Xbox Input Devices

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XID Overview

XIDs are USB devices.

The hardware side is USB with a different plug while the software side is USB without HID-descriptors. Technicly a XID is a USB-hub for the Memory-Units and the XBL Communicator. The logical XID gamepad USB device is internally connected to that hub.

USB Adapters

The Xbox input devices are USB devices. As such, you can connect a keyboard to the Xbox, or a gamepad to your PC. In fact, Linux already has drivers for the gamepad. In order to preserve Xbox hardware, please do not cut OEM Xbox cables to make an adapter. Decent adapters can be acquired cheaply (~$10 USD ea. on 2017.04.30).

Port (From) Plug (To) Link
Xbox USB-A Amazon
USB-A Xbox Amazon

Wiring

Untested / unverified! Take this with a grain of salt.

Pin Typical cable color Description
1 Green USB D-
2 White USB D+
3 Black GND
4 Red VCC
5 Yellow VBlank signal from video output (for Lightguns)

Protocol

Controller to Xbox

typedef struct XIDGamepadReport {
    uint8_t bReportId;
    uint8_t bLength;
    <Data>
}

Xbox to Controller

typedef struct XIDGamepadOutputReport {
    uint8_t report_id; //FIXME: is this correct?
    uint8_t length;
    <Data>
}

Standard Gamepads

USB Descriptors

Most standard gamepads share the same USB descriptor. Usually the only difference will be the VID / PID. See https://github.com/xboxdrv/xboxdrv/blob/stable/src/xpad_device.cpp for a list of devices.

Controller to Xbox

20 bytes

Field Offset (Bytes) Mask Notes
Alt=Digital-Pad-Up 2 0x01
Alt=Digital-Pad-Down 2 0x02
Alt=Digital-Pad-Left 2 0x04
Alt=Digital-Pad-Right 2 0x08
Alt=START button 2 0x10
Alt=BACK button 2 0x20
Alt=Left-Thumbstick-Press 2 0x40
Alt=Right-Thumbstick-Press 2 0x80
Alt=A button 4 0xFF Button is analog
Alt=B button 5 0xFF Button is analog
Alt=X button 6 0xFF Button is analog
Alt=Y button 7 0xFF Button is analog
Alt=Black button 8 0xFF Button is analog
Alt=White button 9 0xFF Button is analog
Left-Trigger 10 0xFF Trigger is analog
Right-Trigger 11 0xFF Trigger is analog
Alt=Left-Thumbstick-Horizontal 12 0xFFFF Negative = Left; Positive = Right
Alt=Left-Thumbstick-Vertical 14 0xFFFF Negative = Down; Positive = Up
Alt=Right-Thumbstick-Horizontal 16 0xFFFF Negative = Left; Positive = Right
Alt=Right-Thumbstick-Vertical 18 0xFFFF Negative = Down; Positive = Up

Xbox to Controller

6 bytes

Field Offset (Bytes) Mask Notes
Left actuator strength 2 0xFFFF
Right actuator strength 4 0xFFFF

The Microsoft Controller S will not react to packets which don't have a value of 6 in the length field of the header. The Fanatec Speedster 3 ForceShock will still react to those. Further testing is necessary with other gamepads.

Steering wheels

MadCatz Wheel

[FIXME]

Fanatec Speedster 3 ForceShock

Pedals

The Pedals are not a USB device.

Note that the cable going to the pedals is also not a USB port despite using the Xbox controller breakaway plug. Likewise, plugging the pedals to a PC / Xbox won't provide a USB / XID (it is detected as garbage): 

new full-speed USB device number 14 using xhci_hcd
device descriptor read/64, error -71
device descriptor read/64, error -71
new full-speed USB device number 15 using xhci_hcd
device descriptor read/64, error -71
device descriptor read/64, error -71
new full-speed USB device number 16 using xhci_hcd
Device not responding to setup address.
Device not responding to setup address.
device not accepting address 16, error -71
new full-speed USB device number 17 using xhci_hcd
Device not responding to setup address.
Device not responding to setup address.
device not accepting address 17, error -71
unable to enumerate USB device

Internal HUB

USB Descriptors

Power not connected, pedals not connected, not in Tuning mode: 

Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0         8
  idVendor           0x3767 
  idProduct          0x0102 
  bcdDevice            0.01
  iManufacturer           0 
  iProduct                1 End
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               64mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval             255
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             3
  wHubCharacteristic 0x000d
    Per-port power switching
    Compound device
    Per-port overcurrent protection
  bPwrOn2PwrGood       50 * 2 milli seconds
  bHubContrCurrent     64 milli Ampere
  DeviceRemovable    0x02
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0103 power enable connect
   Port 2: 0000.0100 power
   Port 3: 0000.0100 power
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0003
  Self Powered
  Remote Wakeup Enabled

Steering wheel (and Pedals)

Always connected to port 1 of the internal HUB

USB Descriptors
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x3767 
  idProduct          0x0101 
  bcdDevice            2.80
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        88 Xbox
      bInterfaceSubClass     66 Controller
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0020  1x 32 bytes
        bInterval               4
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

Light guns

EMS TopGun II

This is an unlicensed / unofficial Xbox accessory.

The website for this product can be found at http://www.hkems.com/product/xbox/EMSTopGun2.htm

The gun presents itself as a standard Xbox gamepad. It uses a different USB descriptor for Xbox (X) and the other mode (P). There is no internal hub in this device.

EMS TopGun II Xbox Gamepad Notes
Stick Directional Pad
Trigger A Digital only, either 0 or 255
Grip B
A X
B Y
START Start
SE/BA Back
Aim Left / Right Negative / Positive on left thumbstick X axis Absolute position using the full stick range
Aim Up / Down Positive / Negative on left thumbstick Y axis

There is no right thumbstick, thumbstick presses, black/white button or trigger buttons (All of those read constant zeros).

Turbo Mode
  • Turbo mode 0 keeps A pressed while trigger is held
  • Turbo mode 1 toggles A rapidly while trigger is held
  • Turbo mode 2 toggles A rapidly and once in a while B while trigger is held
Force Feedback

The upper part of the gun is moveable and should push back to simulate recoil (possibly hurting your thumb while you are using the stick). I could not get the force feedback working, but I'm sure I've had it working in the past on PC.[citation needed]

USB Descriptors

This is the descriptor in the Xbox mode (X). 

Bus 003 Device 016: ID 0b9a:016b  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0b9a 
  idProduct          0x016b 
  bcdDevice            4.57
  iManufacturer           1 EMS̖E
  iProduct                2 EMS TopGun
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        88 Xbox
      bInterfaceSubClass     66 Controller
      bInterfaceProtocol      0 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               8
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

Steel Battalion Controller

USB Descriptors

From http://www.yaronet.com/topics/154490-steel-battalion-controller-homemade#post-15 

bcdUSB:             0x0110
bDeviceClass:         0x00
bDeviceSubClass:      0x00
bDeviceProtocol:      0x00
bMaxPacketSize0:      0x08 (8)
idVendor:           0x0A7B
idProduct:          0xD000
bcdDevice:          0x0100
iManufacturer:        0x00
iProduct:             0x00
iSerialNumber:        0x00
bNumConfigurations:   0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x00
Device Bus Speed:     Full
Device Address:       0x03
Open Pipes:              0

Configuration Descriptor:
wTotalLength:       0x0020
bNumInterfaces:       0x01
bConfigurationValue:  0x01
iConfiguration:       0x00
bmAttributes:         0x80 (Bus Powered )
MaxPower:             0xFA (500 Ma)

Interface Descriptor:
bInterfaceNumber:     0x00
bAlternateSetting:    0x00
bNumEndpoints:        0x02
bInterfaceClass:      0x58
bInterfaceSubClass:   0x42
bInterfaceProtocol:   0x00
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x82
Transfer Type:   Interrupt

Controller to Xbox

From http://steelbattalionnet.codeplex.com/SourceControl/latest#SBC/SteelBattalionController.cs

26 bytes

Field Offset (Bytes) Mask Notes
RightJoyMainWeapon 2 0x01
RightJoyFire 2 0x03 FIXME: WTF?! Mask might be bad?
RightJoyLockOn 2 0x04
Eject 2 0x08
CockpitHatch 2 0x10
Ignition 2 0x20
Start 2 0x40
MultiMonOpenClose 2 0x80
MultiMonMapZoomInOut 3 0x01
MultiMonModeSelect 3 0x02
MultiMonSubMonitor 3 0x04
MainMonZoomIn 3 0x08
MainMonZoomOut 3 0x10
FunctionFSS 3 0x20
FunctionManipulator 3 0x40
FunctionLineColorChange 3 0x80
Washing 4 0x01
Extinguisher 4 0x02
Chaff 4 0x04
FunctionTankDetach 4 0x08
FunctionOverride 4 0x10
FunctionNightScope 4 0x20
FunctionF1 4 0x40
FunctionF2 4 0x80
FunctionF3 5 0x01
WeaponConMain 5 0x02
WeaponConSub 5 0x04
WeaponConMagazine 5 0x08
Comm1 5 0x10
Comm2 5 0x20
Comm3 5 0x40
Comm4 5 0x80
Comm5 6 0x01
LeftJoySightChange 6 0x02
ToggleFilterControl 6 0x04
ToggleOxygenSupply 6 0x08
ToggleFuelFlowRate 6 0x10
ToggleBuffreMaterial 6 0x20
ToggleVTLocation 6 0x40
6 0x80
7 0xFF
8 0xFF
AimingX 9 0xFF, maybe 0xFFFF at offset 8? "Aiming Lever" joystick on the right. X Axis value.
AimingY 11 0xFF, maybe 0xFFFF at offset 10? "Aiming Lever" joystick on the right. Y Axis value.
RotationLever 13 0xFF, maybe 0xFFFF at offset 12? "Rotation Lever" joystick on the left.
SightChangeX 15 0xFF, maybe 0xFFFF at offset 14? "Sight Change" analog stick on the "Rotation Lever" joystick. X Axis value.
SightChangeY 17 0xFF, maybe 0xFFFF at offset 16? "Sight Change" analog stick on the "Rotation Lever" joystick. Y Axis value.
LeftPedal 19 0xFF, maybe 0xFFFF at offset 18?
MiddlePedal 21 0xFF, maybe 0xFFFF at offset 20?
RightPedal 23 0xFF, maybe 0xFFFF at offset 22?
TunerDial 24 0x0F The 9 o'clock postion is 0, and the 6 o'clock position is 12. The blank area between the 6 and 9 o'clock positions is 13, 14, and 15 clockwise.
24 0xF0
GearLever 25 0xFF The gear lever on the left block.

Xbox to Controller

From http://steelbattalionnet.codeplex.com/SourceControl/latest#SBC/SteelBattalionController.cs

34 bytes

Field Offset (Bytes) Mask Notes
EmergencyEject 2 0x0F
CockpitHatch 2 0xF0
Ignition 3 0x0F
Start 3 0xF0
OpenClose 4 0x0F
MapZoomInOut 4 0xF0
ModeSelect 5 0x0F
SubMonitorModeSelect 5 0xF0
MainMonitorZoomIn 6 0x0F
MainMonitorZoomOut 6 0xF0
ForecastShootingSystem 7 0x0F
Manipulator 7 0xF0
LineColorChange 8 0x0F
Washing 8 0xF0
Extinguisher 9 0x0F
Chaff 9 0xF0
TankDetach 10 0x0F
Override 10 0xF0
NightScope 11 0x0F
F1 11 0xF0
F2 12 0x0F
F3 12 0xF0
MainWeaponControl 13 0x0F
SubWeaponControl 13 0xF0
MagazineChange 14 0x0F
Comm1 14 0xF0
Comm2 15 0x0F
Comm3 15 0xF0
Comm4 16 0x0F
Comm5 16 0xF0
17 0x0F
GearR 17 0xF0
GearN 18 0x0F
Gear1 18 0xF0
Gear2 19 0x0F
Gear3 19 0xF0
Gear4 20 0x0F
Gear5 20 0xF0

Related links

XID emulation in XQEMU

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