Native USB host-side HID (Human Interface Device) class layer. More...

#include <stdint.h>
#include "ra8_err.h"
#include "ra8_usb.h"

Include dependency graph for ra8_usb_hhid.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	ra8_usb_hhid_device_t
	Snapshot of the attached HID device, passed to the attach callback. More...

Typedefs
typedef void(*	ra8_usb_hhid_attach_fn_t) (void ctx, const ra8_usb_hhid_device_t device)
	Attach-callback signature.

Enumerations
enum	ra8_usb_hhid_pipe_t : uint8_t { k_ra8_hhid_pipe_intr_in = 6U , k_ra8_hhid_pipe_intr_out = 7U }
	PIPE numbers used by the host-HID driver for the attached peripheral's interrupt endpoints. More...
enum	ra8_usb_hhid_packet_t : uint16_t { k_ra8_hhid_intr_max_packet_default = 8U , k_ra8_hhid_intr_max_packet_fs = 64U , k_ra8_hhid_intr_max_packet_hs = 1024U }
	Packet sizing for the attached device's interrupt endpoints. More...
enum	ra8_usb_hhid_class_t : uint8_t { k_ra8_hhid_class_hid = 0x03U , k_ra8_hhid_subclass_none = 0x00U , k_ra8_hhid_subclass_boot = 0x01U , k_ra8_hhid_protocol_other = 0x00U , k_ra8_hhid_protocol_keyboard = 0x01U , k_ra8_hhid_protocol_mouse = 0x02U }
	Class / subclass / protocol triplet that identifies an HID function within an attached USB device's descriptor walk. More...
enum	ra8_usb_hhid_request_t : uint8_t { k_ra8_hhid_req_get_report = 0x01U , k_ra8_hhid_req_get_idle = 0x02U , k_ra8_hhid_req_get_protocol = 0x03U , k_ra8_hhid_req_set_report = 0x09U , k_ra8_hhid_req_set_idle = 0x0AU , k_ra8_hhid_req_set_protocol = 0x0BU }
	HID class-specific request codes the host issues to the attached device. More...
enum	ra8_usb_hhid_report_type_t : uint8_t { k_ra8_hhid_report_type_input = 0x01U , k_ra8_hhid_report_type_output = 0x02U , k_ra8_hhid_report_type_feature = 0x03U }
	HID report-type selector encoded in wValue's high byte for GET_REPORT / SET_REPORT. More...
enum	ra8_usb_hhid_protocol_select_t : uint8_t { k_ra8_hhid_proto_boot = 0U , k_ra8_hhid_proto_report = 1U }
	wValue payload for SET_PROTOCOL. More...
enum	ra8_usb_hhid_desc_t : uint8_t { k_ra8_hhid_desc_hid = 0x21U , k_ra8_hhid_desc_report = 0x22U , k_ra8_hhid_desc_physical = 0x23U }
	HID-specific descriptor types (USB HID 1.11 sec 7.1). More...
enum	ra8_usb_hhid_report_buf_t : uint16_t { k_ra8_hhid_report_desc_max = 256U }
	Compile-time ceiling on the cached HID Report descriptor. More...

Functions
ra8_err_t	ra8_usb_hhid_init (ra8_usb_speed_t speed)
	Bring up the host-HID driver on a chosen USB controller.
ra8_err_t	ra8_usb_hhid_close (void)
	Tear down the host-HID driver and release the controller.
ra8_err_t	ra8_usb_hhid_attach_callback (ra8_usb_hhid_attach_fn_t on_attach, void *ctx)
	Register (or detach) the attach callback.
ra8_err_t	ra8_usb_hhid_get_report (ra8_usb_hhid_report_type_t target_report_type, uint8_t target_report_id, uint8_t out_buf, uint16_t max_len, uint16_t got_len)
	Issue GET_REPORT (USB HID 1.11 sec 7.2.1) over the DCP.
ra8_err_t	ra8_usb_hhid_set_report (ra8_usb_hhid_report_type_t target_report_type, uint8_t target_report_id, const uint8_t *in_buf, uint16_t len)
	Issue SET_REPORT (USB HID 1.11 sec 7.2.2) over the DCP.
ra8_err_t	ra8_usb_hhid_set_idle (uint8_t duration, uint8_t report_id)
	Issue SET_IDLE (USB HID 1.11 sec 7.2.4) over the DCP.
ra8_err_t	ra8_usb_hhid_set_protocol (ra8_usb_hhid_protocol_select_t boot_or_report)
	Issue SET_PROTOCOL (USB HID 1.11 sec 7.2.6) over the DCP.
ra8_err_t	ra8_usb_hhid_get_input_report (uint8_t out_buf, uint16_t max_len, uint16_t got_len)
	Drain the next input report from the interrupt-IN pipe.
ra8_err_t	ra8_usb_hhid_step (void)
	Drive the enumeration step machine forward by one step.

Detailed Description

Native USB host-side HID (Human Interface Device) class layer.

Glues the host-mode bring-up paths in ra8_usb to a USB HID peripheral - typically a keyboard, mouse, or gamepad - attached on the EK-RA8D2's USB-host port. Mirrors FSP's r_usb_hhid host-HID class flow but compiled as part of this tree with no FSP / CherryUSB / TinyUSB binaries pulled in.

Lifecycle (mirrors ra8_usb_hcdc.h / ra8_usb_hmsc.h shape):

ra8_usb_hhid_init(speed) flips the controller to host mode, primes the internal step machine to idle, and leaves the bus in the "wait for attach" state (UACT cleared).
The driver runs the chapter-9 enumeration step machine (Reset -> SET_ADDRESS -> GET_DEVICE_DESCRIPTOR -> GET_CONFIG_DESCRIPTOR -> SET_CONFIG -> SET_INTERFACE) over the DCP, walks the configuration descriptor for the HID interface (class=0x03), pulls out the interrupt-IN endpoint plus the HID class descriptor (descriptor type 0x21).
When enumeration completes the registered attach callback fires once with the discovered interrupt-IN pipe handle, max-packet, subclass+protocol (1=keyboard / 2=mouse / 0=other), and VID/PID.
HID class control transfers (_get_report, _set_report, _set_idle, _set_protocol) are layered on top of the DCP per USB HID 1.11 sec 7.2.
ra8_usb_hhid_get_input_report polls the interrupt-IN pipe non- blockingly to drain the next input report.
ra8_usb_hhid_close() drops bus power and releases the device.

The starter only tracks a single attached HID device; hubs and multi-interface composite HID devices are deferred follow-ups.

Reference: USB Device Class Definition for Human Interface Devices (HID) revision 1.11 (USB-IF, 2001-06-27).

Copyright: Copyright (c) 2026 Brighton Sikarskie SPDX-License-Identifier: MIT

Definition in file ra8_usb_hhid.h.

Typedef Documentation

◆ ra8_usb_hhid_attach_fn_t

typedef void(* ra8_usb_hhid_attach_fn_t) (void *ctx, const ra8_usb_hhid_device_t *device)

Attach-callback signature.

Parameters

[in]	ctx	Caller-supplied context registered with ra8_usb_hhid_attach_callback.
[in]	device	Snapshot of the attached HID device. The pointer remains valid only for the duration of the call; copy out anything you need.

Note: Invoked from the dispatch site (typically ISR context) after enumeration completes successfully.

Definition at line 215 of file ra8_usb_hhid.h.

Enumeration Type Documentation

◆ ra8_usb_hhid_class_t

enum ra8_usb_hhid_class_t : uint8_t

Class / subclass / protocol triplet that identifies an HID function within an attached USB device's descriptor walk.

Numbered from the USB-IF "Class Codes" registry and USB HID 1.11 sec 4.2 "Subclass". Subclass 1 = "Boot Interface Subclass", protocol 1 = keyboard, protocol 2 = mouse.

Enumerator
k_ra8_hhid_class_hid	HID interface class.
k_ra8_hhid_subclass_none	No subclass.
k_ra8_hhid_subclass_boot	Boot Interface Subclass.
k_ra8_hhid_protocol_other	Non keyboard / mouse.
k_ra8_hhid_protocol_keyboard	Boot keyboard.
k_ra8_hhid_protocol_mouse	Boot mouse.

Definition at line 99 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_desc_t

enum ra8_usb_hhid_desc_t : uint8_t

HID-specific descriptor types (USB HID 1.11 sec 7.1).

Enumerator
k_ra8_hhid_desc_hid	HID class descriptor.
k_ra8_hhid_desc_report	HID Report descriptor.
k_ra8_hhid_desc_physical	HID Physical descriptor.

Definition at line 154 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_packet_t

enum ra8_usb_hhid_packet_t : uint16_t

Packet sizing for the attached device's interrupt endpoints.

Per USB HID 1.11 sec 8.2 "Maximum Packet Size", a low- / full-speed HID interrupt endpoint is at most 64 bytes, and a high- speed one is at most 1024 bytes. Most keyboards / mice land at 8.

Enumerator
k_ra8_hhid_intr_max_packet_default	Boot-protocol default.
k_ra8_hhid_intr_max_packet_fs	FS ceiling.
k_ra8_hhid_intr_max_packet_hs	HS ceiling.

Definition at line 84 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_pipe_t

enum ra8_usb_hhid_pipe_t : uint8_t

PIPE numbers used by the host-HID driver for the attached peripheral's interrupt endpoints.

FSP / RA8D2 PIPE assignment rules constrain interrupt pipes to PIPE6..PIPE9. The host-HID class only uses two pipes: an interrupt-IN pipe to drain input reports, and an optional interrupt-OUT pipe (used by some keyboards for LED state). See USB HID 1.11 sec 4.4 "Interrupt Pipes".

Enumerator
k_ra8_hhid_pipe_intr_in	PIPE6 -> attached EP intr IN.
k_ra8_hhid_pipe_intr_out	PIPE7 -> attached EP intr OUT.

Definition at line 71 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_protocol_select_t

enum ra8_usb_hhid_protocol_select_t : uint8_t

wValue payload for SET_PROTOCOL.

Per USB HID 1.11 sec 7.2.6 "Set_Protocol Request". 0 = boot protocol, 1 = report protocol.

Enumerator
k_ra8_hhid_proto_boot	Boot protocol.
k_ra8_hhid_proto_report	Report protocol.

Definition at line 145 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_report_buf_t

enum ra8_usb_hhid_report_buf_t : uint16_t

Compile-time ceiling on the cached HID Report descriptor.

The HID spec puts an absolute ceiling at 65535 bytes (wDescriptorLength is 16-bit), but real-world HID descriptors are essentially always under 256 bytes. We pick a small-but-generous ceiling here so the starter doesn't carry a kilobyte of zeroes around.

Enumerator
k_ra8_hhid_report_desc_max	Cached Report desc max len.

Definition at line 170 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_report_type_t

enum ra8_usb_hhid_report_type_t : uint8_t

HID report-type selector encoded in wValue's high byte for GET_REPORT / SET_REPORT.

Per USB HID 1.11 sec 7.2.1 "Get_Report Request".

Enumerator
k_ra8_hhid_report_type_input	Input report.
k_ra8_hhid_report_type_output	Output report.
k_ra8_hhid_report_type_feature	Feature report.

Definition at line 132 of file ra8_usb_hhid.h.

◆ ra8_usb_hhid_request_t

enum ra8_usb_hhid_request_t : uint8_t

HID class-specific request codes the host issues to the attached device.

Per USB HID 1.11 sec 7.2 "Class-Specific Requests". Values match the standard HID class request register.

Enumerator
k_ra8_hhid_req_get_report	GET_REPORT.
k_ra8_hhid_req_get_idle	GET_IDLE.
k_ra8_hhid_req_get_protocol	GET_PROTOCOL.
k_ra8_hhid_req_set_report	SET_REPORT.
k_ra8_hhid_req_set_idle	SET_IDLE.
k_ra8_hhid_req_set_protocol	SET_PROTOCOL.

Definition at line 116 of file ra8_usb_hhid.h.

Function Documentation

◆ ra8_usb_hhid_attach_callback()

ra8_err_t ra8_usb_hhid_attach_callback	(	ra8_usb_hhid_attach_fn_t	on_attach,
		void *	ctx )

nodiscard

Register (or detach) the attach callback.

The supplied callback fires exactly once per attach event, after the descriptor walk identifies an HID interface (class=0x03) and the matching interrupt-IN endpoint and HID class descriptor are cached. Pass NULL to detach.

Parameters

[in]	on_attach	Callback. NULL detaches.
[in]	ctx	Context pointer threaded back into on_attach.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Callback installed.
k_ra8_err_invalid_state	Driver was never initialized.

Precondition: ra8_usb_hhid_init has run.

Postcondition: On a subsequent attach, on_attach(ctx, &device) fires once.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 700 of file ra8_usb_hhid.c.

References k_ra8_err_invalid_state, k_ra8_ok, and s_state.

◆ ra8_usb_hhid_close()

ra8_err_t ra8_usb_hhid_close ( void )

nodiscard

Tear down the host-HID driver and release the controller.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Released.
k_ra8_err_invalid_state	Driver was never initialized.

Precondition: Single-threaded shutdown context.

Postcondition: ra8_usb_host_deinit ran; SOF generation halted; bus power dropped; subsequent host-HID API calls return k_ra8_err_invalid_state.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 679 of file ra8_usb_hhid.c.

References k_ra8_err_invalid_state, k_ra8_hhid_step_idle, ra8_usb_host_deinit(), ra8_usb_host_set_uact(), and s_state.

◆ ra8_usb_hhid_get_input_report()

ra8_err_t ra8_usb_hhid_get_input_report	(	uint8_t *	out_buf,
		uint16_t	max_len,
		uint16_t *	got_len )

nodiscard

Drain the next input report from the interrupt-IN pipe.

Polling / non-blocking. Pulls bytes from the configured PIPE6 (interrupt IN) into out_buf. Returns k_ra8_err_no_data if the pipe has no bytes ready.

Parameters

[out]	out_buf	Destination buffer.
[in]	max_len	Capacity of out_buf, > 0.
[out]	got_len	Receives the number of bytes actually placed.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Bytes drained; *got_len reflects the count.
k_ra8_err_no_data	Pipe was empty.
k_ra8_err_null_ptr	out_buf or got_len was NULL.
k_ra8_err_invalid_state	Driver not initialized, or no device attached.
k_ra8_err_invalid_arg	max_len == 0.

Precondition: ra8_usb_hhid_init succeeded.; Attach callback already fired.

Postcondition: On success *got_len reflects the actual byte count.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 961 of file ra8_usb_hhid.c.

References k_ra8_err_invalid_arg, k_ra8_err_invalid_state, k_ra8_hhid_pipe_intr_in, k_ra8_ok, RA8_CHECK_NULL_PTR, ra8_usb_queue_out(), s_state, and s_tag.

◆ ra8_usb_hhid_get_report()

ra8_err_t ra8_usb_hhid_get_report	(	ra8_usb_hhid_report_type_t	target_report_type,
		uint8_t	target_report_id,
		uint8_t *	out_buf,
		uint16_t	max_len,
		uint16_t *	got_len )

nodiscard

Issue GET_REPORT (USB HID 1.11 sec 7.2.1) over the DCP.

Builds an 8-byte SETUP packet with bmRequestType = 0xA1 (Class | Interface | Device-to-Host), bRequest = 0x01 (GET_REPORT), and wValue = (report_type << 8) | report_id. Hands it to ra8_usb_host_setup_request; the controller drives the data + status stages.

Parameters

[in]	target_report_type	Input / Output / Feature.
[in]	target_report_id	Report ID (0 if the device uses a single unnamed report).
[out]	out_buf	Destination buffer for the report payload.
[in]	max_len	Capacity of out_buf, > 0.
[out]	got_len	Receives the number of bytes actually received.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Control transfer queued; on completion *got_len reflects the count.
k_ra8_err_null_ptr	out_buf or got_len was NULL.
k_ra8_err_invalid_state	Driver not initialized, or no device attached.
k_ra8_err_invalid_arg	Bogus target_report_type or max_len == 0.
k_ra8_err_busy	Controller busy with a prior SETUP.

Precondition: ra8_usb_hhid_init succeeded.; Attach callback already fired.

Postcondition: On success the SETUP mirror registers hold the GET_REPORT request envelope.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 820 of file ra8_usb_hhid.c.

References internal_dcp_in_drain(), internal_pick_regs(), internal_report_type_ok(), k_ra8_err_invalid_arg, k_ra8_err_invalid_state, k_ra8_hhid_bm_class_iface_in, k_ra8_hhid_req_get_report, k_ra8_hhid_shift_byte1, k_ra8_ok, RA8_CHECK_NULL_PTR, ra8_usb_host_setup_request(), s_state, and s_tag.

◆ ra8_usb_hhid_init()

ra8_err_t ra8_usb_hhid_init ( ra8_usb_speed_t speed )

nodiscard

Bring up the host-HID driver on a chosen USB controller.

Initialises the underlying ra8_usb driver in HOST mode for speed, leaves the bus in the "wait for attach" state (UACT cleared), and arms the internal enumeration step machine.

Parameters

[in] speed Which USB controller (FS or HS).

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Host-HID ready, awaiting attach.
k_ra8_err_invalid_arg	speed out of range.
k_ra8_err_hw_init_failed	Underlying ra8_usb_host_init failed.

Precondition: Single-threaded init context.; ra8_mstp_init and ra8_pwr_init already ran.

Postcondition: ra8_usb_host_init succeeded for speed.; Internal step machine armed; attach callback has not fired.

Note: Not thread-safe.

See also: ra8_usb_hhid_attach_callback; ra8_usb_hhid_close

Since: 0.1.0

Definition at line 656 of file ra8_usb_hhid.c.

References k_ra8_err_hw_init_failed, k_ra8_err_invalid_arg, k_ra8_hhid_step_idle, k_ra8_ok, k_ra8_usb_speed_fs, k_ra8_usb_speed_hs, ra8_log_error_val, ra8_log_info_val, ra8_usb_host_init(), s_state, and s_tag.

◆ ra8_usb_hhid_set_idle()

ra8_err_t ra8_usb_hhid_set_idle	(	uint8_t	duration,
		uint8_t	report_id )

nodiscard

Issue SET_IDLE (USB HID 1.11 sec 7.2.4) over the DCP.

Tells the device how often to silently re-send an unchanged input report. duration is in 4 ms units (0 = "only report on change"). Builds bmRequestType = 0x21, bRequest = 0x0A, wValue = (duration << 8) | report_id.

Parameters

[in]	duration	Idle rate, in 4 ms ticks (0..255).
[in]	report_id	Report ID, or 0 for "all reports".

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Control transfer queued.
k_ra8_err_invalid_state	Driver not initialized, or no device attached.
k_ra8_err_busy	Controller busy with a prior SETUP.

Precondition: ra8_usb_hhid_init succeeded.; Attach callback already fired.

Postcondition: On success the SETUP mirror registers hold the SET_IDLE request envelope.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 910 of file ra8_usb_hhid.c.

References k_ra8_err_invalid_state, k_ra8_hhid_bm_class_iface_out, k_ra8_hhid_req_set_idle, k_ra8_hhid_shift_byte1, ra8_usb_host_setup_request(), and s_state.

◆ ra8_usb_hhid_set_protocol()

ra8_err_t ra8_usb_hhid_set_protocol ( ra8_usb_hhid_protocol_select_t boot_or_report )

nodiscard

Issue SET_PROTOCOL (USB HID 1.11 sec 7.2.6) over the DCP.

Switches the device between boot protocol (wValue = 0) and report protocol (wValue = 1). Builds bmRequestType = 0x21, bRequest = 0x0B.

Parameters

[in] boot_or_report Boot or report protocol selector.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Control transfer queued.
k_ra8_err_invalid_state	Driver not initialized, or no device attached.
k_ra8_err_invalid_arg	boot_or_report out of range.
k_ra8_err_busy	Controller busy with a prior SETUP.

Precondition: ra8_usb_hhid_init succeeded.; Attach callback already fired.

Postcondition: On success the SETUP mirror registers hold the SET_PROTOCOL request envelope.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 935 of file ra8_usb_hhid.c.

References k_ra8_err_invalid_arg, k_ra8_err_invalid_state, k_ra8_hhid_bm_class_iface_out, k_ra8_hhid_proto_boot, k_ra8_hhid_proto_report, k_ra8_hhid_req_set_protocol, ra8_usb_host_setup_request(), and s_state.

◆ ra8_usb_hhid_set_report()

ra8_err_t ra8_usb_hhid_set_report	(	ra8_usb_hhid_report_type_t	target_report_type,
		uint8_t	target_report_id,
		const uint8_t *	in_buf,
		uint16_t	len )

nodiscard

Issue SET_REPORT (USB HID 1.11 sec 7.2.2) over the DCP.

Builds an 8-byte SETUP packet with bmRequestType = 0x21 (Class | Interface | Host-to-Device), bRequest = 0x09 (SET_REPORT), and wValue = (report_type << 8) | report_id. The data stage payload is in_buf[0..len-1].

Parameters

[in]	target_report_type	Input / Output / Feature.
[in]	target_report_id	Report ID.
[in]	in_buf	Report payload.
[in]	len	Payload length.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Control transfer queued.
k_ra8_err_null_ptr	in_buf was NULL with non-zero len.
k_ra8_err_invalid_state	Driver not initialized, or no device attached.
k_ra8_err_invalid_arg	Bogus target_report_type.
k_ra8_err_busy	Controller busy with a prior SETUP.

Precondition: ra8_usb_hhid_init succeeded.; Attach callback already fired.

Postcondition: On success the SETUP mirror registers hold the SET_REPORT request envelope.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 870 of file ra8_usb_hhid.c.

References internal_report_type_ok(), k_ra8_err_invalid_arg, k_ra8_err_invalid_state, k_ra8_err_null_ptr, k_ra8_hhid_bm_class_iface_out, k_ra8_hhid_req_set_report, k_ra8_hhid_shift_byte1, ra8_usb_host_setup_request(), and s_state.

◆ ra8_usb_hhid_step()

ra8_err_t ra8_usb_hhid_step ( void )

nodiscard

Drive the enumeration step machine forward by one step.

Test / debug entry point. The production path drives this from the ra8_usb_dispatch callback when the controller fires a CTRT or BRDY interrupt; tests call it directly to walk the state machine deterministically.

Returns: ra8_err_t error code.

Return values

k_ra8_ok	Step advanced.
k_ra8_err_invalid_state	Driver not initialized.

Precondition: ra8_usb_hhid_init succeeded.

Postcondition: Internal enumeration step counter advances by one. When the step machine reaches the terminal state the registered attach callback fires.

Note: Not thread-safe.

Since: 0.1.0

Definition at line 990 of file ra8_usb_hhid.c.

References internal_step_advance(), k_ra8_err_invalid_state, and s_state.

Data Structures

Typedefs

Enumerations

Functions

Detailed Description

Typedef Documentation

◆ ra8_usb_hhid_attach_fn_t

Enumeration Type Documentation

◆ ra8_usb_hhid_class_t

◆ ra8_usb_hhid_desc_t

◆ ra8_usb_hhid_packet_t

◆ ra8_usb_hhid_pipe_t

◆ ra8_usb_hhid_protocol_select_t

◆ ra8_usb_hhid_report_buf_t

◆ ra8_usb_hhid_report_type_t

◆ ra8_usb_hhid_request_t

Function Documentation

◆ ra8_usb_hhid_attach_callback()

◆ ra8_usb_hhid_close()

◆ ra8_usb_hhid_get_input_report()

◆ ra8_usb_hhid_get_report()

◆ ra8_usb_hhid_init()

◆ ra8_usb_hhid_set_idle()

◆ ra8_usb_hhid_set_protocol()

◆ ra8_usb_hhid_set_report()

◆ ra8_usb_hhid_step()