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Introduction

The following quick start guide provides background information about the HummingBoard RZ/G2LC.

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

Date

Owner

Revision

Notes

Yazan Shhady 

1.0

Initial release

Yazan Shhady 

1.1

Updated SW Versions

May 15, 2023

Yazan Shhady 

1.2

Updated SD SW Versions

Table of Contents

Hardware Setup

Product specifications

HUMMINGBOARD RZ/G2LC

I/Os

2 x USB 3.0

1 x MIPI-CSI

Networking

1 x Ethernet RJ45 10/100
1 x 802.11 a/b/g/n/ac WiFi and Bluetooth (2.4 GHz)

Processor

Renesas RZ/G2LC Dual core Arm Cortex A55 up to 1.2GHz + Cortex M33

Memory & Storage

Up to 2GB DDR4
8GB eMMC
MicroSD

Display

micro HDMI

Misc.

1 x Reset button
1 x Configurable push button
3 x LED indicators
RTC

Development and Debug interfaces

Micro USB

Power

7V – 36V

Expansion card I/Os

mikroBUS header
Mini Pcie with SIM holder

Temperature

Commercial: 0°C to 70°C
Industrial: -40°C to 85°C

Dimensions

PCBA: 100 x 70mm
Enclosure: 120 x 80 x 30mm

Enclosure

Extruded aluminium

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Supported with RZ/G2LC SOM. For more detailed information about our SOM-RZ/G2LC series please visit this user manual : RZ/G2LC SOM Hardware User Manual .

Block Diagram

The following figure describes the RZ/G2LC Block Diagram.

Visual features overview

Please see below the features overview of the connector side of the HummingBoard RZ/G2LC

Print side connector overview of the HummingBoard RZ/G2LC.

Software Setup

Cable setup and prerequisites

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

  • Linux or Windows PC

  • HummingBoard Ripple with RZ/G2LC SOM (HummingBoard RZ/G2LC)

  • 12V Power adapter (HummingBoard Ripple has wide range input of 7V-36V, it is recommended to use 12V power adapter).

  • Micro USB to USB for console, the HummingBoard Ripple has an onboard FTDI chip.

  • IP router or IP switch

  • USB Disk and SD Card

Boot Select

Before powering up the board for the first time it is recommended to select the boot media. In order to configure the boot media, please refer to HummingBoard RZ/G2LC Boot Select .

eMMC and SD connect to the same SDIO signals via MUX so we can’t have access to the SD & eMMC at the same time, select eMMC/SD by setting switch S3{6} → off : eMMC , on : SD

Generating Yocto, Buildroot and Debian image

Yocto

  1. Clone the repository from the “List of supported OS” link and move your terminal to this directory.

  2. Download the layers by this command 

    $ repo init -u https://github.com/SolidRun/meta-solidrun-arm-rzg2lc.git -b dunfell -m meta-solidrun-arm-rzg2lc.xml
$ repo sync

  3. In this stage you can modify your image configs as you want, you can find more info about it the the repository.

  4. For graphics support you need to explore in the readme file in the github and follow the instructions of this utility.

  5. Set the environment of the image that going to be build by this command

    $ TEMPLATECONF=$PWD/meta-solidrun-arm-rzg2lc/docs/template/conf/rzg2lc-solidrun source poky/oe-init-build-env build

  6. Build your own Yocto image by this command

    $ MACHINE=rzg2lc-hummingboard bitbake <target>

    • NOTE: Choose your relevant target, for example:
      -core-image-bsp: cli image.
      -core-image-weston: graphical image.
      -core-image-qt: graphical image including qt.

Buildroot/Debian

  1. Clone the repository from the “List of supported OS” link and move your terminal to this directory.

  2. In this stage you can modify your image configs as you want, you can find more info about it the the repository.

  3. Build your own image by this command

    $ MACHINE=rzg2lc-hummingboard Distro=<Buildroot/Debian> ./runme.sh

Booting from SD card

The following shows how to set the switches on the boot source selector:

Please Note:

The black rectangle represents the switch position.

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

  1. Downloading the image
    Download the image (for example Debian) 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/rzg2lc-solidrun-sd-emmc-debian-f22483f.img.xz

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

    xz -dc rzg2lc-solidrun-sd-emmc-debian-f22483f.img.xz | dd of=/dev/sdX bs=4k conv=fdatasync

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

    • Note: Plug a micro SD into your Linux PC, the following assumes that the USB-Disk / Micro-SD is added as /dev/sdX and all it’s partitions are unmounted.

    • Note: You can use the following command for writing to the SD in case you generated your own image:

      $ sudo dd if=/your/image/path of=/dev/sdX bs=4k conv=fdatasync

  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. Power On
    Hold on the On/Off Power button - SW1 (as shown in the figure below)

    • Note: The system should turn on by default when the power is connected (without pressing the button).

  6. 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:

  • Enter “root” in the login like the above example and then you can move on to use the device.

Final stages

The following stages need to be done in order to finalise the imaging:

  1. Run fdisk /dev/mmcblk0 if using SD or eMMC.

  2. Recreate the rootfs partition (mostly the second partition) by deleting it and then creating a new partition that starts at the next sector after the first one and extends to the end of the drive (or less depending on your needs).

  3. Write the new partition, when prompt about ‘Do you want to remove the signature?’ then answer with Yes.

  4. Run resize2fs /dev/mmcblk0p2 if using SD Card or eMMC.

  5. In this stage the root partition should be big enough to start populating it; but first update the RTC clock.

  6. Connect the RJ45 to your network with internet access (and DHCP server); and then run dhclient.

  7. Update the RTC clock by running ntpdate pool.ntp.org and then hwclock -w.

  8. Run apt-update commands below and then populate the root filesystem as you wish.

$ apt-get update && apt-get upgrade -y

Here is an example of the process until the 3rd step (include):

After those steps you should end the process in this way (step 4 to the end):

In the end you should see with “lsblk” that the partition size is in the required size.

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
WiFi

An example for connecting to WiFi using wpa_supplicant:

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

$ ifconfig wlan0 up

To discover your wireless network interface name, see Network Interfaces.

  1. Install the wpa_supplicant package:

$ apt-get install wpasupplicant

  1. 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

  1. 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

Check your personal ssids by running : ‘iw dev wlan0 scan’

  1. Make sure it works:

Restart your device and it should connect to the wireless network. You can check it by running the command $ iwconfig . If it doesn't, repeat above steps or get help from an adult.

Bluetooth

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

$ apt-get install bluez
$ bluetoothctl

  1. Turn the device on:

[bluetooth]# power on

  1. Make your Bluetooth detectable by other devices:

[bluetooth]# discoverable on

  1. If you want to connect to other devices:

  • Start by scanning for other Bluetooth devices:

[bluetooth]# scan on

  • Choose a MAC address and connect :

[bluetooth]# pair $MAC

  • You can check the pairing list between the devices by writing :

[bluetooth]# paired-devices

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.

  • How to connect to the network:
    1. Install “modemmanager” package on your debian.

     $ sudo apt install modemmanager

    2. Search for your modem location:

    $ mmcli -L

    3. Connect to your modem:

    $ mmcli --modem=/your/modem/location

    4. Enable the modem:

    $ mmcli --modem=/your/modem/location -e

    5. Scan for networks:

    $ mmcli --modem=/your/modem/location --3gpp-scan

    6. connect to 3gpp network:

    $ mmcli --modem=/your/modem/location --3gpp-register-in-operator=<network ID>

    7. Make sure the connection was created:

    $ mmcli --modem=/your/modem/location

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

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. Set the XDG_RUNTIME_DIR env param.

    cat << 'EOF' > /etc/profile.d/weston.sh
if test -z "$XDG_RUNTIME_DIR"; then
    export XDG_RUNTIME_DIR=/run/user/`id -u`
    if ! test -d "${XDG_RUNTIME_DIR}"; then
        # Make a directory for the output of the Weston GUI
        mkdir --parents "${XDG_RUNTIME_DIR}"
        chmod 0700 "${XDG_RUNTIME_DIR}"
    fi
fi
EOF

  3. Restart the system

    reboot

  4. Start Weston (must be run from the Dissplay Terminal)

    weston

Run the weston command from the Dissplay Terminal using keyboard (PHYSICAL TERMINAL not serial session or remote connection)

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.

List Of Supported OS

OS

 

 Debian

 RZ/G2LC Yocto

Buildroot

Build from source

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