ESPHome 2026.1.0-dev
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esphome::uart::UARTEvent Class Reference

#include <uart_event.h>

Inheritance diagram for esphome::uart::UARTEvent:
esphome::event::Event esphome::uart::UARTDevice esphome::Component esphome::EntityBase esphome::EntityBase_DeviceClass

Data Structures

struct  EventMatcher
 

Public Member Functions

void setup () override
 
void loop () override
 
void dump_config () override
 
void add_event_matcher (const char *event_name, const uint8_t *match_data, size_t match_data_len)
 
- Public Member Functions inherited from esphome::event::Event
void trigger (const std::string &event_type)
 
void set_event_types (std::initializer_list< const char * > event_types)
 Set the event types supported by this event (from initializer list).
 
void set_event_types (const FixedVector< const char * > &event_types)
 Set the event types supported by this event (from FixedVector).
 
void set_event_types (const std::vector< const char * > &event_types)
 Set the event types supported by this event (from vector).
 
void set_event_types (std::initializer_list< std::string > event_types)=delete
 
void set_event_types (const FixedVector< std::string > &event_types)=delete
 
void set_event_types (const std::vector< std::string > &event_types)=delete
 
const FixedVector< const char * > & get_event_types () const
 Return the event types supported by this event.
 
const char * get_last_event_type () const
 Return the last triggered event type (pointer to string in types_), or nullptr if no event triggered yet.
 
void add_on_event_callback (std::function< void(const std::string &event_type)> &&callback)
 
- Public Member Functions inherited from esphome::EntityBase
const StringRefget_name () const
 
void set_name (const char *name)
 
bool has_own_name () const
 
std::string get_object_id () const
 
void set_object_id (const char *object_id)
 
void set_name_and_object_id (const char *name, const char *object_id)
 
uint32_t get_object_id_hash ()
 
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
 
void set_disabled_by_default (bool disabled_by_default)
 
EntityCategory get_entity_category () const
 
void set_entity_category (EntityCategory entity_category)
 
ESPDEPRECATED("Use get_icon_ref() instead for better performance (avoids string copy). Will be removed in ESPHome 2026.5.0", "2025.11.0") std void set_icon (const char *icon)
 
StringRef get_icon_ref () const
 
uint32_t get_device_id () const
 
void set_device (Device *device)
 
bool has_state () const
 
void set_has_state (bool state)
 
uint32_t get_preference_hash ()
 Get a unique hash for storing preferences/settings for this entity.
 
- Public Member Functions inherited from esphome::EntityBase_DeviceClass
ESPDEPRECATED("Use get_device_class_ref() instead for better performance (avoids string copy). Will be removed in " "ESPHome 2026.5.0", "2025.11.0") std void set_device_class (const char *device_class)
 Get the device class, using the manual override if set.
 
StringRef get_device_class_ref () const
 Get the device class as StringRef.
 
- Public Member Functions inherited from esphome::uart::UARTDevice
 UARTDevice ()=default
 
 UARTDevice (UARTComponent *parent)
 
void set_uart_parent (UARTComponent *parent)
 
void write_byte (uint8_t data)
 
void set_rx_full_threshold (size_t rx_full_threshold)
 
void set_rx_full_threshold_ms (size_t time)
 
size_t get_rx_full_threshold ()
 
void set_rx_timeout (size_t rx_timeout)
 
size_t get_rx_timeout ()
 
void write_array (const uint8_t *data, size_t len)
 
void write_array (const std::vector< uint8_t > &data)
 
template<size_t N>
void write_array (const std::array< uint8_t, N > &data)
 
void write_str (const char *str)
 
bool read_byte (uint8_t *data)
 
bool peek_byte (uint8_t *data)
 
bool read_array (uint8_t *data, size_t len)
 
template<size_t N>
optional< std::array< uint8_t, N > > read_array ()
 
int available ()
 
void flush ()
 
int read ()
 
size_t write (uint8_t data)
 
int peek ()
 
void check_uart_settings (uint32_t baud_rate, uint8_t stop_bits=1, UARTParityOptions parity=UART_CONFIG_PARITY_NONE, uint8_t data_bits=8)
 Check that the configuration of the UART bus matches the provided values and otherwise print a warning.
 
- Public Member Functions inherited from esphome::Component
virtual float get_setup_priority () const
 priority of setup().
 
float get_actual_setup_priority () const
 
void set_setup_priority (float priority)
 
virtual float get_loop_priority () const
 priority of loop().
 
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.
 
virtual void mark_failed ()
 Mark this component as failed.
 
 ESPDEPRECATED ("Use mark_failed(LOG_STR(\"static string literal\")) instead. Do NOT use .c_str() from temporary " "strings. Will stop working in 2026.6.0", "2025.12.0") void mark_failed(const char *message)
 
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 (const char *message=nullptr)
 
void status_set_warning (const LogString *message)
 
void status_set_error ()
 
 ESPDEPRECATED ("Use status_set_error(LOG_STR(\"static string literal\")) instead. Do NOT use .c_str() from temporary " "strings. Will stop working in 2026.6.0", "2025.12.0") void status_set_error(const char *message)
 
void status_set_error (const LogString *message)
 
void status_clear_warning ()
 
void status_clear_error ()
 
void status_momentary_warning (const char *name, uint32_t length=5000)
 Set warning status flag and automatically clear it after a timeout.
 
void status_momentary_error (const char *name, uint32_t length=5000)
 Set error status flag and automatically clear it after a timeout.
 
bool has_overridden_loop () const
 
void set_component_source (const LogString *source)
 Set where this component was loaded from for some debug messages.
 
const LogString * get_component_log_str () const
 Get the integration where this component was declared as a LogString for logging.
 
bool should_warn_of_blocking (uint32_t blocking_time)
 

Protected Member Functions

void read_data_ ()
 
- Protected Member Functions inherited from esphome::EntityBase
void calc_object_id_ ()
 
bool is_object_id_dynamic_ () const
 Check if the object_id is dynamic (changes with MAC suffix)
 
- Protected Member Functions inherited from esphome::Component
virtual void call_loop ()
 
virtual void call_setup ()
 
virtual void call_dump_config ()
 
void set_component_state_ (uint8_t state)
 Helper to set component state (clears state bits and sets new state)
 
void set_interval (const std::string &name, uint32_t interval, std::function< void()> &&f)
 Set an interval function with a unique name.
 
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 interval, std::function< void()> &&f)
 
bool cancel_interval (const std::string &name)
 Cancel an interval function.
 
bool cancel_interval (const char *name)
 
void set_retry (const std::string &name, uint32_t initial_wait_time, uint8_t max_attempts, std::function< RetryResult(uint8_t)> &&f, float backoff_increase_factor=1.0f)
 Set an retry function with a unique name.
 
void set_retry (const char *name, uint32_t initial_wait_time, uint8_t max_attempts, std::function< RetryResult(uint8_t)> &&f, float backoff_increase_factor=1.0f)
 
void set_retry (uint32_t initial_wait_time, uint8_t max_attempts, std::function< RetryResult(uint8_t)> &&f, float backoff_increase_factor=1.0f)
 
bool cancel_retry (const std::string &name)
 Cancel a retry function.
 
bool cancel_retry (const char *name)
 
void set_timeout (const std::string &name, uint32_t timeout, std::function< void()> &&f)
 Set a timeout function with a unique name.
 
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 timeout, std::function< void()> &&f)
 
bool cancel_timeout (const std::string &name)
 Cancel a timeout function.
 
bool cancel_timeout (const char *name)
 
void defer (const std::string &name, std::function< void()> &&f)
 Defer a callback to the next loop() call.
 
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.
 
bool cancel_defer (const std::string &name)
 Cancel a defer callback using the specified name, name must not be empty.
 

Protected Attributes

std::vector< EventMatchermatchers_
 
std::vector< uint8_t > buffer_
 
size_t max_matcher_len_ = 0
 
- Protected Attributes inherited from esphome::event::Event
LazyCallbackManager< void(const std::string &event_type)> event_callback_
 
FixedVector< const char * > types_
 
- Protected Attributes inherited from esphome::EntityBase
StringRef name_
 
const char * object_id_c_str_ {nullptr}
 
const char * icon_c_str_ {nullptr}
 
uint32_t object_id_hash_ {}
 
Devicedevice_ {}
 
struct esphome::EntityBase::EntityFlags flags_
 
- Protected Attributes inherited from esphome::EntityBase_DeviceClass
const char * device_class_ {nullptr}
 Device class override.
 
- Protected Attributes inherited from esphome::uart::UARTDevice
UARTComponentparent_ {nullptr}
 
- Protected Attributes inherited from esphome::Component
const LogString * component_source_ {nullptr}
 
uint16_t warn_if_blocking_over_ {WARN_IF_BLOCKING_OVER_MS}
 Warn if blocked for this many ms (max 65.5s)
 
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 Bits 5-7: Unused - reserved for future expansion.
 
volatile bool pending_enable_loop_ {false}
 ISR-safe flag for enable_loop_soon_any_context.
 

Detailed Description

Definition at line 10 of file uart_event.h.

Member Function Documentation

◆ add_event_matcher()

void esphome::uart::UARTEvent::add_event_matcher ( const char * event_name,
const uint8_t * match_data,
size_t match_data_len )

Definition at line 15 of file uart_event.cpp.

◆ dump_config()

void esphome::uart::UARTEvent::dump_config ( )
overridevirtual

Reimplemented from esphome::Component.

Definition at line 11 of file uart_event.cpp.

◆ loop()

void esphome::uart::UARTEvent::loop ( )
overridevirtual

Reimplemented from esphome::Component.

Definition at line 13 of file uart_event.cpp.

◆ read_data_()

void esphome::uart::UARTEvent::read_data_ ( )
protected

Definition at line 22 of file uart_event.cpp.

◆ setup()

void esphome::uart::UARTEvent::setup ( )
overridevirtual

Reimplemented from esphome::Component.

Definition at line 9 of file uart_event.cpp.

Field Documentation

◆ buffer_

std::vector<uint8_t> esphome::uart::UARTEvent::buffer_
protected

Definition at line 27 of file uart_event.h.

◆ matchers_

std::vector<EventMatcher> esphome::uart::UARTEvent::matchers_
protected

Definition at line 26 of file uart_event.h.

◆ max_matcher_len_

size_t esphome::uart::UARTEvent::max_matcher_len_ = 0
protected

Definition at line 28 of file uart_event.h.


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