Seeed STM32MP1开发板教程（1）Wi-Fi的使用

设备树替换

Seeed在出厂烧录的固件中挂载的设备树为stm32mp1-seeed-npi-base.dtb,默认情况下此设备树是不支持Wi-Fi的，如需使用Wifi功能就需要挂载stm32mp1-seeed-npi-full.dtb这个设备树。

直接修改uEnv.txt文件，此文件会在uboot引导Linux内核的时候主动去加载/boot/dtbs/4.19.9-stm32-r1目录下指定的设备树文件。

打开uEnv.txt

vim /boot/uEnv.txt

编辑uEnv.txt文件将dtb修改为stm32mp1-seeed-npi-full.dtb

#Docs: http://elinux/Beagleboard:U-boot_partitioning_layout_2.0

uname_r=4.19.9-stm32-r1
#uuid=
dtb=stm32mp1-seeed-npi-full.dtb		##修改此处

###U-Boot Overlays###
###Documentation: http://elinux/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays
###Master Enable
enable_uboot_overlays=1
###
###custom overlays
uboot_overlay_addr0=/lib/firmware/stm32mp1-seeed-pwm-overlay.dtbo


#uboot_overlay_addr0=/lib/firmware/<file0>.dtbo
#uboot_overlay_addr1=/lib/firmware/<file1>.dtbo
#uboot_overlay_addr2=/lib/firmware/<file2>.dtbo
#uboot_overlay_addr3=/lib/firmware/<file3>.dtbo
#uboot_overlay_addr4=/lib/firmware/<file4>.dtbo
#uboot_overlay_addr5=/lib/firmware/<file5>.dtbo
#uboot_overlay_addr6=/lib/firmware/<file6>.dtbo
#uboot_overlay_addr7=/lib/firmware/<file7>.dtbo
###
###U-Boot fdt tweaks... (60000 = 384KB)
#uboot_fdt_buffer=0x60000
###U-Boot Overlays###

cmdline=coherent_pool=1M net.ifnames=0 quiet

#In the event of edid real failures, uncomment this next line:
#cmdline=coherent_pool=1M net.ifnames=0 quiet video=HDMI-A-1:1024x768@60e

#Use an overlayfs on top of a read-only root filesystem:
#cmdline=coherent_pool=1M net.ifnames=0 quiet overlayroot=tmpfs

##enable Generic eMMC Flasher:
##make sure, these tools are installed: dosfstools rsync
#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3-stm32mp1.sh


# specify kernel eth0 mac address
ethaddr=42:9a:42:e1:f7:23

Wi-Fi连接

robot@ev3dev:~$ sudo connmanctl
Error getting VPN connections: The name net.connman.vpn was not provided by any
connmanctl> enable wifi
Enabled wifi
connmanctl> scan wifi
Scan completed for wifi
connmanctl> services
*AO Wired                ethernet_b827ebbde13c_cable
                         wifi_e8de27077de3_hidden_managed_none
    AH04044914           wifi_e8de27077de3_41483034303434393134_managed_psk
    Frissie              wifi_e8de27077de3_46726973736965_managed_psk
    ruijgt gast          wifi_e8de27077de3_7275696a67742067617374_managed_psk
    schuur               wifi_e8de27077de3_736368757572_managed_psk
connmanctl> agent on
Agent registered
connmanctl> connect wifi_e8de27077de3_41483034303434393134_managed_psk		##对应的wifi名称的实际编码
Agent RequestInput wifi_e8de27077de3_41483034303434393134_managed_psk
  Passphrase = [ Type=psk, Requirement=mandatory ]
Passphrase? *************			##wifi密码
Connected wifi_e8de27077de3_41483034303434393134_managed_psk
connmanctl> quit