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  • Learning Embedded Android N Programming
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Learning Embedded Android N Programming

Learning Embedded Android N Programming

By : Morgillo
2.8 (5)
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Learning Embedded Android N Programming

Learning Embedded Android N Programming

2.8 (5)
By: Morgillo

Overview of this book

Take a deep dive into the Android build system and its customization with Learning Embedded Android Programming, written to help you master the steep learning curve of working with embedded Android. Start by exploring the basics of Android OS, discover Google’s “repo” system, and discover how to retrieve AOSP source code. You'll then find out to set up the build environment and the first AOSP system. Next, learn how to customize the boot sequence with a new animation, and use an Android “kitchen” to “cook” your custom ROM. By the end of the book, you'll be able to build customized Android open source projects by developing your own set of features.
Table of Contents (10 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Understanding the Architecture
1. Understanding the Architecture
An overview of the Android system
Android compatibility
Beyond Java
From Dalvik to ART runtime
Meeting the Compatibility Test Suite
Diving deeper with CTS Verifier
Summary
2
2. Obtaining the Source Code – Structure and Philosophy
2. Obtaining the Source Code – Structure and Philosophy
The Android philosophy
Setting up the environment
Installing the required tools
Getting ready
A look inside AOSP
Summary
3
3. Set up and Build – the Emulator Way
3. Set up and Build – the Emulator Way
Preparing the host system
The Android build system
Creating a custom device
From zero to the screenlock
Summary
4
4. Moving to Real-World Hardware
4. Moving to Real-World Hardware
Debugging tools
Choosing our hardware
Compiling Android for a real-world device
Bootloader mode
Flashing Android images
Summary
5
5. Customizing Kernel and Boot Sequence
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5. Customizing Kernel and Boot Sequence
An overview of the Linux kernel
Setting up the toolchain
Preparing the host system
Configuring the kernel
Compiling the kernel
Working with non-Google devices
Driver management
Altering the CPU frequency
Customizing the boot image
Android boot sequence
Summary
6
6. "Cooking" Your First ROM
6. "Cooking" Your First ROM
History of custom ROMs
An overview of Android recovery
Device permissions
Chef toolkit
Cooking our first ROM
Flashing our custom ROM
Summary
7
7. Tailoring Your Personal Android System
7. Tailoring Your Personal Android System
Receiving over the air updates – OTA
Creating over the air updates
Advanced ROM customization
Hacking the Android framework
Enhancing the system performance
Advanced Linux kernel modding
Looking forward
Summary
8
8. Beyond the Smartphone
8. Beyond the Smartphone
Meeting Arduino
Exploring the possibilities of the Internet of Things
Domotics
Can a green droid entertain you?
Summary
9
Index
Index

Compiling the kernel

Once you have a properly configured environment and a brand new configuration file, you just need one single command to start the building process. On your terminal emulator, in the kernel source folder, launch:

$ make

The make command will wrap up the necessary configuration and will launch the compiling and assembling process. The duration of the process heavily depends on the performance of your system: it could be one minute or one hour. As a reference, an i5 2.40 GHz CPU with 8 GB of RAM takes 5-10 minutes to complete a clean build. This is incredibly quicker than compiling the whole AOSP image, as you can see, due to the different complexity and size of the code base.

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