Android rpi-csimmonds-fosdem-2019
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The document discusses the process of running Android on a Raspberry Pi, emphasizing the requirements such as hardware specifications and libraries needed. It highlights the advantages of using Raspberry Pi for this purpose, including its affordability, accessibility, and hackability. Additionally, it covers notable projects, challenges faced, and existing resources for further training and development.
Android rpi-csimmonds-fosdem-2019
- 1. Running Android on the Raspberry Pi Android Pie meets Raspberry Pi Chris Simmonds FOSDEM 2019 Running Android on the Raspberry Pi 1 Copyright © 2011-2019, 2net Ltd
- 2. License These slides are available under a Creative Commons Attribution-ShareAlike 4.0 license. You can read the full text of the license here http://creativecommons.org/licenses/by-sa/4.0/legalcode You are free to • copy, distribute, display, and perform the work • make derivative works • make commercial use of the work Under the following conditions • Attribution: you must give the original author credit • Share Alike: if you alter, transform, or build upon this work, you may distribute the resulting work only under a license identical to this one (i.e. include this page exactly as it is) • For any reuse or distribution, you must make clear to others the license terms of this work Running Android on the Raspberry Pi 2 Copyright © 2011-2019, 2net Ltd
- 3. About Chris Simmonds • Consultant and trainer • Author of Mastering Embedded Linux Programming • Working with embedded Linux since 1999 • Android since 2009 • Speaker at many conferences and workshops "Looking after the Inner Penguin" blog at http://2net.co.uk/ @2net_software https://uk.linkedin.com/in/chrisdsimmonds/ Running Android on the Raspberry Pi 3 Copyright © 2011-2019, 2net Ltd
- 4. Why? • Porting Android to a dev board is a great way to learn about Android • It’s a good testing ground for new ideas • It’s fun! No, really it is! Running Android on the Raspberry Pi 4 Copyright © 2011-2019, 2net Ltd
- 5. What do you need to run Android? • Hardware from one of the supported architectures • ARM, x86 or MIPS, in 32 or 64 bit varieties • Has a recent version of Linux kernel (v4.4 or later) • At least 512 MiB RAM • At least 1 GiB flash storage - e.g. eMMC, SD card • Touchscreen or external display - e.g. HDMI • GPU with OpenGL ES 2.0 libraries (more about this later) Running Android on the Raspberry Pi 5 Copyright © 2011-2019, 2net Ltd
- 6. Android on dev boards DragonBoard, Hikey, BeagleBone, WandBoard, Raspberry Pi, Digi ConnectCore ... Running Android on the Raspberry Pi 6 Copyright © 2011-2019, 2net Ltd
- 7. Why Raspberry Pi? • It’s cheap • Easy to get hold of • Hackable • Because it is there Running Android on the Raspberry Pi 7 Copyright © 2011-2019, 2net Ltd
- 8. Hasn’t it been done already? Sure! Here are some notable projects • Android RPi: https://github.com/android-rpi • LineageOS: (unofficial build from KonstaKang) https://konstakang.com/devices/rpi3/LineageOS15.1 • RTAndroid: https://embedded.rwth-aachen.de/doku.php?id=en: tools:rtandroid • based on research by Igor Kalkov, now merged into emteria.os • emteria.os: https://emteria.com (not open source) • Android Things: https://developer.android.com/things/hardware/raspberrypi (not open source) Running Android on the Raspberry Pi 8 Copyright © 2011-2019, 2net Ltd
- 9. What do you need? • A copy of the Android Open Source Project (AOSP) • A Linux kernel with Android extensions • A fair knowledge of the hardware • All the help you can get from existing projects • A fairly fast computer • Time and patience Running Android on the Raspberry Pi 9 Copyright © 2011-2019, 2net Ltd
- 10. AOSP and RPi • What follows is based on Konsta’s port of LineageOS • My version of the code is at https://github.com/csimmonds/a4rpi-local-manifest • Challenges posed by the Raspberry Pi • Graphics • Lack of USB OTG port Running Android on the Raspberry Pi 10 Copyright © 2011-2019, 2net Ltd
- 11. Graphics: OpenGL • We need OpenGL ES 2.0 libraries with Android extensions • Three options • Get a copy of the OpenGLES binaries from the vendor, if they exist (they don’t for Broadcom BCM2708/2835) • Use Soft GPU, Swiftshader • Use Mesa and drm_hwcomposer Running Android on the Raspberry Pi 11 Copyright © 2011-2019, 2net Ltd
- 12. Graphics: Swiftshader SwiftShader OpenGLES OpenGLES App 3-D graphics android.opengl.* HWUI 2-D graphics libEGL.so libGLESv1_cm.so libGLESv2.so libEGL_swiftshader.so libGLESv1_CM_swiftshader.so libGLESv2_swiftshader.so Surface Flinger FBDEV Framework HAL Kernel Running Android on the Raspberry Pi 12 Copyright © 2011-2019, 2net Ltd
- 13. Graphics: Mesa3d mesa OpenGLES OpenGLES App 3-D graphics android.opengl.* HWUI 2-D graphics libEGL.so libGLESv1_cm.so libGLESv2.so libEGL_mesa.so libGLESv1_CM_mesa.so libGLESv2_mesa.so Surface Flinger DRM VC4 Framework HAL Kernel drm_hwcomposer gralloc libdrm Running Android on the Raspberry Pi 13 Copyright © 2011-2019, 2net Ltd
- 14. ADB • Raspberry Pi only has USB host ports, but ADB needs a USB peripheral port • Usually provided by a dual mode USB "On The Go" (OTG) port • (Actually, the BCM283x has OTG hardware but it is used internally to bridge the USB host controller, Ethernet, and so on) • But, we can use ADB over Ethernet instead $ adb connect Android.local connected to Android.local:5555 $ $ adb shell rpi3:/ # Running Android on the Raspberry Pi 14 Copyright © 2011-2019, 2net Ltd
- 15. Current status • Code for Android for Raspberry Pi is at https: //github.com/csimmonds/ a4rpi-local-manifest • Android Pie 9.0 r 30 • Using Swiftshader • Early stages: still many things to do Running Android on the Raspberry Pi 15 Copyright © 2011-2019, 2net Ltd
- 16. Delving deeper • If you would like to discover more about building Android platforms, visit http://www.2net.co.uk/training.html and enquire about training classes for your company • 2net training is available world-wide Running Android on the Raspberry Pi 16 Copyright © 2011-2019, 2net Ltd
- 17. Relevant links: Android 4 RPi https://github.com/csimmonds/a4rpi-local-manifest My web site http://www.2net.co.uk Any questions? Running Android on the Raspberry Pi 17 Copyright © 2011-2019, 2net Ltd