OLIMEX© 2012
A13-OLinuXino user's manual
2.5 Button functions in Android
The following buttons represent functions in the Android:
PWR_BUT
– used to wake the board from stand-by
HOME
– shows the home screen; note that HOME is also used to enter bootloader mode for
firmware update
ENTER
– to select a choice
MENU
– brings up the main menu
VOL+
– increases the volume
VOL-
– lowers the volume
For more information on the button functions check the Android documentation.
Note that
RESET
button will perform a hardware reset of the board, not controlled by the OS.
2.6 How we configured the Android image
This is a detailed explanation of how we got to tweak the Android image configuration files. It is
worth mentioning that we used Ubuntu with Linux Kernel 3.2 for the steps below.
2.6.1. Getting the Android SDK tools
Download the Android SDK tools for Linux from:
http://developer.android.com/sdk/index.html
Note that you have to click “Other platforms” and get the one for Linux. Then you extract it:
tar zxfv android-sdk_r20.0.3-linux.tgz
Note that the above line would vary depending on the version you have downloaded (by the time of
writing 20.0.3 was the latest one).
2.6.2. Adding information for the board in the Linux
Create the following file:
.../etc/udev/rules.d/70-android.rules
and add the following line inside:
SUBSYSTEM=="usb_device", SYSFS{idVendor}=="18d1", MODE="0666"
then we save the file and change its properties with chmod +x 70-android.rules and reboot the
computer.
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