Refactor API entity update dispatch to reduce code duplication

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/ci-docker.yml

@@ -49,7 +49,7 @@ jobs:
         with:
           python-version: "3.10"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.10.0
+        uses: docker/setup-buildx-action@v3.11.1
 
       - name: Set TAG
         run: |

.github/workflows/lock.yml

@@ -1,28 +1,11 @@
 ---
-name: Lock
+name: Lock closed issues and PRs
 
 on:
   schedule:
-    - cron: "30 0 * * *"
+    - cron: "30 0 * * *"  # Run daily at 00:30 UTC
   workflow_dispatch:
 
-permissions:
-  issues: write
-  pull-requests: write
-
-concurrency:
-  group: lock
-
 jobs:
   lock:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: dessant/lock-threads@v5.0.1
-        with:
-          pr-inactive-days: "1"
-          pr-lock-reason: ""
-          exclude-any-pr-labels: keep-open
-
-          issue-inactive-days: "7"
-          issue-lock-reason: ""
-          exclude-any-issue-labels: keep-open
+    uses: esphome/workflows/.github/workflows/lock.yml@main

.github/workflows/release.yml

@@ -99,7 +99,7 @@ jobs:
           python-version: "3.10"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.10.0
+        uses: docker/setup-buildx-action@v3.11.1
 
       - name: Log in to docker hub
         uses: docker/login-action@v3.4.0
@@ -178,7 +178,7 @@ jobs:
           merge-multiple: true
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.10.0
+        uses: docker/setup-buildx-action@v3.11.1
 
       - name: Log in to docker hub
         if: matrix.registry == 'dockerhub'

.pre-commit-config.yaml

@@ -4,7 +4,7 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.11.10
+    rev: v0.12.2
     hooks:
       # Run the linter.
       - id: ruff
@@ -12,7 +12,7 @@ repos:
       # Run the formatter.
       - id: ruff-format
   - repo: https://github.com/PyCQA/flake8
-    rev: 7.2.0
+    rev: 7.3.0
     hooks:
       - id: flake8
         additional_dependencies:

CODEOWNERS

@@ -87,6 +87,7 @@ esphome/components/bp1658cj/* @Cossid
 esphome/components/bp5758d/* @Cossid
 esphome/components/button/* @esphome/core
 esphome/components/bytebuffer/* @clydebarrow
+esphome/components/camera/* @DT-art1 @bdraco
 esphome/components/canbus/* @danielschramm @mvturnho
 esphome/components/cap1188/* @mreditor97
 esphome/components/captive_portal/* @OttoWinter
@@ -124,6 +125,7 @@ esphome/components/dht/* @OttoWinter
 esphome/components/display_menu_base/* @numo68
 esphome/components/dps310/* @kbx81
 esphome/components/ds1307/* @badbadc0ffee
+esphome/components/ds2484/* @mrk-its
 esphome/components/dsmr/* @glmnet @zuidwijk
 esphome/components/duty_time/* @dudanov
 esphome/components/ee895/* @Stock-M
@@ -146,6 +148,7 @@ esphome/components/esp32_ble_client/* @jesserockz
 esphome/components/esp32_ble_server/* @Rapsssito @clydebarrow @jesserockz
 esphome/components/esp32_camera_web_server/* @ayufan
 esphome/components/esp32_can/* @Sympatron
+esphome/components/esp32_hosted/* @swoboda1337
 esphome/components/esp32_improv/* @jesserockz
 esphome/components/esp32_rmt/* @jesserockz
 esphome/components/esp32_rmt_led_strip/* @jesserockz
@@ -247,6 +250,7 @@ esphome/components/libretiny_pwm/* @kuba2k2
 esphome/components/light/* @esphome/core
 esphome/components/lightwaverf/* @max246
 esphome/components/lilygo_t5_47/touchscreen/* @jesserockz
+esphome/components/ln882x/* @lamauny
 esphome/components/lock/* @esphome/core
 esphome/components/logger/* @esphome/core
 esphome/components/logger/select/* @clydebarrow
@@ -323,13 +327,16 @@ esphome/components/one_wire/* @ssieb
 esphome/components/online_image/* @clydebarrow @guillempages
 esphome/components/opentherm/* @olegtarasov
 esphome/components/openthread/* @mrene
+esphome/components/opt3001/* @ccutrer
 esphome/components/ota/* @esphome/core
+esphome/components/ota_base/* @esphome/core
 esphome/components/output/* @esphome/core
 esphome/components/packet_transport/* @clydebarrow
 esphome/components/pca6416a/* @Mat931
 esphome/components/pca9554/* @clydebarrow @hwstar
 esphome/components/pcf85063/* @brogon
 esphome/components/pcf8563/* @KoenBreeman
+esphome/components/pi4ioe5v6408/* @jesserockz
 esphome/components/pid/* @OttoWinter
 esphome/components/pipsolar/* @andreashergert1984
 esphome/components/pm1006/* @habbie
@@ -436,6 +443,8 @@ esphome/components/sun/* @OttoWinter
 esphome/components/sun_gtil2/* @Mat931
 esphome/components/switch/* @esphome/core
 esphome/components/switch/binary_sensor/* @ssieb
+esphome/components/sx126x/* @swoboda1337
+esphome/components/sx127x/* @swoboda1337
 esphome/components/syslog/* @clydebarrow
 esphome/components/t6615/* @tylermenezes
 esphome/components/tc74/* @sethgirvan
@@ -490,10 +499,11 @@ esphome/components/vbus/* @ssieb
 esphome/components/veml3235/* @kbx81
 esphome/components/veml7700/* @latonita
 esphome/components/version/* @esphome/core
-esphome/components/voice_assistant/* @jesserockz
+esphome/components/voice_assistant/* @jesserockz @kahrendt
 esphome/components/wake_on_lan/* @clydebarrow @willwill2will54
 esphome/components/watchdog/* @oarcher
 esphome/components/waveshare_epaper/* @clydebarrow
+esphome/components/web_server/ota/* @esphome/core
 esphome/components/web_server_base/* @OttoWinter
 esphome/components/web_server_idf/* @dentra
 esphome/components/weikai/* @DrCoolZic
@@ -520,6 +530,7 @@ esphome/components/xiaomi_lywsd03mmc/* @ahpohl
 esphome/components/xiaomi_mhoc303/* @drug123
 esphome/components/xiaomi_mhoc401/* @vevsvevs
 esphome/components/xiaomi_rtcgq02lm/* @jesserockz
+esphome/components/xiaomi_xmwsdj04mmc/* @medusalix
 esphome/components/xl9535/* @mreditor97
 esphome/components/xpt2046/touchscreen/* @nielsnl68 @numo68
 esphome/components/xxtea/* @clydebarrow

Doxyfile

@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2025.6.0
+PROJECT_NUMBER         = 2025.7.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

esphome/__main__.py

@@ -34,11 +34,9 @@ from esphome.const import (
     CONF_PORT,
     CONF_SUBSTITUTIONS,
     CONF_TOPIC,
-    PLATFORM_BK72XX,
     PLATFORM_ESP32,
     PLATFORM_ESP8266,
     PLATFORM_RP2040,
-    PLATFORM_RTL87XX,
     SECRETS_FILES,
 )
 from esphome.core import CORE, EsphomeError, coroutine
@@ -354,7 +352,7 @@ def upload_program(config, args, host):
         if CORE.target_platform in (PLATFORM_RP2040):
             return upload_using_platformio(config, args.device)
 
-        if CORE.target_platform in (PLATFORM_BK72XX, PLATFORM_RTL87XX):
+        if CORE.is_libretiny:
             return upload_using_platformio(config, host)
 
         return 1  # Unknown target platform

esphome/codegen.py

@@ -22,6 +22,7 @@ from esphome.cpp_generator import (  # noqa: F401
     TemplateArguments,
     add,
     add_build_flag,
+    add_build_unflag,
     add_define,
     add_global,
     add_library,
@@ -34,6 +35,7 @@ from esphome.cpp_generator import (  # noqa: F401
     process_lambda,
     progmem_array,
     safe_exp,
+    set_cpp_standard,
     statement,
     static_const_array,
     templatable,

esphome/components/ac_dimmer/ac_dimmer.cpp

@@ -4,6 +4,7 @@
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 #include <cmath>
+#include <numbers>
 
 #ifdef USE_ESP8266
 #include <core_esp8266_waveform.h>
@@ -193,18 +194,17 @@ void AcDimmer::setup() {
   setTimer1Callback(&timer_interrupt);
 #endif
 #ifdef USE_ESP32
-  // 80 Divider -> 1 count=1µs
-  dimmer_timer = timerBegin(0, 80, true);
-  timerAttachInterrupt(dimmer_timer, &AcDimmerDataStore::s_timer_intr, true);
+  // timer frequency of 1mhz
+  dimmer_timer = timerBegin(1000000);
+  timerAttachInterrupt(dimmer_timer, &AcDimmerDataStore::s_timer_intr);
   // For ESP32, we can't use dynamic interval calculation because the timerX functions
   // are not callable from ISR (placed in flash storage).
   // Here we just use an interrupt firing every 50 µs.
-  timerAlarmWrite(dimmer_timer, 50, true);
-  timerAlarmEnable(dimmer_timer);
+  timerAlarm(dimmer_timer, 50, true, 0);
 #endif
 }
 void AcDimmer::write_state(float state) {
-  state = std::acos(1 - (2 * state)) / 3.14159;  // RMS power compensation
+  state = std::acos(1 - (2 * state)) / std::numbers::pi;  // RMS power compensation
   auto new_value = static_cast<uint16_t>(roundf(state * 65535));
   if (new_value != 0 && this->store_.value == 0)
     this->store_.init_cycle = this->init_with_half_cycle_;

esphome/components/adc/__init__.py

@@ -10,8 +10,15 @@ from esphome.components.esp32.const import (
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
 )
+from esphome.config_helpers import filter_source_files_from_platform
 import esphome.config_validation as cv
-from esphome.const import CONF_ANALOG, CONF_INPUT, CONF_NUMBER, PLATFORM_ESP8266
+from esphome.const import (
+    CONF_ANALOG,
+    CONF_INPUT,
+    CONF_NUMBER,
+    PLATFORM_ESP8266,
+    PlatformFramework,
+)
 from esphome.core import CORE
 
 CODEOWNERS = ["@esphome/core"]
@@ -229,3 +236,20 @@ def validate_adc_pin(value):
         )(value)
 
     raise NotImplementedError
+
+
+FILTER_SOURCE_FILES = filter_source_files_from_platform(
+    {
+        "adc_sensor_esp32.cpp": {
+            PlatformFramework.ESP32_ARDUINO,
+            PlatformFramework.ESP32_IDF,
+        },
+        "adc_sensor_esp8266.cpp": {PlatformFramework.ESP8266_ARDUINO},
+        "adc_sensor_rp2040.cpp": {PlatformFramework.RP2040_ARDUINO},
+        "adc_sensor_libretiny.cpp": {
+            PlatformFramework.BK72XX_ARDUINO,
+            PlatformFramework.RTL87XX_ARDUINO,
+            PlatformFramework.LN882X_ARDUINO,
+        },
+    }
+)

esphome/components/adc/adc_sensor.h

@@ -15,8 +15,7 @@ namespace adc {
 
 #ifdef USE_ESP32
 // clang-format off
-#if (ESP_IDF_VERSION_MAJOR == 4 && ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 4, 7)) || \
-    (ESP_IDF_VERSION_MAJOR == 5 && \
+#if (ESP_IDF_VERSION_MAJOR == 5 && \
      ((ESP_IDF_VERSION_MINOR == 0 && ESP_IDF_VERSION_PATCH >= 5) || \
       (ESP_IDF_VERSION_MINOR == 1 && ESP_IDF_VERSION_PATCH >= 3) || \
       (ESP_IDF_VERSION_MINOR >= 2)) \
@@ -28,19 +27,24 @@ static const adc_atten_t ADC_ATTEN_DB_12_COMPAT = ADC_ATTEN_DB_11;
 #endif
 #endif  // USE_ESP32
 
-enum class SamplingMode : uint8_t { AVG = 0, MIN = 1, MAX = 2 };
+enum class SamplingMode : uint8_t {
+  AVG = 0,
+  MIN = 1,
+  MAX = 2,
+};
+
 const LogString *sampling_mode_to_str(SamplingMode mode);
 
 class Aggregator {
  public:
+  Aggregator(SamplingMode mode);
   void add_sample(uint32_t value);
   uint32_t aggregate();
-  Aggregator(SamplingMode mode);
 
  protected:
-  SamplingMode mode_{SamplingMode::AVG};
   uint32_t aggr_{0};
   uint32_t samples_{0};
+  SamplingMode mode_{SamplingMode::AVG};
 };
 
 class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage_sampler::VoltageSampler {
@@ -81,9 +85,9 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
 #endif  // USE_RP2040
 
  protected:
-  InternalGPIOPin *pin_;
-  bool output_raw_{false};
   uint8_t sample_count_{1};
+  bool output_raw_{false};
+  InternalGPIOPin *pin_;
   SamplingMode sampling_mode_{SamplingMode::AVG};
 
 #ifdef USE_RP2040
@@ -95,11 +99,7 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
   adc1_channel_t channel1_{ADC1_CHANNEL_MAX};
   adc2_channel_t channel2_{ADC2_CHANNEL_MAX};
   bool autorange_{false};
-#if ESP_IDF_VERSION_MAJOR >= 5
   esp_adc_cal_characteristics_t cal_characteristics_[SOC_ADC_ATTEN_NUM] = {};
-#else
-  esp_adc_cal_characteristics_t cal_characteristics_[ADC_ATTEN_MAX] = {};
-#endif  // ESP_IDF_VERSION_MAJOR
 #endif  // USE_ESP32
 };
 

esphome/components/adc/adc_sensor_common.cpp

@@ -61,7 +61,7 @@ uint32_t Aggregator::aggregate() {
 
 void ADCSensor::update() {
   float value_v = this->sample();
-  ESP_LOGV(TAG, "'%s': Got voltage=%.4fV", this->get_name().c_str(), value_v);
+  ESP_LOGV(TAG, "'%s': Voltage=%.4fV", this->get_name().c_str(), value_v);
   this->publish_state(value_v);
 }
 

esphome/components/adc/adc_sensor_esp32.cpp

@@ -55,32 +55,40 @@ void ADCSensor::setup() {
 }
 
 void ADCSensor::dump_config() {
+  static const char *const ATTEN_AUTO_STR = "auto";
+  static const char *const ATTEN_0DB_STR = "0 db";
+  static const char *const ATTEN_2_5DB_STR = "2.5 db";
+  static const char *const ATTEN_6DB_STR = "6 db";
+  static const char *const ATTEN_12DB_STR = "12 db";
+  const char *atten_str = ATTEN_AUTO_STR;
+
   LOG_SENSOR("", "ADC Sensor", this);
   LOG_PIN("  Pin: ", this->pin_);
-  if (this->autorange_) {
-    ESP_LOGCONFIG(TAG, "  Attenuation: auto");
-  } else {
+
+  if (!this->autorange_) {
     switch (this->attenuation_) {
       case ADC_ATTEN_DB_0:
-        ESP_LOGCONFIG(TAG, "  Attenuation: 0db");
+        atten_str = ATTEN_0DB_STR;
         break;
       case ADC_ATTEN_DB_2_5:
-        ESP_LOGCONFIG(TAG, "  Attenuation: 2.5db");
+        atten_str = ATTEN_2_5DB_STR;
         break;
       case ADC_ATTEN_DB_6:
-        ESP_LOGCONFIG(TAG, "  Attenuation: 6db");
+        atten_str = ATTEN_6DB_STR;
         break;
       case ADC_ATTEN_DB_12_COMPAT:
-        ESP_LOGCONFIG(TAG, "  Attenuation: 12db");
+        atten_str = ATTEN_12DB_STR;
         break;
       default:  // This is to satisfy the unused ADC_ATTEN_MAX
         break;
     }
   }
+
   ESP_LOGCONFIG(TAG,
+                "  Attenuation: %s\n"
                 "  Samples: %i\n"
                 "  Sampling mode: %s",
-                this->sample_count_, LOG_STR_ARG(sampling_mode_to_str(this->sampling_mode_)));
+                atten_str, this->sample_count_, LOG_STR_ARG(sampling_mode_to_str(this->sampling_mode_)));
   LOG_UPDATE_INTERVAL(this);
 }
 

esphome/components/ade7880/ade7880.h

@@ -85,8 +85,6 @@ class ADE7880 : public i2c::I2CDevice, public PollingComponent {
 
   void dump_config() override;
 
-  float get_setup_priority() const override { return setup_priority::DATA; }
-
  protected:
   ADE7880Store store_{};
   InternalGPIOPin *irq0_pin_{nullptr};

esphome/components/ads1115/ads1115.h

@@ -49,7 +49,6 @@ class ADS1115Component : public Component, public i2c::I2CDevice {
   void setup() override;
   void dump_config() override;
   /// HARDWARE_LATE setup priority
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_continuous_mode(bool continuous_mode) { continuous_mode_ = continuous_mode; }
 
   /// Helper method to request a measurement from a sensor.

esphome/components/ads1118/ads1118.h

@@ -34,7 +34,6 @@ class ADS1118 : public Component,
   ADS1118() = default;
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   /// Helper method to request a measurement from a sensor.
   float request_measurement(ADS1118Multiplexer multiplexer, ADS1118Gain gain, bool temperature_mode);
 

esphome/components/ags10/ags10.h

@@ -31,8 +31,6 @@ class AGS10Component : public PollingComponent, public i2c::I2CDevice {
 
   void dump_config() override;
 
-  float get_setup_priority() const override { return setup_priority::DATA; }
-
   /**
    * Modifies target address of AGS10.
    *

esphome/components/aic3204/aic3204.h

@@ -66,7 +66,6 @@ class AIC3204 : public audio_dac::AudioDac, public Component, public i2c::I2CDev
  public:
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   bool set_mute_off() override;
   bool set_mute_on() override;

esphome/components/alarm_control_panel/__init__.py

@@ -14,8 +14,8 @@ from esphome.const import (
     CONF_WEB_SERVER,
 )
 from esphome.core import CORE, coroutine_with_priority
+from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
-from esphome.cpp_helpers import setup_entity
 
 CODEOWNERS = ["@grahambrown11", "@hwstar"]
 IS_PLATFORM_COMPONENT = True
@@ -149,6 +149,9 @@ _ALARM_CONTROL_PANEL_SCHEMA = (
 )
 
 
+_ALARM_CONTROL_PANEL_SCHEMA.add_extra(entity_duplicate_validator("alarm_control_panel"))
+
+
 def alarm_control_panel_schema(
     class_: MockObjClass,
     *,
@@ -190,7 +193,7 @@ ALARM_CONTROL_PANEL_CONDITION_SCHEMA = maybe_simple_id(
 
 
 async def setup_alarm_control_panel_core_(var, config):
-    await setup_entity(var, config)
+    await setup_entity(var, config, "alarm_control_panel")
     for conf in config.get(CONF_ON_STATE, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
         await automation.build_automation(trigger, [], conf)

esphome/components/alpha3/alpha3.h

@@ -41,7 +41,6 @@ class Alpha3 : public esphome::ble_client::BLEClientNode, public PollingComponen
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_flow_sensor(sensor::Sensor *sensor) { this->flow_sensor_ = sensor; }
   void set_head_sensor(sensor::Sensor *sensor) { this->head_sensor_ = sensor; }
   void set_power_sensor(sensor::Sensor *sensor) { this->power_sensor_ = sensor; }

esphome/components/am43/cover/am43_cover.h

@@ -22,7 +22,6 @@ class Am43Component : public cover::Cover, public esphome::ble_client::BLEClient
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   cover::CoverTraits get_traits() override;
   void set_pin(uint16_t pin) { this->pin_ = pin; }
   void set_invert_position(bool invert_position) { this->invert_position_ = invert_position; }

esphome/components/am43/sensor/am43_sensor.h

@@ -22,7 +22,6 @@ class Am43 : public esphome::ble_client::BLEClientNode, public PollingComponent
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_battery(sensor::Sensor *battery) { battery_ = battery; }
   void set_illuminance(sensor::Sensor *illuminance) { illuminance_ = illuminance; }
 

esphome/components/analog_threshold/analog_threshold_binary_sensor.h

@@ -12,8 +12,6 @@ class AnalogThresholdBinarySensor : public Component, public binary_sensor::Bina
   void dump_config() override;
   void setup() override;
 
-  float get_setup_priority() const override { return setup_priority::DATA; }
-
   void set_sensor(sensor::Sensor *analog_sensor);
   template<typename T> void set_upper_threshold(T upper_threshold) { this->upper_threshold_ = upper_threshold; }
   template<typename T> void set_lower_threshold(T lower_threshold) { this->lower_threshold_ = lower_threshold; }

esphome/components/anova/anova.cpp

@@ -17,7 +17,11 @@ void Anova::setup() {
   this->current_request_ = 0;
 }
 
-void Anova::loop() {}
+void Anova::loop() {
+  // Parent BLEClientNode has a loop() method, but this component uses
+  // polling via update() and BLE callbacks so loop isn't needed
+  this->disable_loop();
+}
 
 void Anova::control(const ClimateCall &call) {
   if (call.get_mode().has_value()) {

esphome/components/anova/anova.h

@@ -26,7 +26,6 @@ class Anova : public climate::Climate, public esphome::ble_client::BLEClientNode
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   climate::ClimateTraits traits() override {
     auto traits = climate::ClimateTraits();
     traits.set_supports_current_temperature(true);

esphome/components/api/__init__.py

@@ -23,7 +23,7 @@ from esphome.const import (
     CONF_TRIGGER_ID,
     CONF_VARIABLES,
 )
-from esphome.core import coroutine_with_priority
+from esphome.core import CORE, coroutine_with_priority
 
 DEPENDENCIES = ["network"]
 AUTO_LOAD = ["socket"]
@@ -110,9 +110,10 @@ CONFIG_SCHEMA = cv.All(
             ): ACTIONS_SCHEMA,
             cv.Exclusive(CONF_ACTIONS, group_of_exclusion=CONF_ACTIONS): ACTIONS_SCHEMA,
             cv.Optional(CONF_ENCRYPTION): _encryption_schema,
-            cv.Optional(
-                CONF_BATCH_DELAY, default="100ms"
-            ): cv.positive_time_period_milliseconds,
+            cv.Optional(CONF_BATCH_DELAY, default="100ms"): cv.All(
+                cv.positive_time_period_milliseconds,
+                cv.Range(max=cv.TimePeriod(milliseconds=65535)),
+            ),
             cv.Optional(CONF_ON_CLIENT_CONNECTED): automation.validate_automation(
                 single=True
             ),
@@ -131,27 +132,32 @@ async def to_code(config):
     await cg.register_component(var, config)
 
     cg.add(var.set_port(config[CONF_PORT]))
-    cg.add(var.set_password(config[CONF_PASSWORD]))
+    if config[CONF_PASSWORD]:
+        cg.add_define("USE_API_PASSWORD")
+        cg.add(var.set_password(config[CONF_PASSWORD]))
     cg.add(var.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
     cg.add(var.set_batch_delay(config[CONF_BATCH_DELAY]))
 
-    for conf in config.get(CONF_ACTIONS, []):
-        template_args = []
-        func_args = []
-        service_arg_names = []
-        for name, var_ in conf[CONF_VARIABLES].items():
-            native = SERVICE_ARG_NATIVE_TYPES[var_]
-            template_args.append(native)
-            func_args.append((native, name))
-            service_arg_names.append(name)
-        templ = cg.TemplateArguments(*template_args)
-        trigger = cg.new_Pvariable(
-            conf[CONF_TRIGGER_ID], templ, conf[CONF_ACTION], service_arg_names
-        )
-        cg.add(var.register_user_service(trigger))
-        await automation.build_automation(trigger, func_args, conf)
+    if actions := config.get(CONF_ACTIONS, []):
+        cg.add_define("USE_API_YAML_SERVICES")
+        for conf in actions:
+            template_args = []
+            func_args = []
+            service_arg_names = []
+            for name, var_ in conf[CONF_VARIABLES].items():
+                native = SERVICE_ARG_NATIVE_TYPES[var_]
+                template_args.append(native)
+                func_args.append((native, name))
+                service_arg_names.append(name)
+            templ = cg.TemplateArguments(*template_args)
+            trigger = cg.new_Pvariable(
+                conf[CONF_TRIGGER_ID], templ, conf[CONF_ACTION], service_arg_names
+            )
+            cg.add(var.register_user_service(trigger))
+            await automation.build_automation(trigger, func_args, conf)
 
     if CONF_ON_CLIENT_CONNECTED in config:
+        cg.add_define("USE_API_CLIENT_CONNECTED_TRIGGER")
         await automation.build_automation(
             var.get_client_connected_trigger(),
             [(cg.std_string, "client_info"), (cg.std_string, "client_address")],
@@ -159,6 +165,7 @@ async def to_code(config):
         )
 
     if CONF_ON_CLIENT_DISCONNECTED in config:
+        cg.add_define("USE_API_CLIENT_DISCONNECTED_TRIGGER")
         await automation.build_automation(
             var.get_client_disconnected_trigger(),
             [(cg.std_string, "client_info"), (cg.std_string, "client_address")],
@@ -177,7 +184,7 @@ async def to_code(config):
             # and plaintext disabled. Only a factory reset can remove it.
             cg.add_define("USE_API_PLAINTEXT")
         cg.add_define("USE_API_NOISE")
-        cg.add_library("esphome/noise-c", "0.1.6")
+        cg.add_library("esphome/noise-c", "0.1.10")
     else:
         cg.add_define("USE_API_PLAINTEXT")
 
@@ -306,3 +313,14 @@ async def homeassistant_tag_scanned_to_code(config, action_id, template_arg, arg
 @automation.register_condition("api.connected", APIConnectedCondition, {})
 async def api_connected_to_code(config, condition_id, template_arg, args):
     return cg.new_Pvariable(condition_id, template_arg)
+
+
+def FILTER_SOURCE_FILES() -> list[str]:
+    """Filter out api_pb2_dump.cpp when proto message dumping is not enabled."""
+    # api_pb2_dump.cpp is only needed when HAS_PROTO_MESSAGE_DUMP is defined
+    # This is a particularly large file that still needs to be opened and read
+    # all the way to the end even when ifdef'd out
+    if "HAS_PROTO_MESSAGE_DUMP" not in CORE.defines:
+        return ["api_pb2_dump.cpp"]
+
+    return []

esphome/components/api/api.proto

@@ -188,6 +188,17 @@ message DeviceInfoRequest {
   // Empty
 }
 
+message AreaInfo {
+  uint32 area_id = 1;
+  string name = 2;
+}
+
+message DeviceInfo {
+  uint32 device_id = 1;
+  string name = 2;
+  uint32 area_id = 3;
+}
+
 message DeviceInfoResponse {
   option (id) = 10;
   option (source) = SOURCE_SERVER;
@@ -236,6 +247,12 @@ message DeviceInfoResponse {
 
   // Supports receiving and saving api encryption key
   bool api_encryption_supported = 19;
+
+  repeated DeviceInfo devices = 20;
+  repeated AreaInfo areas = 21;
+
+  // Top-level area info to phase out suggested_area
+  AreaInfo area = 22;
 }
 
 message ListEntitiesRequest {
@@ -280,6 +297,7 @@ message ListEntitiesBinarySensorResponse {
   bool disabled_by_default = 7;
   string icon = 8;
   EntityCategory entity_category = 9;
+  uint32 device_id = 10;
 }
 message BinarySensorStateResponse {
   option (id) = 21;
@@ -293,6 +311,7 @@ message BinarySensorStateResponse {
   // If the binary sensor does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 
 // ==================== COVER ====================
@@ -315,6 +334,7 @@ message ListEntitiesCoverResponse {
   string icon = 10;
   EntityCategory entity_category = 11;
   bool supports_stop = 12;
+  uint32 device_id = 13;
 }
 
 enum LegacyCoverState {
@@ -341,6 +361,7 @@ message CoverStateResponse {
   float position = 3;
   float tilt = 4;
   CoverOperation current_operation = 5;
+  uint32 device_id = 6;
 }
 
 enum LegacyCoverCommand {
@@ -388,6 +409,7 @@ message ListEntitiesFanResponse {
   string icon = 10;
   EntityCategory entity_category = 11;
   repeated string supported_preset_modes = 12;
+  uint32 device_id = 13;
 }
 enum FanSpeed {
   FAN_SPEED_LOW = 0;
@@ -412,6 +434,7 @@ message FanStateResponse {
   FanDirection direction = 5;
   int32 speed_level = 6;
   string preset_mode = 7;
+  uint32 device_id = 8;
 }
 message FanCommandRequest {
   option (id) = 31;
@@ -471,6 +494,7 @@ message ListEntitiesLightResponse {
   bool disabled_by_default = 13;
   string icon = 14;
   EntityCategory entity_category = 15;
+  uint32 device_id = 16;
 }
 message LightStateResponse {
   option (id) = 24;
@@ -492,6 +516,7 @@ message LightStateResponse {
   float cold_white = 12;
   float warm_white = 13;
   string effect = 9;
+  uint32 device_id = 14;
 }
 message LightCommandRequest {
   option (id) = 32;
@@ -563,6 +588,7 @@ message ListEntitiesSensorResponse {
   SensorLastResetType legacy_last_reset_type = 11;
   bool disabled_by_default = 12;
   EntityCategory entity_category = 13;
+  uint32 device_id = 14;
 }
 message SensorStateResponse {
   option (id) = 25;
@@ -576,6 +602,7 @@ message SensorStateResponse {
   // If the sensor does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 
 // ==================== SWITCH ====================
@@ -595,6 +622,7 @@ message ListEntitiesSwitchResponse {
   bool disabled_by_default = 7;
   EntityCategory entity_category = 8;
   string device_class = 9;
+  uint32 device_id = 10;
 }
 message SwitchStateResponse {
   option (id) = 26;
@@ -605,6 +633,7 @@ message SwitchStateResponse {
 
   fixed32 key = 1;
   bool state = 2;
+  uint32 device_id = 3;
 }
 message SwitchCommandRequest {
   option (id) = 33;
@@ -632,6 +661,7 @@ message ListEntitiesTextSensorResponse {
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
   string device_class = 8;
+  uint32 device_id = 9;
 }
 message TextSensorStateResponse {
   option (id) = 27;
@@ -645,6 +675,7 @@ message TextSensorStateResponse {
   // If the text sensor does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 
 // ==================== SUBSCRIBE LOGS ====================
@@ -805,7 +836,7 @@ message ListEntitiesCameraResponse {
   option (id) = 43;
   option (base_class) = "InfoResponseProtoMessage";
   option (source) = SOURCE_SERVER;
-  option (ifdef) = "USE_ESP32_CAMERA";
+  option (ifdef) = "USE_CAMERA";
 
   string object_id = 1;
   fixed32 key = 2;
@@ -814,12 +845,13 @@ message ListEntitiesCameraResponse {
   bool disabled_by_default = 5;
   string icon = 6;
   EntityCategory entity_category = 7;
+  uint32 device_id = 8;
 }
 
 message CameraImageResponse {
   option (id) = 44;
   option (source) = SOURCE_SERVER;
-  option (ifdef) = "USE_ESP32_CAMERA";
+  option (ifdef) = "USE_CAMERA";
 
   fixed32 key = 1;
   bytes data = 2;
@@ -828,7 +860,7 @@ message CameraImageResponse {
 message CameraImageRequest {
   option (id) = 45;
   option (source) = SOURCE_CLIENT;
-  option (ifdef) = "USE_ESP32_CAMERA";
+  option (ifdef) = "USE_CAMERA";
   option (no_delay) = true;
 
   bool single = 1;
@@ -916,6 +948,7 @@ message ListEntitiesClimateResponse {
   bool supports_target_humidity = 23;
   float visual_min_humidity = 24;
   float visual_max_humidity = 25;
+  uint32 device_id = 26;
 }
 message ClimateStateResponse {
   option (id) = 47;
@@ -940,6 +973,7 @@ message ClimateStateResponse {
   string custom_preset = 13;
   float current_humidity = 14;
   float target_humidity = 15;
+  uint32 device_id = 16;
 }
 message ClimateCommandRequest {
   option (id) = 48;
@@ -999,6 +1033,7 @@ message ListEntitiesNumberResponse {
   string unit_of_measurement = 11;
   NumberMode mode = 12;
   string device_class = 13;
+  uint32 device_id = 14;
 }
 message NumberStateResponse {
   option (id) = 50;
@@ -1012,6 +1047,7 @@ message NumberStateResponse {
   // If the number does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 message NumberCommandRequest {
   option (id) = 51;
@@ -1039,6 +1075,7 @@ message ListEntitiesSelectResponse {
   repeated string options = 6;
   bool disabled_by_default = 7;
   EntityCategory entity_category = 8;
+  uint32 device_id = 9;
 }
 message SelectStateResponse {
   option (id) = 53;
@@ -1052,6 +1089,7 @@ message SelectStateResponse {
   // If the select does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 message SelectCommandRequest {
   option (id) = 54;
@@ -1081,6 +1119,7 @@ message ListEntitiesSirenResponse {
   bool supports_duration = 8;
   bool supports_volume = 9;
   EntityCategory entity_category = 10;
+  uint32 device_id = 11;
 }
 message SirenStateResponse {
   option (id) = 56;
@@ -1091,6 +1130,7 @@ message SirenStateResponse {
 
   fixed32 key = 1;
   bool state = 2;
+  uint32 device_id = 3;
 }
 message SirenCommandRequest {
   option (id) = 57;
@@ -1144,6 +1184,7 @@ message ListEntitiesLockResponse {
 
   // Not yet implemented:
   string code_format = 11;
+  uint32 device_id = 12;
 }
 message LockStateResponse {
   option (id) = 59;
@@ -1153,6 +1194,7 @@ message LockStateResponse {
   option (no_delay) = true;
   fixed32 key = 1;
   LockState state = 2;
+  uint32 device_id = 3;
 }
 message LockCommandRequest {
   option (id) = 60;
@@ -1183,6 +1225,7 @@ message ListEntitiesButtonResponse {
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
   string device_class = 8;
+  uint32 device_id = 9;
 }
 message ButtonCommandRequest {
   option (id) = 62;
@@ -1238,6 +1281,8 @@ message ListEntitiesMediaPlayerResponse {
   bool supports_pause = 8;
 
   repeated MediaPlayerSupportedFormat supported_formats = 9;
+
+  uint32 device_id = 10;
 }
 message MediaPlayerStateResponse {
   option (id) = 64;
@@ -1249,6 +1294,7 @@ message MediaPlayerStateResponse {
   MediaPlayerState state = 2;
   float volume = 3;
   bool muted = 4;
+  uint32 device_id = 5;
 }
 message MediaPlayerCommandRequest {
   option (id) = 65;
@@ -1778,6 +1824,7 @@ message ListEntitiesAlarmControlPanelResponse {
   uint32 supported_features = 8;
   bool requires_code = 9;
   bool requires_code_to_arm = 10;
+  uint32 device_id = 11;
 }
 
 message AlarmControlPanelStateResponse {
@@ -1788,6 +1835,7 @@ message AlarmControlPanelStateResponse {
   option (no_delay) = true;
   fixed32 key = 1;
   AlarmControlPanelState state = 2;
+  uint32 device_id = 3;
 }
 
 message AlarmControlPanelCommandRequest {
@@ -1823,6 +1871,7 @@ message ListEntitiesTextResponse {
   uint32 max_length = 9;
   string pattern = 10;
   TextMode mode = 11;
+  uint32 device_id = 12;
 }
 message TextStateResponse {
   option (id) = 98;
@@ -1836,6 +1885,7 @@ message TextStateResponse {
   // If the Text does not have a valid state yet.
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 3;
+  uint32 device_id = 4;
 }
 message TextCommandRequest {
   option (id) = 99;
@@ -1863,6 +1913,7 @@ message ListEntitiesDateResponse {
   string icon = 5;
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
+  uint32 device_id = 8;
 }
 message DateStateResponse {
   option (id) = 101;
@@ -1878,6 +1929,7 @@ message DateStateResponse {
   uint32 year = 3;
   uint32 month = 4;
   uint32 day = 5;
+  uint32 device_id = 6;
 }
 message DateCommandRequest {
   option (id) = 102;
@@ -1906,6 +1958,7 @@ message ListEntitiesTimeResponse {
   string icon = 5;
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
+  uint32 device_id = 8;
 }
 message TimeStateResponse {
   option (id) = 104;
@@ -1921,6 +1974,7 @@ message TimeStateResponse {
   uint32 hour = 3;
   uint32 minute = 4;
   uint32 second = 5;
+  uint32 device_id = 6;
 }
 message TimeCommandRequest {
   option (id) = 105;
@@ -1952,6 +2006,7 @@ message ListEntitiesEventResponse {
   string device_class = 8;
 
   repeated string event_types = 9;
+  uint32 device_id = 10;
 }
 message EventResponse {
   option (id) = 108;
@@ -1961,6 +2016,7 @@ message EventResponse {
 
   fixed32 key = 1;
   string event_type = 2;
+  uint32 device_id = 3;
 }
 
 // ==================== VALVE ====================
@@ -1983,6 +2039,7 @@ message ListEntitiesValveResponse {
   bool assumed_state = 9;
   bool supports_position = 10;
   bool supports_stop = 11;
+  uint32 device_id = 12;
 }
 
 enum ValveOperation {
@@ -2000,6 +2057,7 @@ message ValveStateResponse {
   fixed32 key = 1;
   float position = 2;
   ValveOperation current_operation = 3;
+  uint32 device_id = 4;
 }
 
 message ValveCommandRequest {
@@ -2029,6 +2087,7 @@ message ListEntitiesDateTimeResponse {
   string icon = 5;
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
+  uint32 device_id = 8;
 }
 message DateTimeStateResponse {
   option (id) = 113;
@@ -2042,6 +2101,7 @@ message DateTimeStateResponse {
   // Equivalent to `!obj->has_state()` - inverse logic to make state packets smaller
   bool missing_state = 2;
   fixed32 epoch_seconds = 3;
+  uint32 device_id = 4;
 }
 message DateTimeCommandRequest {
   option (id) = 114;
@@ -2069,6 +2129,7 @@ message ListEntitiesUpdateResponse {
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
   string device_class = 8;
+  uint32 device_id = 9;
 }
 message UpdateStateResponse {
   option (id) = 117;
@@ -2087,6 +2148,7 @@ message UpdateStateResponse {
   string title = 8;
   string release_summary = 9;
   string release_url = 10;
+  uint32 device_id = 11;
 }
 enum UpdateCommand {
   UPDATE_COMMAND_NONE = 0;

esphome/components/api/api_connection.h

@@ -18,10 +18,13 @@ namespace api {
 
 // Keepalive timeout in milliseconds
 static constexpr uint32_t KEEPALIVE_TIMEOUT_MS = 60000;
+// Maximum number of entities to process in a single batch during initial state/info sending
+static constexpr size_t MAX_INITIAL_PER_BATCH = 20;
 
 class APIConnection : public APIServerConnection {
  public:
   friend class APIServer;
+  friend class ListEntitiesIterator;
   APIConnection(std::unique_ptr<socket::Socket> socket, APIServer *parent);
   virtual ~APIConnection();
 
@@ -34,98 +37,79 @@ class APIConnection : public APIServerConnection {
   }
 #ifdef USE_BINARY_SENSOR
   bool send_binary_sensor_state(binary_sensor::BinarySensor *binary_sensor);
-  void send_binary_sensor_info(binary_sensor::BinarySensor *binary_sensor);
 #endif
 #ifdef USE_COVER
   bool send_cover_state(cover::Cover *cover);
-  void send_cover_info(cover::Cover *cover);
   void cover_command(const CoverCommandRequest &msg) override;
 #endif
 #ifdef USE_FAN
   bool send_fan_state(fan::Fan *fan);
-  void send_fan_info(fan::Fan *fan);
   void fan_command(const FanCommandRequest &msg) override;
 #endif
 #ifdef USE_LIGHT
   bool send_light_state(light::LightState *light);
-  void send_light_info(light::LightState *light);
   void light_command(const LightCommandRequest &msg) override;
 #endif
 #ifdef USE_SENSOR
   bool send_sensor_state(sensor::Sensor *sensor);
-  void send_sensor_info(sensor::Sensor *sensor);
 #endif
 #ifdef USE_SWITCH
   bool send_switch_state(switch_::Switch *a_switch);
-  void send_switch_info(switch_::Switch *a_switch);
   void switch_command(const SwitchCommandRequest &msg) override;
 #endif
 #ifdef USE_TEXT_SENSOR
   bool send_text_sensor_state(text_sensor::TextSensor *text_sensor);
-  void send_text_sensor_info(text_sensor::TextSensor *text_sensor);
 #endif
-#ifdef USE_ESP32_CAMERA
-  void set_camera_state(std::shared_ptr<esp32_camera::CameraImage> image);
-  void send_camera_info(esp32_camera::ESP32Camera *camera);
+#ifdef USE_CAMERA
+  void set_camera_state(std::shared_ptr<camera::CameraImage> image);
   void camera_image(const CameraImageRequest &msg) override;
 #endif
 #ifdef USE_CLIMATE
   bool send_climate_state(climate::Climate *climate);
-  void send_climate_info(climate::Climate *climate);
   void climate_command(const ClimateCommandRequest &msg) override;
 #endif
 #ifdef USE_NUMBER
   bool send_number_state(number::Number *number);
-  void send_number_info(number::Number *number);
   void number_command(const NumberCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_DATE
   bool send_date_state(datetime::DateEntity *date);
-  void send_date_info(datetime::DateEntity *date);
   void date_command(const DateCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_TIME
   bool send_time_state(datetime::TimeEntity *time);
-  void send_time_info(datetime::TimeEntity *time);
   void time_command(const TimeCommandRequest &msg) override;
 #endif
 #ifdef USE_DATETIME_DATETIME
   bool send_datetime_state(datetime::DateTimeEntity *datetime);
-  void send_datetime_info(datetime::DateTimeEntity *datetime);
   void datetime_command(const DateTimeCommandRequest &msg) override;
 #endif
 #ifdef USE_TEXT
   bool send_text_state(text::Text *text);
-  void send_text_info(text::Text *text);
   void text_command(const TextCommandRequest &msg) override;
 #endif
 #ifdef USE_SELECT
   bool send_select_state(select::Select *select);
-  void send_select_info(select::Select *select);
   void select_command(const SelectCommandRequest &msg) override;
 #endif
 #ifdef USE_BUTTON
-  void send_button_info(button::Button *button);
   void button_command(const ButtonCommandRequest &msg) override;
 #endif
 #ifdef USE_LOCK
   bool send_lock_state(lock::Lock *a_lock);
-  void send_lock_info(lock::Lock *a_lock);
   void lock_command(const LockCommandRequest &msg) override;
 #endif
 #ifdef USE_VALVE
   bool send_valve_state(valve::Valve *valve);
-  void send_valve_info(valve::Valve *valve);
   void valve_command(const ValveCommandRequest &msg) override;
 #endif
 #ifdef USE_MEDIA_PLAYER
   bool send_media_player_state(media_player::MediaPlayer *media_player);
-  void send_media_player_info(media_player::MediaPlayer *media_player);
   void media_player_command(const MediaPlayerCommandRequest &msg) override;
 #endif
-  bool try_send_log_message(int level, const char *tag, const char *line);
+  bool try_send_log_message(int level, const char *tag, const char *line, size_t message_len);
   void send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
-    if (!this->service_call_subscription_)
+    if (!this->flags_.service_call_subscription)
       return;
     this->send_message(call);
   }
@@ -167,26 +151,22 @@ class APIConnection : public APIServerConnection {
 
 #ifdef USE_ALARM_CONTROL_PANEL
   bool send_alarm_control_panel_state(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel);
-  void send_alarm_control_panel_info(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel);
   void alarm_control_panel_command(const AlarmControlPanelCommandRequest &msg) override;
 #endif
 
 #ifdef USE_EVENT
   void send_event(event::Event *event, const std::string &event_type);
-  void send_event_info(event::Event *event);
 #endif
 
 #ifdef USE_UPDATE
   bool send_update_state(update::UpdateEntity *update);
-  void send_update_info(update::UpdateEntity *update);
   void update_command(const UpdateCommandRequest &msg) override;
 #endif
 
   void on_disconnect_response(const DisconnectResponse &value) override;
   void on_ping_response(const PingResponse &value) override {
     // we initiated ping
-    this->ping_retries_ = 0;
-    this->sent_ping_ = false;
+    this->flags_.sent_ping = false;
   }
   void on_home_assistant_state_response(const HomeAssistantStateResponse &msg) override;
 #ifdef USE_HOMEASSISTANT_TIME
@@ -199,16 +179,16 @@ class APIConnection : public APIServerConnection {
   DeviceInfoResponse device_info(const DeviceInfoRequest &msg) override;
   void list_entities(const ListEntitiesRequest &msg) override { this->list_entities_iterator_.begin(); }
   void subscribe_states(const SubscribeStatesRequest &msg) override {
-    this->state_subscription_ = true;
+    this->flags_.state_subscription = true;
     this->initial_state_iterator_.begin();
   }
   void subscribe_logs(const SubscribeLogsRequest &msg) override {
-    this->log_subscription_ = msg.level;
+    this->flags_.log_subscription = msg.level;
     if (msg.dump_config)
       App.schedule_dump_config();
   }
   void subscribe_homeassistant_services(const SubscribeHomeassistantServicesRequest &msg) override {
-    this->service_call_subscription_ = true;
+    this->flags_.service_call_subscription = true;
   }
   void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) override;
   GetTimeResponse get_time(const GetTimeRequest &msg) override {
@@ -220,9 +200,12 @@ class APIConnection : public APIServerConnection {
   NoiseEncryptionSetKeyResponse noise_encryption_set_key(const NoiseEncryptionSetKeyRequest &msg) override;
 #endif
 
-  bool is_authenticated() override { return this->connection_state_ == ConnectionState::AUTHENTICATED; }
+  bool is_authenticated() override {
+    return static_cast<ConnectionState>(this->flags_.connection_state) == ConnectionState::AUTHENTICATED;
+  }
   bool is_connection_setup() override {
-    return this->connection_state_ == ConnectionState ::CONNECTED || this->is_authenticated();
+    return static_cast<ConnectionState>(this->flags_.connection_state) == ConnectionState::CONNECTED ||
+           this->is_authenticated();
   }
   void on_fatal_error() override;
   void on_unauthenticated_access() override;
@@ -275,7 +258,13 @@ class APIConnection : public APIServerConnection {
   bool try_to_clear_buffer(bool log_out_of_space);
   bool send_buffer(ProtoWriteBuffer buffer, uint16_t message_type) override;
 
-  std::string get_client_combined_info() const { return this->client_combined_info_; }
+  std::string get_client_combined_info() const {
+    if (this->client_info_ == this->client_peername_) {
+      // Before Hello message, both are the same (just IP:port)
+      return this->client_info_;
+    }
+    return this->client_info_ + " (" + this->client_peername_ + ")";
+  }
 
   // Buffer allocator methods for batch processing
   ProtoWriteBuffer allocate_single_message_buffer(uint16_t size);
@@ -295,17 +284,37 @@ class APIConnection : public APIServerConnection {
     response.icon = entity->get_icon();
     response.disabled_by_default = entity->is_disabled_by_default();
     response.entity_category = static_cast<enums::EntityCategory>(entity->get_entity_category());
+#ifdef USE_DEVICES
+    response.device_id = entity->get_device_id();
+#endif
   }
 
   // Helper function to fill common entity state fields
   static void fill_entity_state_base(esphome::EntityBase *entity, StateResponseProtoMessage &response) {
     response.key = entity->get_object_id_hash();
+#ifdef USE_DEVICES
+    response.device_id = entity->get_device_id();
+#endif
   }
 
   // Non-template helper to encode any ProtoMessage
   static uint16_t encode_message_to_buffer(ProtoMessage &msg, uint16_t message_type, APIConnection *conn,
                                            uint32_t remaining_size, bool is_single);
 
+  // Helper method to process multiple entities from an iterator in a batch
+  template<typename Iterator> void process_iterator_batch_(Iterator &iterator) {
+    size_t initial_size = this->deferred_batch_.size();
+    while (!iterator.completed() && (this->deferred_batch_.size() - initial_size) < MAX_INITIAL_PER_BATCH) {
+      iterator.advance();
+    }
+
+    // If the batch is full, process it immediately
+    // Note: iterator.advance() already calls schedule_batch_() via schedule_message_()
+    if (this->deferred_batch_.size() >= MAX_INITIAL_PER_BATCH) {
+      this->process_batch_();
+    }
+  }
+
 #ifdef USE_BINARY_SENSOR
   static uint16_t try_send_binary_sensor_state(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
                                                bool is_single);
@@ -416,7 +425,7 @@ class APIConnection : public APIServerConnection {
   static uint16_t try_send_update_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
                                        bool is_single);
 #endif
-#ifdef USE_ESP32_CAMERA
+#ifdef USE_CAMERA
   static uint16_t try_send_camera_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
                                        bool is_single);
 #endif
@@ -432,124 +441,82 @@ class APIConnection : public APIServerConnection {
   // Helper function to get estimated message size for buffer pre-allocation
   static uint16_t get_estimated_message_size(uint16_t message_type);
 
-  enum class ConnectionState {
-    WAITING_FOR_HELLO,
-    CONNECTED,
-    AUTHENTICATED,
-  } connection_state_{ConnectionState::WAITING_FOR_HELLO};
+  // Batch message method for ping requests
+  static uint16_t try_send_ping_request(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
+                                        bool is_single);
 
-  bool remove_{false};
+  // === Optimal member ordering for 32-bit systems ===
 
+  // Group 1: Pointers (4 bytes each on 32-bit)
   std::unique_ptr<APIFrameHelper> helper_;
-
-  std::string client_info_;
-  std::string client_peername_;
-  std::string client_combined_info_;
-  uint32_t client_api_version_major_{0};
-  uint32_t client_api_version_minor_{0};
-#ifdef USE_ESP32_CAMERA
-  esp32_camera::CameraImageReader image_reader_;
-#endif
-
-  bool state_subscription_{false};
-  int log_subscription_{ESPHOME_LOG_LEVEL_NONE};
-  uint32_t last_traffic_;
-  uint32_t next_ping_retry_{0};
-  uint8_t ping_retries_{0};
-  bool sent_ping_{false};
-  bool service_call_subscription_{false};
-  bool next_close_ = false;
   APIServer *parent_;
+
+  // Group 2: Larger objects (must be 4-byte aligned)
+  // These contain vectors/pointers internally, so putting them early ensures good alignment
   InitialStateIterator initial_state_iterator_;
   ListEntitiesIterator list_entities_iterator_;
+#ifdef USE_CAMERA
+  std::unique_ptr<camera::CameraImageReader> image_reader_;
+#endif
+
+  // Group 3: Strings (12 bytes each on 32-bit, 4-byte aligned)
+  std::string client_info_;
+  std::string client_peername_;
+
+  // Group 4: 4-byte types
+  uint32_t last_traffic_;
   int state_subs_at_ = -1;
 
   // Function pointer type for message encoding
   using MessageCreatorPtr = uint16_t (*)(EntityBase *, APIConnection *, uint32_t remaining_size, bool is_single);
 
-  // Optimized MessageCreator class using union dispatch
   class MessageCreator {
    public:
-    // Constructor for function pointer (message_type = 0)
-    MessageCreator(MessageCreatorPtr ptr) : message_type_(0) { data_.ptr = ptr; }
+    // Constructor for function pointer
+    MessageCreator(MessageCreatorPtr ptr) { data_.function_ptr = ptr; }
 
     // Constructor for string state capture
-    MessageCreator(const std::string &value, uint16_t msg_type) : message_type_(msg_type) {
-      data_.string_ptr = new std::string(value);
-    }
+    explicit MessageCreator(const std::string &str_value) { data_.string_ptr = new std::string(str_value); }
 
-    // Destructor
-    ~MessageCreator() {
-      // Clean up string data for string-based message types
-      if (uses_string_data_()) {
-        delete data_.string_ptr;
-      }
-    }
+    // No destructor - cleanup must be called explicitly with message_type
 
-    // Copy constructor
-    MessageCreator(const MessageCreator &other) : message_type_(other.message_type_) {
-      if (message_type_ == 0) {
-        data_.ptr = other.data_.ptr;
-      } else if (uses_string_data_()) {
-        data_.string_ptr = new std::string(*other.data_.string_ptr);
-      } else {
-        data_ = other.data_;  // For POD types
-      }
-    }
+    // Delete copy operations - MessageCreator should only be moved
+    MessageCreator(const MessageCreator &other) = delete;
+    MessageCreator &operator=(const MessageCreator &other) = delete;
 
     // Move constructor
-    MessageCreator(MessageCreator &&other) noexcept : data_(other.data_), message_type_(other.message_type_) {
-      other.message_type_ = 0;  // Reset other to function pointer type
-      other.data_.ptr = nullptr;
-    }
-
-    // Assignment operators (needed for batch deduplication)
-    MessageCreator &operator=(const MessageCreator &other) {
-      if (this != &other) {
-        // Clean up current string data if needed
-        if (uses_string_data_()) {
-          delete data_.string_ptr;
-        }
-        // Copy new data
-        message_type_ = other.message_type_;
-        if (other.message_type_ == 0) {
-          data_.ptr = other.data_.ptr;
-        } else if (other.uses_string_data_()) {
-          data_.string_ptr = new std::string(*other.data_.string_ptr);
-        } else {
-          data_ = other.data_;
-        }
-      }
-      return *this;
-    }
+    MessageCreator(MessageCreator &&other) noexcept : data_(other.data_) { other.data_.function_ptr = nullptr; }
 
+    // Move assignment
     MessageCreator &operator=(MessageCreator &&other) noexcept {
       if (this != &other) {
-        // Clean up current string data if needed
-        if (uses_string_data_()) {
-          delete data_.string_ptr;
-        }
-        // Move data
-        message_type_ = other.message_type_;
+        // IMPORTANT: Caller must ensure cleanup() was called if this contains a string!
+        // In our usage, this happens in add_item() deduplication and vector::erase()
         data_ = other.data_;
-        // Reset other to safe state
-        other.message_type_ = 0;
-        other.data_.ptr = nullptr;
+        other.data_.function_ptr = nullptr;
       }
       return *this;
     }
 
-    // Call operator
-    uint16_t operator()(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single) const;
+    // Call operator - uses message_type to determine union type
+    uint16_t operator()(EntityBase *entity, APIConnection *conn, uint32_t remaining_size, bool is_single,
+                        uint16_t message_type) const;
+
+    // Manual cleanup method - must be called before destruction for string types
+    void cleanup(uint16_t message_type) {
+#ifdef USE_EVENT
+      if (message_type == EventResponse::MESSAGE_TYPE && data_.string_ptr != nullptr) {
+        delete data_.string_ptr;
+        data_.string_ptr = nullptr;
+      }
+#endif
+    }
 
    private:
-    // Helper to check if this message type uses heap-allocated strings
-    bool uses_string_data_() const { return message_type_ == EventResponse::MESSAGE_TYPE; }
-    union CreatorData {
-      MessageCreatorPtr ptr;    // 8 bytes
-      std::string *string_ptr;  // 8 bytes
-    } data_;                    // 8 bytes
-    uint16_t message_type_;     // 2 bytes (0 = function ptr, >0 = state capture)
+    union Data {
+      MessageCreatorPtr function_ptr;
+      std::string *string_ptr;
+    } data_;  // 4 bytes on 32-bit, 8 bytes on 64-bit - same as before
   };
 
   // Generic batching mechanism for both state updates and entity info
@@ -566,24 +533,86 @@ class APIConnection : public APIServerConnection {
 
     std::vector<BatchItem> items;
     uint32_t batch_start_time{0};
-    bool batch_scheduled{false};
 
+   private:
+    // Helper to cleanup items from the beginning
+    void cleanup_items_(size_t count) {
+      for (size_t i = 0; i < count; i++) {
+        items[i].creator.cleanup(items[i].message_type);
+      }
+    }
+
+   public:
     DeferredBatch() {
       // Pre-allocate capacity for typical batch sizes to avoid reallocation
       items.reserve(8);
     }
 
+    ~DeferredBatch() {
+      // Ensure cleanup of any remaining items
+      clear();
+    }
+
     // Add item to the batch
     void add_item(EntityBase *entity, MessageCreator creator, uint16_t message_type);
+    // Add item to the front of the batch (for high priority messages like ping)
+    void add_item_front(EntityBase *entity, MessageCreator creator, uint16_t message_type);
+
+    // Clear all items with proper cleanup
     void clear() {
+      cleanup_items_(items.size());
       items.clear();
-      batch_scheduled = false;
       batch_start_time = 0;
     }
+
+    // Remove processed items from the front with proper cleanup
+    void remove_front(size_t count) {
+      cleanup_items_(count);
+      items.erase(items.begin(), items.begin() + count);
+    }
+
     bool empty() const { return items.empty(); }
+    size_t size() const { return items.size(); }
+    const BatchItem &operator[](size_t index) const { return items[index]; }
   };
 
+  // DeferredBatch here (16 bytes, 4-byte aligned)
   DeferredBatch deferred_batch_;
+
+  // ConnectionState enum for type safety
+  enum class ConnectionState : uint8_t {
+    WAITING_FOR_HELLO = 0,
+    CONNECTED = 1,
+    AUTHENTICATED = 2,
+  };
+
+  // Group 5: Pack all small members together to minimize padding
+  // This group starts at a 4-byte boundary after DeferredBatch
+  struct APIFlags {
+    // Connection state only needs 2 bits (3 states)
+    uint8_t connection_state : 2;
+    // Log subscription needs 3 bits (log levels 0-7)
+    uint8_t log_subscription : 3;
+    // Boolean flags (1 bit each)
+    uint8_t remove : 1;
+    uint8_t state_subscription : 1;
+    uint8_t sent_ping : 1;
+
+    uint8_t service_call_subscription : 1;
+    uint8_t next_close : 1;
+    uint8_t batch_scheduled : 1;
+    uint8_t batch_first_message : 1;          // For batch buffer allocation
+    uint8_t should_try_send_immediately : 1;  // True after initial states are sent
+#ifdef HAS_PROTO_MESSAGE_DUMP
+    uint8_t log_only_mode : 1;
+#endif
+  } flags_{};  // 2 bytes total
+
+  // 2-byte types immediately after flags_ (no padding between them)
+  uint16_t client_api_version_major_{0};
+  uint16_t client_api_version_minor_{0};
+  // Total: 2 (flags) + 2 + 2 = 6 bytes, then 2 bytes padding to next 4-byte boundary
+
   uint32_t get_batch_delay_ms_() const;
   // Message will use 8 more bytes than the minimum size, and typical
   // MTU is 1500. Sometimes users will see as low as 1460 MTU.
@@ -600,9 +629,49 @@ class APIConnection : public APIServerConnection {
 
   bool schedule_batch_();
   void process_batch_();
+  void clear_batch_() {
+    this->deferred_batch_.clear();
+    this->flags_.batch_scheduled = false;
+  }
 
-  // State for batch buffer allocation
-  bool batch_first_message_{false};
+#ifdef HAS_PROTO_MESSAGE_DUMP
+  // Helper to log a proto message from a MessageCreator object
+  void log_proto_message_(EntityBase *entity, const MessageCreator &creator, uint16_t message_type) {
+    this->flags_.log_only_mode = true;
+    creator(entity, this, MAX_PACKET_SIZE, true, message_type);
+    this->flags_.log_only_mode = false;
+  }
+
+  void log_batch_item_(const DeferredBatch::BatchItem &item) {
+    // Use the helper to log the message
+    this->log_proto_message_(item.entity, item.creator, item.message_type);
+  }
+#endif
+
+  // Helper method to send a message either immediately or via batching
+  bool send_message_smart_(EntityBase *entity, MessageCreatorPtr creator, uint16_t message_type) {
+    // Try to send immediately if:
+    // 1. We should try to send immediately (should_try_send_immediately = true)
+    // 2. Batch delay is 0 (user has opted in to immediate sending)
+    // 3. Buffer has space available
+    if (this->flags_.should_try_send_immediately && this->get_batch_delay_ms_() == 0 &&
+        this->helper_->can_write_without_blocking()) {
+      // Now actually encode and send
+      if (creator(entity, this, MAX_PACKET_SIZE, true) &&
+          this->send_buffer(ProtoWriteBuffer{&this->parent_->get_shared_buffer_ref()}, message_type)) {
+#ifdef HAS_PROTO_MESSAGE_DUMP
+        // Log the message in verbose mode
+        this->log_proto_message_(entity, MessageCreator(creator), message_type);
+#endif
+        return true;
+      }
+
+      // If immediate send failed, fall through to batching
+    }
+
+    // Fall back to scheduled batching
+    return this->schedule_message_(entity, creator, message_type);
+  }
 
   // Helper function to schedule a deferred message with known message type
   bool schedule_message_(EntityBase *entity, MessageCreator creator, uint16_t message_type) {
@@ -614,6 +683,12 @@ class APIConnection : public APIServerConnection {
   bool schedule_message_(EntityBase *entity, MessageCreatorPtr function_ptr, uint16_t message_type) {
     return schedule_message_(entity, MessageCreator(function_ptr), message_type);
   }
+
+  // Helper function to schedule a high priority message at the front of the batch
+  bool schedule_message_front_(EntityBase *entity, MessageCreatorPtr function_ptr, uint16_t message_type) {
+    this->deferred_batch_.add_item_front(entity, MessageCreator(function_ptr), message_type);
+    return this->schedule_batch_();
+  }
 };
 
 }  // namespace api

esphome/components/api/api_frame_helper.cpp

@@ -66,6 +66,17 @@ const char *api_error_to_str(APIError err) {
   return "UNKNOWN";
 }
 
+// Default implementation for loop - handles sending buffered data
+APIError APIFrameHelper::loop() {
+  if (!this->tx_buf_.empty()) {
+    APIError err = try_send_tx_buf_();
+    if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
+      return err;
+    }
+  }
+  return APIError::OK;  // Convert WOULD_BLOCK to OK to avoid connection termination
+}
+
 // Helper method to buffer data from IOVs
 void APIFrameHelper::buffer_data_from_iov_(const struct iovec *iov, int iovcnt, uint16_t total_write_len) {
   SendBuffer buffer;
@@ -214,6 +225,22 @@ APIError APIFrameHelper::init_common_() {
 }
 
 #define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->info_.c_str(), ##__VA_ARGS__)
+
+APIError APIFrameHelper::handle_socket_read_result_(ssize_t received) {
+  if (received == -1) {
+    if (errno == EWOULDBLOCK || errno == EAGAIN) {
+      return APIError::WOULD_BLOCK;
+    }
+    state_ = State::FAILED;
+    HELPER_LOG("Socket read failed with errno %d", errno);
+    return APIError::SOCKET_READ_FAILED;
+  } else if (received == 0) {
+    state_ = State::FAILED;
+    HELPER_LOG("Connection closed");
+    return APIError::CONNECTION_CLOSED;
+  }
+  return APIError::OK;
+}
 // uncomment to log raw packets
 //#define HELPER_LOG_PACKETS
 
@@ -274,17 +301,21 @@ APIError APINoiseFrameHelper::init() {
 }
 /// Run through handshake messages (if in that phase)
 APIError APINoiseFrameHelper::loop() {
-  APIError err = state_action_();
-  if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
-    return err;
-  }
-  if (!this->tx_buf_.empty()) {
-    err = try_send_tx_buf_();
+  // During handshake phase, process as many actions as possible until we can't progress
+  // socket_->ready() stays true until next main loop, but state_action() will return
+  // WOULD_BLOCK when no more data is available to read
+  while (state_ != State::DATA && this->socket_->ready()) {
+    APIError err = state_action_();
     if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
       return err;
     }
+    if (err == APIError::WOULD_BLOCK) {
+      break;
+    }
   }
-  return APIError::OK;  // Convert WOULD_BLOCK to OK to avoid connection termination
+
+  // Use base class implementation for buffer sending
+  return APIFrameHelper::loop();
 }
 
 /** Read a packet into the rx_buf_. If successful, stores frame data in the frame parameter
@@ -312,17 +343,9 @@ APIError APINoiseFrameHelper::try_read_frame_(ParsedFrame *frame) {
     // no header information yet
     uint8_t to_read = 3 - rx_header_buf_len_;
     ssize_t received = this->socket_->read(&rx_header_buf_[rx_header_buf_len_], to_read);
-    if (received == -1) {
-      if (errno == EWOULDBLOCK || errno == EAGAIN) {
-        return APIError::WOULD_BLOCK;
-      }
-      state_ = State::FAILED;
-      HELPER_LOG("Socket read failed with errno %d", errno);
-      return APIError::SOCKET_READ_FAILED;
-    } else if (received == 0) {
-      state_ = State::FAILED;
-      HELPER_LOG("Connection closed");
-      return APIError::CONNECTION_CLOSED;
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
     }
     rx_header_buf_len_ += static_cast<uint8_t>(received);
     if (static_cast<uint8_t>(received) != to_read) {
@@ -330,17 +353,15 @@ APIError APINoiseFrameHelper::try_read_frame_(ParsedFrame *frame) {
       return APIError::WOULD_BLOCK;
     }
 
+    if (rx_header_buf_[0] != 0x01) {
+      state_ = State::FAILED;
+      HELPER_LOG("Bad indicator byte %u", rx_header_buf_[0]);
+      return APIError::BAD_INDICATOR;
+    }
     // header reading done
   }
 
   // read body
-  uint8_t indicator = rx_header_buf_[0];
-  if (indicator != 0x01) {
-    state_ = State::FAILED;
-    HELPER_LOG("Bad indicator byte %u", indicator);
-    return APIError::BAD_INDICATOR;
-  }
-
   uint16_t msg_size = (((uint16_t) rx_header_buf_[1]) << 8) | rx_header_buf_[2];
 
   if (state_ != State::DATA && msg_size > 128) {
@@ -359,17 +380,9 @@ APIError APINoiseFrameHelper::try_read_frame_(ParsedFrame *frame) {
     // more data to read
     uint16_t to_read = msg_size - rx_buf_len_;
     ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
-    if (received == -1) {
-      if (errno == EWOULDBLOCK || errno == EAGAIN) {
-        return APIError::WOULD_BLOCK;
-      }
-      state_ = State::FAILED;
-      HELPER_LOG("Socket read failed with errno %d", errno);
-      return APIError::SOCKET_READ_FAILED;
-    } else if (received == 0) {
-      state_ = State::FAILED;
-      HELPER_LOG("Connection closed");
-      return APIError::CONNECTION_CLOSED;
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
     }
     rx_buf_len_ += static_cast<uint16_t>(received);
     if (static_cast<uint16_t>(received) != to_read) {
@@ -586,10 +599,6 @@ APIError APINoiseFrameHelper::read_packet(ReadPacketBuffer *buffer) {
     return APIError::BAD_DATA_PACKET;
   }
 
-  // uint16_t type;
-  // uint16_t data_len;
-  // uint8_t *data;
-  // uint8_t *padding;  zero or more bytes to fill up the rest of the packet
   uint16_t type = (((uint16_t) msg_data[0]) << 8) | msg_data[1];
   uint16_t data_len = (((uint16_t) msg_data[2]) << 8) | msg_data[3];
   if (data_len > msg_size - 4) {
@@ -605,20 +614,14 @@ APIError APINoiseFrameHelper::read_packet(ReadPacketBuffer *buffer) {
   return APIError::OK;
 }
 APIError APINoiseFrameHelper::write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) {
-  std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
-  uint16_t payload_len = static_cast<uint16_t>(raw_buffer->size() - frame_header_padding_);
-
   // Resize to include MAC space (required for Noise encryption)
-  raw_buffer->resize(raw_buffer->size() + frame_footer_size_);
-
-  // Use write_protobuf_packets with a single packet
-  std::vector<PacketInfo> packets;
-  packets.emplace_back(type, 0, payload_len);
-
-  return write_protobuf_packets(buffer, packets);
+  buffer.get_buffer()->resize(buffer.get_buffer()->size() + frame_footer_size_);
+  PacketInfo packet{type, 0,
+                    static_cast<uint16_t>(buffer.get_buffer()->size() - frame_header_padding_ - frame_footer_size_)};
+  return write_protobuf_packets(buffer, std::span<const PacketInfo>(&packet, 1));
 }
 
-APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, const std::vector<PacketInfo> &packets) {
+APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) {
   APIError aerr = state_action_();
   if (aerr != APIError::OK) {
     return aerr;
@@ -633,18 +636,15 @@ APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, co
   }
 
   std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
+  uint8_t *buffer_data = raw_buffer->data();  // Cache buffer pointer
+
   this->reusable_iovs_.clear();
   this->reusable_iovs_.reserve(packets.size());
 
   // We need to encrypt each packet in place
   for (const auto &packet : packets) {
-    uint16_t type = packet.message_type;
-    uint16_t offset = packet.offset;
-    uint16_t payload_len = packet.payload_size;
-    uint16_t msg_len = 4 + payload_len;  // type(2) + data_len(2) + payload
-
     // The buffer already has padding at offset
-    uint8_t *buf_start = raw_buffer->data() + offset;
+    uint8_t *buf_start = buffer_data + packet.offset;
 
     // Write noise header
     buf_start[0] = 0x01;  // indicator
@@ -652,10 +652,10 @@ APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, co
 
     // Write message header (to be encrypted)
     const uint8_t msg_offset = 3;
-    buf_start[msg_offset + 0] = (uint8_t) (type >> 8);         // type high byte
-    buf_start[msg_offset + 1] = (uint8_t) type;                // type low byte
-    buf_start[msg_offset + 2] = (uint8_t) (payload_len >> 8);  // data_len high byte
-    buf_start[msg_offset + 3] = (uint8_t) payload_len;         // data_len low byte
+    buf_start[msg_offset] = static_cast<uint8_t>(packet.message_type >> 8);      // type high byte
+    buf_start[msg_offset + 1] = static_cast<uint8_t>(packet.message_type);       // type low byte
+    buf_start[msg_offset + 2] = static_cast<uint8_t>(packet.payload_size >> 8);  // data_len high byte
+    buf_start[msg_offset + 3] = static_cast<uint8_t>(packet.payload_size);       // data_len low byte
     // payload data is already in the buffer starting at offset + 7
 
     // Make sure we have space for MAC
@@ -664,7 +664,8 @@ APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, co
     // Encrypt the message in place
     NoiseBuffer mbuf;
     noise_buffer_init(mbuf);
-    noise_buffer_set_inout(mbuf, buf_start + msg_offset, msg_len, msg_len + frame_footer_size_);
+    noise_buffer_set_inout(mbuf, buf_start + msg_offset, 4 + packet.payload_size,
+                           4 + packet.payload_size + frame_footer_size_);
 
     int err = noise_cipherstate_encrypt(send_cipher_, &mbuf);
     if (err != 0) {
@@ -674,14 +675,12 @@ APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, co
     }
 
     // Fill in the encrypted size
-    buf_start[1] = (uint8_t) (mbuf.size >> 8);
-    buf_start[2] = (uint8_t) mbuf.size;
+    buf_start[1] = static_cast<uint8_t>(mbuf.size >> 8);
+    buf_start[2] = static_cast<uint8_t>(mbuf.size);
 
     // Add iovec for this encrypted packet
-    struct iovec iov;
-    iov.iov_base = buf_start;
-    iov.iov_len = 3 + mbuf.size;  // indicator + size + encrypted data
-    this->reusable_iovs_.push_back(iov);
+    this->reusable_iovs_.push_back(
+        {buf_start, static_cast<size_t>(3 + mbuf.size)});  // indicator + size + encrypted data
   }
 
   // Send all encrypted packets in one writev call
@@ -822,18 +821,12 @@ APIError APIPlaintextFrameHelper::init() {
   state_ = State::DATA;
   return APIError::OK;
 }
-/// Not used for plaintext
 APIError APIPlaintextFrameHelper::loop() {
   if (state_ != State::DATA) {
     return APIError::BAD_STATE;
   }
-  if (!this->tx_buf_.empty()) {
-    APIError err = try_send_tx_buf_();
-    if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
-      return err;
-    }
-  }
-  return APIError::OK;  // Convert WOULD_BLOCK to OK to avoid connection termination
+  // Use base class implementation for buffer sending
+  return APIFrameHelper::loop();
 }
 
 /** Read a packet into the rx_buf_. If successful, stores frame data in the frame parameter
@@ -862,17 +855,9 @@ APIError APIPlaintextFrameHelper::try_read_frame_(ParsedFrame *frame) {
     // Try to get to at least 3 bytes total (indicator + 2 varint bytes), then read one byte at a time
     ssize_t received =
         this->socket_->read(&rx_header_buf_[rx_header_buf_pos_], rx_header_buf_pos_ < 3 ? 3 - rx_header_buf_pos_ : 1);
-    if (received == -1) {
-      if (errno == EWOULDBLOCK || errno == EAGAIN) {
-        return APIError::WOULD_BLOCK;
-      }
-      state_ = State::FAILED;
-      HELPER_LOG("Socket read failed with errno %d", errno);
-      return APIError::SOCKET_READ_FAILED;
-    } else if (received == 0) {
-      state_ = State::FAILED;
-      HELPER_LOG("Connection closed");
-      return APIError::CONNECTION_CLOSED;
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
     }
 
     // If this was the first read, validate the indicator byte
@@ -956,17 +941,9 @@ APIError APIPlaintextFrameHelper::try_read_frame_(ParsedFrame *frame) {
     // more data to read
     uint16_t to_read = rx_header_parsed_len_ - rx_buf_len_;
     ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
-    if (received == -1) {
-      if (errno == EWOULDBLOCK || errno == EAGAIN) {
-        return APIError::WOULD_BLOCK;
-      }
-      state_ = State::FAILED;
-      HELPER_LOG("Socket read failed with errno %d", errno);
-      return APIError::SOCKET_READ_FAILED;
-    } else if (received == 0) {
-      state_ = State::FAILED;
-      HELPER_LOG("Connection closed");
-      return APIError::CONNECTION_CLOSED;
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
     }
     rx_buf_len_ += static_cast<uint16_t>(received);
     if (static_cast<uint16_t>(received) != to_read) {
@@ -1026,18 +1003,11 @@ APIError APIPlaintextFrameHelper::read_packet(ReadPacketBuffer *buffer) {
   return APIError::OK;
 }
 APIError APIPlaintextFrameHelper::write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) {
-  std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
-  uint16_t payload_len = static_cast<uint16_t>(raw_buffer->size() - frame_header_padding_);
-
-  // Use write_protobuf_packets with a single packet
-  std::vector<PacketInfo> packets;
-  packets.emplace_back(type, 0, payload_len);
-
-  return write_protobuf_packets(buffer, packets);
+  PacketInfo packet{type, 0, static_cast<uint16_t>(buffer.get_buffer()->size() - frame_header_padding_)};
+  return write_protobuf_packets(buffer, std::span<const PacketInfo>(&packet, 1));
 }
 
-APIError APIPlaintextFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer,
-                                                         const std::vector<PacketInfo> &packets) {
+APIError APIPlaintextFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) {
   if (state_ != State::DATA) {
     return APIError::BAD_STATE;
   }
@@ -1047,17 +1017,15 @@ APIError APIPlaintextFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer
   }
 
   std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
+  uint8_t *buffer_data = raw_buffer->data();  // Cache buffer pointer
+
   this->reusable_iovs_.clear();
   this->reusable_iovs_.reserve(packets.size());
 
   for (const auto &packet : packets) {
-    uint16_t type = packet.message_type;
-    uint16_t offset = packet.offset;
-    uint16_t payload_len = packet.payload_size;
-
     // Calculate varint sizes for header layout
-    uint8_t size_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(payload_len));
-    uint8_t type_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(type));
+    uint8_t size_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(packet.payload_size));
+    uint8_t type_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(packet.message_type));
     uint8_t total_header_len = 1 + size_varint_len + type_varint_len;
 
     // Calculate where to start writing the header
@@ -1085,23 +1053,20 @@ APIError APIPlaintextFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer
     //
     // The message starts at offset + frame_header_padding_
     // So we write the header starting at offset + frame_header_padding_ - total_header_len
-    uint8_t *buf_start = raw_buffer->data() + offset;
+    uint8_t *buf_start = buffer_data + packet.offset;
     uint32_t header_offset = frame_header_padding_ - total_header_len;
 
     // Write the plaintext header
     buf_start[header_offset] = 0x00;  // indicator
 
-    // Encode size varint directly into buffer
-    ProtoVarInt(payload_len).encode_to_buffer_unchecked(buf_start + header_offset + 1, size_varint_len);
-
-    // Encode type varint directly into buffer
-    ProtoVarInt(type).encode_to_buffer_unchecked(buf_start + header_offset + 1 + size_varint_len, type_varint_len);
+    // Encode varints directly into buffer
+    ProtoVarInt(packet.payload_size).encode_to_buffer_unchecked(buf_start + header_offset + 1, size_varint_len);
+    ProtoVarInt(packet.message_type)
+        .encode_to_buffer_unchecked(buf_start + header_offset + 1 + size_varint_len, type_varint_len);
 
     // Add iovec for this packet (header + payload)
-    struct iovec iov;
-    iov.iov_base = buf_start + header_offset;
-    iov.iov_len = total_header_len + payload_len;
-    this->reusable_iovs_.push_back(iov);
+    this->reusable_iovs_.push_back(
+        {buf_start + header_offset, static_cast<size_t>(total_header_len + packet.payload_size)});
   }
 
   // Send all packets in one writev call

esphome/components/api/api_frame_helper.h

@@ -2,6 +2,7 @@
 #include <cstdint>
 #include <deque>
 #include <limits>
+#include <span>
 #include <utility>
 #include <vector>
 
@@ -38,7 +39,7 @@ struct PacketInfo {
       : message_type(type), offset(off), payload_size(size), padding(0) {}
 };
 
-enum class APIError : int {
+enum class APIError : uint16_t {
   OK = 0,
   WOULD_BLOCK = 1001,
   BAD_HANDSHAKE_PACKET_LEN = 1002,
@@ -74,7 +75,7 @@ class APIFrameHelper {
   }
   virtual ~APIFrameHelper() = default;
   virtual APIError init() = 0;
-  virtual APIError loop() = 0;
+  virtual APIError loop();
   virtual APIError read_packet(ReadPacketBuffer *buffer) = 0;
   bool can_write_without_blocking() { return state_ == State::DATA && tx_buf_.empty(); }
   std::string getpeername() { return socket_->getpeername(); }
@@ -101,7 +102,7 @@ class APIFrameHelper {
   // Write multiple protobuf packets in a single operation
   // packets contains (message_type, offset, length) for each message in the buffer
   // The buffer contains all messages with appropriate padding before each
-  virtual APIError write_protobuf_packets(ProtoWriteBuffer buffer, const std::vector<PacketInfo> &packets) = 0;
+  virtual APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) = 0;
   // Get the frame header padding required by this protocol
   virtual uint8_t frame_header_padding() = 0;
   // Get the frame footer size required by this protocol
@@ -125,38 +126,6 @@ class APIFrameHelper {
     const uint8_t *current_data() const { return data.data() + offset; }
   };
 
-  // Queue of data buffers to be sent
-  std::deque<SendBuffer> tx_buf_;
-
-  // Common state enum for all frame helpers
-  // Note: Not all states are used by all implementations
-  // - INITIALIZE: Used by both Noise and Plaintext
-  // - CLIENT_HELLO, SERVER_HELLO, HANDSHAKE: Only used by Noise protocol
-  // - DATA: Used by both Noise and Plaintext
-  // - CLOSED: Used by both Noise and Plaintext
-  // - FAILED: Used by both Noise and Plaintext
-  // - EXPLICIT_REJECT: Only used by Noise protocol
-  enum class State {
-    INITIALIZE = 1,
-    CLIENT_HELLO = 2,  // Noise only
-    SERVER_HELLO = 3,  // Noise only
-    HANDSHAKE = 4,     // Noise only
-    DATA = 5,
-    CLOSED = 6,
-    FAILED = 7,
-    EXPLICIT_REJECT = 8,  // Noise only
-  };
-
-  // Current state of the frame helper
-  State state_{State::INITIALIZE};
-
-  // Helper name for logging
-  std::string info_;
-
-  // Socket for communication
-  socket::Socket *socket_{nullptr};
-  std::unique_ptr<socket::Socket> socket_owned_;
-
   // Common implementation for writing raw data to socket
   APIError write_raw_(const struct iovec *iov, int iovcnt);
 
@@ -169,18 +138,47 @@ class APIFrameHelper {
   APIError write_raw_(const struct iovec *iov, int iovcnt, socket::Socket *socket, std::vector<uint8_t> &tx_buf,
                       const std::string &info, StateEnum &state, StateEnum failed_state);
 
+  // Pointers first (4 bytes each)
+  socket::Socket *socket_{nullptr};
+  std::unique_ptr<socket::Socket> socket_owned_;
+
+  // Common state enum for all frame helpers
+  // Note: Not all states are used by all implementations
+  // - INITIALIZE: Used by both Noise and Plaintext
+  // - CLIENT_HELLO, SERVER_HELLO, HANDSHAKE: Only used by Noise protocol
+  // - DATA: Used by both Noise and Plaintext
+  // - CLOSED: Used by both Noise and Plaintext
+  // - FAILED: Used by both Noise and Plaintext
+  // - EXPLICIT_REJECT: Only used by Noise protocol
+  enum class State : uint8_t {
+    INITIALIZE = 1,
+    CLIENT_HELLO = 2,  // Noise only
+    SERVER_HELLO = 3,  // Noise only
+    HANDSHAKE = 4,     // Noise only
+    DATA = 5,
+    CLOSED = 6,
+    FAILED = 7,
+    EXPLICIT_REJECT = 8,  // Noise only
+  };
+
+  // Containers (size varies, but typically 12+ bytes on 32-bit)
+  std::deque<SendBuffer> tx_buf_;
+  std::string info_;
+  std::vector<struct iovec> reusable_iovs_;
+  std::vector<uint8_t> rx_buf_;
+
+  // Group smaller types together
+  uint16_t rx_buf_len_ = 0;
+  State state_{State::INITIALIZE};
   uint8_t frame_header_padding_{0};
   uint8_t frame_footer_size_{0};
-
-  // Reusable IOV array for write_protobuf_packets to avoid repeated allocations
-  std::vector<struct iovec> reusable_iovs_;
-
-  // Receive buffer for reading frame data
-  std::vector<uint8_t> rx_buf_;
-  uint16_t rx_buf_len_ = 0;
+  // 5 bytes total, 3 bytes padding
 
   // Common initialization for both plaintext and noise protocols
   APIError init_common_();
+
+  // Helper method to handle socket read results
+  APIError handle_socket_read_result_(ssize_t received);
 };
 
 #ifdef USE_API_NOISE
@@ -200,7 +198,7 @@ class APINoiseFrameHelper : public APIFrameHelper {
   APIError loop() override;
   APIError read_packet(ReadPacketBuffer *buffer) override;
   APIError write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) override;
-  APIError write_protobuf_packets(ProtoWriteBuffer buffer, const std::vector<PacketInfo> &packets) override;
+  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
   // Get the frame header padding required by this protocol
   uint8_t frame_header_padding() override { return frame_header_padding_; }
   // Get the frame footer size required by this protocol
@@ -213,19 +211,28 @@ class APINoiseFrameHelper : public APIFrameHelper {
   APIError init_handshake_();
   APIError check_handshake_finished_();
   void send_explicit_handshake_reject_(const std::string &reason);
+
+  // Pointers first (4 bytes each)
+  NoiseHandshakeState *handshake_{nullptr};
+  NoiseCipherState *send_cipher_{nullptr};
+  NoiseCipherState *recv_cipher_{nullptr};
+
+  // Shared pointer (8 bytes on 32-bit = 4 bytes control block pointer + 4 bytes object pointer)
+  std::shared_ptr<APINoiseContext> ctx_;
+
+  // Vector (12 bytes on 32-bit)
+  std::vector<uint8_t> prologue_;
+
+  // NoiseProtocolId (size depends on implementation)
+  NoiseProtocolId nid_;
+
+  // Group small types together
   // Fixed-size header buffer for noise protocol:
   // 1 byte for indicator + 2 bytes for message size (16-bit value, not varint)
   // Note: Maximum message size is UINT16_MAX (65535), with a limit of 128 bytes during handshake phase
   uint8_t rx_header_buf_[3];
   uint8_t rx_header_buf_len_ = 0;
-
-  std::vector<uint8_t> prologue_;
-
-  std::shared_ptr<APINoiseContext> ctx_;
-  NoiseHandshakeState *handshake_{nullptr};
-  NoiseCipherState *send_cipher_{nullptr};
-  NoiseCipherState *recv_cipher_{nullptr};
-  NoiseProtocolId nid_;
+  // 4 bytes total, no padding
 };
 #endif  // USE_API_NOISE
 
@@ -245,13 +252,19 @@ class APIPlaintextFrameHelper : public APIFrameHelper {
   APIError loop() override;
   APIError read_packet(ReadPacketBuffer *buffer) override;
   APIError write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) override;
-  APIError write_protobuf_packets(ProtoWriteBuffer buffer, const std::vector<PacketInfo> &packets) override;
+  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
   uint8_t frame_header_padding() override { return frame_header_padding_; }
   // Get the frame footer size required by this protocol
   uint8_t frame_footer_size() override { return frame_footer_size_; }
 
  protected:
   APIError try_read_frame_(ParsedFrame *frame);
+
+  // Group 2-byte aligned types
+  uint16_t rx_header_parsed_type_ = 0;
+  uint16_t rx_header_parsed_len_ = 0;
+
+  // Group 1-byte types together
   // Fixed-size header buffer for plaintext protocol:
   // We now store the indicator byte + the two varints.
   // To match noise protocol's maximum message size (UINT16_MAX = 65535), we need:
@@ -263,8 +276,7 @@ class APIPlaintextFrameHelper : public APIFrameHelper {
   uint8_t rx_header_buf_[6];  // 1 byte indicator + 5 bytes for varints (3 for size + 2 for type)
   uint8_t rx_header_buf_pos_ = 0;
   bool rx_header_parsed_ = false;
-  uint16_t rx_header_parsed_type_ = 0;
-  uint16_t rx_header_parsed_len_ = 0;
+  // 8 bytes total, no padding needed
 };
 #endif
 

esphome/components/api/api_pb2_service.h

@@ -2,9 +2,10 @@
 // See script/api_protobuf/api_protobuf.py
 #pragma once
 
-#include "api_pb2.h"
 #include "esphome/core/defines.h"
 
+#include "api_pb2.h"
+
 namespace esphome {
 namespace api {
 
@@ -19,7 +20,7 @@ class APIServerConnectionBase : public ProtoService {
 
   template<typename T> bool send_message(const T &msg) {
 #ifdef HAS_PROTO_MESSAGE_DUMP
-    this->log_send_message_(T::message_name(), msg.dump());
+    this->log_send_message_(msg.message_name(), msg.dump());
 #endif
     return this->send_message_(msg, T::MESSAGE_TYPE);
   }
@@ -70,7 +71,7 @@ class APIServerConnectionBase : public ProtoService {
 
   virtual void on_execute_service_request(const ExecuteServiceRequest &value){};
 
-#ifdef USE_ESP32_CAMERA
+#ifdef USE_CAMERA
   virtual void on_camera_image_request(const CameraImageRequest &value){};
 #endif
 
@@ -199,7 +200,7 @@ class APIServerConnectionBase : public ProtoService {
   virtual void on_update_command_request(const UpdateCommandRequest &value){};
 #endif
  protected:
-  bool read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) override;
+  void read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) override;
 };
 
 class APIServerConnection : public APIServerConnectionBase {
@@ -222,7 +223,7 @@ class APIServerConnection : public APIServerConnectionBase {
 #ifdef USE_BUTTON
   virtual void button_command(const ButtonCommandRequest &msg) = 0;
 #endif
-#ifdef USE_ESP32_CAMERA
+#ifdef USE_CAMERA
   virtual void camera_image(const CameraImageRequest &msg) = 0;
 #endif
 #ifdef USE_CLIMATE
@@ -339,7 +340,7 @@ class APIServerConnection : public APIServerConnectionBase {
 #ifdef USE_BUTTON
   void on_button_command_request(const ButtonCommandRequest &msg) override;
 #endif
-#ifdef USE_ESP32_CAMERA
+#ifdef USE_CAMERA
   void on_camera_image_request(const CameraImageRequest &msg) override;
 #endif
 #ifdef USE_CLIMATE

esphome/components/api/api_pb2_size.h

@@ -316,15 +316,13 @@ class ProtoSize {
   /**
    * @brief Calculates and adds the size of a nested message field to the total message size
    *
-   * This templated version directly takes a message object, calculates its size internally,
+   * This version takes a ProtoMessage object, calculates its size internally,
    * and updates the total_size reference. This eliminates the need for a temporary variable
    * at the call site.
    *
-   * @tparam MessageType The type of the nested message (inferred from parameter)
    * @param message The nested message object
    */
-  template<typename MessageType>
-  static inline void add_message_object(uint32_t &total_size, uint32_t field_id_size, const MessageType &message,
+  static inline void add_message_object(uint32_t &total_size, uint32_t field_id_size, const ProtoMessage &message,
                                         bool force = false) {
     uint32_t nested_size = 0;
     message.calculate_size(nested_size);

esphome/components/api/api_server.cpp

@@ -24,6 +24,14 @@ static const char *const TAG = "api";
 // APIServer
 APIServer *global_api_server = nullptr;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
+#ifndef USE_API_YAML_SERVICES
+// Global empty vector to avoid guard variables (saves 8 bytes)
+// This is initialized at program startup before any threads
+static const std::vector<UserServiceDescriptor *> empty_user_services{};
+
+const std::vector<UserServiceDescriptor *> &get_empty_user_services_instance() { return empty_user_services; }
+#endif
+
 APIServer::APIServer() {
   global_api_server = this;
   // Pre-allocate shared write buffer
@@ -47,6 +55,11 @@ void APIServer::setup() {
   }
 #endif
 
+  // Schedule reboot if no clients connect within timeout
+  if (this->reboot_timeout_ != 0) {
+    this->schedule_reboot_timeout_();
+  }
+
   this->socket_ = socket::socket_ip_loop_monitored(SOCK_STREAM, 0);  // monitored for incoming connections
   if (this->socket_ == nullptr) {
     ESP_LOGW(TAG, "Could not create socket");
@@ -91,34 +104,42 @@ void APIServer::setup() {
 
 #ifdef USE_LOGGER
   if (logger::global_logger != nullptr) {
-    logger::global_logger->add_on_log_callback([this](int level, const char *tag, const char *message) {
-      if (this->shutting_down_) {
-        // Don't try to send logs during shutdown
-        // as it could result in a recursion and
-        // we would be filling a buffer we are trying to clear
-        return;
-      }
-      for (auto &c : this->clients_) {
-        if (!c->remove_)
-          c->try_send_log_message(level, tag, message);
-      }
-    });
-  }
-#endif
-
-  this->last_connected_ = millis();
-
-#ifdef USE_ESP32_CAMERA
-  if (esp32_camera::global_esp32_camera != nullptr && !esp32_camera::global_esp32_camera->is_internal()) {
-    esp32_camera::global_esp32_camera->add_image_callback(
-        [this](const std::shared_ptr<esp32_camera::CameraImage> &image) {
+    logger::global_logger->add_on_log_callback(
+        [this](int level, const char *tag, const char *message, size_t message_len) {
+          if (this->shutting_down_) {
+            // Don't try to send logs during shutdown
+            // as it could result in a recursion and
+            // we would be filling a buffer we are trying to clear
+            return;
+          }
           for (auto &c : this->clients_) {
-            if (!c->remove_)
-              c->set_camera_state(image);
+            if (!c->flags_.remove)
+              c->try_send_log_message(level, tag, message, message_len);
           }
         });
   }
 #endif
+
+#ifdef USE_CAMERA
+  if (camera::Camera::instance() != nullptr && !camera::Camera::instance()->is_internal()) {
+    camera::Camera::instance()->add_image_callback([this](const std::shared_ptr<camera::CameraImage> &image) {
+      for (auto &c : this->clients_) {
+        if (!c->flags_.remove)
+          c->set_camera_state(image);
+      }
+    });
+  }
+#endif
+}
+
+void APIServer::schedule_reboot_timeout_() {
+  this->status_set_warning();
+  this->set_timeout("api_reboot", this->reboot_timeout_, []() {
+    if (!global_api_server->is_connected()) {
+      ESP_LOGE(TAG, "No clients; rebooting");
+      App.reboot();
+    }
+  });
 }
 
 void APIServer::loop() {
@@ -130,51 +151,63 @@ void APIServer::loop() {
       auto sock = this->socket_->accept_loop_monitored((struct sockaddr *) &source_addr, &addr_len);
       if (!sock)
         break;
-      ESP_LOGD(TAG, "Accepted %s", sock->getpeername().c_str());
+      ESP_LOGD(TAG, "Accept %s", sock->getpeername().c_str());
 
       auto *conn = new APIConnection(std::move(sock), this);
       this->clients_.emplace_back(conn);
       conn->start();
+
+      // Clear warning status and cancel reboot when first client connects
+      if (this->clients_.size() == 1 && this->reboot_timeout_ != 0) {
+        this->status_clear_warning();
+        this->cancel_timeout("api_reboot");
+      }
     }
   }
 
+  if (this->clients_.empty()) {
+    return;
+  }
+
   // Process clients and remove disconnected ones in a single pass
-  if (!this->clients_.empty()) {
-    size_t client_index = 0;
-    while (client_index < this->clients_.size()) {
-      auto &client = this->clients_[client_index];
-
-      if (client->remove_) {
-        // Handle disconnection
-        this->client_disconnected_trigger_->trigger(client->client_info_, client->client_peername_);
-        ESP_LOGV(TAG, "Removing connection to %s", client->client_info_.c_str());
-
-        // Swap with the last element and pop (avoids expensive vector shifts)
-        if (client_index < this->clients_.size() - 1) {
-          std::swap(this->clients_[client_index], this->clients_.back());
-        }
-        this->clients_.pop_back();
-        // Don't increment client_index since we need to process the swapped element
-      } else {
-        // Process active client
-        client->loop();
-        client_index++;  // Move to next client
-      }
+  // Check network connectivity once for all clients
+  if (!network::is_connected()) {
+    // Network is down - disconnect all clients
+    for (auto &client : this->clients_) {
+      client->on_fatal_error();
+      ESP_LOGW(TAG, "%s: Network down; disconnect", client->get_client_combined_info().c_str());
     }
+    // Continue to process and clean up the clients below
   }
 
-  if (this->reboot_timeout_ != 0) {
-    const uint32_t now = millis();
-    if (!this->is_connected()) {
-      if (now - this->last_connected_ > this->reboot_timeout_) {
-        ESP_LOGE(TAG, "No client connected; rebooting");
-        App.reboot();
-      }
-      this->status_set_warning();
-    } else {
-      this->last_connected_ = now;
-      this->status_clear_warning();
+  size_t client_index = 0;
+  while (client_index < this->clients_.size()) {
+    auto &client = this->clients_[client_index];
+
+    if (!client->flags_.remove) {
+      // Common case: process active client
+      client->loop();
+      client_index++;
+      continue;
     }
+
+    // Rare case: handle disconnection
+#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
+    this->client_disconnected_trigger_->trigger(client->client_info_, client->client_peername_);
+#endif
+    ESP_LOGV(TAG, "Remove connection %s", client->client_info_.c_str());
+
+    // Swap with the last element and pop (avoids expensive vector shifts)
+    if (client_index < this->clients_.size() - 1) {
+      std::swap(this->clients_[client_index], this->clients_.back());
+    }
+    this->clients_.pop_back();
+
+    // Schedule reboot when last client disconnects
+    if (this->clients_.empty() && this->reboot_timeout_ != 0) {
+      this->schedule_reboot_timeout_();
+    }
+    // Don't increment client_index since we need to process the swapped element
   }
 }
 
@@ -193,6 +226,7 @@ void APIServer::dump_config() {
 #endif
 }
 
+#ifdef USE_API_PASSWORD
 bool APIServer::uses_password() const { return !this->password_.empty(); }
 
 bool APIServer::check_password(const std::string &password) const {
@@ -223,192 +257,123 @@ bool APIServer::check_password(const std::string &password) const {
 
   return result == 0;
 }
+#endif
 
 void APIServer::handle_disconnect(APIConnection *conn) {}
 
+// Macro for entities without extra parameters
+#define API_DISPATCH_UPDATE(entity_type, entity_name) \
+  void APIServer::on_##entity_name##_update(entity_type *obj) { \
+    if (obj->is_internal()) \
+      return; \
+    for (auto &c : this->clients_) \
+      c->send_##entity_name##_state(obj); \
+  }
+
+// Macro for entities with extra parameters (but parameters not used in send)
+#define API_DISPATCH_UPDATE_IGNORE_PARAMS(entity_type, entity_name, ...) \
+  void APIServer::on_##entity_name##_update(entity_type *obj, __VA_ARGS__) { \
+    if (obj->is_internal()) \
+      return; \
+    for (auto &c : this->clients_) \
+      c->send_##entity_name##_state(obj); \
+  }
+
 #ifdef USE_BINARY_SENSOR
-void APIServer::on_binary_sensor_update(binary_sensor::BinarySensor *obj, bool state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_binary_sensor_state(obj);
-}
+API_DISPATCH_UPDATE(binary_sensor::BinarySensor, binary_sensor)
 #endif
 
 #ifdef USE_COVER
-void APIServer::on_cover_update(cover::Cover *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_cover_state(obj);
-}
+API_DISPATCH_UPDATE(cover::Cover, cover)
 #endif
 
 #ifdef USE_FAN
-void APIServer::on_fan_update(fan::Fan *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_fan_state(obj);
-}
+API_DISPATCH_UPDATE(fan::Fan, fan)
 #endif
 
 #ifdef USE_LIGHT
-void APIServer::on_light_update(light::LightState *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_light_state(obj);
-}
+API_DISPATCH_UPDATE(light::LightState, light)
 #endif
 
 #ifdef USE_SENSOR
-void APIServer::on_sensor_update(sensor::Sensor *obj, float state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_sensor_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(sensor::Sensor, sensor, float state)
 #endif
 
 #ifdef USE_SWITCH
-void APIServer::on_switch_update(switch_::Switch *obj, bool state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_switch_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(switch_::Switch, switch, bool state)
 #endif
 
 #ifdef USE_TEXT_SENSOR
-void APIServer::on_text_sensor_update(text_sensor::TextSensor *obj, const std::string &state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_text_sensor_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(text_sensor::TextSensor, text_sensor, const std::string &state)
 #endif
 
 #ifdef USE_CLIMATE
-void APIServer::on_climate_update(climate::Climate *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_climate_state(obj);
-}
+API_DISPATCH_UPDATE(climate::Climate, climate)
 #endif
 
 #ifdef USE_NUMBER
-void APIServer::on_number_update(number::Number *obj, float state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_number_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(number::Number, number, float state)
 #endif
 
 #ifdef USE_DATETIME_DATE
-void APIServer::on_date_update(datetime::DateEntity *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_date_state(obj);
-}
+API_DISPATCH_UPDATE(datetime::DateEntity, date)
 #endif
 
 #ifdef USE_DATETIME_TIME
-void APIServer::on_time_update(datetime::TimeEntity *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_time_state(obj);
-}
+API_DISPATCH_UPDATE(datetime::TimeEntity, time)
 #endif
 
 #ifdef USE_DATETIME_DATETIME
-void APIServer::on_datetime_update(datetime::DateTimeEntity *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_datetime_state(obj);
-}
+API_DISPATCH_UPDATE(datetime::DateTimeEntity, datetime)
 #endif
 
 #ifdef USE_TEXT
-void APIServer::on_text_update(text::Text *obj, const std::string &state) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_text_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(text::Text, text, const std::string &state)
 #endif
 
 #ifdef USE_SELECT
-void APIServer::on_select_update(select::Select *obj, const std::string &state, size_t index) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_select_state(obj);
-}
+API_DISPATCH_UPDATE_IGNORE_PARAMS(select::Select, select, const std::string &state, size_t index)
 #endif
 
 #ifdef USE_LOCK
-void APIServer::on_lock_update(lock::Lock *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_lock_state(obj);
-}
+API_DISPATCH_UPDATE(lock::Lock, lock)
 #endif
 
 #ifdef USE_VALVE
-void APIServer::on_valve_update(valve::Valve *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_valve_state(obj);
-}
+API_DISPATCH_UPDATE(valve::Valve, valve)
 #endif
 
 #ifdef USE_MEDIA_PLAYER
-void APIServer::on_media_player_update(media_player::MediaPlayer *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_media_player_state(obj);
-}
+API_DISPATCH_UPDATE(media_player::MediaPlayer, media_player)
 #endif
 
 #ifdef USE_EVENT
+// Event is a special case - it's the only entity that passes extra parameters to the send method
 void APIServer::on_event(event::Event *obj, const std::string &event_type) {
+  if (obj->is_internal())
+    return;
   for (auto &c : this->clients_)
     c->send_event(obj, event_type);
 }
 #endif
 
 #ifdef USE_UPDATE
-void APIServer::on_update(update::UpdateEntity *obj) {
-  for (auto &c : this->clients_)
-    c->send_update_state(obj);
-}
+API_DISPATCH_UPDATE(update::UpdateEntity, update)
 #endif
 
 #ifdef USE_ALARM_CONTROL_PANEL
-void APIServer::on_alarm_control_panel_update(alarm_control_panel::AlarmControlPanel *obj) {
-  if (obj->is_internal())
-    return;
-  for (auto &c : this->clients_)
-    c->send_alarm_control_panel_state(obj);
-}
+API_DISPATCH_UPDATE(alarm_control_panel::AlarmControlPanel, alarm_control_panel)
 #endif
 
 float APIServer::get_setup_priority() const { return setup_priority::AFTER_WIFI; }
 
 void APIServer::set_port(uint16_t port) { this->port_ = port; }
 
+#ifdef USE_API_PASSWORD
 void APIServer::set_password(const std::string &password) { this->password_ = password; }
+#endif
 
-void APIServer::set_batch_delay(uint32_t batch_delay) { this->batch_delay_ = batch_delay; }
+void APIServer::set_batch_delay(uint16_t batch_delay) { this->batch_delay_ = batch_delay; }
 
 void APIServer::send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
   for (auto &client : this->clients_) {
@@ -479,7 +444,7 @@ bool APIServer::save_noise_psk(psk_t psk, bool make_active) {
 #ifdef USE_HOMEASSISTANT_TIME
 void APIServer::request_time() {
   for (auto &client : this->clients_) {
-    if (!client->remove_ && client->is_authenticated())
+    if (!client->flags_.remove && client->is_authenticated())
       client->send_time_request();
   }
 }
@@ -503,8 +468,8 @@ void APIServer::on_shutdown() {
   for (auto &c : this->clients_) {
     if (!c->send_message(DisconnectRequest())) {
       // If we can't send the disconnect request directly (tx_buffer full),
-      // schedule it in the batch so it will be sent with the 5ms timer
-      c->schedule_message_(nullptr, &APIConnection::try_send_disconnect_request, DisconnectRequest::MESSAGE_TYPE);
+      // schedule it at the front of the batch so it will be sent with priority
+      c->schedule_message_front_(nullptr, &APIConnection::try_send_disconnect_request, DisconnectRequest::MESSAGE_TYPE);
     }
   }
 }

esphome/components/api/api_server.h

@@ -25,6 +25,11 @@ struct SavedNoisePsk {
 } PACKED;  // NOLINT
 #endif
 
+#ifndef USE_API_YAML_SERVICES
+// Forward declaration of helper function
+const std::vector<UserServiceDescriptor *> &get_empty_user_services_instance();
+#endif
+
 class APIServer : public Component, public Controller {
  public:
   APIServer();
@@ -35,13 +40,15 @@ class APIServer : public Component, public Controller {
   void dump_config() override;
   void on_shutdown() override;
   bool teardown() override;
+#ifdef USE_API_PASSWORD
   bool check_password(const std::string &password) const;
   bool uses_password() const;
-  void set_port(uint16_t port);
   void set_password(const std::string &password);
+#endif
+  void set_port(uint16_t port);
   void set_reboot_timeout(uint32_t reboot_timeout);
-  void set_batch_delay(uint32_t batch_delay);
-  uint32_t get_batch_delay() const { return batch_delay_; }
+  void set_batch_delay(uint16_t batch_delay);
+  uint16_t get_batch_delay() const { return batch_delay_; }
 
   // Get reference to shared buffer for API connections
   std::vector<uint8_t> &get_shared_buffer_ref() { return shared_write_buffer_; }
@@ -54,7 +61,7 @@ class APIServer : public Component, public Controller {
 
   void handle_disconnect(APIConnection *conn);
 #ifdef USE_BINARY_SENSOR
-  void on_binary_sensor_update(binary_sensor::BinarySensor *obj, bool state) override;
+  void on_binary_sensor_update(binary_sensor::BinarySensor *obj) override;
 #endif
 #ifdef USE_COVER
   void on_cover_update(cover::Cover *obj) override;
@@ -105,7 +112,18 @@ class APIServer : public Component, public Controller {
   void on_media_player_update(media_player::MediaPlayer *obj) override;
 #endif
   void send_homeassistant_service_call(const HomeassistantServiceResponse &call);
-  void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
+  void register_user_service(UserServiceDescriptor *descriptor) {
+#ifdef USE_API_YAML_SERVICES
+    // Vector is pre-allocated when services are defined in YAML
+    this->user_services_.push_back(descriptor);
+#else
+    // Lazy allocate vector on first use for CustomAPIDevice
+    if (!this->user_services_) {
+      this->user_services_ = std::make_unique<std::vector<UserServiceDescriptor *>>();
+    }
+    this->user_services_->push_back(descriptor);
+#endif
+  }
 #ifdef USE_HOMEASSISTANT_TIME
   void request_time();
 #endif
@@ -134,27 +152,63 @@ class APIServer : public Component, public Controller {
   void get_home_assistant_state(std::string entity_id, optional<std::string> attribute,
                                 std::function<void(std::string)> f);
   const std::vector<HomeAssistantStateSubscription> &get_state_subs() const;
-  const std::vector<UserServiceDescriptor *> &get_user_services() const { return this->user_services_; }
+  const std::vector<UserServiceDescriptor *> &get_user_services() const {
+#ifdef USE_API_YAML_SERVICES
+    return this->user_services_;
+#else
+    if (this->user_services_) {
+      return *this->user_services_;
+    }
+    // Return reference to global empty instance (no guard needed)
+    return get_empty_user_services_instance();
+#endif
+  }
 
+#ifdef USE_API_CLIENT_CONNECTED_TRIGGER
   Trigger<std::string, std::string> *get_client_connected_trigger() const { return this->client_connected_trigger_; }
+#endif
+#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
   Trigger<std::string, std::string> *get_client_disconnected_trigger() const {
     return this->client_disconnected_trigger_;
   }
+#endif
 
  protected:
-  bool shutting_down_ = false;
+  void schedule_reboot_timeout_();
+  // Pointers and pointer-like types first (4 bytes each)
   std::unique_ptr<socket::Socket> socket_ = nullptr;
-  uint16_t port_{6053};
+#ifdef USE_API_CLIENT_CONNECTED_TRIGGER
+  Trigger<std::string, std::string> *client_connected_trigger_ = new Trigger<std::string, std::string>();
+#endif
+#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
+  Trigger<std::string, std::string> *client_disconnected_trigger_ = new Trigger<std::string, std::string>();
+#endif
+
+  // 4-byte aligned types
   uint32_t reboot_timeout_{300000};
-  uint32_t batch_delay_{100};
-  uint32_t last_connected_{0};
+
+  // Vectors and strings (12 bytes each on 32-bit)
   std::vector<std::unique_ptr<APIConnection>> clients_;
+#ifdef USE_API_PASSWORD
   std::string password_;
+#endif
   std::vector<uint8_t> shared_write_buffer_;  // Shared proto write buffer for all connections
   std::vector<HomeAssistantStateSubscription> state_subs_;
+#ifdef USE_API_YAML_SERVICES
+  // When services are defined in YAML, we know at compile time that services will be registered
   std::vector<UserServiceDescriptor *> user_services_;
-  Trigger<std::string, std::string> *client_connected_trigger_ = new Trigger<std::string, std::string>();
-  Trigger<std::string, std::string> *client_disconnected_trigger_ = new Trigger<std::string, std::string>();
+#else
+  // Services can still be registered at runtime by CustomAPIDevice components even when not
+  // defined in YAML. Using unique_ptr allows lazy allocation, saving 12 bytes in the common
+  // case where no services (YAML or custom) are used.
+  std::unique_ptr<std::vector<UserServiceDescriptor *>> user_services_;
+#endif
+
+  // Group smaller types together
+  uint16_t port_{6053};
+  uint16_t batch_delay_{100};
+  bool shutting_down_ = false;
+  // 5 bytes used, 3 bytes padding
 
 #ifdef USE_API_NOISE
   std::shared_ptr<APINoiseContext> noise_ctx_ = std::make_shared<APINoiseContext>();

esphome/components/api/client.py

@@ -4,9 +4,15 @@ import asyncio
 from datetime import datetime
 import logging
 from typing import TYPE_CHECKING, Any
+import warnings
 
-from aioesphomeapi import APIClient, parse_log_message
-from aioesphomeapi.log_runner import async_run
+# Suppress protobuf version warnings
+with warnings.catch_warnings():
+    warnings.filterwarnings(
+        "ignore", category=UserWarning, message=".*Protobuf gencode version.*"
+    )
+    from aioesphomeapi import APIClient, parse_log_message
+    from aioesphomeapi.log_runner import async_run
 
 from esphome.const import CONF_KEY, CONF_PASSWORD, CONF_PORT, __version__
 from esphome.core import CORE
@@ -29,8 +35,8 @@ async def async_run_logs(config: dict[str, Any], address: str) -> None:
     port: int = int(conf[CONF_PORT])
     password: str = conf[CONF_PASSWORD]
     noise_psk: str | None = None
-    if CONF_ENCRYPTION in conf:
-        noise_psk = conf[CONF_ENCRYPTION][CONF_KEY]
+    if (encryption := conf.get(CONF_ENCRYPTION)) and (key := encryption.get(CONF_KEY)):
+        noise_psk = key
     _LOGGER.info("Starting log output from %s using esphome API", address)
     cli = APIClient(
         address,

esphome/components/api/list_entities.cpp

@@ -1,6 +1,7 @@
 #include "list_entities.h"
 #ifdef USE_API
 #include "api_connection.h"
+#include "api_pb2.h"
 #include "esphome/core/application.h"
 #include "esphome/core/log.h"
 #include "esphome/core/util.h"
@@ -8,155 +9,85 @@
 namespace esphome {
 namespace api {
 
+// Generate entity handler implementations using macros
 #ifdef USE_BINARY_SENSOR
-bool ListEntitiesIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
-  this->client_->send_binary_sensor_info(binary_sensor);
-  return true;
-}
+LIST_ENTITIES_HANDLER(binary_sensor, binary_sensor::BinarySensor, ListEntitiesBinarySensorResponse)
 #endif
 #ifdef USE_COVER
-bool ListEntitiesIterator::on_cover(cover::Cover *cover) {
-  this->client_->send_cover_info(cover);
-  return true;
-}
+LIST_ENTITIES_HANDLER(cover, cover::Cover, ListEntitiesCoverResponse)
 #endif
 #ifdef USE_FAN
-bool ListEntitiesIterator::on_fan(fan::Fan *fan) {
-  this->client_->send_fan_info(fan);
-  return true;
-}
+LIST_ENTITIES_HANDLER(fan, fan::Fan, ListEntitiesFanResponse)
 #endif
 #ifdef USE_LIGHT
-bool ListEntitiesIterator::on_light(light::LightState *light) {
-  this->client_->send_light_info(light);
-  return true;
-}
+LIST_ENTITIES_HANDLER(light, light::LightState, ListEntitiesLightResponse)
 #endif
 #ifdef USE_SENSOR
-bool ListEntitiesIterator::on_sensor(sensor::Sensor *sensor) {
-  this->client_->send_sensor_info(sensor);
-  return true;
-}
+LIST_ENTITIES_HANDLER(sensor, sensor::Sensor, ListEntitiesSensorResponse)
 #endif
 #ifdef USE_SWITCH
-bool ListEntitiesIterator::on_switch(switch_::Switch *a_switch) {
-  this->client_->send_switch_info(a_switch);
-  return true;
-}
+LIST_ENTITIES_HANDLER(switch, switch_::Switch, ListEntitiesSwitchResponse)
 #endif
 #ifdef USE_BUTTON
-bool ListEntitiesIterator::on_button(button::Button *button) {
-  this->client_->send_button_info(button);
-  return true;
-}
+LIST_ENTITIES_HANDLER(button, button::Button, ListEntitiesButtonResponse)
 #endif
 #ifdef USE_TEXT_SENSOR
-bool ListEntitiesIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
-  this->client_->send_text_sensor_info(text_sensor);
-  return true;
-}
+LIST_ENTITIES_HANDLER(text_sensor, text_sensor::TextSensor, ListEntitiesTextSensorResponse)
 #endif
 #ifdef USE_LOCK
-bool ListEntitiesIterator::on_lock(lock::Lock *a_lock) {
-  this->client_->send_lock_info(a_lock);
-  return true;
-}
+LIST_ENTITIES_HANDLER(lock, lock::Lock, ListEntitiesLockResponse)
 #endif
 #ifdef USE_VALVE
-bool ListEntitiesIterator::on_valve(valve::Valve *valve) {
-  this->client_->send_valve_info(valve);
-  return true;
-}
+LIST_ENTITIES_HANDLER(valve, valve::Valve, ListEntitiesValveResponse)
+#endif
+#ifdef USE_CAMERA
+LIST_ENTITIES_HANDLER(camera, camera::Camera, ListEntitiesCameraResponse)
+#endif
+#ifdef USE_CLIMATE
+LIST_ENTITIES_HANDLER(climate, climate::Climate, ListEntitiesClimateResponse)
+#endif
+#ifdef USE_NUMBER
+LIST_ENTITIES_HANDLER(number, number::Number, ListEntitiesNumberResponse)
+#endif
+#ifdef USE_DATETIME_DATE
+LIST_ENTITIES_HANDLER(date, datetime::DateEntity, ListEntitiesDateResponse)
+#endif
+#ifdef USE_DATETIME_TIME
+LIST_ENTITIES_HANDLER(time, datetime::TimeEntity, ListEntitiesTimeResponse)
+#endif
+#ifdef USE_DATETIME_DATETIME
+LIST_ENTITIES_HANDLER(datetime, datetime::DateTimeEntity, ListEntitiesDateTimeResponse)
+#endif
+#ifdef USE_TEXT
+LIST_ENTITIES_HANDLER(text, text::Text, ListEntitiesTextResponse)
+#endif
+#ifdef USE_SELECT
+LIST_ENTITIES_HANDLER(select, select::Select, ListEntitiesSelectResponse)
+#endif
+#ifdef USE_MEDIA_PLAYER
+LIST_ENTITIES_HANDLER(media_player, media_player::MediaPlayer, ListEntitiesMediaPlayerResponse)
+#endif
+#ifdef USE_ALARM_CONTROL_PANEL
+LIST_ENTITIES_HANDLER(alarm_control_panel, alarm_control_panel::AlarmControlPanel,
+                      ListEntitiesAlarmControlPanelResponse)
+#endif
+#ifdef USE_EVENT
+LIST_ENTITIES_HANDLER(event, event::Event, ListEntitiesEventResponse)
+#endif
+#ifdef USE_UPDATE
+LIST_ENTITIES_HANDLER(update, update::UpdateEntity, ListEntitiesUpdateResponse)
 #endif
 
+// Special cases that don't follow the pattern
 bool ListEntitiesIterator::on_end() { return this->client_->send_list_info_done(); }
+
 ListEntitiesIterator::ListEntitiesIterator(APIConnection *client) : client_(client) {}
+
 bool ListEntitiesIterator::on_service(UserServiceDescriptor *service) {
   auto resp = service->encode_list_service_response();
   return this->client_->send_message(resp);
 }
 
-#ifdef USE_ESP32_CAMERA
-bool ListEntitiesIterator::on_camera(esp32_camera::ESP32Camera *camera) {
-  this->client_->send_camera_info(camera);
-  return true;
-}
-#endif
-
-#ifdef USE_CLIMATE
-bool ListEntitiesIterator::on_climate(climate::Climate *climate) {
-  this->client_->send_climate_info(climate);
-  return true;
-}
-#endif
-
-#ifdef USE_NUMBER
-bool ListEntitiesIterator::on_number(number::Number *number) {
-  this->client_->send_number_info(number);
-  return true;
-}
-#endif
-
-#ifdef USE_DATETIME_DATE
-bool ListEntitiesIterator::on_date(datetime::DateEntity *date) {
-  this->client_->send_date_info(date);
-  return true;
-}
-#endif
-
-#ifdef USE_DATETIME_TIME
-bool ListEntitiesIterator::on_time(datetime::TimeEntity *time) {
-  this->client_->send_time_info(time);
-  return true;
-}
-#endif
-
-#ifdef USE_DATETIME_DATETIME
-bool ListEntitiesIterator::on_datetime(datetime::DateTimeEntity *datetime) {
-  this->client_->send_datetime_info(datetime);
-  return true;
-}
-#endif
-
-#ifdef USE_TEXT
-bool ListEntitiesIterator::on_text(text::Text *text) {
-  this->client_->send_text_info(text);
-  return true;
-}
-#endif
-
-#ifdef USE_SELECT
-bool ListEntitiesIterator::on_select(select::Select *select) {
-  this->client_->send_select_info(select);
-  return true;
-}
-#endif
-
-#ifdef USE_MEDIA_PLAYER
-bool ListEntitiesIterator::on_media_player(media_player::MediaPlayer *media_player) {
-  this->client_->send_media_player_info(media_player);
-  return true;
-}
-#endif
-#ifdef USE_ALARM_CONTROL_PANEL
-bool ListEntitiesIterator::on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel) {
-  this->client_->send_alarm_control_panel_info(a_alarm_control_panel);
-  return true;
-}
-#endif
-#ifdef USE_EVENT
-bool ListEntitiesIterator::on_event(event::Event *event) {
-  this->client_->send_event_info(event);
-  return true;
-}
-#endif
-#ifdef USE_UPDATE
-bool ListEntitiesIterator::on_update(update::UpdateEntity *update) {
-  this->client_->send_update_info(update);
-  return true;
-}
-#endif
-
 }  // namespace api
 }  // namespace esphome
 #endif

esphome/components/api/list_entities.h

@@ -9,75 +9,83 @@ namespace api {
 
 class APIConnection;
 
+// Macro for generating ListEntitiesIterator handlers
+// Calls schedule_message_ with try_send_*_info
+#define LIST_ENTITIES_HANDLER(entity_type, EntityClass, ResponseType) \
+  bool ListEntitiesIterator::on_##entity_type(EntityClass *entity) { /* NOLINT(bugprone-macro-parentheses) */ \
+    return this->client_->schedule_message_(entity, &APIConnection::try_send_##entity_type##_info, \
+                                            ResponseType::MESSAGE_TYPE); \
+  }
+
 class ListEntitiesIterator : public ComponentIterator {
  public:
   ListEntitiesIterator(APIConnection *client);
 #ifdef USE_BINARY_SENSOR
-  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+  bool on_binary_sensor(binary_sensor::BinarySensor *entity) override;
 #endif
 #ifdef USE_COVER
-  bool on_cover(cover::Cover *cover) override;
+  bool on_cover(cover::Cover *entity) override;
 #endif
 #ifdef USE_FAN
-  bool on_fan(fan::Fan *fan) override;
+  bool on_fan(fan::Fan *entity) override;
 #endif
 #ifdef USE_LIGHT
-  bool on_light(light::LightState *light) override;
+  bool on_light(light::LightState *entity) override;
 #endif
 #ifdef USE_SENSOR
-  bool on_sensor(sensor::Sensor *sensor) override;
+  bool on_sensor(sensor::Sensor *entity) override;
 #endif
 #ifdef USE_SWITCH
-  bool on_switch(switch_::Switch *a_switch) override;
+  bool on_switch(switch_::Switch *entity) override;
 #endif
 #ifdef USE_BUTTON
-  bool on_button(button::Button *button) override;
+  bool on_button(button::Button *entity) override;
 #endif
 #ifdef USE_TEXT_SENSOR
-  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+  bool on_text_sensor(text_sensor::TextSensor *entity) override;
 #endif
   bool on_service(UserServiceDescriptor *service) override;
-#ifdef USE_ESP32_CAMERA
-  bool on_camera(esp32_camera::ESP32Camera *camera) override;
+#ifdef USE_CAMERA
+  bool on_camera(camera::Camera *entity) override;
 #endif
 #ifdef USE_CLIMATE
-  bool on_climate(climate::Climate *climate) override;
+  bool on_climate(climate::Climate *entity) override;
 #endif
 #ifdef USE_NUMBER
-  bool on_number(number::Number *number) override;
+  bool on_number(number::Number *entity) override;
 #endif
 #ifdef USE_DATETIME_DATE
-  bool on_date(datetime::DateEntity *date) override;
+  bool on_date(datetime::DateEntity *entity) override;
 #endif
 #ifdef USE_DATETIME_TIME
-  bool on_time(datetime::TimeEntity *time) override;
+  bool on_time(datetime::TimeEntity *entity) override;
 #endif
 #ifdef USE_DATETIME_DATETIME
-  bool on_datetime(datetime::DateTimeEntity *datetime) override;
+  bool on_datetime(datetime::DateTimeEntity *entity) override;
 #endif
 #ifdef USE_TEXT
-  bool on_text(text::Text *text) override;
+  bool on_text(text::Text *entity) override;
 #endif
 #ifdef USE_SELECT
-  bool on_select(select::Select *select) override;
+  bool on_select(select::Select *entity) override;
 #endif
 #ifdef USE_LOCK
-  bool on_lock(lock::Lock *a_lock) override;
+  bool on_lock(lock::Lock *entity) override;
 #endif
 #ifdef USE_VALVE
-  bool on_valve(valve::Valve *valve) override;
+  bool on_valve(valve::Valve *entity) override;
 #endif
 #ifdef USE_MEDIA_PLAYER
-  bool on_media_player(media_player::MediaPlayer *media_player) override;
+  bool on_media_player(media_player::MediaPlayer *entity) override;
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-  bool on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel) override;
+  bool on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *entity) override;
 #endif
 #ifdef USE_EVENT
-  bool on_event(event::Event *event) override;
+  bool on_event(event::Event *entity) override;
 #endif
 #ifdef USE_UPDATE
-  bool on_update(update::UpdateEntity *update) override;
+  bool on_update(update::UpdateEntity *entity) override;
 #endif
   bool on_end() override;
   bool completed() { return this->state_ == IteratorState::NONE; }

esphome/components/api/proto.h

@@ -327,12 +327,15 @@ class ProtoWriteBuffer {
 class ProtoMessage {
  public:
   virtual ~ProtoMessage() = default;
-  virtual void encode(ProtoWriteBuffer buffer) const = 0;
+  // Default implementation for messages with no fields
+  virtual void encode(ProtoWriteBuffer buffer) const {}
   void decode(const uint8_t *buffer, size_t length);
-  virtual void calculate_size(uint32_t &total_size) const = 0;
+  // Default implementation for messages with no fields
+  virtual void calculate_size(uint32_t &total_size) const {}
 #ifdef HAS_PROTO_MESSAGE_DUMP
   std::string dump() const;
   virtual void dump_to(std::string &out) const = 0;
+  virtual const char *message_name() const { return "unknown"; }
 #endif
 
  protected:
@@ -361,7 +364,7 @@ class ProtoService {
    */
   virtual ProtoWriteBuffer create_buffer(uint32_t reserve_size) = 0;
   virtual bool send_buffer(ProtoWriteBuffer buffer, uint16_t message_type) = 0;
-  virtual bool read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) = 0;
+  virtual void read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) = 0;
 
   // Optimized method that pre-allocates buffer based on message size
   bool send_message_(const ProtoMessage &msg, uint16_t message_type) {
@@ -377,6 +380,26 @@ class ProtoService {
     // Send the buffer
     return this->send_buffer(buffer, message_type);
   }
+
+  // Authentication helper methods
+  bool check_connection_setup_() {
+    if (!this->is_connection_setup()) {
+      this->on_no_setup_connection();
+      return false;
+    }
+    return true;
+  }
+
+  bool check_authenticated_() {
+    if (!this->check_connection_setup_()) {
+      return false;
+    }
+    if (!this->is_authenticated()) {
+      this->on_unauthenticated_access();
+      return false;
+    }
+    return true;
+  }
 };
 
 }  // namespace api

esphome/components/api/subscribe_state.cpp

@@ -6,73 +6,67 @@
 namespace esphome {
 namespace api {
 
+// Generate entity handler implementations using macros
 #ifdef USE_BINARY_SENSOR
-bool InitialStateIterator::on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) {
-  return this->client_->send_binary_sensor_state(binary_sensor);
-}
+INITIAL_STATE_HANDLER(binary_sensor, binary_sensor::BinarySensor)
 #endif
 #ifdef USE_COVER
-bool InitialStateIterator::on_cover(cover::Cover *cover) { return this->client_->send_cover_state(cover); }
+INITIAL_STATE_HANDLER(cover, cover::Cover)
 #endif
 #ifdef USE_FAN
-bool InitialStateIterator::on_fan(fan::Fan *fan) { return this->client_->send_fan_state(fan); }
+INITIAL_STATE_HANDLER(fan, fan::Fan)
 #endif
 #ifdef USE_LIGHT
-bool InitialStateIterator::on_light(light::LightState *light) { return this->client_->send_light_state(light); }
+INITIAL_STATE_HANDLER(light, light::LightState)
 #endif
 #ifdef USE_SENSOR
-bool InitialStateIterator::on_sensor(sensor::Sensor *sensor) { return this->client_->send_sensor_state(sensor); }
+INITIAL_STATE_HANDLER(sensor, sensor::Sensor)
 #endif
 #ifdef USE_SWITCH
-bool InitialStateIterator::on_switch(switch_::Switch *a_switch) { return this->client_->send_switch_state(a_switch); }
+INITIAL_STATE_HANDLER(switch, switch_::Switch)
 #endif
 #ifdef USE_TEXT_SENSOR
-bool InitialStateIterator::on_text_sensor(text_sensor::TextSensor *text_sensor) {
-  return this->client_->send_text_sensor_state(text_sensor);
-}
+INITIAL_STATE_HANDLER(text_sensor, text_sensor::TextSensor)
 #endif
 #ifdef USE_CLIMATE
-bool InitialStateIterator::on_climate(climate::Climate *climate) { return this->client_->send_climate_state(climate); }
+INITIAL_STATE_HANDLER(climate, climate::Climate)
 #endif
 #ifdef USE_NUMBER
-bool InitialStateIterator::on_number(number::Number *number) { return this->client_->send_number_state(number); }
+INITIAL_STATE_HANDLER(number, number::Number)
 #endif
 #ifdef USE_DATETIME_DATE
-bool InitialStateIterator::on_date(datetime::DateEntity *date) { return this->client_->send_date_state(date); }
+INITIAL_STATE_HANDLER(date, datetime::DateEntity)
 #endif
 #ifdef USE_DATETIME_TIME
-bool InitialStateIterator::on_time(datetime::TimeEntity *time) { return this->client_->send_time_state(time); }
+INITIAL_STATE_HANDLER(time, datetime::TimeEntity)
 #endif
 #ifdef USE_DATETIME_DATETIME
-bool InitialStateIterator::on_datetime(datetime::DateTimeEntity *datetime) {
-  return this->client_->send_datetime_state(datetime);
-}
+INITIAL_STATE_HANDLER(datetime, datetime::DateTimeEntity)
 #endif
 #ifdef USE_TEXT
-bool InitialStateIterator::on_text(text::Text *text) { return this->client_->send_text_state(text); }
+INITIAL_STATE_HANDLER(text, text::Text)
 #endif
 #ifdef USE_SELECT
-bool InitialStateIterator::on_select(select::Select *select) { return this->client_->send_select_state(select); }
+INITIAL_STATE_HANDLER(select, select::Select)
 #endif
 #ifdef USE_LOCK
-bool InitialStateIterator::on_lock(lock::Lock *a_lock) { return this->client_->send_lock_state(a_lock); }
+INITIAL_STATE_HANDLER(lock, lock::Lock)
 #endif
 #ifdef USE_VALVE
-bool InitialStateIterator::on_valve(valve::Valve *valve) { return this->client_->send_valve_state(valve); }
+INITIAL_STATE_HANDLER(valve, valve::Valve)
 #endif
 #ifdef USE_MEDIA_PLAYER
-bool InitialStateIterator::on_media_player(media_player::MediaPlayer *media_player) {
-  return this->client_->send_media_player_state(media_player);
-}
+INITIAL_STATE_HANDLER(media_player, media_player::MediaPlayer)
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-bool InitialStateIterator::on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel) {
-  return this->client_->send_alarm_control_panel_state(a_alarm_control_panel);
-}
+INITIAL_STATE_HANDLER(alarm_control_panel, alarm_control_panel::AlarmControlPanel)
 #endif
 #ifdef USE_UPDATE
-bool InitialStateIterator::on_update(update::UpdateEntity *update) { return this->client_->send_update_state(update); }
+INITIAL_STATE_HANDLER(update, update::UpdateEntity)
 #endif
+
+// Special cases (button and event) are already defined inline in subscribe_state.h
+
 InitialStateIterator::InitialStateIterator(APIConnection *client) : client_(client) {}
 
 }  // namespace api

esphome/components/api/subscribe_state.h

@@ -10,71 +10,78 @@ namespace api {
 
 class APIConnection;
 
+// Macro for generating InitialStateIterator handlers
+// Calls send_*_state
+#define INITIAL_STATE_HANDLER(entity_type, EntityClass) \
+  bool InitialStateIterator::on_##entity_type(EntityClass *entity) { /* NOLINT(bugprone-macro-parentheses) */ \
+    return this->client_->send_##entity_type##_state(entity); \
+  }
+
 class InitialStateIterator : public ComponentIterator {
  public:
   InitialStateIterator(APIConnection *client);
 #ifdef USE_BINARY_SENSOR
-  bool on_binary_sensor(binary_sensor::BinarySensor *binary_sensor) override;
+  bool on_binary_sensor(binary_sensor::BinarySensor *entity) override;
 #endif
 #ifdef USE_COVER
-  bool on_cover(cover::Cover *cover) override;
+  bool on_cover(cover::Cover *entity) override;
 #endif
 #ifdef USE_FAN
-  bool on_fan(fan::Fan *fan) override;
+  bool on_fan(fan::Fan *entity) override;
 #endif
 #ifdef USE_LIGHT
-  bool on_light(light::LightState *light) override;
+  bool on_light(light::LightState *entity) override;
 #endif
 #ifdef USE_SENSOR
-  bool on_sensor(sensor::Sensor *sensor) override;
+  bool on_sensor(sensor::Sensor *entity) override;
 #endif
 #ifdef USE_SWITCH
-  bool on_switch(switch_::Switch *a_switch) override;
+  bool on_switch(switch_::Switch *entity) override;
 #endif
 #ifdef USE_BUTTON
   bool on_button(button::Button *button) override { return true; };
 #endif
 #ifdef USE_TEXT_SENSOR
-  bool on_text_sensor(text_sensor::TextSensor *text_sensor) override;
+  bool on_text_sensor(text_sensor::TextSensor *entity) override;
 #endif
 #ifdef USE_CLIMATE
-  bool on_climate(climate::Climate *climate) override;
+  bool on_climate(climate::Climate *entity) override;
 #endif
 #ifdef USE_NUMBER
-  bool on_number(number::Number *number) override;
+  bool on_number(number::Number *entity) override;
 #endif
 #ifdef USE_DATETIME_DATE
-  bool on_date(datetime::DateEntity *date) override;
+  bool on_date(datetime::DateEntity *entity) override;
 #endif
 #ifdef USE_DATETIME_TIME
-  bool on_time(datetime::TimeEntity *time) override;
+  bool on_time(datetime::TimeEntity *entity) override;
 #endif
 #ifdef USE_DATETIME_DATETIME
-  bool on_datetime(datetime::DateTimeEntity *datetime) override;
+  bool on_datetime(datetime::DateTimeEntity *entity) override;
 #endif
 #ifdef USE_TEXT
-  bool on_text(text::Text *text) override;
+  bool on_text(text::Text *entity) override;
 #endif
 #ifdef USE_SELECT
-  bool on_select(select::Select *select) override;
+  bool on_select(select::Select *entity) override;
 #endif
 #ifdef USE_LOCK
-  bool on_lock(lock::Lock *a_lock) override;
+  bool on_lock(lock::Lock *entity) override;
 #endif
 #ifdef USE_VALVE
-  bool on_valve(valve::Valve *valve) override;
+  bool on_valve(valve::Valve *entity) override;
 #endif
 #ifdef USE_MEDIA_PLAYER
-  bool on_media_player(media_player::MediaPlayer *media_player) override;
+  bool on_media_player(media_player::MediaPlayer *entity) override;
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-  bool on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *a_alarm_control_panel) override;
+  bool on_alarm_control_panel(alarm_control_panel::AlarmControlPanel *entity) override;
 #endif
 #ifdef USE_EVENT
   bool on_event(event::Event *event) override { return true; };
 #endif
 #ifdef USE_UPDATE
-  bool on_update(update::UpdateEntity *update) override;
+  bool on_update(update::UpdateEntity *entity) override;
 #endif
   bool completed() { return this->state_ == IteratorState::NONE; }
 

esphome/components/as5600/as5600.h

@@ -50,7 +50,6 @@ class AS5600Component : public Component, public i2c::I2CDevice {
   void setup() override;
   void dump_config() override;
   /// HARDWARE_LATE setup priority
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   // configuration setters
   void set_dir_pin(InternalGPIOPin *pin) { this->dir_pin_ = pin; }

esphome/components/async_tcp/__init__.py

@@ -5,6 +5,7 @@ from esphome.const import (
     PLATFORM_BK72XX,
     PLATFORM_ESP32,
     PLATFORM_ESP8266,
+    PLATFORM_LN882X,
     PLATFORM_RTL87XX,
 )
 from esphome.core import CORE, coroutine_with_priority
@@ -14,15 +15,23 @@ CODEOWNERS = ["@OttoWinter"]
 CONFIG_SCHEMA = cv.All(
     cv.Schema({}),
     cv.only_with_arduino,
-    cv.only_on([PLATFORM_ESP32, PLATFORM_ESP8266, PLATFORM_BK72XX, PLATFORM_RTL87XX]),
+    cv.only_on(
+        [
+            PLATFORM_ESP32,
+            PLATFORM_ESP8266,
+            PLATFORM_BK72XX,
+            PLATFORM_LN882X,
+            PLATFORM_RTL87XX,
+        ]
+    ),
 )
 
 
 @coroutine_with_priority(200.0)
 async def to_code(config):
     if CORE.is_esp32 or CORE.is_libretiny:
-        # https://github.com/esphome/AsyncTCP/blob/master/library.json
-        cg.add_library("esphome/AsyncTCP-esphome", "2.1.4")
+        # https://github.com/ESP32Async/AsyncTCP
+        cg.add_library("ESP32Async/AsyncTCP", "3.4.4")
     elif CORE.is_esp8266:
-        # https://github.com/esphome/ESPAsyncTCP
-        cg.add_library("esphome/ESPAsyncTCP-esphome", "2.0.0")
+        # https://github.com/ESP32Async/ESPAsyncTCP
+        cg.add_library("ESP32Async/ESPAsyncTCP", "2.0.0")

esphome/components/atc_mithermometer/atc_mithermometer.h

@@ -25,7 +25,6 @@ class ATCMiThermometer : public Component, public esp32_ble_tracker::ESPBTDevice
 
   bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_temperature(sensor::Sensor *temperature) { temperature_ = temperature; }
   void set_humidity(sensor::Sensor *humidity) { humidity_ = humidity; }
   void set_battery_level(sensor::Sensor *battery_level) { battery_level_ = battery_level; }

esphome/components/atm90e32/atm90e32.cpp

@@ -1,6 +1,7 @@
 #include "atm90e32.h"
 #include <cinttypes>
 #include <cmath>
+#include <numbers>
 #include "esphome/core/log.h"
 
 namespace esphome {
@@ -848,7 +849,7 @@ uint16_t ATM90E32Component::calculate_voltage_threshold(int line_freq, uint16_t
   float nominal_voltage = (line_freq == 60) ? 120.0f : 220.0f;
   float target_voltage = nominal_voltage * multiplier;
 
-  float peak_01v = target_voltage * 100.0f * std::sqrt(2.0f);  // convert RMS → peak, scale to 0.01V
+  float peak_01v = target_voltage * 100.0f * std::numbers::sqrt2_v<float>;  // convert RMS → peak, scale to 0.01V
   float divider = (2.0f * ugain) / 32768.0f;
 
   float threshold = peak_01v / divider;

esphome/components/audio/audio_decoder.cpp

@@ -312,7 +312,7 @@ FileDecoderState AudioDecoder::decode_mp3_() {
   if (err) {
     switch (err) {
       case esp_audio_libs::helix_decoder::ERR_MP3_OUT_OF_MEMORY:
-        // Intentional fallthrough
+        [[fallthrough]];
       case esp_audio_libs::helix_decoder::ERR_MP3_NULL_POINTER:
         return FileDecoderState::FAILED;
         break;

esphome/components/audio/audio_reader.cpp

@@ -5,6 +5,7 @@
 #include "esphome/core/defines.h"
 #include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
 
 #if CONFIG_MBEDTLS_CERTIFICATE_BUNDLE
 #include "esp_crt_bundle.h"
@@ -16,13 +17,13 @@ namespace audio {
 static const uint32_t READ_WRITE_TIMEOUT_MS = 20;
 
 static const uint32_t CONNECTION_TIMEOUT_MS = 5000;
-
-// The number of times the http read times out with no data before throwing an error
-static const uint32_t ERROR_COUNT_NO_DATA_READ_TIMEOUT = 100;
+static const uint8_t MAX_FETCHING_HEADER_ATTEMPTS = 6;
 
 static const size_t HTTP_STREAM_BUFFER_SIZE = 2048;
 
-static const uint8_t MAX_REDIRECTION = 5;
+static const uint8_t MAX_REDIRECTIONS = 5;
+
+static const char *const TAG = "audio_reader";
 
 // Some common HTTP status codes - borrowed from http_request component accessed 20241224
 enum HttpStatus {
@@ -94,7 +95,7 @@ esp_err_t AudioReader::start(const std::string &uri, AudioFileType &file_type) {
   client_config.url = uri.c_str();
   client_config.cert_pem = nullptr;
   client_config.disable_auto_redirect = false;
-  client_config.max_redirection_count = 10;
+  client_config.max_redirection_count = MAX_REDIRECTIONS;
   client_config.event_handler = http_event_handler;
   client_config.user_data = this;
   client_config.buffer_size = HTTP_STREAM_BUFFER_SIZE;
@@ -116,12 +117,29 @@ esp_err_t AudioReader::start(const std::string &uri, AudioFileType &file_type) {
   esp_err_t err = esp_http_client_open(this->client_, 0);
 
   if (err != ESP_OK) {
+    ESP_LOGE(TAG, "Failed to open URL");
     this->cleanup_connection_();
     return err;
   }
 
   int64_t header_length = esp_http_client_fetch_headers(this->client_);
+  uint8_t reattempt_count = 0;
+  while ((header_length < 0) && (reattempt_count < MAX_FETCHING_HEADER_ATTEMPTS)) {
+    this->cleanup_connection_();
+    if (header_length != -ESP_ERR_HTTP_EAGAIN) {
+      // Serious error, no recovery
+      return ESP_FAIL;
+    } else {
+      // Reconnect from a fresh state to avoid a bug where it never reads the headers even if made available
+      this->client_ = esp_http_client_init(&client_config);
+      esp_http_client_open(this->client_, 0);
+      header_length = esp_http_client_fetch_headers(this->client_);
+      ++reattempt_count;
+    }
+  }
+
   if (header_length < 0) {
+    ESP_LOGE(TAG, "Failed to fetch headers");
     this->cleanup_connection_();
     return ESP_FAIL;
   }
@@ -135,7 +153,7 @@ esp_err_t AudioReader::start(const std::string &uri, AudioFileType &file_type) {
 
   ssize_t redirect_count = 0;
 
-  while ((esp_http_client_set_redirection(this->client_) == ESP_OK) && (redirect_count < MAX_REDIRECTION)) {
+  while ((esp_http_client_set_redirection(this->client_) == ESP_OK) && (redirect_count < MAX_REDIRECTIONS)) {
     err = esp_http_client_open(this->client_, 0);
     if (err != ESP_OK) {
       this->cleanup_connection_();
@@ -267,27 +285,29 @@ AudioReaderState AudioReader::http_read_() {
       return AudioReaderState::FINISHED;
     }
   } else if (this->output_transfer_buffer_->free() > 0) {
-    size_t bytes_to_read = this->output_transfer_buffer_->free();
-    int received_len =
-        esp_http_client_read(this->client_, (char *) this->output_transfer_buffer_->get_buffer_end(), bytes_to_read);
+    int received_len = esp_http_client_read(this->client_, (char *) this->output_transfer_buffer_->get_buffer_end(),
+                                            this->output_transfer_buffer_->free());
 
     if (received_len > 0) {
       this->output_transfer_buffer_->increase_buffer_length(received_len);
       this->last_data_read_ms_ = millis();
-    } else if (received_len < 0) {
+      return AudioReaderState::READING;
+    } else if (received_len <= 0) {
       // HTTP read error
-      this->cleanup_connection_();
-      return AudioReaderState::FAILED;
-    } else {
-      if (bytes_to_read > 0) {
-        // Read timed out
-        if ((millis() - this->last_data_read_ms_) > CONNECTION_TIMEOUT_MS) {
-          this->cleanup_connection_();
-          return AudioReaderState::FAILED;
-        }
-
-        delay(READ_WRITE_TIMEOUT_MS);
+      if (received_len == -1) {
+        // A true connection error occured, no chance at recovery
+        this->cleanup_connection_();
+        return AudioReaderState::FAILED;
       }
+
+      // Read timed out, manually verify if it has been too long since the last successful read
+      if ((millis() - this->last_data_read_ms_) > MAX_FETCHING_HEADER_ATTEMPTS * CONNECTION_TIMEOUT_MS) {
+        ESP_LOGE(TAG, "Timed out");
+        this->cleanup_connection_();
+        return AudioReaderState::FAILED;
+      }
+
+      delay(READ_WRITE_TIMEOUT_MS);
     }
   }
 

esphome/components/audio/audio_transfer_buffer.cpp

@@ -86,7 +86,7 @@ bool AudioTransferBuffer::reallocate(size_t new_buffer_size) {
 bool AudioTransferBuffer::allocate_buffer_(size_t buffer_size) {
   this->buffer_size_ = buffer_size;
 
-  RAMAllocator<uint8_t> allocator(ExternalRAMAllocator<uint8_t>::ALLOW_FAILURE);
+  RAMAllocator<uint8_t> allocator;
 
   this->buffer_ = allocator.allocate(this->buffer_size_);
   if (this->buffer_ == nullptr) {
@@ -101,7 +101,7 @@ bool AudioTransferBuffer::allocate_buffer_(size_t buffer_size) {
 
 void AudioTransferBuffer::deallocate_buffer_() {
   if (this->buffer_ != nullptr) {
-    RAMAllocator<uint8_t> allocator(ExternalRAMAllocator<uint8_t>::ALLOW_FAILURE);
+    RAMAllocator<uint8_t> allocator;
     allocator.deallocate(this->buffer_, this->buffer_size_);
     this->buffer_ = nullptr;
     this->data_start_ = nullptr;

esphome/components/b_parasite/b_parasite.h

@@ -16,7 +16,6 @@ class BParasite : public Component, public esp32_ble_tracker::ESPBTDeviceListene
 
   bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   void set_battery_voltage(sensor::Sensor *battery_voltage) { battery_voltage_ = battery_voltage; }
   void set_temperature(sensor::Sensor *temperature) { temperature_ = temperature; }

esphome/components/bedjet/bedjet_hub.cpp

@@ -480,7 +480,11 @@ void BedJetHub::set_clock(uint8_t hour, uint8_t minute) {
 
 /* Internal */
 
-void BedJetHub::loop() {}
+void BedJetHub::loop() {
+  // Parent BLEClientNode has a loop() method, but this component uses
+  // polling via update() and BLE callbacks so loop isn't needed
+  this->disable_loop();
+}
 void BedJetHub::update() { this->dispatch_status_(); }
 
 void BedJetHub::dump_config() {

esphome/components/bedjet/climate/bedjet_climate.cpp

@@ -83,7 +83,11 @@ void BedJetClimate::reset_state_() {
   this->publish_state();
 }
 
-void BedJetClimate::loop() {}
+void BedJetClimate::loop() {
+  // This component is controlled via the parent BedJetHub
+  // Empty loop not needed, disable to save CPU cycles
+  this->disable_loop();
+}
 
 void BedJetClimate::control(const ClimateCall &call) {
   ESP_LOGD(TAG, "Received BedJetClimate::control");

esphome/components/beken_spi_led_strip/led_strip.cpp

@@ -7,11 +7,13 @@
 
 extern "C" {
 #include "rtos_pub.h"
-#include "spi.h"
+// rtos_pub.h must be included before the rest of the includes
+
 #include "arm_arch.h"
 #include "general_dma_pub.h"
 #include "gpio_pub.h"
 #include "icu_pub.h"
+#include "spi.h"
 #undef SPI_DAT
 #undef SPI_BASE
 };
@@ -124,7 +126,7 @@ void BekenSPILEDStripLightOutput::setup() {
   size_t buffer_size = this->get_buffer_size_();
   size_t dma_buffer_size = (buffer_size * 8) + (2 * 64);
 
-  ExternalRAMAllocator<uint8_t> allocator(ExternalRAMAllocator<uint8_t>::ALLOW_FAILURE);
+  RAMAllocator<uint8_t> allocator;
   this->buf_ = allocator.allocate(buffer_size);
   if (this->buf_ == nullptr) {
     ESP_LOGE(TAG, "Cannot allocate LED buffer!");

esphome/components/bh1750/bh1750.cpp

@@ -50,7 +50,7 @@ void BH1750Sensor::read_lx_(BH1750Mode mode, uint8_t mtreg, const std::function<
   // turn on (after one-shot sensor automatically powers down)
   uint8_t turn_on = BH1750_COMMAND_POWER_ON;
   if (this->write(&turn_on, 1) != i2c::ERROR_OK) {
-    ESP_LOGW(TAG, "Turning on BH1750 failed");
+    ESP_LOGW(TAG, "Power on failed");
     f(NAN);
     return;
   }
@@ -60,7 +60,7 @@ void BH1750Sensor::read_lx_(BH1750Mode mode, uint8_t mtreg, const std::function<
     uint8_t mtreg_hi = BH1750_COMMAND_MT_REG_HI | ((mtreg >> 5) & 0b111);
     uint8_t mtreg_lo = BH1750_COMMAND_MT_REG_LO | ((mtreg >> 0) & 0b11111);
     if (this->write(&mtreg_hi, 1) != i2c::ERROR_OK || this->write(&mtreg_lo, 1) != i2c::ERROR_OK) {
-      ESP_LOGW(TAG, "Setting measurement time for BH1750 failed");
+      ESP_LOGW(TAG, "Set measurement time failed");
       active_mtreg_ = 0;
       f(NAN);
       return;
@@ -88,7 +88,7 @@ void BH1750Sensor::read_lx_(BH1750Mode mode, uint8_t mtreg, const std::function<
       return;
   }
   if (this->write(&cmd, 1) != i2c::ERROR_OK) {
-    ESP_LOGW(TAG, "Starting measurement for BH1750 failed");
+    ESP_LOGW(TAG, "Start measurement failed");
     f(NAN);
     return;
   }
@@ -99,7 +99,7 @@ void BH1750Sensor::read_lx_(BH1750Mode mode, uint8_t mtreg, const std::function<
   this->set_timeout("read", meas_time, [this, mode, mtreg, f]() {
     uint16_t raw_value;
     if (this->read(reinterpret_cast<uint8_t *>(&raw_value), 2) != i2c::ERROR_OK) {
-      ESP_LOGW(TAG, "Reading BH1750 data failed");
+      ESP_LOGW(TAG, "Read data failed");
       f(NAN);
       return;
     }
@@ -156,7 +156,7 @@ void BH1750Sensor::update() {
         this->publish_state(NAN);
         return;
       }
-      ESP_LOGD(TAG, "'%s': Got illuminance=%.1flx", this->get_name().c_str(), val);
+      ESP_LOGD(TAG, "'%s': Illuminance=%.1flx", this->get_name().c_str(), val);
       this->status_clear_warning();
       this->publish_state(val);
     });

esphome/components/binary_sensor/__init__.py

@@ -1,7 +1,10 @@
+from logging import getLogger
+
 from esphome import automation, core
 from esphome.automation import Condition, maybe_simple_id
 import esphome.codegen as cg
 from esphome.components import mqtt, web_server
+from esphome.components.const import CONF_ON_STATE_CHANGE
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_DELAY,
@@ -57,8 +60,8 @@ from esphome.const import (
     DEVICE_CLASS_WINDOW,
 )
 from esphome.core import CORE, coroutine_with_priority
+from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
-from esphome.cpp_helpers import setup_entity
 from esphome.util import Registry
 
 CODEOWNERS = ["@esphome/core"]
@@ -98,6 +101,7 @@ IS_PLATFORM_COMPONENT = True
 
 CONF_TIME_OFF = "time_off"
 CONF_TIME_ON = "time_on"
+CONF_TRIGGER_ON_INITIAL_STATE = "trigger_on_initial_state"
 
 DEFAULT_DELAY = "1s"
 DEFAULT_TIME_OFF = "100ms"
@@ -127,15 +131,24 @@ MultiClickTriggerEvent = binary_sensor_ns.struct("MultiClickTriggerEvent")
 StateTrigger = binary_sensor_ns.class_(
     "StateTrigger", automation.Trigger.template(bool)
 )
+StateChangeTrigger = binary_sensor_ns.class_(
+    "StateChangeTrigger",
+    automation.Trigger.template(cg.optional.template(bool), cg.optional.template(bool)),
+)
+
 BinarySensorPublishAction = binary_sensor_ns.class_(
     "BinarySensorPublishAction", automation.Action
 )
+BinarySensorInvalidateAction = binary_sensor_ns.class_(
+    "BinarySensorInvalidateAction", automation.Action
+)
 
 # Condition
 BinarySensorCondition = binary_sensor_ns.class_("BinarySensorCondition", Condition)
 
 # Filters
 Filter = binary_sensor_ns.class_("Filter")
+TimeoutFilter = binary_sensor_ns.class_("TimeoutFilter", Filter, cg.Component)
 DelayedOnOffFilter = binary_sensor_ns.class_("DelayedOnOffFilter", Filter, cg.Component)
 DelayedOnFilter = binary_sensor_ns.class_("DelayedOnFilter", Filter, cg.Component)
 DelayedOffFilter = binary_sensor_ns.class_("DelayedOffFilter", Filter, cg.Component)
@@ -144,6 +157,8 @@ AutorepeatFilter = binary_sensor_ns.class_("AutorepeatFilter", Filter, cg.Compon
 LambdaFilter = binary_sensor_ns.class_("LambdaFilter", Filter)
 SettleFilter = binary_sensor_ns.class_("SettleFilter", Filter, cg.Component)
 
+_LOGGER = getLogger(__name__)
+
 FILTER_REGISTRY = Registry()
 validate_filters = cv.validate_registry("filter", FILTER_REGISTRY)
 
@@ -157,6 +172,19 @@ async def invert_filter_to_code(config, filter_id):
     return cg.new_Pvariable(filter_id)
 
 
+@register_filter(
+    "timeout",
+    TimeoutFilter,
+    cv.templatable(cv.positive_time_period_milliseconds),
+)
+async def timeout_filter_to_code(config, filter_id):
+    var = cg.new_Pvariable(filter_id)
+    await cg.register_component(var, {})
+    template_ = await cg.templatable(config, [], cg.uint32)
+    cg.add(var.set_timeout_value(template_))
+    return var
+
+
 @register_filter(
     "delayed_on_off",
     DelayedOnOffFilter,
@@ -386,6 +414,14 @@ def validate_click_timing(value):
     return value
 
 
+def validate_publish_initial_state(value):
+    value = cv.boolean(value)
+    _LOGGER.warning(
+        "The 'publish_initial_state' option has been replaced by 'trigger_on_initial_state' and will be removed in a future release"
+    )
+    return value
+
+
 _BINARY_SENSOR_SCHEMA = (
     cv.ENTITY_BASE_SCHEMA.extend(web_server.WEBSERVER_SORTING_SCHEMA)
     .extend(cv.MQTT_COMPONENT_SCHEMA)
@@ -395,7 +431,12 @@ _BINARY_SENSOR_SCHEMA = (
             cv.OnlyWith(CONF_MQTT_ID, "mqtt"): cv.declare_id(
                 mqtt.MQTTBinarySensorComponent
             ),
-            cv.Optional(CONF_PUBLISH_INITIAL_STATE): cv.boolean,
+            cv.Exclusive(
+                CONF_PUBLISH_INITIAL_STATE, CONF_TRIGGER_ON_INITIAL_STATE
+            ): validate_publish_initial_state,
+            cv.Exclusive(
+                CONF_TRIGGER_ON_INITIAL_STATE, CONF_TRIGGER_ON_INITIAL_STATE
+            ): cv.boolean,
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
             cv.Optional(CONF_FILTERS): validate_filters,
             cv.Optional(CONF_ON_PRESS): automation.validate_automation(
@@ -454,11 +495,19 @@ _BINARY_SENSOR_SCHEMA = (
                     cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(StateTrigger),
                 }
             ),
+            cv.Optional(CONF_ON_STATE_CHANGE): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(StateChangeTrigger),
+                }
+            ),
         }
     )
 )
 
 
+_BINARY_SENSOR_SCHEMA.add_extra(entity_duplicate_validator("binary_sensor"))
+
+
 def binary_sensor_schema(
     class_: MockObjClass = cv.UNDEFINED,
     *,
@@ -489,12 +538,14 @@ BINARY_SENSOR_SCHEMA.add_extra(cv.deprecated_schema_constant("binary_sensor"))
 
 
 async def setup_binary_sensor_core_(var, config):
-    await setup_entity(var, config)
+    await setup_entity(var, config, "binary_sensor")
 
     if (device_class := config.get(CONF_DEVICE_CLASS)) is not None:
         cg.add(var.set_device_class(device_class))
-    if publish_initial_state := config.get(CONF_PUBLISH_INITIAL_STATE):
-        cg.add(var.set_publish_initial_state(publish_initial_state))
+    trigger = config.get(CONF_TRIGGER_ON_INITIAL_STATE, False) or config.get(
+        CONF_PUBLISH_INITIAL_STATE, False
+    )
+    cg.add(var.set_trigger_on_initial_state(trigger))
     if inverted := config.get(CONF_INVERTED):
         cg.add(var.set_inverted(inverted))
     if filters_config := config.get(CONF_FILTERS):
@@ -542,6 +593,17 @@ async def setup_binary_sensor_core_(var, config):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
         await automation.build_automation(trigger, [(bool, "x")], conf)
 
+    for conf in config.get(CONF_ON_STATE_CHANGE, []):
+        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
+        await automation.build_automation(
+            trigger,
+            [
+                (cg.optional.template(bool), "x_previous"),
+                (cg.optional.template(bool), "x"),
+            ],
+            conf,
+        )
+
     if mqtt_id := config.get(CONF_MQTT_ID):
         mqtt_ = cg.new_Pvariable(mqtt_id, var)
         await mqtt.register_mqtt_component(mqtt_, config)
@@ -591,3 +653,18 @@ async def binary_sensor_is_off_to_code(config, condition_id, template_arg, args)
 async def to_code(config):
     cg.add_define("USE_BINARY_SENSOR")
     cg.add_global(binary_sensor_ns.using)
+
+
+@automation.register_action(
+    "binary_sensor.invalidate_state",
+    BinarySensorInvalidateAction,
+    cv.maybe_simple_value(
+        {
+            cv.Required(CONF_ID): cv.use_id(BinarySensor),
+        },
+        key=CONF_ID,
+    ),
+)
+async def binary_sensor_invalidate_state_to_code(config, action_id, template_arg, args):
+    paren = await cg.get_variable(config[CONF_ID])
+    return cg.new_Pvariable(action_id, template_arg, paren)

esphome/components/binary_sensor/automation.h

@@ -96,7 +96,7 @@ class MultiClickTrigger : public Trigger<>, public Component {
       : parent_(parent), timing_(std::move(timing)) {}
 
   void setup() override {
-    this->last_state_ = this->parent_->state;
+    this->last_state_ = this->parent_->get_state_default(false);
     auto f = std::bind(&MultiClickTrigger::on_state_, this, std::placeholders::_1);
     this->parent_->add_on_state_callback(f);
   }
@@ -130,6 +130,14 @@ class StateTrigger : public Trigger<bool> {
   }
 };
 
+class StateChangeTrigger : public Trigger<optional<bool>, optional<bool> > {
+ public:
+  explicit StateChangeTrigger(BinarySensor *parent) {
+    parent->add_full_state_callback(
+        [this](optional<bool> old_state, optional<bool> state) { this->trigger(old_state, state); });
+  }
+};
+
 template<typename... Ts> class BinarySensorCondition : public Condition<Ts...> {
  public:
   BinarySensorCondition(BinarySensor *parent, bool state) : parent_(parent), state_(state) {}
@@ -154,5 +162,15 @@ template<typename... Ts> class BinarySensorPublishAction : public Action<Ts...>
   BinarySensor *sensor_;
 };
 
+template<typename... Ts> class BinarySensorInvalidateAction : public Action<Ts...> {
+ public:
+  explicit BinarySensorInvalidateAction(BinarySensor *sensor) : sensor_(sensor) {}
+
+  void play(Ts... x) override { this->sensor_->invalidate_state(); }
+
+ protected:
+  BinarySensor *sensor_;
+};
+
 }  // namespace binary_sensor
 }  // namespace esphome

esphome/components/binary_sensor/binary_sensor.cpp

@@ -7,42 +7,25 @@ namespace binary_sensor {
 
 static const char *const TAG = "binary_sensor";
 
-void BinarySensor::add_on_state_callback(std::function<void(bool)> &&callback) {
-  this->state_callback_.add(std::move(callback));
-}
-
-void BinarySensor::publish_state(bool state) {
-  if (!this->publish_dedup_.next(state))
-    return;
+void BinarySensor::publish_state(bool new_state) {
   if (this->filter_list_ == nullptr) {
-    this->send_state_internal(state, false);
+    this->send_state_internal(new_state);
   } else {
-    this->filter_list_->input(state, false);
+    this->filter_list_->input(new_state);
   }
 }
-void BinarySensor::publish_initial_state(bool state) {
-  if (!this->publish_dedup_.next(state))
-    return;
-  if (this->filter_list_ == nullptr) {
-    this->send_state_internal(state, true);
-  } else {
-    this->filter_list_->input(state, true);
+void BinarySensor::publish_initial_state(bool new_state) {
+  this->invalidate_state();
+  this->publish_state(new_state);
+}
+void BinarySensor::send_state_internal(bool new_state) {
+  // copy the new state to the visible property for backwards compatibility, before any callbacks
+  this->state = new_state;
+  // Note that set_state_ de-dups and will only trigger callbacks if the state has actually changed
+  if (this->set_state_(new_state)) {
+    ESP_LOGD(TAG, "'%s': New state is %s", this->get_name().c_str(), ONOFF(new_state));
   }
 }
-void BinarySensor::send_state_internal(bool state, bool is_initial) {
-  if (is_initial) {
-    ESP_LOGD(TAG, "'%s': Sending initial state %s", this->get_name().c_str(), ONOFF(state));
-  } else {
-    ESP_LOGD(TAG, "'%s': Sending state %s", this->get_name().c_str(), ONOFF(state));
-  }
-  this->has_state_ = true;
-  this->state = state;
-  if (!is_initial || this->publish_initial_state_) {
-    this->state_callback_.call(state);
-  }
-}
-
-BinarySensor::BinarySensor() : state(false) {}
 
 void BinarySensor::add_filter(Filter *filter) {
   filter->parent_ = this;
@@ -60,7 +43,6 @@ void BinarySensor::add_filters(const std::vector<Filter *> &filters) {
     this->add_filter(filter);
   }
 }
-bool BinarySensor::has_state() const { return this->has_state_; }
 bool BinarySensor::is_status_binary_sensor() const { return false; }
 
 }  // namespace binary_sensor

esphome/components/binary_sensor/binary_sensor.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include "esphome/core/component.h"
 #include "esphome/core/entity_base.h"
 #include "esphome/core/helpers.h"
 #include "esphome/components/binary_sensor/filter.h"
@@ -34,52 +33,39 @@ namespace binary_sensor {
  * The sub classes should notify the front-end of new states via the publish_state() method which
  * handles inverted inputs for you.
  */
-class BinarySensor : public EntityBase, public EntityBase_DeviceClass {
+class BinarySensor : public StatefulEntityBase<bool>, public EntityBase_DeviceClass {
  public:
-  explicit BinarySensor();
-
-  /** Add a callback to be notified of state changes.
-   *
-   * @param callback The void(bool) callback.
-   */
-  void add_on_state_callback(std::function<void(bool)> &&callback);
+  explicit BinarySensor(){};
 
   /** Publish a new state to the front-end.
    *
-   * @param state The new state.
+   * @param new_state The new state.
    */
-  void publish_state(bool state);
+  void publish_state(bool new_state);
 
   /** Publish the initial state, this will not make the callback manager send callbacks
    * and is meant only for the initial state on boot.
    *
-   * @param state The new state.
+   * @param new_state The new state.
    */
-  void publish_initial_state(bool state);
-
-  /// The current reported state of the binary sensor.
-  bool state{false};
+  void publish_initial_state(bool new_state);
 
   void add_filter(Filter *filter);
   void add_filters(const std::vector<Filter *> &filters);
 
-  void set_publish_initial_state(bool publish_initial_state) { this->publish_initial_state_ = publish_initial_state; }
-
   // ========== INTERNAL METHODS ==========
   // (In most use cases you won't need these)
-  void send_state_internal(bool state, bool is_initial);
+  void send_state_internal(bool new_state);
 
   /// Return whether this binary sensor has outputted a state.
-  virtual bool has_state() const;
-
   virtual bool is_status_binary_sensor() const;
 
+  // For backward compatibility, provide an accessible property
+
+  bool state{};
+
  protected:
-  CallbackManager<void(bool)> state_callback_{};
   Filter *filter_list_{nullptr};
-  bool has_state_{false};
-  bool publish_initial_state_{false};
-  Deduplicator<bool> publish_dedup_;
 };
 
 class BinarySensorInitiallyOff : public BinarySensor {

esphome/components/binary_sensor/filter.cpp

@@ -9,37 +9,42 @@ namespace binary_sensor {
 
 static const char *const TAG = "sensor.filter";
 
-void Filter::output(bool value, bool is_initial) {
+void Filter::output(bool value) {
+  if (this->next_ == nullptr) {
+    this->parent_->send_state_internal(value);
+  } else {
+    this->next_->input(value);
+  }
+}
+void Filter::input(bool value) {
   if (!this->dedup_.next(value))
     return;
-
-  if (this->next_ == nullptr) {
-    this->parent_->send_state_internal(value, is_initial);
-  } else {
-    this->next_->input(value, is_initial);
-  }
-}
-void Filter::input(bool value, bool is_initial) {
-  auto b = this->new_value(value, is_initial);
+  auto b = this->new_value(value);
   if (b.has_value()) {
-    this->output(*b, is_initial);
+    this->output(*b);
   }
 }
 
-optional<bool> DelayedOnOffFilter::new_value(bool value, bool is_initial) {
+void TimeoutFilter::input(bool value) {
+  this->set_timeout("timeout", this->timeout_delay_.value(), [this]() { this->parent_->invalidate_state(); });
+  // we do not de-dup here otherwise changes from invalid to valid state will not be output
+  this->output(value);
+}
+
+optional<bool> DelayedOnOffFilter::new_value(bool value) {
   if (value) {
-    this->set_timeout("ON_OFF", this->on_delay_.value(), [this, is_initial]() { this->output(true, is_initial); });
+    this->set_timeout("ON_OFF", this->on_delay_.value(), [this]() { this->output(true); });
   } else {
-    this->set_timeout("ON_OFF", this->off_delay_.value(), [this, is_initial]() { this->output(false, is_initial); });
+    this->set_timeout("ON_OFF", this->off_delay_.value(), [this]() { this->output(false); });
   }
   return {};
 }
 
 float DelayedOnOffFilter::get_setup_priority() const { return setup_priority::HARDWARE; }
 
-optional<bool> DelayedOnFilter::new_value(bool value, bool is_initial) {
+optional<bool> DelayedOnFilter::new_value(bool value) {
   if (value) {
-    this->set_timeout("ON", this->delay_.value(), [this, is_initial]() { this->output(true, is_initial); });
+    this->set_timeout("ON", this->delay_.value(), [this]() { this->output(true); });
     return {};
   } else {
     this->cancel_timeout("ON");
@@ -49,9 +54,9 @@ optional<bool> DelayedOnFilter::new_value(bool value, bool is_initial) {
 
 float DelayedOnFilter::get_setup_priority() const { return setup_priority::HARDWARE; }
 
-optional<bool> DelayedOffFilter::new_value(bool value, bool is_initial) {
+optional<bool> DelayedOffFilter::new_value(bool value) {
   if (!value) {
-    this->set_timeout("OFF", this->delay_.value(), [this, is_initial]() { this->output(false, is_initial); });
+    this->set_timeout("OFF", this->delay_.value(), [this]() { this->output(false); });
     return {};
   } else {
     this->cancel_timeout("OFF");
@@ -61,11 +66,11 @@ optional<bool> DelayedOffFilter::new_value(bool value, bool is_initial) {
 
 float DelayedOffFilter::get_setup_priority() const { return setup_priority::HARDWARE; }
 
-optional<bool> InvertFilter::new_value(bool value, bool is_initial) { return !value; }
+optional<bool> InvertFilter::new_value(bool value) { return !value; }
 
 AutorepeatFilter::AutorepeatFilter(std::vector<AutorepeatFilterTiming> timings) : timings_(std::move(timings)) {}
 
-optional<bool> AutorepeatFilter::new_value(bool value, bool is_initial) {
+optional<bool> AutorepeatFilter::new_value(bool value) {
   if (value) {
     // Ignore if already running
     if (this->active_timing_ != 0)
@@ -101,7 +106,7 @@ void AutorepeatFilter::next_timing_() {
 
 void AutorepeatFilter::next_value_(bool val) {
   const AutorepeatFilterTiming &timing = this->timings_[this->active_timing_ - 2];
-  this->output(val, false);  // This is at least the second one so not initial
+  this->output(val);  // This is at least the second one so not initial
   this->set_timeout("ON_OFF", val ? timing.time_on : timing.time_off, [this, val]() { this->next_value_(!val); });
 }
 
@@ -109,18 +114,18 @@ float AutorepeatFilter::get_setup_priority() const { return setup_priority::HARD
 
 LambdaFilter::LambdaFilter(std::function<optional<bool>(bool)> f) : f_(std::move(f)) {}
 
-optional<bool> LambdaFilter::new_value(bool value, bool is_initial) { return this->f_(value); }
+optional<bool> LambdaFilter::new_value(bool value) { return this->f_(value); }
 
-optional<bool> SettleFilter::new_value(bool value, bool is_initial) {
+optional<bool> SettleFilter::new_value(bool value) {
   if (!this->steady_) {
-    this->set_timeout("SETTLE", this->delay_.value(), [this, value, is_initial]() {
+    this->set_timeout("SETTLE", this->delay_.value(), [this, value]() {
       this->steady_ = true;
-      this->output(value, is_initial);
+      this->output(value);
     });
     return {};
   } else {
     this->steady_ = false;
-    this->output(value, is_initial);
+    this->output(value);
     this->set_timeout("SETTLE", this->delay_.value(), [this]() { this->steady_ = true; });
     return value;
   }

esphome/components/binary_sensor/filter.h

@@ -14,11 +14,11 @@ class BinarySensor;
 
 class Filter {
  public:
-  virtual optional<bool> new_value(bool value, bool is_initial) = 0;
+  virtual optional<bool> new_value(bool value) = 0;
 
-  void input(bool value, bool is_initial);
+  virtual void input(bool value);
 
-  void output(bool value, bool is_initial);
+  void output(bool value);
 
  protected:
   friend BinarySensor;
@@ -28,9 +28,19 @@ class Filter {
   Deduplicator<bool> dedup_;
 };
 
+class TimeoutFilter : public Filter, public Component {
+ public:
+  optional<bool> new_value(bool value) override { return value; }
+  void input(bool value) override;
+  template<typename T> void set_timeout_value(T timeout) { this->timeout_delay_ = timeout; }
+
+ protected:
+  TemplatableValue<uint32_t> timeout_delay_{};
+};
+
 class DelayedOnOffFilter : public Filter, public Component {
  public:
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
   float get_setup_priority() const override;
 
@@ -44,7 +54,7 @@ class DelayedOnOffFilter : public Filter, public Component {
 
 class DelayedOnFilter : public Filter, public Component {
  public:
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
   float get_setup_priority() const override;
 
@@ -56,7 +66,7 @@ class DelayedOnFilter : public Filter, public Component {
 
 class DelayedOffFilter : public Filter, public Component {
  public:
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
   float get_setup_priority() const override;
 
@@ -68,7 +78,7 @@ class DelayedOffFilter : public Filter, public Component {
 
 class InvertFilter : public Filter {
  public:
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 };
 
 struct AutorepeatFilterTiming {
@@ -86,7 +96,7 @@ class AutorepeatFilter : public Filter, public Component {
  public:
   explicit AutorepeatFilter(std::vector<AutorepeatFilterTiming> timings);
 
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
   float get_setup_priority() const override;
 
@@ -102,7 +112,7 @@ class LambdaFilter : public Filter {
  public:
   explicit LambdaFilter(std::function<optional<bool>(bool)> f);
 
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
  protected:
   std::function<optional<bool>(bool)> f_;
@@ -110,7 +120,7 @@ class LambdaFilter : public Filter {
 
 class SettleFilter : public Filter, public Component {
  public:
-  optional<bool> new_value(bool value, bool is_initial) override;
+  optional<bool> new_value(bool value) override;
 
   float get_setup_priority() const override;
 

esphome/components/ble_client/output/ble_binary_output.h

@@ -16,7 +16,6 @@ class BLEBinaryOutput : public output::BinaryOutput, public BLEClientNode, publi
  public:
   void dump_config() override;
   void loop() override {}
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_service_uuid16(uint16_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint16(uuid); }
   void set_service_uuid32(uint32_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint32(uuid); }
   void set_service_uuid128(uint8_t *uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_raw(uuid); }

esphome/components/ble_client/sensor/ble_rssi_sensor.cpp

@@ -11,7 +11,11 @@ namespace ble_client {
 
 static const char *const TAG = "ble_rssi_sensor";
 
-void BLEClientRSSISensor::loop() {}
+void BLEClientRSSISensor::loop() {
+  // Parent BLEClientNode has a loop() method, but this component uses
+  // polling via update() and BLE GAP callbacks so loop isn't needed
+  this->disable_loop();
+}
 
 void BLEClientRSSISensor::dump_config() {
   LOG_SENSOR("", "BLE Client RSSI Sensor", this);

esphome/components/ble_client/sensor/ble_rssi_sensor.h

@@ -18,7 +18,6 @@ class BLEClientRSSISensor : public sensor::Sensor, public PollingComponent, publ
   void loop() override;
   void update() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) override;
 

esphome/components/ble_client/sensor/ble_sensor.cpp

@@ -11,7 +11,11 @@ namespace ble_client {
 
 static const char *const TAG = "ble_sensor";
 
-void BLESensor::loop() {}
+void BLESensor::loop() {
+  // Parent BLEClientNode has a loop() method, but this component uses
+  // polling via update() and BLE callbacks so loop isn't needed
+  this->disable_loop();
+}
 
 void BLESensor::dump_config() {
   LOG_SENSOR("", "BLE Sensor", this);

esphome/components/ble_client/sensor/ble_sensor.h

@@ -24,7 +24,6 @@ class BLESensor : public sensor::Sensor, public PollingComponent, public BLEClie
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_service_uuid16(uint16_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint16(uuid); }
   void set_service_uuid32(uint32_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint32(uuid); }
   void set_service_uuid128(uint8_t *uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_raw(uuid); }

esphome/components/ble_client/switch/ble_switch.h

@@ -19,7 +19,6 @@ class BLEClientSwitch : public switch_::Switch, public Component, public BLEClie
   void loop() override {}
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void write_state(bool state) override;

esphome/components/ble_client/text_sensor/ble_text_sensor.cpp

@@ -14,7 +14,11 @@ static const char *const TAG = "ble_text_sensor";
 
 static const std::string EMPTY = "";
 
-void BLETextSensor::loop() {}
+void BLETextSensor::loop() {
+  // Parent BLEClientNode has a loop() method, but this component uses
+  // polling via update() and BLE callbacks so loop isn't needed
+  this->disable_loop();
+}
 
 void BLETextSensor::dump_config() {
   LOG_TEXT_SENSOR("", "BLE Text Sensor", this);

esphome/components/ble_client/text_sensor/ble_text_sensor.h

@@ -20,7 +20,6 @@ class BLETextSensor : public text_sensor::TextSensor, public PollingComponent, p
   void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void set_service_uuid16(uint16_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint16(uuid); }
   void set_service_uuid32(uint32_t uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_uint32(uuid); }
   void set_service_uuid128(uint8_t *uuid) { this->service_uuid_ = espbt::ESPBTUUID::from_raw(uuid); }

esphome/components/ble_presence/ble_presence_device.h

@@ -105,7 +105,6 @@ class BLEPresenceDevice : public binary_sensor::BinarySensorInitiallyOff,
       this->set_found_(false);
   }
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void set_found_(bool state) {

esphome/components/ble_rssi/ble_rssi_sensor.h

@@ -99,7 +99,6 @@ class BLERSSISensor : public sensor::Sensor, public esp32_ble_tracker::ESPBTDevi
     return false;
   }
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   enum MatchType { MATCH_BY_MAC_ADDRESS, MATCH_BY_IRK, MATCH_BY_SERVICE_UUID, MATCH_BY_IBEACON_UUID };

esphome/components/ble_scanner/ble_scanner.h

@@ -29,7 +29,6 @@ class BLEScanner : public text_sensor::TextSensor, public esp32_ble_tracker::ESP
     return true;
   }
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 };
 
 }  // namespace ble_scanner

esphome/components/bluetooth_proxy/bluetooth_connection.h

@@ -26,10 +26,17 @@ class BluetoothConnection : public esp32_ble_client::BLEClientBase {
 
  protected:
   friend class BluetoothProxy;
-  bool seen_mtu_or_services_{false};
 
-  int16_t send_service_{-2};
+  // Memory optimized layout for 32-bit systems
+  // Group 1: Pointers (4 bytes each, naturally aligned)
   BluetoothProxy *proxy_;
+
+  // Group 2: 2-byte types
+  int16_t send_service_{-2};  // Needs to handle negative values and service count
+
+  // Group 3: 1-byte types
+  bool seen_mtu_or_services_{false};
+  // 1 byte used, 1 byte padding
 };
 
 }  // namespace bluetooth_proxy

esphome/components/bluetooth_proxy/bluetooth_proxy.cpp

@@ -52,11 +52,19 @@ bool BluetoothProxy::parse_device(const esp32_ble_tracker::ESPBTDevice &device)
   return true;
 }
 
-static constexpr size_t FLUSH_BATCH_SIZE = 8;
-static std::vector<api::BluetoothLERawAdvertisement> &get_batch_buffer() {
-  static std::vector<api::BluetoothLERawAdvertisement> batch_buffer;
-  return batch_buffer;
-}
+// Batch size for BLE advertisements to maximize WiFi efficiency
+// Each advertisement is up to 80 bytes when packaged (including protocol overhead)
+// Most advertisements are 20-30 bytes, allowing even more to fit per packet
+// 16 advertisements × 80 bytes (worst case) = 1280 bytes out of ~1320 bytes usable payload
+// This achieves ~97% WiFi MTU utilization while staying under the limit
+static constexpr size_t FLUSH_BATCH_SIZE = 16;
+
+// Global batch buffer to avoid guard variable (saves 8 bytes)
+// This is initialized at program startup before any threads
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+static std::vector<api::BluetoothLERawAdvertisement> batch_buffer;
+
+static std::vector<api::BluetoothLERawAdvertisement> &get_batch_buffer() { return batch_buffer; }
 
 bool BluetoothProxy::parse_devices(const esp32_ble::BLEScanResult *scan_results, size_t count) {
   if (!api::global_api_server->is_connected() || this->api_connection_ == nullptr || !this->raw_advertisements_)
@@ -170,7 +178,7 @@ int BluetoothProxy::get_bluetooth_connections_free() {
 void BluetoothProxy::loop() {
   if (!api::global_api_server->is_connected() || this->api_connection_ == nullptr) {
     for (auto *connection : this->connections_) {
-      if (connection->get_address() != 0) {
+      if (connection->get_address() != 0 && !connection->disconnect_pending()) {
         connection->disconnect();
       }
     }

esphome/components/bluetooth_proxy/bluetooth_proxy.h

@@ -134,11 +134,17 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
 
   BluetoothConnection *get_connection_(uint64_t address, bool reserve);
 
-  bool active_;
-
-  std::vector<BluetoothConnection *> connections_{};
+  // Memory optimized layout for 32-bit systems
+  // Group 1: Pointers (4 bytes each, naturally aligned)
   api::APIConnection *api_connection_{nullptr};
+
+  // Group 2: Container types (typically 12 bytes on 32-bit)
+  std::vector<BluetoothConnection *> connections_{};
+
+  // Group 3: 1-byte types grouped together
+  bool active_;
   bool raw_advertisements_{false};
+  // 2 bytes used, 2 bytes padding
 };
 
 extern BluetoothProxy *global_bluetooth_proxy;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)

esphome/components/bme680/sensor.py

@@ -12,8 +12,8 @@ from esphome.const import (
     CONF_OVERSAMPLING,
     CONF_PRESSURE,
     CONF_TEMPERATURE,
-    DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_ATMOSPHERIC_PRESSURE,
+    DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_TEMPERATURE,
     ICON_GAS_CYLINDER,
     STATE_CLASS_MEASUREMENT,

esphome/components/bmp581/bmp581.h

@@ -61,8 +61,6 @@ enum IIRFilter {
 
 class BMP581Component : public PollingComponent, public i2c::I2CDevice {
  public:
-  float get_setup_priority() const override { return setup_priority::DATA; }
-
   void dump_config() override;
 
   void setup() override;

esphome/components/button/__init__.py

@@ -18,8 +18,8 @@ from esphome.const import (
     DEVICE_CLASS_UPDATE,
 )
 from esphome.core import CORE, coroutine_with_priority
+from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
-from esphome.cpp_helpers import setup_entity
 
 CODEOWNERS = ["@esphome/core"]
 IS_PLATFORM_COMPONENT = True
@@ -61,6 +61,9 @@ _BUTTON_SCHEMA = (
 )
 
 
+_BUTTON_SCHEMA.add_extra(entity_duplicate_validator("button"))
+
+
 def button_schema(
     class_: MockObjClass,
     *,
@@ -87,7 +90,7 @@ BUTTON_SCHEMA.add_extra(cv.deprecated_schema_constant("button"))
 
 
 async def setup_button_core_(var, config):
-    await setup_entity(var, config)
+    await setup_entity(var, config, "button")
 
     for conf in config.get(CONF_ON_PRESS, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)

esphome/components/camera/__init__.py

@@ -0,0 +1 @@
+CODEOWNERS = ["@DT-art1", "@bdraco"]

esphome/components/camera/camera.cpp

@@ -0,0 +1,22 @@
+#include "camera.h"
+
+namespace esphome {
+namespace camera {
+
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+Camera *Camera::global_camera = nullptr;
+
+Camera::Camera() {
+  if (global_camera != nullptr) {
+    this->status_set_error("Multiple cameras are configured, but only one is supported.");
+    this->mark_failed();
+    return;
+  }
+
+  global_camera = this;
+}
+
+Camera *Camera::instance() { return global_camera; }
+
+}  // namespace camera
+}  // namespace esphome

esphome/components/camera/camera.h

@@ -0,0 +1,80 @@
+#pragma once
+
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+#include "esphome/core/entity_base.h"
+#include "esphome/core/helpers.h"
+
+namespace esphome {
+namespace camera {
+
+/** Different sources for filtering.
+ *  IDLE: Camera requests to send an image to the API.
+ *  API_REQUESTER: API requests a new image.
+ *  WEB_REQUESTER: ESP32 web server request an image. Ignored by API.
+ */
+enum CameraRequester : uint8_t { IDLE, API_REQUESTER, WEB_REQUESTER };
+
+/** Abstract camera image base class.
+ *  Encapsulates the JPEG encoded data and it is shared among
+ *  all connected clients.
+ */
+class CameraImage {
+ public:
+  virtual uint8_t *get_data_buffer() = 0;
+  virtual size_t get_data_length() = 0;
+  virtual bool was_requested_by(CameraRequester requester) const = 0;
+  virtual ~CameraImage() {}
+};
+
+/** Abstract image reader base class.
+ *  Keeps track of the data offset of the camera image and
+ *  how many bytes are remaining to read. When the image
+ *  is returned, the shared_ptr is reset and the camera can
+ *  reuse the memory of the camera image.
+ */
+class CameraImageReader {
+ public:
+  virtual void set_image(std::shared_ptr<CameraImage> image) = 0;
+  virtual size_t available() const = 0;
+  virtual uint8_t *peek_data_buffer() = 0;
+  virtual void consume_data(size_t consumed) = 0;
+  virtual void return_image() = 0;
+  virtual ~CameraImageReader() {}
+};
+
+/** Abstract camera base class. Collaborates with API.
+ *  1) API server starts and installs callback (add_image_callback)
+ *     which is called by the camera when a new image is available.
+ *  2) New API client connects and creates a new image reader (create_image_reader).
+ *  3) API connection receives protobuf CameraImageRequest and calls request_image.
+ *  3.a) API connection receives protobuf CameraImageRequest and calls start_stream.
+ *  4) Camera implementation provides JPEG data in the CameraImage and calls callback.
+ *  5) API connection sets the image in the image reader.
+ *  6) API connection consumes data from the image reader and returns the image when finished.
+ *  7.a) Camera captures a new image and continues with 4) until start_stream is called.
+ */
+class Camera : public EntityBase, public Component {
+ public:
+  Camera();
+  // Camera implementation invokes callback to publish a new image.
+  virtual void add_image_callback(std::function<void(std::shared_ptr<CameraImage>)> &&callback) = 0;
+  /// Returns a new camera image reader that keeps track of the JPEG data in the camera image.
+  virtual CameraImageReader *create_image_reader() = 0;
+  // Connection, camera or web server requests one new JPEG image.
+  virtual void request_image(CameraRequester requester) = 0;
+  // Connection, camera or web server requests a stream of images.
+  virtual void start_stream(CameraRequester requester) = 0;
+  // Connection or web server stops the previously started stream.
+  virtual void stop_stream(CameraRequester requester) = 0;
+  virtual ~Camera() {}
+  /// The singleton instance of the camera implementation.
+  static Camera *instance();
+
+ protected:
+  // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
+  static Camera *global_camera;
+};
+
+}  // namespace camera
+}  // namespace esphome

esphome/components/canbus/__init__.py

@@ -1,4 +1,5 @@
 import re
+
 from esphome import automation
 import esphome.codegen as cg
 import esphome.config_validation as cv

esphome/components/cap1188/cap1188.h

@@ -46,7 +46,6 @@ class CAP1188Component : public Component, public i2c::I2CDevice {
   void set_reset_pin(GPIOPin *reset_pin) { this->reset_pin_ = reset_pin; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
   void loop() override;
 
  protected:

esphome/components/captive_portal/__init__.py

@@ -7,11 +7,12 @@ from esphome.const import (
     PLATFORM_BK72XX,
     PLATFORM_ESP32,
     PLATFORM_ESP8266,
+    PLATFORM_LN882X,
     PLATFORM_RTL87XX,
 )
 from esphome.core import CORE, coroutine_with_priority
 
-AUTO_LOAD = ["web_server_base"]
+AUTO_LOAD = ["web_server_base", "ota.web_server"]
 DEPENDENCIES = ["wifi"]
 CODEOWNERS = ["@OttoWinter"]
 
@@ -27,7 +28,15 @@ CONFIG_SCHEMA = cv.All(
             ),
         }
     ).extend(cv.COMPONENT_SCHEMA),
-    cv.only_on([PLATFORM_ESP32, PLATFORM_ESP8266, PLATFORM_BK72XX, PLATFORM_RTL87XX]),
+    cv.only_on(
+        [
+            PLATFORM_ESP32,
+            PLATFORM_ESP8266,
+            PLATFORM_BK72XX,
+            PLATFORM_LN882X,
+            PLATFORM_RTL87XX,
+        ]
+    ),
 )
 
 
@@ -41,6 +50,7 @@ async def to_code(config):
 
     if CORE.using_arduino:
         if CORE.is_esp32:
+            cg.add_library("ESP32 Async UDP", None)
             cg.add_library("DNSServer", None)
             cg.add_library("WiFi", None)
         if CORE.is_esp8266:

esphome/components/captive_portal/captive_portal.cpp

@@ -37,12 +37,16 @@ void CaptivePortal::handle_wifisave(AsyncWebServerRequest *request) {
   request->redirect("/?save");
 }
 
-void CaptivePortal::setup() {}
+void CaptivePortal::setup() {
+#ifndef USE_ARDUINO
+  // No DNS server needed for non-Arduino frameworks
+  this->disable_loop();
+#endif
+}
 void CaptivePortal::start() {
   this->base_->init();
   if (!this->initialized_) {
     this->base_->add_handler(this);
-    this->base_->add_ota_handler();
   }
 
 #ifdef USE_ARDUINO
@@ -50,6 +54,8 @@ void CaptivePortal::start() {
   this->dns_server_->setErrorReplyCode(DNSReplyCode::NoError);
   network::IPAddress ip = wifi::global_wifi_component->wifi_soft_ap_ip();
   this->dns_server_->start(53, "*", ip);
+  // Re-enable loop() when DNS server is started
+  this->enable_loop();
 #endif
 
   this->base_->get_server()->onNotFound([this](AsyncWebServerRequest *req) {
@@ -68,7 +74,11 @@ void CaptivePortal::start() {
 
 void CaptivePortal::handleRequest(AsyncWebServerRequest *req) {
   if (req->url() == "/") {
+#ifndef USE_ESP8266
+    auto *response = req->beginResponse(200, "text/html", INDEX_GZ, sizeof(INDEX_GZ));
+#else
     auto *response = req->beginResponse_P(200, "text/html", INDEX_GZ, sizeof(INDEX_GZ));
+#endif
     response->addHeader("Content-Encoding", "gzip");
     req->send(response);
     return;

esphome/components/captive_portal/captive_portal.h

@@ -21,8 +21,11 @@ class CaptivePortal : public AsyncWebHandler, public Component {
   void dump_config() override;
 #ifdef USE_ARDUINO
   void loop() override {
-    if (this->dns_server_ != nullptr)
+    if (this->dns_server_ != nullptr) {
       this->dns_server_->processNextRequest();
+    } else {
+      this->disable_loop();
+    }
   }
 #endif
   float get_setup_priority() const override;
@@ -37,7 +40,7 @@ class CaptivePortal : public AsyncWebHandler, public Component {
 #endif
   }
 
-  bool canHandle(AsyncWebServerRequest *request) override {
+  bool canHandle(AsyncWebServerRequest *request) const override {
     if (!this->active_)
       return false;
 

esphome/components/ccs811/ccs811.h

@@ -25,8 +25,6 @@ class CCS811Component : public PollingComponent, public i2c::I2CDevice {
 
   void dump_config() override;
 
-  float get_setup_priority() const override { return setup_priority::DATA; }
-
  protected:
   optional<uint8_t> read_status_() { return this->read_byte(0x00); }
   bool status_has_error_() { return this->read_status_().value_or(1) & 1; }

esphome/components/climate/__init__.py

@@ -48,8 +48,8 @@ from esphome.const import (
     CONF_WEB_SERVER,
 )
 from esphome.core import CORE, coroutine_with_priority
+from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
-from esphome.cpp_helpers import setup_entity
 
 IS_PLATFORM_COMPONENT = True
 
@@ -247,6 +247,9 @@ _CLIMATE_SCHEMA = (
 )
 
 
+_CLIMATE_SCHEMA.add_extra(entity_duplicate_validator("climate"))
+
+
 def climate_schema(
     class_: MockObjClass,
     *,
@@ -273,7 +276,7 @@ CLIMATE_SCHEMA.add_extra(cv.deprecated_schema_constant("climate"))
 
 
 async def setup_climate_core_(var, config):
-    await setup_entity(var, config)
+    await setup_entity(var, config, "climate")
 
     visual = config[CONF_VISUAL]
     if (min_temp := visual.get(CONF_MIN_TEMPERATURE)) is not None:

esphome/components/cm1106/sensor.py

@@ -1,10 +1,10 @@
 """CM1106 Sensor component for ESPHome."""
 
-import esphome.codegen as cg
-import esphome.config_validation as cv
 from esphome import automation
 from esphome.automation import maybe_simple_id
+import esphome.codegen as cg
 from esphome.components import sensor, uart
+import esphome.config_validation as cv
 from esphome.const import (
     CONF_CO2,
     CONF_ID,

esphome/components/const/__init__.py

@@ -3,4 +3,5 @@
 CODEOWNERS = ["@esphome/core"]
 
 CONF_DRAW_ROUNDING = "draw_rounding"
+CONF_ON_STATE_CHANGE = "on_state_change"
 CONF_REQUEST_HEADERS = "request_headers"

esphome/components/copy/binary_sensor/copy_binary_sensor.h

@@ -11,7 +11,6 @@ class CopyBinarySensor : public binary_sensor::BinarySensor, public Component {
   void set_source(binary_sensor::BinarySensor *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   binary_sensor::BinarySensor *source_;

esphome/components/copy/button/copy_button.h

@@ -10,7 +10,6 @@ class CopyButton : public button::Button, public Component {
  public:
   void set_source(button::Button *source) { source_ = source; }
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void press_action() override;

esphome/components/copy/cover/copy_cover.h

@@ -11,7 +11,6 @@ class CopyCover : public cover::Cover, public Component {
   void set_source(cover::Cover *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   cover::CoverTraits get_traits() override;
 

esphome/components/copy/fan/copy_fan.h

@@ -11,7 +11,6 @@ class CopyFan : public fan::Fan, public Component {
   void set_source(fan::Fan *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
   fan::FanTraits get_traits() override;
 

esphome/components/copy/lock/copy_lock.h

@@ -11,7 +11,6 @@ class CopyLock : public lock::Lock, public Component {
   void set_source(lock::Lock *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void control(const lock::LockCall &call) override;

esphome/components/copy/number/copy_number.h

@@ -11,7 +11,6 @@ class CopyNumber : public number::Number, public Component {
   void set_source(number::Number *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void control(float value) override;

esphome/components/copy/select/copy_select.h

@@ -11,7 +11,6 @@ class CopySelect : public select::Select, public Component {
   void set_source(select::Select *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   void control(const std::string &value) override;

esphome/components/copy/sensor/copy_sensor.h

@@ -11,7 +11,6 @@ class CopySensor : public sensor::Sensor, public Component {
   void set_source(sensor::Sensor *source) { source_ = source; }
   void setup() override;
   void dump_config() override;
-  float get_setup_priority() const override { return setup_priority::DATA; }
 
  protected:
   sensor::Sensor *source_;