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MaaXBoard Nano - Yocto Lite Image Usage

This is a simple usage of the Yocto Lite Image for MaaXBoard Nano.

Network

DHCP

Yocto Lite Image use dhcpcd as the DHCP clint. It will automatically retrieve IP from the DHCP server. if you want to config a static IP address, follow the below guides:

nano /etc/dhcpcd.conf

Add content like below example:

interface eth0
static ip_address=192.168.2.100/24
static routers=192.168.2.1
static domain_name_servers=192.168.2.252 8.8.8.8

SSH

SSHD service will automatically enabled and started after system reboot.

systemctl start sshd.socket
systemctl stop sshd.socket
systemctl restart sshd.socket

SSHD config

nano /etc/ssh/sshd_config

After modify the ssh_config, you should restart the sshd.socket service.

If you want to login ssh with root, add the below contents to sshd_config:

PermitRootLogin yes

After edit the sshd_config file, you should restart the sshd service with:

sudo systemctl restart sshd.socket

Wi-Fi

Connecting Wi-Fi with CLI

# scan
sudo iwlist mlan0 scan

Adding the network details

nano /etc/wpa_supplicant.conf

Network info in wpa_supplicant.conf

network={
    ssid="testing"
    psk="testingPassword"
}

Connect

wpa_supplicant -B -i mlan0 -c /etc/wpa_supplicant.conf
# use ifconfig to verify
ifconfig mlan0

Auto Connect Wi-Fi after reboot (System Service)

Prepare config file

mkdir -p /etc/wpa_supplicant
cp /etc/wpa_supplicant.conf /etc/wpa_supplicant/wpa_supplicant-mlan0.conf

Note: Add network info to /etc/wpa_supplicant/wpa_supplicant-mlan0.conf

systemctl start wpa_supplicant@mlan0
systemctl enable wpa_supplicant@mlan0

# log info
#journalctl -u wpa_supplicant@mlan0

AP

Currently, The image doesn't support AP.

Bluetooth

Bluetooth Audio

Run pulseaudio daemon first

$ pulseaudio -D -v

Pair and connect the audio device

$ bluetoothctl
[bluetooth]# power on
[bluetooth]# pairable on
[bluetooth]# scan on
[bluetooth]# scan off
[bluetooth]# pair <mac address>
[bluetooth]# trust <mac address>
[bluetooth]# quit

List the audio devcie

$ pactl list

Play an audio file with aplay

$ aplay -D pulse test.wav

OBEX

Pair the Phone/PC device

$ bluetoothctl
[bluetooth]# power on
[bluetooth]# pairable on
[bluetooth]# scan on
Now, Copy the MAC Address of your PC
[bluetooth]# scan off
[bluetooth]# pair <mac address>
[bluetooth]# trust <mac address>
[bluetooth]# quit

Run the OBEXD dameon and connect to the target bluetooth device

export $(dbus-launch)
/usr/libexec/bluetooth/obexd -r /home/root -a -d & obexctl
[obex]# connect <mac address of PC>
[obex]#

Transfer file to PC/phone

[obex]# send /home/root/hello.mp3

Transfer file from PC/phone to MaaXBoard

Just use the PC/Phone tools to send.

Note: Current have issues in Transfering file from PC/phone to MaaXBoard

MutiMedias

Audio Play

gst-play-1.0 ./hello.mp3

Record Video

# /dev/video1 is a usb camera
gst-launch-1.0 -e v4l2src device=/dev/video1 num-buffers=100 ! video/x-raw,format=YUY2,framerate=30/1, width=640, height=480 ! videoconvert ! x264enc ! video/x-h264, profile=baseline ! mp4mux ! filesink location=output.mp4