A non working GPIO gamepad with uinput

[fussoir1er]

Hello !

I'm trying to build an arcade cabinet with Piplay! (A raspbian based OS with emulators)
Nice to write, hard to do when you're a noob...
Well, I tried to wire a joystick and a few buttons to GPIOs and write a python script using Uinput to emulate a keyboard.
But.... It's not working... I mean, keys are working in the terminal but not on the GUI...
Please can anyone have a look at it?

Code: Select all

#!/usr/bin/env python

import uinput
import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)
GPIO.setup(04, GPIO.IN) # UP
GPIO.setup(17, GPIO.IN) # DOWN
GPIO.setup(27, GPIO.IN) # LEFT
GPIO.setup(22, GPIO.IN) # RIGHT
GPIO.setup(23, GPIO.IN) # BTN1
GPIO.setup(24, GPIO.IN) # BTN2

events = (
        uinput.KEY_UP,
        uinput.KEY_DOWN,
        uinput.KEY_LEFT,
        uinput.KEY_RIGHT,
        uinput.KEY_ENTER,
        uinput.KEY_ESC,
        )

device = uinput.Device(events)


# Bools to keep track of movement
UP = False
DOWN = False
LEFT = False
RIGHT = False
BOUTON1 = False
BOUTON2 = False

while True:
    if (not UP) and (not GPIO.input(4)):
        UP = True
        device.emit(uinput.KEY_UP, 1)
    if UP and GPIO.input(4):
        UP = False
        device.emit(uinput.KEY_UP, 0)
    if (not DOWN) and (not GPIO.input(17)):
        DOWN = True
        device.emit(uinput.KEY_DOWN, 1)
    if DOWN and GPIO.input(17):
        DOWN = False
        device.emit(uinput.KEY_DOWN, 0)
    if (not LEFT) and (not GPIO.input(27)):
        LEFT = True
        device.emit(uinput.KEY_RIGHT, 1)
    if LEFT and GPIO.input(27):
        LEFT = False
        device.emit(uinput.KEY_RIGHT, 0)
    if (not RIGHT) and (not GPIO.input(22)):
        RIGHT = True
        device.emit(uinput.KEY_RIGHT, 1)
    if RIGHT and GPIO.input(22):
        RIGHT = False
        device.emit(uinput.KEY_RIGHT, 0)
    if (not BOUTON1) and (not GPIO.input(23)):
        BOUTON1 = True
        device.emit(uinput.KEY_ENTER, 1)
    if BOUTON1 and GPIO.input(23):
        BOUTON1 = False
        device.emit(uinput.KEY_ENTER, 0)
    if (not BOUTON2) and (not GPIO.input(24)):
        BOUTON2 = True
        device.emit(uinput.KEY_ESC, 1)
    if BOUTON2 and GPIO.input(24):
        BOUTON2 = False
        device.emit(uinput.KEY_ESC, 0)

Thanks by advance !

[Gomez]

necroing ... did you ever solve this issue? I am running into the same problem.

Thanks

[DougieLawson]

The OP hasn't logged on to the forum since 15/12/2014.