SEVEN SEGMENT TEMPERATURE by Danish Group

DEPARTMENT OF INFORMATION AND COMMUNICATION TECHNOLOGY

SESSION DECEMBER 2016

MINI PROJECT REPORT

DEC5052 EMBEDDED SYSTEM APPLICATION

“SEVEN SEGMENT TEMPERATURE”

Prepared for: 

DR HJ HASNIM BIN HARUN

LECTURER of EMBEDDED SYSTEM APPLICATION JTMK

           

Prepared by:

NAMA PELAJAR	NOMBOR PENDAFTARAN	KELAS
Kosigan A/L Vadivelu	01DIP14F2044	EMSB
Muhammad Danish bin Rasali	01DIP14F2045	EMSB
Karthik a/l Veerakumar	01DNS15F1081	EMSB

Date: 22/03/2017

TABLE OF CONTENTS

BIL	TOPIC	PAGES
1.	1.0 INTRODUCTION	3
2.	2.0 DESIGN OF THE PROJECT	4
3.	3.0 DEVELOPMENT       3.1 HARDWARE,  SOFTWARE REQUIREMENT and COST       3.2 PROGRAMMING THE PIC	5 - 8
4.	4.0 DISCUSSION       4.1 ISSUES DURING PROJECT IMPLEMENTATION       4.2 INPUT WHOLE LEARNING	9
5.	5.0 CONCLUSION	9

1.0 INTRODUCTION

Ultimately we chose the seven segment temperature in the development of mini projects.  Seven Segment Temperature is a project that displays the temperature reading from the sensor LM35 to seven segment.

We can see the circuit for a temperature sensor using LM35 and temperature.  Accordingly the temperature monitor is printed on LM35 series.  Here we design a circuit where the temperature will be printed in five digit common cathode seven segment display.  The project involves the detection of hot or cold temperature readings such as water and air.

In summary this project involves a process in which an input where sensor is put something hot or cold objects and the output will produce a reading of the temperature of the items on the LCD will be displayed.

2.0 DESIGN OF THE PROJECT

3.0 DEVELOPMENT

       3.1 HARDWARE, SOFTWARE REQUIPMENT and COST

 

3.2 PROGRAMMING (CODING)

/*

Project: Seven Segment Temperature

Programmer: Danish,Kosigan,Karthik

Microcontroller (Crystal Frequency):

PIC16F877A (20MHz), PIC16F887 (20MHz), PIC16F1939 (Internal 32MHz)

PIC18F4520 (10MHz), PIC18F4550 (10MHz), PIC18F46K22 (Internal 16MHz)

Compiler: XC8 v1.35

*/

#define TIMER0

#define ADC

#define PB1                 PORTAbits.RA0

#define PB2                 PORTAbits.RA1

#define PB3                 PORTAbits.RA2

#define PB4                 PORTAbits.RA3

#if defined (_16F877A) || (_16F887)

    #define SEGMENT              PORTB            //abcdefg.

    #define DIGIT                      PORTD

#elif defined (_16F1939) || (_18F4520) || (_18F4550) || (_18F46K22)

    #define SEGMENT              LATB              //abcdefg.

    #define DIGIT                      LATD

#endif

#define PULSE0                      200

#define PULSE1                      10000

#define ZAIM

#include "LibraryHardware.h"

#include "LibraryPeripheral.h"

#include "LibraryMath.h"

static const char segment[]={

0b11111100,0b01100000,0b11011010,0b11110010,0b01100110,

0b10110110,0b10111110,0b11100000,0b11111110,0b11110110,

};

char count,digit[8];

unsigned int temperature;

static void interrupt isr(void)

{

if(TMR0IF==1){

    TMR0IF=0;

    TMR0=6;

    if(count<7) count++;

    else count=0;

    DIGIT=0;

    SEGMENT=digit[count];

    DIGIT=0b00000001<<count;

}

}

void setup()

{

initialize();

TRISA=0b00101111;

TRISB=0b00000000;

TRISC=0b00000000;

TRISD=0b00000000;

TRISE=0b00000000;

adc_init(4);

timer0(0);

enable_tmr0();

}

void loop()

{

temperature=map(adc_read(4),0,1023,0,5000); //10mV/deg C

digit[0]=0;

digit[1]=0b10011100;

digit[2]=0b11000110;

digit[3]=segment[temperature%10];

digit[4]=segment[(temperature/10)%10]|1;

digit[5]=segment[(temperature/100)%10];

digit[6]=0;

digit[7]=0;

delay(200);

4.0 DISCUSSION

       4.1 ISSUES DURING PROJECT IMPLEMENTATION

        i.            Requires power supply to ensure the success of the encoding process & recorded temperature value.

      ii.            The temperature of an input entered is not permanent and require a conducive environment while noting the temperature.

    iii.            To ensure the continuity of an equipment to connect one another is right and prudent to ensure the experiment goes well.

     iv.            There was a coding error cannot be on the road (run) and the error can be identified.

      4.2 INPUT WHOLE LEARNING

        i.            We can learn about the uses of materials contained in the 7-segment this temperature.

      ii.            We can see how the process occurs.

    iii.            Next we evaluate and record the temperature.

5.0 CONCLUSION

In conclusion we can learn a little about how to produce 7-segment temperature.  We thank the lecturers who helped to produce this work.