Anyone willing to share a link with their file with pastebin.com?

/opt/retropie/configs/n64/InputAutoCfg.ini

@mitu Thank you. I will never try that. Might have saved a lot of time if I did that in the first place :-)
Happy Christmas

@TPR said in [SOLVED] N64 Mupen64Plus Controller Issue on GPi 2 Case:

SOLVED!

The correct syntax needs to be this in the InputAutoCfg.ini:

X Axis = hat(0 Left Right)
Y Axis = hat(0 Up Down)

Remove the quotes.

I'm not sure if the instructions in the RetroPie doc are wrong or something has changed recently, but that fix worked for me.

Hi! Thank you very much for the contribution, it works perfectly! I have another question… Does the audio work well for you with mupen64plus? Many thanks!

I was finally able to set it up.
I configure the control the best that I can in Emustation.
With HotKey is the Cpad UP
And then I put this configuration in Retroarch.cfg in the N64 folder.

Settings made here will only override settings in the global retroarch.cfg if placed above the #include line

input_remapping_directory = "/opt/retropie/configs/n64/"
input_player1_joypad_index = 2

input_player1_r_x_plus = "8"
input_player1_r_x_minus = "3"
input_player1_r_y_plus = "9"
input_player1_r_y_minus = "0"

input_player1_left = "left"
input_player1_right = "right"
input_player1_up = "up"
input_player1_down = "down"

input_player1_a_btn ="nul"
input_player1_b_btn = "1"
input_player1_y_btn = "2"
input_player1_x_btn = "nul"

input_player1_start_btn = "12"

input_player1_l = "4"
input_player1_r = "5"
input_player1_l2_btn = "6"

#include "/opt/retropie/configs/all/retroarch.cfg"

For other folks looking for answers about this, see the following forum:

https://retropie.org.uk/forum/topic/27007/button-mapping-for-a-real-n64-controller?_=1594477474831

@DavidDraper I'm sorry to hear that it is not working for you.

First off, you definitely shouldn't edit the .bak file, stick with only the .cfg file. Sorry if I wasn't clear there. I'm not sure what the .bak even does, or how to revert it.

Second, remember to only overwrite the button mappings. For example, in the .cfg file there are 2 lines above the mappings that I left intact. For me it reads:
input_device = "SealieComputing N64 RetroPort"
input_driver = "udev"

This of course would change depending on what controller you are using.

If you've done all of the above correctly, then the only other thing that I can think of is that it might be because you are using a "Generic USB" controller rather than an original N64 controller with an adapter.
Perhaps this means your buttons are in a different order, or are labeled differently, I'm not really sure as I don't own a Dragon Rise controller to test with.

Still, if you'd like, feel free to copy what your original dragon rise.cfg file was (prior to copy / pasting my info), and I'll see if I can translate it into something that may work for you.

Otherwise, good luck, and I hope that other solution works for you!

It appears that in /opt/retropie/configs/n64/InputsAutoCfg.ini that under the relevant controller there was no entry for B button, and A button was incorrect. I edited this manually to correct for this, but I still get the same problem when i run the emulator - e.g., my attempted fix makes no difference to how it actually performs!

@lupsyn Those settings are for the Libretro core, not for the standalone Mupen64 emulator. Did you try running your games with the lr-mupen64plus or lr-mupen64plus-nx cores ?

@mitu ok I think I know what to do. Should I edit the file to the keycodes?