The document describes a device that allows for data transfer between USB drives without the need for a computer. The device contains a microcontroller, USB host controller, LCD screen, keypad, and power supply. It has three modules - a user interface controller, file system controller, and USB controller. The user interface controller manages the LCD and navigation. The file system controller handles file management and access to the FAT file system. The USB controller interfaces with the USB drives and handles data transfer. The aim is to develop an intelligent, small, and portable device for backup and data transfer between digital devices.

1. PENDRIVE TO PENDRIVE
DATA TRANSFER WITHOUT
PC
SUBMITTED BY
K.VISHNUPRASANNA
108Z1A0490

2. INTRODUCTION
 The project’s aim is devoloping an intelligent data transfer system
which doesn’t require any support from pc or laptop for data
transferring
 Carrying a computer or a laptop just for the sake of data transfer is not
affordable these days in the age when people want all devices to be
handy. Our aim is to build a small and handy device to transfer data
from one USB Flash device to another.
 This paper deal with implementation of 3 modules and testing of
transfer rates of device

3. Universal Serial Bus (USB)
 USB was initially designed to be an interface
for communicating with many types of
peripherals without the limits and frustrations
of older interfaces.
 Every recent PC includes USB ports that can
connect to standard peripherals such as
keyboards, mice, scanners, cameras, printers,
and storage drives.
 It is a very useful protocol designed for a
computer to communicate with almost any
type of peripheral.

4. General block diagram &
components

5.  The device having following
components:
1. 1.Micro controller
2. 2.USB Host Controller
3. 3.USB storage devices (source and
destination)
4. 4.LCD screen display(20*4)
5. 5.four scroll and two multi function
buttons(keypad)
6. 6.Regulated power supply or bttery9v
componen
ts:

6. • Has 512KB Flash Memory and 4KB Static RAM internal MCU
• Use 20.00MHz Crystal, so MCU can process data with the maximum high
speed at 60MHz.
• Has RTC Circuit (Real Time Clock) with 32.768 KHz XTAL and Battery
Backup.
• Has circuit to connect for Real Time Debugging.
ARM7 (LPC 2138)

7. USB Host controller
•Recognizes the input peripheral as host or slave according to firmware loaded
in it.
•Physically interfaces with the USB flash drives and is responsible for converting
raw data and information to their proper encoding/decoding as specified by the
USB technical specifications
•Handles all types of transfer between source destinations
•A dedicated USB Host Controller from Vinculum - VNC1L found to be best
suited for this project.

8. RAM
Shift
Register
Driver
CPU
1 0 1 0 1
SENDING DATA
-Data will be sent out serially
-The microcontroller will be
programmed to implement a
shift register function.

9. Reciever
DAC
1 0 1 0 1
RECIEVING DATA
Reciever Circuit
Comparator
Used to interpret data in
Real time.
Digital-to-Analog Converter
Allows user to set the threshold
on the comparator.

10. USB storage devices
USB stands for Universal Serial Bus.
These are source and target Devices.
They will be connected to the USB Host Controller via the USB
interface.
Before making the devices available for use, the Operating system
formats the device with a file format like FAT-8, FAT-16, FAT-32,
NTFS.
Data encrypted with all above formats can be accessed with an
efficient Firmware on the USB Host Controller.

11. Device with LCD screen

12. Keypad:
The device functional
keypad consists of 6
buttons they are:
 2multi function buttons
and
4 scroll buttons.
Battery:
It works on the 9v battery.

13. The controlling device of the whole project
is a Microcontroller. The Microcontroller reads
the data from storage device and makes it
into the suitable format to write it into pen
drive.
When user presses copy button all the data
from storage device is copied to pen drive as
back up storage.
Also, the system has provision of formatting the
Storage Device.
operation

14. 1.User interface controller
module
This module is responsible for obtaining
user input anddisplaying user requested
information through an LCD.
It consists ofthree submodules
a. LCD controller
b. The LCD Controller interfacesthe
LCD to the main hardware system
c. Navigation
d. The Navigation submodule is the
input handling hardware of the
system
e. Screen display formatter
f. The Screen Display Formatter is
responsible forarranging and ordering
the contents of the LCD screen

15. 2. file system controller
module
The File System Controller is responsible
for all file management processes and
FAT file system access for the system.
File Manager
The File Manager Submodule is
responsible for all file management
functions/features that are available in the
system.
FAT32/16/12 Controller
The FAT32/16/12 Controller mediates
between the FileManager submodule and
the USB Controller Module.

16. 3.USB controller module
This module accepts the commands to either
read or write onto a USB flash drive as
requested by the File System
a. Controller Module
b. The submodule physically interfaces with
the USB flash drives and is responsible for
converting raw data.
c. Packet Handler
d. The Packet Handler submodule handles all
packet generation and interpretation.
e. Error Bit Handling
f. The Error Bit Handling is responsible for
adding error-checking bits to the data
about to be sent.
g. Start Up
h. It deals with the detection of the USB
devices attached to the system.

17. This system is portable and it finds to be very useful for
creating backup or transferring data from Digital cameras,
mobile phones, laptops, MP3players and video game
consoles into pen drive.
APPLICATIONS

18.  Transferring the data through USB in today’s
scenario is the most common task. But the
problem is that for transferring the data to a
personal computer or laptop is difficult if u don’t
have any of them. Therefore we came up with an
easy and affordable device which can transfer the
data between two USB data drives without the
help of PC or laptop.
 Another advantage of this device is that it is
battery operated so there is no need of power
supply connection every time and data transfer
can take place at any place.
CONCLUSION

19. Add USB host capability to embedded
products.
Using Bluetooth in our device, we can
connect with any Bluetooth enable devices
making the data transfer wireless.
Keypad and LCD can be replaced by touch
screens which can make human work
easier by drag and drop method.
FUTURE SCOPE

20. 1. J. Axelson, “USB COMPLETE Second
Edition,” Madison, WI: wakeview Research
LLC, 2004
2. Cypress Semiconductor Corporation, “OTG-
BIOS User Manual Version 1.2,” Cypress
Semiconductor Corporation, California, 2003
3. www.slidshare.com
4.
http://www.usbflashdrive.org/usbfd_overview.ht
ml
REFERENCES

21. Thank you!

22. Queries?