USB Audio Class 2 device API

USB Audio Class 2 device API. More...

Data Structures
struct	uac2_ops
	USB Audio 2 application event handlers. More...

Macros
#define	UAC2_ENTITY_ID(node)
	Get entity ID.

Functions
void	usbd_uac2_set_ops (const struct device *dev, const struct uac2_ops *ops, void *user_data)
	Register USB Audio 2 application callbacks.
int	usbd_uac2_send (const struct device *dev, uint8_t terminal, void *data, uint16_t size)
	Send audio data to output terminal.

Detailed Description

USB Audio Class 2 device API.

Since

3.6

Version

0.1.0

Macro Definition Documentation

UAC2_ENTITY_ID

#define UAC2_ENTITY_ID

(

node

)

#include <include/zephyr/usb/class/usbd_uac2.h>

Value:

        ({                                                                      \
                BUILD_ASSERT(DT_NODE_HAS_COMPAT(DT_PARENT(node), zephyr_uac2)); \
                UTIL_INC(DT_NODE_CHILD_IDX(node));                              \
        })

Get entity ID.

Parameters

node	node identifier

Function Documentation

usbd_uac2_send()

int usbd_uac2_send	(	const struct device *	dev,
		uint8_t	terminal,
		void *	data,
		uint16_t	size
	)

#include <include/zephyr/usb/class/usbd_uac2.h>

Send audio data to output terminal.

Data buffer must be sufficiently aligned and otherwise suitable for use by UDC driver.

Note

Buffer ownership is transferred to the stack in case of success, in case of an error the caller retains the ownership of the buffer.

Parameters

dev	USB Audio 2 device
terminal	Output Terminal ID linked to AudioStreaming interface
data	Buffer containing outgoing data
size	Number of bytes to send

Returns

0 on success, negative value on error

usbd_uac2_set_ops()

void usbd_uac2_set_ops	(	const struct device *	dev,
		const struct uac2_ops *	ops,
		void *	user_data
	)

#include <include/zephyr/usb/class/usbd_uac2.h>

Register USB Audio 2 application callbacks.

Parameters

dev	USB Audio 2 device instance
ops	USB Audio 2 callback structure
user_data	Opaque user data to pass to ops callbacks