Android 4.4.3 Kitkat

Home 9 Android 4.4.3 Kitkat

Emtrion has designed this Android developer-kit to help you design your Android application quickly and efficiently, and evaluate it directly on the Hardware.

By simply running the virtual machine provided, you can start developing your application using the Android Studio. The SDK is already installed. No download or installation is required to start. Note: I might be necessary to configure the settings of the virtual machine according to the capabilities (memory and number of cores) of your desktop pc.
The version of Android OS running on the developer-kit is a custom Android version made by Emtrion. It is compliant with the vanilla Android 4.4.3 named “Kitkat” but with some restrictions on specific points. You can find those points below on the section “Available devices/interfaces”.

 

The process of making or rebuilding the Android OS is substantial and requires a lot of knowledge regarding Linux and Android. If you have any requests or particular needs, Emtrion can build a custom Android OS for you. Please contact sales@emtrion.de for any questions regarding this point.

 

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Documents

Functions

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Drivers

Name
Status
Comments
Limitations
Links

Touch

available

capacitive touch ft5x0x on EDT-Display

Backlight

available

for EDT-Display Family

Bluetooth

on request

Camera

on request

GPIO

available

via sysfs

WLAN

available

Support for DNXA-92 via PCIe, other modules on request.

USB Host

available

USB Mass Storage, USB Mouse, USB Keyboard

USBOtg

available

adb debugging via USBF or USB Mass Storage

UARTs

available

Audio

available

SGTL5000

SDCard

available

mounted as extsd

RTC

available

PCIe

available

LVDS

available

LCD

available

EDT-Displayfamilie

HDMI-Video

available

HDMI-Audio

available

Ethernet

available

wired, 1GB/s

True

Dienste

Name
Status
Comments
Limitations
Links

Debugging

available

adb via USB Function or TCP/IP

True

Release Notes

Android Kitkat v2015-06-18 for emtrion-MX6 (DIMM-MX6 and emCON-MX6)

  • first release which supports also emCON-MX6 boards

Known Issues

  • The software drivers for the USB OTG port are working successfully in device mode, but there is a load problem when the OTG port is used in host mode.
  • When using HDMI only: the startup hang if a splash screen is shown by the bootloader on the HDMI interface. As a workaround disable the splash screen in U-Boot by removing the environment variable load_splashscreen.

Article

Licensing and Certification

Details

Article available: True

Block diagram

Downloads / Documents

emtrion-MX6 Developer Kit for Android 4.4.3

User Manual for the developer kit Android kitkat 4.4.3 with...
30. August 2023 - en
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Developer Kits

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Supported operating systems

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FAQ

Android: Installing a new application


How to install a new application to android rootfs?

For installing an application one must provide the apk-file of this application. Copy this file for example to an SDC. The installation is performed by calling

pm install xxx.apk /

in the console of Android (terminal application or serial interface).

Changing display settings


Is it possible to change the display settings?

The selection of the display or display port is done by the bootargs parameter list. Have a look at the file /boot/uboot_script, there you'll find all the settings for different boot scenarios.

The variable "display_fb0" controls which display or display port should be used. Changing the parameters there results in different display settings. "display_fb0_lcd", "display_fb0_hdmi" and "display_fb0_lvds" are examples for selecting the RGB, HDMI or LVDS port.

It is possible to do some experiments by changing the values of "display_fb0" but make sure not to brick this file, otherwise, the kernel won't boot anymore and you must restore the flash contents. For modifying this file, boot the OS and change to the directory /boot. The editor vi (busybox) is available for editing.

cd /boot
busybox vi uboot_script

Note: Despite LVDS and HDMI, choosing a customer-specific display usually necessitates a specific adaption board. Please contact info@emtrion.de if you have special needs.

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