BPI-R2 2.4Ghz and 5.6Ghz Wifi Working fine

garywang · January 4, 2018, 4:15pm

Do you connect an antenna to R2 board?

asprakash · January 5, 2018, 5:48am

@garywang Nop. I did not. Is it mandatory?.

frank-w · January 5, 2018, 9:19am

without antenna you have very bad transmission quality…if your router does not stand next to your bpi or you have overlapping wlans connect or scanning may fail

asprakash · January 9, 2018, 1:02pm

Hi Frank. I confirmed that I can able to connect my wifi router when I bring my BPI-R2 near to router. So its signal issue. I will use the antenna for better performance. Thanks.

promelectronshchic · January 30, 2018, 8:32am

Hello! Thanks everybody for facing problems with AP. Very good wrote here http://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:wlan#internal , as frank-w pointed. I set up AP according that reference. Now I have AP with static ip, also I need dhcp server run.

ntech · January 30, 2018, 10:05am

Believe it or not: I got ap0 running and I can “see” my accesspoint. But performance is poor for only a couple of meters. I believe this is an antenna issue as I still use this tiny-little-plastic-whatsoever, so can someone please recommend an antenna solution?

frank-w · January 30, 2018, 12:59pm

I have bought a antenna with cable on ebay…

6dbi with rp-SMA To IPEX/u-FL cable

Simply search for that…officially a 5dbi is recommended

ntech · January 30, 2018, 2:44pm

Thank you, already ordered

promelectronshchic · January 30, 2018, 3:24pm

Maybe some one configured AP with DHCP server. I have error during starting dhcp server.

frank-w · January 30, 2018, 3:32pm

Look in my wiki,there is dnsmasq used as dhcp on ap0

promelectronshchic · January 30, 2018, 4:15pm

I created a file in ‘/etc/dnsmasq.d/interfaces.conf’ with:

#interface=eth0
#interface=wlan0
#interface=eth1
interface=ap0
 
# DHCP-Server not active for Interface
#no-dhcp-interface=ppp0
no-dhcp-interface=eth0
no-dhcp-interface=eth1
 
#dhcp-authoritative
dhcp-range=ap0,192.168.10.100,192.168.10.150,255.255.255.0,48h
dhcp-option=ap0,3,192.168.10.1
#dhcp-range=wlan1,192.168.11.100,192.168.11.150,255.255.255.0,48h
#dhcp-option=wlan1,3,192.168.11.1

Then echo A >/dev/wmtWifi (activate AP-Mode) hostapd -dd /etc/hostapd/hostapd.conf

Then started 'service dnsmasq start'

Wifi AP is visible, but clients get strange ip and mask 255.255.0.0

frank-w · January 30, 2018, 4:20pm

You must enable the dnsmasq.d folder in /etc/dnsmasq.conf

Ok, i see that this part is missing on top,but it’s in ip-configuration-section

/etc/dnsmasq.conf (activate line by removing # on begin of line)

conf-dir=/etc/dnsmasq.d

promelectronshchic · January 30, 2018, 4:45pm

I missed that one, thank you. I edited file Uncommented only one row. And restart dnsmasq, but the same, client can’t get ip. What else I can do wrong?

# Include another lot of configuration options.
#conf-file=/etc/dnsmasq.more.conf
conf-dir=/etc/dnsmasq.d

# Include all the files in a directory except those ending in .bak
#conf-dir=/etc/dnsmasq.d,.bak

# Include all files in a directory which end in .conf
#conf-dir=/etc/dnsmasq.d/,*.conf

frank-w · January 30, 2018, 4:51pm

Have you set an ip+subnet to your ap0-interface?

any errors (syslog) when starting dnsmasq?

promelectronshchic · January 30, 2018, 5:00pm

Well done! Clients are getting ip correctly! I thought that one must be executed only once… Frank W, Thank you! And one more time for your wiki.

frank-w · January 30, 2018, 5:05pm

Since the ap is created manually after boot via wmt-tools/echo the ip must be set after that. Thats why i do that all with script. But i dont’t know if uploaded my last version.

Currently there is a Problem after stopping/restarting hostapd…maybe this can be fixed with echo 0>/dev/wmtWifi,but i have not tested it yet…and after that we must start at echo A…

frank-w · February 1, 2018, 4:21pm

i have tested and can confirm that AP is visible again after killing hostapd if wifi device is resetted via

echo 0 > /dev/wmtWifi
echo A > /dev/wmtWifi

Yusuf_Bulbul · February 1, 2018, 4:53pm

I’ve test the AP mode, find it works fine, please follow my steps to enable it.

Firstly please install Ubuntu 16.04 image, and then:

Remove pkg wpasupplicant(apt-get remove wpa_supplicant) if you’re using Ubuntu 16.04 image

Comment out echo 1 > ${{WIFI_DEV} in /etc/init.d/wifi_enable if you’re using Ubuntu 16.04 image

Reboot

Run command “echo A >/dev/wmtWifi”

Run comand : hostapd -dd -C /etc/hostapd/hostapd.conf

Below is an example of hostapd.conf: hw_mode=g interface=ap0 driver=nl80211 channel=1 auth_algs=1 ssid=test Also the patch @BitMaster provided is delivered to github. Thanks a lot, BitMaster. https://github.com/BPI-SINOVOIP/BPI-R2-bsp/commit/219be3221aadb2d316557df8064bb231ca46ed5123

When I try to apt-get remove wpa_supplicant, It does not found any package. When I try, apt-get remove wpasupplicant, It deletes networks manager too.

Also "hostapd -dd -C /etc/hostapd.conf " command is not working.

frank-w · February 1, 2018, 4:57pm

apt-get remove wpasupplicant

is right command, and yes you cannot use Network-manager if you want to use AP-Mode

make sure you have created a config /etc/hostapd.conf if passing that to hostapd…i did not use -C flag of hostapd

Yusuf_Bulbul · February 1, 2018, 5:16pm

İf I cannot use network manager, How Will I make hotspot configs or options? I mean How can I bridge eth0 to wireless and arrange or enable a hotspot name, password or specifications?

Also, Any hostapd app is not enable on lastest Ubuntu image, I have installed the app after. So, There is no /etc/hostapd/hostapd.conf