DART-6UL Wireless LAN

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DART-6UL - Wireless LAN

1 Test

Scan for wireless networks:

$ ifconfig wlan0 up
$ iw dev wlan0 scan | grep SSID

Connecting to a WPA encrypted network:
Find your network from the above scan command.

$ mv /etc/wpa_supplicant.conf /etc/wpa_supplicant.conf.org
$ wpa_passphrase <YourAP> <YourPassword> >/etc/wpa_supplicant.conf
$ wpa_supplicant -B -Dnl80211 -iwlan0 -c/etc/wpa_supplicant.conf

wait for:

wl_bss_connect_done succeeded with 88:5a:92:1d:7c:20

Check link:

$ iw dev wlan0 link

Disable eth0:

$ ifconfig eth0 down
$ ifconfig eth1 down


$ udhcpc -iwlan0
$ ifconfig

Check link speed On server:

$ iperf -s

On target:

$ iperf -c

Useful link for common iw commands: https://wiki.archlinux.org/index.php/Wireless_network_configuration#Manual_setup

2 Access Point

This example will demonstrate you how to use the DART-6UL as an access point. It will forward packets from wlan0 to eth0. DHCPD:

$ vi /etc/udhcpd.conf 
# Sample udhcpd configuration file (/etc/udhcpd.conf)
# The start and end of the IP lease block
start     #default:
end       #default:
# The interface that udhcpd will use
interface   wlan0               #default: eth0
opt     dns # public google dns servers
option  subnet
opt     router
option  lease   864000          # 10 days of seconds

This is a network example. You need to set the IP address based on your network.
First ensure that wpa_supplicant is not holding the device

$ killall wpa_supplicant
$ killall hostapd

Reinstall the driver is AP mode.

$ KVER=$(uname -a | awk '{ printf $3 }')
$ DHD=/lib/modules/$KVER/kernel/drivers/net/wireless/bcmdhd/bcmdhd.ko
$ FW=/lib/firmware/bcm/fw_bcmdhd_apsta.bin
$ NVRAM=/lib/firmware/bcm/bcmdhd.cal
$ ifconfig wlan0 down
$ rmmod bcmdhd
$ insmod $DHD firmware_path=$FW nvram_path=$NVRAM dhd_msg_level=0x0
$ ifconfig wlan0 up

IP Forwarding:

$ echo 1 > /proc/sys/net/ipv4/ip_forward
$ ifconfig wlan0
$ hostapd -B /etc/hostapd.conf -P /var/run/hostapd.pid
$ udhcpd /etc/udhcpd.conf
$ iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Use wl command to set the AP:

$ wl -i wlan0 bss down
$ wl -i wlan0 bss -C 1 up
$ wl -i wlan0 wsec 4
$ wl -i wlan0 wpa_auth 128
$ wl -i wlan0 set_pmk 12345678
$ wl -i wlan0 ssid vs-imx
wl command is installed automaticly on eMMC device. On NAND device you need to copy it from the SDCARD.

As a next step one should take a look at /etc/hostapd.conf. You may want to configure password access point name etc.