[Powerful writing] compile the WiFi firmware into the kernel and load the sdio WiFi module.

 

WiFi
The driver is loaded as compiled into the kernel, so you need
WiFi
The required firmware is compiled into the kernel together.
Helper_sd.bin sd8686.bin
Copy the two firmware files to the kernel source code directory.
Firmware
Directory. Set
Helper_sd.bin
Renamed
Sd8686_helper.bin

 

 

 

Next, configure the kernel.

1
.
Ramdisk
Startup parameters

 

2
. Add firmware

Device Driver
--"
Generic Driver options

 

 

Name of the firmware to be loaded

 

Storage path for firmware

 

3
. Configure network support

Networking Support
--"
Wireless

 

4
. Configure NIC Driver Support

Device Driver
--"
Network Device Support
--"
Wireless LAN
--"
Wireless LAN
(
IEEE 1, 802.11
)

 

5
. Configuration
SD host
Driver Support

Device Driver
--"
MMC/SD/sdio card support

 

Configure the kernel according to the preceding instructions. Burn the compiled kernel image
SD
Specified kernel location

IV,
WiFi
Operation

After the kernel is started
WiFi
Driver, attach firmware, and identify
WiFi
Module

 

It can be seen that the identified wireless network card device is named
Wlan0

 

Enter the command
Ifconfig wlan0 up
Enable
Wlan0
Let it work

 

Run commands
Iwlist wlan0 Scanning
Scan wireless hotspots