JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Computer Organization and Operating System

Course Objectives

The objectives of this course are:

• 1. To provide broad understanding of the requirements of Real Time Operating Systems.
• 2. To make the student understand, applications of these Real Time features using case studies.

Course Outcomes:

• 1. Be able to explain real-time concepts such as preemptive multitasking, task priorities, priority inversions, mutual exclusion, context switching, and synchronization, interrupt latency and response time, and semaphores.
• 2. Able describe how a real-time operating system kernel is implemented.
• 3. Able explain how tasks are managed.
• 4. Explain how the real-time operating system implements time management.
• 5. Discuss how tasks can communicate using semaphores, mailboxes, and queues.
• 6. Be able to implement a real-time system on an embedded processor.
• 7. Be able to work with real time operating systems like RT Linux, Vx Works, MicroC /OS- II, Tiny Os

UNIT - I

Introduction: Introduction to UNIX/LINUX, Overview of Commands, File I/O, (open, create, close, lseek, read, write), Process Control (fork, vfork, exit, wait, waitpid, exec).

UNIT - II

Real Time Operating Systems: Brief History of OS, Defining RTOS, The Scheduler, Objects, Services, Characteristics of RTOS, Defining a Task, asks States and Scheduling, Task Operations, Structure, Synchronization, Communication and Concurrency. Defining Semaphores, Operations and Use, Defining Message Queue, States, Content, Storage, Operations and Use

UNIT - III

Objects, Services and I/O: Pipes, Event Registers, Signals, Other Building Blocks, Component Configuration, Basic I/O Concepts, I/O Subsystem

UNIT - IV

Exceptions, Interrupts and Timers: Exceptions, Interrupts, Applications, Processing of Exceptions and Spurious Interrupts, Real Time Clocks, Programmable Timers, Timer Interrupt Service Routines (ISR), Soft Timers, Operations.

UNIT - V

Case Studies of RTOS: RT Linux, MicroC/OS-II, Vx Works, Embedded Linux, and Tiny OS.

TEXT BOOKS

• 1. Real Time Concepts for Embedded Systems – Qing Li, Elsevier, 2011

REFERENCES

R19 M.Tech. DECE/DECS

• 1. Embedded Systems- Architecture, Programming and Design by Rajkamal, 2007, TMH.
• 2. Advanced UNIX Programming, Richard Stevens
• 3. Embedded Linux: Hardware, Software and Interfacing – Dr. Craig Hollabaugh R19 M.Tech. DECE/DECS M.TECH.- I YEAR- II SEMESTER DECE/DECS