HID services

See here for the HID shared-memory.

hid

This is "nn::hid::IHidServer".

Cmd	Name
0	#CreateAppletResource
1	ActivateDebugPad
11	ActivateTouchScreen
21	ActivateMouse
31	ActivateKeyboard
32	[6.0.0+] SendKeyboardLockKeyEvent
40	AcquireXpadIdEventHandle
41	ReleaseXpadIdEventHandle
51	ActivateXpad
55	GetXpadIds
56	ActivateJoyXpad
58	GetJoyXpadLifoHandle
59	GetJoyXpadIds
60	ActivateSixAxisSensor
61	DeactivateSixAxisSensor
62	GetSixAxisSensorLifoHandle
63	ActivateJoySixAxisSensor
64	DeactivateJoySixAxisSensor
65	GetJoySixAxisSensorLifoHandle
66	StartSixAxisSensor
67	StopSixAxisSensor
68	IsSixAxisSensorFusionEnabled
69	EnableSixAxisSensorFusion
70	SetSixAxisSensorFusionParameters
71	GetSixAxisSensorFusionParameters
72	ResetSixAxisSensorFusionParameters
73	SetAccelerometerParameters
74	GetAccelerometerParameters
75	ResetAccelerometerParameters
76	SetAccelerometerPlayMode
77	GetAccelerometerPlayMode
78	ResetAccelerometerPlayMode
79	SetGyroscopeZeroDriftMode
80	GetGyroscopeZeroDriftMode
81	ResetGyroscopeZeroDriftMode
82	IsSixAxisSensorAtRest
83	[6.0.0+] IsFirmwareUpdateAvailableForSixAxisSensor
91	ActivateGesture
100	#SetSupportedNpadStyleSet
101	#GetSupportedNpadStyleSet
102	#SetSupportedNpadIdType
103	ActivateNpad
104	DeactivateNpad
106	#AcquireNpadStyleSetUpdateEventHandle
107	DisconnectNpad
108	GetPlayerLedPattern
109	[5.0.0+] ActivateNpadWithRevision
120	SetNpadJoyHoldType
121	GetNpadJoyHoldType
122	#SetNpadJoyAssignmentModeSingleByDefault
123	#SetNpadJoyAssignmentModeSingle
124	#SetNpadJoyAssignmentModeDual
125	#MergeSingleJoyAsDualJoy
126	StartLrAssignmentMode
127	StopLrAssignmentMode
128	SetNpadHandheldActivationMode
129	#GetNpadHandheldActivationMode
130	SwapNpadAssignment
131	IsUnintendedHomeButtonInputProtectionEnabled
132	EnableUnintendedHomeButtonInputProtection
133	[5.0.0+] SetNpadJoyAssignmentModeSingleWithDestination
134	[6.1.0+] SetNpadAnalogStickUseCenterClamp
200	#GetVibrationDeviceInfo
201	#SendVibrationValue
202	#GetActualVibrationValue
203	#CreateActiveVibrationDeviceList
204	#PermitVibration
205	#IsVibrationPermitted
206	#SendVibrationValues
207	[4.0.0+] SendVibrationGcErmCommand
208	[4.0.0+] GetActualVibrationGcErmCommand
209	[4.0.0+] BeginPermitVibrationSession
210	[4.0.0+] EndPermitVibrationSession
211	[7.0.0+] #IsVibrationDeviceMounted
300	ActivateConsoleSixAxisSensor
301	StartConsoleSixAxisSensor
302	StopConsoleSixAxisSensor
303	[5.0.0+] ActivateSevenSixAxisSensor
304	[5.0.0+] StartSevenSixAxisSensor
305	[5.0.0+] StopSevenSixAxisSensor
306	[5.0.0+] InitializeSevenSixAxisSensor
307	[5.0.0+] FinalizeSevenSixAxisSensor
308	[5.0.0+] SetSevenSixAxisSensorFusionStrength
309	[5.0.0+] GetSevenSixAxisSensorFusionStrength
310	[6.0.0+] ResetSevenSixAxisSensorTimestamp
400	IsUsbFullKeyControllerEnabled
401	EnableUsbFullKeyController
402	IsUsbFullKeyControllerConnected
403	[4.0.0+] HasBattery
404	[4.0.0+] HasLeftRightBattery
405	[4.0.0+] GetNpadInterfaceType
406	[4.0.0+] GetNpadLeftRightInterfaceType
500	[5.0.0+] GetPalmaConnectionHandle
501	[5.0.0+] InitializePalma
502	[5.0.0+] AcquirePalmaOperationCompleteEvent
503	[5.0.0+] GetPalmaOperationInfo
504	[5.0.0+] PlayPalmaActivity
505	[5.0.0+] SetPalmaFrModeType
506	[5.0.0+] ReadPalmaStep
507	[5.0.0+] EnablePalmaStep
508	[?+] ResetPalmaStep ([5.0.0-6.0.0] SuspendPalmaStep)
509	[?+] ReadPalmaApplicationSection ([5.0.0-6.0.0] ResetPalmaStep)
510	[?+] WritePalmaApplicationSection ([5.0.0-6.0.0] ReadPalmaApplicationSection)
511	[?+] ReadPalmaUniqueCode ([5.0.0-6.0.0] WritePalmaApplicationSection)
512	[?+] SetPalmaUniqueCodeInvalid ([5.0.0-6.0.0] ReadPalmaUniqueCode)
513	[?+] WritePalmaActivityEntry ([5.0.0-6.0.0] SetPalmaUniqueCodeInvalid)
514	[?+] WritePalmaRgbLedPatternEntry
515	[?+] WritePalmaWaveEntry
516	[?+] SetPalmaDataBaseIdentificationVersion
517	[?+] GetPalmaDataBaseIdentificationVersion
518	[?+] SuspendPalmaFeature
519	[5.1.0+] GetPalmaOperationResult
520	[5.1.0+] ReadPalmaPlayLog ([5.1.0-6.0.0] WritePalmaActivityEntry)
521	[5.1.0+] ResetPalmaPlayLog ([5.1.0-6.0.0] WritePalmaRgbLedPatternEntry)
522	[5.1.0+] SetIsPalmaAllConnectable
523	[5.1.0+] SetIsPalmaPairedConnectable
524	[5.1.0+] PairPalma
525	[5.1.0+] SetPalmaBoostMode
526	[7.0.0+] CancelWritePalmaWaveEntry
1000	SetNpadCommunicationMode
1001	GetNpadCommunicationMode

CreateAppletResource

Takes a PID and an u64 AppletResourceUserId. Returns an #IAppletResource.

SetSupportedNpadStyleSet

Takes an u32 #NpadStyleTag.

GetSupportedNpadStyleSet

Returns an u32 #NpadStyleTag.

SetSupportedNpadIdType

Takes a PID-descriptor, a type-0x9 input buffer, and an AppletResourceUserId. No output.

The input buffer contains an array of u32 #NpadIdType.

AcquireNpadStyleSetUpdateEventHandle

Takes an input u32, an u64 AppletResourceUserId, and an u64. Returns an output event handle, autoclear for this is user-specified.

The value for the last u64 doesn't seem to matter (?): official sw sets this to the address of the structure used for storing the event which is initialized after using this cmd.

SetNpadJoyAssignmentModeSingleByDefault

Takes a PID-descriptor, an u32, and an AppletResourceUserId. No output.

SetNpadJoyAssignmentModeSingle

Takes a PID-descriptor, an u32, AppletResourceUserId, and s64 NpadJoyDeviceType. No output.

SetNpadJoyAssignmentModeDual

Takes a PID-descriptor, an u32, and an AppletResourceUserId. No output.

MergeSingleJoyAsDualJoy

Takes a PID-descriptor, two u32s, and an AppletResourceUserId. No output.

GetNpadHandheldActivationMode

Takes a PID and an u64 AppletResourceUserId. Returns an output u64. Official user-processes panic if the output u64 is not 0-2.

GetVibrationDeviceInfo

Takes a #VibrationDeviceHandle. Returns an output #VibrationDeviceInfo.

SendVibrationValue

Takes a PID-descriptor, a #VibrationDeviceHandle, a #VibrationValue immediately after that, and an u64 AppletResourceUserId. No output.

GetActualVibrationValue

Takes a PID-descriptor, a #VibrationDeviceHandle, and an u64 AppletResourceUserId. Returns an output #VibrationValue.

CreateActiveVibrationDeviceList

No input. Returns an #IActiveVibrationDeviceList.

PermitVibration

Takes an input u8 bool. No output.

This affects the config displayed by System Settings.

IsVibrationPermitted

No input. Returns an output u8 bool.

SendVibrationValues

Takes an u64 AppletResourceUserId, and two type-0x9 input buffers containing an array of: #VibrationDeviceHandle for first buffer, and #VibrationValue for the second buffer.

Official sw uses the same entry-count for each array.

IsVibrationDeviceMounted

Takes a total of 0x10-bytes of input and a PID, returns an output u8 bool.

VibrationDeviceHandle

This is an u32.

VibrationDeviceInfo

This is a 0x8-byte struct.

VibrationValue

This is a 0x10-byte struct, which contains 4 float values.

IAppletResource

Cmd	Name
0	#GetSharedMemoryHandle

GetSharedMemoryHandle

No input. Returned a sharedmem handle.

IActiveVibrationDeviceList

This is "nn::hid::IActiveVibrationDeviceList".

Cmd	Name
0	#ActivateVibrationDevice

ActivateVibrationDevice

Takes an input #VibrationDeviceHandle. No output.

NpadStyleTag

This is a bitfield describing which controller styles are supported.

Bits	Description	Notes
0	NpadFullKey	Pro Controller.
1	NpadHandheld	Joy-Con controller in handheld mode.
2	NpadJoyDual	Joy-Con controller in dual mode.
3	NpadJoyLeft	Joy-Con left controller in single mode.
4	NpadJoyRight	Joy-Con right controller in single mode.
5	NpadGc	GameCube controller.
6	NpadPalma	Poké Ball Plus controller.
7	NpadLark	NES controller.
8	NpadHandheldLark	NES controller in handheld mode.
9-28	Reserved
29	NpadSystemExt
30	NpadSystem
31	Reserved

NpadIdType

This is an u32. This is the controller index used in sharedmem. 0x20 is handheld.

hid:dbg

This is "nn::hid::IHidDebugServer".

Cmd	Name
0	DeactivateDebugPad
1	SetDebugPadAutoPilotState
2	UnsetDebugPadAutoPilotState
10	DeactivateTouchScreen
11	SetTouchScreenAutoPilotState
12	UnsetTouchScreenAutoPilotState
20	DeactivateMouse
21	SetMouseAutoPilotState
22	UnsetMouseAutoPilotState
30	DeactivateKeyboard
31	SetKeyboardAutoPilotState
32	UnsetKeyboardAutoPilotState
50	DeactivateXpad
51	SetXpadAutoPilotState
52	UnsetXpadAutoPilotState
60	DeactivateJoyXpad
91	DeactivateGesture
110	DeactivateHomeButton
111	SetHomeButtonAutoPilotState
112	UnsetHomeButtonAutoPilotState
120	DeactivateSleepButton
121	SetSleepButtonAutoPilotState
122	UnsetSleepButtonAutoPilotState
123	DeactivateInputDetector
130	DeactivateCaptureButton
131	SetCaptureButtonAutoPilotState
132	UnsetCaptureButtonAutoPilotState
133	SetShiftAccelerometerCalibrationValue
134	GetShiftAccelerometerCalibrationValue
135	SetShiftGyroscopeCalibrationValue
136	GetShiftGyroscopeCalibrationValue
140	DeactivateConsoleSixAxisSensor
141	[5.0.0+] GetConsoleSixAxisSensorSamplingFrequency
142	[5.0.0+] DeactivateSevenSixAxisSensor
143	[6.0.0+] GetConsoleSixAxisSensorCountStates
201	ActivateFirmwareUpdate
202	DeactivateFirmwareUpdate
203	StartFirmwareUpdate
204	GetFirmwareUpdateStage
205	GetFirmwareVersion
206	GetDestinationFirmwareVersion
207	DiscardFirmwareInfoCacheForRevert
208	StartFirmwareUpdateForRevert
209	GetAvailableFirmwareVersionForRevert
210	[4.0.0+] IsFirmwareUpdatingDevice
211	[6.0.0+] StartFirmwareUpdateIndividual
215	[6.0.0+] SetUsbFirmwareForceUpdateEnabled
216	[6.0.0+] SetAllKuinaDevicesToFirmwareUpdateMode
221	UpdateControllerColor
222	[4.0.0+] ConnectUsbPadsAsync
223	[4.0.0+] DisconnectUsbPadsAsync
224	[5.0.0+] UpdateDesignInfo
225	[5.0.0+] GetUniquePadDriverState
226	[5.0.0+] GetSixAxisSensorDriverStates
227	[?+] GetRxPacketHistory
228	[6.0.0+] AcquireOperationEventHandle
229	[6.0.0+] ReadSerialFlash
230	[6.0.0+] WriteSerialFlash
231	[6.0.0+] GetOperationResult
232	[6.0.0+] EnableShipmentMode
233	[6.0.0+] ClearPairingInfo
234	[6.0.0+] GetUniquePadDeviceTypeSetInternal
235	[7.0.0+] EnableAnalogStickPower
301	[5.0.0+] GetAbstractedPadHandles
302	[5.0.0+] GetAbstractedPadState
303	[5.0.0+] GetAbstractedPadsState
321	[5.0.0+] SetAutoPilotVirtualPadState
322	[5.0.0+] UnsetAutoPilotVirtualPadState
323	[5.0.0+] UnsetAllAutoPilotVirtualPadState
324	[7.0.0+] AttachHdlsWorkBuffer
325	[7.0.0+] ReleaseHdlsWorkBuffer
326	[7.0.0+] DumpHdlsNpadAssignmentState
327	[7.0.0+] DumpHdlsStates
328	[7.0.0+] ApplyHdlsNpadAssignmentState
329	[7.0.0+] ApplyHdlsStateList
330	[7.0.0+] AttachHdlsVirtualDevice
331	[7.0.0+] DetachHdlsVirtualDevice
332	[7.0.0+] SetHdlsState
350	[5.0.0+] AddRegisteredDevice
400	[6.0.0+] DisableExternalMcuOnNxDevice
401	[6.0.0+] DisableRailDeviceFiltering

hid:sys

This is "nn::hid::IHidSystemServer".

Cmd	Name
31	SendKeyboardLockKeyEvent
101	AcquireHomeButtonEventHandle
111	ActivateHomeButton
121	AcquireSleepButtonEventHandle
131	ActivateSleepButton
141	AcquireCaptureButtonEventHandle
151	ActivateCaptureButton
161	[7.0.0+] GetPlatformConfig
210	AcquireNfcDeviceUpdateEventHandle
211	GetNpadsWithNfc
212	AcquireNfcActivateEventHandle
213	ActivateNfc
214	[4.0.0+] GetXcdHandleForNpadWithNfc
215	[4.0.0+] IsNfcActivated
230	AcquireIrSensorEventHandle
231	ActivateIrSensor
301	ActivateNpadSystem
303	ApplyNpadSystemCommonPolicy
304	EnableAssigningSingleOnSlSrPress
305	DisableAssigningSingleOnSlSrPress
306	GetLastActiveNpad
307	GetNpadSystemExtStyle
308	[5.0.0+] ApplyNpadSystemCommonPolicyFull
309	[5.0.0+] GetNpadFullKeyGripColor
310	[6.0.0+] GetMaskedSupportedNpadStyleSet
311	SetNpadPlayerLedBlinkingDevice
312	[6.0.0+] SetSupportedNpadStyleSetAll
321	GetUniquePadsFromNpad
322	GetIrSensorState
323	GetXcdHandleForNpadWithIrSensor
500	SetAppletResourceUserId
501	RegisterAppletResourceUserId
502	UnregisterAppletResourceUserId
503	EnableAppletToGetInput
504	SetAruidValidForVibration
505	EnableAppletToGetSixAxisSensor
510	#SetVibrationMasterVolume
511	GetVibrationMasterVolume
512	BeginPermitVibrationSession
513	EndPermitVibrationSession
520	EnableHandheldHids
521	DisableHandheldHids
540	AcquirePlayReportControllerUsageUpdateEvent
541	GetPlayReportControllerUsages
542	AcquirePlayReportRegisteredDeviceUpdateEvent
543	GetRegisteredDevicesOld ([1.0.0-4.1.0] GetRegisteredDevices)
544	AcquireConnectionTriggerTimeoutEvent
545	SendConnectionTrigger
546	AcquireDeviceRegisteredEventForControllerSupport
547	GetAllowedBluetoothLinksCount
548	[5.0.0+] GetRegisteredDevices
549	[6.0.0+] GetConnectableRegisteredDevices
700	ActivateUniquePad
702	AcquireUniquePadConnectionEventHandle
703	GetUniquePadIds
751	AcquireJoyDetachOnBluetoothOffEventHandle
800	ListSixAxisSensorHandles
801	IsSixAxisSensorUserCalibrationSupported
802	ResetSixAxisSensorCalibrationValues
803	StartSixAxisSensorUserCalibration
804	CancelSixAxisSensorUserCalibration
805	GetUniquePadBluetoothAddress
806	DisconnectUniquePad
807	[5.0.0+] GetUniquePadType
808	[5.0.0+] GetUniquePadInterface
809	[5.0.0+] GetUniquePadSerialNumber
810	[5.0.0+] GetUniquePadControllerNumber
811	[5.0.0+] GetSixAxisSensorUserCalibrationStage
821	StartAnalogStickManualCalibration
822	RetryCurrentAnalogStickManualCalibrationStage
823	CancelAnalogStickManualCalibration
824	ResetAnalogStickManualCalibration
825	[5.0.0+] GetAnalogStickState
826	[5.0.0+] GetAnalogStickManualCalibrationStage
827	[5.0.0+] IsAnalogStickButtonPressed
828	[5.0.0+] IsAnalogStickInReleasePosition
829	[5.0.0+] IsAnalogStickInCircumference
830	[7.0.0+] SetNotificationLedPattern
850	IsUsbFullKeyControllerEnabled
851	EnableUsbFullKeyController
852	IsUsbConnected
870	[5.1.0+] IsHandheldButtonPressedOnConsoleMode
900	ActivateInputDetector
901	#NotifyInputDetector
1000	InitializeFirmwareUpdate
1001	GetFirmwareVersion
1002	GetAvailableFirmwareVersion
1003	IsFirmwareUpdateAvailable
1004	CheckFirmwareUpdateRequired
1005	StartFirmwareUpdate
1006	AbortFirmwareUpdate
1007	GetFirmwareUpdateState
1008	[4.0.0+] ActivateAudioControl
1009	[4.0.0+] AcquireAudioControlEventHandle
1010	[4.0.0+] GetAudioControlStates
1011	[4.0.0+] DeactivateAudioControl
1050	[5.0.0+] IsSixAxisSensorAccurateUserCalibrationSupported
1051	[5.0.0+] StartSixAxisSensorAccurateUserCalibration
1052	[5.0.0+] CancelSixAxisSensorAccurateUserCalibration
1053	[5.0.0+] GetSixAxisSensorAccurateUserCalibrationState
1100	[5.0.0+] GetHidbusSystemServiceObject
1120	[6.0.0+] SetFirmwareHotfixUpdateSkipEnabled
1130	[6.0.0+] InitializeUsbFirmwareUpdate
1131	[6.0.0+] FinalizeUsbFirmwareUpdate
1132	[6.0.0+] CheckUsbFirmwareUpdateRequired
1133	[6.0.0+] StartUsbFirmwareUpdate
1134	[6.0.0+] GetUsbFirmwareUpdateState

SetVibrationMasterVolume

Takes an input 32bit float.

NotifyInputDetector

Takes an input u32 bitmask InputSourceId, no output.

This is the only hid:sys command used by USB-sysmodule (with value 0x40).

hid:tmp

This is "nn::hid::IHidTemporaryServer".

Cmd	Name
0	GetConsoleSixAxisSensorCalibrationValues

irs

This is "nn::irsensor::IIrSensorServer".

Cmd	Name
302	#ActivateIrsensor
303	#DeactivateIrsensor
304	#GetIrsensorSharedMemoryHandle
305	#StopImageProcessor
306	#RunMomentProcessor
307	#RunClusteringProcessor
308	#RunImageTransferProcessor
309	#GetImageTransferProcessorState
310	#RunTeraPluginProcessor
311	#GetNpadIrCameraHandle
312	#RunPointingProcessor
313	#SuspendImageProcessor
314	[3.0.0+] #CheckFirmwareVersion
315	[5.0.0+] SetFunctionLevel
316	[5.0.0+] RunImageTransferExProcessor
317	[5.0.0+] RunIrLedProcessor
318	[5.0.0+] StopImageProcessorAsync
319	[5.0.0+] ActivateIrsensorWithFunctionLevel

ActivateIrsensor

Takes a PID-descriptor and an AppletResourceUserId. No output.

DeactivateIrsensor

Takes a PID-descriptor and an AppletResourceUserId. No output.

GetIrsensorSharedMemoryHandle

Takes a PID-descriptor and an AppletResourceUserId. Returns a SharedMemory handle.

The SharedMemory is mapped with permissions=read-only and size=0x8000.

StopImageProcessor

Takes a PID-descriptor, an #IrCameraHandle, and an AppletResourceUserId. No output.

RunMomentProcessor

Takes a PID-descriptor, an #IrCameraHandle, an AppletResourceUserId, and a #PackedMomentProcessorConfig. No output.

RunClusteringProcessor

Takes a PID-descriptor, an #IrCameraHandle, an AppletResourceUserId, and a #PackedClusteringProcessorConfig. No output.

RunImageTransferProcessor

Takes a PID-descriptor, an #IrCameraHandle, an AppletResourceUserId, a #PackedImageTransferProcessorConfig, an u64 for the TransferMemory_size, and a TransferMemory handle. No output.

Official sw creates the TransferMemory with an user-specified buffer and permissions=0.

GetImageTransferProcessorState

Takes a PID-descriptor, a type-0x6 output buffer, an #IrCameraHandle, and an AppletResourceUserId. Returns an #ImageTransferProcessorState. No output.

RunTeraPluginProcessor

Takes a PID-descriptor, an #IrCameraHandle, a #PackedTeraPluginProcessorConfig (immediately after the previous word), and an AppletResourceUserId. No output.

GetNpadIrCameraHandle

Takes an input u32. Returns an output #IrCameraHandle.

RunPointingProcessor

Takes a PID-descriptor, an #IrCameraHandle, a #PackedDpdProcessorConfig (immediately after the previous word), and an AppletResourceUserId. No output.

SuspendImageProcessor

Takes a PID-descriptor, an #IrCameraHandle, and an AppletResourceUserId. No output.

CheckFirmwareVersion

Takes a PID-descriptor, an #IrCameraHandle, a #PackedMcuVersion, and an AppletResourceUserId. No output.

IrCameraHandle

This is an u32.

PackedMomentProcessorConfig

This is a 0x20-byte struct. This is converted from another structure by the official user-process.

Offset	Size	Description	DefaultConfig
0x0	0x8	?	0x493E0
0x8	0x1	?	0x0
0x9	0x1	?	0x8
0xA	0x1	?	0x0
0xB	0x5	Padding
0x10	0x8	u16, u32, u16	{Not written}, 0x1400000, 0xF0
0x18	0x4	Hard-coded to 0xA0003.
0x1C	0x1	?	0x1
0x1D	0x1	?	0x50
0x1E	0x2	Padding

PackedClusteringProcessorConfig

This is a 0x28-byte struct.

PackedImageTransferProcessorConfig

This is a 0x18-byte struct. This is converted from another structure by the official user-process. The conversion is the same as PackedMomentProcessorConfig, except the code using out +0x1C/+0x1D was removed, and the constant is now located at out+0x10. The code which wrote to out u64 +0x10 from in+0x24 was replaced with code which writes an u8 to out+0x14.

ImageTransferProcessorState

This is a 0x10-byte struct.

PackedTeraPluginProcessorConfig

This is an u64.

PackedDpdProcessorConfig

This is a 0x10-byte struct.

PackedMcuVersion

This is an u32.

irs:sys

This is "nn::irsensor::IIrSensorSystemServer".

Cmd	Name
500	SetAppletResourceUserId
501	RegisterAppletResourceUserId
502	UnregisterAppletResourceUserId
503	EnableAppletToGetInput

ahid:cd

This is "nn::ahid::IServerSession".

Used for USB HID devices.

Cmd	Name	Notes
0		Takes an input s32, no output.
1		Takes an input s32, no output.
2		Takes an input u32, returns an #ICtrlSession.
3		Takes an input u32, returns an #IReadSession.
4		Takes an input u32, returns an #IWriteSession.

ICtrlSession

This is "nn::ahid::ICtrlSession".

Cmd	Name	Notes
0
1
2
3
4
5
6
7
8
9
10
11

All of these use USB CtrlXfer, except for cmd10-11 which are event(?) related, and cmd1 which copies 0x4000-bytes from state to output.

IReadSession

This is "nn::ahid::IReadSession".

Cmd	Name	Notes
0

Cmd0 uses PostBufferAsync etc with the INPUT endpoint. The size must be <=0x1000. The actual transfer size is returned in an output u64. The data is copied from the tmpbuf to the output buffer using the actual-transfer-size.

IWriteSession

This is "nn::ahid::IWriteSession".

Cmd	Name	Notes
0		This is the inverse of #IReadSession cmd0. Uses the OUTPUT endpoint with an input buffer.

ahid:hdr

This is "nn::ahid::hdr::ISession".

Used internally for USB HID devices.

Cmd	Name
0
1
2
3
4
5	[6.0.0+]

xcd:sys

This is "nn::xcd::detail::ISystemServer".

Cmd	Name
0	GetDataFormat
1	SetDataFormat
2	GetMcuState
3	SetMcuState
4	GetMcuVersionForNfc
5	CheckNfcDevicePower
10	SetNfcEvent
11	GetNfcInfo
12	StartNfcDiscovery
13	StopNfcDiscovery
14	StartNtagRead
15	StartNtagWrite
16	SendNfcRawData
17	RegisterMifareKey
18	ClearMifareKey
19	StartMifareRead
20	StartMifareWrite
101	GetAwakeTriggerReasonForLeftRail
102	GetAwakeTriggerReasonForRightRail

[6.0.0+]: The buffer type used by GetNfcInfo is now 0x32 instead of 0x1A.

hidbus

This is "nn::hidbus::IHidbusServer".

Cmd	Name
1	GetBusHandle
2	IsExternalDeviceConnected
3	Initialize
4	Finalize
5	EnableExternalDevice
6	GetExternalDeviceId
7	SendCommandAsync
8	GetSendCommandAsynceResult
9	SetEventForSendCommandAsycResult
10	GetSharedMemoryHandle
11	EnableJoyPollingReceiveMode
12	DisableJoyPollingReceiveMode
[?-6.2.0] 13	GetPollingData
14	[6.0.0+] SetStatusManagerType

RomFS

The hid-sysmodule RomFS contains:

 ftmFwUpdate
   ├── NTD_4CD_1801.fts256
   ├── NTD_4CD_2602.fts256
   └── NTD_4CD_3801.fts256

These are firmware files for the touchscreen controller.

Firmware update

Starting with 3.0.0 HID-sysmodule now contains strings for data stored in title 0100000000000822.