIO40=$((40 + $OFFSET))
GPIO41=$((41 + $OFFSET))

setup() {
        echo "${1}" > /sys/class/gpio/export 2>/dev/null
        echo in > "/sys/class/gpio/gpio${1}/direction" 2>/dev/null
}

check_gpio() {
        if [ ! -d "/sys/class/gpio/gpio${1}" ]; then
          setup "${1}"
        fi
        state=$(cat "/sys/class/gpio/gpio${1}/value")
        echo "${state}"
}

gpio40=$(check_gpio $GPIO40)
gpio41=$(check_gpio $GPIO41)

if [ "${gpio40}" -eq "0" ] && [ "${gpio41}" -eq "0" ]; then
        echo "discharging"
elif [ "${gpio40}" -eq "0" ]; then
        echo "full"
elif [ "${gpio41}" -eq "0" ]; then
        echo "charging"
fi