User manual

DHCP server running specifically for USB0 interface. The DHCP server should give IP address to

the new USB0 interface of your host PC so you can make SSH connection from your PC to the

default board IP address of the USB0 interface – 192.168.2.1.

You can connect to the board using a mini USB cable and an SSH client (if you use Windows you

might use "puTTY", for example) at address 192.168.2.1.

For Windows operating system – upon connection, the board should show up in "Windows Device

Manager" as "RNDIS Ethernet Gadget". You might be asked to install a driver. The drivers can be

found online as "RNDIS driver" (Remote Network Driver Interface Specification). The drivers are

provided by Microsoft and they should be available for every Windows distribution – refer to the

respective files and articles provided by Microsoft on how to install the required drivers.

2.5.5 SSH via Ethernet connector

SSH protocol allows you to login remotely to the command-line interface of the A20-OLinuXino-

LIME board. You would need an active Ethernet connection to the board.

The newest images have a configuration that allows SSH via the Ethernet connector. The static IP

address to access the board is 192.168.1.254

2.6 Changing the default video output resolution

Depending on the display or the screen you want to use with the A20-OLinuXino-LIME2, you

might need to apply software changes to the prebuilt Android or Linux image. The typical

OLinuXino user would not need to edit the files, however.

To ease the process of changing the resolution we have compiled a number of Android images for

the Android users (with hard-coded video output settings). Alternatively, for Debian Linux users, we

have provided a shell script that can be executed in order to set preferred video output and

resolution.

For Android that you boot from the NAND memory you would need an image suitable for the

specific resolution. Download locations to such images might be found at the wiki article for the

A20 board here: https://www.olimex.com/wiki/A20-OLinuXino-LIME2.

For Linux Debian you would need to execute a shell script to be able to change the resolution. It is

very good idea to use a serial cable for connection to the board from a personal computer since in

this case you are dependent on a video resolution (a cable like USB-SERIAL-CABLE-F). When the

board boots type:

./change_display*

./change_display_a20_olimex.sh

It looks like this:

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