1. Team 9 - Scribacious Rabble
Software Design
William Hess
Paul Rosswurm
Mitch Erdbruegger
Ben Kobin 1

2. Project Description Adaptation of the board game SCRABBLE®
Maintains the traditional physical tile interface...
augmented by ..
Sensing tile location and value
Automatically calculating and displaying scores
Maintaining player profiles
Validating words in the event of a 'challenge'
Exposing game stats over an external interface 2

3. PSSCs
An ability to sense the presence and identity of a tile placed on the board.
An ability to record game specific metrics for a set of player profiles.
An ability to use a standard dictionary to allow a player to challenge the validity of the last word played.
An ability to display game relevant information to each player and allow one user to input game settings.
An ability to communicate game statistics over an external interface. 3

4. Block Diagram 4

5. Interfaces SPI (x4) Input Capture (x15) LCD
Micro SD (FAT 16 file system)
4-wire mode
Input Capture (x15)
Simple Capture Mode
USB

6. Considerations Main program will be flag-driven Memory Considerations
Setup, End Game, USB Transfer
Piece Detection: Challenge/End Turn inputs
Memory Considerations
24 kB Program Memory
170 kB Data Memory
Variables
LCD Buffers (1kB per)
gameboard (215 bytes)

7. Code Hierarchy

8. Game Flow startGame(): Input player names
Pseudo-random starting player
gamePlay() loop:
Check player’s skip value
(if skipped, decrement and goto nextplayer)
While piece not on board and End of Turn not pressed
Check Challenge Button – goto challenge()
commit last play
while End of Turn not Pressed
Continuous piece detection using input capture
update player score
put last played word & location in buffer
player = nextPlayer
gameEnd():
Calculate final scores
Read player data from SD and write new updated stats
Display winner and career stats
challenge()
search dictionary on sd for word(s) in buffer
remove player’s last score or increment challenger’s skip value

9. Code Progress SPI initialize(), sendByte(), getByte() Working LCD
initialize(), writeLine(), invertLine()
FileSystem
openFile(), readFile(), writeFile()
Working,
Refining SD
Working using Library,
USB
Adapting Library
Input Caputure Logic
Pseudocode
Main
gameSetup(), gamePlay(), gameEnd()
transferData()

10. Questions?