The encoders should appear as regular joystick/gamepads under Linux, so something like pygame or python-evdev should be enough to read the inputs.

@mitu Interesting! Thank you very much for your feedback! I'll check how the library emulates the keyboard!

My fallback is a microcontroller to emulate the keyboard, if the software portion is too complex.

@buzz no, as i dont know if there is an issue with the script, or if there is a common issue with retropie settings that other run into with this using this script

PyGame has the pygame.event and pygame.joystick modules to process inputs.

Wikipedia has an elaborate artikle about Parsing and its meaning in Computer Languages.

RetroPie is based on Rasbperry Pi OS (Lite), you can install the desktop and then separately install IDLE with

sudo apt install idle

You can then find it in the list of programs in the start menu.

Try running it with full paths to both the python executable and your python script. No need for anything in runcommand.cfg.

One more piece of the puzzle...at the end of my script, if I remove the GPIO.cleanup(), then the light stays on.

But, in subsequent calls to my script, I receive a warning that the channel is already in use. It doesn't stop the code, but the programmer in me doesn't like warnings.

My question now is why does the cleanup function change the output of the GPIO pins?

After my genius idea to delete all stuff in this discussion, which only cause trouble and chaos, I figured out to do another attempt and post again. This is version 2 of the little app. The gui and commandline are streamlined into one app. The commandline options are flexible now and it supports a configuration file. Unfortunately in GUI mode only one patch file at a time is supported (but I think this is not a real issue and is a limitation in GUI only). And it can create output folders too. Updated the first post with all relevant information.

It started out so simple.

So with 4.4, most core and main packages installed, but there were a few that wouldn't. lr-stella, lr-pcsx-rearmed failed to build.

So in short - trying this is a mixed bag. Some things will build. Some things won't.
At least the raspberry pi image is a stable platform, but doing PC builds will always be a forever-forward moving target

Thanks. As soon as I posted here, I found this topic and with a bit of modification I was able to get it working. :)

@mitu no problem, I’m working around it with the other emulator for now. I’ve not tested what it’s like but I’m sure I can hold on! Thanks!

@WesleyBidsnipes said in I'd like the Retropie to power on our Xbox and switch to its OneGuide app:

@mitu It's been years since I've messed with udev... does that work with Bluetooth as well? We have one of the Playstation 3 wireless controllers, I think it's the Sixaxis.

It should work.

I just got it working with the following python script using rgbcommander's servostik linux command line. Hardware mode is not needed.

http://users.telenet.be/rgbcommander/

from gpiozero import Button from subprocess import check_call from signal import pause #Functions def onGpio3Open(): #Arcade 1up switched to OFF check_call(['sudo', 'poweroff']) print("gpio3Released") check_call(['sudo', 'poweroff']) def onGpio17Closed(): print("gpio17Pressed") check_call(['sudo', './SetServoStik', '8']) def onGpio27Closed(): print("gpio27Pressed") check_call(['sudo', './SetServoStik', '4']) #Main Execution Starts Here gpio3Btn = Button(3) gpio3Btn.when_released = onGpio3Open gpio17Btn = Button(17) gpio17Btn.when_pressed = onGpio17Closed gpio27Btn = Button(27) gpio27Btn.when_pressed = onGpio27Closed pause()

@mitu Ah, that scuppers those plans then. I think I'll give this up as a failed experiment. I did manage to get Kodi to launch from my green button by importing psutil and check_output and changing the code to

espid = int(check_output(["pidof","-s","emulationstation"])) es = psutil.Process(espid) es.suspend() Kodi = subprocess.Popen("/home/pi/RetroPie/roms/ports/Kodi.sh") Kodi.wait es.resume()

But then the script would no longer start from my crontab on boot so not really usable.

Mystic Mine is a Python game included in RetroPie. You can find it in the Experimental packages. I strongly recommend you to study how this game is programmed as it runs very well on the Raspberry Pi.

The scriptmodule that installs and configures this game in RetroPie is here: https://github.com/RetroPie/RetroPie-Setup/blob/master/scriptmodules/ports/mysticmine.sh