ODROID-XU4

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• 公式ページ&note{odroid-xu4-harkernel-official:ODROID | Hardkernel, 2018-03-30閲覧};
• スペック(抜粋)

  SoC	Samsung Exynos5422
  CPU	Cortex-A15 Quad Core 2.0Ghz + Cortex-A7 Quad Core 1.4GHz
  Memory	2GB LP-DDR3
  GPU	Mali-T628 MP6

スペック†

Samsung Exynos5422†

• CPU:Cortex-A15x4 + Cortex-A7x4
• architecture:Arm v7-A
• cpuinfo

  $ cat /proc/cpuinfo
  processor       : 0
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 84.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x0
  CPU part        : 0xc07
  CPU revision    : 3
  
  processor       : 1
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 84.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x0
  CPU part        : 0xc07
  CPU revision    : 3
  
  processor       : 2
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 84.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x0
  CPU part        : 0xc07
  CPU revision    : 3
  
  processor       : 3
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 84.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x0
  CPU part        : 0xc07
  CPU revision    : 3
  
  processor       : 4
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 120.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x2
  CPU part        : 0xc0f
  CPU revision    : 3
  
  processor       : 5
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 120.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x2
  CPU part        : 0xc0f
  CPU revision    : 3
  
  processor       : 6
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 120.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x2
  CPU part        : 0xc0f
  CPU revision    : 3
  
  processor       : 7
  model name      : ARMv7 Processor rev 3 (v7l)
  BogoMIPS        : 120.00
  Features        : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae
  CPU implementer : 0x41
  CPU architecture: 7
  CPU variant     : 0x2
  CPU part        : 0xc0f
  CPU revision    : 3
  
  Hardware        : ODROID-XU4
  Revision        : 0100
  Serial          : 0000000000000000

• auxv

  odroid@odroid:~$ xxd -e -g4  /proc/self/auxv
  00000000: 00000021 beb20000 00000010 001fb0d6  !...............
  00000010: 00000006 00001000 00000011 00000064  ............d...
  00000020: 00000003 0048a034 00000004 00000020  ....4.H..... ...
  00000030: 00000005 00000009 00000007 b6fd4000  .............@..
  00000040: 00000008 00000000 00000009 0048bb11  ..............H.
  00000050: 0000000b 000003e8 0000000c 000003e8  ................
  00000060: 0000000d 000003e8 0000000e 000003e8  ................
  00000070: 00000017 00000000 00000019 be846dd7  .............m..
  00000080: 0000001a 00000000 0000001f be846fef  .............o..
  00000090: 0000000f be846de7 00000000 00000000  .....m..........
  -
  00000021 beb20000
  00000010 001fb0d6
  00000006 00001000
  00000011 00000064
  00000003 0048a034
  00000004 00000020
  00000005 00000009
  00000007 b6fd4000
  00000008 00000000
  00000009 0048bb11
  0000000b 000003e8
  0000000c 000003e8
  0000000d 000003e8
  0000000e 000003e8
  00000017 00000000
  00000019 be846dd7
  0000001a 00000000
  0000001f be846fef
  0000000f be846de7
  00000000 00000000

• lscpu

  $ lscpu
  Architecture:          armv7l
  Byte Order:            Little Endian
  CPU(s):                8
  On-line CPU(s) list:   0-7
  Thread(s) per core:    1
  Core(s) per socket:    4
  Socket(s):             2
  Model name:            ARMv7 Processor rev 3 (v7l)
  CPU max MHz:           1400.0000
  CPU min MHz:           200.0000
  Hypervisor vendor:     (null)
  Virtualization type:   full

• OS

  $ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 16.04.3 LTS
  Release:        16.04
  Codename:       xenial
  $ cat /etc/os-release
  NAME="Ubuntu"
  VERSION="16.04.3 LTS (Xenial Xerus)"
  ID=ubuntu
  ID_LIKE=debian
  PRETTY_NAME="Ubuntu 16.04.3 LTS"
  VERSION_ID="16.04"
  HOME_URL="http://www.ubuntu.com/"
  SUPPORT_URL="http://help.ubuntu.com/"
  BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
  VERSION_CODENAME=xenial
  UBUNTU_CODENAME=xenial

• cpufreq

  $ cat /sys/bus/cpu/devices/cpu*/cpufreq/cpuinfo_max_freq
  1400000
  1400000
  1400000
  1400000
  2000000
  2000000
  2000000
  2000000

• gcc

  $ gcc --version
  gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.5) 5.4.0 20160609
  Copyright (C) 2015 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

• ODROID-XU4
• UART Debug console
  • accessory:development:usb_uart_kit [ODROID Wiki]&note{ref-debug-uart:accessory:development:usb_uart_kit [ODROID Wiki]};
  • 1.8V
  • 115200 8N1
  • Raspberry Pi みたいにGPIOピンと共用ではないので注意が必要

セットアップ†

OS†

• 公式のUbuntuのイメージを利用
• アカウントはodroid

アップデート†

• だいたい20分ぐらい

  $ time sudo apt-get update && time sudo apt-get upgrade
  
  real    22m30.161s
  user    3m8.099s
  sys     2m36.277s

タイムゾーンのアップデート†

• dpkg-reconfigureを使う

  $ sudo dpkg-reconfigure tzdata

パッケージのインストール†

• もろもろ入れる

  $ time sudo apt-get install ssh cmake git build-essential vim libgtk-3-dev openjdk-8-jre-headless libavcodec-dev libavformat-dev libswscale-dev libswresample-dev libavutil-dev libavresample-dev ccache strace
  
  real    0m49.074s
  user    0m16.913s
  sys     0m13.683s

Gitのコンフィグ†

• 忘れないうちに

  $ git config --global user.name "Tomoaki Teshima"
  $ git config --global user.email tomoaki.teshima@gmail.com
  $ git config --global push.default simple

SSH鍵†

• JenkinsとGithub用に

  $ ssh-keygen -t ecdsa
  $ ssh-keygen -f hoge
  $ cat hoge.pub >> .ssh/authorized_keys

OpenCVのclone†

• OpenCVとOpenCV のデータセット

  $ time git clone git@github.com:tomoaki0705/opencv.git opencv-fork && pushd opencv-fork && git remote add upstream git@github.com:opencv/opencv.git && popd && time git clone git@github.com:opencv/opencv_extra.git

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