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2/28/2006 CAPSTONE Spring '06 CDR 1
Team Cornerstone
Michael Brogdon
Enrique Conde
Chad Gill
Doug Schuyler
2/28/2006 CAPSTONE Spring '06 CDR 2
Project DescriptionProject Description
The system is made up of three different modules: • Product
• Two different types of identification• Passive RF ID• Bar Code
• Shopping Cart• Computing system for product identification and real time
price update• LCD, displaying product description and total price• RF link to communicate with checkout counter
• Checkout Counter• RF link to communicate with shopping cart• Product Database
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PurposePurpose
• Facilitate people’s shopping• Real time price update• Audible (multilanguage) description (price, product name, etc.)
• Eliminate long/tedious lines • Uploading final price to checkout counter, so that customer only
needs to pay (no need to scan everything)• Possible extension
• Advertisement opportunities• Multilanguage Display
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Shopping Cart DiagramShopping Cart Diagram
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Checkout Counter DiagramCheckout Counter Diagram
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2/28/2006 CAPSTONE Spring '06 CDR 8
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Timing Diagram HC12Timing Diagram HC12
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Timing out of CPLDTiming out of CPLD
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SoftwareSoftware
Interrupt Handlers– Reads Ports PK0-PK2 for interrupt vector address– Buffers data from data bus.– Asserts line connected to port PK3 when completed
Display– Input: Pointer to Character data– Output: Character display to LCD
Audio– Input: Address to Sound Sequence– Output: Address on data bus to Digitalker
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SoftwareSoftware
Transmit– Input: Pointer to Data to send– Output: Data on SPI bus to RF link.
Receive– Input: Data from RF link on SPI bus– Output: Data to buffer
Idle– Input: N/A– Output: N/A
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Parts ListParts List
• 3 HC12 family Micro controllers. (Obtained)
• 2 LCD’s (Obtained)• 1 Keypad (Obtained)• 2 Proto-boards (Obtained)• 4 32Kx8 bit SRAM (Obtained)• 4 512Kx8 bit Flash Memory (Obtained)• 2 RF Transmitters (Obtained)• 2 RF Receivers (Obtained)
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Parts List continuedParts List continued
• 1 44-pin Xilinx CPLD XC9536 (Obtained)• 1 84-pin Xilinx CPLD XC95108 (Obtained)• 1 Digit-talker kit (Obtained)• Multiple Miscellaneous CMOS IC’s
(Obtained)• Miscellaneous Power Supply parts
(Obtained)
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Parts List continuedParts List continued
• 1 RFID Reader/Writer (Not obtained yet)• 5 RFID Tags (Not obtained yet)• 1 12-Volt battery (Not obtained yet)
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Schedule Schedule
• CDR• Have every part we need ordered or received
(Completed)• Startup Code for Microcontrollers (Completed)• Product ID with Bar code complete (Completed)• LCD test code (Completed)• Keypad test code (Completed)• Bar code test code (Completed)• Audio test code (Completed)• Initial design of PCB completed and start
manufacturing (Design and proto-board completed)
2/28/2006 CAPSTONE Spring '06 CDR 18
Schedule ContinuedSchedule Continued
• Milestone I• Shopping cart (itself) complete• Revision of PCB design• Product RF ID complete• Partial Integration• Communication links up and running• Hardware Drivers ready
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Schedule ContinuedSchedule Continued
• Milestone II• Final PCBs complete with parts installed
• Shopping Cart complete with wiring and power supply
• Checkout complete
• Final testing and debug begins
2/28/2006 CAPSTONE Spring '06 CDR 20
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Labor and ResponsibilitiesLabor and Responsibilities
• Michael Brogdon: Firmware and Software Development
• Enrique Conde: Firmware and Software Development
• Chad Gill: Hardware layout and design
• Douglas Schuyler: Hardware layout and design, cart design
