HID shared memory is a 0x40000 byte read-only segment of memory shared between applications for input. The segment contains structures for most if not all input methods available to applications.
Memory Map
| Offset
|
Size
|
Description
|
| 0x0
|
0x400
|
DebugPad
|
| 0x400
|
0x3000
|
#TouchScreen
|
| 0x3400
|
0x400
|
#Mouse
|
| 0x3800
|
0x400
|
#Keyboard
|
| 0x3C00
|
0x1000 (0x400 * 0x04)
|
BasicXpad
|
| 0x4C00
|
0x200
|
HomeButton
|
| 0x4E00
|
0x200
|
SleepButton
|
| 0x5000
|
0x200
|
CaptureButton
|
| 0x5200
|
0x800 (0x80 * 0x10)
|
InputDetector
|
| 0x5A00
|
0x4000
|
Controller Serials?
|
| 0x9A00
|
0x32000 (0x5000 * 0x0A)
|
Npad
|
| 0x3BA00
|
0x800
|
Gesture
|
| 0x3C200
|
0x20
|
[5.0.0+] ConsoleSixAxisSensor
|
TouchScreen
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of Entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Maximum Entry Index, always 16
|
| 0x20
|
0x8
|
Timestamp in samples
|
TouchScreenState
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Touch count
|
TouchScreenStateData
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x4
|
Padding
|
| 0xC
|
0x4
|
Touch Index
|
| 0x10
|
0x4
|
Touch X
|
| 0x14
|
0x4
|
Touch Y
|
| 0x18
|
0x4
|
Touch Diameter X
|
| 0x1C
|
0x4
|
Touch Diameter Y
|
| 0x20
|
0x4
|
Angle
|
| 0x24
|
0x4
|
Padding
|
Mouse
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of Entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Maximum Entry Index, always 16
|
MouseState
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Timestamp in samples again?
|
| 0x10
|
0x4
|
Mouse X
|
| 0x14
|
0x4
|
Mouse Y
|
| 0x18
|
0x4
|
Mouse X Change
|
| 0x1C
|
0x4
|
Mouse Y Change
|
| 0x20
|
0x4
|
Scroll Change Y
|
| 0x24
|
0x4
|
Scroll Change X
|
| 0x28
|
0x8
|
Mouse Buttons
|
Keyboard
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of Entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Maximum Entry Index, always 16
|
KeyboardState
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Timestamp in samples again?
|
| 0x10
|
0x8
|
Modifier Mask
|
| 0x18
|
0x20
|
Keys Down, each key gets one bit based on the HID keyboard scan code (F1 is 0x3A, bit 0x3A is set)
|
Controller Serials?
This section contains a series of 16 structures 0x400 bytes large.
| Offset
|
Size in bytes
|
Description
|
| 0x30
|
0xE
|
Controller Serial
|
| 0x60
|
0xE
|
Controller Serial
|
Npad
This section contains a series of 10 0x5000 byte structures describing each available controller.
| Index
|
Description
|
| 0 to 7
|
Players 1 to 8
|
| 8
|
Handheld Mode
|
| 9
|
Unknown
|
NpadInternalState
| Offset
|
Size
|
Description
|
| 0x0
|
0x28
|
#NpadInternalStateHeader
|
| 0x28
|
0x20
|
NpadFullKeyHeader
|
| 0x48
|
0x30 * 17
|
Array of NpadFullKeyState
|
| 0x378
|
0x20
|
#NpadHandheldHeader
|
| 0x398
|
0x30 * 17
|
Array of #NpadHandheldState
|
| 0x6C8
|
0x20
|
NpadJoyDualHeader
|
| 0x6E8
|
0x30 * 17
|
Array of NpadJoyDualState
|
| 0xA18
|
0x20
|
NpadJoyLeftHeader
|
| 0xA38
|
0x30 * 17
|
Array of NpadJoyLeftState
|
| 0xD68
|
0x20
|
NpadJoyRightHeader
|
| 0xD88
|
0x30 * 17
|
Array of NpadJoyRightState
|
| 0x10B8
|
0x20
|
NpadPalmaHeader
|
| 0x12B8
|
0x30 * 17
|
Array of NpadPalmaState
|
| 0x1408
|
0x20
|
NpadSystemExtHeader
|
| 0x1428
|
0x30 * 17
|
Array of NpadSystemExtState
|
| 0x1758
|
0x20
|
NpadSixAxisSensorFullKeyHeader
|
| 0x1778
|
0x68 * 17
|
Array of NpadSixAxisSensorFullKeyState
|
| 0x1E60
|
0x20
|
NpadSixAxisSensorHandheldHeader
|
| 0x1E80
|
0x68 * 17
|
Array of NpadSixAxisSensorHandheldState
|
| 0x2568
|
0x20
|
NpadSixAxisSensorJoyLeftDualHeader
|
| 0x2588
|
0x68 * 17
|
Array of NpadSixAxisSensorJoyLeftDualState
|
| 0x2C70
|
0x20
|
NpadSixAxisSensorJoyRightDualHeader
|
| 0x2C90
|
0x68 * 17
|
Array of NpadSixAxisSensorJoyRightDualState
|
| 0x3378
|
0x20
|
NpadSixAxisSensorJoyLeftHeader
|
| 0x3398
|
0x68 * 17
|
Array of NpadSixAxisSensorJoyLeftState
|
| 0x3A80
|
0x20
|
NpadSixAxisSensorJoyRightHeader
|
| 0x3AA0
|
0x68 * 17
|
Array of NpadSixAxisSensorJoyRightState
|
| 0x4188
|
0x4
|
DeviceType
|
| 0x418C
|
0x4
|
Padding
|
| 0x4190
|
0x8
|
#NpadSystemProperties
|
| 0x4198
|
0x4
|
#NpadSystemButtonProperties
|
| 0x419C
|
0x4
|
PowerInfo0 battery state (must be 0-4)
|
| 0x41A0
|
0x4
|
PowerInfo1 battery state (must be 0-4)
|
| 0x41A4
|
0x4
|
PowerInfo2 battery state (must be 0-4)
|
| 0x41A8
|
0x20
|
NfcXcdDeviceHandleHeader
|
| 0x41C8
|
0x20 * 2
|
Array of NfcXcdDeviceHandleState
|
| 0x4208
|
0x8
|
Mutex
|
| 0x4248
|
0x20
|
NpadGcTriggerHeader
|
| 0x4268
|
0x18 * 17
|
Array of NpadGcTriggerState
|
| Offset
|
Size
|
Description
|
| 0x0
|
0x4
|
Status, bit0 Pro Controller/HID controller, bit1 wired for handheld, bit2 pair, bit3 left, bit4 right
|
| 0x4
|
0x4
|
Is Joy-Con Half
|
| 0x8
|
0x4
|
bit1 color set does not exist
|
| 0xC
|
0x4
|
RGBA Body Color (single Joy-Con or Pro Controller)
|
| 0x10
|
0x4
|
RGBA Button Color (single Joy-Con or Pro Controller)
|
| 0x14
|
0x4
|
bit1 color set does not exist
|
| 0x18
|
0x4
|
RGBA Body Color (right Joy-Con)
|
| 0x1C
|
0x4
|
RGBA Button Color (right Joy-Con)
|
| 0x20
|
0x4
|
RGBA Body Color (left Joy-Con)
|
| 0x24
|
0x4
|
RGBA Button Color (left Joy-Con)
|
NpadHandheldHeader
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Maximum Entry Index, always 16
|
NpadHandheldState
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Timestamp in samples again
|
| 0x10
|
0x8
|
#Button State
|
| 0x18
|
0x4
|
Left Joystick X
|
| 0x1C
|
0x4
|
Left Joystick Y
|
| 0x20
|
0x4
|
Right Joystick X
|
| 0x24
|
0x4
|
Right Joystick Y
|
| 0x28
|
0x8
|
Controller State (bit0 connected, bit1 wired)
|
Button State
| Bit
|
Button
|
| 0
|
A
|
| 1
|
B
|
| 2
|
X
|
| 3
|
Y
|
| 4
|
Left Stick Pressed
|
| 5
|
Right Stick Pressed
|
| 6
|
L
|
| 7
|
R
|
| 8
|
ZL
|
| 9
|
ZR
|
| 10
|
Plus
|
| 11
|
Minus
|
| 12
|
Left
|
| 13
|
Up
|
| 14
|
Right
|
| 15
|
Down
|
| 16
|
Left Stick Left
|
| 17
|
Left Stick Up
|
| 18
|
Left Stick Right
|
| 19
|
Left Stick Down
|
| 20
|
Right Stick Left
|
| 21
|
Right Stick Up
|
| 22
|
Right Stick Right
|
| 23
|
Right Stick Down
|
| 24
|
SL
|
| 25
|
SR
|
NpadSixAxisSensorHandheldHeader
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Maximum Entry Index, up to 16
|
NpadSixAxisSensorHandheldState
| Offset
|
Size
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Unknown
|
| 0x10
|
0x8
|
Timestamp in samples again
|
| 0x1C
|
0x4 * 3
|
Accelerometer data as 3 floats
|
| 0x24
|
0x4 * 3
|
Gyroscope data as 3 floats
|
| 0x30
|
0x4 * 3
|
Unknown sensor data as 3 floats
|
| 0x3C
|
0x4 * 9
|
Orientation basis as 3x3 matrix of floats
|
| 0x60
|
0x8
|
Unknown, always 1
|
Official sw copies the data from offset 0x8 size 0x60 to the final output state.
NpadSystemProperties
| Bit
|
Description
|
| 0
|
PowerInfo0 isCharging
|
| 1
|
PowerInfo1 isCharging
|
| 2
|
PowerInfo2 isCharging
|
| 3
|
PowerInfo0 powerConnected
|
| 4
|
PowerInfo1 powerConnected
|
| 5
|
PowerInfo2 powerConnected
|
| 6-8
|
Unused
|
| 9
|
UnsupportedButtonPressed_NpadSystem
|
| 10
|
UnsupportedButtonPressed_NpadSystemExt
|
| 11
|
AbxyButtonOriented
|
| 12
|
SlSrButtonOriented
|
| 13
|
[4.0.0+] PlusButtonCapability
|
| 14
|
[4.0.0+] MinusButtonCapability
|
| 15
|
[8.0.0+] DirectionalButtonsSupported
|
| 16-63
|
Unused
|
NpadSystemButtonProperties
| Bit
|
Description
|
| 0
|
UnintendedHomeButtonInputProtectionEnabled (if cleared)
|