• It is expected that the reader is proficient in the C language and understands how computer systems work
• A GNU/Linux development machine is required to apply the concepts explained
• Going through the example code provided is sometimes necessary to fully understand the mechanisms implemented
• The reader is encouraged to modify, improve, and reuse the examples provided, applying the methodologies suggested

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Embedded-Systems-Architecture. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/EmbeddedSystemsArchitecture_ColorImages.pdf.

There are a number of text conventions used throughout this book.

code_in_text: Indicates code words in text, folder names, filenames, file extensions, pathnames,  user input, and interaction with the command console. Here is an example: "Compile the source file, hello.c,  to produce the executable."

A block of code is set as follows:

#include <stdio.h>
int main(void) {
    printf("Hello, world!");
    return 0;
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

CFLAGS=-Wall

hello.o: hello.c
    gcc -c -o $(@) $(^) $(CFLAGS) 

Any command-line input or output is written as follows:

$ gcc -c -o hello.o hello.c
$ make clean

Commands for the debugger console are written as follows:

> add-symbol-file app.elf 0x1000
> bt full

Bold: Indicates a new term, an important word, or words that you see onscreen.