Embedded_System

Embedded_System - Software design issues Round robin scheme...

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A Paper Presentation on Embedded Systems www.powerpointpresentationon.blogspot.com
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Embedded System ???. ..... Hardware is driven and controlled by software Software runs in a computer system (usually a micro-controller) Preprogrammed to do specific function Let us look into some examples……
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Microcontroller based lock Thermostat controller Pacemaker
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Applications Communications Automotive automatic braking Military applications – Missile guidance systems Industrial applications Robotics
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System organization
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Embedded system design requirement Computer design requirement System-level requirement
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Computer design requirement Real time/reactive operation Small size, low weight Safe and reliable Harsh environment Cost sensitivity
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System-level requirement End product utility System safety and reliability Controlling physical systems Power management
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Unformatted text preview: Software design issues Round robin scheme Loop: Await tick; Read S1;take action(S1); Read S2;take action(S2); Read S3;take action(S3); Forever Concurrent Programming QNX-RTOS Features : Micro kernel architecture Message based interprocess communication PROCESS WAITING RUNNING READY BLOCKED EVENT Synchronous Programming 3 Level Architecture : Interactive I/O interface Reactive kernel Data management Future Possibilities More and more produced processors are used in embedded devices New applications like pervasive computing are emerging REFERENCES Book(s): Embedded microcomputer system- real time interfacing : Jonathan W. Valvano Website(s): 1.http://www.cs.cmu.edu 2.http://www.embedded.com 3.http://www.esterel.org 4.http://www.qnx.com THANK YOU !!!!!. .........
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Embedded_System - Software design issues Round robin scheme...

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