#!/bin/bash
# 40 Pin Header GPIO loop test script, it based on pinctrl shell script

function loop_test()
{
   if [ $# != 3 ] ; then
      echo "ERROR: Invalid input arguments"
      return 1;
   fi 

   level=$3
   pinctrl $1 $level
   res=`pinctrl -i $2`

   printf "$1 out [$level] --> $2 in [$res] : "
   if [ $level == $res ]  ; then
      printf " [  OK  ]\n"
   else
      printf " [ FAIL ]\n"
      exit 1;
   fi
}


if [ $# != 2 ] ; then
   echo ""
   echo "Usage  : $0 Pin1 Pin2"
   echo "Example: $0 GPIO01_IO10 GPIO01_IO11" 
   echo ""
   echo "You can check pinmap by 'pinctrl -v' "
   echo ""
   exit;
fi


loop_test $1 $2 1
loop_test $1 $2 0

loop_test $2 $1 1
loop_test $2 $1 0

exit 0;