USBUS HID IO

USBUS HID IO interface module More...

Detailed Description

USBUS HID IO interface module

Files
file	hid_io.h
	USB HID callback and read/write functions.

Typedefs
typedef void(*	usb_hid_io_cb_t) (void *)
	USBUS HID IO RX callback function.

Functions
void	usb_hid_io_set_rx_cb (usb_hid_io_cb_t cb, void *arg)
	Set USBUS HID IO RX callback.
void	usb_hid_io_write (const void *buffer, size_t len)
	Write data to USB HID IN endpoint buffer.
int	usb_hid_io_read (void *buffer, size_t len)
	Read data from USB HID OUT endpoint (blocking)
int	usb_hid_io_read_timeout (void *buffer, size_t len, uint32_t timeout)
	Read data from USB HID OUT endpoint (with timeout, blocking)
void	usb_hid_io_init (usbus_t *usbus, const uint8_t *report_desc, size_t report_desc_size)
	Initialize an USB HID IO interface.

Typedef Documentation

usb_hid_io_cb_t

typedef void(* usb_hid_io_cb_t) (void *)

USBUS HID IO RX callback function.

Definition at line 37 of file hid_io.h.

Function Documentation

usb_hid_io_init()

void usb_hid_io_init	(	usbus_t *	usbus,
		const uint8_t *	report_desc,
		size_t	report_desc_size )

Initialize an USB HID IO interface.

Parameters

[in]	usbus	USBUS context
[in]	report_desc	USB_HID report descriptor
[in]	report_desc_size	size of USB_HID report descriptor

usb_hid_io_read()

int usb_hid_io_read	(	void *	buffer,
		size_t	len )

Read data from USB HID OUT endpoint (blocking)

Wrapper for isrpipe_read

Precondition

buffer != NULL

Parameters

[out]	buffer	buffer to read data into
[in]	len	length of buffer

Returns

Number of bytes read

usb_hid_io_read_timeout()

int usb_hid_io_read_timeout	(	void *	buffer,
		size_t	len,
		uint32_t	timeout )

Read data from USB HID OUT endpoint (with timeout, blocking)

Wrapper for isrpipe_read_timeout

Precondition

buffer != NULL

Parameters

[out]	buffer	buffer to read data into
[in]	len	length of buffer
[in]	timeout	timeout in microseconds

Returns

Number of bytes read

usb_hid_io_set_rx_cb()

void usb_hid_io_set_rx_cb	(	usb_hid_io_cb_t	cb,
		void *	arg )

Set USBUS HID IO RX callback.

Parameters

[in]	cb	callback function to use
[in]	arg	argument that will be passed to cb

usb_hid_io_write()

void usb_hid_io_write	(	const void *	buffer,
		size_t	len )

Write data to USB HID IN endpoint buffer.

Precondition

buffer != NULL

Parameters

[in]	buffer	buffer containing data to write
[in]	len	length of buffer