ARM34
DATA TRANSFER BETWEEN PC AND LPC2148 CONTROLLER USING
OPTICAL COMMUNICATION
Title of the project
:
Data transfer between PC and LPC2148 controller using optical
Communication.
Domain
:
Embedded Systems Design, optical communication.
Software
:
Embedded C, Keil, Flash magic
Microcontroller
:
LPC2148 controller
Power Supply
:
+9V
Communication Device:
Fiber optic cable
Display Device
:
PC
Crystal
:
12MHz
Applications
:
Telecommunication, electrical communication,
Aerospace applications
Developed By
:
M/S Wine Yard Technologies
Phone
:
040-6464 6363
Website
:
www.WineYard.in
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
TECHNICAL SPECIFICATION
ARM34
ABSTRACT:
Fiber-optic communication is a method of transmitting information from one place to
another
by
sending
an electromagnetic carrier
pulses
of light through
wave that
an optical
is modulated to
carry
fiber.
The
information.
light
forms
Because
of
its advantages over electrical transmission, optical fibers have largely replaced copper wire
fiber-optics involves the following basic steps: Creating the optical signal involving the use of a
transmitter, relaying the signal along the fiber, ensuring that the signal does not become too
distorted or weak, receiving the optical signal, and converting it into an electrical signal.
This project uses LPC2148 as its controller .Here data transfer between PC to LPC2148
controller using fiber optic communication is used in varied applications. MAX 232 is used to
convert RS 232 logic to TTL logic and then an optical transmitter circuit is used to transmit data
via fiber optic cable. The optical transmitter circuit has a LED which is matched as far the cable
and MAX232 is concerned with the PC. At the receiver an optical receiver circuit is used which
receives data using a photo diode and a MAX232 again to convert TTL logic to RS 232 for the
serial port at the controller(LPC2148) end.
The desired baud rate can be set using the program. For transmitting data the program is
executed once and whatever is present at the serial port is sent to the LPC2148 via the fiber optic
cable. At the receiver the program is executed to receive data on the 16X2 LCD. Data transfer is
the need of today’s world. Most of people can use internet for this. But presently it would be
time consuming. One can implement data transfer using wireless medium. But then it will be a
costly affair. The need, therefore, is felt for fiber optic communication which is cheaper and
more suitable for the task. It is cheaper than wireless medium and is prone to lesser loss as
compared to wireless medium.
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
communications in core networks in the developed world. The process of communicating using
ARM34
This project can be used to chat between PC and LPC2148. It can help transfer data at the
desired speed between PC and LPC2148 using fiber optic. If we expand further, a network of
controllers can be connected as it is observed in the cable net available today. The conventional
LAN cables can be replaced by fiber optic cables which can provide much higher speeds and
also larger information Carrying capacity. Fiber optics has their own advantages; larger
The LPC2148 are based on a 16/32 bit ARM7TDMI-S™ CPU with real-time emulation
and embedded trace support, together with 128/512 kilobytes of embedded high speed flash
memory. A 128-bit wide memory interface and 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 their
compact 64 pin package, low power consumption, various 32-bit timers, 4- channel 10-bit ADC,
USB PORT,PWM channels and 46 GPIO lines with up to 9 external interrupt pins these
microcontrollers are particularly suitable for industrial control, medical systems, access control
and point-of-sale. With a wide range of serial communications interfaces, they are also very well
suited for communication gateways, protocol converters and embedded soft modems as well as
many other general-purpose applications.
This project uses two power supplies, one is regulated 5V for modules and other one is
3.3V for LPC2148. 7805 three terminal voltage regulator is used for voltage regulation. Bridge
type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down
transformer.
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
bandwidth, high speeds etc.
ARM34
Block Diagram:
PC
MAX 232
Fiber optic
Transmitter cable
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
Transmitter:
ARM34
Receiver:
P
C
Fiber optic
cable receiver
MAX
232
U
A
R
T
2
16X2 LCD
1
4
8
Step
Dow
n T/F
Bridge
Rectifier
Filter
Circuit
Regulator
Power supply to all sections
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
L
ARM34

Less Expensive

Thinner

Higher Carrying Capacity

Less signal degradation

Low Power

Light weight

Flexible

Non-flammable
Applications:

Telecommunication

Transmission of voice, data, or video over distances of less than a meter to hundreds of
kilometers, using one of a few standard fiber designs in one of several cable designs.

Smart highways with intelligent traffic lights

Automated tollbooths

Biomedical industry

Telemedicine

Space, military, automotive, and the industrial sector.
Abstract Prepared By
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040-6464 6363, 6625 6695, 888 5555 212
Advantages: