Embedded systems basics 8051 - project approach

MELVIN FRANCISSUDIPTA DEB

Seminar on “Industrial Requirements for

ECE Engineers and Embedded Systems overview “

Why did you join engineering ?

Why you choose electronics ?

a.) parents b.)friends

c.)teachers

Am I in correct course ?

Electronics engineers employability?

What do companies want ?

What do they expect from you ?

What we really do ?

What we think ?

What we have missed?

originality

We are always AFRAID ?

What companies want ?

Electronics in INDIA ?

LEADING SEMICONDUCTOR COMPANIES

• Intel • Samsung • Qualcomm• Texas instruments• Toshiba

What does nation needs from you ?

EntrepreneurshipIn electronics

Vacuum in electronics products

Electronic products

• Tubelight chokes• Fan regulators• Cfl lamps• Inverters• Spike busters• Adapters• Stabilizers

Electronic products

• Bugler alarm• Automatic water flow management• Irrigation • Laptop mouse – cooler – webcam• Security enhancements • Medical applications

To do all this YOU must become INDUSTRY READY ENGINEER

HOW TO START A PROJECT

HOW TO INVENT AN INVENTION

PROJECT PROCESS

1. GOOGLE2. LITERATURE SURVEY 3. BASE PAPERS4. BLOCK DIAGRAM 5. PAPER READY CIRCUIT DESIGN 6. SIMULATION 7. HARDWARE IMPLEMENTATION

ALMOST ALL REAL TIME PROJECTS ARE EMBEDDED PROJECTS

• PROCESSOR OR CONTROLLER• SPECIFICATIONS - no. of input pins , no. of

output pins, no. of serial communication • SENSOR UNITS / PERIPHERALS • PROGRAMMING • SERIAL COMMUNICATION • SOFTWARE BACKEND

CHOOSING PROCESSORS

• 8085• 8086• 8051• ATMEL• PIC• AVR• ARM • MSP430

CHOOSING SENSORS

TEMPERATURE – PRESSURE – ACCELEROMETER – IR SENSORS

CHOOSING THEM ACCORDING TO YOUR PROCESSOR

COST EFFECTIVE

SPEED / RANGE / RELAIABLITY /WEIGHT

TYPICAL PROJECT BATCH

• ONE DOES ALL THE WORK • ONE JUST DOES THE TYPING WORK• ONE DOESN’T EVEN KNOWS WHATS

HAPPENING IN THE PROJECT• THE LAST ONE DISSAPPEARS AND COMES

ONLY ON THE DAY OF SUBMISSION

MICROCONTROLLER SENSORS PERIPHERALS

SIMPLE BLOCK

LET US START 8051

CPU MEMORY ADDRESS

REGISTER AOR

PORTS

REGISTER BOR

PORTS

MEMORY4100410141024103410441054106410741084109410A

REGISTERS

• ACCUMULATOR , REGISTER B • R0 – R7 REGISTERS• DPTR – POINTERS

INSTRUCTION SET

• ARITHMATIC • LOGICAL • MOVEMENT• ROTATIONS • SPECIAL FUNCTION and COMMANDS

8051 PROGRAMS• Basic data manipulation and movement• Internal Modules

• Timer/Counter• UART• ADC

• Interrupts• Interfacing

• LCD• Keypad• ………

• ……..

UART – Serial Communication

• TMOD• TCON• SCON• SBUF• TXD• RXD• ….

Send me an ‘A’#include "reg_51.h"char uart_data;void main (void) {

SCON = 0x50; /* uart in mode 1 (8 bit), REN=1 */TMOD = TMOD | 0x20 ; /* Timer 1 in mode 2 */TH1 = 0xFD; /* 9600 Bds at 11.059MHz */TL1 = 0xFD; /* 9600 Bds at 11.059MHz */ES = 1; /* Enable serial interrupt */EA = 1; /* Enable global interrupt */TR1 = 1; /* Timer 1 run */

while(1); /* endless */}

void serial_IT(void) interrupt 4 {

if (RI == 1) { /* if reception occur */ RI = 0; /* clear reception flag for next reception */ uart_data = SBUF; /* Read receive data */ SBUF = uart_data; /* Send back same data on uart*/}else TI = 0; /* if emission occur */ /* clear emission flag for next emission*/

}

INTERRUPTS

Example: Timer1 interrupt (when TF1 is set)

Example: Ext0 interrupt ( when signal is given to ext0 pin)

EMBD-C PROGRAM

Simple

?

Do you want to learn PIC

• What are the basic things you need to start using PIC

• ?

• ?

• ?

DEMO

SCRATCH TO PROJECT

PROJECT PROCESS

1. GOOGLE2. LITERATURE SURVEY 3. BASE PAPERS4. BLOCK DIAGRAM 5. PAPER READY CIRCUIT DESIGN 6. SIMULATION 7. HARDWARE IMPLEMENTATION

Things to start your project ?

1.) bread board 2.) DVM3.) Soldering iron4.) dot board 5.) sensors , cables, components6.) processors / controllers

Will I get components for Free ?

Will I get components for Free ?

Ans : Yesssss….!!!!!!!

DESIGN CONTESTS

• TEXAS INSTRUMENTS• TORODOX• NATIONAL INSTRUMENTS• EFY• MAXIM• DEBMEGO TECHNOLOGIES

OUR WORKSHOPS

• HANDS ON KEIL IDE & PROTEUS• 80C51 @ 89C51 HANDS ON• PIC MICROCNTROLLER HANDS ON • ROBOTICS WORKSHOP • BUSINESS ELECTRONICS WORKSHOP• PCB DESIGNING & SOLDERING HANDS ON • WEB DEISGNING HANDS ON• WEB DEVELOPMENT HANDS ON • PHOTOSHOP AND AFTER AFFECTS

OUR ONLINE INTERNSHIPS

• WEB DEVELOPMENT

• PUBLIC RELATIONSHIP DEVELOPMENT

DMG STUDENT AMBASSADOR

JOIN WITH US TO CHANGE THE WORLD

[email protected]

YOUR FEEDBACK IS IMPORTANT TO US

MELVIN FRANCIS 9566-581-840

9442-464-851SUDIPTA DEB

Embedded systems basics 8051 - project approach

Engineering

Transcript of Embedded systems basics 8051 - project approach