bt_vcp_vol_rend_cb Struct Reference

Struct to hold the Volume Renderer callbacks. More...

#include <vcp.h>

Data Fields
void(*	state )(struct bt_conn *conn, int err, uint8_t volume, uint8_t mute)
	Callback function for Volume Control Service volume state.
void(*	flags )(struct bt_conn *conn, int err, uint8_t flags)
	Callback function for Volume Control Service flags.

Detailed Description

Struct to hold the Volume Renderer callbacks.

These can be registered for usage with bt_vcp_vol_rend_register().

Field Documentation

flags

void(* bt_vcp_vol_rend_cb::flags) (struct bt_conn *conn, int err, uint8_t flags)

Callback function for Volume Control Service flags.

Called when the value is locally read as the server. Called when the value is remotely read as the client. Called if the value is changed by either the server or client.

Parameters

conn	Pointer to the connection to a remote device if the change was caused by it, otherwise NULL.
err	Error value. 0 on success, GATT error on positive value or errno on negative value.
flags	The flags of the Volume Control Service server.

state

void(* bt_vcp_vol_rend_cb::state) (struct bt_conn *conn, int err, uint8_t volume, uint8_t mute)

Callback function for Volume Control Service volume state.

Called when the value is locally read with bt_vcp_vol_rend_get_state(), or if the state is changed by either the Volume Renderer or a remote Volume Controller.

Parameters

conn	Pointer to the connection to a remote device if the change was caused by it, otherwise NULL.
err	Error value. 0 on success, GATT error on positive value or errno on negative value.
volume	The volume of the Volume Control Service server.
mute	The mute setting of the Volume Control Service server.

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The documentation for this struct was generated from the following file:

• zephyr/bluetooth/audio/vcp.h