en:acc:vu8 [ODROID Wiki]

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====== ODROID-VU8C ======
{{:en:acc:vu8:vu8c.jpg?600|}}

8inch multi-touch screen for ODROID-C2 and C1+\\
It gives users the ability to create all-in-one, integrated projects such as tablets, game consoles, infotainment systems and embedded systems.

[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G147918565945|Where to buy]]
====== Specifications ======
  * 8-inch TFT-LCD
  * Resolution: 1024x768 pixels (4:3 ratio)
  * finger capacitive touch input (USB ID 18D1:4E12)
  * light brightness control with ODROID GPIO PWM
  * consumption : 700mA/5Volt (Only LCD and display controller)
  * angle : Left 75, Right 75, Up 75, Down 75 degree
  * Dimensions : 189 x 149 x 29 mm
  * Viewable screen size : 162 x121.5 mm (active area)\

====== Package include ======
{{:en:acc:vu8:package.jpg?500|}}

A. Assembled 8inch TFT LCD + 10 points multi touch screen\\
B. Plastic bottom case\\
C. Converter board\\
D. HDMI dual gender board\\
E. 8 x 3.5mm screws \\
F. 2port jumper cable\\
G. Micro-to-Micro USB Cable (approx. 8cm)\\
H. Micro-to-TypeA USB Cable (approx. 20cm) \\
I. 5V/4A Power supply\\

====== Usage ======
===== Software settings =====
Touchscreen drivers are available with support for 10 touch points, and proper drivers are integrated in the latest Ubuntu and Android OS images. Screen resolution must be configured to WVGA (1024x768) and the DVI option should be enabled on the “vout” parameter by editing the boot.ini file, as shown in the below.

<WRAP important>
To use the VU8 on C1/+ Linux system, the Kernel version must be
3.10.80-128 or higher (sudo apt-get update & sudo apt-get dist-upgrade).
</WRAP>

==== 1. Resolution configuration. ====
Edit boot.ini file.\\
Comment 1080p line out and uncomment the 1024x768 line enable "DVI" option.
<code>
.
.
# setenv m "1080p"  # 1080P@60Hz
.
.
setenv m "1024x768p60hz"
.
.
.
# HDMI DVI Mode Configuration

setenv vout "dvi" for C2
setenv vout_mode "dvi" for C1/C1+/C0
</code>

==== 2. Backlight ON/OFF. ====
Add the following lines into "/etc/rc.local".\\
**ODROID-C2**
<code>
path="/sys/class/gpio"
echo 234 > $path/export
echo 214 > $path/export
echo out > $path/gpio234/direction
echo out > $path/gpio214/direction
echo 0 > $path/gpio234/value
echo 0 > $path/gpio214/value
</code>
**ODROID-C1+/C1/C0**
<code>
path="/sys/class/gpio"
echo 97 > $path/export
echo 108 > $path/export
echo out > $path/gpio97/direction
echo out > $path/gpio108/direction
echo 0 > $path/gpio97/value
echo 0 > $path/gpio108/value
</code>
==== 3. Backlight control with PWM. ====
=== GPIO configuration ===
== ODROID-C2 ==
  cd /sys/class/gpio
  echo 214 | sudo tee export
  echo out | sudo tee gpio214/direction
  echo 0 | sudo tee gpio214/value
  echo 234 | sudo tee unexport
== ODROID-C1+/C1/C0 ==
  cd /sys/class/gpio
  echo 97 | sudo tee export
  echo out | sudo tee gpio97/direction
  echo 0 | sudo tee gpio97/value
  echo 108 | sudo tee unexport
=== PWM configuration ===
Load PWM driver modules.
  sudo modprobe pwm-meson
  sudo modprobe pwm-ctrl
Enable PWM via sysfs.
  cd /sys/devices/platform/pwm-ctrl
  echo 100000 | sudo tee freq0
  echo 1 | sudo tee enable0
Set duty cycle
  echo [0-1023] | sudo tee duty0

===== Hardware assembling =====
  * [[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G147918565945|Assembling VU8C]]

====== Documents ======
  * {{:en:acc:vu8:vu8c.pdf|VU8C schematic pdf}}