Gamepad not detected

Osirus

I'm using an USB SNES Controller that I made myself with a PIC32 microcontroller. When EmulationStation starts on RetroPie it says no Gamepads are detected. I'm wondering what I can do to troubleshoot this?

The gamepad appears as /dev/input/js0 and when I use jstest all the buttons work as they should. The Gamepad has 8 buttons and a 2-axis Hat Switch. It's also worked as plug-and play on multiple Windows PCs.

Pi 3
5V USB micro power supply
RetroPie 4.1
SD Image on RetroPie website
USB Devices connected: USB HID Gamepad
Controller used: SNES-USB

BuZz

@Osirus please post the output of udevadm info /dev/input/js0 (please wrap it in a codeblock - http://commonmark.org/help/)

Osirus

P: /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/0003:0000:0001.0005/input/input1/js0
N: input/js0
E: DEVNAME=/dev/input/js0
E: DEVPATH=/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.4/1-1.4:1.0/0003:0000:0001.0005/input/input1/js0
E: ID_BUS=usb
E: ID_INPUT=1
E: ID_MODEL=SNES_Controller
E: ID_MODEL_ENC=SNES\x20Controller
E: ID_MODEL_ID=0001
E: ID_PATH=platform-3f980000.usb-usb-0:1.4:1.0
E: ID_PATH_TAG=platform-3f980000_usb-usb-0_1_4_1_0
E: ID_REVISION=0100
E: ID_SERIAL=My_Name_SNES_Controller
E: ID_TYPE=hid
E: ID_USB_DRIVER=usbhid
E: ID_USB_INTERFACES=:030000:
E: ID_USB_INTERFACE_NUM=00
E: ID_VENDOR=My_Name
E: ID_VENDOR_ENC=My\x20Name
E: ID_VENDOR_ID=0000
E: MAJOR=13
E: MINOR=0
E: SUBSYSTEM=input
E: USEC_INITIALIZED=641332

BuZz

create a file /etc/udev/rules.d/99-gamepad.rules with the content

SUBSYSTEM=="input", ATTRS{name}=="NAME OF DEVICE", MODE="0666", ENV{ID_INPUT_JOYSTICK}="1"

replacing NAME OF DEVICE with the fullname - that will show in dmesg eg

hid-generic 0003:0583:2060.0006: input,hidraw2: USB HID v1.10 Joystick [USB,2-axis 8-button gamepad  ] on usb-3f980000.usb-1.5/input0

in my case it would be ATTRS{name}=="USB,2-axis 8-button gamepad "

Osirus

Thanks, that worked.

ES still said "No Gamepads Detected" but when I held down a button on the SNES pad it showed its name and let me configure it.

Any possible reasons why I wasn't detected before creating the 99-gamepad.rules file? Here is the HID descriptor I use for the gamepad:

0x05,0x01,        // USAGE_PAGE (Generic Desktop)
    0x09,0x05,        // USAGE (Game Pad)
    0xA1,0x01,        // COLLECTION (Application)
    0x15,0x00,        // LOGICAL_MINIMUM(0)
    0x25,0x01,        // LOGICAL_MAXIMUM(1)
    0x35,0x00,        // PHYSICAL_MINIMUM(0)
    0x45,0x01,        // PHYSICAL_MAXIMUM(1)
    0x75,0x01,        // REPORT_SIZE(1)
    0x95,0x08,        // REPORT_COUNT(8)
    0x05,0x09,        // USAGE_PAGE(Button)
    0x19,0x01,        // USAGE_MINIMUM(Button 1)
    0x29,0x08,        // USAGE_MAXIMUM(Button 8)
    0x81,0x02,        // INPUT(Data,Var,Abs)
    0x05,0x01,        // USAGE_PAGE(Generic Desktop)
    0x25,0x07,        // LOGICAL_MAXIMUM(7)
    0x46,0x3B,0x01,   // PHYSICAL_MAXIMUM(315)
    0x75,0x04,        // REPORT_SIZE(4)
    0x95,0x01,        // REPORT_COUNT(1)
    0x65,0x14,        // UNIT(Eng Rot:Angular Pos)
    0x09,0x39,        // USAGE(Hat Switch)
    0x81,0x42,        // INPUT(Data,Var,Abs,Null)
    0x65,0x00,        // UNIT(None)
    0x95,0x01,        // REPORT_COUNT(1)
    0x81,0x01,        // INPUT(Cnst,Ary,Abs)
    0xC0