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 in bytes
|
Description
|
| 0x0
|
0x400
|
Unknown, Header?
|
| 0x400
|
0x3000
|
Capacitive Touchscreen
|
| 0x3400
|
0x400
|
Mouse
|
| 0x3800
|
0x400
|
Keyboard
|
| 0x3C00
|
0x400
|
Unknown, header and 17 entries
|
| 0x4000
|
0x400
|
Unknown, header and 17 entries
|
| 0x4400
|
0x400
|
Unknown, header and 17 entries
|
| 0x4800
|
0x400
|
Unknown, header and 17 entries
|
| 0x4C00
|
0x200
|
Unknown, header which says it has 17 entries, but the max entry index is 0
|
| 0x4E00
|
0x200
|
Unknown, header which says it has 17 entries, but the max entry index is 0
|
| 0x5000
|
0x200
|
Unknown, header which says it has 17 entries, but the max entry index is 0
|
| 0x5200
|
0x80*0x10
|
Unknown, 16 structures with a header and 2 entries each
|
| 0x5A00
|
0x4000
|
Controller Serials?
|
| 0x9A00
|
0x32000
|
Controllers
|
| 0x3BA00
|
0x4600
|
Unknown
|
Capacitive Touchscreen
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x28
|
Touch Header
|
| 0x28
|
0x298 * 17
|
Touch Entries
|
| Offset
|
Size in bytes
|
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
|
Touch Entry
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x10
|
Touch Entry Header
|
| 0x10
|
0x28 * 16
|
Touch Data
|
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x8
|
Number of Touches
|
Touch Data Entry
| Offset
|
Size in bytes
|
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 in bytes
|
Description
|
| 0x0
|
0x20
|
Mouse Header
|
| 0x20
|
0x30 * 17
|
Mouse Entries
|
| Offset
|
Size in bytes
|
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
|
Mouse Entry
| Offset
|
Size in bytes
|
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 in bytes
|
Description
|
| 0x0
|
0x20
|
Keyboard Header
|
| 0x20
|
0x30 * 17
|
Keyboard Entries
|
| Offset
|
Size in bytes
|
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
|
Keyboard Entry
| Offset
|
Size in bytes
|
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
|
Controllers
This section contains a series of 10 0x5000 byte structures describing each available controller.
| Controller Index
|
Description
|
| 0 to 7
|
Players 1 to 8
|
| 8
|
Handheld Mode
|
| 9
|
Unknown
|
Controller
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x28
|
Controller Header
|
| 0x28
|
0x20 header + 0x30 * 17
|
Controller Pro Controller State
|
| 0x378
|
0x20 header + 0x30 * 17
|
Controller Handheld Joined State
|
| 0x6C8
|
0x20 header + 0x30 * 17
|
Controller Joined State (Lone Joy-Con or Pair of Joy-Con)
|
| 0xA18
|
0x20 header + 0x30 * 17
|
Controller Left State (Vertical Controls w/ Joy-Con Half)
|
| 0xD68
|
0x20 header + 0x30 * 17
|
Controller Right State (Vertical Controls w/ Joy-Con Half)
|
| 0x10B8
|
0x20 header + 0x30 * 17
|
Controller Main State (No Analog Sticks)
|
| 0x1408
|
0x20 header + 0x30 * 17
|
Controller Main State
|
| 0x1758
|
?
|
SixAxisSensor Pro Controller State
|
| 0x1E60
|
?
|
SixAxisSensor Handheld State
|
| 0x2578
|
?
|
SixAxisSensor Pair Left State
|
| 0x2C80
|
?
|
SixAxisSensor Pair Right State
|
| 0x3378
|
?
|
SixAxisSensor Single Left State
|
| 0x3A80
|
?
|
SixAxisSensor Single Right State
|
| 0x41D0
|
0x10
|
Controller MAC
|
| 0x41F0
|
0x10
|
Controller MAC
|
| Offset
|
Size in bytes
|
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)
|
| Offset
|
Size in bytes
|
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
|
Controller State
| Offset
|
Size in bytes
|
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
|
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x8
|
Timestamp in ticks?
|
| 0x8
|
0x8
|
Number of entries, always 17
|
| 0x10
|
0x8
|
Latest Entry Index
|
| 0x18
|
0x8
|
Total available entries, always 16
|
SixAxisSensor State Entry
| Offset
|
Size in bytes
|
Description
|
| 0x0
|
0x8
|
Timestamp in samples
|
| 0x8
|
0x60
|
The actual state data.
|
Official sw copies the data from offset 0x8 size 0x60 to the final output state.