Using WiLink 8 software on BeagleBone Green Wireless

[Gi Soo Kim]

Hi!

I installed TI SDK + WiLink 8 Software on BBGW using attached PDF file instruction.

I had few question about so far I did on BBGWs

I had major issue with packet forwarding between interfaces

First, I would like to explain how did I set up the network

I would like to extend AP(Phantom_ 6132f6) which is came from DJI drone network

The current DJI drone network is

Drone(Camera hidden SSID : FC200_0176db) <-> Range extender(AP : Phantom_6132f6) <-> User Phone(DJI APP)

What am I going to do is

Drone(Camera hidden SSID : FC200_0176db) <-> Range extender(AP : Phantom_6132f6) <-> [wlan0(STA)-BBGW(1)-mesh0(MESH)] 

[mesh0(MESH)-BBGW(2)-wlan0(AP : Phantom_GS)]<-> User Phone(DJI APP).

Here is what I did so far

BBGW(1) status

run the script

/usr/share/wl18xx/sta_start.sh

#!/bin/sh

if ps -w | grep -v grep | grep wpa_supplicant | grep wlan0 > /dev/null

then

    echo "wpa_supplicant is already running"

    exit 0

fi

if [ ! -f /usr/share/wl18xx/wpa_supplicant.conf ]

then

 if [ ! -f /etc/wpa_supplicant.conf ]

 then

  echo "error - no default wpa_supplicant.conf"

  exit 1

 fi

 cp /etc/wpa_supplicant.conf /usr/share/wl18xx/wpa_supplicant.conf

fi

wpa_supplicant  -e/usr/share/wl18xx/entropy.bin \

        -iwlan0 -Dnl80211 -c/usr/share/wl18xx/wpa_supplicant.conf &

/usr/share/wl18xx/sta-connect_ex.sh Phantom_6132f6

#!/bin/sh

NETID=0

WPA_CLI='wpa_cli -i wlan0'

if [ $# -eq 0 ] || [ "$1" == "--help" ] || [ "$1" == "-h" ]; then

    echo ""

    echo "You must specify at least the network ssid"

    echo "format: $0 <ssid> [key_mgmt] [psk]"

    echo ""

    echo "supported key-mgmt: NONE, WPA-PSK"

    exit

fi

NETID=`$WPA_CLI add_network | grep -v Using | grep -v Selected`

echo "netid="$NETID

echo "========================="

echo $WPA_CLI set_network $NETID ssid \'\""$1"\"\' > /usr/share/wl18xx/temp.txt

if [ $# -gt 1 ]; then

    if [ "$2" == "WPA-PSK" ] || [ "$2" == "NONE" ] ; then

       echo $WPA_CLI set_network $NETID key_mgmt "$2" >> /usr/share/wl18xx/temp.

    else

       echo "Sorry, but only WPA-PSK and NONE key_mgmt is supported"

       exit

    fi

else

    echo $WPA_CLI set_network $NETID key_mgmt NONE >> /usr/share/wl18xx/temp.txt

fi

if [ $# -gt 2 ]; then

    echo $WPA_CLI set_network $NETID psk \'\""$3"\"\' >> /usr/share/wl18xx/temp.

fi

echo $WPA_CLI select_network $NETID >> /usr/share/wl18xx/temp.txt

chmod 777 /usr/share/wl18xx/temp.txt

sh /usr/share/wl18xx/temp.txt

rm /usr/share/wl18xx/temp.txt

#udhcpc -i wlan0

./udhcpc -i wlan0

./mesh_start.sh

MESH=mesh0

### add Mesh interface, if not present

if [ ! -d /sys/class/net/$MESH ]

then

  echo "adding $MESH interface"

  iw phy `ls /sys/class/ieee80211/` interface add $MESH type mp

fi

if ps -w | grep -v grep | grep wpa_supplicant | grep mesh0 > /dev/null

then

    echo "wpa_supplicant is already running(Mesh)"

    exit 0

fi

wpa_supplicant -e/usr/share/wl18xx/entropy.bin \

        -imesh0 -Dnl80211 -c mesh_supplicant.conf &

sleep 1

iw phy phy0 set rts 0

ifconfig mesh0 192.168.2.2 netmask 255.255.255.0

Result

ifconfig

route

iptables

 

BBGW(2) status

run the script

/usr/share/wl18xx/ap_start.sh

#!/bin/sh

########## variables ##########

WLAN=wlan0

WLAN2=wlan2

HOSTAPD_PROC=/var/run/hostapd

HOSTAPD_CONF=/usr/share/wl18xx/hostapd.conf

HOSTAPD_BIN_DIR=/usr/sbin

IP_ADDR=192.168.1.100

IP_ADDR2=192.168.53.1

DHCP_CONF=udhcpd.conf

DHCP_CONF2=udhcpd2.conf

DHCP_CONF_PROC=u[d]hcpd.conf

DHCP_CONF_PROC2=u[d]hcpd2.conf

########## body ##########

### check for configuration file

if [ ! -f $HOSTAPD_CONF ]; then

 if [ ! -f /etc/hostapd.conf ]

 then

  echo "error - no default hostapd.conf file"

  exit 1

 fi

 cp /etc/hostapd.conf $HOSTAPD_CONF

 chmod 777 $HOSTAPD_CONF

fi

### configure ip forewarding

echo 1 > /proc/sys/net/ipv4/ip_forward

### add WLAN interface, if not present

if [ ! -d /sys/class/net/$WLAN ]

then

  echo "adding $WLAN interface"

  iw phy `ls /sys/class/ieee80211/` interface add $WLAN type managed

fi

### start a hostapd interface, if not present

if [ ! -r $HOSTAPD_PROC ]

then

 $HOSTAPD_BIN_DIR/hostapd $HOSTAPD_CONF &

 sleep 1

fi

### configure ip

ifconfig $WLAN $IP_ADDR netmask 255.255.255.0 up

if [ -d /sys/class/net/$WLAN2 ]

then

  ifconfig $WLAN2 $IP_ADDR2 netmask 255.255.255.0 up

fi

### start udhcpd server, if not started

output=`ps | grep /usr/share/wl18xx\$DHCP_CONF_PROC`

set -- $output

echo $output

if [ -z "$output" ]; then

  udhcpd $DHCP_CONF

fi

if [ -d /sys/class/net/$WLAN2 ]

then

  output=`ps | grep /usr/share/wl18xx\$DHCP_CONF_PROC2`

  set -- $output

  echo $output

  if [ -z "$output" ]; then

    udhcpd $DHCP_CONF2

  fi

fi

### configure nat

#iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

./mesh_start.sh

MESH=mesh0

### add Mesh interface, if not present

if [ ! -d /sys/class/net/$MESH ]

then

  echo "adding $MESH interface"

  iw phy `ls /sys/class/ieee80211/` interface add $MESH type mp

fi

if ps -w | grep -v grep | grep wpa_supplicant | grep mesh0 > /dev/null

then

    echo "wpa_supplicant is already running(Mesh)"

    exit 0

fi

wpa_supplicant -e/usr/share/wl18xx/entropy.bin \

        -imesh0 -Dnl80211 -c mesh_supplicant.conf &

sleep 1

iw phy phy0 set rts 0

ifconfig mesh0 192.168.2.1 netmask 255.255.255.0

Result

ifconfig

route

iptables

For the /etc/sysctl.conf on both BBGW

So When I connect to User Phone on BBGW(2) AP : Phantom_GS. It does not show the live stream data

 

Could you help with building network? I can not figure out what is the problem and where should I fix it

It seems like I have to dealing with IP forwarding and configure firewall(iptables?)

Only thing I can verified that mesh network is working nothing else

Thank you