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====== Cb2 ======

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//__About this Article__//
  * **Author**: aaron --- aaron@cubietech.com --- 2014/08/19 18:00
  * **Copyrights**: [[http://creativecommons.org/licenses/by-sa/3.0/|CC Attribution-Share Alike 3.0 Unported]]
  * **Contributors**: [[http://cubieboard.org/|Cubieboard Community]] : ...
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======= Abstract =======


======= Hardware =======
{{:tutorials:cb2-2cards:205717m3apxxbv8k36aobx.png?600|}}
======= Software =======
====== Cubieez ======
{{:tutorials:cb2-2cards:cubieez-0814.png?600|}}
===== Abstract =====
Cubieez is based on Debian, which rootfs is created by drkbcn from cubieforums.
  * Performance CPU governor
  * Kernel 3.4.79 with ARMHF support
  * Based on Debian 7.5 Wheezy
  * Kernel support to major USB Wi-Fi adapters(8188eu&8192cu)
  * Debian 7.5 ARMHF repository (better than Ubuntu one)
  * LXDE base desktop with low mem consumption
  * audio CODEC (jack audio) and sunhdmi (HDMI audio)
  * DATA-card(card1) activity to green led 
  * X11VNC, SSH (SFTP too) and other basic utils installed
  * Iceweasel browser
  * Gnome Mplayer (less CPU consumption than lxmusic)
  * Eable OTG device fuction (g_mass_storage)
  * Expanding all tf-card space to rootfs when first booting 
===== Installation =====
==== Hardware ====
  * cb2-2cards 
  * card-reader
  * TF card (>=2G,class 10 suggeted)
  * HDMI and Monitor 
  * USB mouse and keyboard 
=== More ===
  * SATA
  * Data tf card 
  * USB to miniUSB tieline 
==== Get image ====
  - Get newest image [[http://dl.cubieboard.org/software/cb2-2cards/debian/image/cubieez-cb2-2cards-v2.0-20140812/cubieez-cb2-2cards-v2.0-20140812.tar.gz|cubieez-2.0]]
  - Get origin md5sum to check you image is completed
<code>
$ md5sum cubieez-cb2-2cards-v2.0-20140812.tar.gz > my_md5sum
$ cat my_md5sum 
Compared with origin md5sum:dbb974882aa352dbcf3201ff8bfef676
</code>



==== Write to card ====
  * For linux users :
<code>
$ sudo tar -zxvf cubieez-cb2-2cards-v2.0-20140812.tar.gz
$ sudo umount /dev/sdx //sdx is your tf-card device label ,example sdb  
$ sudo dd if=cubieez-cb2-2cards-v2.0-20140812.img of=/dev/sdx 
$ sudo sync 
</code>
 
<note>"dd" is a dangerous operation,make sure sdx is your tfcard </note>
  * For windows users：using [[http://dl.cubieboard.org/software/tools/windows/win32diskimager-v0.7-binary.zip|win32diskimager]] write image to card.
==== Booting ====
  - Insert boot card to** card2 slot** (bootcard)
  - Connecting board and monitor by HDMI
  - Insert  network cable 
  - Power on 
<note>  First booting ,the system will reboot once to expand rootfs </note> 
==== passwd ====
user:**cubie** passwd:**cubieboard**
==== test ====
{{:tutorials:cb2-2cards:summary.png?600|}}
=== Modules ===
<code>
cubie@cubie:~$ lsmod 
Module                  Size  Used by
disp_ump                 861  0 
g_mass_storage         43206  0 
sunxi_cedar_mod         9962  0 
mali_drm                2608  1 
drm                   195017  2 mali_drm
lcd                     3638  0 
mali                  111536  0 
ump                    51204  4 mali,disp_ump
</code>

=== Network ===
== Cable network ==
<code>
root@cubie:/# ifconfig 
eth0      Link encap:Ethernet  HWaddr 02:d5:09:40:b0:4f  
          inet addr:**192.168.1.110**  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::d5:9ff:fe40:b04f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:17604 errors:0 dropped:0 overruns:0 frame:0
          TX packets:117 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4331986 (4.1 MiB)  TX bytes:10515 (10.2 KiB)
          Interrupt:87 Base address:0xa000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:240 (240.0 B)  TX bytes:240 (240.0 B)

root@cubie:/# ping cubieboard.org 
PING cubieboard.org (192.163.232.151) 56(84) bytes of data.
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=1 ttl=51 time=283 ms
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=2 ttl=51 time=283 ms
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=3 ttl=51 time=284 ms
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=4 ttl=51 time=284 ms
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=5 ttl=51 time=284 ms
64 bytes from 192-163-232-151.unifiedlayer.com (192.163.232.151): icmp_req=6 ttl=51 time=283 ms
</code>
== USB WIFI ==
cb2-2cards can support 8188eu ,when you insert wifi dongle,cubieez will modprobe 8188eu auto.
  - You can config wifi in cubieez desktop.{{:tutorials:cb2-2cards:wifi.png|}} 
  - Restart networking 
<code>
$ sudo /etc/init.d/networking restart 
</code>


=== Rootfs space ===
<code>
root@cubie:/# df -h 
Filesystem      Size  Used Avail Use% Mounted on
rootfs          7.3G  1.5G  5.6G  21% /
/dev/root       7.3G  1.5G  5.6G  21% /
devtmpfs        382M     0  382M   0% /dev
tmpfs            96M  548K   95M   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           191M   68K  191M   1% /run/shm
tmpfs           478M   24K  478M   1% /tmp
tmpfs           478M     0  478M   0% /var/tmp
/dev/mmcblk0p1   12M  4.6M  6.5M  42% /media/cubieboard2

</code>
===HDMI Audio=== 
<code>
root@cubie:/# speaker-test -twav -c2 

speaker-test 1.0.25

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 4096 to 32768
Period size range from 1024 to 8192
Using max buffer size 32768
Periods = 4
was set period_size = 8192
was set buffer_size = 32768
 0 - Front Left
 1 - Front Right
</code>
===HP Audio===
Switch to HP output 
<code>
$ vim.tiny /etc/asound.conf

pcm.!default {
    type hw
    card 0  //card0 is HP 
    device 0 
  }
  ctl.!default {
    type hw
    card 0 //card0 is HP 
  }
</code>
===SSH=== 
<code>
$ ssh cubie@192.168.1.110
aaron@cubietech:/work/$ ssh cubie@192.168.1.110
cubie@192.168.1.110's password: 
Linux cubie 3.4.79 #1 SMP PREEMPT Sat Aug 9 12:44:49 CST 2014 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.
Last login: Tue Aug  5 23:11:24 2014
</code>
===DATA Card=== 
Green led show Data card(card1) activity 
===SATA=== 
cb2-2cards support 2.5 inch HDD&3.5 inch HDD [[http://cubieboard.org/2013/09/24/how-to-support-3-5-inch-hdd-on-cubieboard/|3.5 inch HDD]]
===USBx2=== 
USB2.0x2 can support:
  * Both wireless and wire USB mouse/keyboard
  * USB host 
=== OTG Device ===
Allwinner otg support device fuction ,Storage on board can mounted to pc 
  * Mount boot card first Partition to PC（cubieez-2.0 default ）
<code>
$ sudo modprobe g_mass_storage file=/dev/mmcblk0p1 removable=yes stall=0
</code>
  * Mount data card to pc 
<code>
$ sudo rmmod g_mass_storage
$ modprobe g_mass_storage file=/dev/mmcblk1 removable=yes stall=0
</code>
  * Mount sata to pc 
<code>
$ sudo rmmod g_mass_storage
$ modprobe g_mass_storage file=/dev/sda removable=yes stall=0
</code>

===IR Input=== 
IR module is sunxi-ir.ko
<code>
$ git clone https://bitbucket.org/emiliolopez/keybinder.git
$ cd keybinder
$ sudo make install 
</code>
Taking  a Infrared remote control for a test 
<code>
$ sudo keybinder /dev/input/event0
cubie@cubie:~/keybinder$ sudo keybinder /dev/input/event0
Reading key input from /dev/input/event0 (sunxi-ir)
Loaded config items
Keycode 1 pressed
Keycode 2 pressed
Keycode 3 pressed
</code>
===== Config =====
==== cubie-config ====
"Ctrl+Alt+t" open a terminal,run "cubie-config" as root
{{:tutorials:cb2-2cards:passwd.png?600|}}
  * Expand Filesystem,when first boot ,filesystem was expanded 
  * Change User passwd 
  * Enable Boot To Desktop Or Not
  * Host Name Changing 
  * Eable SSH Or Not
===== Known bugs or limitations =====
  * HDMI can't adapt to some monitor,this a display bug .please try: 
<code>
  $ sudo fbset -left 10 
</code>
  * Line-in is not work due to hardware bug.
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{{tag>Cubieboard Cubietruck}}
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