Contributors other than me:

• Daniel Baumgarten @dbaumgarten
  • Approved on Oct 1, 2018, 11:25 PM
• Andrew Nickell @nickell-andrew
• Drew Wallace @drew-wallace
  • Approved on Oct 1, 2018, 5:58 PM

Emails sent.

Hi! I can connect the joycons but Steam big picture (and games) don't recognize them properly.
A and X are recognized as A and B, but left stick or buttons don't work in big picture.

Running Ubuntu 18.04

I would like to use this program but I don't know how to compile it. Could you please make some documentation on that?

cp $(go env GOBIN)/jcdriver ./jcdriver contains spaces in the first path, so it cant be run

Trying to run the code on OSX, I get the following error when downloading and building from GitHub:

$ go get -u github.com/riking/joycon/prog4/jcdriver
# github.com/riking/joycon/prog4/jcdriver
go/src/github.com/riking/joycon/prog4/jcdriver/output_generic.go:11:54: undefined: InputRemappingOptions

When I try to manually build the file, I get the same error:

$ go build 'github.com'/riking/joycon/prog4/jcdriver
# github.com/riking/joycon/prog4/jcdriver
jcdriver/output_generic.go:11:54: undefined: InputRemappingOptions

Brand new to Golang, and I can't find any information through google on this error; what am I missing?

Any ideas? Thanks!

There is a strange issue I've come across that I can't really nail down. It could be a Unity(game engine), Steam, Linux or JCdriver issue.

Using Steam on Arch Linux, If I have the joycons paired and in single controller mode, setup through Steam as a Switch Pro controller and launch a Unity game it will crash. Disconnect the controller and it launches no problem. Controller works great with Steam and seems to be detected as an Xbox controller in non-Unity games.

Happy to provide some outputs to stuff if anyone has some ideas of where to start.

There should be an optional graphical UI to disconnect and/or re-pair the controllers from paired into single mode.

We could trigger this from the HOME button

Please refer to https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering/blob/master/bluetooth_hid_notes.md#standard-input-report---stick-data

I installed the aur package, entered the command sudo jcdriver and I get this:

[console]> panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0xb8 pc=0x503a2c]

goroutine 1 [running]:
github.com/riking/joycon/prog4/consoleiface.(*Manager).SearchDevices(0xc000086640, 0x0, 0x0)
	/tmp/yaourt-tmp-aldelaro5/aur-joycon-git/src/joycon/prog4/jcdriver/src/github.com/riking/joycon/prog4/consoleiface/Manager.go:448 +0x31c
github.com/riking/joycon/prog4/consoleiface.(*Manager).Run(0xc000086640)
	/tmp/yaourt-tmp-aldelaro5/aur-joycon-git/src/joycon/prog4/jcdriver/src/github.com/riking/joycon/prog4/consoleiface/Manager.go:77 +0x41e
main.main()
	/tmp/yaourt-tmp-aldelaro5/aur-joycon-git/src/joycon/prog4/jcdriver/main.go:49 +0x2c4

Is this expected or have I done something wrong?

EDIT: I have found the cause, it is because the program will try to consider ANY nintendo device as joycons. The reason this was appearing was because I had a wiiu pro paired and it was detecting it as joycons, but didn't get the joycons info so it crash because it tries to print these info which doesn't exist.

Windows is preventing the program from opening the bluetooth device in read-write mode.

• Userspace reading does not work
• Kernel driver

May need to go straight to a kernel driver.

when i type in cp $(go env GOBIN)/jcdriver ./jcdriver it says cp: cannot stat '/jcdriver': No such file or directory even though it exists.

Hey man! Great job with your tool :)

Is it possible to get it working without having to run it with sudo? I would love to implement this on my "Powerpoint" like presentations app Spice-Up 😄

JoyCons doesn't sync with the new 6.0, i didn't tried before but i think it is related

Followed instructions in readme and joycon does not connect as an input device or controller (tested via http://html5gamepad.com/)

The lights keep going back and forth and not setting on a player number.

I'm able to get hidapi_demo.c working without much effort but the main program is a bit beyond me. In particular I can't seem to read any joystick data. Any help would be appreciated.

I am on a pi, so running this in the background would be ideal.

Is the maximum reported SPI data different between joy-cons and Pro controller?

I found out that 0x1D is the maximum from my joy-cons.
Unfortunately, I don't own a pro controller to test

I implemented a async dump of both joy cons for https://github.com/shinyquagsire23/HID-Joy-Con-Whispering and fixed the extra bytes in dumps. Now I'm cleaning up stuff and would be good to know if this is the real maximum value for all devices, before I make a pull request.

Every time I try to run go get -u github.com/riking/joycon/prog4/jcdriver it shows this:

and then exits.
Do I need to remove the comment on the command for it to work?
edit: replaced text with picture

Hello.

I don't know anything in golang. When I try to build the package I have a

prog4/jcdriver/main.go:8:2: cannot find package "github.com/riking/joycon/prog4/consoleiface" in any of:
	/usr/lib/go-1.6/src/github.com/riking/joycon/prog4/consoleiface (from $GOROOT)
	($GOPATH not set)
prog4/jcdriver/factory_uinput.go:8:2: cannot find package "github.com/riking/joycon/prog4/jcpc" in any of:
	/usr/lib/go-1.6/src/github.com/riking/joycon/prog4/jcpc (from $GOROOT)
	($GOPATH not set)
prog4/jcdriver/factory_uinput.go:9:2: cannot find package "github.com/riking/joycon/prog4/output" in any of:
	/usr/lib/go-1.6/src/github.com/riking/joycon/prog4/output (from $GOROOT)
	($GOPATH not set)
Makefile:34: recipe for target 'jcdriver' failed
make: *** [jcdriver] Error 1

Thank for any help

I just wanted to say thank you to @riking for making this project.

I am using it to play Pokemon on the Citra 3DS emulator and I am really enjoying it. And that I can use my joycons makes it even better, mainly because the analog stick is a lot more confortable than the keyboard. (And my friends now think that I am a wizard :)

Hi!

I receive these messages when I connect the joy-cons to my computer (Debian 9), and indeed the controller needs calibration because it's a mess in game, but how do I do it?

Thank you for your attention!

doing the 'go get' thing from the readme returns

package github.com/riking/joycon: no buildable Go source files in /home/frot/go/src/github.com/riking/joycon

running the makefile contained therein returns some missing packages errors.
Might be due to me having no idea about go though!

Your readme states

go get -u github.com/riking/jcdriver || true

when it should be

go get -u github.com/riking/joycon || true

Hey,

check the latest 5 commits:
https://github.com/CTCaer/jc_toolkit/commits/master

It's preliminary proof of concept on how to parse the calibration for the analog sticks.
The data includes center position and x/y distance from center.

Lastly, I found out, that the factory calibration is used by switch, if no user calibration.
I changed the center position and the position on screen was wrong.

EDIT:
The calibration documentation is now on https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering

I'm really curious about getting the controllers to work as 1 on my Pi. Any updates or documentation would be appreciated!

Your C driver works with SDL, but the Go version doesn't. Not sure why...

You said calibrated JoyCons were needed, however my JoyCons are fresh out of the box and as far as I know have not been connected to a switch.

Do I just connect the joycons via Bluetooth? Do they work together as 1 single controller?

go get -u github.com/riking/joycon/prog4/jcdriver
# github.com/riking/joycon/prog4/jcdriver
/usr/lib/go/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/usr/sbin/ld: /tmp/go-link-428780761/000006.o: unable to initialize decompress status for section .debug_info
/usr/sbin/ld: /tmp/go-link-428780761/000006.o: unable to initialize decompress status for section .debug_info
/usr/sbin/ld: /tmp/go-link-428780761/000006.o: unable to initialize decompress status for section .debug_info
/usr/sbin/ld: /tmp/go-link-428780761/000006.o: unable to initialize decompress status for section .debug_info
/tmp/go-link-428780761/000006.o: file not recognized: file format not recognized
collect2: error: ld returned 1 exit status

Running Antergos here.

• Userspace input reading works fine as root
• uinput allows presenting a device to other programs
• EVIOCGRAB prevents events on old device nodes
  • Games still detect and try to use the grabbed device node

Looks like... a kernel driver?

Hi!

I'm playing Steam games with the paired Joy-Cons controller, but I have a problem with the controller bindings. Steam thinks the controller is an XBox controller, and thus swaps buttons A <-> B & Y <-> X. Moreover, the X and Y axis on both joysticks are inverted, for instance giving the top right direction on the controller will make the character go down left.

Is there a handy way to edit those bindings?

Thank you for your time!

EDIT: In some games, joysticks don't work, I don't know if it is a recognition problem, or a binding one

Can someone please explain how I can set this up on Retropie.
I'm new and can't figure it out.
Thanks!

can you reconnect the joycons to the switch after connecting them to your'e computer?

I believe you said there was a button combo for switching back to 2 player mode but it got lost when GitHub went down for you. I just tried it after you said you added it back in and nothing happened.

http://switchbrew.org/index.php?title=Joy-Con

Also the Switch SDK leaked yesterday, so I would imagine this might get updated with more info soon.

This can be tested on this site

Hey, I am trying to set this up and when connecting only 1 works perfectly but when trying to connect the second one it doesn't pick it up, my bluethoot connects it but the program doesnt show anything,

Am I doing something wrong?

It works independenly of the controles, so no matter if L or R only the first one is picked up

Recently found this project and got it setup to work in a few programs. While setting up my JoyCons in antimicro, I noticed that left=right, up=down, etc. This wasn't an issue in most programs I tried as they let me specify which direction should be positive/negative (ie retroarch, which has you setup control sticks by pressing up, down, left, and right). However, Steam only detects which axises are up/down and left/right, meaning all directions are inverted in Steam games, and I've found no option in Steam to fix this. Any help fixing this would be greatly appreciated 😄
EDIT: OS is Ubuntu MATE 17.10 x64 in case it helps!

When I'm trying to push L+R I have this issue

plonk
plonk
pairing double
panic: runtime error: integer divide by zero

goroutine 19 [running]:
github.com/riking/joycon/prog4/joycon.(*calibrationData).Adjust(0x105fa1bc, 0x8e00763, 0x0)
	/home/pi/go/src/github.com/riking/joycon/prog4/joycon/common.go:98 +0x3b8
github.com/riking/joycon/prog4/joycon.(*joyconBluetooth).ReadInto(0x105fa180, 0x10612b10, 0x1d9200)
	/home/pi/go/src/github.com/riking/joycon/prog4/joycon/bluetooth.go:153 +0x228
github.com/riking/joycon/prog4/controller.(*two).JoyConUpdate(0x10612b00, 0x1d92a0, 0x105fa180, 0x1)
	/home/pi/go/src/github.com/riking/joycon/prog4/controller/two.go:47 +0x120
github.com/riking/joycon/prog4/joycon.notify(0x1d92a0, 0x105fa180, 0x1, 0x1052efd4, 0x2, 0x2)
	/home/pi/go/src/github.com/riking/joycon/prog4/joycon/common.go:15 +0x6c
github.com/riking/joycon/prog4/joycon.(*joyconBluetooth).reader(0x105fa180)
	/home/pi/go/src/github.com/riking/joycon/prog4/joycon/bluetooth.go:570 +0x410
created by github.com/riking/joycon/prog4/joycon.NewBluetooth
	/home/pi/go/src/github.com/riking/joycon/prog4/joycon/bluetooth.go:71 +0xdc

• Userspace input reading works fine
• Cannot create a new input device without a signed kernel driver (or SIP off)

when i type in sudo apt install libudev-dev go git it says unable to locate package go

When attempting to use the joy-cons with steam input through big-picture mode as a single controller, the resulting controller mapping's left vertical axis is inverted. Changing the mapping through js-test does not seem to do affect the resulting configuration.

make
go install -v ./prog4/jcdriver
make: go: Command not found
Makefile:34: recipe for target 'jcdriver' failed
make: *** [jcdriver] Error 127

Any Solutions Anyone?

Hey @riking,

I was able to compile this on my Pi and it's working like a champ. I see you're re-writting this in Go. I'm hoping I will still be able to compile this on my pi once you're through. Currently, I'm using this driver for a pi project that basically mimics a Switch. I have a 7" screen, 3D printed case with built in Joy-Con rails on the sides, WiFi dongle, Bluetooth dongle, and soon it will be powered by a battery. It will primarily run a program called Parsec which is a super low latency desktop streaming solution for gaming. The goal is to be able to play full PC games on the go with as little latency as possible.

I am curious of your goals for this driver. Assuming it was left in it's current state, as a program that needs to be run, are you going to be adding any interesting features? Mainly, are you going to build in some button combination to allow for the coupling/decoupling of Joy-Cons? Or, is the program just for testing purposes as you write a native driver to be installed and never need to run anything?

Finally, thanks for making this. You are enabling one of my long time dreams of a homemade handheld console.

I can connect both Joy-Cons just fine, so that both of them have one steady light. But after this I don't know how to proceed, it wasn't working in any game I've tried so far, though some games (i.e. Enter the Gungeon) showed that there was a controller connected.

Am I missing something?

jcdriver/output_generic.go:11:9: cannot use func literal (type func(jcpc.JoyConType, int) (jcpc.Output, error)) as type jcpc.OutputFactory in return argument

I get the error above when I attempt to run go get ./... or go get ./jcdriver from the prog4 directory.

I'm running OSX 10.13

Full disclosure: I'm brand new to go and am mostly fiddling to see if I can effectively use joycon with my macbook pro

Self-explanatory. Latest version spams poll error: interrupted system call to terminal.