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2. Setup

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Johan Vandegriff edited this page Sep 2, 2022 · 10 revisions

Setup

Format sdcard

lsblk # get sdard name
sudo fdisk /dev/mmcblk0
# at this point follow the prompts
d # delete partition
g # create new empty GPT
n # create new partition
1 # partition number 1
  # press enter pass default sizes
  # 
p # to list partitions
w # write the table.
sudo mkfs.ext4 -F /dev/mmcblk0 # format the partition
mkdir /media/sdcard
sudo mount /dev/mmcblk0 /media/sdcard

To make the mountpoint persistent on reboot, add this to /etc/fstab:

/dev/mmcblk0 /media/sdcard ext4 noatime,errors=remount-ro 0 1

Networking

WiFi

You can use a WiFi to ethernet bridge adapter such as IOGear Universal Wi-Fi N Transmitter- Ethernet to Wi-Fi N 300Mbps found here on Amazon.

There are only a few WiFi adapters that work with the BBB.

Once you have one you will need to either use nmtui a nice text UI to setup your network. Or do it manually.

  • Edit /etc/network/interfaces add a new section for wifi. This assumes the adapter is registered as wlan0 interface.
  cat <<'EOF' >> /etc/network/interfaces
# WiFi Example
allow-hotplug wlan0
auto wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
EOF
  • Create or add to /etc/wpa_supplicant/wpa_supplicant.conf
    • If it doesn't exist
cat <<'EOF' >> /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=US
EOF
  • Add your WiFi network creds. Repeat for as many networks as you want
wpa_passphrase MYSSID passphrase >> /etc/wpa_supplicant/wpa_supplicant.conf
  • If you've added more than one network you can give each one a priority but adding priority to each block. Higher numbers means higher precedence, which mean those networks will be connected to first.
network={
        ...
        priority=<a number>
}
  • Listed at the end of /etc/network/interfaces are some commands to run. I had to run these to connect to the network I wanted to.
##connman: WiFi
connmanctl
connmanctl> tether wifi off
connmanctl> enable wifi
connmanctl> scan wifi
connmanctl> services
connmanctl> agent on
connmanctl> connect wifi_*_managed_psk
connmanctl> quit

Add new user

See setup script.

Troubleshooting

  • No HDMI out: See next bullet if you updated manually with something like apt update && apt upgrade
  • Don't manually update the system use 
    sudo /opt/scripts/tools/update_kernel.sh

Wifi

sudo rm /var/run/wpa_supplicant/wlan0
sudo /etc/init.d/networking restart
sudo ifdown wlan0
sudo ifup wlan0
sudo dhclient


sudo wpa_cli reconfigure
systemctl status networking.service
journalctl -xe
sudo wpa_supplicant -B -iwlan0 -c/etc/wpa_supplicant/wpa_supplicant.conf -D nl80211

Disable HDMI and Audio

Edit /boot/uEnv.txt. Uncomment or add lines

disable_uboot_overlay_video=1
disable_uboot_overlay_audio=1

This is needed to allow for more GPIO pins. For example P9_31.
Then run the below command to set P9_31 as output:
$ config-pin P9_31 pruout

References

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