How to - Use the GPIO for Buttons instead of a Teensy

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Lphillimore
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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by Lphillimore » Wed Oct 11, 2017 5:11 pm

DalThePal wrote:
Wed Oct 11, 2017 2:53 pm
I followed all of these steps with my sd Card in a rpi A and retropie would boot up fine. When I place the same card into my rpi zero it can’t finish booting. It reaches the retropie screen and then crashes and tries to boot again. It just does this on a continuous loop. Does anyone now what I’ve done wrong?
Use the image specifically for the Zero

DalThePal
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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by DalThePal » Fri Oct 13, 2017 2:28 pm

Lphillimore wrote:
Wed Oct 11, 2017 5:11 pm
DalThePal wrote:
Wed Oct 11, 2017 2:53 pm
I followed all of these steps with my sd Card in a rpi A and retropie would boot up fine. When I place the same card into my rpi zero it can’t finish booting. It reaches the retropie screen and then crashes and tries to boot again. It just does this on a continuous loop. Does anyone now what I’ve done wrong?
Use the image specifically for the Zero
I just did a fresh install with the correct image but I'm still getting the same results.

DalThePal
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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by DalThePal » Thu Oct 19, 2017 4:55 pm

DalThePal wrote:
Fri Oct 13, 2017 2:28 pm
Lphillimore wrote:
Wed Oct 11, 2017 5:11 pm
DalThePal wrote:
Wed Oct 11, 2017 2:53 pm
I followed all of these steps with my sd Card in a rpi A and retropie would boot up fine. When I place the same card into my rpi zero it can’t finish booting. It reaches the retropie screen and then crashes and tries to boot again. It just does this on a continuous loop. Does anyone now what I’ve done wrong?
Use the image specifically for the Zero
I just did a fresh install with the correct image but I'm still getting the same results.
I found that when I power it using USB it boots up just fine. I checked the connections for powering through HDMI but they're fine. I'm at a loss. anybody have any ideas?

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by Lphillimore » Fri Oct 20, 2017 1:51 am

DalThePal wrote:
Thu Oct 19, 2017 4:55 pm
DalThePal wrote:
Fri Oct 13, 2017 2:28 pm
Lphillimore wrote:
Wed Oct 11, 2017 5:11 pm


Use the image specifically for the Zero
I just did a fresh install with the correct image but I'm still getting the same results.
I found that when I power it using USB it boots up just fine. I checked the connections for powering through HDMI but they're fine. I'm at a loss. anybody have any ideas?
Hmm doesn't make a lot of sense. I've never had any issues with a fresh install of the 0 image on an SD. This is the stock retropie image, right?

You can either setup the Pi Zero for Wifi in headless mode or plug a USB controller in, navigate to Wifi, plug a keyboard in to configure etc. then reboot.

Once on the Wifi and after SSH is enabled I clear the Emulationstation settings if using the above keyboard method. Complete the GPIO button setup, reboot and all good.

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by Golddeenoh » Wed Dec 20, 2017 7:26 pm

Apparently 4.3 doesn't have an Adafruit-Retrogame directory. any other suggestions on how i can get the directory added so i can add the GPIO file into one.

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by snoek09 » Thu Dec 21, 2017 12:52 am

RetroPie doesn't contain that folder. You have to put it there yourself. See the instructions in the first post of this topic: viewtopic.php?f=22&t=57#p525

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by Mr. Breaker_ » Mon Dec 25, 2017 12:58 pm

prerunnerseth wrote:
Sat May 07, 2016 2:14 pm
This tutorial provided by http://www.prs-tech.com

Updated 4/6/2017

Update 7/24/2017
...


Download the retrogame.c file at the google drive link below and place in a directory on your Pi Zero SD card.
https://drive.google.com/open?id=0B9I5H ... EhKUFJOb2M

I used FTP to get to my pi zero and made the Adafruit-Retrogame directory in the /home/pi directory. This is the directory referenced later in code in this tutorial. So its best to stick to this.
Instead of using FTP just make an "Adafruit-Retrogame" directory in /home/pi.

Code: Select all

cd /home/pi

Code: Select all

sudo mkdir Adafruit-Retrogame
Then

Code: Select all

sudo nano /home/pi/Adafruit-Retrogame/retrogame.c
Which opens an empty nano screen just copy the content of the "retrogame.c" file and paste it here and writeout. It will take a few seconds but it's much faster as setting up FTP only for this file...
as of retropie 4.2 SSH is now disabled by default. to enable
press F4 on a keyboard then.

...

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by tinkerBOY » Tue Dec 26, 2017 7:33 am

For those having a hard time setting up the Retrogame utility program, you can just get a copy of RetroPie with the utility program already pre-installed.

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by chrissantamaria » Fri Apr 27, 2018 9:39 am

Not sure how recently their article was updated but the Adafruit page has a much simpler guide which just worked with my RetroPie image.
https://learn.adafruit.com/retro-gaming ... s-software

Their script basically holds your hand through all of the steps (including starting on boot and the fix for RetroPie). All I had to do was edit the cfg file for my button pins.

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Re: How to - Use the GPIO for Buttons instead of a Teensy

Post by Penniwhistle » Sat Aug 11, 2018 6:32 pm

Hello! I'm hoping to use this plan in order to connect up a SNES controller to a Pi Zero, but a question - I assume I can use a different BCM pin, and define that in the retrogame.c file if need be? Attached is a diagram of which pins my screen needs boxed in red - I assume I can move LEFT from pin 16 to 22, define it as such, and done?
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PiZeroPins.png
PiZeroPins.png (1012.72 KiB) Viewed 587 times

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