In previous post we already cover about how we can Enable the Wi-Fi. Until then, we still unable to use them in our linux. In this part, we shall cover how to configure and connect to Wi-Fi hotspot using some tools we will enable and configure these tools using configuration file.

Here we go:

$ make menuconfig

1. Enable wireless tools, dhcpcd and dropbear
   networking application:

• Target packages
• – Networking applications
  [] dhcpcd [] dropbear
  [*] wireless tools

1. Enable libpjsip

• Target packages
• – Libraries
• – – Networking
• – – – [*] libpjsip

1. create password for root user (important to access via ssh):
   System configuration —>
   () Root password

To configure wireless we will use and configure wpa_supplicant we will use rootfs overlay which we already setup at the post before:

Editing wpa_supplicant.conf:

$ wpa_passphrase SSID pass
network={
ssid=”SSID”
#psk=”PASSword”
psk=9d62b9cb3ca9f032bffd7257f8453acfcee2d91d600501a05f491fcc04a8d075
}
add the configuration above to /etc/wpa_supplicant.conf at our target rootfs:

$ mkdir board/tryingrootfs/beagleboneblack/rootfs-overlay/etc/
$ vi board/tryingrootfs/beagleboneblack/rootfs-overlay/etc/wpa_supplicant.conf

[i]

network={
ssid=”SSID”
#psk=”PASSword”
psk=9d62b9cb3ca9f032bffd7257f8453acfcee2d91d600501a05f491fcc04a8d075
}

[esc]

[:wq]

$ mkdir -p board/tryingrootfs/beagleboneblack/rootfs-overlay/etc/init.d
$ vi board/tryingrootfs/beagleboneblack/rootfs-overlay/etc/init.d/S99wlan

[i]

!/bin/sh

echo Starting WLAN
/usr/bin/wlan_up &

[:wq]

change the mode of the file so it’s executable:
$ chmod +x board/tryingrootfs/beagleboneblack/rootfs-overlay/etc/init.d/S99wlan

$ mkdir -p board/tryingrootfs/beagleboneblack/rootfs-overlay/usr/bin
$ vi board/tryingrootfs/beagleboneblack/rootfs-overlay/usr/bin/wlan_up

[i]

!/bin/sh

until iwconfig | grep wlan0; do sleep 5; echo ” tick “; done
ifconfig wlan0 up
wpa_supplicant -iwlan0 -c /etc/wpa_supplicant.conf -Dwext -B dhclient
udhcpc -i wlan0

[:wq]
$ chmod +x board/tryingrootfs/beagleboneblack/rootfs-overlay/usr/bin/wlan_up

Create our image:
$ make
Then write the image to micro sd-card and test if our beaglebone can connect to the Wi-Fi we describe in wpa_supplicant.conf.