hid.c File Reference

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <locale.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <fcntl.h>
#include <poll.h>
#include <linux/hidraw.h>
#include <linux/version.h>
#include <linux/input.h>
#include <libudev.h>
#include "hidapi.h"

Classes
struct	hid_device_
Defines
#define	HIDIOCSFEATURE(len)   _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
#define	HIDIOCGFEATURE(len)   _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
Enumerations
enum	device_string_id { DEVICE_STRING_MANUFACTURER, DEVICE_STRING_PRODUCT, DEVICE_STRING_SERIAL, DEVICE_STRING_COUNT }
Functions
hid_device *	new_hid_device ()
static void	register_error (hid_device *device, const char *op)
static wchar_t *	utf8_to_wchar_t (const char *utf8)
static wchar_t *	copy_udev_string (struct udev_device *dev, const char *udev_name)
static int	uses_numbered_reports (__u8 *report_descriptor, __u32 size)
int	parse_uevent_info (const char *uevent, int *bus_type, unsigned short *vendor_id, unsigned short *product_id, char **serial_number_utf8, char **product_name_utf8)
static int	get_device_string (hid_device *dev, enum device_string_id key, wchar_t *string, size_t maxlen)
int HID_API_EXPORT	hid_init (void)
	Initialize the HIDAPI library.
int HID_API_EXPORT	hid_exit (void)
	Finalize the HIDAPI library.
struct hid_device_info HID_API_EXPORT *	hid_enumerate (unsigned short vendor_id, unsigned short product_id)
	Enumerate the HID Devices.
void HID_API_EXPORT	hid_free_enumeration (struct hid_device_info *devs)
	Free an enumeration Linked List.
hid_device *	hid_open (unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
	Open a HID device using a Vendor ID (VID), Product ID (PID) and optionally a serial number.
hid_device *HID_API_EXPORT	hid_open_path (const char *path)
	Open a HID device by its path name.
int HID_API_EXPORT	hid_write (hid_device *dev, const unsigned char *data, size_t length)
	Write an Output report to a HID device.
int HID_API_EXPORT	hid_read_timeout (hid_device *dev, unsigned char *data, size_t length, int milliseconds)
	Read an Input report from a HID device with timeout.
int HID_API_EXPORT	hid_read (hid_device *dev, unsigned char *data, size_t length)
	Read an Input report from a HID device.
int HID_API_EXPORT	hid_set_nonblocking (hid_device *dev, int nonblock)
	Set the device handle to be non-blocking.
int HID_API_EXPORT	hid_send_feature_report (hid_device *dev, const unsigned char *data, size_t length)
	Send a Feature report to the device.
int HID_API_EXPORT	hid_get_feature_report (hid_device *dev, unsigned char *data, size_t length)
	Get a feature report from a HID device.
void HID_API_EXPORT	hid_close (hid_device *dev)
	Close a HID device.
int HID_API_EXPORT_CALL	hid_get_manufacturer_string (hid_device *dev, wchar_t *string, size_t maxlen)
	Get The Manufacturer String from a HID device.
int HID_API_EXPORT_CALL	hid_get_product_string (hid_device *dev, wchar_t *string, size_t maxlen)
	Get The Product String from a HID device.
int HID_API_EXPORT_CALL	hid_get_serial_number_string (hid_device *dev, wchar_t *string, size_t maxlen)
	Get The Serial Number String from a HID device.
int HID_API_EXPORT_CALL	hid_get_indexed_string (hid_device *dev, int string_index, wchar_t *string, size_t maxlen)
	Get a string from a HID device, based on its string index.
HID_API_EXPORT const wchar_t *HID_API_CALL	hid_error (hid_device *dev)
	Get a string describing the last error which occurred.
Variables
const char *	device_string_names []
static __u32	kernel_version = 0

---

Define Documentation

#define HIDIOCGFEATURE

(

len

)

_IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)

#define HIDIOCSFEATURE

(

len

)

_IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)

---

Enumeration Type Documentation

enum device_string_id

Enumerator:

DEVICE_STRING_MANUFACTURER
DEVICE_STRING_PRODUCT
DEVICE_STRING_SERIAL
DEVICE_STRING_COUNT

---

Function Documentation

static wchar_t* copy_udev_string	(	struct udev_device *	dev,
		const char *	udev_name
	)		[static]

static int get_device_string	(	hid_device *	dev,
		enum device_string_id	key,
		wchar_t *	string,
		size_t	maxlen
	)		[static]

hid_device* new_hid_device

(

)

int parse_uevent_info	(	const char *	uevent,
		int *	bus_type,
		unsigned short *	vendor_id,
		unsigned short *	product_id,
		char **	serial_number_utf8,
		char **	product_name_utf8
	)

type vendor product HID_ID=0003:000005AC:00008242

static void register_error	(	hid_device *	device,
		const char *	op
	)		[static]

static int uses_numbered_reports	(	__u8 *	report_descriptor,
		__u32	size
	)		[static]

static wchar_t* utf8_to_wchar_t

(

const char *

utf8

)

[static]

---

Variable Documentation

const char* device_string_names[]

Initial value:

 {
     "manufacturer",
     "product",
     "serial",
}

__u32 kernel_version = 0 [static]