4d Systems 7.0” LCD CAPE for beaglebone black 4DCAPE-70T 4DCAPE-70T データシート

製品コード

4DCAPE-70T

4D SYSTEMS 4D 7.0” LCD CAPE – BEAGLE BONE BLACK

3. Getting Started

Requirements

The 4D 7.0” LCD CAPE is designed to work with
existing software and drivers already developed for
the Beagle Bone Black.

The Requirements for use are:



4DCAPE-70T Cape



Beagle Bone Black (BBB) with suitable
distribution loaded



5V DC Supply suitable for the Beagle Bone
Black, recommended 2A @ 5V.



A Stylus is recommended for accurate touch,
however is not required.

How to use the 4D 7.0” LCD CAPE

The following steps should be all that is required in
order to use the 4DCAPE-70T:

1. Connect the 4DCAPE-70T to the Beagle Bone

Black while the Beagle Bone Black is not
powered. Outline of the BBB is printed on the
back of the 4DCAPE-70T as a guide for
orientation.

2. If using with other cape’s, ensure the 4DCAPE-

70T is not conflicting pin wise to any other cape
installed.

3. Ensure the DIP Switch on the CAPE is set to a

different EEPROM ID to any other capes.

4. Ensure your Beagle Bone Black is loaded with a

suitable Linux distribution which is compatible
with the existing CircuitCo LCD7 00A3 CAPE or
4D  Systems  4DCAPE-70T  –  See  Section  6.
Angstrom  release  20.06.2013  or  later  is
required.  Android  4.2.2  has  also  been  tested
and  functions  correctly.  Other  distributions
may also be compatible with this display.

5. Connect a 5V Supply to the DC Jack of the

Beagle Bone Black. It is recommended to use a
2A supply to ensure sufficient supply.

6. Once power is connected, something should be

displayed on the 4DCAPE-70T as it is booted.
Once booted, the system should automatically
log in (assuming Angstrom Linux distribution is
used), and the Touch Screen Calibration Utility
should load automatically. If using the 4DCAPE-
70T without touch, this can be exited and
ignored.

7. Calibrate the 4DCAPE-70T using the utility by

following the on screen instructions. If the

utility is closed, it is available again under the
System – Administration menu.

8. Complete – the Angstrom desktop should be

displayed on the 4DCAPE-70T and is ready for
use, else Andoid etc.

For  support  of  the  BBB  and  various  distributions,
please  seek  support  from  the  respective  websites
associated with the BBB itself or the distributions.

A good place to start  for information and support
regarding  the  BBB  and  various  distributions
available, is

www.beagleboard.org

This website details how to update your software
on the BBB and the current version of Angstrom
available for the BBB

http://circuitco.com/support/index.php?title=Upd
ating_The_Software

This website details how to update your software
on the BBB for the current version of Andoid.

http://downloads.ti.com/sitara_android/esd/TI_A
ndroid_DevKit/TI_Android_JB_4_2_2_DevKit_4_1_
1/index_FDS.html

For support regarding the 4DLCD-70T CAPE
hardware itself, please go to the 4D Systems
website and either contact Support directly, or use
the 4D Systems Forum.

www.4dsystems.com.au

Changing the brightness (Angstrom)

By default the backlight brightness of the 4D CAPE
7.0  is  set  to  50%  with  Angstrom  distribution
(20.06.2013). It is possible to change the backlight
brightness as the backlight is PWM controlled.

Please  note,  these  instructions  may  become
obsolete as new versions of Angstrom are released,
or if different distributions are used.

One  method  is  to  SSH  into  the  Beaglebone  Black
from your PC, and set the backlight value that way.
Note  this  does  not  persist  over  restarts,  so  this
would need to be entered into a startup script if the
setting is required to be set each startup.

At the command prompt, type the following:

cd /sys/class/backlight/backlight.10/
echo 100 > brightness

Where 100 represents 100%, this can be changed
to any number from 0 to 100 as required.