#!/bin/bash

# Keep node reset.

UNEXPORT=0
if [ ! -d /sys/class/gpio/gpio21 ]; then
  echo 21 > /sys/class/gpio/export || exit 1
  echo 'out' > /sys/class/gpio/gpio21/direction || exit 2
  UNEXPORT=1
fi

echo 0 > /sys/class/gpio/gpio21/value

echo "Node shutdown completed."

if [ $UNEXPORT -eq 1 ]; then
  echo 21 > /sys/class/gpio/unexport
fi

exit 0
