By Xiaocong Fan
This e-book integrates new principles and subject matters from genuine time platforms, embedded platforms, and software program engineering to offer a whole photo of the complete technique of constructing software program for real-time embedded functions. you won't purely achieve an intensive figuring out of innovations concerning microprocessors, interrupts, and method boot technique, appreciating the significance of real-time modeling and scheduling, yet additionally, you will research software program engineering practices resembling version documentation, version research, layout styles, and traditional conformance.
This e-book is divided into 4 components that will help you examine the major inspiration of embedded structures; half one introduces the advance strategy, and comprises chapters on microprocessors and interrupts---fundamental themes for software program engineers; half is devoted to modeling options for real-time structures; half 3 seems on the layout of software program architectures and half 4 covers software program implementations, with a spotlight on POSIX-compliant working systems.
With this ebook you are going to learn:
- The professionals and cons of alternative architectures for embedded platforms
- POSIX real-time extensions, and the way to enhance POSIX-compliant genuine time purposes
- How to exploit real-time UML to record procedure designs with timing constraints
- The demanding situations and ideas regarding cross-development
- Multitasking layout and inter-task conversation options (shared reminiscence gadgets, message queues, pipes, signals)
- How to take advantage of kernel items (e.g. Semaphores, Mutex, situation variables) to handle source sharing matters in RTOS purposes
- The philosophy underpinning the thought of "resource supervisor" and the way to enforce a digital dossier method utilizing a source supervisor
- The key rules of real-time scheduling and several other key algorithms
- Coverage of the most recent UML typical (UML 2.4)
- Over 20 layout styles which characterize the easiest practices for reuse in quite a lot of real-time embedded systems
- Example codes that have been proven in QNX---a real-time working process commonly followed in industry
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Additional info for Real-Time Embedded Systems: Design Principles and Engineering Practices
1 billion ARM-based chips were sold, representing over 95% of the smartphone market, 10% of the mobile computer market, and 35% of the digital TV and set-top box market . As integrated circuit technology advances, it becomes feasible to manufacture more and more complex processors on a single chip. It is clear that high-end applications demand more address space and computing power than those offered by 32-bit processors, and the transition from 32-bit computing to 64-bit computing has become the trend.
This is a dynamic segment, specifying information for dynamic linking. dynamic section, followed by a few other sections such as a hash table section, symbol table section, a string table section, and a relocation table section. 34 Chapter 2 • • • INTERP. This segment is meaningful only for executable files, specifying the location and size of a null-terminated path name to a program interpreter (program loader or dynamic linker). If it is present, it must precede any loadable segment. • NOTE. This segment specifies the location and size of auxiliary information.
An operating system itself needs to be loaded from somewhere when the system starts. This job is done by a “starter” program, also known as an initial operating system loader. Where is such an operating system loader found when the system is powered on? Moreover, there are many embedded systems running without an operating system. Where should the instructions be loaded when such an embedded system starts? This brings us to memory mapping. Via a script file, a linker can be directed to map each segment of an executable file to a specific memory location available on the target system.