LLM_buildroot-external-m5stack/docs/wifi.md

Using WiFi

Applicable platforms: STM32MP157-DK2, STM32MP135-DK.

WiFi support is only enabled in the demo configurations.

The brcmfmac Linux kernel module for Wifi is autoloaded, thanks to udev.

You can verify that it has been correctly loaded with the lsmod command:

# lsmod | grep brcmfmac
brcmfmac              212992  0

Then you can scan access points with iw command, connect to them with wpa_supplicant, and get an IP address using the udhcpc DHCP client.

# ip link set wlan0 up
# iw dev wlan0 scan
# wpa_passphrase $SSID $PSK > /etc/wpa_supplicant.conf
# wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -B
# udhcpc -i wlan0 -q

Of course, if necessary, Buildroot supports adding network management tools such as Network Manager, Connman or systemd-networkd.