Transcript Software Narrative - Purdue College of Engineering

(Left to Right)
Matt Finn
Brian Crone
Samuel Oshin
Yonatan Feleke
 Future
Cash Register
• The future cash register is a point of sale box
designed to make transactions completely
wireless through the use of the NFC
technologies. It will accept payments and send
receipts through NFC. It will also aide the
cashier with ordering through voice recognition

Ability to customize the inventory via the user
interface (Atom)

Ability to communicate with an NFC device
(dSPIC30)

Ability to interface with an IR sensor to detect the
presence of a user (dSPIC30)

Ability to display prompts to user through LCD
(dSPIC30)

Ability to aid cashier by highlighting menu choices
while placing order with voice recognition (Atom)

dsPIC30F5011
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Architecture: 16-bit
CPU Speed (MIPS): 30
Memory Type: Flash
Program Memory (KB): 66
RAM Bytes: 4,096
Operating Voltage Range: (V) 2.5 to
5.5
I/O Pins: 52
Pin Count: 64
Internal Oscillator: 7.37 MHz, 512
kHz
Digital Communication
Peripherals: 2-UART, 2-SPI, 1-I2C
Analog Peripherals 1-A/D 16x12bit @ 200(ksps)
Timers 5 x 16-bit 2 x 32-bit
 Split
into 3 parts
• Atom
• Microcontroller
• Tester
 Devloped
in C#
 6 Modules
• GUI
• Restaurant/Menu class structure
• Voice Recognition
• Serial communication with micro
• Cryptography/Security
• Database backup
 GUI
• Ordering screen
• Checkout/payment screen
• Admin screen
 Restaurant/Menu Class structure
• Top level class: contains inventory, restaurant info,
and admin password
• Inventory class: contains lists of menu items along
with lists of combo items
• Menu Item class: contains item name, price,
description, keywords, possibly picture
• Combo Item class: contains list of menu items
included in combo, name, keyword, and price
 Voice Recognition
• Uses System.Speech.Recognition namespace
 Serial Communication
• Uses SerialPort class from System.IO.Ports
namespace
 Cryptography/Security
• Uses System.Security.Cryptography namespace
• Possibly AES
• Will encrypt before storing onto hard drive
 Database - managed on SQL server
 Micro
Controller:
• Poll infrared
 To identify if customer is near
• Send a “Go” signal
 Through UART to COM port.
• Wait for “Pay” signal
• Send to LCD
 Place NFC close to red circle
 Micro
Controller
• Poll NFC until not empty
 Read through SPI
• Send a “Pay” Signal
 With Credit Card Credentials
• Wait for “Receipt” Signal
 Store Receipt to Ram
• Write to NFC FIFO Manager
 Send Through SPI to NFC
Block Diagram
Part 1
Block Diagram
Part 2
 Android
SDK
• Android App in development
• Will be using an NFC Enabled Device to test
Be Gentle