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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    Retropi + GPIO = Not Working (Using adafruit more info in post)

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    gpioraspberry pi 3retropieadafruit gpioadafruit
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    • hiulitH
      hiulit @hiulit
      last edited by

      @hiulit said in Retropi + GPIO = Not Working (Using adafruit more info in post):

      The GPIO numbers must be the BCM numbers. Check this website https://pinout.xyz/

      Go to this website and use the BCM numbers :)

      My little contributions to the RetroPie project:

      • Shell-Script-Boilerplate
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      R 1 Reply Last reply Reply Quote 0
      • R
        R0shen @hiulit
        last edited by

        @hiulit
        So use the BCM numbers on the left and right and plug each butten and write the corresponding numberon the boot retrogame cfg file?

        1 Reply Last reply Reply Quote 0
        • R
          R0shen @hiulit
          last edited by

          @hiulit
          Sorry I'm a noob at this stuff so I can wire up to any BCM number from the pinout website photo?

          hiulitH 2 Replies Last reply Reply Quote 0
          • hiulitH
            hiulit @R0shen
            last edited by

            @r0shen Don't worry, no need to apologize :)

            Yes, you can wire up to any BCM number.
            You also need to connect the joystick and all the buttons to GROUND.

            My little contributions to the RetroPie project:

            • Shell-Script-Boilerplate
            • Fun-Facts-Splashscreens
            • Limit-Last-Played-Games
            1 Reply Last reply Reply Quote 1
            • hiulitH
              hiulit @R0shen
              last edited by hiulit

              @r0shen Here, a pic with the GPIO pinout (here it says GPIO instead of BCM)

              Raspberry Pi GPIO

              And how it looked like when I was starting my project :)

              Wiring

              My little contributions to the RetroPie project:

              • Shell-Script-Boilerplate
              • Fun-Facts-Splashscreens
              • Limit-Last-Played-Games
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              • R
                R0shen @hiulit
                last edited by

                @hiulit
                Eyyy!! Thank You SOOOOOO Much I got it working currently enjoying some donkey kong Thank You sooo much haha :)

                hiulitH 1 Reply Last reply Reply Quote 1
                • hiulitH
                  hiulit @R0shen
                  last edited by

                  @r0shen Alright!!! :D I'm glad you're enjoying some retro games!

                  My little contributions to the RetroPie project:

                  • Shell-Script-Boilerplate
                  • Fun-Facts-Splashscreens
                  • Limit-Last-Played-Games
                  R 1 Reply Last reply Reply Quote 0
                  • R
                    R0shen @hiulit
                    last edited by

                    @hiulit
                    If I was to do a 2 player is their an adafruit gpio code to make 2 joysticks and 3 buttons on either side work?

                    hiulitH 1 Reply Last reply Reply Quote 0
                    • hiulitH
                      hiulit @R0shen
                      last edited by

                      @r0shen You can tweak the same file and add as many KEY/GPIO values as you want.

                      My little contributions to the RetroPie project:

                      • Shell-Script-Boilerplate
                      • Fun-Facts-Splashscreens
                      • Limit-Last-Played-Games
                      R 1 Reply Last reply Reply Quote 0
                      • R
                        R0shen @hiulit
                        last edited by

                        @hiulit
                        Where would you add the duplicate joystick and three buttons?

                        hiulitH 1 Reply Last reply Reply Quote 0
                        • hiulitH
                          hiulit @R0shen
                          last edited by

                          @r0shen Below the KEY/GPIO values you already have.

                          You just need to assign new values. Example:

                          W    21 # 2 player UP
                          S    22 # 2 player DOWN
                          A    23 # 2 player LEFT
                          D    24 # 2 player RIGHT
                          P    25 # 2 player 'A' button
                          etc...
                          

                          and so on.

                          P.S. This example is completely made up! ;) But you get the idea, right?

                          My little contributions to the RetroPie project:

                          • Shell-Script-Boilerplate
                          • Fun-Facts-Splashscreens
                          • Limit-Last-Played-Games
                          R 1 Reply Last reply Reply Quote 0
                          • R
                            R0shen @hiulit
                            last edited by R0shen

                            @hiulit
                            So the name such as 2 player UP
                            2 player DOWN does it matter what it's named? or does the name correspong with something in retropi? and also would you know in retro pi where to configure an extra joystick and duplicate buttons (e.g. 2 x buttons 2 y buttons and so on)

                            hiulitH 1 Reply Last reply Reply Quote 0
                            • hiulitH
                              hiulit @R0shen
                              last edited by

                              @r0shen No, those are comments. Everything that comes after a hashtag # is a comment. So it doesn't matter what you write there. It's just so you know what the key represents.
                              And for the second question, I don't know, but you could take a look at the docs https://retropie.org.uk/docs/RetroArch-Configuration/ maybe you'll find something there :)

                              My little contributions to the RetroPie project:

                              • Shell-Script-Boilerplate
                              • Fun-Facts-Splashscreens
                              • Limit-Last-Played-Games
                              R 1 Reply Last reply Reply Quote 0
                              • R
                                R0shen @hiulit
                                last edited by R0shen

                                @hiulit
                                So All it does is make each GPIO number a keystroke and you just wire your controlls to it and use the keystroke as up down left right button a b x y and so on. You just write what it is to know whats in that GPIO number right? anyway to add more of the GPIO pins to that code?

                                1 Reply Last reply Reply Quote 0
                                • RaccoonR
                                  Raccoon
                                  last edited by Raccoon

                                  Hi there ^^,
                                  I´m new here and I seriously need help. I´m doing an Internship right now and my finishing Project is trying to build my own MintyPi, whith a Raspberry Pi Zero. The emulation Station is working, with an extern USB Controler.
                                  I soldered my own board for Buttons. And I checked the Buttons funktion. They´re doing their job.
                                  I installed the new image and everything.

                                  I´m totally new to Raspi and Linux.
                                  For 5 Days now, I tried to configurate the Buttons: A, B, X, Y, UP, DOWN, LEFT, RIGHT, START, SELECT, L, R
                                  I loaded down the Adafruit retrogame and loaded the PiGRRL Zero.
                                  Looks kind of like this:

                                  LEFT 27 # Joypad left
                                  RIGHT 22 # Joypad right
                                  DOWN 5 # Joypad down
                                  UP 4 # Joypad up
                                  Z 14 # 'A' button
                                  X 16 # 'B' button
                                  A 21 # 'X' button
                                  S 20 # 'Y' button
                                  Q 12 # Left shoulder button
                                  W 6 # Right shoulder button
                                  LEFTCTRL 19 # 'Select' button
                                  ENTER 17 # 'Start' button

                                  these numbers are the bcm i read out over
                                  gpio readall
                                  I also tried the GPIO pins from the coulerfull picture earlier in the chat:

                                  LEFT 27 # Joypad left
                                  RIGHT 22 # Joypad right
                                  DOWN 05 # Joypad down
                                  UP 04 # Joypad up
                                  Z 21 # 'A' button
                                  X 16 # 'B' button
                                  A 26 # 'X' button
                                  S 20 # 'Y' button
                                  Q 12 # Left shoulder button
                                  W 06 # Right shoulder button
                                  LEFTCTRL 19 # 'Select' button
                                  ENTER 17 # 'Start' button

                                  But the only thing that works as said is ENTER 17, this is the only button working correctly.
                                  on the last setting the
                                  X button does LEFT
                                  Y button does DOWN
                                  L button does UP (but not always)
                                  and the others are doing nothing

                                  So my guess is that the pins might be correct but the commands LEFT, RIGHT, etc.
                                  are not assignt correctly.

                                  I would be really gratefull O3O
                                  if you could help me find a solution.

                                  1 Reply Last reply Reply Quote 0
                                  • RaccoonR
                                    Raccoon
                                    last edited by Raccoon

                                    So I actually found an smal pice for a solution. Turns out I had a german keyboard configured.
                                    The Adafruitprogramm, seems to take the keys from the keyboard an transfers it to my own buttons. Since I used an german keyboard it didn´t work. I changend to us keyboard, but that didn´t work either. I´m back to german keyboard now. So I changed the Names of the Keys:
                                    A 27 # Joypad left
                                    D 22 # Joypad right
                                    S 5 # Joypad down
                                    W 04 # Joypad up
                                    ? 21 # 'A' button NUM6
                                    ? 16 # 'B' button NUM5
                                    ? 26 # 'X' button NUM4
                                    ? 20 # 'Y' button NUM8
                                    ? 12 # Left shoulder button must be the 3§³ Key
                                    "+" 6 # Right shoulder button on NUM+ + without the ""
                                    #' 19 # 'Select' button must be the '# Key
                                    ENTER 17 # 'Start' button

                                    So far, so good.

                                    My new Problem is that I don´t know the correct names of the keys needed.
                                    Does anyone of you know where i could find them?

                                    Would be great if anyon could answer :D

                                    hiulitH 1 Reply Last reply Reply Quote 0
                                    • hiulitH
                                      hiulit @Raccoon
                                      last edited by

                                      @raccoon Here you go:

                                      • https://github.com/adafruit/Adafruit-Retrogame/blob/master/keyTable.h
                                      • https://thenated0g.wordpress.com/misc-linux-info0/keys-from-usrincludelinuxinput-h/
                                      • https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h

                                      My little contributions to the RetroPie project:

                                      • Shell-Script-Boilerplate
                                      • Fun-Facts-Splashscreens
                                      • Limit-Last-Played-Games
                                      RaccoonR 1 Reply Last reply Reply Quote 1
                                      • D
                                        dizmodawg
                                        last edited by

                                        Is there some body who could make a youtube video on how to retrogame and program the buttons to the gpio pins? I'm almost done with my cabinet and i have a arcade only build and not want to use a game pad encoder. I want to use gpio pins but am a noob. Also i am using a pi 3. I found this and this is how i want mine.
                                        0_1509587421239_pins.jpg

                                        1 Reply Last reply Reply Quote 0
                                        • RaccoonR
                                          Raccoon @hiulit
                                          last edited by

                                          @hiulit Tanks!!! It worked :D

                                          hiulitH 1 Reply Last reply Reply Quote 1
                                          • hiulitH
                                            hiulit @Raccoon
                                            last edited by

                                            @raccoon Nice!! I'm glad it worked! :D

                                            My little contributions to the RetroPie project:

                                            • Shell-Script-Boilerplate
                                            • Fun-Facts-Splashscreens
                                            • Limit-Last-Played-Games
                                            1 Reply Last reply Reply Quote 0
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