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Rfid Accessing System Using Arm Processor

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RFID ACCESSING SYSTEM USING ARM PROCESSOR By – G. Rajesh (07811A0442) G. Prudhvi Raju (07811A0443) K. Sunil Varma (07811A0457)
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Page 1: Rfid Accessing System Using Arm Processor

RFID ACCESSING SYSTEM USING ARM PROCESSOR

By –

G. Rajesh

(07811A0442)

G. Prudhvi Raju

(07811A0443)

K. Sunil Varma

(07811A0457)

E. Sandeep Kumar

(07811A0432)

Page 2: Rfid Accessing System Using Arm Processor

CONTENTS Embedded systems

Microcontroller vs Microprocessor

Microcontrollers for Embedded Systems

ARM processor

Features of ARM processor

LPC2119/LPC2129

Features of LPC2119/LPC2129

Liquid Crystal Display (LCD)

RFID Reader

Power Supply

Advantages& Disadvantages

Conclusion

References

Page 3: Rfid Accessing System Using Arm Processor

EMBEDDED SYSTEMS We are living in the Embedded World. You are

surrounded with many embedded products and your

daily life largely depends on the proper functioning of

these gadgets.

Embedded controllers carryout a specific work for

which they are designed. Most of the time, engineers

design these embedded controllers with a specific goal

in mind. So these controllers cannot be used in any

other place.

Theoretically, an embedded controller is a

combination of a piece of microprocessor based

hardware and the suitable software to undertake a

specific task.

Page 4: Rfid Accessing System Using Arm Processor

MICROCONTROLLER VS MICROPROCESSOR

Microprocessors contain no RAM, no ROM, and no I/O

ports on the chip itself. For this reason, they are commonly

referred to as general-purpose Microprocessors.

A Microcontroller has a CPU (a microprocessor) in

addition to a fixed amount of RAM, ROM, I/O ports, and a

timer all on a single chip. In other words, the processor,

the RAM, ROM, I/O ports and the timer are all embedded

together on one chip; therefore, the designer cannot add

any external memory, I/O ports, or timer to it.

Page 5: Rfid Accessing System Using Arm Processor

MICROCONTROLLERS FOR EMBEDDED SYSTEMS

An embedded system product uses a microprocessor

(or Microcontroller) to do one task only.

In an Embedded system, there is only one application

software that is typically burned into ROM

Each one of the output peripherals has a

Microcontroller inside it that performs only one task.

For example, inside every mouse there is a

Microcontroller to perform the task of finding the mouse

position and sending it to the PC.

Page 6: Rfid Accessing System Using Arm Processor

ARM PROCESSOR

The ARM processor core is a key component of many

successful 32-bit embedded systems.

ARM cores are widely used in mobile phones,

handheld organizers, and a multitude of other everyday

portable consumer devices.

Over one billion ARM processors had been shipped

worldwide .

Page 7: Rfid Accessing System Using Arm Processor
Page 8: Rfid Accessing System Using Arm Processor

FEATURES OF ARM PROCESSOR

The ARM processor, like all RISC processors, uses a

load-store architecture. This means it has two instruction

types for transferring data in and out of the processor.

Since the ARM core is a 32-bit processor, most

instructions treat the registers as holding signed or

unsigned 32-bit values.

The ARM core uses the cpsr to monitor and control

internal operations. The cpsr is a dedicated 32-bit

register and resides in the register file.

The processor mode determines which registers are

active and the access rights to the cpsr register itself.

Page 9: Rfid Accessing System Using Arm Processor

There are seven processor modes in total: six

privileged modes (abort, fast interrupt request, interrupt

request, supervisor, system, and undefined) and one

nonprivileged mode (user).

The state of the core determines which instruction set

is being executed. There are three instruction sets: ARM,

Thumb, and Jazelle.

The ARM instruction set is only active when the

processor is in ARM state.

To execute Java bytecodes, you require the Jazelle

technology plus a specially modified version of the Java

virtual machine

Interrupt masks are used to stop specific interrupt

requests from interrupting the processor.

Page 10: Rfid Accessing System Using Arm Processor

LPC2119/LPC2129 The LPC2119/LPC2129 are based on a 16/32 bit

ARM7TDMI-S™ CPU with real-time emulation and

embedded trace support, together with 128/256 kilobytes

(kB) of embedded high speed flash memory.

A 128-bit wide memory interface and a unique

accelerator architecture enable 32-bit code execution at

maximum clock rate. For critical code size applications,

the alternative 16-bit Thumb® Mode reduces code by

more than 30 % with minimal performance penalty.

With a wide range of additional serial communications

interfaces, they are also suited for communication

gateways and protocol converters as well as many other

general-purpose applications.

Page 11: Rfid Accessing System Using Arm Processor

FEATURES OF LPC2119/LPC2129 16/32-bit ARM7TDMI-S microcontroller in a tiny

LQFP64 package.

16 kB on-chip Static RAM.

128/256 kB on-chip Flash Program Memory. 128-bit

wide interface/accelerator enables high speed 60 MHz

operation.

In-System Programming (ISP) and In-Application

Programming (IAP) via on-chip boot-loader software.

Flash programming takes 1 ms per 512 byte line.

Single sector or full chip erase takes 400ms.

Page 12: Rfid Accessing System Using Arm Processor

Embedded ICE-RT interface enables breakpoints and watch points. Interrupt service routines can continue to execute while the foreground task is debugged with the on-chip RealMonitor™ software. Two 32-bit timers (with four capture and four compare channels), PWM unit (six outputs), Real Time Clock and Watchdog. Up to forty-six 5 V tolerant general purpose I/O pins. Up to nine edge or level sensitive external interrupt pins available. On-chip crystal oscillator with an operating range of 1 MHz to 30MHz. Dual power supply:• CPU operating voltage range of 1.65 V to 1.95 V

(1.8 V -0.15 V).• I/O power supply range of 3.0 V to 3.6 V (3.3 V -

10 %) with 5 V tolerant I/O pads.

Page 13: Rfid Accessing System Using Arm Processor

LIQUID CRSYTAL DISPLAY The liquid crystal display driver circuit consists of 16

common signal drivers and 40 segment signal drivers.

When the character font and number of lines are selected

by a program, the required common signal drivers

automatically output drive waveforms, while the other

common signal drivers continue to output non-selection

waveforms.

The display contains two internal byte-wide registers, one

for commands (RS=0) and the second for characters to be

displayed(RS=1).It also contains a user-programmed RAM

area (the character RAM) that can be programmed to generate

any desired character that can be formed using a dot matrix

Page 14: Rfid Accessing System Using Arm Processor

RFID READER

The RFID Proximity OEM Reader Module has a

built-in antenna in minimized form factor.

This LF reader module with an internal or an

external antenna facilitates communication with

Read-Only transponders—type UNIQUE or TK5530

via the air interface.

Reads the Same Data in Tag (Last 8 Digits )

Input Power Supply DC 12volts

LED/Beeper indicates tag reading

operation

Compact size and cost-effective

Page 15: Rfid Accessing System Using Arm Processor
Page 16: Rfid Accessing System Using Arm Processor

POWER SUPPLY DESIGN

Voltage Regulator is used to provide a

constant voltage.

When the current in the regulator gets

heated up so a heat sink is used which reduces

the heat and saves the regulator from damage.

Two diodes are used as a rectifier to convert

pulsating DC to constant DC.

Page 17: Rfid Accessing System Using Arm Processor

ADVANTAGES Provides a security system which needs no

manpower to look after.

Very less maintenance cost.

disadvantages

Anyone can enter the secured room with a lost

RFID card.

High initial cost.

Page 18: Rfid Accessing System Using Arm Processor

CONCLUSION

Security is a primary concern in our day-to-day life. Everyone wants to be

as much secure as possible. An access control for doors forms a vital link in a security chain. The RFID and Microcontroller based security system

can be adopted at various applications and are very useful in

providing an excellent security system.

Page 19: Rfid Accessing System Using Arm Processor

REFERENCES

‘The 8051 Microcontroller and Embedded Systems’

by Muhammad Ali Mazidi.

‘ARM system developer Guide’ by Andrew N. Sloss.

www.atmel.com

www.analogicgroup.com

www.philips.com

www.nxp.com

www.gsmworld.com

Page 20: Rfid Accessing System Using Arm Processor

Thank You!!


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