Common Bluetooth A2DP functions. More...

#include <BluetoothA2DPCommon.h>

Inheritance diagram for BluetoothA2DPCommon:

Public Member Functions
virtual	~BluetoothA2DPCommon ()=default
	Destructor.

virtual void	clean_last_connection ()
	clean last connection (delete)

virtual bool	connect_to (esp_bd_addr_t peer)
	Connnects to the indicated address.

virtual void	debounce (void(*cb)(void), int ms)
	Prevents that the same method is executed multiple times within the indicated time limit.

void	delay_ms (uint32_t millis)
	calls vTaskDelay to pause for the indicated number of milliseconds

virtual void	disconnect ()
	Closes the connection.

virtual void	end (bool releaseMemory=false)
	Closes the connection and stops A2DP.

virtual esp_a2d_audio_state_t	get_audio_state ()
	Determine the actual audio state.

virtual esp_a2d_connection_state_t	get_connection_state ()
	Determine the connection state.

virtual esp_bd_addr_t *	get_last_peer_address ()
	Provides the address of the last device.

unsigned long	get_millis ()
	Provides the time in milliseconds since the last system boot.

virtual const char *	get_name ()
	Provides the actual SSID name.

virtual int	get_volume ()
	Determines the actual volume.

virtual bool	is_connected ()
	Checks if A2DP is connected.

void	log_free_heap ()
	Logs the free heap.

virtual bool	reconnect ()
	Reconnects to the last device.

void	set_auto_reconnect (bool active)
	activate / deactivate the automatic reconnection to the last address (per default this is on)

void	set_bluedroid_config_t (esp_bluedroid_config_t cfg)
	Defines the esp_bluedroid_config_t: Available from IDF 5.2.1.

virtual void	set_connectable (bool connectable)
	Bluetooth connectable.

virtual void	set_connected (bool active)
	Calls disconnect or reconnect.

virtual void	set_default_bt_mode (esp_bt_mode_t mode)
	Defines the default bt mode. The default is ESP_BT_MODE_CLASSIC_BT: use this e.g. to set to ESP_BT_MODE_BTDM.

virtual void	set_discoverability (esp_bt_discovery_mode_t d)
	Bluetooth discoverability. More...

void	set_event_queue_size (int size)
	Defines the queue size of the event task.

void	set_event_stack_size (int size)
	Defines the stack size of the event task (in bytes)

virtual void	set_on_audio_state_changed (void(callBack)(esp_a2d_audio_state_t state, void ), void *obj=nullptr)
	Set the callback that is called when the audio state is changed. More...

virtual void	set_on_audio_state_changed_post (void(callBack)(esp_a2d_audio_state_t state, void ), void *obj=nullptr)

virtual void	set_on_connection_state_changed (void(callBack)(esp_a2d_connection_state_t state, void ), void *obj=nullptr)
	Set the callback that is called when the connection state is changed. More...

void	set_task_core (BaseType_t core)
	Defines the core which is used to start the tasks (to process the events and audio queue)

void	set_task_priority (UBaseType_t priority)
	defines the task priority (the default value is configMAX_PRIORITIES - 10)

virtual void	set_volume (uint8_t volume)
	Sets the volume (range 0 - 127)

virtual void	set_volume_control (A2DPVolumeControl *ptr)
	you can define a custom VolumeControl implementation

const char *	to_str (esp_a2d_audio_state_t state)
	converts a esp_a2d_audio_state_t to a string

const char *	to_str (esp_a2d_connection_state_t state)
	converts esp_a2d_connection_state_t to a string

const char *	to_str (esp_avrc_playback_stat_t state)
	converts esp_avrc_playback_stat_t to a string More...

const char *	to_str (esp_bd_addr_t bda)
	converts a esp_bd_addr_t to a string - the string is 18 characters long!

Protected Member Functions
virtual esp_err_t	bluedroid_init ()

virtual bool	bt_start ()
	Startup logic as implemented by Arduino. More...

virtual esp_err_t	esp_a2d_connect (esp_bd_addr_t peer)=0

virtual void	get_last_connection ()

virtual bool	has_last_connection ()

virtual const char *	last_bda_nvs_name ()=0

virtual void	set_last_connection (esp_bd_addr_t bda)

virtual void	set_scan_mode_connectable (bool connectable)
	Defines if the bluetooth is connectable.

virtual void	set_scan_mode_connectable_default ()=0

virtual A2DPVolumeControl *	volume_control ()
	provides access to the VolumeControl object

Protected Attributes
esp_a2d_audio_state_t	audio_state = ESP_A2D_AUDIO_STATE_STOPPED

void(*	audio_state_callback )(esp_a2d_audio_state_t state, void *obj) = nullptr

void(*	audio_state_callback_post )(esp_a2d_audio_state_t state, void *obj) = nullptr

void *	audio_state_obj = nullptr

void *	audio_state_obj_post = nullptr

esp_bluedroid_config_t	bluedroid_config

esp_bt_mode_t	bt_mode = ESP_BT_MODE_CLASSIC_BT

const char *	bt_name = {0}

esp_a2d_connection_state_t	connection_state = ESP_A2D_CONNECTION_STATE_DISCONNECTED

void(*	connection_state_callback )(esp_a2d_connection_state_t state, void *obj) = nullptr

void *	connection_state_obj = nullptr

uint32_t	debounce_ms = 0

unsigned int	default_reconnect_timout =10000

A2DPDefaultVolumeControl	default_volume_control

esp_bt_discovery_mode_t	discoverability = ESP_BT_GENERAL_DISCOVERABLE

int	event_queue_size = 20

int	event_stack_size = 3072

bool	is_autoreconnect_allowed = false

bool	is_start_disabled = false

bool	is_volume_used = false

esp_bd_addr_t	last_connection = {0,0,0,0,0,0}

const char *	m_a2d_audio_state_str [3] = {"Suspended", "Stopped", "Started"}

const char *	m_a2d_conn_state_str [4] = {"Disconnected", "Connecting", "Connected", "Disconnecting"}

const char *	m_avrc_playback_state_str [5] = {"stopped", "playing", "paused", "forward seek", "reverse seek"}

esp_bd_addr_t	peer_bd_addr

ReconnectStatus	reconnect_status = NoReconnect

unsigned long	reconnect_timout =0

BaseType_t	task_core = 1

UBaseType_t	task_priority = configMAX_PRIORITIES - 10

A2DPVolumeControl *	volume_control_ptr = nullptr

uint8_t	volume_value = 0

Detailed Description

Common Bluetooth A2DP functions.

Author: Phil Schatzmann

Copyright: Apache License Version 2

Member Function Documentation

◆ bt_start()

bool BluetoothA2DPCommon::bt_start ( )

protectedvirtual

Startup logic as implemented by Arduino.

Returns: true; false

◆ set_discoverability()

void BluetoothA2DPCommon::set_discoverability ( esp_bt_discovery_mode_t d )

virtual

Bluetooth discoverability.

Defines if the bluetooth is discoverable.

◆ set_on_audio_state_changed()

void BluetoothA2DPCommon::set_on_audio_state_changed	(	void()(esp_a2d_audio_state_t state, void )	callBack,
		void *	obj = `nullptr`
	)

virtual

Set the callback that is called when the audio state is changed.

Set the callback that is called when the audio state is changed This callback is called before the I2S bus is changed.

◆ set_on_audio_state_changed_post()

void BluetoothA2DPCommon::set_on_audio_state_changed_post	(	void()(esp_a2d_audio_state_t state, void )	callBack,
		void *	obj = `nullptr`
	)

virtual

Set the callback that is called after the audio state has changed. This callback is called after the I2S bus has changed.

◆ set_on_connection_state_changed()

void BluetoothA2DPCommon::set_on_connection_state_changed	(	void()(esp_a2d_connection_state_t state, void )	callBack,
		void *	obj = `nullptr`
	)

virtual

Set the callback that is called when the connection state is changed.

Set the callback that is called when the connection state is changed This callback is called before the I2S bus is changed.

◆ to_str()

const char * BluetoothA2DPCommon::to_str ( esp_avrc_playback_stat_t state )

converts esp_avrc_playback_stat_t to a string

converts a esp_a2d_audio_state_t to a string

Member Data Documentation

◆ bluedroid_config

esp_bluedroid_config_t BluetoothA2DPCommon::bluedroid_config

protected

Initial value:

{
            .ssp_en = true
        }

The documentation for this class was generated from the following files:

src/BluetoothA2DPCommon.h
src/BluetoothA2DPCommon.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ bt_start()

◆ set_discoverability()

◆ set_on_audio_state_changed()

◆ set_on_audio_state_changed_post()

◆ set_on_connection_state_changed()

◆ to_str()

Member Data Documentation

◆ bluedroid_config