Interface for USB Keyboard HID operations. More...

#include "../typedef.h"

Classes
struct	hid_keyboard_packet
	The standard 8-byte packet used by USB Keyboards (Boot Protocol). More...

Enumerations
enum	usb_status { USB_OK = 0 , USB_ERROR_NO_DEVICE = -1 , USB_ERROR_READ_FAIL = -2 , USB_END_OF_STREAM = -3 }
	Status codes for USB keyboard operations. More...

Functions
int	usb_keyboard_init (void)
	Initializes the keyboard subsystem.
int	usb_keyboard_read_packet (hid_keyboard_packet *out_packet)
	Reads a single HID packet from the input stream.
void	usb_keyboard_cleanup (void)
	Cleans up resources and disconnects the keyboard subsystem.

Detailed Description

Interface for USB Keyboard HID operations.

Defines the standard HID structures and function prototypes for initializing, reading from, and cleaning up a virtual or physical USB keyboard interface.

Enumeration Type Documentation

◆ usb_status

enum usb_status

Status codes for USB keyboard operations.

Enumerator
USB_OK	Operation successful
USB_ERROR_NO_DEVICE	Device not found or failed to open
USB_ERROR_READ_FAIL	Failed to read packet data
USB_END_OF_STREAM	No more data available (End of Simulation)

Function Documentation

◆ usb_keyboard_cleanup()

void usb_keyboard_cleanup ( void )

Cleans up resources and disconnects the keyboard subsystem.

◆ usb_keyboard_init()

int usb_keyboard_init ( void )

Initializes the keyboard subsystem.

Returns: int 0 (USB_OK) on success, negative error code on failure.

Initializes the keyboard subsystem.

Resets the mock data index to the beginning.

Returns: int Always returns USB_OK.

◆ usb_keyboard_read_packet()

int usb_keyboard_read_packet ( hid_keyboard_packet * out_packet )

Reads a single HID packet from the input stream.

Parameters

out_packet Pointer to the structure where the packet data will be written.

Returns: int 0 (USB_OK) on success, or error code.

Reads a single HID packet from the input stream.

Simulates a USB polling delay using Sleep(100).

Parameters

out_packet Destination for the key data.

Returns: int USB_OK on success, USB_END_OF_STREAM when data is exhausted.

Classes

Enumerations