Bluetooth Content Control Identifier

Bluetooth Content Control Identifier (CCID) . More...

Macros
#define	BT_CCID_MIN   0
	Minimum CCID value.
#define	BT_CCID_MAX   255
	Maximum CCID value.

Functions
int	bt_ccid_alloc_value (void)
	Allocates a CCID value.
const struct bt_gatt_attr *	bt_ccid_find_attr (uint8_t ccid)
	Get the GATT attribute of a CCID value.

Detailed Description

Bluetooth Content Control Identifier (CCID) .

Since

3.7

Version

0.8.0

The Content Control Identifier (CCID) API manages CCIDs for BT_UUID_CCID characteristics.

Macro Definition Documentation

BT_CCID_MAX

#define BT_CCID_MAX   255

#include <zephyr/bluetooth/audio/ccid.h>

Maximum CCID value.

BT_CCID_MIN

#define BT_CCID_MIN   0

#include <zephyr/bluetooth/audio/ccid.h>

Minimum CCID value.

Function Documentation

bt_ccid_alloc_value()

int bt_ccid_alloc_value

(

void

)

#include <zephyr/bluetooth/audio/ccid.h>

Allocates a CCID value.

This should always be called right before registering a GATT service that contains a BT_UUID_CCID characteristic. Allocating a CCID without registering the characteristic may (in very rare cases) result in duplicated CCIDs on the device.

Requires that

CONFIG_BT_CONN 

is enabled.

Return values

ccid	8-bit unsigned CCID value on success
-ENOMEM	No more CCIDs can be allocated

bt_ccid_find_attr()

const struct bt_gatt_attr * bt_ccid_find_attr

(

uint8_t

ccid

)

#include <zephyr/bluetooth/audio/ccid.h>

Get the GATT attribute of a CCID value.

Searches the current GATT database for a CCID characteristic that has the supplied CCID value.

Requires that

CONFIG_BT_CONN 

is enabled.

Parameters

ccid	The CCID to search for

Return values

NULL	None was found
attr	Pointer to a GATT attribute