embedded s

7/30/2019 Embedded S

1/18


2/18

SYSTEMWhat Is System?

P e r f o r m s P r e d e f i n e d F u n c t i o n O rT a s k

T a s k O r F u n c t i o n B a s e d O nA p p l i c a t i o n

T h e S y s t e m M a n i p u l a t e d b y t h ep r o g r a m m e r v i a p r o g r a m s & t h ep r o g r a m s b a s e d o n A p p l i c a t i o n


3/18

System On a Chip

The Appl icat ion Contro l led Or Managed By

The System The System Based On The Chi p Used

The Chip Performs Wha t Program WrittenBy The Programm er To Perform The

Appl icat ion Total Control System Of The Appl icat ion By

The Chi p, Then It Cal led As System On AChip


4/18


5/18

HARD WARE

I t s A Medium For Chip With Real TimeAppl icat ion

I t Is A Part Of Chip & Meet s TheEnvironme nt & includes Microprocess or orMicrocontrol ler

I t Consists I /O Devices ,T imer/CounterInterrupts , Memories , Adc&dac & Etcbased

On The Chip
http://en.wikipedia.org/wiki/Computer_system


6/18

FIRM WARE

Term Im plies The S oftware Can Control

The Hardware Through The ProgramInstruct ions Or Commands

Its The Data Structure To Controls The Hardware

Typically It Resides Part Of The Hardware Like PLAStructure Or MEMORIES Or FLASH


7/18

Embedded System

Embedded system understand as

System On a Chip( SOP)

Comprise Both Hardware & Software

Complete Dev ice For Dedicated Appl icat ionor Task

Embed ded system s are not always

standalone devices& it s a Emerging f ie ld of Real T ime World forConsumer Electronic Appl icat ions


8/18

Application Categories

1 . Standalone

2 . Real T ime

3 . Networked Informat ion Appl iances

4 . Mobi le Devices


9/18

Standalone ES I t s Predef ined System With Des ired Outputs

Gets The Input & Produces The OutputsWhat Have To Do For The Par t icu lar Input .

Input May Be A Electr ic a l S ign al FromTransducers

Else Comma nds From A Human Through

Such Keys Or Buttons Outputs Also A Electr ic a l S ignal By

Actuat ing The Output Device Such AsMotors Or Heaters Or Display Device


10/18

Real-time ES Spec i f ic Work Has To Be Done In A Speci f i c

Time Per iod

Gets The Input & Produces The OutputsWhat Have To Do With In Speci f ied T ime

Inpu t & Outpu t For The System As ViceVersa


11/18

Networked Information

Appliances System Prov ided with Network inter fa ces

and& accessed by the network such as LAN

&WAN

Embedded Systems Are Connected WithNetwork Running TCP/IP protocol such as

internet or Company 's intranet

Miss i le Emb edded with a Tracking Sys tem


12/18

Mobile Devices

Portabl e Systems & Mobile Devi ces such as

Mobi le Phones , Smart Phones & PersonalDig i ta l Ass is tants

PDAs are now Capable o f Support ing genera l

purpose appl ica t ion sof t wares such as wordprocessors , games etc .


13/18

Design of Embedded

System Intend the funct ion al i ty i s a f i r s t s tep

Formal ized by the sort of def in i t ion L anguagesHDL such as Ver i log & VHDL

Resul t ing Des ign i s converted into hardwareor sof tware compone nts which are thenimplemented


14/18

Operating System

Class i f i ed into Non-rea l T ime & Real T ime

Response Time not guaranteed in Non-rea lTime Operat ing Sys tem.

Example : - Wi ndows CE & Palm OS

Response Time guaranteed for each event in

Real T ime Operat ing Sys tem , i t s used formainly in t ime-cr i t i ca l Appl icat ions such asMeasurement and Contro l Sys tems

Example : - VX Works ,OS-9 ,Symbian,RT Li nux


15/18

Embedded System

Constraints Smal l S ize , Low Wei ght

Hand-held & Transportable

Low PowerEven run in batter y Power

Harsh Environment

Power F luctuat ion,L ighte ing ,Heat ,Vibrat ion

Safety-Cr i t ica l Operat ionsMust Funct ion Correct ly & Must not

Funct ion Correct ly

Extreme Cost Sens i t iv i ty

$0 .5 adds up over 1 ,000,000 u nits


16/18

Languages Low level Programming L anguages such as

Assembly Language.

Less Memory

High level Programming L anguages such as

C & C++.etc Low development Time

Ease of Maintenance


17/18

Development Tools

AssemblerConverts ASM into Machine codes 0s & 1s

Compilers

Converts high level language into low level Language

Debuggers In Circuit Debugger (ICD) & In CircuitEmulators (ICE) & Integrated DevelopmentEnvironment (IDE) , it combines both ICE & ICD

Linkers

one or more objects generated by the CompilerConverted into Single Executable Form.

Loaders

Dumps the Executable form of code into Chip


18/18

Any Queries ?

embedded s

Documents