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Wireless network test based on Feiling NXP i.mx6ull

2022-07-20 09:41:00 【Kakarot GT】

One 、iMX6ULL Development board WIFI A functional test

WiFi Support ：

modular	Support
RTL8188EUS	WiFi
RTL8723BU	WiFi
RTL8723DU	WiFi

1、 USB WIFI RTL8188eus Use

explain ： USB WIFI WLAN card is an optional module , If there is a need , Please contact the Feiling embedded Online customer service on the official website .

The following for wifi Modules in STA In mode , Connect to Wireless network Test of ：

step 1：iMX6ULL Power on the development board , start-up Linux System .

step 2： Connect USB WIFI To Feiling iMX6ULL Development board USB Host Interface

step 3 ： Enter the corresponding parameters in the following format ：

-i Express wifi model ;

-s Express wifi hotspot name ;

-p The password , If no password is entered -p NONE;

The router uses wpa encryption . Specific operation instructions can be viewed wifi.sh Script .

The printed content of the connection is as follows ：

[email protected]:~# fltest_cmd_wifi.sh -i 8188 -s forlinx -p xxxx

The printed information is as follows ：

wifi 8188

ssid forlinx

pasw xxxx

usbcore: deregistering interface driver rtl8723bu

RTL871X: module exit start

usbcore: deregistering interface driver rtl8188eu

RTL871X: rtw_ndev_uninit(wlan1)

usb 1-1.3: reset high-speed USB device number 7 using ci_hdrc

RTL871X: module exit success

RTL871X: module init start

RTL871X: rtl8188eu v4.3.0.9_15178.20150907

RTL871X: build time: Mar 25 2020 02:23:46

bFWReady == _FALSE call reset 8051...

RTL871X: rtw_ndev_init(wlan0)

usbcore: registered new interface driver rtl8188eu

RTL871X: module init ret=0

==> rtl8188e_iol_efuse_patch

IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

ps: invalid option -- 'f'

BusyBox v1.24.1 (2019-04-27 02:24:01 CST) multi-call binary.

Usage: ps

Successfully initialized wpa_supplicant

rfkill: Cannot open RFKILL controRTL871X: set bssid:00:00:00:00:00:00

l device

RTL871X: set ssid [g▒isQ▒J▒)ͺ▒▒▒▒F|▒T▒▒vZ.c3▒ɚ��<▒▒▒▒] fw_state=0x00000008

ioctl[SIOCSIWAP]: Operation not permitted

ioctl[SIOCGIWSCAN]: Resource temporarily unavailable

RTL871X: indicate disassoc

wlan0: Trying to associate with 04:d7:a5:84:fa:40 (SSID='forlinx' freq=2437 MHz)

RTL871X: set ssid [forlinx] fw_state=0x00000008

RTL871X: set bssid:04:d7:a5:84:fa:40

RTL871X: start auth

RTL871X: auth success, start assoc

RTL871X: assoc success

IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

RTL871X: recv eapol packet

wlan0: Associated with 04:d7:a5:84:fa:40

RTL871X: send eapol packet

RsvdPageNum: 8

udhcpc (v1.24.1) started

RTL871X: recv eapol packet

RTL871X: send eapol packet

RTL871X: recv eapol packet

RTL871X: send eapol packet

RTL871X: set pairwise key camid:4, addr:04:d7:a5:84:fa:40, kid:0, type:AES

wlan0: WPA: Key negotiation completed with 04:d7:a5:84:fa:40 [PTKRTL871X: set group key camid:5, addr:04:d7:a5:84:fa:40, kid:2, type:AES

=CCMP GTK=CCMP]

wlan0: CTRL-EVENT-CONNECTED - Connection to 04:d7:a5:84:fa:40 completed [id=0 id_str=]

Sending discover...

Sending select for 192.168.4.129...

Lease of 192.168.4.129 obtained, lease time 36000

/etc/udhcpc.d/50default: Adding DNS 222.222.202.202

/etc/udhcpc.d/50default: Adding DNS 222.222.222.222

Finshed!

The script is finished , Can automatically assign ip And add DNS, be wifi Successful connection .

step 5：ping ip Or domain name , The order is as follows .

[email protected]:~# ping -c 4 www.baidu.com

PING www.baidu.com (220.181.38.149): 56 data bytes

64 bytes from 220.181.38.149: seq=0 ttl=51 time=26.648 ms

64 bytes from 220.181.38.149: seq=1 ttl=51 time=13.529 ms

64 bytes from 220.181.38.149: seq=2 ttl=51 time=15.656 ms

64 bytes from 220.181.38.149: seq=3 ttl=51 time=26.249 ms

--- www.baidu.com ping statistics ---

4 packets transmitted, 4 packets received, 0% packet loss

round-trip min/avg/max = 13.529/20.520/26.648 ms

step 6： Uninstall modules that have been added to the kernel .

[email protected]:~# rmmod 8188eu

The printed information is as follows ：

RTL871X: module exit start

usbcore: deregistering interface driver rtl8188eu

RTL871X: indicate disassoc

RTL871X: rtw_cmd_thread: DriverStopped(1) SurpriseRemoved(0) break at line 478

wlan0: CTRL-EVENT-DISCONNECTED bssid=04:d7:a5:84:fa:40 reason=3 locally_generated=1

RTL871X: rtw_ndev_uninit(wlan0)

RTL871X: rtw_dev_unload: driver not in IPS

usb 1-1.3: reset high-speed USB device number 7 using ci_hdrc

RTL871X: module exit success

2、 On board WIFI Use

explain ：

l wifi The frequency is 2.4G

l compatible 8723bu and 8723du Two kinds of wifi drive

l The default router is wpa encryption .

If the development board has on-board WIFI Wireless LAN card , Then weld it on the evaluation board as shown in the figure （ The following figure for 8723du）：

step 1： Check iMX6ULL Whether the development board has welded the module , The correct welding is shown in the figure above . Connect the antenna .

step 2：iMX6ULL Power on the development board , start-up Linux System , First use lsmod Check the module loading status ：

[email protected]:~# lsmod

Module Size Used by

mx6s_capture 14876 0

8723 du 1313893 0 // Default wifi Automatic loading ,8723du Successfully loaded

ov9650_camera 12446 0

Be careful ： if Feiling iMX6ULL What is welded on the development board is 8723 b u, Use lsmod Will be displayed 8723 b u

The following 8723du As an example, test description ：

step 3： test

Ø STA Pattern

This mode is used as a site , Connect to a wireless network , Operation method as follows ：

-i Express wifi model ;-s Express wifi Hot spot name ;-p The password , If no password is entered -p NONE; The router uses wpa encryption , Specific operation instructions can be viewed wifi.sh Script

[email protected]:~# fltest_cmd_wifi.sh -i 8723du -s forlinx -p xxx // Execute test script

The printed information is as follows ：

wifi 8723du

ssid forlinx

pasw xxx

usbcore: deregistering interface driver rtl8723du

usbcore: registered new interface driver rtl8723du

IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

Successfully initialized wpa_supplicant

rfkill: Cannot open RFKILL control device

udhcpc (v1.24.1) started

Sending discover...

wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN

wlan0: Trying to associate with 04:d7:a5:f9:26:1d (SSID='forlinx' freq=2427 MHz)

wlan0: Associated with 04:d7:a5:f9:26:1d

IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

wlan0: WPA: Key negotiation completed with 04:d7:a5:f9:26:1d [PTK=CCMP GTK=TKIP]

wlan0: CTRL-EVENT-CONNECTED - Connection to 04:d7:a5:f9:26:1d completed [id=0 id_str=]

nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.

Sending discover...

Sending select for 192.168.5.186...

Lease of 192.168.5.186 obtained, lease time 1800

/etc/udhcpc.d/50default: Adding DNS 222.222.202.202

/etc/udhcpc.d/50default: Adding DNS 222.222.222.222

WLAN Finshed!

The script is finished , Can automatically assign ip And generate DNS, be wifi Successful connection .

ping ip Or domain name , The order is as follows ：

[email protected]:~# ping -c 5 www.baidu.com

The printed information is as follows ：

PING 192.168.4.1 (192.168.4.1): 56 data bytes

64 bytes from 192.168.4.1: seq=0 ttl=128 time=39.783 ms

64 bytes from 192.168.4.1: seq=1 ttl=128 time=81.529 ms

64 bytes from 192.168.4.1: seq=2 ttl=128 time=15.236 ms

64 bytes from 192.168.4.1: seq=3 ttl=128 time=12.076 ms

64 bytes from 192.168.4.1: seq=4 ttl=128 time=16.300 ms

--- 192.168.4.1 ping statistics ---

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max = 12.076/32.984/81.529 ms

wifi The signal

see WiFi The signal method is as follows ：

[email protected]:~# cat /proc/net/wireless | grep wlan0 | awk '{print $3}' // Get the signal strength

78.

[email protected]:~# cat /proc/net/wireless | grep wlan0 | awk '{print $4}' // Get signal quality , Company dBm

-68.

[email protected]:~# cat /proc/net/wireless | grep wlan0 | awk '{print $5}' // Background noise of network port , Company dBm

-256.

AP Pattern

explain ：

l This module supports AP Pattern , The theoretical maximum connected users are 8 individual .

l This example is Ethernet eth0 Instructions for connecting the router , After configuring Ethernet , Need to test eth0 Whether you can connect to the Internet , If you can connect to the Internet （ Method reference “ Wired network card ” chapter ）, Please continue to follow the steps , If not, please check whether the Ethernet or router connection is normal .

Working in AP In mode , Mobile phones and other devices can be directly connected to modules .

Set up Ethernet IP, Configure network firewall ：

[email protected]:~# udhcpc -i eth0 // Automatically assigned IP, If you test eth0 Normal network , This step is not necessary

[email protected]:~# echo 1 > /proc/sys/net/ipv4/ip_forward // open IP forward

[email protected]:~# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE// Set forwarding rules

Set up WiFi The pattern of IP

Make sure that the module 8723bu Already loaded .

[email protected]:~# ifconfig wlan0 up // open WiFi

[email protected]:~# ifconfig wlan0 192.168.0.10 netmask 255.255.255.0 // Set up IP And subnet mask

[email protected]:~# ifconfig wlan0 promisc // Set up wlan0 For hybrid mode

Turn on AP

[email protected]:~# udhcpd /etc/udhcpd/udhcpd.conf & //WiFi Address 、 gateway Wait for configuration information

[email protected]:~# hostapd -d /etc/hostapd/hostapd.conf & // encryption 、 user name 、 Password and other settings

hostapd.conf In file ：ssid Username ,/ Is password

Mobile terminals such as mobile phones can use WiFi Connected to the development board AP hotspot ,iMX6ULL The development board uses the following user name and password by default ：

Hotspot name ：forlinxtest password ：1234567890

step 4： Uninstall modules that have been added to the kernel ：

[email protected]:~# rmmod 8723du

usbcore: deregistering interface driver rtl8723du

wlan0: CTRL-EVENT-DISCONNECTED bssid=04:d7:a5:f9:26:1d reason=0

FETMX6ULL-C The core board is based on NXP i.MX6U The third core board launched by series processor , Mature technology programme , Bring a stable and reliable new experience . Core board size is only 40*29mm, And USES the 2mm Close the high board to board connector , Put a small volume 、 The advantages of easy disassembly are integrated .iMX6ULL Series core board -iMX6ULL Core board arm Cortex-A7 Linux Core board - ARM Core board - Baoding Feiling Embedded Technology Co., Ltd

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