PlayStation Controller (PAD) Driver for Rust Embedded

The primary goal here is to support the DualShock 1/2 controllers as they're the most prevelent, but there are other fun control devices to try. Currently supported:

• [x] Original PlayStation digital mode
• [x] DualShock 1/2 analog sticks
• [x] DualShock 2 pressure sensitive buttons
• [x] JogCon
• [x] JogCon force feedback
• [x] NegCon
• [x] PSX Multitap (SCPH-1070)
• [ ] DualShock rumble
• [ ] Guitar Hero guitar
• [ ] Dual Analog
• [x] ~~DVD Remote (doesn't follow spec)~~

Notes for hacking status of these can be found in the 'research' folder.

Bibliography

• psxpad.html - Wiring, testing and bootstrapping game pad on Linux with SPI
• ps_eng.txt - Controller / Memory Card Protocols (pre-DualShock)
• Playstation 2 (Dual Shock) controller protocol notes - Command protocols
• psxpblib - Interfacing PlayStation controllers via the parallel port
• Simulated PS2 Controller for Autonomously playing Guitar Hero - SPI protocol captures