5. Wi-Fi Operation

5.1. STABasic Mode Operations

5.1.1. Load the driver

Steps 1. Driver

need /mnt/system/ko/3rdunder already under ofFile， ModuleLoadnot ko:

[root@cvitek]/mnt/system/ko/3rd# ls
8188fu.ko    8189fs.ko

Note， wifiDriverand inlinuxSource CodeContentsin the tree， with build-in， Build ko。

insmod /mnt/system/ko/3rd/8189fs.ko
or
insmod /mnt/system/ko/3rd/8188fu.ko

Steps2. ViewDriver Success

Executeshell Command：

ifconfig -a

If Success，caninExecuteshellCommandafter to wlan0Ethernet Port

_images/image3.png

5.1.2. Start Wi-Fi and connect to the AP

Steps1. Wlan0Ethernet Port

scExecuteshellCommand：

ifconfig wlan0 up

Steps2. wpa_supplication

Execute shell Command：

echo "ctrl_interface=/var/run/wpa_supplicant" >/tmp/wpa_supplicant.conf
wpa_supplicant -iwlan0 -Dnl80211 -c/tmp/wpa_supplicant.conf &

  • -iwlan0 IndicatesUsewlan0Interface

  • -Dnl80211 IndicatesUsecfg80211Interface

Steps3. wpa_cli

ExecuteshellCommand：

wpa_cli -i wlan0

ExecuteSuccess “>”

_images/image4.png

Steps4. Scan Nearby NetworksAP

in “>” afterExecuteas followsCommand：

scan

in “CTRL-EVENT-SCAN-RESULTS”after, Execute

scan_results

can toScanResult

_images/image5.png

Steps 5. AP

  • ConfigurationisWPA-PSK/WPA2-PSKAuthentication and EncryptionTypeMethodofAP

  1. in“>” afterExecuteas followsCommand，with ID （ Exampleinis0）：

    add_network

  2. Configuration ofSSID （ ExampleinofSSIDisSW-test， Steps4 ）

    set_network 0 ssid “SW-test”

  3. Configuration EncryptionMethodandPassword ( SW-testPasswordis012345678)

    set_network 0 psk “012345678”


  4. select_network 0

  5. toCTRL-EVENT-CONNECTED，If ， Indicates Success。orcanExecute”status”Command，Query Connection Status

    _images/image5.png

  6. Input“quit” wpa_cli, ExecuteshellCommandas followswith IPAddress

    udhcpc -b -i wlan0 -R &

  7. ExecutepingCommand, with , ex.

    Ping 8.8.8.8

  • Configurationisopen systemofAP

    StepsandConfigurationisWPA-PSK/WPA2-PSKAuthentication and EncryptionTypeMethod ， inConfigurationThe network encryption method requires enteringas followsCommand：

    set_network 0 key_mgmt NONE

5.1.3. Disable Wi-Fi and unload the driver

Steps 1. Executeshell Commandas follows：

ifconfig wlan0 down

Steps 2. Executeas followsshellCommand:

rmmod 8189fs.ko
or
rmmod 8188fu.ko

5.2. SoftAPBasic Mode Operations

5.2.1. Load the driver

DriverMethodandSTAMode ，PleaseRefer toChapter 5.1.1.Load the driver

5.2.2. hostapdConfiguration, udhcpd Configuration, and SoftAP Startup

SoftAPneed hostapd。andwpa_supplicant ，hostpadCan ConfigurationAP of ，withand Flow。

Steps1. hostpad。ExecuteshellCommands

ifconfig wlan0 192.168.1.1 up
hostapd /etc/network/hostapd.conf -B -i wlan0

Steps2. udhcpdwith IP ，Executeshell Commands

udhcpd /etc/network/udhcpd.conf

Note：

  • can Modifyhostapd.conf ConfigurationSoftAPofssid, channel, Encryption Methodetc.， inSDK of/ramdisk/rootfs/overlay/{chip_name}/etc/network or on the platformof/etc/network。for examplecanModifyssidwithandwpa_passphrase ConfigurationAP Namewithand Password

    interface=wlan0
ctrl_interface=/var/run/hostapd
ssid=CV184X_EVB
channel=6
wpa=3
wpa_passphrase=012345678

canRefer to: http://manpages.ubuntu.com/manpages/bionic/man5/udhcpd.conf.5.html

  • can Modifyudhcpd.conf ConfigurationSoftAP ofIP 。udhcpd.conf inSDK of/ramdisk/rootfs/overlay/{chip_name}/etc/network or on the platformof/etc/network。

    # The start and end of the IP lease block
start       192.168.1.10   #default: 192.168.0.20
end      192.168.1.254   #default: 192.168.0.254