JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Computer Organization and Operating System

Course Objectives:

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

Course Outcomes:

• 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.
• Able describe how a real-time operating system kernel is implemented.
• Able explain how tasks are managed.
• Explain how the real-time operating system implements time management.
• Discuss how tasks can communicate using semaphores, mailboxes, and queues.
• Be able to implement a real-time system on an embedded processor.
• Be able to work with real time operating systems like RT Linux, Vx Works, MicroC /OSII, 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,

R16 B.TECH CSE.

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

REFERENCE BOOKS:

• 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 R16 B.TECH CSE.