Embedded Systems Firmware Demystified
Embedded Systems Firmware Demystified
Author : Ed Sutter
ISBN: 1-57820-099-7
The goal of this book is to prepare you for a real embedded systems project by walking you through an entire embedded systems design. Not coincidentally, the project source code included is a piece of firmware — an embedded boot platform — that can simplify all your future projects. I assume a small hardware design with CPU, memory, and some peripherals. I present a basic schematic and walk you through the method in which instructions are fetched from memory. I discuss devices, as well as concepts. I examine flash memory versus EPROM, SRAM versus DRAM, microcontroller versus microprocessor, and data bus versus address bus. I also explain how you convert your C and assembly language source code to a binary image that ends up in the memory device from which the CPU boots (the boot flash memory).
Several chapters cover the basic steps of starting up an embedded system and getting a working application (including the basic boot in assembler), exception handling, flash memory drivers, a flash file system, and serial and Ethernet connections. The result is an understanding of how an embedded systems project gets started and how to build a platform on which an embedded systems application can reside.
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