PlayStation Controller USB Interface

1
PlayStation Controller USB Interface

• Group Members of Rokken Like Dokken
• Frederick N. Genthner
• Patrick T. Phelan
• ECE 4180 Design Project
• Fall 2004
• James O. Hamblen

2
Introduction

• Our project implemented a PlayStation controller
  as a USB keyboard in Windows XP
• We interfaced the controller with the Devasys
  EZ-USB board
• We reprogrammed the Devasys board with USB HID
  firmware.

3
Controller Protocol
The controller communicates with its host using
five 8-bit serial transmissions
The data changes on the falling edge and is read
on the rising edge of the clock
The last two bytes contain the code for the
pressed buttons, each button assigned to a
specific bit
4
Controller USB board interface

• Port A (output) and B (input) on the Devasys
  board were connected to the controller
• The Devasys board sent CLOCK, COMMAND, and
  ATTENTION signals to the controller
• Controller button states were stored in memory

5
Controller Operation

• The default arrow buttons send numpad commands
  Pressing the START button toggles between numpad
  and arrow pad
• The action keys can be programmed to a number of
  different key codes holding the SELECT button
  advances the key code sent
• We wrote a simple Java program to be used for
  button calibration

6
Gameplay

• The action keys default to common Nethack
  commands the device can be used with any game
  that accepts keyboard commands

7
Demonstration
8
Schedule Comparison
Original Proposal
Actual Schedule
9
Questions ?