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.

@corminos said in Setting ServoStik using python and GPIO pins: I see my problem now. When I first read the instructions on the link, I did not understand what he meant by "switching to hardware mode". At the time I did not have the joysticks and did not understand what that meant. Now I do. I'm going to do some more reading and then give it a try. Just a little nervous because this is a one-way ticket and I really don't feel like shelling out more for another control board if I screw it up. Thanks to those who read and responded. I love how active this forum is. Hey there. I'm just wondering if you had any luck with controlling a ServoStik with GPIO? Did you convert the board to hardware mode and have success? Thanks.

@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

I just added an exec functionality to my multiplexer: The idea is, to allow external programs to be executed on a button press. This can be used to enable/disable special functions which are triggered by external executables: Here is a demo and you get an idea why I need this functionality:

@sdabbs I don't know sorry. Try using pip to check and upgrade py modules. pip list pip upgrade xxx.xxx

I fixed it after writing it all out above I figured it out. First off I needed to run the below and reboot as it turns out not all functions where doing there job: sudo apt-get install build-essential python-dev python-smbus python-pip python-imaging python-numpy git Then when you restart the error goes away. Also the site has the GPIO pins incorrect as it should of been as follows. Now all works with options and game name displaying will check album art later.

I want to start emulationstation on-demand, this is what I've come up with: Emulationstation heavily depends on a terminal being allocated for it to work. It switches a lot between graphical and text-mode. So in "/etc/systemd/system/my-emulationstation.service": [Unit] Description=my emulationstation [Service] User=pi ExecStart=/usr/local/bin/run-emulationstation Type=simple StandardInput=tty-force TTYVHangup=yes TTYPath=/dev/tty20 TTYReset=yes Also, there's a bug that requires emulationstation to be started inside /home/pi, so in "/usr/local/bin/run-emulationstation": #! /bin/bash # switch to same tty allocated in .service chvt 20 # cd to home cd /home/pi # run emulationstation in foreground process /opt/retropie/supplementary/emulationstation/emulationstation.sh And for the curious: I want it to start when specific hardware is attached, specifically an 8Bitdo Zero Bluetooth Gamepad. So in "/etc/udev/rules.d/50-my-emulationstation.rules": ACTION=="add", SUBSYSTEM=="input", ATTR{name}=="8Bitdo Zero GamePad", TAG+="systemd", ENV{SYSTEMD_WANTS}="my-emulationstation"

@John_RM_70 Try one command at a time and see which ones locks up the Pi. It's probably tvservice, but it could be because of the previous command, which specifies might specify an invalid mode. Have you tried tvservice -p (preferred mode) ?

@mitu said in Modify Power Button Behaviour to 'Hold for three seconds'??: You can increase the bouncetime from 2sec to something larger. Even as it is now, just a single quick push will shut the software down - i dont have to hold the button at all. Perhaps I need to use a different script that relies on the button being held.

@JToivonen got what you mean and here is the "un modified" solution...simply if you're playing plug the usb controller and when you finish just unplug it and it will shutdown automatically!, even when a power trigger happens "electricity went off then come back again" and found that your gamepad isn't connected it will shut down :) here is the python file you just need to edit the line that kills qjoypad to kill whole system add poweroff or shutdown -h as you use in your momentry switch don't forget to make the file run at start and special thanks to pablo idea behind the script is that system creates a js0 file for controller 1 inputs and js1 for controller 2 when connected and so on, the script searches for that file if it's found that mean you've connected the gamepad and probably playing a game and when you finish unplugging the gamepad removes js0 file and when the script discovers the file is not found it kills an app process called qjoypad which you'll change to shutdown please note you're not gonna use //User Variables section in this code so just ignore it.

Ok I see... So it's possible to use my script and retropie However, only on a computer. Thanks for the information I wasn't aware that on RP almost all emulators don't run on X. Thanks a lot :)

@mesym Well I don't know what's wrong but this worked for me. It starts Tetris and shows me pointer adress. Something wrong with your py-fu? import os import time import subprocess p = subprocess.Popen(['/opt/retropie/supplementary/runcommand/runcommand.sh','0', '_SYS_', 'gb', '/home/pi/RetroPie/roms/gb/Tetris (JUE) (V1.0) [!].gb']) while 1: print(p) time.sleep(5)