Microphone Control Profile (MICP) More...

Data Structures
struct	bt_micp_mic_dev_register_param
	Register parameters structure for Microphone Control Service. More...

struct	bt_micp_included
	Microphone Control Profile included services. More...

struct	bt_micp_mic_dev_cb
	Struct to hold the Microphone Device callbacks. More...

struct	bt_micp_mic_ctlr_cb
	Struct to hold the Microphone Controller callbacks. More...

Macros
#define	BT_MICP_MIC_DEV_AICS_CNT 0
	Defines the maximum number of Microphone Control Service instances for the Microphone Control Profile Microphone Device.

Functions
int	bt_micp_mic_dev_register (struct bt_micp_mic_dev_register_param *param)
	Initialize the Microphone Control Profile Microphone Device.

int	bt_micp_mic_dev_included_get (struct bt_micp_included *included)
	Get Microphone Device included services.

int	bt_micp_mic_dev_unmute (void)
	Unmute the Microphone Device.

int	bt_micp_mic_dev_mute (void)
	Mute the Microphone Device.

int	bt_micp_mic_dev_mute_disable (void)
	Disable the mute functionality on the Microphone Device.

int	bt_micp_mic_dev_mute_get (void)
	Read the mute state on the Microphone Device.

int	bt_micp_mic_ctlr_included_get (struct bt_micp_mic_ctlr mic_ctlr, struct bt_micp_included included)
	Get Microphone Control Profile included services.

int	bt_micp_mic_ctlr_conn_get (const struct bt_micp_mic_ctlr mic_ctlr, struct bt_conn *conn)
	Get the connection pointer of a Microphone Controller instance.

struct bt_micp_mic_ctlr *	bt_micp_mic_ctlr_get_by_conn (const struct bt_conn *conn)
	Get the volume controller from a connection pointer.

int	bt_micp_mic_ctlr_discover (struct bt_conn conn, struct bt_micp_mic_ctlr *mic_ctlr)
	Discover Microphone Control Service.

int	bt_micp_mic_ctlr_unmute (struct bt_micp_mic_ctlr *mic_ctlr)
	Unmute a remote Microphone Device.

int	bt_micp_mic_ctlr_mute (struct bt_micp_mic_ctlr *mic_ctlr)
	Mute a remote Microphone Device.

int	bt_micp_mic_ctlr_mute_get (struct bt_micp_mic_ctlr *mic_ctlr)
	Read the mute state of a remote Microphone Device.

int	bt_micp_mic_ctlr_cb_register (struct bt_micp_mic_ctlr_cb *cb)
	Registers the callbacks used by Microphone Controller.

Application error codes
#define	BT_MICP_ERR_MUTE_DISABLED 0x80
	Mute/unmute commands are disabled.

Microphone Control Profile mute states
#define	BT_MICP_MUTE_UNMUTED 0x00
	The microphone state is unmuted.

#define	BT_MICP_MUTE_MUTED 0x01
	The microphone state is muted.

#define	BT_MICP_MUTE_DISABLED 0x02
	The microphone state is disabled and cannot be muted or unmuted.

Detailed Description

Microphone Control Profile (MICP)

Since: 2.7

Version: 0.8.0

Macro Definition Documentation

◆ BT_MICP_ERR_MUTE_DISABLED

#define BT_MICP_ERR_MUTE_DISABLED 0x80

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

Mute/unmute commands are disabled.

◆ BT_MICP_MIC_DEV_AICS_CNT

#define BT_MICP_MIC_DEV_AICS_CNT 0

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

Defines the maximum number of Microphone Control Service instances for the Microphone Control Profile Microphone Device.

◆ BT_MICP_MUTE_DISABLED

#define BT_MICP_MUTE_DISABLED 0x02

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

The microphone state is disabled and cannot be muted or unmuted.

◆ BT_MICP_MUTE_MUTED

#define BT_MICP_MUTE_MUTED 0x01

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

The microphone state is muted.

◆ BT_MICP_MUTE_UNMUTED

#define BT_MICP_MUTE_UNMUTED 0x00

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

The microphone state is unmuted.

Function Documentation

◆ bt_micp_mic_ctlr_cb_register()

int bt_micp_mic_ctlr_cb_register ( struct bt_micp_mic_ctlr_cb * cb )

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

Registers the callbacks used by Microphone Controller.

This can only be done as the client.

Parameters

cb	The callback structure.

Returns: 0 if success, errno on failure.

◆ bt_micp_mic_ctlr_conn_get()

int bt_micp_mic_ctlr_conn_get	(	const struct bt_micp_mic_ctlr *	mic_ctlr,
		struct bt_conn **	conn
	)

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

Get the connection pointer of a Microphone Controller instance.

Get the Bluetooth connection pointer of a Microphone Controller instance.

Parameters

mic_ctlr	Microphone Controller instance pointer.
conn	Connection pointer.

Returns: 0 if success, errno on failure.

◆ bt_micp_mic_ctlr_discover()

int bt_micp_mic_ctlr_discover	(	struct bt_conn *	conn,
		struct bt_micp_mic_ctlr **	mic_ctlr
	)

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

Discover Microphone Control Service.

This will start a GATT discovery and setup handles and subscriptions. This shall be called once before any other actions can be executed for the peer device, and the bt_micp_mic_ctlr_cb::discover callback will notify when it is possible to start remote operations.

Parameters

conn The connection to initialize the profile for.

[out] mic_ctlr Valid remote instance object on success.

Returns
0 on success, GATT error value on fail.

◆ bt_micp_mic_ctlr_get_by_conn()

struct bt_micp_mic_ctlr * bt_micp_mic_ctlr_get_by_conn ( const struct bt_conn * conn )

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

Get the volume controller from a connection pointer.

Get the Volume Control Profile Volume Controller pointer from a connection pointer. Only volume controllers that have been initiated via bt_micp_mic_ctlr_discover() can be retrieved.

Parameters

conn	Connection pointer.

Return values

Pointer	to a Microphone Control Profile Microphone Controller instance
NULL	if `conn` is NULL or if the connection has not done discovery yet

◆ bt_micp_mic_ctlr_included_get()

int bt_micp_mic_ctlr_included_get	(	struct bt_micp_mic_ctlr *	mic_ctlr,
		struct bt_micp_included *	included
	)

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

Get Microphone Control Profile included services.

Returns a pointer to a struct that contains information about the Microphone Control Profile included services instances, such as pointers to the Audio Input Control Service instances.

Requires that CONFIG_BT_MICP_MIC_CTLR_AICS is enabled.

Parameters

	mic_ctlr	Microphone Controller instance pointer.
[out]	included	Pointer to store the result in.

Returns: 0 if success, errno on failure.

◆ bt_micp_mic_ctlr_mute()

int bt_micp_mic_ctlr_mute ( struct bt_micp_mic_ctlr * mic_ctlr )

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

Mute a remote Microphone Device.

Parameters

mic_ctlr Microphone Controller instance pointer.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_ctlr_mute_get()

int bt_micp_mic_ctlr_mute_get ( struct bt_micp_mic_ctlr * mic_ctlr )

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

Read the mute state of a remote Microphone Device.

Parameters

mic_ctlr Microphone Controller instance pointer.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_ctlr_unmute()

int bt_micp_mic_ctlr_unmute ( struct bt_micp_mic_ctlr * mic_ctlr )

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

Unmute a remote Microphone Device.

Parameters

mic_ctlr Microphone Controller instance pointer.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_dev_included_get()

int bt_micp_mic_dev_included_get ( struct bt_micp_included * included )

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

Get Microphone Device included services.

Returns a pointer to a struct that contains information about the Microphone Device included Audio Input Control Service instances.

Requires that CONFIG_BT_MICP_MIC_DEV_AICS is enabled.

Parameters

included Pointer to store the result in.

Returns: 0 if success, errno on failure.

◆ bt_micp_mic_dev_mute()

int bt_micp_mic_dev_mute ( void )

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

Mute the Microphone Device.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_dev_mute_disable()

int bt_micp_mic_dev_mute_disable ( void )

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

Disable the mute functionality on the Microphone Device.

Can be reenabled by called bt_micp_mic_dev_mute or bt_micp_mic_dev_unmute.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_dev_mute_get()

int bt_micp_mic_dev_mute_get ( void )

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

Read the mute state on the Microphone Device.

Returns: 0 on success, GATT error value on fail.

◆ bt_micp_mic_dev_register()

int bt_micp_mic_dev_register ( struct bt_micp_mic_dev_register_param * param )

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

Initialize the Microphone Control Profile Microphone Device.

This will enable the Microphone Control Service instance and make it discoverable by Microphone Controllers.

Parameters

param Pointer to an initialization structure.

Returns: 0 if success, errno on failure.

◆ bt_micp_mic_dev_unmute()

int bt_micp_mic_dev_unmute ( void )

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

Unmute the Microphone Device.

Returns: 0 on success, GATT error value on fail.

	conn	The connection to initialize the profile for.
[out]	mic_ctlr	Valid remote instance object on success.

Data Structures

Macros

Functions

Application error codes

Microphone Control Profile mute states

Detailed Description

Macro Definition Documentation

◆ BT_MICP_ERR_MUTE_DISABLED

◆ BT_MICP_MIC_DEV_AICS_CNT

◆ BT_MICP_MUTE_DISABLED

◆ BT_MICP_MUTE_MUTED

◆ BT_MICP_MUTE_UNMUTED

Function Documentation

◆ bt_micp_mic_ctlr_cb_register()

◆ bt_micp_mic_ctlr_conn_get()

◆ bt_micp_mic_ctlr_discover()

◆ bt_micp_mic_ctlr_get_by_conn()

◆ bt_micp_mic_ctlr_included_get()

◆ bt_micp_mic_ctlr_mute()

◆ bt_micp_mic_ctlr_mute_get()

◆ bt_micp_mic_ctlr_unmute()

◆ bt_micp_mic_dev_included_get()

◆ bt_micp_mic_dev_mute()

◆ bt_micp_mic_dev_mute_disable()

◆ bt_micp_mic_dev_mute_get()

◆ bt_micp_mic_dev_register()

◆ bt_micp_mic_dev_unmute()