Debian

First Steps

Debian GNU/Linux 8 chip ttyGS0
chip login: chip
Password: chip
Last login: Thu Jan  1 00:01:27 UTC 1970 on ttyGS0
Linux chip 4.2.0-rc1 #1 SMP Tue Nov 3 07:09:51 UTC 2015 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
chip@chip:~$ su
Password: chip
root@chip:/home/chip# cd
root@chip:~# uname -a
Linux chip 4.2.0-rc1 #1 SMP Wed Oct 21 20:43:17 UTC 2015 armv7l GNU/Linux
root@chip:~# date -s "10/25/2015 18:41:30"
root@chip:~# apt-get update
root@chip:~# apt-get upgrade
root@chip:~# dpkg-reconfigure tzdata # TimeZone
root@chip:~# apt-get install wget htop git
root@chip:~# apt-get install -f
root@chip:~# hwtest

############################################################
# [ CHIP HW TEST ]                                         #
############################################################

# Turn on wlan0...OK
# Turn on wlan1...OK
# Hardware list...OK      
# I2C bus 0...OK
# I2C bus 1...OK
# I2C bus 2...OK
# testing AXP209 on I2C bus 0...OK
# GPIO expander test...OK
# Doing 10s stress test...OK
# Wifi enumeration test...OK
### ALL TESTS PASSED ###

root@chip:~# df -h
Filesystem      Size  Used Avail Use% Mounted on
ubi0:rootfs     3.6G  563M  3.1G  16% /
devtmpfs        245M     0  245M   0% /dev
tmpfs           246M     0  246M   0% /dev/shm
tmpfs           246M  6.6M  239M   3% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           246M     0  246M   0% /sys/fs/cgroup
tmpfs            50M     0   50M   0% /run/user/0
root@chip:~# cat /proc/cpuinfo
processor    : 0
model name    : ARMv7 Processor rev 2 (v7l)
BogoMIPS    : 1001.88
Hardware    : Allwinner sun4i/sun5i Families
root@chip:~# cat /proc/meminfo | head
MemTotal:         501884 kB
MemFree:          129604 kB
MemAvailable:     431712 kB
Buffers:               0 kB
root@chip:~# htop
Mem: 34452K used, 468024K free, 88K shrd, 0K buff, 8148K cached
CPU:   0% usr   0% sys   0% nic  99% idle   0% io   0% irq   0% sirq
Load average: 0.00 0.01 0.05 1/48 179
  PID  PPID USER     STAT   VSZ %VSZ %CPU COMMAND
  179   163 root     R     2092   0%   0% top
  120     1 root     S     5944   1%   0% /usr/sbin/connmand -n
  121     1 root     S     5748   1%   0% /usr/sbin/wpa_supplicant -u
  138     1 root     S     4348   1%   0% /usr/sbin/sshd
  162     1 root     S     3676   1%   0% /usr/libexec/bluetooth/bluetoothd
  101     1 dbus     S     2232   0%   0% dbus-daemon --system
  163     1 root     S     2092   0%   0% -sh
  164     1 root     S     1992   0%   0% /sbin/getty -L tty0 115200 vt100
  161     1 root     S     1992   0%   0% /sbin/getty -L ttyS0 115200 vt100
    1     0 root     S     1988   0%   0% init
   83     1 root     S     1988   0%   0% /sbin/syslogd -n
   85     1 root     S     1988   0%   0% /sbin/klogd -n
  156     1 root     S     1408   0%   0% /sbin/rtk_hciattach -n -s 115200 /dev/
   66     2 root     SW       0   0%   0% [kworker/u2:4]
   20     2 root     SW       0   0%   0% [kworker/0:1]
   12     2 root     SW       0   0%   0% [kdevtmpfs]
   70     2 root     SW       0   0%   0% [ubi_bgt0d]
    7     2 root     SW       0   0%   0% [rcu_sched]
   18     2 root     SW<      0   0%   0% [bioset]
   21     2 root     SW       0   0%   0% [kswapd0]

Secure Shell

root@chip:~# apt-get install openssh-server openssh-client

WiFi

root@chip:~# nmcli device wifi list
*  SSID             MODE   CHAN  RATE       SIGNAL  BARS  SECURITY  
   INFINITUMfjph    Infra  1     54 Mbit/s  62      ▂___  WPA1 WPA2 
   INFINITUM8240C7  Infra  11    54 Mbit/s  55      ▂▄__  WPA1 WPA2 
   17057Abril       Infra  6     54 Mbit/s  50      ▂▄__  WPA1 WPA2 
   INFINITUMndjj    Infra  2     54 Mbit/s  47      ▂▄__  WPA1 WPA2 
   INFINITUMf89t    Infra  9     54 Mbit/s  47      ▂▄__  WPA1 WPA2 
   INFINITUM6d6f    Infra  4     54 Mbit/s  30      ▂___  WPA1 WPA2 
   --               Infra  1     54 Mbit/s  72      ▂▄▆_  --        
   INFINITUME75B40  Infra  6     54 Mbit/s  29      ▂___  WPA1 WPA2 

*  SSID             MODE   CHAN  RATE       SIGNAL  BARS  SECURITY  
   INFINITUMfjph    Infra  1     54 Mbit/s  62      ▂___  WPA1 WPA2 
   INFINITUM8240C7  Infra  11    54 Mbit/s  55      ▂▄__  WPA1 WPA2 
   17057Abril       Infra  6     54 Mbit/s  50      ▂▄__  WPA1 WPA2 
   INFINITUMndjj    Infra  2     54 Mbit/s  47      ▂▄__  WPA1 WPA2 
   INFINITUMf89t    Infra  9     54 Mbit/s  47      ▂▄__  WPA1 WPA2 
   INFINITUM6d6f    Infra  4     54 Mbit/s  17      ▂___  WPA1 WPA2 
   --               Infra  1     54 Mbit/s  72      ▂▄▆_  --        
   INFINITUME75B40  Infra  6     54 Mbit/s  29      ▂___  WPA1 WPA2 
root@chip:~# nmcli device wifi connect INFINITUMf password 1c28 ifname wlan0
root@chip:~# nmcli device wifi connect INFINITUMf ifname wlan0
Connection with UUID '...5d288d5d...' created and activated on device 'wlan0'
root@chip:~# nmcli device status
DEVICE   TYPE      STATE         CONNECTION    
wlan0    wifi      connected     -- 
wlan1    wifi      disconnected  --            
ip6tnl0  ip6tnl    unmanaged     --            
lo       loopback  unmanaged     --            
sit0     sit       unmanaged     --            
root@chip:~# nmcli connection show --active
NAME           UUID                                  TYPE             DEVICE 
--             dbdf4061-9b7f-4dc2-82aa-5d288d5d15f0  802-11-wireless  wlan0  
root@chip:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=2 ttl=57 time=23.6 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 1 received, 50% packet loss, time 1003ms
rtt min/avg/max/mdev = 23.637/23.637/23.637/0.000 ms

• Installing Zero Configuration Networking

Audio

sunxi-codec as hardware

root@chip:~# apt-get install libasound2 alsa-utils mplayer2
root@chip:~# alsamixer
root@chip:~# apt-get install portaudio19-dev
root@chip:~# apt-get install swig
root@chip:~# apt-get install python-setuptools
root@chip:~# apt-get install python-dev
root@chip:~# aplay -lL
...
**** List of PLAYBACK Hardware Devices ****
card 0: sunxicodec [sunxi-codec], device 0: CDC PCM Codec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
root@chip:~# arecord -lL
...
**** List of CAPTURE Hardware Devices ****
card 0: sunxicodec [sunxi-codec], device 0: CDC PCM Codec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

root@chip:~# cat /proc/asound/cards
 0 [sunxicodec     ]: sunxi-codec - sunxi-codec
                      sunxi-codec
root@chip:~# arecord -f cd -D plughw:0,0 -d 20 test.wav
Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
^CAborted by signal Interrupt...
root@chip:~# aplay -D hw:0,0 test.wav
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

Testing

    chip@chip:~$ wget -O test.wav https://upload.wikimedia.org/wikipedia/commons/d/db/Descending_thirds.wav
    chip@chip:~$ wget -O test.ogg https://upload.wikimedia.org/wikipedia/commons/e/e7/Agogo.ogg
    chip@chip:~$ mplayer test.ogg
    chip@chip:~$ wget -O test.mp3 http://www.freesound.org/data/previews/315/315618_2050105-lq.mp3
    chip@chip:~$ mplayer test.mp3

• Next Thing Co. Sound Output on Debian

Virtual Network Computing

In computing, Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the Remote Frame Buffer protocol (RFB) to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a network. Wikipedia

VNC Server @ CHIP X Desktop

    root@chip:~# apt-get install xfce4
    root@chip:~# apt-get install vnc4server
    chip@chip:~$ vnc4passwd 
    Password:
    Verify:
    chip@chip:~$ vnc4server -geometry 800x600 -depth 24
    xauth:  file /home/chip/.Xauthority does not exist
    xauth: (stdin):1:  bad display name "chip:1" in "add" command

    New 'chip:1 (chip)' desktop is chip:1

    Creating default startup script /home/chip/.vnc/xstartup
    Starting applications specified in /home/chip/.vnc/xstartup
    Log file is /home/chip/.vnc/chip:1.log

VNC Server @ CHIP Default Desktop

    chip@chip:~$ vnc4server -kill :1
    Killing Xvnc4 process ID 18807
    chip@chip:~$ nano ~/.vnc/xstartup                         
    #!/bin/sh
    # Uncomment the following two lines for normal desktop:
    unset SESSION_MANAGER 
    exec /etc/X11/xinit/xinitrc 
    ...
    chip@chip:~$ vnc4server -geometry 800x600 -depth 24
    xauth: (stdin):1:  bad display name "chip:1" in "add" command

    New 'chip:1 (chip)' desktop is chip:1

    Starting applications specified in /home/chip/.vnc/xstartup
    Log file is /home/chip/.vnc/chip:1.log

VNC Viewer @ Host

    root@jessie:/home/xe1gyq# apt-get install xvnc4viewer
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    xvnc4viewer is already the newest version.
    0 upgraded, 0 newly installed, 0 to remove and 109 not upgraded.
    root@jessie:/home/xe1gyq# exit
    exit
    xe1gyq@jessie:~$ xvnc4viewer 192.168.1.77:1

My Stuff

root@chip:~# apt-get update
root@chip:~# apt-get install git
chip@chip:~$ git clone https://github.com/xe1gyq/Intel.IoT.Roadshow.git
chip@chip:~$ cd Intel.IoT.Roadshow/2015
chip@chip:~/Intel.IoT.Roadshow$ git clone https://github.com/xe1gyq/core.git
root@chip:/home/chip/Intel.IoT.Roadshow/2015# apt-get install python-pip
root@chip:/home/chip/Intel.IoT.Roadshow/2015# pip install plotly
chip@chip:~/Intel.IoT.Roadshow/2015$ python core/xplotly.py

Software Define Radio

root@chip:~# apt-get update
root@chip:~# apt-get install gnuradio gnuradio-dev
root@chip:~# apt-get install rtl-sdr gr-osmosdr