[vc_row][vc_column][vc_column_text]pcDuino3 has built-in WiFI module,  but the module type is rtl8188cus, which  is different from the previous model  rt5370. This wifi module also supports  AP function. Many users have played with the AP mode of Rtl8188 on Raspberry Pi, but the same method just have issue on pcDuino3. In this tutorial, we will show  how to start WiFi AP function on pcDuino.[/vc_column_text][vc_tour][vc_tab title=”Download the software” tab_id=”1418221661-1-76″][vc_column_text]1. Download the software tool

sudo su

sudo apt-get update

sudo apt-get install git gedit

If you do not know where to type, see the following picture.

2. Download the official driver code.

#http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=21&PFid=48&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#2742

First copy the code to the command line, then copy to the browser, then you can download. Notice the download path is under /home/ubuntu/Downloads, do not download wrong.[/vc_column_text][/vc_tab][vc_tab title=”Install hostapd and set dhcp” tab_id=”1418221661-2-69″][vc_column_text]1. The hostapd which build-in driver does not make  into system services, here thanks to the open source, a player has successfully made into the service system.

git clone https://github.com/jenssegers/RTL8188-hostapd

cd RTL8188-hostapd/hostapd

sudo make install

Be patient and wait the command appear again. 

2. Instal 8188 hostapd. 

cd /home/ubuntu/Downloads

unzip  RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911.zip

cd  RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911/wpa_supplicant_hostapd

tar xvf wpa_supplicant_hostapd-0.8_rtw_r7475.20130812.tar.gz

cd  wpa_supplicant_hostapd-0.8_rtw_r7475.20130812/hostapd

sudo make install

3.  Configure the hostapd. 

Input the following command and check what you want.

ifconfig
<img src="http://cnlearn.linksprite.com/wp-content/uploads/2014/12/%E5%9B%BE%E7%89%8731.png" alt="图片3" />
Note: all the command must write in lowercase

gedit /etc/hostapd/hostapd.conf

The original iuse vim, to tell the truth for newcomers (especially do not good at keyboard) a bit too difficult, so use gedit directly.

# Basic configuration
 interface=wlan5  #根据你自己的接点
ssid=wifi
channel=1
#bridge=br0
 # WPA and WPA2 configuration
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=3
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
 # Hardware configuration
driver=rtl871xdrv
ieee80211n=1
hw_mode=g
device_name=RTL8192CU
manufacturer=Realtek

<b>ervice hostapd restart
</b>

Set the WiFi hot name as wifi, the password as 12345678

Now you need to clear the wifi password, then you can search the wifi hot through your telephone, but still can not connect.

4. Need to configure the network.

gedit /etc/network/interfaces

auto wlan5

iface wlan5 inet static

address 192.168.100.1

netmask 255.255.255.0

Copy this to the command, all will be well done.

sudo /etc/init.d/networking restart
<b>
5. configure </b><b>dhcp 
</b>

gedit /etc/dhcp/dhcpd.conf #在最后面加

subnet 192.168.100.0 netmask 255.255.255.0 {

  range 192.168.100.10 192.168.100.100;

  option routers 192.168.100.1;

  option domain-name-servers 8.8.8.8;

}

My option domain-name-servers is 202.102.152.3; ( do not miss ;), this is for the phone to set DNS service.

service isc-dhcp-server restart

[/vc_column_text][/vc_tab][vc_tab title=”Set the startup” tab_id=”1418221712479-2-10″][vc_column_text]After the Hostapd start then the dhcpd can start, dhcpd close then the hostapd can close.

update-rc.d hostapd defaults 80 20

update-rc.d isc-dhcp-server defaults 90 10

reboot 

At this time, the phone may still can't get into the website. 
It troubles me a few d

[/vc_column_text][/vc_tab][vc_tab title=”Set NAT ” tab_id=”1418221713322-3-7″][vc_column_text]

sudo apt-get install iptables

sudo sh -c 'echo 1 > /proc/sys/net/ipv4/ip_forward'

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

Now you can connect to the website.

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