View source for VisionSOM-8MM Android demo application

{{PageHeader|VisionSOM-8MM Android demo application}} __toc__

This article presents the demo prepared by SoMLabs for the VisionSOM-8MM Android system. The source code is freely available on the github repository: https://github.com/SoMLabs/imx_android_visionsom_8mm_demo_app. In the Android system image for SoMLabs modules this application is available by default, as stated in this tutorial: [[VisionSOM_imx-android|VisionSOM imx-android]]. In the image, this application is built as the system app.

== User interface ==

The application's GUI contains two buttons for enabling and disabling on-board LEDs, VideoView widget and a slider changing the text displayed on the label below. It was written in the Java language using the Android Studio IDE.

[[File:android_demo_1.png|center|360px]]

== LEDs access ==

For the purpose of controlling LEDs in the device configuration files a new security domain was added (led_control). It has access to the two LEDs brightness files defined in the sepolicy:

<pre>
/sys/devices/platform/leds/leds/LED-IO-04/brightness	u:object_r:led_control:s0
/sys/devices/platform/leds/leds/LED-IO-05/brightness	u:object_r:led_control:s0
</pre>