HummingBoard IIOT & RZ/G2L SOM Quick Start Guide

Introduction

The following quick start guide provides background information about the HummingBoard IIOT.

The guide will give a technical overview about the product and by the end of it you should be able to boot an operating system and begin testing your application.

Revision and Notes

Hardware Setup

Product specifications

Block Diagram

The following figure describes the RZ/G2L Block Diagram.

Visual features overview

Please see below the features overview of the connector side of the HummingBoard IIOT & RZ/G2L SOM.

Print side connector overview of the HummingBoard IIOT & RZ/G2L SOM.

Software Setup

Cable setup and prerequisites

Here is what you will need to power up and use the board:

• Linux or Windows PC

• HummingBoard IIOT with SOM

• 12V Power adapter (HummingBoard IIOT has wide range input of 7V-28V), alternatively you can use a PoE injector to power on the device.

• Type-C to USB for console, the HummingBoard IIOT has an onboard FTDI chip.

• IP router or IP switch

Boot Select

Before powering up the board for the first time it is recommended to select the boot media using onboard DIP switch S5:

Booting from SD card

Boot Select

Here is the correct DIP switch position for SD boot:

Once you set the switches, you can apply the following for booting from an SD card.

1. Downloading the Debian image

Download the Debian image by running the following command on your Linux/Windows PC:

wget https://solid-run-images.sos-de-fra-1.exo.io/RZ/Debian/build_date_20240529-git_rev_f22483f/rzg2l-solidrun-sd-debian-f22483f.img.xz

• For more Debian releases, please visit Debian Releases for RZ/G2L.

2. Writing the image to the SD card

Use the following commands for writing the image to an SD card:

xz -dc rzg2l-solidrun-sd-debian-f22483f.img.xz | dd of=/dev/sdX bs=4k conv=fdatasync 

• For more information, please visit Flashing an SD Card .

3. SD card insertion

Please Insert the SD card into your device.

4. Power connection

Connect your power adaptor to the DC jack, and then connect the adaptor to mains supply.

5. Serial Connection

Please insert the micro USB into your device, then you can refer to Serial Connection for installing necessary serial connection software in Linux/Windows.

Once you installed the necessary serial connection software, you should be able to see the following:

• In order to be able to log in , please insert “root” as a username and password as follows:

More Features

Internet

Connect an Ethernet cable to your HummingBoard Pulse (for internet access during boot-up).
Models HummingBoard with WiFi, can be connected via WiFi or wired Ethernet.

• Please check you Ethernet connection.

• Use the following commands in order to keep your system up-to-date:

apt-get update 
apt-get upgrade 
reboot

• For more detailed information, please refer to i.MX8M Debian .

WiFi

• You can connect to WiFi using any application, such as : connmanctl or wpa_spplicant.

An example for connecting to WiFi using wpa_supplicant:

1. To bring a WiFi interface up, run the following :

ifconfig wlan0 up 

2. Install the wpa_supplicant package:

apt-get install wpasupplicant 

3. Edit network interfaces file :

At the bottom of the file, add the following lines to allow wlan as a network connection:

cat <<EOF > /etc/network/interfaces.d/wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

EOF

4. Create a configuration file with the relevant ssid:

cat <<EOF > /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=/run/wpa_supplicant
update_config=1

network={
    ssid="MYSSID"
    psk="passphrase" 
}

EOF

5. Make sure it works:

Restart your device and it should connect to the wireless network. If it doesn't, repeat above steps or get help from an adult.

• For more information about using wpa_supplicant , you can refer to wpa_supplicant or wpa_supplicant.

Bluetooth

1. For showing all Bluetooth devices, run the following:

apt-get install bluez
hciconfig -a

2. Choose a device, and turn it on:

 hciconfig hci0 up

3. Set up the Bluetooth name:

hciconfig hci0 name 'SolidRun_Ble'

4. Make your Bluetooth detectable by other devices:

hciconfig hci0 piscan

5. If you want to connect to other devices:

• Start by scanning for other Bluetooth devices:

hcitool scan

• Choose a MAC address and connect :

rfcomm connect 0  $MAC 10 & 

• You can check the communication between the devices by writing :

l2ping -c 4  $MAC

Cellular Modem

The cellular modem is a more fully featured extension of which contains a cellular module with additional hardware interfaces and a SIM card slot.

You can connect your cellular modem to the mPCIe, and insert a SIM card.

• For some cellular modules to be connected, please refer to Cellular Modules .

SPI

For testing you serial peripheral interface - SPI, please see this documentation SPI from Linux with spidev.

GUI On Debian

There is an option with the Debian image, up to the user, to work with a GUI like Weston, GNOME and etc.
For applying this option do the following steps:

First, connect your device to a screen using the working output (HDMI / uHDMI).

For working with Weston GUI:

1. Install the Weston package.

   $ sudo apt install weston

2. Make a directory for the output of the Weston GUI.

   $ mkdir /your/directory/location

3. Give permissions to this directory.

    $ chmod 0700 /your/directory/location

4. Set the XDG_RUNTIME_DIR env param to your directory.

   $ export XDG_RUNTIME_DIR=/your/directory/location

5. Run Weston.

   $ weston

    

For working with GNOME GUI on top of Xorg:

1. Install Xorg.

   $ sudo apt install xorg

2. Install your desired gnome.

   $ sudo apt install gnome-session

   NOTE: ‘gnome-session’ is an example of gnome that we can work with, you can replace the ‘session' with another GNOME extention.

3. Start your GNOME GUI.

   $ sudo systemctl start gdm

   • For logging in you need a user on your device to log into it. You can create one before step 3 by this command (replace the ‘username’ with name that you want) :

   $ sudo adduser username

   • You can jump between GUIs that you install (like gnome-session) by the setting button that locates in the down right corner of the home screen.

TLV EEPROM Support

RZ/G2L SoMs are being programmed with identifying information such as the product name, MAC Address and SKUs to allow for programmatic identification of hardware.

List Of Supported OS

OS
	Debian
	RZ/G2L Yocto
	Buildroot

Build from source

• https://github.com/SolidRun/build_rzg2lc

Documentation

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