Retro-bit Atari 2600 dual joystick adapter seen as single 2-axis joystick (solved)

[neurocrash]

Hi,

I have one of these Retro-bit Atari 2600 USB joystick adapters for two Atari joysticks.

https://stoneagegamer.com/atari-2600-to-usb-adapter-2-player-retro-bit.html

In Retropie, it is recognized as a "INNEX ATARI Controller USB", but I can only assign anything from one joystick.

I ran jstest to see what was going on, and it seems to see only one 2-axis joystick, and any movement on either stick is seen as if there was one 2-axis stick and one fire button attached. In Windows, it is seen as (two) 2-axis joysticks with fire buttons.

Does this seem like a driver limitation, or is it possible there is a configuration change that may be needed?

Thanks

[mitu]

@neurocrash This looks something similar to https://retropie.org.uk/docs/Xin-Mo-Controller/. Try applying the usbhid.quirks for the controller - with the corresponding vendor/product IDs for the adapter.

[neurocrash]

@mitu Thanks for finding that for me. I also found this alternate driver, but am getting into the area of I definitely have no idea what I'm doing with regards to installing and configuring it:

https://github.com/msteinbeck/hid-retrobit/blob/master/DETAILS.md

I'll report back after exploring these options.

[neurocrash]

@mitu After running lsusb, I can see the adapter as follows:

Bus 001 Device 004: ID 1292:4154 Innomedia Retro Link Atari cable

Using the vendor and product codes from above with 0x appended to each to look up 0x1292:0x4154 with the search term quirks, I found documents referencing this is the option that corresponds to the vendor and product info for my device:

options usbhid quirks=0x1292:0x4154:0x040

Some of these include the following sites:

https://github.com/libretro/Lakka-LibreELEC/blob/master/packages/libretro/retroarch/modprobe.d/usbhid.conf

https://github.com/msteinbeck/hid-retrobit/blob/master/DETAILS.md

I edited the /boot/cmdline.txt file and added the following to the end of the line of text:

usbhid.quirks=0x1292:0x4154:0x040

After rebooting, I can use the following commands to test that both controllers are working:

jstest /dev/input/js0
jstest /dev/input/js1

Thanks for the help!

[icode]

if anyone is still interested in this, check out these cool devices on icode.com. they allow you to have up to 4 paddles or joysticks connected to you PC via usb. There is even a bluetooth version.

Atari paddles and joysticks usb adapter