Minor 2 Report

8/6/2019 Minor 2 Report

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Parallel and Serial Communication

Name of Student- Keshav Maheshwari (8102163)

Bhuvan Gupta (8102323)

Name of Supervisor- Mr Saurabh Chaturvedi

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

JAYPEE INSTITUTE OF INFORMATION TECHNOLOGY, NOIDA


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TABLE OF CONTENTS

Chapter No. Topics Page No.

Certificate from the Supervisor 3

Acknowledgement 4

Abstract 5Chapter No.1 Introduction

Basic knowledge about Parallel and Serial Ports 6

Chapter No. 2 Parallel Port Communication 7

2.1 Basic knowledge of parallel port

2.2 Programming at C Platform

2.3 Problem encountered in C language

2.4 Programming in Matlab

Chapter No. 3 Application of Parallel port (IC Tester) 16

Chapter No. 4 Serial Port communication

4.1 Basic knowledge of Serial Communication

4.2 Line Registers

4.3 Programming in C language

4.4 Bascom codes

Chapter No. 5 Application of Serial port (Touchpad) 23

Chapter No. 7 Final circuit diagram 39

References....40


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CERTIFICATE

This is to certify that the work titled Parallel and Serial Communication submitted by

Keshav Maheshwari and Bhuvan Gupta in minor project of degree of Bachelor of

Technology of Jaypee Institute of Information Technology, Noida has been carried out

under my supervision. This work has not been submitted partially or wholly to any other

University or Institute for the award of this or any other degree ordiploma.

Signature of Supervisor.

Name of Supervisor: Mr. Saurabh Chaturvedi

Designation: Lecturer

Department of Electronics and Communications Engineering

Jaypee Institute of Information Technology,Noida


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ACKNOWLEDGEMENT

First and foremost, we would like to thank God for blessing us with the strength, intelligence, and

patience to complete this project. We would like to express my sincere thanks to Mr.

Saurabh Chaturvedi and Mr. Sandeep Joshi who have been helping us by giving their valuable

suggestions and guiding us right way throughout theproject.

We are extremely thankful to the HOD of Electronics and Communication Engineering

Department, Prof. R. C. Jain for providing the infrastructural facilities to work in, without

which this work would have not been possible and Veer Bahadur Singh for providing his

desktop.

Signature of Students

Name of Student: Keshav Maheshwari , Bhuvan Gupta

Date: ..

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Abstract

We believe that learning in Electronics Engineering should reflect the current state of field as

well as introduce the principles that are shaping computing.

As in engineering course and during daily life also, we use parallel and serial ports knowingly

and unknowingly. Parallel ports are generally used in printer interfacing and serial ports have

greatly revolutionized the communication between devices so we are just studying them and

working on their application.

The first chapter gives an introduction to the project stating the structure of Parallel and

Serial ports. Second chapter discusses about the Matlab and C++ software which we have used

to implement our project work. Third and fourth chapter is about Parallel port

communication and their application. Chapter fifth and sixth, h o w we are handling Serial

port and its application that is touch pad.

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CHAPTER

1IntroductionProject IC tester - As the name suggest, our I.C tester will test digital integrated chips of 74

series. The basic idea of making ic tester came from digital electronics lab in 4th

semester. Whileusing those ics, we generally encountered with the problem of having wrong ics, which we got

to know after making whole circuit. So , this project is having real practical application.

We are using parallel ports to make ic tester, which we generally find in desktop not on modern

laptops. So whats the idea ?

Put the IC in, IC holder which will already be connected to our DB-25 i.e. parallel port

according to our program. Program will check each and every combination of the I.C and

produce the Output in details. Like "Gate 1 is good", "Gate is Bad etc .

Project Touchpad -The National Semiconductor Corporation PC 16550D is a programmable

communication interface designed to connect to virtually any type of serial interface. The 16550

is a universal asynchronous receiver/transmitter (UART) that is fully compatible with the Intel

microprocessors. The 16550 is capable of operating at 0 1.5 M baud rate. Baud rate is the

number of bits transferred per second, including start stop data and parity . The 16550 also

includes a programmable Baud rate generator and separates FIFO for input and output data to

ease the load on the microprocessor. E ach FIFO contain 16 bytes of storage . This is the most

common communications interface found in modern microprocessor based equipment including

the personal computer and many modems.

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CHAPTER

2Parallel Port

Parallel ports are the 25 pin cute things that you will find behind your computer panel. Here is a

picture below to show you the pin categories. Basically they are split into three categories. Thecontrol pins, status and data pins (as shown below).

Snapshot 2.1 : Pins of Parallel Port

Now data ports and status ports (pins actually) can be used for input and output data and the

status are used by the computer to find out the status of an external device and thus can serve a

good input port. Actually speaking mostly all these can be used for input and output but you can't

use output to status pins. (If your ports don't work just check your BIOS there will be a option toelect ports as bidirectional so just enable that option).

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Programming in Turbo C

Snapshot 2.1: Snapshot is showing output programme in Turbo C

Snapshot 2.2: Snapshot is showing parallel port

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Problem encountered in C

language:

Outportb is not working properly i.e

Not working Working

Include

Include

Void main()

{

Outportb(0x378,0xff);

}

Include

Include

Void main()

{



}

Very less documentation on i.c driving parallel port.

Never able to take input from parallel port.

not working Working

Include

Include

Void main()

{

inportb(0x378);

inportb(0x378);

Include

Include

Void main()

{



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CHAPTER

3Matlab codes for IC tester

B = zeros(1,4);

open = daqhwinfo('parallel')

DIO1 = digitalio('parallel','LPT1');DIO2 = digitalio('parallel','LPT1');

outreg = addline(DIO1, 0:7, 0, 'out');

inreg = addline(DIO2, 0:4, 1, 'in');

function and ()

{

putvalue(dio.Line(1:7), [ 1 1 1 1 1 1 1 1])

B = getvalue(DIO2.Line(1:4))

IF B ~= [1 1 1 1]


B=getvalue(DIO2.Line(1:4))IF B~= [0 0 0 0 ]


B=getvalue(DIO2.Line(1:4))

IF B~= [0 0 0 0]



IF B~= [0 0 0 0 ]

}

OR () % or implementation{



IF B ~= [1 1 1 1]



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IF B~= [1 1 1 1 ]



IF B~= [1 1 1 1]



IF B~= [0 0 0 0 ]

}

NAND () % nand implementation

{



IF B ~= [0 0 0 0]



IF B~= [1 1 1 1 ]



IF B~= [1 1 1 1]



IF B~= [1 1 1 1 ]

}

NOR () % nor implementation

{



IF B ~= [0 0 0 0]



IF B~= [0 0 0 0 ]


B=getvalue(DIO2.Line(1:4))IF B~= [0 0 0 0]



IF B~= [1 1 1 1 ]

}

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CHAPTER

4Serial Port:Serial communication is a popular means of transmitting data between a computer and a

peripheral device such as a programmable instrument or even another computer. Serial

communication uses a transmitter to send data, one bit at a time, over a single communication

line to a receiver. You can use this method when data transfer rates are low or you must transferdata over long distances. Serial communication is popular because most computers have one or

more serial ports, so no extra hardware is needed other than a cable to connect the instrument to

the computer or two computers together.

Snapshot 4.1 : Serial Port

ASYNCHRONOUS SERIAL DATA

Asynchronous serial data are transmitted and received without a clock or timong signal. Figure

illustrate two frame of asynchronous serial data. each frame contains a start bit and seven data

bits parity and one stop bit. in this figure a frame which conatin ascii chatacter has 10 bits. ,most

dial up connection system such as prodigy and America online use 10 bits for asynchronous

serial data with even parity. Most internet and bulletinboard service also use 10 bits but they

makes byte transfers of non ascii dat much easier to accomplish normally do not use parity.

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Different line register:

Fig: Line Control Register

outportb(PORT1 + 3 , 0x03); /* 8 Bits, No Parity, 1 Stop Bit */

we are giving value 00000011 at the address base+3 ie of line control register

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Fig: outportb(PORT1 + 2 , 0xC7); /* C7=10100111*/

we are giving value 10100111 at the address -Baseaddress+2 ie for FIFO control register

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Codes in C Language

#include

#include

#include #include


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errorcode = graphresult();

if (errorcode != grOk) /* an error occurred */

{

printf("Graphics error: %s\n", grapherrormsg(errorcode))

printf("Press any key to halt:");

getch();

exit(1); /* terminate with an error code */

}

outportb(PORT1 + 1 , 0); /* Turn off interrupts - Port1 */

/* PORT 1 - Communication Settings */

outportb(PORT1 + 3 , 0x80); /* SET DLAB ON */

outportb(PORT1 + 0 , 0x0c); /* Set Baud rate - Divisor Latch Low Byte */

/* Default 0x03 = 38,400 BPS */

/* 0x01 = 115,200 BPS */

/* 0x02 = 57,600 BPS */

/* 0x06 = 19,200 BPS */

/* 0x0C = 9,600 BPS */

/* 0x18 = 4,800 BPS */

/* 0x30 = 2,400 BPS */

outportb(PORT1 + 1 , 0x00); /* Set Baud rate - Divisor Latch High Byte */

outportb(PORT1 + 3 , 0x03); /* 8 Bits, No Parity, 1 Stop Bit */

outportb(PORT1 + 2 , 0xC7); /* FIFO Control Register */

outportb(PORT1 + 4 , 0x0B); /* Turn o.n DTR, RTS, and OUT2 */

do {c = inportb(PORT1 + 5);

if (c & 1)

{

ch[i] = inportb(PORT1)-48;

a=inportb(PORT1);

a=inportb(PORT1);

i=i++;

if(i==2)

{

i=0;

drawline(ch);

ch[2]=ch[0];

ch[3]=ch[1];

}

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delay(50);

}

}while(!kbhit());

/*ch[0]=10;

ch[1]=10;

ch[2]=200;

ch[3]=200;

drawline(ch);getch();

*/

}

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Bascom codes:

$regfile = "m16def.dat"

$crystal = 8000000

$baud = 9600

$prog &HFF , &HC4 , &HD9 , &H00

Config Lcd = 16 * 2

Config Porta = Input

Config Portb = Output

Config Portd = Input

Config Portc = Input

Config Lcdpin = Pin , Db4 = Portb.4 , Db5 = Portl = B.5 , Db6 =

Portb.6 , Db7 = Portb.7 , E = Portb.3 , Rs = Portb.2

Config Adc = Single , Prescaler = Auto , Reference = Avcc

Config Timer1 = Pwm , Pwm = 8 , Prescale = 1 , Compare A Pwm = Clear

Down , Compare B Pwm = Clear Down

Dim X As Integer

Dim Y As Integer

Dim Flag As Integer

Start Adc

Start Timer1

Cls

Lcd "hello8"

If Pind = 0 Or Pina = 0 Then

Cls

Else

X = 3

Y = 2

Print X

Print Y'End If

End

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CHAPTER

5Application of Serial Port (Touchpad):

Snapshot 5.1 : Assembly Board containg Microcontroller.

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Snapshot 5.2 : Touchpad Board showing fixed Laser and LDR

Snapshot 5.3: Connection between touchpad board and development board containing

microcontroller

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TOUCHPAD

CONTAINING

LASERS AND LDR

DEVELOPMENTBOARD

Microcontroller

Ports

CPU

Containing

SERIAL PORT ANDUART

Computer

Screen

Block

Diagram


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References:

1. http://madan.wordpress.com/parallel-port/

2. Jan Axelson, Programming, Interfacing & Using the Pcs Parallel Port, 4th edition,

USA,2000

3. http://www.robosapiensindia.com/resources/Robosapiens%20ATMEGA

%208%20Development%20Board.pdf

4. Barry.B.Brey, Intel. Microprocessors 8086-8088,4th ed,Prentice Hall Inc ,PP 412-419 ,

1997

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http://madan.wordpress.com/parallel-port/http://www.robosapiensindia.com/resources/Robosapiens%20ATMEGA%208%20Development%20Board.pdfhttp://www.robosapiensindia.com/resources/Robosapiens%20ATMEGA%208%20Development%20Board.pdfhttp://madan.wordpress.com/parallel-port/http://www.robosapiensindia.com/resources/Robosapiens%20ATMEGA%208%20Development%20Board.pdfhttp://www.robosapiensindia.com/resources/Robosapiens%20ATMEGA%208%20Development%20Board.pdf

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