usnes-gpio - RPi SNES controller driver

Copyright (C) 2014-2015 Drew Thoreson

About

usnes is a driver for the Super Nintendo controller, connected over GPIO on the Raspberry Pi. It uses the Linux uinput interface to emulate a USB input device from user space. usnes will work with unmodified SNES controllers, provided you are able to connect them to the Pi's GPIO pins.

Pinout

Below is the pinout for the SNES controller (copied from http:/www.gamefaqs.com/snes/916396-super-nintendo/faqs/5395). You will need to connect the clock, latch and data pins on the controller to GPIO pins on the Pi, and tell the daemon about the mapping. This can be done by editing the controller array in config.h.

,------------------------------.
| (1) (2) (3) (4) | (5) (6) (7) )
'------------------------------`

Pin    Description    Color of wire in cable
---    -----------    ----------------------
1      +5v            White
2      Data Clock     Yellow
3      Data Latch     Orange
4      Serial Data    Red
5      ?              No wire
6      ?              No wire
7      Ground         Brown

NOTE: I have had success driving controllers at 3.3v, but as always YMMV.

Do not connect pin 1 to 5v unless you know what you are doing. You may break your Pi. I take no responsibility for what happens.

Configuration

By default, usnes emulates a single controller with the following button/key mapping:

SNES BUTTON    KEY
-----------    ---
A              a
B              b
X              x
Y              y
L              l
R              r
D-Pad Up       Up
D-Pad Down     Down
D-Pad Left     Left
D-Pad Right    Right
Start          Enter
Select         Escape

This can be changed by editing the controller array in config.h prior to compiling.

Build/Install

The bcm2835 library is a dependency. It should be installed prior to building.

$ make
# make install

Running

# usnes

Git Repository

https://github.com/drewt/usnes-gpio

$ git clone https://github.com/drewt/usnes-gpio