Difference between revisions of "Rockpi4/Ubuntu"

Revision as of 06:31, 8 January 2019

Work with ROCKPI 4 Ubuntu Server

Introduction to ROCKPI 4 Ubuntu

The Ubuntu server image for ROCK Pi 4 target for minimal, fast and customization.

Default username/password

   default username: rock
   default password: rock

rock is sudo user and switch to root can be done with the following command as user rock:

   sudo su

OpenCV

There are two ways to get OpenCV. One is building OpenCV by yourself (Option one) and the other is installing libopencv package (Option two).

Option 1: Manually build

Build OpenCV by yourself. See Install OpenCV.

Option 2: Install pre-built binaries

Install Ubuntu desktop

To use OpenCV, an OS desktop is necessary. If your ROCK Pi 4 is running Ubuntu but without desktop, you can install Ubuntu mate desktop.

   $ sudo apt install ubuntu-mate-core && sudo apt install ubuntu-mate-desktop

Install all the recommended packages

Required:

   $ sudo apt-get update && sudo apt-get upgrade
   $ sudo apt-get install build-essential
   $ sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

Recommended optional packages:

   $ sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-22-dev
   $ sudo apt install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libavresample-dev
   $ sudo apt install tesseract-ocr cmake-data liblept5

Install OpenCV package:

   $ sudo apt-get install libopencv

Step 3: Test OpenCV

To check the version of your installed OpenCV, try this:

   rock@linux:~$ python
   Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15) 
   [GCC 7.3.0] on linux2
   Type "help", "copyright", "credits" or "license" for more information.
   >>> import cv2
   >>> cv2.__version__
   '4.0.1'
   >>>

Obtain OpenCV sample:

   $ cd ~
   $ wget -O opencv.zip https://github.com/opencv/opencv/archive/4.0.1.zip
   $ unzip opencv.zip
   
   $ cd ~/opencv-4.0.1/samples/python
   $ python watershed.py

Changelogs

2019.01.04

rockpi4b-ubuntu-bionic-minimal-20190104_2101-gpt.img.gz

• Add radxa apt repository in the release image
• Rockchip hardware overylay are now managed by deb package
• New DRM hotplug management script fix screen resolution change issue
• Kernel version updated to linux-4.4.154-59-rockchip-g5e70f14
  • Kernel modules support AppArmor, Docker, WireGuard and UFW
  • Support USB gadget network, see USB Net
  • Support TP-Link UE300 ethernet adapter
  • A lot of kernel features are enabled as modules
• Uboot version updated to 2017.09-02085-g5a6aeld
  • Support kernel boot menu selection(serial console only)
  • Support device tree directory boot
  • Support manually flash uboot in running system
• Fix ethernet is not managed by Network Manager issue
• Kernel package installation automatically adds to the boot menu