Hardkernel offers a few USB based WiFi modules to enable WiFi connectivity for their Single Board Computers (SBCs). Some of them can also be used to deploy these SBCs as Access Points. The various modules offered can be found at https://www.hardkernel.com/product-category/connectivity/.
Wireless Controller Information
The capability list of these modules can be obtained using the following command:
$ sudo iw list
...
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* WDS
* monitor
* mesh point
...
If there is the “AP” capability listed in the “Supported interface modes”, then that device will support the Access Point mode. Below are the details of all the modules offered by Hardkernel:
Wifi Module 0 Manufacturer: Mediatek Ralink Part name: RT5370N Type: chip Number of busses: 1 Bus(es): USB 2.0 Number of bands: 1 Band(s): 2.4GHz Data rate: 150Mbps MIMO configuration: 1x1:1 (1T1R) IEEE 802.11 PHY Modes: b,g,n Bus 005 Device 002: ID 148F:5370 Ralink Technology, RT5370 Wireless Adapter Wifi Module 3 Manufacturer: Realtek Part name: RTL8188CUS Type: chip Number of busses: 1 Bus(es): USB 2.0 Number of bands: 1 Band(s): 2.4GHz Data rate: 150Mbps MIMO configuration: 1x1:1 (1T1R) IEEE 802.11 PHY Modes: b,g,n Bus 001 Device 003: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter Wifi Module 4 Manufacturer: Ralink Part name: RT5572N Type: chip Number of busses: 1 Bus(es): USB 2.0 Number of bands: 2 Band(s): 2.4GHz, 5GHz Data rate: 300Mbps MIMO configuration: 2x2:2 (2T2R) IEEE 802.11 PHY Modes: a,b,g,n Bus 001 Device 006: ID 148f:5572 Ralink Technology, Corp. RT5572 Wireless Adapter Wifi Module 5 Manufacturer: Realtek Type: chip Number of busses: 2 Bus(es): USB 2.0 / USB 3.0 Number of bands: 2 Band(s): 2.4GHz, 5GHz Data rate: 300Mbps MIMO configuration: 2x2:2 (2T2R) IEEE 802.11 PHY Modes: a,b,g,n,ac Bus 003: ID 0bda:8812 Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter Wifi Module 5A Manufacturer: Realtek Type: chip Number of busses: 1 Bus(es): USB 2.0 Number of bands: 2 Band(s): 2.4GHz, 5GHz Data rate: AC600 MIMO configuration: 433 Mbps @ 5 GHz @ 1T1R / 150 Mbps @ 2.4 GHz @ 1T1R IEEE 802.11 PHY Modes: a,b,g,n,ac Bus 003 Device 003: ID 0bda:a811 Realtek Semiconductor Corp.
Configure Access Point
- One forum member (@tam1111574) reported there is an issue with USB 3.0 port on the XU4 at http://forum.odroid.com/viewtopic.php?f=97&t=19285
- All commands must be executed in super user mode
- You should run apt update && apt full-upgrade before proceeding
- In addition, you may need to run apt install libnl-3-dev libnl-genl-3-dev libssl-dev hostapd iptables git pkg-config vim build-essential
We will need to configure the wireless network interface and dnsmasq daemon. The access point configuration can be divided into the following tasks:
- Setup network interface configuration
- Setup DHCP server configuration
- Setup iptables to forward the internet traffic from Ethernet to wireless lan.
- Setup hostapd server or wpa_supplicant configuration.
- Check service & WIFI configuration
Setup network interface configuration.
In order to configure the Wireless Access Point, you need to provide a static IP address for the Wireless network card. Check the wlan0 part of the following contents:
# vi /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
auto wlan0
iface wlan0 inet static
address 192.168.1.1
netmask 255.255.255.0
Note that the predictable interface names shown as starts with wlan if you have an interface name.
If your wireless interface name is as shown below, add net.ifnames=0 as kernel parameter to kernel command line by editing the boot.ini:
# ifconfig
enx7cdd9052131e Link encap:Ethernet HWaddr 7c:dd:90:52:13:1e
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:321 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
The local interface name issue gets resolved to have predictable name for wireless interface.
# ifconfig
wlan0 Link encap:Ethernet HWaddr 7c:dd:90:52:13:1e
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:10 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Note: The wlan0 IP address might be different from yours. Wireless interface name can be changed as it depends on the wireless cards you installed.
Setup DHCP server configuration for Access Point
Configure dnsmasq which is a lightweight DHCP and DNS server.
# apt install dnsmasq Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 16.2 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://ports.ubuntu.com/ubuntu-ports bionic/universe armhf dnsmasq all 2.79-1 [16.2 kB] Fetched 16.2 kB in 1s (16.6 kB/s) (Reading database ... 155718 files and directories currently installed.) Preparing to unpack .../dnsmasq_2.79-1_all.deb ... Unpacking dnsmasq (2.79-1) over (2.79-1) ... Setting up dnsmasq (2.79-1) ... Processing triggers for systemd (237-3ubuntu10.9) ...If you faced “FAILED” message when starting up the dnsmasq.service like the below “port 53: Address already in use”, then perform the following:
... invoke-rc.d: initscript dnsmasq, action "start" failed... dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server Loaded: loaded (/lib/systemd/system/dnsmasq.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Mon 2018-12-10 01:59:06 UTC; 22ms ago Process: 2073 ExecStart=/etc/init.d/dnsmasq systemd-exec (code=exited, status=2) Process: 2072 ExecStartPre=/usr/sbin/dnsmasq --test (code=exited, status=0/SUCCESS) Dec 10 01:59:06 odroid systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server... Dec 10 01:59:06 odroid dnsmasq[2072]: dnsmasq: syntax check OK. Dec 10 01:59:06 odroid dnsmasq[2073]: dnsmasq: failed to create listening socket for port 53: Address already in use Dec 10 01:59:06 odroid dnsmasq[2073]: failed to create listening socket for port 53: Address already in use Dec 10 01:59:06 odroid dnsmasq[2073]: FAILED to start up Dec 10 01:59:06 odroid systemd[1]: dnsmasq.service: Control process exited, code=exited status=2 Dec 10 01:59:06 odroid systemd[1]: dnsmasq.service: Failed with result 'exit-code'. Dec 10 01:59:06 odroid systemd[1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server. Processing triggers for systemd (237-3ubuntu10.9) ...Stop the service that was listening on port 53:
# Check that systemd-resolve service is listening port 53 now(127.0.0.53:53) # netstat -alnp | grep -w LISTEN tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 755/systemd-resolve tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 916/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2616/cupsd tcp6 0 0 :::22 :::* LISTEN 916/sshd tcp6 0 0 ::1:631 :::* LISTEN 2616/cupsd # To use the 53 port, disable & stop the systemd-resolved service # systemctl disable systemd-resolved.service Removed /etc/systemd/system/multi-user.target.wants/systemd-resolved.service. Removed /etc/systemd/system/dbus-org.freedesktop.resolve1.service. # systemctl stop systemd-resolved # dnsmasq service enable & start # systemctl enable dnsmasq Synchronizing state of dnsmasq.service with SysV service script with /lib/systemd/systemd-sysv-install. Executing: /lib/systemd/systemd-sysv-install enable dnsmasq # systemctl start dnsmasq # confirm dnsmasq service running # netstat -alnp | grep -w LISTEN tcp6 0 0 ::1:631 :::* LISTEN 2616/cupsd tcp 0 0 0.0.0.0:53 0.0.0.0:* LISTEN 6100/dnsmasq tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 677/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 2734/cupsd tcp6 0 0 :::53 :::* LISTEN 6100/dnsmasq tcp6 0 0 :::22 :::* LISTEN 677/sshd tcp6 0 0 ::1:631 :::* LISTEN 2734/cupsdCopy dnsmasq configuration file to get a backup and then make a new one.
# mv /etc/dnsmasq.conf /etc/dnsmasq.conf.org # vi /etc/dnsmasq.confThe dnsmasq.conf contents are like so:
domain-needed bogus-priv no-resolv no-poll server=/example.com/192.168.1.5 server=8.8.8.8 server=8.8.4.4 local=/example.com/ address=/doubleclick.net/127.0.0.1 no-hosts #addn-hosts=/etc/dnsmasq.d/hosts.conf expand-hosts domain=example.com dhcp-range=192.168.1.20,192.168.1.50,72h dhcp-range=tftp,192.168.1.250,192.168.1.254 dhcp-option=option:router,192.168.1.1 dhcp-option=option:ntp-server,192.168.1.5 dhcp-option=19,0 # ip-forwarding off dhcp-option=44,192.168.1.5 # set netbios-over-TCP/IP aka WINS dhcp-option=45,192.168.1.5 # netbios datagram distribution server dhcp-option=46,8 # netbios node typeNote that you can extend the dhcp-range or change the IP address in the configuration.
Setup iptables to forward the internet traffic from Ethernet to wireless LAN
Next, make port forwarding enabled automatically on boot up:
# vi /etc/sysctl.confFind the options below and change them:
net.ipv4.ip_forward=1 net.ipv6.conf.all.forwarding=1Add the following contents to /etc/rc.local file in order to redirect internet traffic to wireless LAN:
# vi /etc/rc.local sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE sudo iptables -A FORWARD -i eth0 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT sudo iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPTYou will need to update the iptables rules depending on your wireless network interface. Reboot the system to get it to work:
# reboot
Access Point Installation - hostapd
hostapd is a user space daemon for access point and authentication servers. It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP Authenticators, RADIUS client, EAP server, and RADIUS authentication server. Please find more information at https://wireless.wiki.kernel.org/en/users/documentation/hostapd.
Below are the ssteps to get the hostapd compilation. Download the hostapd source code and build with proper parameters:
Wifi Module 0, 4, 5, 5A # wget https://w1.fi/releases/hostapd-2.6.tar.gz # tar xvfz hostapd-2.6.tar.gz # cd hostapd-2.6/hostapd /hostapd-2.6/hostapd# cp defconfig .config /hostapd-2.6/hostapd# echo CONFIG_LIBNL32=y >> .config /hostapd-2.6/hostapd# echo CONFIG_IEEE80211N=y >> .config /hostapd-2.6/hostapd# echo CONFIG_IEEE80211AC=y >> .config /hostapd-2.6/hostapd# makeYou should download a patch file if you use Wifi Module 3 to make hostapd work for Wifi Module 3 which does not support the standard nl80211 driver from hostapd on kernel 3.10, 3.14, 3.16.
Wifi Module 3 # git clone https://github.com/pritambaral/hostapd-rtl871xdrv.git # wget https://w1.fi/releases/hostapd-2.6.tar.gz # tar xvfz hostapd-2.6.tar.gz # cd hostapd-2.6 /hostapd-2.6# patch -p1 < ../hostapd-rtl871xdrv/rtlxdrv.patch /hostapd-2.6# cd hostapd /hostapd-2.6/hostapd# cp defconfig .config /hostapd-2.6/hostapd# echo CONFIG_LIBNL32=y >> .config /hostapd-2.6/hostapd# echo CONFIG_DRIVER_RTW=y >> .config /hostapd-2.6/hostapd# makeBackup the current hostapd and replace the file with the configured one:
/hostapd-2.6/hostapd# mv /usr/sbin/hostapd /usr/sbin/hostapd.org /hostapd-2.6/hostapd# cp hostapd /usr/sbin/Verify that you have installed the latest version:
/hostapd-2.6/hostpad# cd ~ # hostapd hostapd v2.6 User space daemon for IEEE 802.11 AP management, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator Copyright (c) 2002-2016, Jouni Malinen <j@w1.fi> and contributorsConfigure hostapd for Access Point use:
# vi /etc/default/hostapdFind the options below and edit:
DAEMON_CONF="/etc/hostapd/hostapd.conf" DAEMON_OPTS="-B"You can update this DAEMON_OPTS to get the logs from hostapd daemon by editing the /etc/hostapd/hostapd.conf file:
# vi /etc/hostapd/hostapd.conf The contents of the hostapd.conf files for 2.4 GHz configuration is as follows:
# HostAPD <2.4 Ghz configuration hostapd.conf file> # Interface interface=wlan0 # driver driver=nl80211 # Logging logger_syslog=-1 logger_syslog_level=3 logger_stdout=-1 logger_stdout_level=2 # CTRL-Interface ctrl_interface=/var/run/hostapd ctrl_interface_group=0 # WLAN country_code=KR ssid=OdroidAPn hw_mode=g channel=6 beacon_int=100 dtim_period=2 max_num_sta=255 rts_threshold=2347 fragm_threshold=2346 preamble=1 # WPA2 wpa=2 # WPA2 only wpa_passphrase=hardkernel wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP rsn_pairwise=CCMP auth_algs=3 # 1=wpa, 2=wep, 3=both macaddr_acl=0 wmm_enabled=1 eap_reauth_period=360000 fragm_threshold=2346 rsn_preauth=1 rsn_preauth_interfaces=wlan0 wpa_group_rekey=600 wpa_ptk_rekey=600 wpa_gmk_rekey=86400 # N-WLAN ieee80211n=1 ht_capab=[HT20+][SHORT-GI-20][DSSS_CCK-20] require_ht=0 obss_interval=0The contents of the hostapd.conf files for 2.4GHz configuration for WiFi Module 3 is as follows:
# interface interface=wlan0 # driver driver=rtl871xdrv # CTRL-Interface ctrl_interface=/var/run/hostapd ctrl_interface_group=0 # SSID ssid=OdroidAP # WLAN country_code=KR hw_mode=g channel=1 beacon_int=100 dtim_period=2 max_num_sta=255 rts_threshold=2347 fragm_threshold=2346 preamble=1 # Logging logger_syslog=-1 logger_syslog_level=3 logger_stdout=-1 logger_stdout_level=2 # passphrase wpa_passphrase=hardkernel # WPA2 wpa=3 wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP rsn_pairwise=CCMP beacon_int=100 auth_algs=3 # 1=wpa, 2=wep, 3=both macaddr_acl=0 wmm_enabled=1 eap_reauth_period=360000000 rsn_preauth=1 rsn_preauth_interfaces=wlan0 wpa_group_rekey=600 wpa_ptk_rekey=600 wpa_gmk_rekey=86400The contents of the hostapd.conf files for 5 GHz Realtek RTL8812AU chipset is as follows:
# HostAPD <5.0 Ghz configuration hostapd.conf file> ctrl_interface=/var/run/hostapd ctrl_interface_group=0 interface=wlan0 driver=nl80211 ### IEEE 802.11 ssid=Odroid5Ghz hw_mode=a channel=36 max_num_sta=128 auth_algs=1 ### DFS country_code=KR ieee80211d=1 ieee80211h=1 #ieee80211ac=1 ### IEEE 802.11n ieee80211n=1 ht_capab=[HT40+][SHORT-GI-20][SHORT-GI-40][DSSS_CCK-20] ### IEEE 802.11ac #ieee80211ac=1 #vht_oper_chwidth=1 #vht_capab=[SHORT-GI-40][RXLDPC][TX-STBC-2BY1] #vht_oper_centr_freq_seg0_idx=0 ### IEEE 802.11i wpa=2 wpa_key_mgmt=WPA-PSK wpa_passphrase=hardkernel rsn_pairwise=CCMP ### hostapd event logger logger_syslog=-1 logger_syslog_level=2 logger_stdout=-1 logger_stdout_level=2 ### WMM wmm_enabled=1 uapsd_advertisement_enabled=1 wmm_ac_bk_cwmin=4 wmm_ac_bk_cwmax=10 wmm_ac_bk_aifs=7 wmm_ac_bk_txop_limit=0 wmm_ac_bk_acm=0 wmm_ac_be_aifs=3 wmm_ac_be_cwmin=4 wmm_ac_be_cwmax=10 wmm_ac_be_txop_limit=0 wmm_ac_be_acm=0 wmm_ac_vi_aifs=2 wmm_ac_vi_cwmin=3 wmm_ac_vi_cwmax=4 wmm_ac_vi_txop_limit=94 wmm_ac_vi_acm=0 wmm_ac_vo_aifs=2 wmm_ac_vo_cwmin=2 wmm_ac_vo_cwmax=3 wmm_ac_vo_txop_limit=47 wmm_ac_vo_acm=0 ### TX queue parameters tx_queue_data3_aifs=7 tx_queue_data3_cwmin=15 tx_queue_data3_cwmax=1023 tx_queue_data3_burst=0 tx_queue_data2_aifs=3 tx_queue_data2_cwmin=15 tx_queue_data2_cwmax=63 tx_queue_data2_burst=0 tx_queue_data1_aifs=1 tx_queue_data1_cwmin=7 tx_queue_data1_cwmax=15 tx_queue_data1_burst=3.0 tx_queue_data0_aifs=1 tx_queue_data0_cwmin=3 tx_queue_data0_cwmax=7 tx_queue_data0_burst=1.5On the Wifi module 4 and Wifi module 5, Wifi module 5A, we need to tune these setting depending on the ht_capab. Replace the country_code, ssid, and wpa_passphrase as per your requirement. N-WLAN is optional and can be left out.
Check your hostpad & dnsmasq service status
The WiFi IP address must be the same of the set for /etc/network/interfaces. You have to allocate specific IP address you set into the /etc/network/interfaces file as a static method to wlan0 interface.
# Force allocation of IP address
# ifconfig wlan0 192.168.1.1
# Check IP address
# ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255
ether 40:a5:ef:f3:98:6a txqueuelen 1000 (Ethernet)
RX packets 122 bytes 13344 (13.3 KB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 49 bytes 18722 (18.7 KB)
TX errors 0 dropped 473 overruns 0 carrier 0 collisions 0
After you finish all of the setup steps, restart the services and check their statuses. Enter the following code to enable by default:
# update-rc.d hostapd enableRestart the services:
# service hostapd restart # service dnsmasq restart If you get this message when starting hostapd service, “Failed to start hostapd.service: Unit hostapd.service is masked.”, unmask that service and try it again: systemctl unmask hostapd.serviceCheck the services:
# service hostapd status # service dnsmasq statusCheck the active (running) status:
# hostapd
hostapd.service - LSB: Advanced IEEE 802.11 management daemon
Loaded: loaded (/etc/init.d/hostapd; bad; vendor preset: enabled)
Active: active (running) since Sun 2017-07-09 19:48:41 UTC; 31s ago
Docs: man:systemd-sysv-generator(8)
Process: 789 ExecStart=/etc/init.d/hostapd start (code=exited, status=0/SUCCESS)
CGroup: /system.slice/hostapd.service
└─798 /usr/sbin/hostapd -B -P /run/hostapd.pid -B /etc/hostapd/hostapd-2.6.conf
Jul 09 19:48:41 odroid systemd[1]: Starting LSB: Advanced IEEE 802.11 management daemon...
Jul 09 19:48:41 odroid hostapd[789]: * Starting advanced IEEE 802.11 management hostapd
Jul 09 19:48:41 odroid hostapd[789]: ...done.
Jul 09 19:48:41 odroid systemd[1]: Started LSB: Advanced IEEE 802.11 management daemon.
# dnsmasq
dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server
Loaded: loaded (/lib/systemd/system/dnsmasq.service; enabled; vendor preset: enabled)
Drop-In: /run/systemd/generator/dnsmasq.service.d
└─50-dnsmasq-$named.conf, 50-insserv.conf-$named.conf
Active: active (running) since Sun 2017-07-09 19:48:31 UTC; 4min 36s ago
Process: 592 ExecStartPost=/etc/init.d/dnsmasq systemd-start-resolvconf (code=exited, status=0/SUCCESS)
Process: 575 ExecStart=/etc/init.d/dnsmasq systemd-exec (code=exited, status=0/SUCCESS)
Process: 554 ExecStartPre=/usr/sbin/dnsmasq --test (code=exited, status=0/SUCCESS)
Main PID: 591 (dnsmasq)
CGroup: /system.slice/dnsmasq.service
└─591 /usr/sbin/dnsmasq -x /var/run/dnsmasq/dnsmasq.pid -u dnsmasq -r /var/run/dnsmasq/resolv.conf -7 /etc/dnsmasq.d,.dpkg-dist,.dpkg-old,
Jul 09 19:48:30 odroid dnsmasq[591]: DNS service limited to local subnets
Jul 09 19:48:30 odroid dnsmasq[591]: warning: ignoring resolv-file flag because no-resolv is set
Jul 09 19:48:30 odroid dnsmasq-dhcp[591]: DHCP, IP range 192.168.1.250 -- 192.168.1.254, lease time 1h
Jul 09 19:48:30 odroid dnsmasq-dhcp[591]: DHCP, IP range 192.168.1.20 -- 192.168.1.50, lease time 3d
Jul 09 19:48:30 odroid dnsmasq[591]: using local addresses only for domain example.com
Jul 09 19:48:30 odroid dnsmasq[591]: using nameserver 4.4.4.4#53
Jul 09 19:48:30 odroid dnsmasq[591]: using nameserver 8.8.8.8#53
Jul 09 19:48:30 odroid dnsmasq[591]: using nameserver 192.168.1.5#53 for domain example.com
Jul 09 19:48:30 odroid dnsmasq[591]: cleared cache
Jul 09 19:48:31 odroid systemd[1]: Started dnsmasq - A lightweight DHCP and caching DNS server.
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Access Point Installation - wpa_supplicant
The wpa_supplicant application is a user space application which works as a WPA supplicant and SME (to handle initiating MLME commands). Please refer to the link for further informations: https://wireless.wiki.kernel.org/en/users/documentation/wpa_supplicant.
Below are the steps to get the wpa_supplicant compilation. First, download the wpa_supplicant source code and build it:
# wget https://w1.fi/releases/wpa_supplicant-2.6.tar.gz # tar xvfz wpa_supplicant-2.6.tar.gz # cd wpa_supplicant-2.6/wpa_supplicant/ /wpa_supplicant-2.6/wpa_supplicant# cp defconfig .config # Enable AP, P2P and WPS needed to configure wpa_supplicant in AP mode. /wpa_supplicant-2.6/wpa_supplicant# echo CONFIG_P2P=y >> .config /wpa_supplicant-2.6/wpa_supplicant# echo CONFIG_AP=y >> .config /wpa_supplicant-2.6/wpa_supplicant# echo CONFIG_WPS=y >> .config /wpa_supplicant-2.6/wpa_supplicant# echo CFLAGS +=-I/usr/include/libnl3/ >> .config /wpa_supplicant-2.6/wpa_supplicant# echo CONFIG_LIBNL32=y >> .config /wpa_supplicant-2.6/wpa_supplicant# makeBackup the current wpa_supplicant and replace the file with configured one:
/wpa_supplicant-2.6/wpa_supplicant# mv /sbin/wpa_supplicant /sbin/wpa_supplicant.org /wpa_supplicant-2.6/wpa_supplicant# cp ./wpa_supplicant /sbin/Verify that you have installed the latest version:
/wpa_supplicant-2.6/wpa_supplicant# cd ~ # wpa_supplicant -v wpa_supplicant v2.6 Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> and contributorsCreate a configuration file for wpa_supplicant to run in AP mode call wpa.conf:
# vi wpa.conf
The wpa.conf file contents is as follows:
network={
ssid="odroid-WPA"
mode=2
key_mgmt=WPA-PSK
psk="hardkernel"
frequency=2437
}
Reboot the system.
# rebootNote that you can change the frequency range between 2.4 GHz and 5 GHz.
# ifconfig wlan0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255
ether 40:a5:ef:f3:98:6a txqueuelen 1000 (Ethernet)
RX packets 122 bytes 13344 (13.3 KB)
RX errors 0 dropped 1 overruns 0 frame 0
TX packets 49 bytes 18722 (18.7 KB)
TX errors 0 dropped 16 overruns 0 carrier 0 collisions 0
This is an example of starting wpa_supplicant as Access Point:
# wpa_supplicant -Dnl80211 -iwlan0 -c ~/wpa.conf Successfully initialized wpa_supplicant Using interface wlan0 with hwaddr 7c:dd:90:52:13:1e and ssid "odroid-WPA" wlan0: interface state UNINITIALIZED->ENABLED wlan0: AP-ENABLED wlan0: CTRL-EVENT-CONNECTED - Connection to 7c:dd:90:52:13:1e completed [id=0 id_str=]Start Wpa_suplicant as a server
Append the following in the /etc/rc.local file:
sudo service network-manager stop wpa_supplicant -B -Dnl80211 -iwlan0 -c /root/wap.confFor comments, questions and suggestions, please visit the original article at https://wiki.odroid.com/accessory/connectivity/wifi/wireless_ap_mode.
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