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The "Ultimate" Raspberry Pi - With analoge stick

thorleif@tjweb.no

Hello there!

 

I've been struggelign a while now with a handheld console (Retro Game Pi). The tutorial says to use a adapter to make the analoge stick i want to use as a digital 1 and 0 stick. But i really want analoge inputs aswell so i can use it in games which requires an analog stick (Monkey Island on scummvm e.g.).

 

So i started exploring fields i never been on before, i found out using a i2c enabled ADC i could read the values into pyton, using a uinput module to make a joystick move. So i programmed an attiny to read analoge values, pass them on as 2 bytes on i2c into my raspberry pi using python. Somehow i get values around 310 on 1.64 volt and 895 on 3.3v so it dosent seem to work properly (running it on 3.3v).

 

So i give kinda up on what i'm doing and want to ask you guys if you have any tip on how i can get this to work? Both making the joystick analog and digital (dpad function when emulator needs it, or joystick if emulator needs that)z

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  • Hehey, got it working now.

     

    Joystick has an attiny85 under sending analog signals over i2c as a ADC, requesting each channel in python then emulating a joystick. That works perfectly image But in emulationstation i configure it and add my 6 buttons (ABXY, Start and SELECT) and dpad on joystick. But entering scummvm the buttons does not work?

     

    The XBOX controller i have works on A B X Y perfectly, the bumpers are start / pause in scummvm. What i wonder is how can i emulate a "xbox" controller with python? Since it seems like thats the "thing". Using uinput i only have 1 joystick button, but on emulationstation it shows that the xbox controller has multiple joystick buttons, how can i do the same?

    Might be stupid question but any info / help would be appriciated! I'm closing in on my goal :)

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  • Hehey, got it working now.

     

    Joystick has an attiny85 under sending analog signals over i2c as a ADC, requesting each channel in python then emulating a joystick. That works perfectly image But in emulationstation i configure it and add my 6 buttons (ABXY, Start and SELECT) and dpad on joystick. But entering scummvm the buttons does not work?

     

    The XBOX controller i have works on A B X Y perfectly, the bumpers are start / pause in scummvm. What i wonder is how can i emulate a "xbox" controller with python? Since it seems like thats the "thing". Using uinput i only have 1 joystick button, but on emulationstation it shows that the xbox controller has multiple joystick buttons, how can i do the same?

    Might be stupid question but any info / help would be appriciated! I'm closing in on my goal :)

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