1. EE4214 Real-Time
Football Cup
REAL-TIME EMBEDDED SYSTEMS 2011

2. SERVER OVERVIEW
 Microblaze 0
 Draws the playing field and players
 Specials: 60Hz display updates, animation, double buffering
 DMA for quick drawing
 Microblaze 1
 Receives player initial positions, speed and direction from client
board
 Returns player positions to client board
 Simulates the game with physics
 Determine foul and goals from rules specified
 Send gamestate to co-processor for display

3. SERVER IMPLEMENTATION
 Microblaze 0
 TFT V-Sync
 Bitmap import
 GCC optimisation, Data-Cache
 Other optimisations
 Microblaze 1
 Serial send and receive interrupts to reduce load, with cyclic buffer
 Mutex locks for shared memory protection
 Timer interrupts with barrier implementation to wake up
communication and simulation thread at 25Hz (using semaphore)

4. CLIENT OVERVIEW
 1 Microblaze, two threads
 1 st thread to receive player, ball and game state information
from server
 2 nd thread calculates and uploads to server
 Sending and receiving at 25Hz

5. CLIENT IMPLEMENTATION
 Serial interrupt for receiving
 Hardware co-processor and implements strategy
 Timer at 25Hz frequency triggers interrupt and posts
semaphore

6. STRATEGY IMPLEMENTATION
 Tiered Strategy: Overall Team FSM (Attacking and Defending
Mode)
 Each player has its own FSM that determines the action that
the player should make
 Mark: Approach the closest enemy and stay close to him
 Possess: Dribble the ball upfield if it is within range of player
 Chase: Closest player chases after the ball
 Support: Move to the Best Supporting Position (determined by an
algorithm)
 Computationally intensive calculations handled by hardware
co-processor implemented in VHDL

7. ADDITIONAL FEATURES
 720p display using Atlys Spartan6 board
 With view panning (demonstration available)
 Hardware strategy calculation
 Calculates the best support position
 Able to handle computationally intensive strategies while keeping to
a strict 25Hz frequency

8. TESTING AND VERIFICATION
 Communications verified on Java Code
 PC-based controller to verify rules check and
movement