sv1afnfilter.sh

#!/bin/sh

#COMMAND A BANDPATH FILTER FROM SV1AFN

Init()
{
#GPIO Declaration
if [ ! -d /sys/class/gpio/gpio26 ]; then
echo "Create GPIOs"

echo GPIO declaration
echo 26 > /sys/class/gpio/export
echo 19 > /sys/class/gpio/export
echo 13 > /sys/class/gpio/export
echo 6  > /sys/class/gpio/export
echo 21  > /sys/class/gpio/export


#GPIO out
echo GPIO Mode OUT
echo out > /sys/class/gpio/gpio26/direction
echo out > /sys/class/gpio/gpio19/direction
echo out > /sys/class/gpio/gpio13/direction
echo out > /sys/class/gpio/gpio6/direction
echo out > /sys/class/gpio/gpio21/direction

fi
}

#Initialization : All at zero (disable filter)
reset_all()
{
	#GPIO out
echo GPIO Mode OUT
echo out > /sys/class/gpio/gpio26/direction
echo out > /sys/class/gpio/gpio19/direction
echo out > /sys/class/gpio/gpio13/direction
echo out > /sys/class/gpio/gpio6/direction
echo out > /sys/class/gpio/gpio21/direction
	echo 0 > /sys/class/gpio/gpio26/value
	echo 0 > /sys/class/gpio/gpio19/value
	echo 0 > /sys/class/gpio/gpio13/value
	echo 0 > /sys/class/gpio/gpio6/value
}

Init

case "$1" in
"10m")
    reset_all
	echo 1 > /sys/class/gpio/gpio26/value
        ;;
"15m")
    reset_all
    echo 1 > /sys/class/gpio/gpio19/value
    ;;
"20m")
    reset_all
    echo 1 > /sys/class/gpio/gpio13/value
    ;;
"40m")
    reset_all
    echo 1 > /sys/class/gpio/gpio6/value
    ;;
"ptton")
    echo out > /sys/class/gpio/gpio21/direction
    echo 1 > /sys/class/gpio/gpio21/value
    ;;
"pttoff")

    echo in > /sys/class/gpio/gpio21/direction
    ;;          

*)
     ;;
esac