Base class for operations that do not require an extra parameter to compute the combination. More...

#include <combination.h>

Inheritance diagram for esphome::combination::CombinationNoParameterComponent:

Public Member Functions
void	setup () override
	Adds a callback to each source sensor.

void	add_source (Sensor *sensor)

virtual void	handle_new_value (float value)=0
	Computes the combination.

void	log_source_sensors () override
	Logs all source sensor's names in sensors_.

Public Member Functions inherited from esphome::combination::CombinationComponent
Public Member Functions inherited from esphome::Component
virtual void	loop ()
	This method will be called repeatedly.

virtual void	dump_config ()

virtual float	get_setup_priority () const
	priority of setup().

float	get_actual_setup_priority () const

void	set_setup_priority (float priority)

void	call ()

virtual void	on_shutdown ()

virtual void	on_safe_shutdown ()

virtual bool	teardown ()
	Called during teardown to allow component to gracefully finish operations.

virtual void	on_powerdown ()
	Called after teardown is complete to power down hardware.

uint8_t	get_component_state () const

void	reset_to_construction_state ()
	Reset this component back to the construction state to allow setup to run again.

bool	is_in_loop_state () const
	Check if this component has completed setup and is in the loop state.

bool	is_idle () const
	Check if this component is idle.

void	mark_failed ()
	Mark this component as failed.

void	mark_failed (const LogString *message)

void	disable_loop ()
	Disable this component's loop.

void	enable_loop ()
	Enable this component's loop.

void	enable_loop_soon_any_context ()
	Thread and ISR-safe version of enable_loop() that can be called from any context.

bool	is_failed () const

bool	is_ready () const

virtual bool	can_proceed ()

bool	status_has_warning () const

bool	status_has_error () const

void	status_set_warning ()

void	status_set_warning (const char *message)

void	status_set_warning (const LogString *message)

bool	status_comm_result (bool ok)
	Clears the warning when `ok`, else sets it with `message` (default "Communication failed"); returns `ok`.

bool	status_comm_result (bool ok, const LogString *message)

void	status_set_error ()

void	status_set_error (const LogString *message)

void	status_clear_warning ()

void	status_clear_error ()

	ESPDEPRECATED ("Use status_momentary_warning() without a name. Removed in 2027.5.0", "2026.11.0") void status_momentary_warning(const char *name

void	status_momentary_warning (uint32_t length=5000)
	Set warning status flag and clear it after `length` ms.

void	status_momentary_warning (const LogString *message, uint32_t length=5000)

	ESPDEPRECATED ("Use status_momentary_error() without a name. Removed in 2027.5.0", "2026.11.0") void status_momentary_error(const char *name

void	status_momentary_error (uint32_t length=5000)
	Set error status flag and clear it after `length` ms.

void	status_momentary_error (const LogString *message, uint32_t length=5000)

bool	has_overridden_loop () const

const LogString *	get_component_log_str () const ESPHOME_ALWAYS_INLINE
	Get the integration where this component was declared as a LogString for logging.

bool	should_warn_of_blocking (uint32_t blocking_time, uint32_t &threshold_ms_out)

Public Member Functions inherited from esphome::sensor::Sensor
	Sensor ()

int8_t	get_accuracy_decimals ()
	Get the accuracy in decimals, using the manual override if set.

void	set_accuracy_decimals (int8_t accuracy_decimals)
	Manually set the accuracy in decimals.

bool	has_accuracy_decimals () const
	Check if the accuracy in decimals has been manually set.

StateClass	get_state_class ()
	Get the state class, using the manual override if set.

void	set_state_class (StateClass state_class)
	Manually set the state class.

bool	get_force_update () const
	Get whether force update mode is enabled.

void	set_force_update (bool force_update)
	Set force update mode.

void	add_filter (Filter *filter)
	Add a filter to the filter chain. Will be appended to the back.

void	add_filters (std::initializer_list< Filter * > filters)
	Add a list of vectors to the back of the filter chain.

void	set_filters (std::initializer_list< Filter * > filters)
	Clear the filters and replace them by filters.

void	clear_filters ()
	Clear the entire filter chain.

float	get_state () const
	Getter-syntax for .state.

float	get_raw_state () const
	Get the last state received by publish_state(), before any filters were applied.

void	publish_state (float state)
	Publish a new state to the front-end.

template<typename F >
void	add_on_state_callback (F &&callback)
	Add a callback that will be called every time a filtered value arrives.

template<typename F >
void	add_on_raw_state_callback (F &&callback)
	Add a callback that will be called every time the sensor sends a raw value.

void	internal_send_state_to_frontend (float state)

Public Member Functions inherited from esphome::EntityBase
	ESPDEPRECATED ("Use get_name_to() or get_log_name() instead. Will be removed in ESPHome 2027.5.0", "2026.11.0") const StringRef &get_name() const
	The name is in flash here; the first call makes a RAM copy that is kept for the life of the device.

StringRef	get_name_to (std::span< char, ENTITY_NAME_BUF_SIZE > buffer) const
	Get the name of this Entity, copied out of flash into buffer.

	ESPDEPRECATED ("Use get_name_to() or get_log_name() instead. Will be removed in ESPHome 2027.5.0", "2026.11.0") const StringRef &get_name() const

const StringRef &	get_name_to (std::span< char, ENTITY_NAME_BUF_SIZE >) const

bool	name_equals (const StringRef &other) const

const ProgmemStringRef &	get_name_progmem () const
	The name as stored, for consumers that read flash themselves (e.g. API progmem fields).

size_t	write_name_to (char *buf, size_t buf_size) const
	Copy the name into buf (null terminated), returns its length.

const LogString *	get_log_name () const
	Get the name for a "%s" log argument (LOG_STR_ARG).

bool	has_own_name () const

uint32_t	get_object_id_hash () const

StringRef	get_object_id_to (std::span< char, OBJECT_ID_MAX_LEN > buf) const
	Get object_id with zero heap allocation For static case: returns StringRef to internal storage (buffer unused) For dynamic case: formats into buffer and returns StringRef to buffer.

size_t	write_object_id_to (char *buf, size_t buf_size) const
	Write object_id directly to buffer, returns length written (excluding null) Useful for building compound strings without intermediate buffer.

bool	is_internal () const

void	set_internal (bool internal)

bool	is_disabled_by_default () const

EntityCategory	get_entity_category () const

const char *	get_device_class_to (std::span< char, MAX_DEVICE_CLASS_LENGTH > buffer) const

ProgmemStringRef	get_device_class_progmem () const
	The device class as stored (in flash on ESP8266), for consumers that read flash themselves.

StringRef	get_unit_of_measurement_ref () const

const char *	get_icon_to (std::span< char, MAX_ICON_LENGTH > buffer) const

ProgmemStringRef	get_icon_progmem () const
	The icon as stored (in flash on ESP8266), for consumers that read flash themselves.

uint32_t	get_device_id () const

Device *	get_device () const

bool	has_state () const

void	set_has_state (bool state)

	ESPDEPRECATED ("Use make_entity_preference<T>() instead, or preferences won't be migrated. " "See https://github.com/esphome/backlog/issues/85. Will be removed in 2027.1.0.", "2026.7.0") uint32_t get_preference_hash()
	Get a unique hash for storing preferences/settings for this entity.

template<typename T >
ESPPreferenceObject	make_entity_preference (uint32_t version=0)
	Create a preference object for storing this entity's state/settings.

template<typename T >
ESPPreferenceObject	make_entity_preference (uint32_t version, bool in_flash)
	As make_entity_preference(), stored in flash or RTC memory where the backend supports the choice.

Protected Attributes
std::vector< Sensor * >	sensors_

Protected Attributes inherited from esphome::Component
uint8_t	component_source_index_ {0}
	Index into component source PROGMEM lookup table (0 = not set)

uint8_t	warn_if_blocking_over_ {WARN_IF_BLOCKING_OVER_CS}
	Warn threshold in centiseconds (max 2550ms)

uint8_t	component_state_ {0x00}
	State of this component - each bit has a purpose: Bits 0-2: Component state (0x00=CONSTRUCTION, 0x01=SETUP, 0x02=LOOP, 0x03=FAILED, 0x04=LOOP_DONE) Bit 3: STATUS_LED_WARNING Bit 4: STATUS_LED_ERROR Bit 5: Has overridden loop() (set at registration time) Bits 6-7: Unused - reserved for future expansion.

volatile bool	pending_enable_loop_ {false}
	ISR-safe flag for enable_loop_soon_any_context.

ComponentRuntimeStats	runtime_stats_

Protected Attributes inherited from esphome::sensor::Sensor
float	raw_state_ {NAN}
	The last state passed to publish_state(), before filters.

LazyCallbackManager< void(float)>	raw_callback_
	Storage for raw state callbacks.

LazyCallbackManager< void(float)>	callback_
	Storage for filtered state callbacks.

Filter *	filter_list_ {nullptr}
	Store all active filters.

int8_t	accuracy_decimals_ {-1}
	Accuracy in decimals (-1 = not set)

StateClass	state_class_ {STATE_CLASS_NONE}
	State class (STATE_CLASS_NONE = not set)

struct esphome::sensor::Sensor::SensorFlags	sensor_flags_

Protected Attributes inherited from esphome::EntityBase
ProgmemStringRef	name_

uint32_t	object_id_hash_ {}

Device *	device_ {}

struct esphome::EntityBase::EntityFlags	flags_

uint8_t	device_class_idx_ {}

uint8_t	uom_idx_ {}

uint8_t	icon_idx_ {}

Additional Inherited Members
Data Fields inherited from esphome::Component
uint32_t	length = 5000)

Data Fields inherited from esphome::sensor::Sensor
float	state
	This member variable stores the last state that has passed through all filters.

Protected Member Functions inherited from esphome::combination::CombinationComponent
void	log_config_ (const LogString *combo_type)
	Logs the sensor for use in dump_config.

Protected Member Functions inherited from esphome::Component
friend	void::setup ()

friend	void::original_setup ()

void	set_component_source_ (uint8_t index)
	Set where this component was loaded from for some debug messages.

virtual void	call_setup ()

void	call_dump_config_ ()

void	enable_loop_slow_path_ ()

void	set_component_state_ (uint8_t state)
	Helper to set component state (clears state bits and sets new state)

bool	set_status_flag_ (uint8_t flag)
	Helper to set a status LED flag on both this component and the app.

bool	set_error_flag_ (const LogString *message)
	Set the error flag and log it; true when it was not set before.

void	set_interval (const char *name, uint32_t interval, std::function< void()> &&f)
	Set an interval function with a const char* name.

void	set_interval (uint32_t id, uint32_t interval, std::function< void()> &&f)
	Set an interval function with a numeric ID (zero heap allocation).

void	set_interval (InternalSchedulerID id, uint32_t interval, std::function< void()> &&f)

void	set_interval (uint32_t interval, std::function< void()> &&f)

bool	cancel_interval (const char *name)
	Cancel an interval function.

bool	cancel_interval (uint32_t id)

bool	cancel_interval (InternalSchedulerID id)

void	set_timeout (const char *name, uint32_t timeout, std::function< void()> &&f)
	Set a timeout function with a const char* name.

void	set_timeout (uint32_t id, uint32_t timeout, std::function< void()> &&f)
	Set a timeout function with a numeric ID (zero heap allocation).

void	set_timeout (InternalSchedulerID id, uint32_t timeout, std::function< void()> &&f)

void	set_timeout (uint32_t timeout, std::function< void()> &&f)

bool	cancel_timeout (const char *name)
	Cancel a timeout function.

bool	cancel_timeout (uint32_t id)

bool	cancel_timeout (InternalSchedulerID id)

void	defer (const char *name, std::function< void()> &&f)
	Defer a callback to the next loop() call with a const char* name.

void	defer (std::function< void()> &&f)
	Defer a callback to the next loop() call.

void	defer (uint32_t id, std::function< void()> &&f)
	Defer a callback with a numeric ID (zero heap allocation)

bool	cancel_defer (const char *name)
	Cancel a defer callback using the specified name, name must not be empty.

bool	cancel_defer (uint32_t id)

void	status_clear_warning_slow_path_ ()

void	status_clear_error_slow_path_ ()

Protected Member Functions inherited from esphome::EntityBase
friend	void::setup ()

friend	void::original_setup ()

void	configure_entity_ (const char *name, uint32_t object_id_hash, uint32_t entity_fields)
	Combined entity setup from codegen: set name, object_id hash, entity string indices, and flags.

void	set_device_ (Device *device)

ESPPreferenceObject	make_entity_preference_ (size_t size, uint32_t version)
	Non-template helpers for make_entity_preference() to avoid code bloat.

ESPPreferenceObject	make_entity_preference_ (size_t size, uint32_t version, bool in_flash)

uint32_t	entity_preference_key_ (uint32_t version)
	Key for both helpers; preference hash migration goes here.

Detailed Description

Base class for operations that do not require an extra parameter to compute the combination.

Definition at line 23 of file combination.h.

Member Function Documentation

◆ add_source()

void esphome::combination::CombinationNoParameterComponent::add_source ( Sensor * sensor )

Definition at line 20 of file combination.cpp.

◆ handle_new_value()

virtual void esphome::combination::CombinationNoParameterComponent::handle_new_value ( float value )

pure virtual

Computes the combination.

Parameters

value Newest sensor measurement

Implemented in esphome::combination::MaximumCombinationComponent, esphome::combination::MeanCombinationComponent, esphome::combination::MedianCombinationComponent, esphome::combination::MinimumCombinationComponent, esphome::combination::MostRecentCombinationComponent, esphome::combination::RangeCombinationComponent, and esphome::combination::SumCombinationComponent.

◆ log_source_sensors()

void esphome::combination::CombinationNoParameterComponent::log_source_sensors ( )

overridevirtual

Logs all source sensor's names in sensors_.

Implements esphome::combination::CombinationComponent.

Definition at line 30 of file combination.cpp.

◆ setup()

void esphome::combination::CombinationNoParameterComponent::setup ( )

overridevirtual

Adds a callback to each source sensor.

Reimplemented from esphome::Component.

Definition at line 44 of file combination.cpp.

Field Documentation

◆ sensors_

std::vector<Sensor *> esphome::combination::CombinationNoParameterComponent::sensors_

protected

Definition at line 38 of file combination.h.

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

esphome/components/combination/combination.h
esphome/components/combination/combination.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members