Difference between revisions of "Rock3/Ubuntu"

Revision as of 06:59, 10 September 2021

    ROCK 3 >  Ubuntu

Work with ROCK 3 Ubuntu

Introduction to ROCK 3 Ubuntu

ROCK 3 Ubuntu server is an easy to use system. While working with ROCK 3 Ubuntu Server, you will find it do well on playing music, Internet, Bluetooth, AI and so on.

ROCK 3 Ubuntu server uses systemd to manage system.

Command prepended by $ means the command may be executed by an unprivileged user. And command prepended by # means the command may be executed by an privileged user. But the symbol, $ or #, is not part of the command.

Access from the Host PC/Laptop

Option 1: Serial console

Check Serial Console

Option 2: SSH

SSH server is enabled on port 22 of ROCK 3 default image.

Please use angryip to find your board IP address.

$ ping ip-of-device
$ ssh rock@ip-of-device

Debian Default User Account

Non-root User:

User Name : rock
Password  : rock

Install and update necessary packages

Add Radxa APT, see Radxa APT.

Install packages;

$ sudo apt-get update
$ sudo apt-get install -y rockchip-overlay
$ sudo apt-get install -y linux-4.4-rock-3-latest

Network Connection

There are two methods for network connection. One is Ethernet and the other is WIFI.

Ethernet Connection

You can use a network cable (one end connected to the external network port or route) to connect your ROCK 3 to the network. The ROCK 3 will automatically configure the network for your surfing on the Internet.

To test the Ethernet, we need to follow the steps:

• Switch to super user mode by command

$ sudo su

• Check whether the Ethernet is normal by command, ifconfig, which would show us a network card, eth0, and the Ethernet IP address. Also, use tool, ping, to connect to a normal domain.

$ ifconfig
$ ping www.baidu.com

• If failed to connect to a normal domain, try

$ sudo dhclient eth0

WIFI Connection

When there is not a network cable for your ROCK 3 the WIFI connection is another good choice. ROCK 3 supports 2.4G/5G WIFI and Wi-Fi 6 wireless network.

To test the WIFI performance, we need to follow the steps:

• Switch to super user mode

$ sudo su

• Open the WIFI

$ nmcli r wifi on

• Scan WIFI

$ nmcli dev wifi

• Connect to WIFI network

$ nmcli dev wifi connect "wifi_name" password "wifi_password"

• Test WIFI perpormance by tool iperf.

Check DDR size

• ROCK 3 has several different DDR sizes, such as 2G, 4G, 8G.

rock@rock3a:~$ free -h
             total        used        free      shared  buff/cache   available
Mem:          7.4Gi        85Mi       7.2Gi       8.0Mi       168Mi       7.2Gi
Swap:            0B          0B          0B

• For example, the size of DDR on this board is 8G.

Storage device

• eMMC: /dev/mmcblk0
• uSD Card: /dev/mmcblk1
• NVME M.2 SDD: /dev/nvme0n1

Test RTC Device

• First, plug in RTC battery and power on.Check the rtc device:

rock@rock3a:~$ dmesg | grep rtc
[    0.878676] rk808-rtc rk808-rtc: registered as rtc0
[    0.880447] rk808-rtc rk808-rtc: setting system clock to 2017-08-04 09:00:04 UTC (1501837204)

• Second, use the follow commands to set the system time and synchronization to the rtc clock.

$ date -s "2021-08-17 20:03:00"
$ hwclock -w
$ hwclock -r
root@rock3a:~# hwclock -r
2021-08-17 20:00:04.745124+00:00 
$ poweroff

• and then disconnect the power supply
• Third, back to power after 10 mins and check whether the rtc clock run the same time

$ hwclock -r
root@rock3a:~# hwclock -r
2021-08-17 20:10:14.745124+00:00

Changelogs

2021.08.24

rock3a_ubuntu_focal_server_arm64_20210823_2119-gpt.img

• Kernel version: 4.19.193-2-rockchip-g7cf7399ddb5c
• U-Boot version: 2017.09-gbd2fa07970e-210525