Datasheet

4D SYSTEMS 4D 4.3” LCD CAPE – BEAGLE BONE BLACK
© 2014 4D SYSTEMS Page 5 of 10 www.4dsystems.com.au
Changing the brightness (Android)
Changing the brightness on Android is simple.
Navigate to the Settings menu, and to the Display
option, and then to Brightness. Slide the slider to
the desired position.
Android Information
The 4DCAPE-43(T) is compatible with Android 4.2.2
and has been tested with an image from TI (see
section 3.2).
It has been noticed however that the EEPROM
Jumpers both need to be connected/closed
otherwise the CAPE may not be detected by the
Android OS.
Calibrating resistive touch (Angstrom)
When a distribution is used for the first time with a
4DCAPE-43T, the default calibration application
that comes with the Angstrom distribution is
started automatically (Refer to section 3.2) on
startup of Angstrom. If the calibration is however
input incorrectly and it is required to be set again, a
file must be deleted manually in order to then
recalibrate the display.
Note, this may change as newer distributions of
Angstrom become available, or if different
distributions are used, so these instructions may
become obsolete or inaccurate.
One method is to SSH into the BBB using your PC,
navigate to the following folder and delete the
specified file.
/etc/pointercal.xinput
One this file has been deleted, the calibration utility
can be run again.
4. EEPROM Details
On the 4D 4.3” LCD CAPE there is an EEPROM which
is used to configure the Beagle Bone Black with the
appropriate configuration in order to use the Cape.
Depending if the board is a 4DCAPE-43 or a 4DCAPE-
43T the EEPROM contents will vary slightly.
Please note: some EEPROM content refers to the
LCD4 which is made by CircuitCo. This is the case
due to how the BBB identifies the CAPE and what
drivers to apply to it. Since the 4DCAPE-43(T)
utilises the LCD4 drivers, this must be the case.
4DCAPE-43 EEPROM
EEPROM Support: YES
Board Name: 4D 4.3 LCD CAPE - 4DCAPE-43
Manufacturer: 4D Systems
4DCAPE-43T EEPROM
EEPROM Support: YES
Board Name: 4D 4.3 LCD CAPE - 4DCAPE-43T
Manufacturer: 4D Systems
Note (*): The Beaglebone, Beaglebone Black and
Beagleboard remains the property of
beaglebone.org. All references to the words
Beaglebone, Beaglebone Black, Beagleboard are
licensed under a Creative Commons Attribution-
Share Alike 3.0 license.
All references to CircuitCo and LCD4 remain the
property of CircuitCo and beagleboardtoys.org and
are not affiliated to 4D Systems in any way.