Summary
Setup Samsung ARTIK Wi-Fi Client, and configured auto connect to Wi-Fi after reboot, with successful result.
ARTIK 530 attached the Antenna,
Wi-Fi Client Configuration
Follow this Link to configure the Wi-Fi Client, the ifcfg-eth0 configuration is setup already as below,
[root@artik ~]# cat /etc/redhat-release
Fedora release 24 (Twenty Four)
[root@artik ~]#
[root@artik ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="dhcp"
ONBOOT="yes"
TYPE="Ethernet"
PERSISTENT_DHCLIENT="yes"
[root@artik ~]#
Setting as below,
[root@artik connman]# cat /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
update_config=1
network={
ssid="SA-WPGHOLDINGS"
psk=XXXXce5c1e200e6b3cbcdc2328c04b355fd9751d55e22aa0e84ad015b81aXXXX
}
[root@artik connman]# wpa_supplicant already configured start automatically,
[root@artik connman]# systemctl status wpa_supplicant
● wpa_supplicant.service - WPA supplicant
Loaded: loaded (/usr/lib/systemd/system/wpa_supplicant.service; disabled; vendor preset
Active: active (running) since Tue 2017-06-13 00:47:55 EDT; 2h 0min ago
Main PID: 2045 (wpa_supplicant)
CGroup: /system.slice/wpa_supplicant.service
└─2045 /usr/sbin/wpa_supplicant -c /etc/wpa_supplicant/wpa_supplicant.conf -u -
Jun 13 00:47:55 artik systemd[1]: Started WPA supplicant.
Jun 13 00:47:55 artik wpa_supplicant[2045]: Successfully initialized wpa_supplicant
Jun 13 00:47:55 artik wpa_supplicant[2045]: WPS: Converting push_button to virtual_push_bu
Jun 13 00:47:55 artik wpa_supplicant[2045]: WPS: Converting push_button to virtual_push_bu
Jun 13 00:47:55 artik wpa_supplicant[2045]: WPS: Converting push_button to virtual_push_bu
Jun 13 00:47:58 artik wpa_supplicant[2045]: wlan0: Trying to associate with c0:56:27:a8:fd
Jun 13 00:47:58 artik wpa_supplicant[2045]: wlan0: Associated with c0:56:27:a8:fd:d6
Jun 13 00:47:58 artik wpa_supplicant[2045]: wlan0: WPA: Key negotiation completed with c0:
Jun 13 00:47:58 artik wpa_supplicant[2045]: wlan0: CTRL-EVENT-CONNECTED - Connection to c0
Jun 13 00:47:58 artik wpa_supplicant[2045]: p2p0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE
lines 1-17/17 (END)Reboot WIFI cannot connect automatically issue
You can configure your system to automatically reconnect Wi-Fi after each reboot. However the system init script provided on the website cannot work properly, the Wi-Fi cannot connect after reboot, refer to this Link to solve this problem.
The root cause is when executing the command dhclient wlan0, the wlan0 interface is not up, caused command execution fail, so need to wait until wlan0 is up, below updated init script can work properly.
The updated init script is as below,
#! /bin/bash
# chkconfig: - 99 10
start()
{
i=1
while ! ifconfig wlan0 2>>/tmp/wlan_err.log >>/tmp/wlan.log
do
echo "-------- run $i --------" >>/tmp/wlan.log
ifconfig wlan0 2>>/tmp/wlan_err.log >>/tmp/wlan.log
sleep 1
i=$((i + 1))
done
# echo "-------- starting wpa_supplicant --------" >>/tmp/wlan.log
# /usr/sbin/wpa_supplicant -iwlan0 -c/etc/wpa_supplicant/wpa_supplicant.conf >>/tmp/wlan.log &
i=1
while ! wpa_cli status wlan0 | grep -iq "wpa_state=completed"
do
echo "-------- run $i --------" >>/tmp/wlan.log
sleep 1
i=$((i + 1))
done
echo "-------- starting dhcpclient --------" >>/tmp/wlan.log
/usr/sbin/dhclient wlan0 >>/tmp/wlan.log
}
stop()
{
kill dhclient
}
restart()
{
stop
start
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
*)
echo "Usage:$0 {start|stop|restart}"
esac
exit 0Below shell script experiment the command return (0 or 1).
#! /bin/bash
if ! ifconfig wlan0 >> null
then
echo "does not exist wlan0"
fi
if ! ifconfig wlan1 >> null
then
echo "doesn't exist wlan1"
fiBelow is the startup log when executing the init script, you can see until wlan0 is up and can grep the characters "wpa_state=completed", then execute command dhclient wlan0.
[root@artik ~]# cat /tmp/wlan_err.log
wlan0: error fetching interface information: Device not found
wlan0: error fetching interface information: Device not found
wlan0: error fetching interface information: Device not found
wlan0: error fetching interface information: Device not found
wlan0: error fetching interface information: Device not found
wlan0: error fetching interface information: Device not found
[root@artik ~]# cat /tmp/wlan.log
-------- run 1 --------
-------- run 2 --------
-------- run 3 --------
wlan0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 70:2c:1f:24:92:40 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
-------- run 1 --------
-------- run 2 --------
-------- run 3 --------
-------- run 4 --------
-------- starting dhcpclient --------
The Ethernet and Wi-Fi connect result is as below,
[root@artik ~]# ifconfig
eth0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500
inet 10.65.103.38 netmask 255.255.255.0 broadcast 10.65.103.255
inet6 fe80::742a:faff:fe0e:5a07 prefixlen 64 scopeid 0x20<link>
ether 76:2a:fa:0e:5a:07 txqueuelen 1000 (Ethernet)
RX packets 85290 bytes 7447811 (7.1 MiB)
RX errors 0 dropped 412 overruns 0 frame 0
TX packets 124 bytes 13321 (13.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 64
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 179 bytes 14535 (14.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 179 bytes 14535 (14.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
p2p0: flags=-28669<UP,BROADCAST,MULTICAST,DYNAMIC> mtu 1500
ether 72:2c:1f:24:92:40 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.65.109.168 netmask 255.255.255.0 broadcast 10.65.109.255
inet6 fe80::722c:1fff:fe24:9240 prefixlen 64 scopeid 0x20<link>
ether 70:2c:1f:24:92:40 txqueuelen 1000 (Ethernet)
RX packets 101955 bytes 30356888 (28.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8891 bytes 619061 (604.5 KiB)
TX errors 0 dropped 199 overruns 0 carrier 0 collisions 0
[root@artik connman]# cat /etc/resolv.conf
; generated by /usr/sbin/dhclient-script
search wpgholdings.com
nameserver 10.65.11.81
nameserver 10.65.11.82
[root@artik connman]#
[root@artik ~]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=53 time=495 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=53 time=5.27 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=53 time=11.8 ms
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 5.277/170.722/495.066/229.361 ms
[root@artik ~]#
Reference
Samsung ARTIK Configuring Ethernet
Where do the antennas go?
Ethernet and Wi-Fi Networks
ARTIK Wi-Fi Client Configuration
Wifi didn’t setup automatically