Course: Android Internals Lecture 1: Basic concepts of mobile platforms

1. Android internals
Egor Elizarov
SPbSU 2012

2. Legal info
 Android internals by Egor Elizarov is licensed under a
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
 You are free to
– copy, distribute, display, and perform the work
– make derivative works
 Under the following conditions
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– Share Alike. If you alter, transform, or build upon this work, you may
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 All pictures and trademarks are the property of their respective owners. Use of
these trademarks and pictures is subject to owners permissions.
 Corrections, suggestions, contributions and translations are welcome!
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3. Lecture 1
Basic concepts of mobile platforms
yegor.yelizarov(at)gmail.com
Rev: 1.1 http://vk.com/android_internals
Last update: 05/30/2012
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4. Why do we need OS

To control resources

To manage hardware

To simulate simultaneous processes execution
on a single core

To provide inter-process communications

To provide user interface
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5. Mobile OS features

Power management

Specific HW

Special permission model

Touch friendly UI
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6. Mobile OS history
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7. Peripherial devices

Connectivity (WiFi, Bluetooth, 3G)

Input devices (touchscreen, IR remote control,
mouse, keyboard)

Sensors (gyroscope, accelerometer,
magnetometer, light, compass, GPS)

Video system (LCD, DVI, HW acc.)
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8. System on Chip

System On Chip - is an integrated circuit that
integrates all components of a computer or other
electronic system into a single chip.

Popular CPU architectures: x86, PowerPC,
ARM, MIPS

ARM SoC Vendors: Texas Instruments, NVidia,
Freescale, Samsung, Qualcomm, etc.
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9. Some terms

Single board computer (Freescale i.MX53 quick
start board, TI BeagleBoard)

Evaluation board (TI OMAP3EVM, NVidia
Tegra)

Board Specific Package
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10. Device development cycle
Evaluation board
With BSP
Hardware
design
Custom board
Platform
bring up
Custom board
With OS
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11. Next Time

Android history

High level architecture

Android version
control system

Directory code layout Source: http://developer.android.com
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12. Useful links

http://vk.com/android_internals

http://developer.anroid.com

http://android.com

http://arowboat.org

K. Yaghmour. Embedded Android. Early
Release, O'Reilly, October 2011
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13. Thanks to

Sergey Matyukevich for review and advices
(www.linkedin.com/pub/sergey-
matyukevich/31/889/769)

Nikolay F. Fominykh for review and advices
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