HID services: Difference between revisions

! Cmd || Name || Notes

| 0 || AcquireDevice || Takes an input s32, no output.

| 1 || ReleaseDevice || Takes an input s32, no output.

| 2 || GetCtrlSession || Takes an input u32, returns an [[#ICtrlSession]].

| 3 || GetReadSession || Takes an input u32, returns an [[#IReadSession]].

| [1.0.0-2.3.0] 4 || GetWriteSession || Takes an input u32, returns an [[#IWriteSession]].

! Cmd || Name || Notes

| 0 || GetString ||

| 1 || GetCodeBook ||

| 2 || GetReport ||

| 3 || SetReport ||

| 4 || GetIdle ||

| 5 || SetIdle ||

| 6 || GetProtocol ||

| 7 || SetProtocol ||

| 8 || GetDescriptor ||

| 9 || SetDescriptor ||

| 10 || GetStateChangeEvent ||

| 11 || SignalStateChangeEvent ||

| 12 || [3.0.0+] Write ||

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

! Cmd || Name || Notes

| 0 || Read ||

Cmd0 uses [[USB_services|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.

[3.0.0+] Cmd0 now takes a total of 8-bytes of input.

! Cmd || Name || Notes

| 0 || Write || This is the inverse of [[#IReadSession]] cmd0. Uses the OUTPUT endpoint with an input buffer.