[sendspin] Assert the publish follows the hub call directly

[sendspin] Pass True to the enabled switch define and trim a test docstring
[sendspin] Use an Apply switch for the enabled switch
2026-10-27 00:12:11 +00:00 · 2026-10-26 08:03:12 -10:00 · 2026-10-26 07:31:15 -10:00 · 2026-10-26 07:27:17 -10:00 · 2026-10-26 07:13:44 -10:00 · 2026-10-26 13:03:15 -04:00
250 changed files with 3663 additions and 4418 deletions
@@ -1305,10 +1305,7 @@ def upload_program(
                f"{option_string} is only supported with the esphome OTA platform; "
                "the web_server OTA path can only update the firmware image."
            )
-        binary = CORE.firmware_bin
-        if getattr(args, "file", None) is not None:
-            binary = Path(args.file)
-        return _upload_via_web_server(config, network_devices, binary)
+        return _upload_via_web_server(config, network_devices, _app_ota_image(args))

    return _upload_via_native_api(config, network_devices, args)

@@ -1364,6 +1361,16 @@ def _esphome_ota_conf(config: ConfigType) -> ConfigType | None:
    return next(iter(esphome_ota_items(config)), None)


+def _app_ota_image(args: ArgsProtocol) -> Path:
+    """The file an app update sends: ``--file`` or the build output, as the
+    target platform's ota_image hook picks it."""
+    binary = CORE.firmware_bin
+    if (file := getattr(args, "file", None)) is not None:
+        binary = Path(file)
+    ota_image = platform_hooks.get_platform_hook(CORE.target_platform, "ota_image")
+    return ota_image(binary) if ota_image is not None else binary
+
+
 def _upload_via_native_api(
    config: ConfigType, network_devices: list[str], args: ArgsProtocol
 ) -> tuple[int, str | None]:
@@ -1413,27 +1420,27 @@ def _upload_via_native_api(
                f"flash a build with the option enabled, and then retry {option_string}."
            )

-    binary = CORE.firmware_bin
    ota_type = espota2.OTA_TYPE_UPDATE_APP
+    file = getattr(args, "file", None)
    if getattr(args, "partition_table", False):
        # Fail fast if the resolved ESPHome OTA config does not enable allow_partition_access.
        # The device-side handshake also rejects this with "Device only supports app updates",
        # but checking here surfaces the misconfiguration before opening a network connection.
        check_partition_access("--partition-table")
-        binary = CORE.partition_table_bin
+        binary = Path(file) if file is not None else CORE.partition_table_bin
        ota_type = espota2.OTA_TYPE_UPDATE_PARTITION_TABLE
    elif getattr(args, "bootloader", False):
        check_partition_access("--bootloader")
        if (
-            getattr(args, "file", None) is None
+            file is None
            and (native := native_backend())
            and (hint := getattr(native, "missing_image_hint", lambda: None)())
        ):
            raise EsphomeError(hint)
-        binary = CORE.bootloader_bin
+        binary = Path(file) if file is not None else CORE.bootloader_bin
        ota_type = espota2.OTA_TYPE_UPDATE_BOOTLOADER
-    if getattr(args, "file", None) is not None:
-        binary = Path(args.file)
+    else:
+        binary = _app_ota_image(args)

    if ota_type == espota2.OTA_TYPE_UPDATE_PARTITION_TABLE:
        _validate_partition_table_binary(binary)
@@ -33,9 +33,35 @@ _CACHE_VERSION = 1
 _LAMBDA_KEY = "__esphome_lambda__"


+_CACHE_SUFFIX = ".validated.json"
+
+
 def compiled_config_path(config_filename: str) -> Path:
    """Path to the cached validated config alongside the storage sidecar."""
-    return CORE.data_dir / "storage" / f"{config_filename}.validated.json"
+    return CORE.data_dir / "storage" / f"{config_filename}{_CACHE_SUFFIX}"
+
+
+def invalidate_compiled_config() -> None:
+    """Drop every cache in the storage dir after a change to a file the
+    mtime check cannot see, such as secrets.yaml or an include; other
+    configurations may share that file."""
+    storage = compiled_config_path(CORE.config_filename).parent
+    try:
+        caches = [p for p in storage.iterdir() if p.name.endswith(_CACHE_SUFFIX)]
+    except FileNotFoundError:
+        return
+    except OSError as err:
+        raise EsphomeError(
+            f"Could not list the validated config caches in {storage}: {err}"
+        ) from err
+    for path in caches:
+        try:
+            path.unlink(missing_ok=True)
+        except OSError as err:
+            # A stale cache would present the old key on the next upload
+            raise EsphomeError(
+                f"Could not remove the validated config cache {path}: {err}"
+            ) from err


 def save_compiled_config(config: ConfigType) -> None:
@@ -297,9 +297,7 @@ void ADE7880::init_device_() {
 void ADE7880::reset_device_() {
  if (this->reset_pin_ != nullptr) {
    ESP_LOGD(TAG, "Reset device using RESET pin");
-    this->reset_pin_->digital_write(false);
-    delay(1);
-    this->reset_pin_->digital_write(true);
+    pulse_reset(this->reset_pin_, {.low_ms = 1});
  } else {
    ESP_LOGD(TAG, "Reset device using SWRST command");
    this->write_u16_register16_(CONFIG, CONFIG_SWRST);
@@ -14,80 +14,80 @@ ESPHOME_LOG_TAG(TAG, "aic3204");
    return; \
  }

+static constexpr i2c::I2CRegValue AIC3204_INIT[] PROGMEM = {
+    // Set register page to 0
+    {AIC3204_PAGE_CTRL, 0x00},
+    // Initiate SW reset (PLL is powered off as part of reset)
+    {AIC3204_SW_RST, 0x01},
+    // *** Program clock settings ***
+    // Default is CODEC_CLKIN is from MCLK pin. Don't need to change this.
+    // MDAC*NDAC*FOSR*48Khz = mClk (24.576 MHz when the XMOS is expecting 48kHz audio)
+    // (See page 51 of https://www.ti.com/lit/ml/slaa557/slaa557.pdf)
+    // We do need MDAC*DOSR/32 >= the resource compute level for the processing block
+    // So here 2*128/32 = 8, which is equal to processing block 1 's resource compute
+    // See page 5 of https://www.ti.com/lit/an/slaa404c/slaa404c.pdf for the workflow
+    // for determining these settings.
+    // Power up NDAC and set to 2
+    {AIC3204_NDAC, 0x82},
+    // Power up MDAC and set to 2
+    {AIC3204_MDAC, 0x82},
+    // Program DOSR = 128
+    {AIC3204_DOSR, 0x80},
+    // Set Audio Interface Config: I2S, 32 bits, DOUT always driving
+    {AIC3204_CODEC_IF, 0x30},
+    // For I2S Firmware only, set SCLK/MFP3 pin as Audio Data In
+    {AIC3204_SCLK_MFP3, 0x02},
+    {AIC3204_AUDIO_IF_4, 0x01},
+    {AIC3204_AUDIO_IF_5, 0x01},
+    // Program the DAC processing block to be used - PRB_P1
+    {AIC3204_DAC_SIG_PROC, 0x01},
+    // *** Select Page 1 ***
+    {AIC3204_PAGE_CTRL, 0x01},
+    // Enable the internal AVDD_LDO:
+    {AIC3204_LDO_CTRL, 0x09},
+    // *** Program Analog Blocks ***
+    // Disable Internal Crude AVdd in presence of external AVdd supply or before powering up internal AVdd LDO
+    {AIC3204_PWR_CFG, 0x08},
+    // Enable Master Analog Power Control
+    {AIC3204_LDO_CTRL, 0x01},
+    // Page 125: Common mode control register, set d6 to 1 to make the full chip common mode = 0.75 v
+    // We are using the internal AVdd regulator with a nominal output of 1.72 V (see LDO_CTRL_REGISTER on page 123)
+    // Page 86 says to only set the common mode voltage to 0.9 v if AVdd >= 1.8... but it isn't on our hardware
+    // We also adjust the HPL and HPR gains to -2dB gian later in this config flow compensate (see page 47)
+    // (All pages refer to the TLV320AIC3204 Application Reference Guide)
+    {AIC3204_CM_CTRL, 0x40},
+    // *** Set PowerTune Modes ***
+    // Set the Left & Right DAC PowerTune mode to PTM_P3/4. Use Class-AB driver.
+    {AIC3204_PLAY_CFG1, 0x00},
+    {AIC3204_PLAY_CFG2, 0x00},
+    // Set the REF charging time to 40ms
+    {AIC3204_REF_STARTUP, 0x01},
+    // HP soft stepping settings for optimal pop performance at power up
+    // Rpop used is 6k with N = 6 and soft step = 20usec. This should work with 47uF coupling
+    // capacitor. Can try N=5,6 or 7 time constants as well. Trade-off delay vs “pop” sound.
+    {AIC3204_HP_START, 0x25},
+    // Route Left DAC to HPL
+    {AIC3204_HPL_ROUTE, 0x08},
+    // Route Right DAC to HPR
+    {AIC3204_HPR_ROUTE, 0x08},
+    // Route Left DAC to LOL
+    {AIC3204_LOL_ROUTE, 0x08},
+    // Route Right DAC to LOR
+    {AIC3204_LOR_ROUTE, 0x08},
+    // Unmute HPL and set gain to -2dB (see comment before configuring the AIC3204_CM_CTRL register)
+    {AIC3204_HPL_GAIN, 0x3e},
+    // Unmute HPR and set gain to -2dB (see comment before configuring the AIC3204_CM_CTRL register)
+    {AIC3204_HPR_GAIN, 0x3e},
+    // Unmute LOL and set gain to 0dB
+    {AIC3204_LOL_DRV_GAIN, 0x00},
+    // Unmute LOR and set gain to 0dB
+    {AIC3204_LOR_DRV_GAIN, 0x00},
+    // Power up HPL and HPR, LOL and LOR drivers
+    {AIC3204_OP_PWR_CTRL, 0x3C},
+};
+
 void AIC3204::setup() {
-  // Set register page to 0
-  ERROR_CHECK(this->write_byte(AIC3204_PAGE_CTRL, 0x00), "Set page 0 failed");
-  // Initiate SW reset (PLL is powered off as part of reset)
-  ERROR_CHECK(this->write_byte(AIC3204_SW_RST, 0x01), "Software reset failed");
-  // *** Program clock settings ***
-  // Default is CODEC_CLKIN is from MCLK pin. Don't need to change this.
-  // MDAC*NDAC*FOSR*48Khz = mClk (24.576 MHz when the XMOS is expecting 48kHz audio)
-  // (See page 51 of https://www.ti.com/lit/ml/slaa557/slaa557.pdf)
-  // We do need MDAC*DOSR/32 >= the resource compute level for the processing block
-  // So here 2*128/32 = 8, which is equal to processing block 1 's resource compute
-  // See page 5 of https://www.ti.com/lit/an/slaa404c/slaa404c.pdf for the workflow
-  // for determining these settings.
-
-  // Power up NDAC and set to 2
-  ERROR_CHECK(this->write_byte(AIC3204_NDAC, 0x82), "Set NDAC failed");
-  // Power up MDAC and set to 2
-  ERROR_CHECK(this->write_byte(AIC3204_MDAC, 0x82), "Set MDAC failed");
-  // Program DOSR = 128
-  ERROR_CHECK(this->write_byte(AIC3204_DOSR, 0x80), "Set DOSR failed");
-  // Set Audio Interface Config: I2S, 32 bits, DOUT always driving
-  ERROR_CHECK(this->write_byte(AIC3204_CODEC_IF, 0x30), "Set CODEC_IF failed");
-  // For I2S Firmware only, set SCLK/MFP3 pin as Audio Data In
-  ERROR_CHECK(this->write_byte(AIC3204_SCLK_MFP3, 0x02), "Set SCLK/MFP3 failed");
-  ERROR_CHECK(this->write_byte(AIC3204_AUDIO_IF_4, 0x01), "Set AUDIO_IF_4 failed");
-  ERROR_CHECK(this->write_byte(AIC3204_AUDIO_IF_5, 0x01), "Set AUDIO_IF_5 failed");
-  // Program the DAC processing block to be used - PRB_P1
-  ERROR_CHECK(this->write_byte(AIC3204_DAC_SIG_PROC, 0x01), "Set DAC_SIG_PROC failed");
-
-  // *** Select Page 1 ***
-  ERROR_CHECK(this->write_byte(AIC3204_PAGE_CTRL, 0x01), "Set page 1 failed");
-  // Enable the internal AVDD_LDO:
-  ERROR_CHECK(this->write_byte(AIC3204_LDO_CTRL, 0x09), "Set LDO_CTRL failed");
-  // *** Program Analog Blocks ***
-  // Disable Internal Crude AVdd in presence of external AVdd supply or before powering up internal AVdd LDO
-  ERROR_CHECK(this->write_byte(AIC3204_PWR_CFG, 0x08), "Set PWR_CFG failed");
-  // Enable Master Analog Power Control
-  ERROR_CHECK(this->write_byte(AIC3204_LDO_CTRL, 0x01), "Set LDO_CTRL failed");
-  // Page 125: Common mode control register, set d6 to 1 to make the full chip common mode = 0.75 v
-  // We are using the internal AVdd regulator with a nominal output of 1.72 V (see LDO_CTRL_REGISTER on page 123)
-  // Page 86 says to only set the common mode voltage to 0.9 v if AVdd >= 1.8... but it isn't on our hardware
-  // We also adjust the HPL and HPR gains to -2dB gian later in this config flow compensate (see page 47)
-  // (All pages refer to the TLV320AIC3204 Application Reference Guide)
-  ERROR_CHECK(this->write_byte(AIC3204_CM_CTRL, 0x40), "Set CM_CTRL failed");
-  // *** Set PowerTune Modes ***
-  // Set the Left & Right DAC PowerTune mode to PTM_P3/4. Use Class-AB driver.
-  ERROR_CHECK(this->write_byte(AIC3204_PLAY_CFG1, 0x00), "Set PLAY_CFG1 failed");
-  ERROR_CHECK(this->write_byte(AIC3204_PLAY_CFG2, 0x00), "Set PLAY_CFG2 failed");
-  // Set the REF charging time to 40ms
-  ERROR_CHECK(this->write_byte(AIC3204_REF_STARTUP, 0x01), "Set REF_STARTUP failed");
-  // HP soft stepping settings for optimal pop performance at power up
-  // Rpop used is 6k with N = 6 and soft step = 20usec. This should work with 47uF coupling
-  // capacitor. Can try N=5,6 or 7 time constants as well. Trade-off delay vs “pop” sound.
-  ERROR_CHECK(this->write_byte(AIC3204_HP_START, 0x25), "Set HP_START failed");
-  // Route Left DAC to HPL
-  ERROR_CHECK(this->write_byte(AIC3204_HPL_ROUTE, 0x08), "Set HPL_ROUTE failed");
-  // Route Right DAC to HPR
-  ERROR_CHECK(this->write_byte(AIC3204_HPR_ROUTE, 0x08), "Set HPR_ROUTE failed");
-  // Route Left DAC to LOL
-  ERROR_CHECK(this->write_byte(AIC3204_LOL_ROUTE, 0x08), "Set LOL_ROUTE failed");
-  // Route Right DAC to LOR
-  ERROR_CHECK(this->write_byte(AIC3204_LOR_ROUTE, 0x08), "Set LOR_ROUTE failed");
-
-  // Unmute HPL and set gain to -2dB (see comment before configuring the AIC3204_CM_CTRL register)
-  ERROR_CHECK(this->write_byte(AIC3204_HPL_GAIN, 0x3e), "Set HPL_GAIN failed");
-  // Unmute HPR and set gain to -2dB (see comment before configuring the AIC3204_CM_CTRL register)
-  ERROR_CHECK(this->write_byte(AIC3204_HPR_GAIN, 0x3e), "Set HPR_GAIN failed");
-  // Unmute LOL and set gain to 0dB
-  ERROR_CHECK(this->write_byte(AIC3204_LOL_DRV_GAIN, 0x00), "Set LOL_DRV_GAIN failed");
-  // Unmute LOR and set gain to 0dB
-  ERROR_CHECK(this->write_byte(AIC3204_LOR_DRV_GAIN, 0x00), "Set LOR_DRV_GAIN failed");
-
-  // Power up HPL and HPR, LOL and LOR drivers
-  ERROR_CHECK(this->write_byte(AIC3204_OP_PWR_CTRL, 0x3C), "Set OP_PWR_CTRL failed");
+  ERROR_CHECK(this->write_registers(AIC3204_INIT), "Failed to initialize");

  // Wait for 2.5 sec for soft stepping to take effect before attempting power-up
  this->set_timeout(2500, [this]() {
@@ -174,14 +174,10 @@ def _register_provisioning_source(config: ConfigType) -> ConfigType:

 CONF_SUPPORTS_RESPONSE = "supports_response"

-# Enum values in api::enums namespace
-enums_ns = api_ns.namespace("enums")
-SUPPORTS_RESPONSE_OPTIONS = {
-    "none": enums_ns.SUPPORTS_RESPONSE_NONE,
-    "optional": enums_ns.SUPPORTS_RESPONSE_OPTIONAL,
-    "only": enums_ns.SUPPORTS_RESPONSE_ONLY,
-    "status": enums_ns.SUPPORTS_RESPONSE_STATUS,
-}
+SupportsResponseType = api_ns.namespace("enums").enum("SupportsResponseType")
+SUPPORTS_RESPONSE_OPTIONS = SupportsResponseType.options(
+    "none", "optional", "only", "status", prefix="SUPPORTS_RESPONSE_"
+)


 def _auto_detect_supports_response(config: ConfigType) -> ConfigType:
@@ -54,7 +54,8 @@ static const char AS7341_NAME[] PROGMEM = "AS7341";
 static constexpr uint8_t AS7341_ADC_SLOTS = 6;
 static constexpr uint8_t AS7341_SMUX_LEN = 20;
 static constexpr uint8_t AS7341_SMUX_STEPS = 2;
-static const RegValue AS7341_INIT[] PROGMEM = {{0x70, 0x00}};  // CONFIG: SPM mode, INT_SEL and LED_SEL cleared
+static constexpr i2c::I2CRegValue AS7341_INIT[] PROGMEM = {
+    {0x70, 0x00}};  // CONFIG: SPM mode, INT_SEL and LED_SEL cleared
 static const uint8_t AS7341_SMUX[] PROGMEM = {
    0x30, 0x01, 0x00, 0x00, 0x00, 0x42, 0x00, 0x00, 0x50, 0x00,  // step 0: F1 to F4, NIR, Clear
    0x00, 0x00, 0x20, 0x04, 0x00, 0x30, 0x01, 0x50, 0x00, 0x06,  // step 0, continued
@@ -150,8 +151,8 @@ static constexpr uint8_t AS7343_ADC_SLOTS = 18;
 static constexpr uint8_t AS7343_SMUX_LEN = 10;
 static const char TCS3448_NAME[] PROGMEM = "TCS3448";
 // CFG6, FD_CFG0, CFG10, CFG8, CFG20 (auto_smux, 18 channels in 3 cycles), AGC_GAIN_MAX, FD_TIME_1, FD_TIME_2
-static const RegValue AS7343_INIT[] PROGMEM = {{0xF5, 0x00}, {0xDF, 0xA1}, {0x65, 0xF2}, {0xC9, 0xC8},
-                                               {0xD6, 0x62}, {0xD7, 0x99}, {0xE0, 0x64}, {0xE2, 0x21}};
+static constexpr i2c::I2CRegValue AS7343_INIT[] PROGMEM = {{0xF5, 0x00}, {0xDF, 0xA1}, {0x65, 0xF2}, {0xC9, 0xC8},
+                                                           {0xD6, 0x62}, {0xD7, 0x99}, {0xE0, 0x64}, {0xE2, 0x21}};
 static const uint8_t AS7343_SMUX[] PROGMEM = {0x00, 0x04, 0x65, 0x02, 0x00, 0x05, 0x00, 0x01, 0x00, 0x30,
                                              0x00, 0x00, 0x60, 0x20, 0x04, 0x50, 0x03, 0x00, 0x01, 0x05,
                                              0x05, 0x00, 0x60, 0x00, 0x30, 0x00, 0x40, 0x10, 0x20, 0x00};
@@ -230,7 +231,7 @@ static constexpr ChipInfo as7343_chip(const char *name) {
      .gain_correction = AS7343_GAIN_CORRECTION,
      .contributions = AS7343_CONTRIBUTIONS,
      .tristimulus = AS7343_TRISTIMULUS,
-      .init_count = sizeof(AS7343_INIT) / sizeof(RegValue),
+      .init_count = sizeof(AS7343_INIT) / sizeof(i2c::I2CRegValue),
      .astep_reg = 0xD4,
      .cfg0_reg = 0xBF,
      .cfg1_reg = 0xC6,
@@ -298,9 +299,9 @@ void AS734XComponent::setup() {
    this->mark_failed(LOG_STR("Wrong chip ID"));
    return;
  }
-  const RegValue *init = pgm(chip->init);
+  const i2c::I2CRegValue *init = pgm(chip->init);
  for (uint8_t i = 0, n = pgm(chip->init_count); ok && i < n; i++) {
-    RegValue rv;
+    i2c::I2CRegValue rv;
    progmem_memcpy(&rv, &init[i], sizeof(rv));
    ok = this->select_bank_(rv.reg) && this->write_byte(rv.reg, rv.value);
  }
@@ -68,15 +68,10 @@ struct ChannelTristimulus {
  float z;
 };

-struct RegValue {
-  uint8_t reg;
-  uint8_t value;
-};
-
 /// Per-chip constants, stored in flash. The pointed-to tables are in flash too.
 struct ChipInfo {
  const char *name;
-  const RegValue *init;                      // written in order; the bank is selected per register address
+  const i2c::I2CRegValue *init;              // written in order; the bank is selected per register address
  const uint8_t *smux;                       // AS7341: SMUX RAM image per step; AS7343: the three chain images
  const uint8_t *readout;                    // per step, the ADC slot of each band (0xFF: not read in this step)
  const uint16_t *wavelengths;               // per band, WIDEBAND_NM for clear and ABSENT_NM for a missing band
@@ -16,13 +16,7 @@ constexpr static const uint8_t AXS_READ_TOUCHPAD[11] = {0xb5, 0xab, 0xa5, 0x5a,
  }

 void AXS15231Touchscreen::setup() {
-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->reset_pin_->digital_write(false);
-    delay(5);
-    this->reset_pin_->digital_write(true);
-    delay(10);
-  }
+  pulse_reset(this->reset_pin_, {.low_ms = 5, .high_after_ms = 10});
  if (this->interrupt_pin_ != nullptr) {
    this->interrupt_pin_->pin_mode(gpio::FLAG_INPUT);
    this->interrupt_pin_->setup();
@@ -78,3 +78,7 @@ async def pin_to_code(config: ConfigType) -> MockObj:
 # Called by writer.py; delegates to the shared libretiny implementation.
 def copy_files() -> None:
    libretiny.copy_files()
+
+
+# Called by the OTA upload; the shared libretiny implementation.
+ota_image = libretiny.device_ota_image
@@ -1,23 +1,11 @@
-from collections.abc import Callable, Coroutine
-import functools
+from collections.abc import Coroutine
 from typing import Any

 from esphome import automation
 from esphome.automation import maybe_simple_id
 import esphome.codegen as cg
-from esphome.components import ble_device_base, bluetooth_connection
-from esphome.components.ble_device_base import (
-    BT_UUID16_FORMAT as bt_uuid16_format,
-    BT_UUID32_FORMAT as bt_uuid32_format,
-    BT_UUID128_FORMAT as bt_uuid128_format,
-    as_hex,
-    as_reversed_hex_array,
-    bt_uuid,
-)
-from esphome.config_helpers import (
-    filter_source_files_from_platform,
-    frameworks_for_platforms,
-)
+from esphome.components import esp32_ble, esp32_ble_client, esp32_ble_tracker
+from esphome.components.esp32_ble import BTLoggers
 import esphome.config_validation as cv
 from esphome.const import (
    CONF_CHARACTERISTIC_UUID,
@@ -30,55 +18,15 @@ from esphome.const import (
    CONF_SERVICE_UUID,
    CONF_TRIGGER_ID,
    CONF_VALUE,
-    PLATFORM_ESP32,
-    PlatformFramework,
 )
-from esphome.core import CORE, ID
-from esphome.enum import StrEnum
-from esphome.schema_extractors import SCHEMA_EXTRACT, schema_extractor
+from esphome.core import ID
 from esphome.types import ConfigType

-# The esp32 BLE stack (esp32_ble, esp32_ble_tracker) is imported lazily inside
-# the esp32 schema/codegen arms: importing those modules registers esp32-only
-# automations as a side effect, which must not leak into the neutral
-# platforms' registries (the bluetooth_proxy pattern).
-
-
-def _legacy_engine() -> bool:
-    """True when the build uses the legacy raw-gattc engine - one line to
-    flip when esp32 moves to the neutral engine (with
-    USE_BLE_CLIENT_LEGACY_ENGINE in _to_code_esp32)."""
-    return CORE.is_esp32
-
-
-def AUTO_LOAD() -> list[str]:
-    """The engine's closure per platform: the legacy esp32 engine builds on
-    esp32_ble_client plus bluetooth_connection (the shared service-table
-    materializer; its sources compile empty in builds without a neutral
-    node), the neutral engine on the bluetooth_connection backend. The
-    platform-less arm is the union for manifest-resolving tooling."""
-    if _legacy_engine() or CORE.target_platform is None:
-        return ["bluetooth_connection", "esp32_ble_client"]
-    return ["bluetooth_connection"]
-
-
+AUTO_LOAD = ["esp32_ble_client"]
 CODEOWNERS = ["@buxtronix", "@clydebarrow"]
+DEPENDENCIES = ["esp32_ble_tracker"]
 DOMAIN = "ble_client"

-FILTER_SOURCE_FILES = filter_source_files_from_platform(
-    {
-        "ble_client.cpp": {
-            PlatformFramework.ESP32_ARDUINO,
-            PlatformFramework.ESP32_IDF,
-        },
-        # Every framework of every non-esp32 registry platform: a platform
-        # that validates the neutral arm must also compile the neutral engine.
-        "ble_client_gatt.cpp": frameworks_for_platforms(
-            set(bluetooth_connection.GATT_CLIENT_PLATFORMS) - {PLATFORM_ESP32}
-        ),
-    }
-)
-
 CONF_DESCRIPTOR_UUID = "descriptor_uuid"
 CONF_ON_NOTIFY = "on_notify"

@@ -114,12 +62,16 @@ def notify_from_on_notify(config: ConfigType) -> ConfigType:


 ble_client_ns = cg.esphome_ns.namespace("ble_client")
-# One codegen class for both engines: the exclusively-gated headers resolve
-# the name to exactly one C++ definition per build.
-BLEClient = ble_client_ns.class_("BLEClient", cg.Component)
+BLEClient = ble_client_ns.class_("BLEClient", esp32_ble_client.BLEClientBase)
 BLEClientNode = ble_client_ns.class_("BLEClientNode")
 BLEClientNodeConstRef = BLEClientNode.operator("ref").operator("const")
 # Triggers
+BLEClientConnectTrigger = ble_client_ns.class_(
+    "BLEClientConnectTrigger", automation.Trigger.template(BLEClientNodeConstRef)
+)
+BLEClientDisconnectTrigger = ble_client_ns.class_(
+    "BLEClientDisconnectTrigger", automation.Trigger.template(BLEClientNodeConstRef)
+)
 BLEClientPasskeyRequestTrigger = ble_client_ns.class_(
    "BLEClientPasskeyRequestTrigger", automation.Trigger.template(BLEClientNodeConstRef)
 )
@@ -157,175 +109,62 @@ CONF_AUTO_CONNECT = "auto_connect"

 MULTI_CONF = True

-# Keys shared by both engines' schemas.
-_COMMON_SCHEMA = cv.Schema(
-    {
-        cv.GenerateID(): cv.declare_id(BLEClient),
-        cv.Required(CONF_MAC_ADDRESS): cv.mac_address,
-        cv.Optional(CONF_AUTO_CONNECT, default=True): cv.boolean,
-        cv.Optional(CONF_ON_CONNECT): automation.validate_automation({}),
-        cv.Optional(CONF_ON_DISCONNECT): automation.validate_automation({}),
-    }
-).extend(cv.COMPONENT_SCHEMA)
-
-# Both engines register these on the client; the Bluedroid-security triggers below stay trigger classes
-_CALLBACK_AUTOMATIONS = (
-    automation.CallbackAutomation(CONF_ON_CONNECT, "add_on_connect_callback"),
-    automation.CallbackAutomation(CONF_ON_DISCONNECT, "add_on_disconnect_callback"),
+CONFIG_SCHEMA = cv.All(
+    cv.Schema(
+        {
+            cv.GenerateID(): cv.declare_id(BLEClient),
+            cv.Required(CONF_MAC_ADDRESS): cv.mac_address,
+            cv.Optional(CONF_NAME): cv.string,
+            cv.Optional(CONF_AUTO_CONNECT, default=True): cv.boolean,
+            cv.Optional(CONF_ON_CONNECT): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
+                        BLEClientConnectTrigger
+                    ),
+                }
+            ),
+            cv.Optional(CONF_ON_DISCONNECT): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
+                        BLEClientDisconnectTrigger
+                    ),
+                }
+            ),
+            cv.Optional(CONF_ON_PASSKEY_REQUEST): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
+                        BLEClientPasskeyRequestTrigger
+                    ),
+                }
+            ),
+            cv.Optional(CONF_ON_PASSKEY_NOTIFICATION): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
+                        BLEClientPasskeyNotificationTrigger
+                    ),
+                }
+            ),
+            cv.Optional(
+                CONF_ON_NUMERIC_COMPARISON_REQUEST
+            ): automation.validate_automation(
+                {
+                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
+                        BLEClientNumericComparisonRequestTrigger
+                    ),
+                }
+            ),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA),
+    esp32_ble.consume_connection_slots(1, "ble_client"),
 )

-
-@functools.cache
-def _esp32_config_schema() -> cv.All:
-    """The legacy engine's schema, byte-compatible with what esp32 always had
-    (including the Bluedroid security triggers)."""
-    from esphome.components import esp32_ble_tracker
-
-    return cv.All(
-        _COMMON_SCHEMA.extend(
-            {
-                # Accepted-but-unused legacy key; not propagated to the
-                # neutral schema.
-                cv.Optional(CONF_NAME): cv.string,
-                cv.Optional(CONF_ON_PASSKEY_REQUEST): automation.validate_automation(
-                    {
-                        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                            BLEClientPasskeyRequestTrigger
-                        ),
-                    }
-                ),
-                cv.Optional(
-                    CONF_ON_PASSKEY_NOTIFICATION
-                ): automation.validate_automation(
-                    {
-                        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                            BLEClientPasskeyNotificationTrigger
-                        ),
-                    }
-                ),
-                cv.Optional(
-                    CONF_ON_NUMERIC_COMPARISON_REQUEST
-                ): automation.validate_automation(
-                    {
-                        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                            BLEClientNumericComparisonRequestTrigger
-                        ),
-                    }
-                ),
-            }
-        ).extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA),
-        bluetooth_connection.consume_gatt_slot("ble_client"),
-    )
-
-
-@functools.cache
-def _gatt_config_schema(platform: str) -> cv.All:
-    """The neutral engine's schema: the shared keys plus the hub reference
-    (parsed-advertisement sightings) and the GATT backend declaration.
-    Keyed by platform - the backend fragment differs per platform."""
-    return cv.All(
-        _COMMON_SCHEMA.extend(ble_device_base.BLE_DEVICE_SCHEMA).extend(
-            bluetooth_connection.gatt_client_schema(platform)
-        ),
-        bluetooth_connection.consume_gatt_slot("ble_client"),
-    )
-
-
-@schema_extractor("schema")
-def _validate_platform(config: ConfigType) -> ConfigType:
-    if config is SCHEMA_EXTRACT:
-        # Deliberate gap (the bluetooth_proxy pattern): the dumper gets only
-        # this shape, so the neutral arm's ble_hub_id is absent from editor
-        # schemas and the esp32-only keys are advertised on every platform.
-        # The language-schema dumper runs without a platform; expose the
-        # esp32 (legacy-engine) shape.
-        return _esp32_config_schema()
-    if _legacy_engine():
-        return _esp32_config_schema()(config)
-    if CORE.target_platform in bluetooth_connection.GATT_CLIENT_PLATFORMS:
-        return _gatt_config_schema(CORE.target_platform)(config)
-    raise cv.Invalid(f"ble_client is not supported on {CORE.target_platform}")
-
-
-CONFIG_SCHEMA = _validate_platform
-
 CONF_BLE_CLIENT_ID = "ble_client_id"

-
-class BLEClientFeatures(StrEnum):
-    """Per-platform engine capabilities consumers declare against."""
-
-    # The platform-neutral node interface (on_connected/table + completion
-    # callbacks) - every platform with a ble_client engine.
-    GATT_NODE = "gatt_node"
-    # The raw esp32 GATT client event stream (gattc/gap handlers,
-    # node_state) - the legacy engine only.
-    RAW_GATTC = "raw_gattc"
-    # Pairing dialog replies and bond management (Bluedroid GAP/SMP).
-    SECURITY = "security"
-
-
-def _engine_features() -> set[BLEClientFeatures]:
-    """Features the validated platform's engine provides."""
-    if _legacy_engine():
-        return {
-            BLEClientFeatures.GATT_NODE,
-            BLEClientFeatures.RAW_GATTC,
-            BLEClientFeatures.SECURITY,
-        }
-    if CORE.target_platform in bluetooth_connection.GATT_CLIENT_PLATFORMS:
-        return {BLEClientFeatures.GATT_NODE}
-    return set()
-
-
-def requires_feature(
-    feature: BLEClientFeatures, description: str
-) -> Callable[[Any], Any]:
-    """Validator gating a consumer to platforms whose engine provides
-    `feature`, naming the missing capability in the error."""
-
-    def validator(value: Any) -> Any:
-        features = _engine_features()
-        if feature not in features:
-            available = (
-                f"; this platform's engine provides: {', '.join(sorted(features))}"
-                if features
-                else ""
-            )
-            raise cv.Invalid(
-                f"{description} requires the ble_client '{feature}' feature, "
-                f"which {CORE.target_platform} does not provide{available}"
-            )
-        return value
-
-    return validator
-
-
-# The one choke point for every node component still on the raw esp32 event
-# stream; migrating to the neutral interface (NODE_BLE_CLIENT_SCHEMA +
-# register_gatt_node) lifts it.
-_legacy_engine_only = requires_feature(
-    BLEClientFeatures.RAW_GATTC,
-    "This component drives the raw ESP32 GATT client events and has not "
-    "been migrated to the platform-neutral node interface yet; it",
-)
-
 BLE_CLIENT_SCHEMA = cv.Schema(
    {
-        cv.GenerateID(CONF_BLE_CLIENT_ID): cv.All(
-            cv.use_id(BLEClient), _legacy_engine_only
-        ),
-    }
-)
-
-# For node components on the neutral interface: valid wherever ble_client
-# itself is.
-NODE_BLE_CLIENT_SCHEMA = cv.Schema(
-    {
-        cv.GenerateID(CONF_BLE_CLIENT_ID): cv.All(
-            cv.use_id(BLEClient),
-            requires_feature(BLEClientFeatures.GATT_NODE, "This component"),
-        ),
+        cv.GenerateID(CONF_BLE_CLIENT_ID): cv.use_id(BLEClient),
    }
 )

@@ -335,26 +174,6 @@ async def register_ble_node(var, config):
    cg.add(parent.register_ble_node(var))


-def _request_gatt_node_build() -> None:
-    """Node storage and the one define meaning "the neutral node surface is
-    compiled in", plus the esp32 bridge/materializer defines."""
-    _request_node_slot()
-    cg.add_define("USE_BLE_CLIENT_GATT_NODES")
-    if _legacy_engine():
-        # Deliberately not ble_device_base.request_gatt_client(): that would
-        # claim a phantom backend slot on combined proxy builds.
-        cg.add_define("USE_BLE_GATT_CLIENT")
-        cg.add_define("USE_BLE_GATT_BACKEND_BLUEDROID")
-        cg.add_define("USE_BLUEDROID_GATT_SERVICE_TABLE")
-
-
-async def register_gatt_node(var, config):
-    """Register a node on the platform-neutral interface (both engines)."""
-    parent = await cg.get_variable(config[CONF_BLE_CLIENT_ID])
-    _request_gatt_node_build()
-    cg.add(parent.register_gatt_node(var))
-
-
 def new_ble_node_component(
    config: ConfigType, *args: Any
 ) -> Coroutine[Any, Any, cg.MockObj]:
@@ -365,8 +184,8 @@ def new_ble_node_component(
 BLE_WRITE_ACTION_SCHEMA = cv.Schema(
    {
        cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
-        cv.Required(CONF_SERVICE_UUID): bt_uuid,
-        cv.Required(CONF_CHARACTERISTIC_UUID): bt_uuid,
+        cv.Required(CONF_SERVICE_UUID): esp32_ble_tracker.bt_uuid,
+        cv.Required(CONF_CHARACTERISTIC_UUID): esp32_ble_tracker.bt_uuid,
        cv.Required(CONF_VALUE): cv.templatable(cv.ensure_list(cv.hex_uint8_t)),
    }
 )
@@ -377,34 +196,25 @@ BLE_CONNECT_ACTION_SCHEMA = maybe_simple_id(
    }
 )

-BLE_NUMERIC_COMPARISON_REPLY_ACTION_SCHEMA = cv.All(
-    requires_feature(BLEClientFeatures.SECURITY, "This action"),
-    cv.Schema(
-        {
-            cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
-            cv.Required(CONF_ACCEPT): cv.templatable(cv.boolean),
-        }
-    ),
+BLE_NUMERIC_COMPARISON_REPLY_ACTION_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
+        cv.Required(CONF_ACCEPT): cv.templatable(cv.boolean),
+    }
 )

-BLE_PASSKEY_REPLY_ACTION_SCHEMA = cv.All(
-    requires_feature(BLEClientFeatures.SECURITY, "This action"),
-    cv.Schema(
-        {
-            cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
-            cv.Required(CONF_PASSKEY): cv.templatable(cv.int_range(min=0, max=999999)),
-        }
-    ),
+BLE_PASSKEY_REPLY_ACTION_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
+        cv.Required(CONF_PASSKEY): cv.templatable(cv.int_range(min=0, max=999999)),
+    }
 )


-BLE_REMOVE_BOND_ACTION_SCHEMA = cv.All(
-    requires_feature(BLEClientFeatures.SECURITY, "This action"),
-    cv.Schema(
-        {
-            cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
-        }
-    ),
+BLE_REMOVE_BOND_ACTION_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_ID): cv.use_id(BLEClient),
+    }
 )


@@ -432,8 +242,6 @@ automation.register_simple_action(
 )
 async def ble_write_to_code(config, action_id, template_arg, args):
    parent = await cg.get_variable(config[CONF_ID])
-    # The action registers itself as a neutral node in its constructor.
-    _request_gatt_node_build()
    var = cg.new_Pvariable(action_id, template_arg, parent)

    value = config[CONF_VALUE]
@@ -448,20 +256,38 @@ async def ble_write_to_code(config, action_id, template_arg, args):
        arr = cg.static_const_array(arr_id, cg.ArrayInitializer(*value))
        cg.add(var.set_value_simple(arr, len(value)))

-    if len(config[CONF_SERVICE_UUID]) == len(bt_uuid16_format):
-        cg.add(var.set_service_uuid16(as_hex(config[CONF_SERVICE_UUID])))
-    elif len(config[CONF_SERVICE_UUID]) == len(bt_uuid32_format):
-        cg.add(var.set_service_uuid32(as_hex(config[CONF_SERVICE_UUID])))
-    elif len(config[CONF_SERVICE_UUID]) == len(bt_uuid128_format):
-        uuid128 = as_reversed_hex_array(config[CONF_SERVICE_UUID])
+    if len(config[CONF_SERVICE_UUID]) == len(esp32_ble_tracker.bt_uuid16_format):
+        cg.add(
+            var.set_service_uuid16(esp32_ble_tracker.as_hex(config[CONF_SERVICE_UUID]))
+        )
+    elif len(config[CONF_SERVICE_UUID]) == len(esp32_ble_tracker.bt_uuid32_format):
+        cg.add(
+            var.set_service_uuid32(esp32_ble_tracker.as_hex(config[CONF_SERVICE_UUID]))
+        )
+    elif len(config[CONF_SERVICE_UUID]) == len(esp32_ble_tracker.bt_uuid128_format):
+        uuid128 = esp32_ble_tracker.as_reversed_hex_array(config[CONF_SERVICE_UUID])
        cg.add(var.set_service_uuid128(uuid128))

-    if len(config[CONF_CHARACTERISTIC_UUID]) == len(bt_uuid16_format):
-        cg.add(var.set_char_uuid16(as_hex(config[CONF_CHARACTERISTIC_UUID])))
-    elif len(config[CONF_CHARACTERISTIC_UUID]) == len(bt_uuid32_format):
-        cg.add(var.set_char_uuid32(as_hex(config[CONF_CHARACTERISTIC_UUID])))
-    elif len(config[CONF_CHARACTERISTIC_UUID]) == len(bt_uuid128_format):
-        uuid128 = as_reversed_hex_array(config[CONF_CHARACTERISTIC_UUID])
+    if len(config[CONF_CHARACTERISTIC_UUID]) == len(esp32_ble_tracker.bt_uuid16_format):
+        cg.add(
+            var.set_char_uuid16(
+                esp32_ble_tracker.as_hex(config[CONF_CHARACTERISTIC_UUID])
+            )
+        )
+    elif len(config[CONF_CHARACTERISTIC_UUID]) == len(
+        esp32_ble_tracker.bt_uuid32_format
+    ):
+        cg.add(
+            var.set_char_uuid32(
+                esp32_ble_tracker.as_hex(config[CONF_CHARACTERISTIC_UUID])
+            )
+        )
+    elif len(config[CONF_CHARACTERISTIC_UUID]) == len(
+        esp32_ble_tracker.bt_uuid128_format
+    ):
+        uuid128 = esp32_ble_tracker.as_reversed_hex_array(
+            config[CONF_CHARACTERISTIC_UUID]
+        )
        cg.add(var.set_char_uuid128(uuid128))

    return var
@@ -515,48 +341,22 @@ automation.register_simple_action(
 )


-async def _to_code_esp32(config: ConfigType) -> cg.MockObj:
-    from esphome.components import esp32_ble, esp32_ble_tracker
-    from esphome.components.esp32_ble import BTLoggers
-
+async def to_code(config):
    # Register the loggers this component needs
    esp32_ble.register_bt_logger(BTLoggers.GATT, BTLoggers.SMP)
    cg.add_define("USE_ESP32_BLE_UUID")
-    cg.add_define("USE_BLE_CLIENT_LEGACY_ENGINE")

    var = cg.new_Pvariable(config[CONF_ID])
    await cg.register_component(var, config)
    await esp32_ble_tracker.register_client(var, config)
-    return var
-
-
-# Sizes the neutral client's node storage; the client itself requests a
-# baseline slot so the define exists on every build that compiles the engine.
-_request_node_slot = cg.slot_counter("ESPHOME_BLE_CLIENT_MAX_NODES")
-
-
-async def _to_code_gatt(config: ConfigType) -> cg.MockObj:
-    # The engine always carries the node surface (the client itself owns the
-    # baseline slot).
-    _request_gatt_node_build()
-    backend = await bluetooth_connection.new_gatt_backend(config)
-    var = cg.new_Pvariable(config[CONF_ID])
-    await cg.register_component(var, config)
-    cg.add(var.set_backend(backend))
-    # Sighting-gated connects: the client listens for the peer's parsed
-    # advertisements through the hub.
-    await ble_device_base.register_ble_device(var, config)
-    return var
-
-
-async def to_code(config: ConfigType) -> None:
-    if _legacy_engine():
-        var = await _to_code_esp32(config)
-    else:
-        var = await _to_code_gatt(config)
    cg.add(var.set_address(config[CONF_MAC_ADDRESS].as_hex))
    cg.add(var.set_auto_connect(config[CONF_AUTO_CONNECT]))
-    await automation.build_callback_automations(var, config, _CALLBACK_AUTOMATIONS)
+    for conf in config.get(CONF_ON_CONNECT, []):
+        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
+        await automation.build_automation(trigger, [], conf)
+    for conf in config.get(CONF_ON_DISCONNECT, []):
+        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
+        await automation.build_automation(trigger, [], conf)
    for conf in config.get(CONF_ON_PASSKEY_REQUEST, []):
        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
        await automation.build_automation(trigger, [], conf)
@@ -0,0 +1,11 @@
+#ifdef USE_ESP32
+
+#include "automation.h"
+
+namespace esphome::ble_client {
+
+const char *const Automation::TAG = "ble_client.automation";  // NOLINT: ble_client never builds for ESP8266
+
+}  // namespace esphome::ble_client
+
+#endif
@@ -1,14 +1,27 @@
 #pragma once

-#include "esphome/core/defines.h"
+#ifdef USE_ESP32

-#ifdef USE_BLE_CLIENT_LEGACY_ENGINE
+#include <utility>
+#include <vector>

 #include "esphome/core/automation.h"
 #include "esphome/components/ble_client/ble_client.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+
+// Maximum bytes to log in hex format for BLE writes (many logging buffers are 256 chars)
+static constexpr size_t BLE_WRITE_MAX_LOG_BYTES = 64;

 namespace esphome::ble_client {

+// placeholder class for static TAG .
+class Automation {
+ public:
+  // could be made inline with C++17
+  static const char *const TAG;
+};
+
 // Base for nodes that never read the parent's services.
 // The parent releases its services only once every node reports Established, so a node that never
 // reports it keeps that memory allocated for the life of the connection.
@@ -26,6 +39,45 @@ class BLEClientServicelessNode : public BLEClientNode {
  virtual void on_gattc_event(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param) {}
 };

+// implement on_connect automation.
+class BLEClientConnectTrigger final : public Trigger<>, public BLEClientNode {
+ public:
+  explicit BLEClientConnectTrigger(BLEClient *parent) { parent->register_ble_node(this); }
+  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 {
+    if (event == ESP_GATTC_SEARCH_CMPL_EVT) {
+      this->node_state = espbt::ClientState::ESTABLISHED;
+      this->trigger();
+    }
+  }
+};
+
+// on_disconnect automation
+class BLEClientDisconnectTrigger final : public Trigger<>, public BLEClientNode {
+ public:
+  explicit BLEClientDisconnectTrigger(BLEClient *parent) { parent->register_ble_node(this); }
+  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 {
+    // test for CLOSE and not DISCONNECT - DISCONNECT can occur even if no virtual connection (OPEN event) occurred.
+    // So this will not trigger unless a complete open has previously succeeded.
+    switch (event) {
+      case ESP_GATTC_SEARCH_CMPL_EVT: {
+        this->node_state = espbt::ClientState::ESTABLISHED;
+        break;
+      }
+      case ESP_GATTC_CLOSE_EVT: {
+        this->trigger();
+        break;
+      }
+      default: {
+        break;
+      }
+    }
+  }
+};
+
 class BLEClientPasskeyRequestTrigger final : public Trigger<>, public BLEClientServicelessNode {
 public:
  explicit BLEClientPasskeyRequestTrigger(BLEClient *parent) { parent->register_ble_node(this); }
@@ -58,6 +110,144 @@ class BLEClientNumericComparisonRequestTrigger final : public Trigger<uint32_t>,
  }
 };

+// implement the ble_client.ble_write action.
+template<typename... Ts> class BLEClientWriteAction final : public Action<Ts...>, public BLEClientNode {
+ public:
+  BLEClientWriteAction(BLEClient *ble_client) {
+    ble_client->register_ble_node(this);
+    ble_client_ = ble_client;
+  }
+
+  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); }
+
+  void set_char_uuid16(uint16_t uuid) { this->char_uuid_ = espbt::ESPBTUUID::from_uint16(uuid); }
+  void set_char_uuid32(uint32_t uuid) { this->char_uuid_ = espbt::ESPBTUUID::from_uint32(uuid); }
+  void set_char_uuid128(uint8_t *uuid) { this->char_uuid_ = espbt::ESPBTUUID::from_raw(uuid); }
+
+  void set_value_template(std::vector<uint8_t> (*func)(Ts...)) {
+    this->value_.func = func;
+    this->len_ = -1;  // Sentinel value indicates template mode
+  }
+
+  // Store pointer to static data in flash (no RAM copy)
+  void set_value_simple(const uint8_t *data, size_t len) {
+    this->value_.data = data;
+    this->len_ = len;  // Length >= 0 indicates static mode
+  }
+
+  void play(const Ts &...x) override {}
+
+  void play_complex(const Ts &...x) override {
+    this->num_running_++;
+    this->var_ = std::make_tuple(x...);
+
+    bool result;
+    if (this->len_ >= 0) {
+      // Static mode: write directly from flash pointer
+      result = this->write(this->value_.data, this->len_);
+    } else {
+      // Template mode: call function and write the vector
+      std::vector<uint8_t> value = this->value_.func(x...);
+      result = this->write(value);
+    }
+
+    // on write failure, continue the automation chain rather than stopping so that e.g. disconnect can work.
+    if (!result)
+      this->play_next_(x...);
+  }
+
+  /**
+   * Note about logging: the esph_log_X macros are used here because the CI checks complain about use of the ESP LOG
+   * macros in header files (Can't even write it in a comment!)
+   * Not sure why, because they seem to work just fine.
+   * The problem is that the implementation of a templated class can't be placed in a .cpp file when using C++ less than
+   * 17, so the methods have to be here.  The esph_log_X macros are equivalent in function, but don't trigger the CI
+   * errors.
+   */
+  // initiate the write. Return true if all went well, will be followed by a WRITE_CHAR event.
+  bool write(const uint8_t *data, size_t len) {
+    if (this->node_state != espbt::ClientState::ESTABLISHED) {
+      esph_log_w(Automation::TAG, "Cannot write to BLE characteristic - not connected");
+      return false;
+    }
+#if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
+    char hex_buf[format_hex_pretty_size(BLE_WRITE_MAX_LOG_BYTES)];
+    esph_log_vv(Automation::TAG, "Will write %d bytes: %s", len, format_hex_pretty_to(hex_buf, data, len));
+#endif
+    esp_err_t err =
+        esp_ble_gattc_write_char(this->parent()->get_gattc_if(), this->parent()->get_conn_id(), this->char_handle_, len,
+                                 const_cast<uint8_t *>(data), this->write_type_, ESP_GATT_AUTH_REQ_NONE);
+    if (err != ESP_OK) {
+      esph_log_e(Automation::TAG, "Error writing to characteristic: %s!", esp_err_to_name(err));
+      return false;
+    }
+    return true;
+  }
+
+  bool write(const std::vector<uint8_t> &value) { return this->write(value.data(), value.size()); }
+
+  void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
+                           esp_ble_gattc_cb_param_t *param) override {
+    switch (event) {
+      case ESP_GATTC_WRITE_CHAR_EVT:
+        // upstream code checked the MAC address, verify the characteristic.
+        if (param->write.handle == this->char_handle_)
+          this->parent()->run_later([this]() { this->play_next_tuple_(this->var_); });
+        break;
+      case ESP_GATTC_DISCONNECT_EVT:
+        if (this->num_running_ != 0)
+          this->stop_complex();
+        break;
+      case ESP_GATTC_SEARCH_CMPL_EVT: {
+        auto *chr = this->parent()->get_characteristic(this->service_uuid_, this->char_uuid_);
+        if (chr == nullptr) {
+          char char_buf[esp32_ble::UUID_STR_LEN];
+          char service_buf[esp32_ble::UUID_STR_LEN];
+          esph_log_w("ble_write_action", "Characteristic %s was not found in service %s",
+                     this->char_uuid_.to_str(char_buf), this->service_uuid_.to_str(service_buf));
+          break;
+        }
+        this->char_handle_ = chr->handle;
+        this->char_props_ = chr->properties;
+        if (this->char_props_ & ESP_GATT_CHAR_PROP_BIT_WRITE) {
+          this->write_type_ = ESP_GATT_WRITE_TYPE_RSP;
+          esph_log_d(Automation::TAG, "Write type: ESP_GATT_WRITE_TYPE_RSP");
+        } else if (this->char_props_ & ESP_GATT_CHAR_PROP_BIT_WRITE_NR) {
+          this->write_type_ = ESP_GATT_WRITE_TYPE_NO_RSP;
+          esph_log_d(Automation::TAG, "Write type: ESP_GATT_WRITE_TYPE_NO_RSP");
+        } else {
+          char char_buf[esp32_ble::UUID_STR_LEN];
+          esph_log_e(Automation::TAG, "Characteristic %s does not allow writing", this->char_uuid_.to_str(char_buf));
+          break;
+        }
+        this->node_state = espbt::ClientState::ESTABLISHED;
+        char char_buf[esp32_ble::UUID_STR_LEN];
+        esph_log_d(Automation::TAG, "Found characteristic %s on device %s", this->char_uuid_.to_str(char_buf),
+                   ble_client_->address_str());
+        break;
+      }
+      default:
+        break;
+    }
+  }
+
+ private:
+  BLEClient *ble_client_;
+  ssize_t len_{-1};  // -1 = template mode, >=0 = static mode with length
+  union Value {
+    std::vector<uint8_t> (*func)(Ts...);  // Function pointer (stateless lambdas)
+    const uint8_t *data;                  // Pointer to static data in flash
+  } value_;
+  espbt::ESPBTUUID service_uuid_;
+  espbt::ESPBTUUID char_uuid_;
+  std::tuple<Ts...> var_{};
+  uint16_t char_handle_{};
+  esp_gatt_char_prop_t char_props_{};
+  esp_gatt_write_type_t write_type_{};
+};
+
 template<typename... Ts> class BLEClientPasskeyReplyAction final : public Action<Ts...> {
 public:
  BLEClientPasskeyReplyAction(BLEClient *ble_client) { parent_ = ble_client; }
@@ -1,103 +0,0 @@
-// Neutral twins of the shared ble_client automations. Class names, namespace,
-// and codegen-visible signatures are IDENTICAL to automation.h so generated
-// main.cpp compiles against whichever engine the build gates in; only the
-// internals differ (client callbacks and the neutral node interface instead
-// of raw gattc events). The Bluedroid-security automations (passkey, numeric
-// comparison, remove bond) have no neutral equivalent and stay esp32-only.
-
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#if defined(USE_BLE_CLIENT_GATT_NODES) && !defined(USE_BLE_CLIENT_LEGACY_ENGINE)
-
-#include <tuple>
-
-#include "ble_client_gatt.h"
-#include "esphome/core/automation.h"
-
-namespace esphome::ble_client {
-
-template<typename... Ts> class BLEClientConnectAction final : public Action<Ts...> {
- public:
-  BLEClientConnectAction(BLEClient *ble_client) {
-    ble_client_ = ble_client;
-    ble_client->add_on_connect_callback([this]() {
-      if (this->num_running_ != 0)
-        this->play_next_tuple_(this->var_);
-    });
-    // A connect attempt that dies (or a later disconnect) terminates the
-    // chain - unless a fresh attempt is already in flight, meaning a user
-    // trigger on this same list started this action (an on_disconnect that
-    // reconnects) and the wait belongs to that attempt. Legacy split these:
-    // it aborted on DISCONNECT_EVT, the trigger fired on the later CLOSE_EVT.
-    auto terminate = [this]() {
-      if (this->num_running_ != 0 && this->ble_client_->idle())
-        this->stop_complex();
-    };
-    ble_client->add_on_connect_failed_callback(terminate);
-    ble_client->add_on_disconnect_callback(terminate);
-  }
-
-  // not used since we override play_complex_
-  void play(const Ts &...x) override {}
-
-  void play_complex(const Ts &...x) override {
-    // it makes no sense to have multiple instances of this running at the
-    // same time; cancel a re-trigger while still running.
-    if (this->num_running_ != 0) {
-      this->stop_complex();
-      return;
-    }
-    this->num_running_++;
-    if (this->ble_client_->connected()) {
-      this->play_next_(x...);
-    } else {
-      this->var_ = std::make_tuple(x...);
-      // No-op while already connecting; the callback resolves the wait.
-      this->ble_client_->connect();
-    }
-  }
-
- private:
-  BLEClient *ble_client_;
-  std::tuple<Ts...> var_{};
-};
-
-template<typename... Ts> class BLEClientDisconnectAction final : public Action<Ts...> {
- public:
-  BLEClientDisconnectAction(BLEClient *ble_client) {
-    ble_client_ = ble_client;
-    // Both terminal outcomes resolve the wait: a completed teardown and a
-    // connect attempt that died on the way down.
-    ble_client->add_on_disconnect_callback([this]() {
-      if (this->num_running_ != 0)
-        this->play_next_tuple_(this->var_);
-    });
-    ble_client->add_on_connect_failed_callback([this]() {
-      if (this->num_running_ != 0)
-        this->play_next_tuple_(this->var_);
-    });
-  }
-
-  // not used since we override play_complex_
-  void play(const Ts &...x) override {}
-
-  void play_complex(const Ts &...x) override {
-    this->num_running_++;
-    if (this->ble_client_->idle()) {
-      this->play_next_(x...);
-    } else {
-      this->var_ = std::make_tuple(x...);
-      this->ble_client_->disconnect();
-    }
-  }
-
- private:
-  BLEClient *ble_client_;
-  std::tuple<Ts...> var_{};
-};
-
-}  // namespace esphome::ble_client
-
-#endif  // USE_BLE_CLIENT_GATT_NODES && !USE_BLE_CLIENT_LEGACY_ENGINE
@@ -2,16 +2,10 @@
 #include "esphome/components/esp32_ble_client/ble_client_base.h"
 #include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
 #include "esphome/core/application.h"
-#include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"

-#ifdef USE_BLE_CLIENT_LEGACY_ENGINE
-
-#ifdef USE_BLE_CLIENT_GATT_NODES
-#include "esphome/components/bluetooth_connection/bluetooth_connection.h"
-#include "esphome/components/bluetooth_connection/gatt_service_table_bluedroid.h"
-#endif
+#ifdef USE_ESP32

 namespace esphome::ble_client {

@@ -36,10 +30,6 @@ void BLEClient::dump_config() {
 bool BLEClient::parse_device(const espbt::ESPBTDevice &device) {
  if (!this->enabled)
    return false;
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  if (device.address_uint64() == this->address_ && this->gatt_backoff_.holding_off())
-    return false;
-#endif
  return BLEClientBase::parse_device(device);
 }

@@ -50,65 +40,24 @@ void BLEClient::set_enabled(bool enabled) {
  if (!enabled) {
    ESP_LOGI(TAG, "[%s] Disabling BLE client.", this->address_str());
    this->disconnect();
-    return;
  }
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // A re-enable clears the backoff (neutral-engine parity).
-  this->gatt_backoff_.reset();
-#endif
 }

 bool BLEClient::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t esp_gattc_if,
                                    esp_ble_gattc_cb_param_t *param) {
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // Bridge-initiated registrations bypass the base's REG_FOR_NOTIFY handling:
-  // its automatic CCCD write would double the node's own.
-  // Handle-keyed: mixed legacy/neutral subscriptions to one characteristic
-  // are unsupported during the migration window.
-  if (event == ESP_GATTC_REG_FOR_NOTIFY_EVT && esp_gattc_if == this->gattc_if_ &&
-      this->take_pending_gatt_reg_(param->reg_for_notify.handle)) {
-    if (this->pending_notify_regs_ > 0)
-      this->pending_notify_regs_--;
-    int err = param->reg_for_notify.status == ESP_GATT_OK ? 0 : param->reg_for_notify.status;
-    this->notify_state_to_gatt_nodes_(param->reg_for_notify.handle, true, err);
-    // A retiring last registration must still release the cache.
-    this->maybe_release_services_();
-    return true;
-  }
-#endif
  if (!BLEClientBase::gattc_event_handler(event, esp_gattc_if, param))
    return false;

-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // Before the legacy fan-out so gatt nodes resolve before any trigger fires.
-  if (!this->gatt_nodes_.empty()) {
-    if (event == ESP_GATTC_SEARCH_CMPL_EVT) {
-      // A failed discovery tears the link down; the on_connect trigger must
-      // not fire into the teardown.
-      if (!this->handle_gatt_search_cmpl_(param->search_cmpl.status))
-        return true;
-    } else {
-      this->dispatch_gatt_event_(event, param);
-    }
-  }
-#endif
  for (auto *node : this->nodes_)
    node->gattc_event_handler(event, esp_gattc_if, param);
-  // The automations run after the nodes; on_connect runs before the release so it can still use the services
-  if (event == ESP_GATTC_SEARCH_CMPL_EVT)
-    this->connect_callbacks_.call();
-  this->maybe_release_services_();
-  if (event == ESP_GATTC_CLOSE_EVT)
-    this->disconnect_callbacks_.call();
-  return true;
-}

-void BLEClient::maybe_release_services_() {
  // The release frees the GATT cache that BLEClientBase's CCCD lookup still needs.
+  // The last REG_FOR_NOTIFY event clears the counter before node dispatch, so the release still runs here.
  if (!this->services_.empty() && !this->notify_registration_pending() && this->all_nodes_established_()) {
    this->release_services();
    ESP_LOGD(TAG, "All clients established, services released");
  }
+  return true;
 }

 void BLEClient::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {
@@ -116,19 +65,10 @@ void BLEClient::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_p

  for (auto *node : this->nodes_)
    node->gap_event_handler(event, param);
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  if (event == ESP_GAP_BLE_AUTH_CMPL_EVT && this->check_addr(param->ble_security.auth_cmpl.bd_addr)) {
-    int status = param->ble_security.auth_cmpl.success ? 0 : param->ble_security.auth_cmpl.fail_reason;
-    for (auto *node : this->gatt_nodes_)
-      node->on_pairing_result(status);
-  }
-#endif
 }

 void BLEClient::set_state(espbt::ClientState state) {
  BLEClientBase::set_state(state);
-  // ESTABLISHED never flows through here; gatt nodes are promoted after the
-  // on_connected fan-out.
  for (auto &node : nodes_)
    node->node_state = state;
 }
@@ -143,221 +83,6 @@ bool BLEClient::all_nodes_established_() {
  return true;
 }

-#ifdef USE_BLE_CLIENT_GATT_NODES
-
-void BLEClient::register_gatt_node(BLEClientNode *node) {
-  // Parent before the capacity check so a dropped node still has a usable
-  // parent() (neutral-engine parity).
-  node->set_ble_client_parent(this);
-  if (this->gatt_nodes_.size() == ESPHOME_BLE_CLIENT_MAX_NODES) {
-    // push_back past capacity is a silent no-op; an undersized slot count
-    // must be loud at boot, not an unresolvable node at runtime.
-    ESP_LOGE(TAG, "[%s] Node capacity exceeded; node dropped", this->address_str());
-    this->status_set_error(LOG_STR("node capacity exceeded"));
-    return;
-  }
-  this->gatt_nodes_.push_back(node);
-  // nodes_ covers the shared state bookkeeping; gatt_nodes_ is the neutral
-  // fan-out subset.
-  this->register_ble_node(node);
-}
-
-int BLEClient::find_pending_gatt_reg_(uint16_t handle) const {
-  for (uint8_t i = 0; i < this->pending_gatt_reg_count_; i++) {
-    if (this->pending_gatt_regs_[i] == handle)
-      return i;
-  }
-  return -1;
-}
-
-bool BLEClient::take_pending_gatt_reg_(uint16_t handle) {
-  int i = this->find_pending_gatt_reg_(handle);
-  if (i < 0)
-    return false;
-  // No duplicates (notify_characteristic refuses a re-push); swap-with-last.
-  this->pending_gatt_regs_[i] = this->pending_gatt_regs_[--this->pending_gatt_reg_count_];
-  return true;
-}
-
-void BLEClient::notify_state_to_gatt_nodes_(uint16_t handle, bool enabled, int error) {
-  if (error != 0) {
-    ESP_LOGW(TAG, "[%s] Notify %s on handle 0x%04x failed, status=%d", this->address_str(),
-             enabled ? "enable" : "disable", handle, error);
-  }
-  for (auto *node : this->gatt_nodes_)
-    node->on_notify_state(handle, enabled, error);
-}
-
-void BLEClient::dispatch_gatt_event_(esp_gattc_cb_event_t event, esp_ble_gattc_cb_param_t *param) {
-  switch (event) {
-    case ESP_GATTC_READ_CHAR_EVT:
-    case ESP_GATTC_READ_DESCR_EVT: {
-      bool ok = param->read.status == ESP_GATT_OK;
-      if (!ok) {
-        // Breadcrumb even when no node claims the handle.
-        ESP_LOGD(TAG, "[%s] Read on handle 0x%04x completed with status %d", this->address_str(), param->read.handle,
-                 param->read.status);
-      }
-      for (auto *node : this->gatt_nodes_) {
-        node->on_read_result(param->read.handle, ok ? param->read.value : nullptr, ok ? param->read.value_len : 0,
-                             ok ? 0 : param->read.status);
-      }
-      break;
-    }
-    case ESP_GATTC_WRITE_CHAR_EVT:
-    case ESP_GATTC_WRITE_DESCR_EVT:
-      if (param->write.status != ESP_GATT_OK) {
-        // Breadcrumb even when no node claims the handle.
-        ESP_LOGD(TAG, "[%s] Write on handle 0x%04x completed with status %d", this->address_str(), param->write.handle,
-                 param->write.status);
-      }
-      for (auto *node : this->gatt_nodes_) {
-        node->on_write_result(param->write.handle, param->write.status == ESP_GATT_OK ? 0 : param->write.status);
-      }
-      break;
-    case ESP_GATTC_NOTIFY_EVT:
-      for (auto *node : this->gatt_nodes_) {
-        node->on_notify(param->notify.handle, param->notify.value, param->notify.value_len);
-      }
-      break;
-    case ESP_GATTC_UNREG_FOR_NOTIFY_EVT:
-      // The base does no CCCD work for unregister; no interception needed.
-      this->notify_state_to_gatt_nodes_(
-          param->unreg_for_notify.handle, false,
-          param->unreg_for_notify.status == ESP_GATT_OK ? 0 : param->unreg_for_notify.status);
-      break;
-    default:
-      break;
-  }
-}
-
-bool BLEClient::handle_gatt_search_cmpl_(esp_gatt_status_t status) {
-  // The base ignores the search status; the neutral contract must not.
-  uint16_t service_total = 0;
-  bool counted = status == ESP_GATT_OK && bluetooth_connection::BluedroidServiceTable::count_services(
-                                              this->gattc_if_, this->conn_id_, &service_total);
-  if (!counted || service_total == 0) {
-    // A failed search poisons the whole discovery, legacy nodes included.
-    ESP_LOGW(TAG, "[%s] Discovery failed (status=%d, services=%u)", this->address_str(), status, service_total);
-    this->gatt_backoff_.register_failure(this->address_str());
-    this->disconnect();
-    return false;
-  }
-  // Stack-owned; nodes copy their handles during on_connected().
-  bluetooth_connection::BluedroidServiceTable table;
-  if (!table.build(this->gattc_if_, this->conn_id_, service_total, this->connection_index_)) {
-    if (!this->has_legacy_nodes_()) {
-      ESP_LOGW(TAG, "[%s] Service table build failed; treating as failed discovery", this->address_str());
-      this->gatt_backoff_.register_failure(this->address_str());
-      this->disconnect();
-      return false;
-    }
-    // Only the table build failed; legacy nodes read the base's services_
-    // and keep the link. Gatt nodes catch the next connection.
-    ESP_LOGW(TAG, "[%s] Service table build failed; gatt nodes skip this connection", this->address_str());
-    this->status_set_warning(LOG_STR("gatt nodes inactive: service table build failed"));
-    // A peer whose database never walks must not retry the build at
-    // advertisement cadence once the legacy nodes drop the link.
-    this->gatt_backoff_.register_failure(this->address_str());
-  } else {
-    this->gatt_connected_ = true;
-    auto view = table.view();
-    for (auto *node : this->gatt_nodes_) {
-      node->on_connected(view);
-      if (this->state() != espbt::ClientState::ESTABLISHED) {
-        // The node tore the link down; remaining nodes get on_disconnected
-        // with no preceding on_connected, so leave a trace of why.
-        ESP_LOGW(TAG, "[%s] A node aborted the connection during setup", this->address_str());
-        return false;
-      }
-    }
-    this->gatt_backoff_.reset();
-    this->status_clear_warning();
-  }
-  // Promote so the legacy release condition can fire.
-  for (auto *node : this->gatt_nodes_)
-    node->node_state = espbt::ClientState::ESTABLISHED;
-  return true;
-}
-
-void BLEClient::on_disconnect_complete(esp_err_t reason) {
-  this->pending_gatt_reg_count_ = 0;
-  if (!this->gatt_connected_)
-    return;  // Never-established links report nothing (neutral parity).
-  this->gatt_connected_ = false;
-  for (auto *node : this->gatt_nodes_)
-    node->on_disconnected();
-}
-
-int BLEClient::check_and_log_error_(const char *operation, esp_err_t err) {
-  if (err != ESP_OK)
-    this->log_gattc_warning_(operation, err);
-  return err;
-}
-
-int BLEClient::write_characteristic(uint16_t handle, const uint8_t *data, uint16_t len, bool response) {
-  if (this->conn_id_ == UNSET_CONN_ID)
-    return ble_device_base::GATT_ERR_NOT_CONNECTED;
-  return this->check_and_log_error_(
-      "esp_ble_gattc_write_char",
-      esp_ble_gattc_write_char(this->gattc_if_, this->conn_id_, handle, len, const_cast<uint8_t *>(data),
-                               response ? ESP_GATT_WRITE_TYPE_RSP : ESP_GATT_WRITE_TYPE_NO_RSP,
-                               ESP_GATT_AUTH_REQ_NONE));
-}
-
-int BLEClient::read_characteristic(uint16_t handle) {
-  if (this->conn_id_ == UNSET_CONN_ID)
-    return ble_device_base::GATT_ERR_NOT_CONNECTED;
-  return this->check_and_log_error_("esp_ble_gattc_read_char", esp_ble_gattc_read_char(this->gattc_if_, this->conn_id_,
-                                                                                       handle, ESP_GATT_AUTH_REQ_NONE));
-}
-
-int BLEClient::read_descriptor(uint16_t handle) {
-  if (this->conn_id_ == UNSET_CONN_ID)
-    return ble_device_base::GATT_ERR_NOT_CONNECTED;
-  return this->check_and_log_error_(
-      "esp_ble_gattc_read_char_descr",
-      esp_ble_gattc_read_char_descr(this->gattc_if_, this->conn_id_, handle, ESP_GATT_AUTH_REQ_NONE));
-}
-
-int BLEClient::write_descriptor(uint16_t handle, const uint8_t *data, uint16_t len) {
-  if (this->conn_id_ == UNSET_CONN_ID)
-    return ble_device_base::GATT_ERR_NOT_CONNECTED;
-  return this->check_and_log_error_(
-      "esp_ble_gattc_write_char_descr",
-      esp_ble_gattc_write_char_descr(this->gattc_if_, this->conn_id_, handle, len, const_cast<uint8_t *>(data),
-                                     ESP_GATT_WRITE_TYPE_RSP, ESP_GATT_AUTH_REQ_NONE));
-}
-
-int BLEClient::notify_characteristic(uint16_t handle, bool enable) {
-  if (this->conn_id_ == UNSET_CONN_ID)
-    return ble_device_base::GATT_ERR_NOT_CONNECTED;
-  if (enable) {
-    if (this->find_pending_gatt_reg_(handle) >= 0) {
-      // ESP_OK: the in-flight registration's completion fans out to all nodes.
-      ESP_LOGW(TAG, "[%s] Notify registration already pending for handle 0x%04x", this->address_str(), handle);
-      return ESP_OK;
-    }
-    if (this->pending_gatt_reg_count_ == MAX_PENDING_NOTIFY_REGS) {
-      // An untracked registration would let the base's auto-CCCD through.
-      ESP_LOGE(TAG, "[%s] Too many pending notify registrations", this->address_str());
-      return ble_device_base::GATT_ERR_NO_MEMORY;
-    }
-    // The base helper's pending count holds the service-release until the
-    // (intercepted) completion.
-    esp_err_t err = this->register_for_notify(handle);
-    if (err == ESP_OK)
-      this->pending_gatt_regs_[this->pending_gatt_reg_count_++] = handle;
-    return this->check_and_log_error_("esp_ble_gattc_register_for_notify", err);
-  }
-  return this->check_and_log_error_("esp_ble_gattc_unregister_for_notify",
-                                    esp_ble_gattc_unregister_for_notify(this->gattc_if_, this->remote_bda_, handle));
-}
-
-int BLEClient::unpair() { return bluetooth_connection::unpair_device(this->get_address()); }
-
-#endif  // USE_BLE_CLIENT_GATT_NODES
-
 }  // namespace esphome::ble_client

 #endif
@@ -1,20 +1,18 @@
 #pragma once

-#include "esphome/core/defines.h"
-
-#ifdef USE_BLE_CLIENT_LEGACY_ENGINE
-
-#include "ble_client_node.h"
-#include "connect_backoff.h"
 #include "esphome/components/esp32_ble_client/ble_client_base.h"
 #include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"

+#ifdef USE_ESP32
+
 #include <esp_bt_defs.h>
 #include <esp_gap_ble_api.h>
 #include <esp_gatt_common_api.h>
 #include <esp_gattc_api.h>
+#include <array>
+#include <string>
 #include <vector>

 namespace esphome::ble_client {
@@ -23,6 +21,34 @@ namespace espbt = esphome::esp32_ble_tracker;

 using namespace esp32_ble_client;

+class BLEClient;
+
+class BLEClientNode {
+ public:
+  virtual void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
+                                   esp_ble_gattc_cb_param_t *param) {};
+  virtual void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {}
+  virtual void loop() {}
+  void set_address(uint64_t address) { address_ = address; }
+  espbt::ESPBTClient *client;
+  // This should be transitioned to Established once the node no longer needs
+  // the services/descriptors/characteristics of the parent client. This will
+  // allow some memory to be freed.
+  // The parent frees the peer's GATT cache once every node reports Established.
+  // Never report Established while an operation that reads that cache is outstanding.
+  // - esp_ble_gattc_register_for_notify() completes asynchronously.
+  // - Register from ESP_GATTC_SEARCH_CMPL_EVT, then set this from ESP_GATTC_REG_FOR_NOTIFY_EVT.
+  // - BLEClientBase::register_for_notify() holds the release until the registration completes.
+  espbt::ClientState node_state;
+
+  BLEClient *parent() { return this->parent_; }
+  void set_ble_client_parent(BLEClient *parent) { this->parent_ = parent; }
+
+ protected:
+  BLEClient *parent_;
+  uint64_t address_;
+};
+
 class BLEClient final : public BLEClientBase {
 public:
  void setup() override;
@@ -38,75 +64,19 @@ class BLEClient final : public BLEClientBase {
  void set_enabled(bool enabled);

  void register_ble_node(BLEClientNode *node) {
+    node->client = this;
    node->set_ble_client_parent(this);
    this->nodes_.push_back(node);
  }

-  // on_connect fires once discovery completes; on_disconnect on CLOSE_EVT, so only after a completed open
-  template<typename F> void add_on_connect_callback(F &&callback) {
-    this->connect_callbacks_.add(std::forward<F>(callback));
-  }
-  template<typename F> void add_on_disconnect_callback(F &&callback) {
-    this->disconnect_callbacks_.add(std::forward<F>(callback));
-  }
-
  bool enabled;

  void set_state(espbt::ClientState state) override;

-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // ---- the neutral node surface (signatures shared with the non-esp32
-  // engine, so nodes on the neutral interface compile against either) ----
-  void register_gatt_node(BLEClientNode *node);
-
-  bool idle() const { return this->state() == espbt::ClientState::IDLE; }
-
-  int write_characteristic(uint16_t handle, const uint8_t *data, uint16_t len, bool response);
-  int read_characteristic(uint16_t handle);
-  int read_descriptor(uint16_t handle);
-  int write_descriptor(uint16_t handle, const uint8_t *data, uint16_t len);
-  /// Local registration only; per the neutral contract the CCCD write is the
-  /// node's job (the legacy auto-CCCD is suppressed for these handles).
-  int notify_characteristic(uint16_t handle, bool enable);
-  // pair() comes from BLEClientBase, matching the neutral engine's.
-  int unpair();
-#endif
-
 protected:
  bool all_nodes_established_();
-  void maybe_release_services_();
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  int check_and_log_error_(const char *operation, esp_err_t err);
-  int find_pending_gatt_reg_(uint16_t handle) const;
-  void notify_state_to_gatt_nodes_(uint16_t handle, bool enabled, int error);
-  void dispatch_gatt_event_(esp_gattc_cb_event_t event, esp_ble_gattc_cb_param_t *param);
-  // False = failed discovery: the link comes down and the caller suppresses
-  // the legacy fan-out.
-  bool handle_gatt_search_cmpl_(esp_gatt_status_t status);
-  bool take_pending_gatt_reg_(uint16_t handle);
-  void on_disconnect_complete(esp_err_t reason) override;
-#endif

  std::vector<BLEClientNode *> nodes_;
-  LazyCallbackManager<void()> connect_callbacks_;
-  LazyCallbackManager<void()> disconnect_callbacks_;
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // Raise if a migrated node needs more concurrent registrations.
-  static constexpr uint8_t MAX_PENDING_NOTIFY_REGS = 4;
-
-  // Nodes on the neutral surface; fed the translated callbacks and
-  // auto-established after the on_connected fan-out. Every gatt node is
-  // also in nodes_ (registration pushes into both).
-  StaticVector<BLEClientNode *, ESPHOME_BLE_CLIENT_MAX_NODES> gatt_nodes_;
-  bool has_legacy_nodes_() const { return this->nodes_.size() > this->gatt_nodes_.size(); }
-  // Reconnect backoff after materializer failures.
-  ConnectBackoff gatt_backoff_;
-  // Bridge-initiated notify registrations awaiting REG_FOR_NOTIFY_EVT.
-  uint16_t pending_gatt_regs_[MAX_PENDING_NOTIFY_REGS];
-  uint8_t pending_gatt_reg_count_{0};
-  // on_connected fan-out started; on_disconnected is owed at teardown.
-  bool gatt_connected_{false};
-#endif
 };

 }  // namespace esphome::ble_client
@@ -1,261 +0,0 @@
-#include "ble_client_gatt.h"
-
-#if defined(USE_BLE_CLIENT_GATT_NODES) && !defined(USE_BLE_CLIENT_LEGACY_ENGINE)
-
-#include "esphome/core/hal.h"
-#include "esphome/core/log.h"
-
-namespace esphome::ble_client {
-
-ESPHOME_LOG_TAG(TAG, "ble_client");
-
-void BLEClient::register_ble_node(BLEClientNode *node) {
-  node->set_ble_client_parent(this);
-  if (this->nodes_.size() == ESPHOME_BLE_CLIENT_MAX_NODES) {
-    // push_back past capacity is a silent no-op; an undersized slot count
-    // must be loud at boot, not an unresolvable node at runtime.
-    ESP_LOGE(TAG, "[%s] Node capacity exceeded; node dropped", this->address_str_);
-    this->status_set_error(LOG_STR("node capacity exceeded"));
-    return;
-  }
-  this->nodes_.push_back(node);
-}
-
-void BLEClient::set_address(uint64_t address) {
-  this->address_ = address;
-  uint8_t mac[6];
-  ble_device_base::uint64_to_mac_msb_first(address, mac);
-  format_mac_addr_upper(mac, this->address_str_);
-}
-
-void BLEClient::set_enabled(bool enabled) {
-  if (enabled == this->enabled)
-    return;
-  ESP_LOGI(TAG, "[%s] %s", this->address_str_, enabled ? "Enabled" : "Disabled");
-  this->enabled = enabled;
-  if (!enabled) {
-    this->disconnect();
-    return;
-  }
-  // A re-enable clears the backoff; the next sighting connects (legacy
-  // parity: enabling does not itself connect).
-  this->backoff_.reset();
-}
-
-bool BLEClient::parse_device(const ble_device_base::ESPBTDevice &device) {
-  if (device.address_uint64() != this->address_)
-    return false;
-  // The sighting is the source of truth for the address type.
-  this->address_type_ = device.get_address_type();
-  this->address_type_known_ = true;
-  if (!this->enabled || !this->auto_connect_ || this->state_ != State::IDLE)
-    return true;
-  if (this->backoff_.holding_off())
-    return true;
-  this->attempt_connect_();
-  return true;
-}
-
-void BLEClient::connect() {
-  if (this->state_ != State::IDLE) {
-    ESP_LOGD(TAG, "[%s] Connect requested while busy, ignoring", this->address_str_);
-    return;
-  }
-  // An absent peer can inhibit scanning for the backend's full connect
-  // timeout, so this is worth a breadcrumb - but it is a supported action.
-  ESP_LOGI(TAG, "[%s] Connecting on request", this->address_str_);
-  if (!this->address_type_known_) {
-    // Legacy parity: without a sighting the address type defaults to
-    // public, which never matches a random-static peer.
-    ESP_LOGW(TAG, "[%s] No sighting yet; assuming a public address type", this->address_str_);
-  }
-  this->attempt_connect_();
-}
-
-void BLEClient::attempt_connect_() {
-  int err = this->backend_->connect(this->address_, this->address_type_);
-  if (err != 0) {
-    // A refused connect never produces a callback: stay idle, charge the
-    // backoff, and resolve any waiting connect action through the failure
-    // path so its chain terminates.
-    ESP_LOGW(TAG, "[%s] Connect refused, err=%d", this->address_str_, err);
-    this->backoff_.register_failure(this->address_str_);
-    this->defer([this]() { this->connect_failed_callbacks_.call(); });
-    return;
-  }
-  ESP_LOGD(TAG, "[%s] Connecting", this->address_str_);
-  this->state_ = State::CONNECTING;
-}
-
-void BLEClient::disconnect() {
-  if (this->state_ == State::IDLE) {
-    ESP_LOGD(TAG, "[%s] Disconnect requested while idle, ignoring", this->address_str_);
-    return;
-  }
-  if (this->cancel_requested_) {
-    // The accepted teardown still reports; a refused second gatt_disconnect()
-    // would settle the link twice (phantom connect failure, backoff charge).
-    ESP_LOGD(TAG, "[%s] Disconnect already in flight, ignoring", this->address_str_);
-    return;
-  }
-  // A deliberate teardown's failure report must not feed the backoff.
-  this->cancel_requested_ = true;
-  int err = this->backend_->gatt_disconnect();
-  if (err != 0) {
-    // Refused synchronously: backend and client disagree about the link
-    // state. Warn, then settle through the deliberate-cancel path.
-    ESP_LOGW(TAG, "[%s] Disconnect refused, err=%d; settling locally", this->address_str_, err);
-    this->on_connection_state(false, 0, err);
-  }
-}
-
-void BLEClient::on_connection_state(bool connected, uint16_t mtu, int error) {
-  if (connected) {
-    this->state_ = State::DISCOVERING;
-    int discover_err = this->backend_->discover_services();
-    if (discover_err != 0) {
-      // Synchronous refusal: no discovery completion will follow.
-      ESP_LOGW(TAG, "[%s] Service discovery refused, err=%d", this->address_str_, discover_err);
-      this->backoff_.register_failure(this->address_str_);
-      // Deliberate teardown: its report must not charge the backoff again.
-      this->disconnect();
-    }
-    return;
-  }
-  bool was_connected = this->state_ == State::CONNECTED;
-  bool cancelled = this->cancel_requested_;
-  this->cancel_requested_ = false;
-  this->state_ = State::IDLE;
-  if (was_connected) {
-    ESP_LOGI(TAG, "[%s] Disconnected, status=%d", this->address_str_, error);
-    for (auto *node : this->nodes_) {
-      node->on_disconnected();
-    }
-    // Continuations leave the backend's event-drain stack first.
-    this->defer([this]() { this->disconnect_callbacks_.call(); });
-  } else {
-    if (cancelled) {
-      // status carries the refusal code when the teardown settled
-      // synchronously; 0 on a backend-completed cancel.
-      ESP_LOGD(TAG, "[%s] Connect attempt cancelled, status=%d", this->address_str_, error);
-    } else {
-      ESP_LOGW(TAG, "[%s] Connect failed, status=%d", this->address_str_, error);
-      this->backoff_.register_failure(this->address_str_);
-    }
-    this->defer([this]() { this->connect_failed_callbacks_.call(); });
-  }
-}
-
-void BLEClient::on_service_discovery_done(int error) {
-  if (this->state_ != State::DISCOVERING || this->cancel_requested_) {
-    // Raced a teardown; the terminal report settles the link.
-    ESP_LOGD(TAG, "[%s] Discovery completed during teardown, ignoring", this->address_str_);
-    this->backend_->release_services();
-    return;
-  }
-  if (error != 0) {
-    ESP_LOGW(TAG, "[%s] Service discovery failed, status=%d", this->address_str_, error);
-    this->backoff_.register_failure(this->address_str_);
-    // The teardown is deliberate: do not charge the backoff again for its
-    // connection report.
-    this->disconnect();
-    return;
-  }
-  ble_device_base::GattServiceTable table{};
-  if (!this->nodes_.empty()) {
-    // Materialize only when a node will read it: a client with no nodes
-    // would pay the build/free cycle on every (re)connect for nothing.
-    table = this->backend_->get_service_table();
-    if (table.service_count == 0) {
-      // A failed materialization is indistinguishable from a service-less
-      // peer, and a real GATT peer always exposes at least GAP/GATT: fail
-      // the discovery before CONNECTED so the teardown resolves through
-      // connect_failed, never a spurious on_disconnect.
-      ESP_LOGW(TAG, "[%s] Service table is empty; treating as failed discovery", this->address_str_);
-      this->backend_->release_services();
-      this->backoff_.register_failure(this->address_str_);
-      this->disconnect();
-      return;
-    }
-  }
-  // CONNECTED before the fan-out so nodes may consult connected() from
-  // their own on_connected().
-  this->state_ = State::CONNECTED;
-  for (auto *node : this->nodes_) {
-    node->on_connected(table);
-    if (this->state_ != State::CONNECTED || this->cancel_requested_) {
-      // A node tore the link down mid-fan-out: on_disconnect fires with no
-      // preceding on_connect, so leave a trace of why.
-      ESP_LOGW(TAG, "[%s] A node aborted the connection during setup", this->address_str_);
-      this->backend_->release_services();
-      return;
-    }
-  }
-  this->backend_->release_services();
-  this->backoff_.reset();
-  ESP_LOGI(TAG, "[%s] Connected", this->address_str_);
-  this->defer([this]() { this->connect_callbacks_.call(); });
-}
-
-void BLEClient::on_write_result(uint16_t handle, int error) {
-  if (error != 0) {
-    // Breadcrumb even when no node claims the handle.
-    ESP_LOGD(TAG, "[%s] Write on handle 0x%04x completed with status %d", this->address_str_, handle, error);
-  }
-  for (auto *node : this->nodes_) {
-    node->on_write_result(handle, error);
-  }
-}
-
-void BLEClient::on_read_result(uint16_t handle, const uint8_t *data, uint16_t len, int error) {
-  if (error != 0) {
-    // Breadcrumb even when no node claims the handle.
-    ESP_LOGD(TAG, "[%s] Read on handle 0x%04x completed with status %d", this->address_str_, handle, error);
-  }
-  for (auto *node : this->nodes_) {
-    node->on_read_result(handle, data, len, error);
-  }
-}
-
-void BLEClient::on_notify_data(uint16_t handle, const uint8_t *data, uint16_t len) {
-  // Every node sees every notification and filters by handle (legacy parity).
-  for (auto *node : this->nodes_) {
-    node->on_notify(handle, data, len);
-  }
-}
-
-void BLEClient::on_notify_state(uint16_t handle, bool enabled, int error) {
-  if (error != 0) {
-    ESP_LOGW(TAG, "[%s] Notify %s on handle 0x%04x failed, status=%d", this->address_str_,
-             enabled ? "enable" : "disable", handle, error);
-  }
-  for (auto *node : this->nodes_) {
-    node->on_notify_state(handle, enabled, error);
-  }
-}
-
-void BLEClient::on_pairing_result(int status) {
-  if (status != 0) {
-    ESP_LOGW(TAG, "[%s] Pairing failed, status=%d", this->address_str_, status);
-  } else {
-    ESP_LOGI(TAG, "[%s] Paired", this->address_str_);
-  }
-  for (auto *node : this->nodes_) {
-    node->on_pairing_result(status);
-  }
-}
-
-void BLEClient::dump_config() {
-  ESP_LOGCONFIG(TAG,
-                "BLE Client:\n"
-                "  Address: %s\n"
-                "  Auto connect: %s",
-                this->address_str_, YESNO(this->auto_connect_));
-  if (this->enabled && this->state_ == State::IDLE) {
-    ESP_LOGCONFIG(TAG, "  Waiting for an advertisement from the device");
-  }
-}
-
-}  // namespace esphome::ble_client
-
-#endif  // USE_BLE_CLIENT_GATT_NODES && !USE_BLE_CLIENT_LEGACY_ENGINE
@@ -1,151 +0,0 @@
-// Platform-neutral ble_client engine on the ble_device_base GATT contract.
-//
-// Compiled on every platform with a GATT backend except esp32, which keeps
-// the legacy BLEClientBase engine (ble_client.h) until its raw-gattc node
-// family migrates - the exclusive gates make the same class names resolve to
-// exactly one definition per build, so codegen is shared.
-//
-// Connects are sighting-gated like the legacy engine: the client is a parsed
-// advertisement listener, captures the peer's address type from the sighting,
-// and asks the backend to connect only when enabled and idle.
-
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#if defined(USE_BLE_CLIENT_GATT_NODES) && !defined(USE_BLE_CLIENT_LEGACY_ENGINE)
-
-#include "ble_client_node.h"
-#include "connect_backoff.h"
-#include "esphome/components/ble_device_base/ble_device.h"
-#include "esphome/components/ble_device_base/ble_gatt_client.h"
-#include "esphome/components/bluetooth_connection/bluetooth_connection.h"
-#include "esphome/components/bluetooth_connection/bluetooth_connection_gatt_backend.h"
-#include "esphome/core/component.h"
-#include "esphome/core/helpers.h"
-
-#include <cstdint>
-#include <functional>
-
-namespace esphome::ble_client {
-
-class BLEClient : public Component,
-                  public ble_device_base::ESPBTDeviceListener,
-                  public ble_device_base::GattClientListener {
- public:
-  void dump_config() override;
-
-  // Public field for legacy parity (the switch platform republishes it).
-  bool enabled{true};
-
-  void set_backend(ble_device_base::BLEGattConnection *backend) {
-    this->backend_ = backend;
-    backend->set_listener(this);
-  }
-  void set_address(uint64_t address);
-  void set_auto_connect(bool auto_connect) { this->auto_connect_ = auto_connect; }
-  void set_enabled(bool enabled);
-  const char *address_str() const { return this->address_str_; }
-
-  void register_ble_node(BLEClientNode *node);
-  // One registration spelling shared with the esp32 engine's bridge.
-  void register_gatt_node(BLEClientNode *node) { this->register_ble_node(node); }
-
-  // An accepted teardown already owns the link: the pending report cannot be
-  // a connect. state_ stays put so that report still fires on_disconnect.
-  bool connected() const { return this->state_ == State::CONNECTED && !this->cancel_requested_; }
-  bool idle() const { return this->state_ == State::IDLE; }
-
-  /// Action-initiated connect (no sighting needed; uses the last captured
-  /// address type, public until a sighting arrives). No-op unless idle.
-  void connect();
-  void disconnect();
-
-  /// Legacy-named deferral used by the automation twins: neutral listener
-  /// callbacks run inside the backend's event drain, so automation chain
-  /// continuations must leave that stack first.
-  void run_later(std::function<void()> &&f) { this->defer(std::move(f)); }  // NOLINT
-
-  // Backend ops for nodes and actions - the frozen node-facing surface.
-  // Only write_characteristic has an in-tree caller; subscribing means
-  // notify_characteristic plus a CCCD write_descriptor (the caller's job
-  // per the contract).
-  int write_characteristic(uint16_t handle, const uint8_t *data, uint16_t len, bool response) {
-    return this->backend_->write_characteristic(handle, data, len, response);
-  }
-  int read_characteristic(uint16_t handle) { return this->backend_->read_characteristic(handle); }
-  int read_descriptor(uint16_t handle) { return this->backend_->read_descriptor(handle); }
-  int write_descriptor(uint16_t handle, const uint8_t *data, uint16_t len) {
-    return this->backend_->write_descriptor(handle, data, len);
-  }
-  int notify_characteristic(uint16_t handle, bool enable) {
-    return this->backend_->notify_characteristic(handle, enable);
-  }
-  int pair() { return this->backend_->pair(); }
-  int unpair() { return bluetooth_connection::unpair_device(this->address_); }
-
-  // Automation callback registration.
-  template<typename F> void add_on_connect_callback(F &&callback) {
-    this->connect_callbacks_.add(std::forward<F>(callback));
-  }
-  template<typename F> void add_on_disconnect_callback(F &&callback) {
-    this->disconnect_callbacks_.add(std::forward<F>(callback));
-  }
-  // Fired when a connect attempt dies before being established; the user
-  // on_disconnect trigger deliberately does NOT fire here (legacy parity).
-  template<typename F> void add_on_connect_failed_callback(F &&callback) {
-    this->connect_failed_callbacks_.add(std::forward<F>(callback));
-  }
-
-  // ---- ble_device_base::ESPBTDeviceListener ----
-  bool parse_device(const ble_device_base::ESPBTDevice &device) override;
-
-  // ---- ble_device_base::GattClientListener ----
-  void on_connection_state(bool connected, uint16_t mtu, int error) override;
-  void on_service_discovery_done(int error) override;
-  void on_read_result(uint16_t handle, const uint8_t *data, uint16_t len, int error) override;
-  void on_write_result(uint16_t handle, int error) override;
-  void on_notify_data(uint16_t handle, const uint8_t *data, uint16_t len) override;
-  void on_notify_state(uint16_t handle, bool enabled, int error) override;
-  void on_pairing_result(int status) override;
-
- protected:
-  enum class State : uint8_t { IDLE, CONNECTING, DISCOVERING, CONNECTED };
-
-  void attempt_connect_();
-
-  // Group 1: pointers / containers
-  ble_device_base::BLEGattConnection *backend_{nullptr};
-  // Codegen-sized (ESPHOME_BLE_CLIENT_MAX_NODES); filled during setup.
-  StaticVector<BLEClientNode *, ESPHOME_BLE_CLIENT_MAX_NODES> nodes_;
-
-  // Group 2: 8-byte types
-  uint64_t address_{0};
-
-  // Group 3: callback managers (pointer-sized when empty)
-  LazyCallbackManager<void()> connect_callbacks_;
-  LazyCallbackManager<void()> disconnect_callbacks_;
-  LazyCallbackManager<void()> connect_failed_callbacks_;
-
-  // Group 4: 4-byte types
-  // Backoff so an undiscoverable database or a dead peer cannot produce a
-  // battery-draining connect loop.
-  ConnectBackoff backoff_;
-
-  // Group 5: arrays
-  char address_str_[MAC_ADDRESS_PRETTY_BUFFER_SIZE]{};
-
-  // Group 6: 1-byte types
-  State state_{State::IDLE};
-  uint8_t address_type_{0};  // BLE_ADDR_TYPE_*, captured from the sighting
-  // Distinguishes a captured public type from the never-sighted default.
-  bool address_type_known_{false};
-  bool auto_connect_{true};
-  // A user-initiated teardown in flight; its failure report is not a
-  // connect failure and must not feed the backoff.
-  bool cancel_requested_{false};
-};
-
-}  // namespace esphome::ble_client
-
-#endif  // USE_BLE_CLIENT_GATT_NODES && !USE_BLE_CLIENT_LEGACY_ENGINE
@@ -1,68 +0,0 @@
-// The single BLEClientNode both ble_client engines share. The neutral
-// callback surface is the one interface node components build on; the raw
-// esp32 surface below it remains for components that have not migrated yet.
-
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#ifdef USE_BLE_GATT_CLIENT
-#include "esphome/components/ble_device_base/ble_gatt_client.h"
-#endif
-#ifdef USE_BLE_CLIENT_LEGACY_ENGINE
-#include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
-
-#include <esp_gap_ble_api.h>
-#include <esp_gattc_api.h>
-#endif
-
-#include <cstdint>
-
-namespace esphome::ble_client {
-
-class BLEClient;
-
-class BLEClientNode {
- public:
-#ifdef USE_BLE_CLIENT_GATT_NODES
-  // Neutral surface, delivered by both engines. The table is borrowed: copy
-  // handles during on_connected(). All nodes see all completions; filter by
-  // handle.
-  // A node that disconnects from inside on_connected() aborts the fan-out;
-  // the user's on_disconnect may then fire without a preceding on_connect.
-  virtual void on_connected(const ble_device_base::GattServiceTable &table) {}
-  virtual void on_disconnected() {}
-  virtual void on_notify(uint16_t handle, const uint8_t *data, uint16_t len) {}
-  // One in-flight registration per handle; its completion fans out to every
-  // node, so a refused duplicate request still sees on_notify_state.
-  virtual void on_notify_state(uint16_t handle, bool enabled, int error) {}
-  virtual void on_read_result(uint16_t handle, const uint8_t *data, uint16_t len, int error) {}
-  virtual void on_write_result(uint16_t handle, int error) {}
-  virtual void on_pairing_result(int status) {}
-#endif
-#ifdef USE_BLE_CLIENT_LEGACY_ENGINE
-  // Legacy raw surface; components overriding these need the legacy engine
-  // until migrated to the neutral surface above.
-  virtual void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
-                                   esp_ble_gattc_cb_param_t *param) {}
-  virtual void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {}
-  virtual void loop() {}
-  // This should be transitioned to Established once the node no longer needs
-  // the services/descriptors/characteristics of the parent client. This will
-  // allow some memory to be freed.
-  // The parent frees the peer's GATT cache once every node reports Established.
-  // Never report Established while an operation that reads that cache is outstanding.
-  // - esp_ble_gattc_register_for_notify() completes asynchronously.
-  // - Register from ESP_GATTC_SEARCH_CMPL_EVT, then set this from ESP_GATTC_REG_FOR_NOTIFY_EVT.
-  // - BLEClientBase::register_for_notify() holds the release until the registration completes.
-  esp32_ble_tracker::ClientState node_state;
-#endif
-
-  BLEClient *parent() const { return this->parent_; }
-  void set_ble_client_parent(BLEClient *parent) { this->parent_ = parent; }
-
- protected:
-  BLEClient *parent_{nullptr};
-};
-
-}  // namespace esphome::ble_client
@@ -1,172 +0,0 @@
-// The ble_client.ble_write action: a node on the platform-neutral interface,
-// so one implementation serves both engines (the esp32 bridge and the
-// neutral engine).
-
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#ifdef USE_BLE_CLIENT_GATT_NODES
-
-#include <tuple>
-#include <vector>
-
-// One of the two engine headers resolves per build.
-#include "ble_client.h"
-#include "ble_client_gatt.h"
-#include "ble_client_node.h"
-#include "esphome/core/automation.h"
-#include "esphome/core/helpers.h"
-#include "esphome/core/log.h"
-
-namespace esphome::ble_client {
-
-static const char *const BLE_WRITE_TAG = "ble_client.automation";
-
-// Maximum bytes to log in hex format for BLE writes (many logging buffers are 256 chars)
-static constexpr size_t BLE_WRITE_MAX_LOG_BYTES = 64;
-
-template<typename... Ts> class BLEClientWriteAction final : public Action<Ts...>, public BLEClientNode {
- public:
-  BLEClientWriteAction(BLEClient *ble_client) {
-    ble_client->register_gatt_node(this);
-    ble_client_ = ble_client;
-  }
-
-  void set_service_uuid16(uint16_t uuid) { this->service_uuid_ = ble_device_base::ESPBTUUID::from_uint16(uuid); }
-  void set_service_uuid32(uint32_t uuid) { this->service_uuid_ = ble_device_base::ESPBTUUID::from_uint32(uuid); }
-  void set_service_uuid128(uint8_t *uuid) { this->service_uuid_ = ble_device_base::ESPBTUUID::from_raw(uuid); }
-
-  void set_char_uuid16(uint16_t uuid) { this->char_uuid_ = ble_device_base::ESPBTUUID::from_uint16(uuid); }
-  void set_char_uuid32(uint32_t uuid) { this->char_uuid_ = ble_device_base::ESPBTUUID::from_uint32(uuid); }
-  void set_char_uuid128(uint8_t *uuid) { this->char_uuid_ = ble_device_base::ESPBTUUID::from_raw(uuid); }
-
-  void set_value_template(std::vector<uint8_t> (*func)(Ts...)) {
-    this->value_.func = func;
-    this->len_ = -1;  // Sentinel value indicates template mode
-  }
-
-  // Store pointer to static data in flash (no RAM copy)
-  void set_value_simple(const uint8_t *data, size_t len) {
-    this->value_.data = data;
-    this->len_ = len;  // Length >= 0 indicates static mode
-  }
-
-  void play(const Ts &...x) override {}
-
-  void play_complex(const Ts &...x) override {
-    this->num_running_++;
-    this->var_ = std::make_tuple(x...);
-
-    bool result;
-    if (this->len_ >= 0) {
-      result = this->write(this->value_.data, this->len_);
-    } else {
-      std::vector<uint8_t> value = this->value_.func(x...);
-      result = this->write(value.data(), value.size());
-    }
-
-    // on write failure, continue the automation chain rather than stopping so
-    // that e.g. disconnect can work.
-    if (!result)
-      this->play_next_(x...);
-  }
-
-  // Initiate the write; the completion arrives in on_write_result. The
-  // response-less path can complete synchronously inside the call, so the
-  // handle is armed before the backend is touched.
-  bool write(const uint8_t *data, size_t len) {
-    if (!this->ble_client_->connected()) {
-      esph_log_w(BLE_WRITE_TAG, "Cannot write to BLE characteristic - not connected");
-      return false;
-    }
-    if (!this->resolved_) {
-      esph_log_w(BLE_WRITE_TAG, "Cannot write to BLE characteristic - characteristic was not resolved");
-      return false;
-    }
-#if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
-    char hex_buf[format_hex_pretty_size(BLE_WRITE_MAX_LOG_BYTES)];
-    esph_log_vv(BLE_WRITE_TAG, "Will write %d bytes: %s", len, format_hex_pretty_to(hex_buf, data, len));
-#endif
-    int err = this->ble_client_->write_characteristic(this->char_handle_, data, len, this->write_response_);
-    if (err != 0) {
-      esph_log_e(BLE_WRITE_TAG, "Error writing to characteristic: %d!", err);
-      return false;
-    }
-    return true;
-  }
-
-  void on_connected(const ble_device_base::GattServiceTable &table) override {
-    // Resolution comes from this table only; a re-discovery must not keep a
-    // stale handle.
-    this->resolved_ = false;
-    this->char_handle_ = 0;
-    const auto *service = ble_device_base::find_service(table, this->service_uuid_);
-    const auto *chr =
-        service == nullptr ? nullptr : ble_device_base::find_characteristic(table, *service, this->char_uuid_);
-    if (chr == nullptr) {
-      char char_buf[ble_device_base::UUID_STR_LEN];
-      char service_buf[ble_device_base::UUID_STR_LEN];
-      esph_log_w(BLE_WRITE_TAG, "Characteristic %s was not found in service %s", this->char_uuid_.to_str(char_buf),
-                 this->service_uuid_.to_str(service_buf));
-      return;
-    }
-    if (chr->properties & ble_device_base::GATT_CHAR_PROP_WRITE) {
-      this->write_response_ = true;
-    } else if (chr->properties & ble_device_base::GATT_CHAR_PROP_WRITE_NO_RSP) {
-      this->write_response_ = false;
-    } else {
-      char char_buf[ble_device_base::UUID_STR_LEN];
-      esph_log_e(BLE_WRITE_TAG, "Characteristic %s does not allow writing", this->char_uuid_.to_str(char_buf));
-      return;
-    }
-    this->char_handle_ = chr->value_handle;
-    this->resolved_ = true;
-    char char_buf[ble_device_base::UUID_STR_LEN];
-    esph_log_d(BLE_WRITE_TAG, "Found characteristic %s on device %s", this->char_uuid_.to_str(char_buf),
-               this->ble_client_->address_str());
-  }
-
-  void on_disconnected() override {
-    this->resolved_ = false;
-    this->char_handle_ = 0;
-    if (this->num_running_ != 0)
-      this->stop_complex();
-  }
-
-  void on_write_result(uint16_t handle, int error) override {
-    if (this->num_running_ == 0) {
-      return;
-    }
-    if (!this->resolved_ || handle != this->char_handle_) {
-      // A parked chain waiting on a completion that never matches would
-      // otherwise stall silently until disconnect.
-      esph_log_d(BLE_WRITE_TAG, "Write result for handle 0x%04x ignored, waiting on 0x%04x", handle,
-                 this->char_handle_);
-      return;
-    }
-    if (error != 0) {
-      // Continue the chain (legacy parity) but leave a breadcrumb.
-      esph_log_w(BLE_WRITE_TAG, "Write completed with status %d", error);
-    }
-    this->ble_client_->run_later([this]() { this->play_next_tuple_(this->var_); });
-  }
-
- private:
-  BLEClient *ble_client_;
-  ssize_t len_{-1};  // -1 = template mode, >=0 = static mode with length
-  union Value {
-    std::vector<uint8_t> (*func)(Ts...);  // Function pointer (stateless lambdas)
-    const uint8_t *data;                  // Pointer to static data in flash
-  } value_;
-  ble_device_base::ESPBTUUID service_uuid_;
-  ble_device_base::ESPBTUUID char_uuid_;
-  std::tuple<Ts...> var_{};
-  uint16_t char_handle_{};
-  bool write_response_{false};
-  bool resolved_{false};
-};
-
-}  // namespace esphome::ble_client
-
-#endif  // USE_BLE_CLIENT_GATT_NODES
@@ -1,43 +0,0 @@
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#ifdef USE_BLE_GATT_CLIENT
-
-#include "esphome/core/hal.h"
-#include "esphome/core/log.h"
-
-#include <cstdint>
-
-namespace esphome::ble_client {
-
-/// Reconnect backoff after repeated connect/discovery failures, shared by
-/// both engines. 256 ms ticks in a uint16_t keep it 4 bytes; the ~4.7 h tick
-/// wrap can at worst reinstate one stale hold-off of a minute.
-class ConnectBackoff {
- public:
-  bool holding_off() const {
-    return this->failures_ != 0 && static_cast<uint16_t>(now() - this->start_) < this->failures_ * STEP_TICKS;
-  }
-  void register_failure(const char *address_str) {
-    if (this->failures_ < MAX_STEPS)
-      this->failures_++;
-    this->start_ = now();
-    esph_log_w("ble_client", "[%s] Holding off reconnect for %u s", address_str, this->failures_ * 10u);
-  }
-  void reset() { this->failures_ = 0; }
-
- private:
-  // ~10 s per consecutive failure, capped so a flapping peer retries within
-  // a minute at worst.
-  static constexpr uint16_t STEP_TICKS = 40;  // x 256 ms
-  static constexpr uint8_t MAX_STEPS = 6;
-  static uint16_t now() { return static_cast<uint16_t>(millis() >> 8); }
-
-  uint16_t start_{0};
-  uint8_t failures_{0};
-};
-
-}  // namespace esphome::ble_client
-
-#endif  // USE_BLE_GATT_CLIENT
@@ -1,48 +0,0 @@
-#include "ble_gatt_client.h"
-
-#ifdef USE_BLE_GATT_CLIENT
-
-#include "esphome/core/log.h"
-
-namespace esphome::ble_device_base {
-
-ESPHOME_LOG_TAG(TAG, "ble_device_base");
-
-const GattCharacteristic *find_characteristic(const GattServiceTable &table, const GattService &service,
-                                              const ESPBTUUID &uuid) {
-  // 32-bit range math: a corrupt first/count pair cannot wrap past the check.
-  uint32_t end = uint32_t(service.first_characteristic) + service.characteristic_count;
-  if (end > table.characteristic_count) {
-    ESP_LOGW(TAG, "characteristic range out of bounds");
-    return nullptr;
-  }
-  for (uint32_t i = service.first_characteristic; i < end; i++) {
-    if (table.characteristics[i].uuid == uuid)
-      return &table.characteristics[i];
-  }
-  return nullptr;
-}
-
-const GattDescriptor *find_descriptor(const GattServiceTable &table, const GattCharacteristic &characteristic,
-                                      const ESPBTUUID &uuid) {
-  uint32_t end = uint32_t(characteristic.first_descriptor) + characteristic.descriptor_count;
-  if (end > table.descriptor_count) {
-    // Corrupt range, not a missing descriptor.
-    ESP_LOGW(TAG, "descriptor range out of bounds");
-    return nullptr;
-  }
-  for (uint32_t i = characteristic.first_descriptor; i < end; i++) {
-    if (table.descriptors[i].uuid == uuid)
-      return &table.descriptors[i];
-  }
-  return nullptr;
-}
-
-uint16_t find_cccd(const GattServiceTable &table, const GattCharacteristic &characteristic) {
-  const GattDescriptor *desc = find_descriptor(table, characteristic, ESPBTUUID::from_uint16(CCCD_UUID));
-  return desc != nullptr ? desc->handle : 0;
-}
-
-}  // namespace esphome::ble_device_base
-
-#endif  // USE_BLE_GATT_CLIENT
@@ -11,16 +11,13 @@
 // interface. All listener calls are delivered on the ESPHome main loop;
 // borrowed data pointers are valid only for the duration of the call.
 //
-// Error domain (plain int, forwarded to the API without translation, so the
-// values are wire-frozen - API clients interpret them):
+// Error domain (plain int, forwarded to the API without translation):
 //   0            success
-//   1..0x11      ATT error codes (Bluetooth spec) - reserved; a backend whose
-//                native error codes land in this window must remap them out
+//   1..0x11      ATT error codes (Bluetooth spec; BTstack and Bluedroid agree)
 //   GATT_ERR_NOT_CONNECTED (-1)  no connection to the peer (on esp32 a raw
 //                ESP_FAIL from the stack shares this value; both read as a
 //                failed, unusable connection on the client side)
 //   GATT_ERR_NO_MEMORY (-2)      backend storage exhausted
-//   -1..-15      reserved for future contract sentinels
 //   anything else: platform stack error/status code, surfaced opaquely.
 // Connection events carry HCI status/disconnect reason codes (same code
 // space on every controller).
@@ -102,23 +99,9 @@ class GattClientListener {
 // The BLEGattConnection op surface, asserted where the alias binds
 // (bluetooth_connection_gatt_backend.h). Operations return 0 when accepted (completion arrives
 // through the listener) or a synchronous error (busy, not connected, stack
-// rejection); one operation may be outstanding at a time. A connection-state
-// or discovery completion always arrives from the event loop, never
-// synchronously from inside the op call - a synchronous terminal
-// on_connection_state from within gatt_disconnect() would re-enter the
-// consumer mid-teardown. A local-only completion may instead report inline,
-// before the op returns: notify_characteristic (a subscription-list edit on
-// the rp2 backend) and a write without response whose payload the stack took
-// immediately. Consumers must therefore arm whatever state their
-// on_write_result/on_notify_state reads before issuing the op, never after
-// the call returns. Semantics beyond the signatures:
+// rejection); one operation may be outstanding at a time. Semantics beyond
+// the signatures:
 // - connect: addr_type is a BLE_ADDR_TYPE_* constant (ble_device.h).
-//   Returning 0 means the request is accepted, not that the radio acted: the
-//   backend owns integration with its platform's scan/connect arbitration
-//   (Bluedroid parks the request for the tracker's promote loop, which owns
-//   scan-stop/coex/one-connect-at-a-time; the rp2 backend opens immediately
-//   and relies on sighting-gated consumers). Consumers must not assume
-//   connect timing.
 // - gatt_disconnect: also cancels a connect in progress (named to coexist
 //   with a platform stack's own void disconnect() on one backend class).
 //   Nonzero means nothing to tear down and no completion will follow; an
@@ -160,41 +143,6 @@ concept BLEGattConnectionContract = requires(T conn, GattClientListener *listene
  { conn.set_connection_type(ConnectionType{}) } -> std::same_as<void>;
 };

-// ---- service table lookup helpers ----
-//
-// Neutral, bounds-checked walks over a materialized GattServiceTable for
-// direct consumers that resolve a known device's handles by UUID (streaming
-// consumers forward the raw database and never need these). Linear search:
-// the table exists only between discovery and release_services(), for one
-// small known device.
-
-/// Client Characteristic Configuration descriptor UUID (Bluetooth spec).
-static constexpr uint16_t CCCD_UUID = 0x2902;
-
-// Characteristic property bits (the Bluetooth-spec declaration byte carried
-// in GattCharacteristic::properties; the ESP-IDF macros for these do not
-// exist on the other platforms).
-static constexpr uint8_t GATT_CHAR_PROP_WRITE_NO_RSP = 0x04;
-static constexpr uint8_t GATT_CHAR_PROP_WRITE = 0x08;
-
-inline const GattService *find_service(const GattServiceTable &table, const ESPBTUUID &uuid) {
-  for (uint16_t i = 0; i < table.service_count; i++) {
-    if (table.services[i].uuid == uuid)
-      return &table.services[i];
-  }
-  return nullptr;
-}
-
-const GattCharacteristic *find_characteristic(const GattServiceTable &table, const GattService &service,
-                                              const ESPBTUUID &uuid);
-
-const GattDescriptor *find_descriptor(const GattServiceTable &table, const GattCharacteristic &characteristic,
-                                      const ESPBTUUID &uuid);
-
-/// Handle of the characteristic's Client Characteristic Configuration
-/// descriptor (0x2902), or 0 when it has none.
-uint16_t find_cccd(const GattServiceTable &table, const GattCharacteristic &characteristic);
-
 }  // namespace esphome::ble_device_base

 #endif  // USE_BLE_GATT_CLIENT
@@ -1,14 +1,12 @@
 """Per-platform GATT connection backends and the helpers to embed one.

-Backends: esp32 Bluedroid, rp2 BTstack. No user-facing configuration; a
-consumer's codegen declares and registers the backend instances — the
-Bluetooth proxy through its per-slot connection wrappers (a streaming
-consumer), and the neutral ble_client through gatt_client_schema() +
-new_gatt_backend().
+Backends: esp32 Bluedroid, rp2 BTstack. No user-facing configuration; the
+Bluetooth proxy's codegen declares and registers the backend instances
+through gatt_client_schema()/hub_connection_schema() + new_gatt_backend().
 """

 from collections.abc import Awaitable, Callable
-from dataclasses import dataclass, field
+from dataclasses import dataclass

 import esphome.codegen as cg
 from esphome.components import rp2040_ble
@@ -25,8 +23,7 @@ from esphome.types import ConfigType
 def AUTO_LOAD() -> list[str]:
    """ble_device_base plus the platform BLE stack the build's backend
    registers with (the Bluedroid header includes the tracker's), so
-    consumers stay platform-blind. The platform-less arm serves tooling that
-    resolves the manifest without a target."""
+    consumers need not know. The platform-less arm serves manifest tooling."""
    if CORE.is_esp32:
        return ["ble_device_base", "esp32_ble_tracker"]
    if CORE.is_rp2:
@@ -66,8 +63,6 @@ DOMAIN = "bluetooth_connection"
@dataclass
 class _ConnectionData:
    rp2_backend_count: int = 0
-    # GATT connection slots claimed this run, for the platform cap check.
-    slot_consumers: list[str] = field(default_factory=list)


 def _get_data() -> _ConnectionData:
@@ -124,10 +119,6 @@ class _PlatformBackend:
    backend_class: cg.MockObjClass
    schema_fragment: Callable[[], cv.Schema]
    register: Callable[[cg.MockObj, ConfigType], Awaitable[None]]
-    # Selects the backend's alias-ladder arm (order-independent arms).
-    define: str
-    # The backend's on-demand materializer gate, when it has one.
-    materializer_define: str | None = None


 # The single registry of platforms with a GATT client backend; a platform
@@ -135,20 +126,11 @@ class _PlatformBackend:
 # platform's arm.
 _PLATFORM_BACKENDS: dict[str, _PlatformBackend] = {
    PLATFORM_ESP32: _PlatformBackend(
-        BluedroidGattClient,
-        _esp32_schema_fragment,
-        _esp32_register,
-        "USE_BLE_GATT_BACKEND_BLUEDROID",
-        materializer_define="USE_BLUEDROID_GATT_SERVICE_TABLE",
-    ),
-    PLATFORM_RP2: _PlatformBackend(
-        RP2GattClient, _rp2_schema_fragment, _rp2_register, "USE_BLE_GATT_BACKEND_RP2"
+        BluedroidGattClient, _esp32_schema_fragment, _esp32_register
    ),
+    PLATFORM_RP2: _PlatformBackend(RP2GattClient, _rp2_schema_fragment, _rp2_register),
 }

-# Gates dedicated-backend consumers (cv.only_on).
-GATT_CLIENT_PLATFORMS = list(_PLATFORM_BACKENDS)
-

 def _backend_entry(platform: str | None = None) -> _PlatformBackend:
    key = platform if platform is not None else CORE.target_platform
@@ -183,97 +165,21 @@ def hub_connection_schema(platform: str | None = None) -> cv.Schema:
    )


-def _charge_esp32_budget(count: int, consumer: str, config: ConfigType) -> None:
-    from esphome.components import esp32_ble
-
-    esp32_ble.consume_connection_slots(count, consumer)(config)
-
-
-def _charge_rp2_budget(count: int, consumer: str, config: ConfigType) -> None:
-    rp2040_ble.consume_connection_slots(count, consumer)(config)
-
-
-# Platforms whose BLE stack owns its own connection budget: the claim is
-# charged there and that stack's final validation is the one place an
-# overcommit is reported (never two messages for one misconfiguration). One
-# mapping drives both, so a platform can never be skipped without a charge.
-_STACK_BUDGETS: dict[str, Callable[[int, str, ConfigType], None]] = {
-    PLATFORM_ESP32: _charge_esp32_budget,
-    PLATFORM_RP2: _charge_rp2_budget,
-}
-
-
-def consume_gatt_slot(
-    consumer: str, count: int = 1
-) -> Callable[[ConfigType], ConfigType]:
-    """Validator claiming GATT connection slots - the one spelling for every
-    claimant. The neutral ledger covers backend platforms without a stack
-    budget (the cap check in FINAL_VALIDATE_SCHEMA)."""
-
-    def validator(config: ConfigType) -> ConfigType:
-        _get_data().slot_consumers.extend([consumer] * count)
-        if (charge := _STACK_BUDGETS.get(CORE.target_platform)) is not None:
-            charge(count, consumer, config)
-        return config
-
-    return validator
-
-
-def _validate_slot_totals(config: ConfigType) -> ConfigType:
-    # Skipped in testing mode so grouped component builds can co-exist
-    # (mirrors esp32_ble.validate_connection_slots).
-    if CORE.testing_mode:
-        return config
-    if CORE.target_platform in _STACK_BUDGETS:
-        return config
-    if (cap := HUB_MAX_CONNECTIONS.get(CORE.target_platform)) is None:
-        # Any backend platform without a stack budget must carry a cap here
-        # or fail loudly, never fail open.
-        if CORE.target_platform in _PLATFORM_BACKENDS:
-            raise cv.Invalid(
-                f"{CORE.target_platform} has a GATT backend but no slot cap "
-                "in HUB_MAX_CONNECTIONS"
-            )
-        return config
-    claimed = _get_data().slot_consumers
-    if len(claimed) > cap:
-        raise cv.Invalid(
-            f"{CORE.target_platform} supports at most {cap} GATT client "
-            f"connection(s); {len(claimed)} requested by: {', '.join(claimed)}"
-        )
-    return config
-
-
-FINAL_VALIDATE_SCHEMA = _validate_slot_totals
-
-
-async def new_gatt_backend(
-    config: ConfigType, *, service_table: bool = True
-) -> cg.MockObj:
+async def new_gatt_backend(config: ConfigType) -> cg.MockObj:
    """Instantiate the backend declared by gatt_client_schema() and register
    it with its platform stack. The connection slot is claimed at validation
-    (the consume_gatt_slot validators), not here.
-
-    service_table is honored by the Bluedroid backend only: forward
-    scaffolding for the first esp32 direct consumer, load-bearing on no
-    current build (rp2 ignores the define and always materializes - its
-    proxy hub streams through get_service_table(), so it must keep the
-    materializer regardless of the flag).
+    (the proxy's slot validators), not here.
    """
    from esphome.components import ble_device_base

-    entry = _backend_entry()
    ble_device_base.request_gatt_client()
-    cg.add_define(entry.define)
-    if service_table and entry.materializer_define is not None:
-        cg.add_define(entry.materializer_define)
    backend = cg.new_Pvariable(config[CONF_BACKEND_ID])
    # The backend is the slot's real Component: component keys from the
    # connection entry (setup_priority, ...) apply to it. Consumers whose own
    # schema carries keys that register_component would misapply to the
    # backend (e.g. a polling interval) must not put them in this config.
    await cg.register_component(backend, config)
-    await entry.register(backend, config)
+    await _backend_entry().register(backend, config)
    return backend


@@ -281,7 +187,6 @@ async def new_gatt_backend(
 # list (this module cannot import bluetooth_proxy to derive it).
 SOURCE_FILE_FRAMEWORKS: dict[str, set[PlatformFramework]] = {
    "bluetooth_connection_bluedroid.cpp": frameworks_for_platforms([PLATFORM_ESP32]),
-    "gatt_service_table_bluedroid.cpp": frameworks_for_platforms([PLATFORM_ESP32]),
    # Every hub platform the proxy admits (the file compiles empty where
    # USE_BLE_GATT_CLIENT is not defined), so a platform gaining a backend
    # cannot hit a missing-symbol trap here.
@@ -46,7 +46,7 @@ BatchClose close_service_batch(api::BluetoothGATTGetServicesResponse &resp, size

 #endif  // USE_BLUETOOTH_PROXY_CONNECTIONS

-#if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT)
+#if defined(USE_ESP32) && defined(USE_BLE_GATT_CLIENT)
 namespace esphome::bluetooth_connection {

 // Address-scoped Bluedroid maintenance. Gated with the connection surface:
@@ -65,4 +65,4 @@ conn_err_t clear_gatt_cache(uint64_t address) {
 }

 }  // namespace esphome::bluetooth_connection
-#endif  // USE_ESP32_BLE && USE_BLE_GATT_CLIENT
+#endif  // USE_ESP32 && USE_BLE_GATT_CLIENT
@@ -49,16 +49,15 @@ static constexpr conn_err_t CONN_OK = 0;
 // GATT contract so backend and wrapper cannot drift.
 static constexpr conn_err_t GATT_NOT_CONNECTED = ble_device_base::GATT_ERR_NOT_CONNECTED;

-// What the build's connection backend supports beyond GATT operations; the
-// proxy derives its feature flags and legacy version from these. Keyed on
-// the backend define, never the platform, so a second backend on one
-// platform carries its own facts.
-#if defined(USE_BLE_GATT_BACKEND_BLUEDROID)
+// What the platform's connection backend supports beyond GATT operations;
+// the proxy derives its feature flags and legacy version from these.
+#if defined(USE_ESP32)
 static constexpr bool SUPPORTS_PAIRING = true;
 static constexpr bool SUPPORTS_CACHE_CLEARING = true;
-#elif defined(USE_BLE_GATT_BACKEND_RP2)
+#elif defined(USE_RP2040_BLE) && defined(USE_BLE_GATT_CLIENT)
 // The rp2 BTstack backend pairs (just works + bonding); it has no service
-// cache to clear.
+// cache to clear. Keyed on the backend, not the generic client define, so a
+// future backend without pairing keeps the stub arm below.
 static constexpr bool SUPPORTS_PAIRING = true;
 static constexpr bool SUPPORTS_CACHE_CLEARING = false;
 #else
@@ -66,14 +65,13 @@ static constexpr bool SUPPORTS_PAIRING = false;
 static constexpr bool SUPPORTS_CACHE_CLEARING = false;
 #endif

-// Address-scoped (not connection-scoped) maintenance requests; keyed on the
-// stack (the calls need no backend instance).
-#if (defined(USE_ESP32_BLE) || defined(USE_RP2040_BLE)) && defined(USE_BLE_GATT_CLIENT)
+// Address-scoped (not connection-scoped) maintenance requests.
+#if (defined(USE_ESP32) || defined(USE_RP2040_BLE)) && defined(USE_BLE_GATT_CLIENT)
 conn_err_t unpair_device(uint64_t address);
 #else
 inline conn_err_t unpair_device(uint64_t) { return GATT_NOT_CONNECTED; }
 #endif
-#if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT)
+#if defined(USE_ESP32) && defined(USE_BLE_GATT_CLIENT)
 conn_err_t clear_gatt_cache(uint64_t address);
 #else
 inline conn_err_t clear_gatt_cache(uint64_t) { return GATT_NOT_CONNECTED; }
@@ -2,11 +2,10 @@

 #if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT)

-#include "bluetooth_connection.h"
-
 // The in-place streamer serves the proxy's service-discovery API; backend-only
 // builds compile without the proxy headers or the streamer.
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
+#include "bluetooth_connection.h"
 #include "bluetooth_connection_hub.h"

 #include "esphome/components/bluetooth_proxy/bluetooth_proxy.h"
@@ -346,9 +345,6 @@ int BluedroidGattClient::update_connection_params(uint16_t min_interval, uint16_

 void BluedroidGattClient::release_services() {
  this->service_total_ = 0;
-#ifdef USE_BLUEDROID_GATT_SERVICE_TABLE
-  this->table_.free();
-#endif
  // Always set: terminates any in-flight stream on every cache config.
  this->services_released_ = true;
 #ifndef CONFIG_BT_GATTC_CACHE_NVS_FLASH
@@ -361,24 +357,6 @@ void BluedroidGattClient::release_services() {
 #endif
 }

-#ifdef USE_BLUEDROID_GATT_SERVICE_TABLE
-ble_device_base::GattServiceTable BluedroidGattClient::get_service_table() {
-  // Lifetime: every teardown path (CLOSE_EVT, the safety timeout, stack-down,
-  // passive DISCONNECT) routes through release_services(), so a materialized
-  // table cannot outlive its link.
-  if (this->table_.empty() &&
-      (this->services_released_ || this->service_total_ == 0 ||
-       !this->table_.build(this->gattc_if_, this->conn_id_, this->service_total_, this->connection_index_))) {
-    // Released / no services / failed build all collapse to empty; the
-    // build failures warned above, log the quiet two.
-    ESP_LOGD(TAG, "[%d] No service table (released=%d, services=%u)", this->connection_index_, this->services_released_,
-             this->service_total_);
-    return {};
-  }
-  return this->table_.view();
-}
-#endif  // USE_BLUEDROID_GATT_SERVICE_TABLE
-
 // ---- internals ----

 bool BluedroidGattClient::check_addr_(const esp_bd_addr_t &addr) const {
@@ -425,11 +403,6 @@ void BluedroidGattClient::log_gattc_warning_(const char *operation, int code) {
 // ---- service streaming ----

 int BluedroidGattClient::handle_search_cmpl_(esp_gatt_status_t status) {
-#ifdef USE_BLUEDROID_GATT_SERVICE_TABLE
-  // Re-discovery moves the counts the table view derives offsets from; free
-  // the stale table.
-  this->table_.free();
-#endif
  // Step down from the fast discovery params.
  this->update_conn_params_(MEDIUM_MIN_CONN_INTERVAL, MEDIUM_MAX_CONN_INTERVAL, 0, MEDIUM_CONN_TIMEOUT, "medium");
  if (status != ESP_GATT_OK) {
@@ -11,9 +11,6 @@

 #if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT)

-#include "bluetooth_connection.h"
-#include "gatt_service_table_bluedroid.h"
-
 #include "esphome/components/ble_device_base/ble_gatt_client.h"
 #include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
 #include "esphome/core/component.h"
@@ -79,16 +76,11 @@ class BluedroidGattClient final : public esp32_ble_tracker::ESPBTClient, public
  int notify_characteristic(uint16_t handle, bool enable);
  int pair();
  int update_connection_params(uint16_t min_interval, uint16_t max_interval, uint16_t latency, uint16_t timeout);
-  // On-demand table for direct consumers; the proxy streams instead, so the
-  // materializer compiles only under USE_BLUEDROID_GATT_SERVICE_TABLE (emitted by
-  // direct-consumer codegen, never by the proxy).
-#ifdef USE_BLUEDROID_GATT_SERVICE_TABLE
-  ble_device_base::GattServiceTable get_service_table();
-#else
-  // A direct consumer reaching this stub misconfigured its codegen
-  // (service_table=False): the empty table reads as a service-less peer.
+  // Contract stub: the proxy streams in place; the on-demand materializer
+  // for direct consumers lands with #18205. NOTE: a direct consumer reaching
+  // this stub gets an empty table indistinguishable from a service-less
+  // peer - do not ship one against this backend before the materializer.
  ble_device_base::GattServiceTable get_service_table() { return {}; }
-#endif
  void release_services();

 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
@@ -118,9 +110,6 @@ class BluedroidGattClient final : public esp32_ble_tracker::ESPBTClient, public

  // Group 1: pointers / composed objects
  ble_device_base::GattClientListener *listener_{nullptr};
-#ifdef USE_BLUEDROID_GATT_SERVICE_TABLE
-  BluedroidServiceTable table_;
-#endif
  // Group 2: 4-byte types
  uint32_t disconnecting_started_{0};

@@ -12,12 +12,10 @@

 #include "esphome/components/ble_device_base/ble_gatt_client.h"

-// Arms are keyed on codegen-emitted per-backend defines (_PLATFORM_BACKENDS
-// in __init__.py), so they are order-independent.
-#if defined(USE_BLE_GATT_BACKEND_RP2)
+#if defined(USE_RP2040_BLE)
 #include "bluetooth_connection_rp2.h"
 #define ESPHOME_BLE_GATT_CONNECTION_TYPE bluetooth_connection::RP2GattClient
-#elif defined(USE_BLE_GATT_BACKEND_BLUEDROID)
+#elif defined(USE_ESP32_BLE)
 #include "bluetooth_connection_bluedroid.h"
 #define ESPHOME_BLE_GATT_CONNECTION_TYPE bluetooth_connection::BluedroidGattClient
 #elif defined(USE_BLE_GATT_CLIENT_STUB_BACKEND)
@@ -1,198 +0,0 @@
-#include "gatt_service_table_bluedroid.h"
-
-#if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT) && defined(USE_BLUEDROID_GATT_SERVICE_TABLE)
-
-#include "esphome/core/log.h"
-
-namespace esphome::bluetooth_connection {
-
-ESPHOME_LOG_TAG(TAG, "bluetooth_connection");
-
-// A stack that never reports end-of-range would otherwise walk forever.
-static constexpr uint16_t MAX_DESCRIPTORS_PER_CHARACTERISTIC = 64;
-
-// Shared enumeration for both build passes: an identical walk order is what
-// lets the counting pass size the block the filling pass fills.
-// INVALID_OFFSET/NOT_FOUND mean end-of-range; anything else is a failure.
-template<typename ServiceFn, typename CharFn, typename DescFn>
-bool BluedroidServiceTable::walk_(ServiceFn &&on_service, CharFn &&on_char, DescFn &&on_desc) {
-  for (uint16_t s = 0; s < this->service_total_; s++) {
-    esp_gattc_service_elem_t svc;
-    uint16_t svc_count = 1;
-    auto svc_status = esp_ble_gattc_get_service(this->gattc_if_, this->conn_id_, nullptr, &svc, &svc_count, s);
-    if (svc_status != ESP_GATT_OK || svc_count == 0) {
-      this->log_walk_warning_("esp_ble_gattc_get_service", svc_status);
-      return false;
-    }
-    if (!on_service(s, svc)) {
-      return false;
-    }
-    uint16_t svc_chars = 0;
-    auto count_status = esp_ble_gattc_get_attr_count(this->gattc_if_, this->conn_id_, ESP_GATT_DB_CHARACTERISTIC,
-                                                     svc.start_handle, svc.end_handle, 0, &svc_chars);
-    if (count_status != ESP_GATT_OK) {
-      this->log_walk_warning_("esp_ble_gattc_get_attr_count", count_status);
-      return false;
-    }
-    for (uint16_t c = 0; c < svc_chars; c++) {
-      esp_gattc_char_elem_t chr;
-      uint16_t char_count = 1;
-      auto status = esp_ble_gattc_get_all_char(this->gattc_if_, this->conn_id_, svc.start_handle, svc.end_handle, &chr,
-                                               &char_count, c);
-      if (status != ESP_GATT_OK || char_count == 0) {
-        // An early terminator contradicts svc_chars from the same cache;
-        // never build a silently truncated table.
-        this->log_walk_warning_("esp_ble_gattc_get_all_char", status);
-        return false;
-      }
-      if (!on_char(svc, chr)) {
-        return false;
-      }
-      for (uint16_t d = 0;; d++) {
-        if (d == MAX_DESCRIPTORS_PER_CHARACTERISTIC) {
-          // A stack that never reports end-of-range; fail like every other
-          // inconsistency instead of truncating the table silently.
-          ESP_LOGW(TAG, "[%d] Descriptor walk exceeded %u entries", this->log_index_,
-                   MAX_DESCRIPTORS_PER_CHARACTERISTIC);
-          return false;
-        }
-        esp_gattc_descr_elem_t desc;
-        uint16_t desc_count = 1;
-        auto desc_status =
-            esp_ble_gattc_get_all_descr(this->gattc_if_, this->conn_id_, chr.char_handle, &desc, &desc_count, d);
-        if (desc_status == ESP_GATT_INVALID_OFFSET || desc_status == ESP_GATT_NOT_FOUND) {
-          break;
-        }
-        if (desc_status != ESP_GATT_OK || desc_count == 0) {
-          this->log_walk_warning_("esp_ble_gattc_get_all_descr", desc_status);
-          return false;
-        }
-        if (!on_desc(chr, desc)) {
-          return false;
-        }
-      }
-    }
-  }
-  return true;
-}
-
-bool BluedroidServiceTable::count_services(esp_gatt_if_t gattc_if, uint16_t conn_id, uint16_t *total) {
-  uint16_t primary = 0;
-  uint16_t secondary = 0;
-  if (esp_ble_gattc_get_attr_count(gattc_if, conn_id, ESP_GATT_DB_PRIMARY_SERVICE, 0x0001, 0xFFFF, 0, &primary) !=
-          ESP_GATT_OK ||
-      esp_ble_gattc_get_attr_count(gattc_if, conn_id, ESP_GATT_DB_SECONDARY_SERVICE, 0x0001, 0xFFFF, 0, &secondary) !=
-          ESP_GATT_OK) {
-    // A failed count must not read as an authoritative empty database.
-    return false;
-  }
-  *total = primary + secondary;
-  return true;
-}
-
-bool BluedroidServiceTable::build(esp_gatt_if_t gattc_if, uint16_t conn_id, uint16_t service_total, uint8_t log_index) {
-  this->free();
-  this->gattc_if_ = gattc_if;
-  this->conn_id_ = conn_id;
-  this->service_total_ = service_total;
-  this->log_index_ = log_index;
-
-  // Pass 1: count, so one exact-size block holds the whole table.
-  uint16_t char_total = 0;
-  uint16_t desc_total = 0;
-  bool counted = this->walk_([](uint16_t, const esp_gattc_service_elem_t &) { return true; },
-                             [&](const esp_gattc_service_elem_t &, const esp_gattc_char_elem_t &) {
-                               char_total++;
-                               return true;
-                             },
-                             [&](const esp_gattc_char_elem_t &, const esp_gattc_descr_elem_t &) {
-                               desc_total++;
-                               return true;
-                             });
-  if (!counted) {
-    ESP_LOGW(TAG, "[%d] Service table walk failed during count", this->log_index_);
-    this->free();
-    return false;
-  }
-
-  // The arrays share one block; carving stays aligned because each struct's
-  // strictest member is the UUID and array sizes are multiples of it.
-  static_assert(alignof(ble_device_base::GattService) >= alignof(ble_device_base::GattCharacteristic) &&
-                alignof(ble_device_base::GattCharacteristic) >= alignof(ble_device_base::GattDescriptor));
-  size_t svc_bytes = this->service_total_ * sizeof(ble_device_base::GattService);
-  size_t char_bytes = char_total * sizeof(ble_device_base::GattCharacteristic);
-  size_t total_bytes = svc_bytes + char_bytes + desc_total * sizeof(ble_device_base::GattDescriptor);
-  RAMAllocator<uint8_t> allocator(RAMAllocator<uint8_t>::ALLOC_INTERNAL);
-  this->storage_ = allocator.allocate(total_bytes);
-  if (this->storage_ == nullptr) {
-    ESP_LOGW(TAG, "[%d] Service table allocation failed (%u bytes)", this->log_index_,
-             static_cast<unsigned>(total_bytes));
-    this->free();
-    return false;
-  }
-  auto *services = reinterpret_cast<ble_device_base::GattService *>(this->storage_);
-  auto *characteristics = reinterpret_cast<ble_device_base::GattCharacteristic *>(this->storage_ + svc_bytes);
-  auto *descriptors = reinterpret_cast<ble_device_base::GattDescriptor *>(this->storage_ + svc_bytes + char_bytes);
-
-  // Pass 2: fill, bounded by the pass-1 totals. A bound trip or a shortfall
-  // means the cached database changed between the passes; fail the build
-  // rather than serve an inconsistent table (the consumer retries).
-  uint16_t char_index = 0;
-  uint16_t desc_index = 0;
-  ble_device_base::GattService *cur_service = nullptr;
-  ble_device_base::GattCharacteristic *cur_char = nullptr;
-  bool filled = this->walk_(
-      [&](uint16_t s, const esp_gattc_service_elem_t &svc) {
-        cur_service = &services[s];
-        cur_service->uuid = ble_device_base::ESPBTUUID::from_uuid(svc.uuid);
-        cur_service->start_handle = svc.start_handle;
-        cur_service->end_handle = svc.end_handle;
-        cur_service->first_characteristic = char_index;
-        cur_service->characteristic_count = 0;
-        return true;
-      },
-      [&](const esp_gattc_service_elem_t &svc, const esp_gattc_char_elem_t &chr) {
-        if (char_index >= char_total) {
-          return false;
-        }
-        cur_char = &characteristics[char_index++];
-        cur_char->uuid = ble_device_base::ESPBTUUID::from_uuid(chr.uuid);
-        cur_char->value_handle = chr.char_handle;
-        // Bluedroid addresses descriptors by characteristic handle, so the
-        // table's end_handle only needs the service-bounded upper bound.
-        cur_char->end_handle = svc.end_handle;
-        cur_char->properties = chr.properties;
-        cur_char->first_descriptor = desc_index;
-        cur_char->descriptor_count = 0;
-        cur_service->characteristic_count++;
-        return true;
-      },
-      [&](const esp_gattc_char_elem_t &, const esp_gattc_descr_elem_t &desc) {
-        if (desc_index >= desc_total) {
-          return false;
-        }
-        descriptors[desc_index].uuid = ble_device_base::ESPBTUUID::from_uuid(desc.uuid);
-        descriptors[desc_index].handle = desc.handle;
-        desc_index++;
-        cur_char->descriptor_count++;
-        return true;
-      });
-  if (!filled || char_index != char_total || desc_index != desc_total) {
-    // Walk error or the database changed between passes; better an empty
-    // table than a corrupt one.
-    ESP_LOGW(TAG, "[%d] Service table walk mismatch, discarding", this->log_index_);
-    this->free();
-    return false;
-  }
-  this->char_total_ = char_total;
-  this->desc_total_ = desc_total;
-  return true;
-}
-
-void BluedroidServiceTable::log_walk_warning_(const char *operation, int code) {
-  ESP_LOGW(TAG, "[%d] %s failed, status=%d", this->log_index_, operation, code);
-}
-
-}  // namespace esphome::bluetooth_connection
-
-#endif  // USE_ESP32_BLE && USE_BLE_GATT_CLIENT && USE_BLUEDROID_GATT_SERVICE_TABLE
@@ -1,82 +0,0 @@
-// Owning two-pass materializer of one Bluedroid GATT database snapshot into
-// the neutral GattServiceTable layout, shared by the BluedroidGattClient
-// backend and ble_client's esp32 engine.
-
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#if defined(USE_ESP32_BLE) && defined(USE_BLE_GATT_CLIENT) && defined(USE_BLUEDROID_GATT_SERVICE_TABLE)
-
-#include "esphome/components/ble_device_base/ble_gatt_client.h"
-#include "esphome/core/helpers.h"
-
-#include <esp_gattc_api.h>
-
-namespace esphome::bluetooth_connection {
-
-class BluedroidServiceTable {
- public:
-  ~BluedroidServiceTable() { this->free(); }
-  // Owns storage_; a copy would double-free. The default constructor is user
-  // provided, not "= default", so value-initializing the enclosing backend
-  // cannot zero-fill .bss that is already zero.
-  BluedroidServiceTable() {}
-  BluedroidServiceTable(const BluedroidServiceTable &) = delete;
-  BluedroidServiceTable &operator=(const BluedroidServiceTable &) = delete;
-
-  /// The service count build() requires: the stack's PRIMARY+SECONDARY
-  /// attribute totals, never the SEARCH_RES event count.
-  static bool count_services(esp_gatt_if_t gattc_if, uint16_t conn_id, uint16_t *total);
-
-  /// Two-pass build from the stack's cached database (service_total from
-  /// count_services()). log_index labels warnings. Frees any previous table
-  /// first; on failure the table is left empty.
-  bool build(esp_gatt_if_t gattc_if, uint16_t conn_id, uint16_t service_total, uint8_t log_index);
-
-  // The view is carved from the storage block and the counts on each call
-  // (a cold path) rather than cached, saving a per-instance table member.
-  ble_device_base::GattServiceTable view() const {
-    size_t svc_bytes = this->service_total_ * sizeof(ble_device_base::GattService);
-    size_t char_bytes = this->char_total_ * sizeof(ble_device_base::GattCharacteristic);
-    return {reinterpret_cast<const ble_device_base::GattService *>(this->storage_),
-            reinterpret_cast<const ble_device_base::GattCharacteristic *>(this->storage_ + svc_bytes),
-            reinterpret_cast<const ble_device_base::GattDescriptor *>(this->storage_ + svc_bytes + char_bytes),
-            this->service_total_,
-            this->char_total_,
-            this->desc_total_};
-  }
-
-  // Always resets the counts: a failed build must never leave a non-zero
-  // service_total_ behind a null table.
-  void free() {
-    if (this->storage_ != nullptr) {
-      RAMAllocator<uint8_t> allocator(RAMAllocator<uint8_t>::ALLOC_INTERNAL);
-      allocator.deallocate(this->storage_, 0);
-      this->storage_ = nullptr;
-    }
-    this->service_total_ = 0;
-    this->char_total_ = 0;
-    this->desc_total_ = 0;
-  }
-
-  bool empty() const { return this->storage_ == nullptr; }
-
- private:
-  template<typename ServiceFn, typename CharFn, typename DescFn>
-  bool walk_(ServiceFn &&on_service, CharFn &&on_char, DescFn &&on_desc);
-  void log_walk_warning_(const char *operation, int code);
-
-  uint8_t *storage_{nullptr};
-  uint16_t service_total_{0};
-  uint16_t char_total_{0};
-  uint16_t desc_total_{0};
-  // Walk context, set by build().
-  uint16_t conn_id_{0};
-  esp_gatt_if_t gattc_if_{};  // uint8_t width
-  uint8_t log_index_{0};
-};
-
-}  // namespace esphome::bluetooth_connection
-
-#endif  // USE_ESP32_BLE && USE_BLE_GATT_CLIENT && USE_BLUEDROID_GATT_SERVICE_TABLE
@@ -94,20 +94,10 @@ def _esp32_config_schema() -> cv.All:
    CONNECTION_SCHEMA = bluetooth_connection.hub_connection_schema(PLATFORM_ESP32)

    def validate_connections(config: ConfigType) -> ConfigType:
-        if CONF_CONNECTIONS in config:
-            # Explicit entries claim slots like the generated ones; dev
-            # historically skipped this, letting an explicit-connections
-            # config evade the controller budget.
-            bluetooth_connection.consume_gatt_slot(
-                "bluetooth_proxy", len(config[CONF_CONNECTIONS])
-            )(config)
-            return config
-        if not config[CONF_ACTIVE]:
+        if CONF_CONNECTIONS in config or not config[CONF_ACTIVE]:
            return config
        connection_slots: int = config[CONF_CONNECTION_SLOTS]
-        bluetooth_connection.consume_gatt_slot("bluetooth_proxy", connection_slots)(
-            config
-        )
+        esp32_ble.consume_connection_slots(connection_slots, "bluetooth_proxy")(config)
        return {
            **config,
            CONF_CONNECTIONS: [CONNECTION_SCHEMA({}) for _ in range(connection_slots)],
@@ -159,14 +149,14 @@ def _rp2_config_schema() -> cv.All:
    connection_schema = bluetooth_connection.hub_connection_schema(PLATFORM_RP2)

    def populate_connections(config: ConfigType) -> ConfigType:
+        from esphome.components import rp2040_ble
+
        # One wrapper + backend pair per slot, declared during validation so
        # their ids exist for codegen (the esp32 arm's `connections` pattern).
        if not config[CONF_ACTIVE]:
            return config
        connection_slots: int = config[CONF_CONNECTION_SLOTS]
-        bluetooth_connection.consume_gatt_slot("bluetooth_proxy", connection_slots)(
-            config
-        )
+        rp2040_ble.consume_connection_slots(connection_slots, "bluetooth_proxy")(config)
        return {
            **config,
            CONF_CONNECTIONS: [connection_schema({}) for _ in range(connection_slots)],
@@ -216,9 +206,7 @@ async def _connections_to_code(var: cg.MockObj, config: ConfigType) -> None:
        # sends those requests and their handlers and encoders are dead.
        cg.add_define("USE_BLUETOOTH_PROXY_CONNECTIONS")
    for connection_conf in connections:
-        backend = await bluetooth_connection.new_gatt_backend(
-            connection_conf, service_table=False
-        )
+        backend = await bluetooth_connection.new_gatt_backend(connection_conf)
        connection = cg.new_Pvariable(connection_conf[CONF_ID])
        cg.add(connection.set_backend(backend))
        cg.add(var.register_connection(connection))
@@ -1,7 +1,7 @@
 #include "bme680_bsec.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
-#include <string>
+#include "esphome/core/progmem.h"

 namespace esphome::bme680_bsec {
 #ifdef USE_BSEC
@@ -9,7 +9,7 @@ ESPHOME_LOG_TAG(TAG, "bme680_bsec.sensor");

 static constexpr uint32_t READ_TIMEOUT_ID = 0;

-static const std::string IAQ_ACCURACY_STATES[4] = {"Stabilizing", "Uncertain", "Calibrating", "Calibrated"};
+PROGMEM_STRING_TABLE(IaqAccuracyStrings, "Stabilizing", "Uncertain", "Calibrating", "Calibrated");

 std::vector<BME680BSECComponent *>
    BME680BSECComponent::instances;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
@@ -386,10 +386,11 @@ void BME680BSECComponent::publish_(const bsec_output_t *outputs, uint8_t num_out
    switch (outputs[i].sensor_id) {
      case BSEC_OUTPUT_IAQ:
      case BSEC_OUTPUT_STATIC_IAQ: {
-        uint8_t accuracy = std::min<uint8_t>(outputs[i].accuracy, std::size(IAQ_ACCURACY_STATES) - 1);
+        uint8_t accuracy = std::min<uint8_t>(outputs[i].accuracy, IaqAccuracyStrings::LAST_INDEX);
        this->queue_push_([this, signal]() { this->publish_sensor_(this->iaq_sensor_, signal); });
        this->queue_push_([this, accuracy]() {
-          this->publish_sensor_(this->iaq_accuracy_text_sensor_, IAQ_ACCURACY_STATES[accuracy]);
+          this->publish_sensor_(this->iaq_accuracy_text_sensor_,
+                                IaqAccuracyStrings::get_progmem_str(accuracy, IaqAccuracyStrings::LAST_INDEX));
        });
        this->queue_push_([this, accuracy]() { this->publish_sensor_(this->iaq_accuracy_sensor_, accuracy, true); });

@@ -435,8 +436,9 @@ void BME680BSECComponent::publish_sensor_(sensor::Sensor *sensor, float value, b
  sensor->publish_state(value);
 }

-void BME680BSECComponent::publish_sensor_(text_sensor::TextSensor *sensor, const std::string &value) {
-  if (!sensor || (sensor->has_state() && sensor->state == value)) {
+void BME680BSECComponent::publish_sensor_(text_sensor::TextSensor *sensor, ProgmemStr value) {
+  if (!sensor ||
+      (sensor->has_state() && ESPHOME_strcmp_P(sensor->state.c_str(), reinterpret_cast<ESPHOME_PGM_P>(value)) == 0)) {
    return;
  }
  sensor->publish_state(value);
@@ -77,7 +77,7 @@ class BME680BSECComponent final : public Component, public i2c::I2CDevice {
  int64_t get_time_ns_();

  void publish_sensor_(sensor::Sensor *sensor, float value, bool change_only = false);
-  void publish_sensor_(text_sensor::TextSensor *sensor, const std::string &value);
+  void publish_sensor_(text_sensor::TextSensor *sensor, ProgmemStr value);

  void snapshot_state_();  // Fetch the current BSEC library state and save it in the bsec_state_data_ member (volatile
                           // memory)
@@ -2,6 +2,7 @@
 #include "cc1101pa.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
+#include "esphome/core/progmem.h"
 #include <cmath>
 #include <cstring>

@@ -14,6 +15,9 @@ namespace esphome::cc1101 {
 ESPHOME_LOG_TAG(TAG, "cc1101");
 static constexpr size_t TX_FIFO_SIZE = 64;

+// MDMCFG2 MOD_FORMAT values
+PROGMEM_STRING_TABLE(ModulationStrings, "2-FSK", "GFSK", "UNUSED", "ASK/OOK", "4-FSK", "UNUSED", "UNUSED", "MSK");
+
 static void split_float(float value, int mbits, uint8_t &e, uint32_t &m) {
  int e_tmp;
  float m_tmp = std::frexp(value, &e_tmp);
@@ -238,8 +242,6 @@ void CC1101Component::loop() {
 }

 void CC1101Component::dump_config() {
-  static const char *const MODULATION_NAMES[] = {"2-FSK", "GFSK",   "UNUSED", "ASK/OOK",
-                                                 "4-FSK", "UNUSED", "UNUSED", "MSK"};
  int32_t freq = static_cast<int32_t>(this->state_.FREQ2 << 16 | this->state_.FREQ1 << 8 | this->state_.FREQ0) *
                 XTAL_FREQUENCY / (1 << 16);
  float symbol_rate = (((256.0f + this->state_.DRATE_M) * (1 << this->state_.DRATE_E)) / (1 << 28)) * XTAL_FREQUENCY;
@@ -253,8 +255,9 @@ void CC1101Component::dump_config() {
                "  Symbol Rate: %.0f baud\n"
                "  Filter Bandwidth: %.1f Hz\n"
                "  Output Power: %.1f dBm",
-                this->chip_id_, freq, this->state_.CHANNR, MODULATION_NAMES[this->state_.MOD_FORMAT & 0x07],
-                symbol_rate, bw, this->output_power_effective_);
+                this->chip_id_, freq, this->state_.CHANNR,
+                LOG_STR_ARG(ModulationStrings::get_log_str(this->state_.MOD_FORMAT & 0x07, 0)), symbol_rate, bw,
+                this->output_power_effective_);
  LOG_PIN("  CS Pin: ", this->cs_);
 }

@@ -6,12 +6,7 @@ ESPHOME_LOG_TAG(TAG, "cst226.touchscreen");

 void CST226Touchscreen::setup() {
  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->reset_pin_->digital_write(true);
-    delay(5);
-    this->reset_pin_->digital_write(false);
-    delay(5);
-    this->reset_pin_->digital_write(true);
+    pulse_reset(this->reset_pin_, {.high_before_ms = 5, .low_ms = 5});
    this->set_timeout(30, [this] { this->continue_setup_(); });
  } else {
    this->continue_setup_();
@@ -43,9 +43,7 @@ void CST328Touchscreen::setup() {
 }

 void CST328Touchscreen::reset_device_() {
-  this->reset_pin_->digital_write(false);
-  delay(5);
-  this->reset_pin_->digital_write(true);
+  pulse_reset(this->reset_pin_, {.low_ms = 5});
  this->set_timeout(CST328_TRANSITION_TIMEOUT, [this] { this->continue_setup_(); });
 }

@@ -52,12 +52,7 @@ void CST816Touchscreen::continue_setup_() {

 void CST816Touchscreen::setup() {
  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->reset_pin_->digital_write(true);
-    delay(5);
-    this->reset_pin_->digital_write(false);
-    delay(5);
-    this->reset_pin_->digital_write(true);
+    pulse_reset(this->reset_pin_, {.high_before_ms = 5, .low_ms = 5});
    this->set_timeout(30, [this] { this->continue_setup_(); });
  } else {
    this->continue_setup_();
@@ -10,14 +10,7 @@ static constexpr uint32_t REREAD_TIMEOUT_ID = 1;
 static constexpr uint32_t REREAD_DELAY_MS = 20;

 void CST9220Touchscreen::setup() {
-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->reset_pin_->digital_write(true);
-    delay(5);
-    this->reset_pin_->digital_write(false);
-    delay(10);
-    this->reset_pin_->digital_write(true);
-  }
+  pulse_reset(this->reset_pin_, {.high_before_ms = 5, .low_ms = 10});
  // Wait for the controller to leave its bootloader before talking to it.
  this->set_timeout(30, [this] { this->continue_setup_(); });
 }
@@ -42,6 +42,7 @@ CONFIG_SCHEMA = cv.All(


 async def to_code(config: ConfigType) -> None:
+    cg.add_define("USE_LINE_READER")
    await uart.new_uart_component(config)


@@ -11,10 +11,10 @@
 namespace esphome::dfrobot_sen0395 {

 ESPHOME_LOG_TAG(TAG, "dfrobot_sen0395");
-static constexpr char ASCII_CR = 0x0D;
-static constexpr char ASCII_LF = 0x0A;
 static constexpr float DET_RANGE_STEP_M = 0.15f;
 static constexpr float LATENCY_STEP_S = 0.025f;
+// Sent after a reset with no line end
+static constexpr char PROMPT[] PROGMEM = "leapMMW:/>";

 // What each CommandType cannot do while the sensor runs; empty for commands that do not need it stopped
 PROGMEM_STRING_TABLE(BusyActions, "", "configure range config", "configure output latency",
@@ -121,9 +121,9 @@ bool DfrobotSen0395Component::run_command_(const Command &cmd, uint32_t now) {
    return false;  // Command not done yet
  }

-  if (this->read_message_()) {
-    if (ESPHOME_strstr_P(this->read_buffer_, ESPHOME_PSTR("is not recognized as a CLI command")) == nullptr) {
-      if (!this->handle_reply_(cmd))
+  if (const char *message = this->read_message_()) {
+    if (ESPHOME_strstr_P(message, ESPHOME_PSTR("is not recognized as a CLI command")) == nullptr) {
+      if (!this->handle_reply_(cmd, message))
        return false;         // Command not done yet
      this->read_message_();  // Skip the prompt
      return true;
@@ -146,12 +146,13 @@ bool DfrobotSen0395Component::run_command_(const Command &cmd, uint32_t now) {
 }

 void DfrobotSen0395Component::read_state_() {
-  if (!this->read_message_())
+  const char *message = this->read_message_();
+  if (message == nullptr)
    return;
-  if (ESPHOME_strstr_P(this->read_buffer_, ESPHOME_PSTR("$JYBSS,0, , , *")) != nullptr) {
+  if (ESPHOME_strstr_P(message, ESPHOME_PSTR("$JYBSS,0, , , *")) != nullptr) {
    this->set_detected_(false);
    this->set_active(true);
-  } else if (ESPHOME_strstr_P(this->read_buffer_, ESPHOME_PSTR("$JYBSS,1, , , *")) != nullptr) {
+  } else if (ESPHOME_strstr_P(message, ESPHOME_PSTR("$JYBSS,1, , , *")) != nullptr) {
    this->set_detected_(true);
    this->set_active(true);
  }
@@ -206,8 +207,7 @@ void DfrobotSen0395Component::format_command(const Command &cmd, char *buf, size
  }
 }

-bool DfrobotSen0395Component::handle_reply_(const Command &cmd) {
-  const char *message = this->read_buffer_;
+bool DfrobotSen0395Component::handle_reply_(const Command &cmd, const char *message) {
  auto is = [message](ESPHOME_PGM_P text) { return ESPHOME_strcmp_P(message, text) == 0; };

  // Commands with their own replies
@@ -230,7 +230,7 @@ bool DfrobotSen0395Component::handle_reply_(const Command &cmd) {
      }
      return true;
    case CommandType::COMMAND_TYPE_RESET_SYSTEM:
-      if (!is(ESPHOME_PSTR("leapMMW:/>")))
+      if (!is(PROMPT))
        return false;
      ESP_LOGI(TAG, "Restarted sensor.");
      return true;
@@ -300,34 +300,24 @@ bool DfrobotSen0395Component::handle_reply_(const Command &cmd) {
  return true;
 }

-bool DfrobotSen0395Component::read_message_() {
+const char *DfrobotSen0395Component::read_message_() {
  while (this->available()) {
    uint8_t byte;
    this->read_byte(&byte);
-
-    if (this->read_pos_ == MMWAVE_READ_BUFFER_LENGTH)
-      this->read_pos_ = 0;
-
-    ESP_LOGVV(TAG, "Buffer pos: %u %d", this->read_pos_, byte);
-
-    if (byte == ASCII_CR)
-      continue;
    if (byte >= 0x7F)
      byte = '?';  // needs to be valid utf8 string for log functions.
-    this->read_buffer_[this->read_pos_] = byte;
-
-    if (this->read_pos_ == 9 && byte == '>')
-      this->read_buffer_[++this->read_pos_] = ASCII_LF;
-
-    if (this->read_buffer_[this->read_pos_] == ASCII_LF) {
-      this->read_buffer_[this->read_pos_] = 0;
-      this->read_pos_ = 0;
-      ESP_LOGV(TAG, "Message: %s", this->read_buffer_);
-      return true;  // Full message in buffer
+    const char *line = this->line_reader_.feed(byte);
+    if (line == nullptr && byte == '>' && this->line_reader_.length() == sizeof(PROMPT) - 1) {
+      line = this->line_reader_.partial();
+      this->line_reader_.reset();
    }
-    this->read_pos_++;
+    if (line != nullptr) {
+      ESP_LOGV(TAG, "Message: %s", line);
+      return line;
+    }
+    this->line_reader_.log_if_overflowed(TAG);
  }
-  return false;  // No full message yet
+  return nullptr;
 }

 void DfrobotSen0395Component::set_detected_(bool detected) {
@@ -4,6 +4,7 @@
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
+#include "esphome/core/line_reader.h"

 #ifdef USE_BINARY_SENSOR
 #include "esphome/components/binary_sensor/binary_sensor.h"
@@ -14,7 +15,7 @@

 namespace esphome::dfrobot_sen0395 {

-static constexpr uint8_t MMWAVE_READ_BUFFER_LENGTH = 255;
+static constexpr uint8_t MMWAVE_READ_BUFFER_LENGTH = 253;  // largest LineReader size with a one byte position
 static constexpr uint8_t COMMAND_QUEUE_SIZE = 20;

 // Keep in sync with the BusyActions table in dfrobot_sen0395.cpp
@@ -121,8 +122,7 @@ class DfrobotSen0395Component final : public uart::UARTDevice, public Component
  bool led_active_{false};
  bool uart_presence_active_{false};
  bool start_after_boot_{false};
-  char read_buffer_[MMWAVE_READ_BUFFER_LENGTH];
-  size_t read_pos_{0};
+  LineReader<MMWAVE_READ_BUFFER_LENGTH> line_reader_;
  bool cmd_sent_{false};
  uint8_t retries_left_{2};
  StaticRingBuffer<Command, COMMAND_QUEUE_SIZE> cmd_queue_;
@@ -131,12 +131,13 @@ class DfrobotSen0395Component final : public uart::UARTDevice, public Component
  int16_t det_range_steps_[8]{};
  uint16_t latency_steps_[2]{};

-  bool read_message_();
+  /// The next complete line, valid until the next call, or nullptr
+  const char *read_message_();
  void read_state_();
  /// Run the command at the front of the queue; true when it is done
  bool run_command_(const Command &cmd, uint32_t now);
  /// Handle a reply to a sent command; true when the command is done
-  bool handle_reply_(const Command &cmd);
+  bool handle_reply_(const Command &cmd, const char *message);

  void set_detected_(bool detected);
 };
@@ -1,5 +1,6 @@
 #include "ds248x_one_wire_bus.h"
 #include "ds248x.h"
+#include "esphome/core/helpers.h"
 #include "esphome/core/log.h"

 namespace esphome::ds248x {
@@ -151,11 +152,7 @@ uint64_t DS248xOneWireBus::search_int() {
    }

    // Update address based on direction taken
-    if (dir_taken) {
-      address |= bit_mask;
-    } else {
-      address &= ~bit_mask;
-    }
+    assign_bits(address, bit_mask, dir_taken);
  }

  // Search successful
@@ -18,13 +18,11 @@ E131AddressableLightEffect = e131_ns.class_(
 )
 E131Component = e131_ns.class_("E131Component", cg.Component)

-METHODS = {"UNICAST": e131_ns.E131_UNICAST, "MULTICAST": e131_ns.E131_MULTICAST}
+E131ListenMethod = e131_ns.enum("E131ListenMethod")
+METHODS = E131ListenMethod.options("UNICAST", "MULTICAST", prefix="E131_")

-CHANNELS = {
-    "MONO": e131_ns.E131_MONO,
-    "RGB": e131_ns.E131_RGB,
-    "RGBW": e131_ns.E131_RGBW,
-}
+E131LightChannels = e131_ns.enum("E131LightChannels")
+CHANNELS = E131LightChannels.options("MONO", "RGB", "RGBW", prefix="E131_")

 CONF_UNIVERSE = "universe"
 CONF_E131_ID = "e131_id"
@@ -20,9 +20,7 @@ void EKTF2232Touchscreen::setup() {

  this->attach_interrupt_(this->interrupt_pin_, gpio::INTERRUPT_FALLING_EDGE);

-  this->reset_pin_->setup();
-
-  this->hard_reset_();
+  pulse_reset(this->reset_pin_, {.low_ms = 15, .high_after_ms = 15});
  if (!this->soft_reset_()) {
    ESP_LOGE(TAG, "Failed to soft reset EKT2232!");
    this->interrupt_pin_->detach_interrupt();
@@ -96,13 +94,6 @@ bool EKTF2232Touchscreen::get_power_state() {
  return (received[1] >> 3) & 1;
 }

-void EKTF2232Touchscreen::hard_reset_() {
-  this->reset_pin_->digital_write(false);
-  delay(15);
-  this->reset_pin_->digital_write(true);
-  delay(15);
-}
-
 bool EKTF2232Touchscreen::soft_reset_() {
  auto err = this->write(SOFT_RESET_CMD, 4);
  if (err != i2c::ERROR_OK)
@@ -22,7 +22,6 @@ class EKTF2232Touchscreen final : public Touchscreen, public i2c::I2CDevice {
  bool get_power_state();

 protected:
-  void hard_reset_();
  bool soft_reset_();
  void update_touches() override;

@@ -4,21 +4,18 @@
 #include "esphome/core/application.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
+#include "esphome/core/progmem.h"

 namespace esphome::epaper_spi {

 ESPHOME_LOG_TAG(TAG, "epaper_spi");
 static constexpr size_t EPAPER_MAX_CMD_LOG_BYTES = 128;

-static constexpr const char *const EPAPER_STATE_STRINGS[] = {
-    "IDLE",          "UPDATE",   "RESET",          "RESET_END", "SHOULD_WAIT", "INITIALISE",
-    "TRANSFER_DATA", "POWER_ON", "REFRESH_SCREEN", "POWER_OFF", "DEEP_SLEEP",
-};
+PROGMEM_STRING_TABLE(EPaperStateStrings, "IDLE", "UPDATE", "RESET", "RESET_END", "SHOULD_WAIT", "INITIALISE",
+                     "TRANSFER_DATA", "POWER_ON", "REFRESH_SCREEN", "POWER_OFF", "DEEP_SLEEP", "Unknown");

-const char *EPaperBase::epaper_state_to_string_() {
-  if (auto idx = static_cast<unsigned>(this->state_); idx < std::size(EPAPER_STATE_STRINGS))
-    return EPAPER_STATE_STRINGS[idx];
-  return "Unknown";
+const LogString *EPaperBase::epaper_state_to_string_() {
+  return EPaperStateStrings::get_log_str(static_cast<uint8_t>(this->state_), EPaperStateStrings::LAST_INDEX);
 }

 void EPaperBase::setup() {
@@ -159,7 +156,7 @@ void EPaperBase::update_effective_transform_() {

 void EPaperBase::update() {
  if (this->state_ != EPaperState::IDLE) {
-    ESP_LOGE(TAG, "Display already in state %s", epaper_state_to_string_());
+    ESP_LOGE(TAG, "Display already in state %s", LOG_STR_ARG(epaper_state_to_string_()));
    return;
  }
  this->set_state_(EPaperState::UPDATE);
@@ -212,7 +209,7 @@ void EPaperBase::loop() {
        this->high_frequency_loop_.stop();
 #if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE
      if (now - this->waiting_for_idle_last_print_ >= 1000) {
-        ESP_LOGV(TAG, "Waiting for idle in state %s", this->epaper_state_to_string_());
+        ESP_LOGV(TAG, "Waiting for idle in state %s", LOG_STR_ARG(this->epaper_state_to_string_()));
        this->waiting_for_idle_last_print_ = millis();
      }
 #endif
@@ -227,7 +224,7 @@ void EPaperBase::loop() {
 // The busy pin never cleared: give up on this update so later ones are not refused, and make the next one full
 void EPaperBase::abandon_update_() {
  ESP_LOGE(TAG, "Display stayed busy for %u s in state %s; check the busy pin", (unsigned) this->busy_timeout_seconds_,
-           this->epaper_state_to_string_());
+           LOG_STR_ARG(this->epaper_state_to_string_()));
  this->status_set_warning(LOG_STR("Busy pin timeout"));
  if (this->state_ == EPaperState::TRANSFER_DATA)
    this->abort_transfer();
@@ -247,10 +244,10 @@ void EPaperBase::abandon_update_() {
 * Should a subclassed class need to override this, the method will need to be made virtual.
 */
 void EPaperBase::process_state_() {
-  ESP_LOGV(TAG, "Process state entered in state %s", epaper_state_to_string_());
+  ESP_LOGV(TAG, "Process state entered in state %s", LOG_STR_ARG(epaper_state_to_string_()));
  switch (this->state_) {
    default:
-      ESP_LOGE(TAG, "Display is in unhandled state %s", epaper_state_to_string_());
+      ESP_LOGE(TAG, "Display is in unhandled state %s", LOG_STR_ARG(epaper_state_to_string_()));
      this->set_state_(EPaperState::IDLE);
      break;
    case EPaperState::IDLE:
@@ -342,7 +339,7 @@ void EPaperBase::process_state_() {
 }

 void EPaperBase::set_state_(EPaperState state, uint16_t delay) {
-  ESP_LOGV(TAG, "Exit state %s", this->epaper_state_to_string_());
+  ESP_LOGV(TAG, "Exit state %s", LOG_STR_ARG(this->epaper_state_to_string_()));
  this->state_ = state;
  // allow subclasses to nominate delays
  if (delay == 0)
@@ -350,7 +347,7 @@ void EPaperBase::set_state_(EPaperState state, uint16_t delay) {
  this->next_delay_ = 0;
  this->delay_until_ = millis() + delay;
  this->wait_for_idle_(state > EPaperState::SHOULD_WAIT);
-  ESP_LOGV(TAG, "Enter state %s, delay %u, wait_for_idle=%s", this->epaper_state_to_string_(), delay,
+  ESP_LOGV(TAG, "Enter state %s, delay %u, wait_for_idle=%s", LOG_STR_ARG(this->epaper_state_to_string_()), delay,
           TRUEFALSE(this->waiting_for_idle_));
  // Each step of an update otherwise waits for the next loop iteration; loop() slows down again for long waits
  if (state == EPaperState::IDLE) {
@@ -125,7 +125,7 @@ class EPaperBase : public Display,
  bool is_using_partial_update_() const { return this->full_update_every_ > 1; }
  void process_state_();

-  const char *epaper_state_to_string_();
+  const LogString *epaper_state_to_string_();
  bool is_idle_() const;
  void setup_pins_() const;
  virtual bool reset();
@@ -72,9 +72,7 @@ bool EPaperJD79660::reset() {

      // As commented on SLEEP_MS_RESET1: Reset pulse must happen within time window.
      // So do not use FSM loop, and avoid other calls/logs during pulse below.
-      this->reset_pin_->digital_write(false);
-      delay(SLEEP_MS_RESET1);
-      this->reset_pin_->digital_write(true);
+      pulse_reset(this->reset_pin_, {.low_ms = SLEEP_MS_RESET1});

      this->reset_duration_ = SLEEP_MS_RESET2;
      this->step_ = FSMState::RESET_STEP2_IDLECHECK;
@@ -33,53 +33,59 @@ void ES7210::dump_config() {
                this->channel_gains_[2], this->channel_gains_[3]);
 }

+static constexpr i2c::I2CRegValue ES7210_RESET[] PROGMEM = {
+    // Software reset
+    {ES7210_RESET_REG00, 0xff},
+    {ES7210_RESET_REG00, 0x32},
+    {ES7210_CLOCK_OFF_REG01, 0x3f},
+    // Set initialization time when device powers up
+    {ES7210_TIME_CONTROL0_REG09, 0x30},
+    {ES7210_TIME_CONTROL1_REG0A, 0x30},
+    // Configure HFP for all ADC channels
+    {ES7210_ADC12_HPF2_REG23, 0x2a},
+    {ES7210_ADC12_HPF1_REG22, 0x0a},
+    {ES7210_ADC34_HPF2_REG20, 0x0a},
+    {ES7210_ADC34_HPF1_REG21, 0x2a},
+};
+
+static constexpr i2c::I2CRegValue ES7210_ANALOG[] PROGMEM = {
+    // Configure analog power
+    {ES7210_ANALOG_REG40, 0xC3},
+    // Set mic bias
+    {ES7210_MIC12_BIAS_REG41, 0x70},
+    {ES7210_MIC34_BIAS_REG42, 0x70},
+};
+
+static constexpr i2c::I2CRegValue ES7210_POWER_ON[] PROGMEM = {
+    // Power on mics 1 through 4
+    {ES7210_MIC1_POWER_REG47, 0x08},
+    {ES7210_MIC2_POWER_REG48, 0x08},
+    {ES7210_MIC3_POWER_REG49, 0x08},
+    {ES7210_MIC4_POWER_REG4A, 0x08},
+    // Power down DLL
+    {ES7210_POWER_DOWN_REG06, 0x04},
+    // Power on MIC1-4 bias & ADC1-4 & PGA1-4 Power
+    {ES7210_MIC12_POWER_REG4B, 0x0F},
+    {ES7210_MIC34_POWER_REG4C, 0x0F},
+    // Enable device
+    {ES7210_RESET_REG00, 0x71},
+    {ES7210_RESET_REG00, 0x41},
+};
+
 void ES7210::setup() {
-  // Software reset
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_RESET_REG00, 0xff));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_RESET_REG00, 0x32));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_CLOCK_OFF_REG01, 0x3f));
-
-  // Set initialization time when device powers up
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_TIME_CONTROL0_REG09, 0x30));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_TIME_CONTROL1_REG0A, 0x30));
-
-  // Configure HFP for all ADC channels
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_ADC12_HPF2_REG23, 0x2a));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_ADC12_HPF1_REG22, 0x0a));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_ADC34_HPF2_REG20, 0x0a));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_ADC34_HPF1_REG21, 0x2a));
+  ES7210_ERROR_FAILED(this->write_registers(ES7210_RESET));

  // Secondary I2S mode settings
  ES7210_ERROR_FAILED(this->update_register(ES7210_MODE_CONFIG_REG08, 0x01, 0x00));

-  // Configure analog power
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_ANALOG_REG40, 0xC3));
-
-  // Set mic bias
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC12_BIAS_REG41, 0x70));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC34_BIAS_REG42, 0x70));
+  ES7210_ERROR_FAILED(this->write_registers(ES7210_ANALOG));

  // Configure I2S settings, sample rate, and microphone gains
  ES7210_ERROR_FAILED(this->configure_i2s_format_());
  ES7210_ERROR_FAILED(this->configure_sample_rate_());
  ES7210_ERROR_FAILED(this->configure_mic_gain_());

-  // Power on mics 1 through 4
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC1_POWER_REG47, 0x08));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC2_POWER_REG48, 0x08));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC3_POWER_REG49, 0x08));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC4_POWER_REG4A, 0x08));
-
-  // Power down DLL
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_POWER_DOWN_REG06, 0x04));
-
-  // Power on MIC1-4 bias & ADC1-4 & PGA1-4 Power
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC12_POWER_REG4B, 0x0F));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_MIC34_POWER_REG4C, 0x0F));
-
-  // Enable device
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_RESET_REG00, 0x71));
-  ES7210_ERROR_FAILED(this->write_byte(ES7210_RESET_REG00, 0x41));
+  ES7210_ERROR_FAILED(this->write_registers(ES7210_POWER_ON));

  this->setup_complete_ = true;
 }
@@ -25,56 +25,62 @@ ESPHOME_LOG_TAG(TAG, "es7243e");

 void ES7243E::dump_config() { ESP_LOGCONFIG(TAG, "ES7243E audio ADC:"); }

+// clang-format off
+static constexpr i2c::I2CRegValue ES7243E_INIT[] PROGMEM = {
+    {ES7243E_CLOCK_MGR_REG01, 0x3A},
+    {ES7243E_RESET_REG00, 0x80},
+    {ES7243E_TEST_MODE_REGF9, 0x00},
+    {ES7243E_CLOCK_MGR_REG04, 0x02},
+    {ES7243E_CLOCK_MGR_REG04, 0x01},
+    {ES7243E_TEST_MODE_REGF9, 0x01},
+    {ES7243E_RESET_REG00, 0x1E},
+    {ES7243E_CLOCK_MGR_REG01, 0x00},
+    {ES7243E_CLOCK_MGR_REG02, 0x00},
+    {ES7243E_CLOCK_MGR_REG03, 0x20},
+    {ES7243E_CLOCK_MGR_REG04, 0x01},
+    {ES7243E_ADC_CTRL_REG0D, 0x00},
+    {ES7243E_CLOCK_MGR_REG05, 0x00},
+    {ES7243E_CLOCK_MGR_REG06, 0x03},  // SCLK=MCLK/4
+    {ES7243E_CLOCK_MGR_REG07, 0x00},  // LRCK=MCLK/256
+    {ES7243E_CLOCK_MGR_REG08, 0xFF},  // LRCK=MCLK/256
+    {ES7243E_CLOCK_MGR_REG09, 0xCA},
+    {ES7243E_SDP_REG0A, 0x85},
+    {ES7243E_SDP_REG0B, 0x00},
+    {ES7243E_ADC_CTRL_REG0E, 0xBF},
+    {ES7243E_ADC_CTRL_REG0F, 0x80},
+    {ES7243E_ADC_CTRL_REG14, 0x0C},
+    {ES7243E_ADC_CTRL_REG15, 0x0C},
+    {ES7243E_ANALOG_REG17, 0x02},
+    {ES7243E_ANALOG_REG18, 0x26},
+    {ES7243E_ANALOG_REG19, 0x77},
+    {ES7243E_ANALOG_REG1A, 0xF4},
+    {ES7243E_ANALOG_REG1B, 0x66},
+    {ES7243E_ANALOG_REG1C, 0x44},
+    {ES7243E_ANALOG_REG1E, 0x00},
+    {ES7243E_ANALOG_REG1F, 0x0C},
+    {ES7243E_ANALOG_REG20, 0x1A},  // PGA gain +30dB
+    {ES7243E_ANALOG_REG21, 0x1A},
+    {ES7243E_RESET_REG00, 0x80},
+    {ES7243E_CLOCK_MGR_REG01, 0x3A},
+    {ES7243E_ANALOG_REG16, 0x3F},
+    {ES7243E_ANALOG_REG16, 0x00},
+    {ES7243E_TEST_MODE_REGF9, 0x00},
+    {ES7243E_CLOCK_MGR_REG04, 0x01},
+    {ES7243E_ANALOG_REG17, 0x01},
+};
+// clang-format on
+
+static constexpr i2c::I2CRegValue ES7243E_START[] PROGMEM = {
+    {ES7243E_RESET_REG00, 0x80},
+    {ES7243E_CLOCK_MGR_REG01, 0x3A},
+    {ES7243E_ANALOG_REG16, 0x3F},
+    {ES7243E_ANALOG_REG16, 0x00},
+};
+
 void ES7243E::setup() {
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG01, 0x3A));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_RESET_REG00, 0x80));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_TEST_MODE_REGF9, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG04, 0x02));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG04, 0x01));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_TEST_MODE_REGF9, 0x01));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_RESET_REG00, 0x1E));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG01, 0x00));
-
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG02, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG03, 0x20));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG04, 0x01));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ADC_CTRL_REG0D, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG05, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG06, 0x03));  // SCLK=MCLK/4
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG07, 0x00));  // LRCK=MCLK/256
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG08, 0xFF));  // LRCK=MCLK/256
-
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG09, 0xCA));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_SDP_REG0A, 0x85));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_SDP_REG0B, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ADC_CTRL_REG0E, 0xBF));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ADC_CTRL_REG0F, 0x80));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ADC_CTRL_REG14, 0x0C));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ADC_CTRL_REG15, 0x0C));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG17, 0x02));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG18, 0x26));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG19, 0x77));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG1A, 0xF4));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG1B, 0x66));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG1C, 0x44));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG1E, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG1F, 0x0C));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG20, 0x1A));  // PGA gain +30dB
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG21, 0x1A));
-
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_RESET_REG00, 0x80));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG01, 0x3A));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG16, 0x3F));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG16, 0x00));
-
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_TEST_MODE_REGF9, 0x00));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG04, 0x01));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG17, 0x01));
+  ES7243E_ERROR_FAILED(this->write_registers(ES7243E_INIT));
  ES7243E_ERROR_FAILED(this->configure_mic_gain_());
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_RESET_REG00, 0x80));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_CLOCK_MGR_REG01, 0x3A));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG16, 0x3F));
-  ES7243E_ERROR_FAILED(this->write_byte(ES7243E_ANALOG_REG16, 0x00));
+  ES7243E_ERROR_FAILED(this->write_registers(ES7243E_START));

  this->setup_complete_ = true;
 }
@@ -9,70 +9,54 @@ namespace esphome::es8156 {

 ESPHOME_LOG_TAG(TAG, "es8156");

-// Mark the component as failed; use only in setup
-#define ES8156_ERROR_FAILED(func) \
-  if (!(func)) { \
-    this->mark_failed(LOG_STR("Failed to initialize")); \
-    return; \
-  }
+static constexpr i2c::I2CRegValue ES8156_INIT[] PROGMEM = {
+    // REG02 MODE CONFIG 1: Enable software mode for I2C control of volume/mute
+    // Bit 2: SOFT_MODE_SEL=1 (software mode enabled)
+    {ES8156_REG02_SCLK_MODE, 0x04},
+    // Analog system configuration (active-low power down bits, active-high enables)
+    // REG20 ANALOG SYSTEM: Configure analog signal path
+    {ES8156_REG20_ANALOG_SYS1, 0x2A},
+    // REG21 ANALOG SYSTEM: VSEL=0x1C (bias level ~120%), normal VREF ramp speed
+    {ES8156_REG21_ANALOG_SYS2, 0x3C},
+    // REG22 ANALOG SYSTEM: Line out mode (HPSW=0), OUT_MUTE=0 (not muted)
+    {ES8156_REG22_ANALOG_SYS3, 0x00},
+    // REG24 ANALOG SYSTEM: Low power mode for VREFBUF, HPCOM, DACVRP; DAC normal power
+    // Bits 2:0 = 0x07: LPVREFBUF=1, LPHPCOM=1, LPDACVRP=1, LPDAC=0
+    {ES8156_REG24_ANALOG_LP, 0x07},
+    // REG23 ANALOG SYSTEM: Lowest bias (IBIAS_SW=0), VMIDLVL=VDDA/2, normal impedance
+    {ES8156_REG23_ANALOG_SYS4, 0x00},
+    // Timing and interface configuration
+    // REG0A/0B TIME CONTROL: Fast state machine transitions
+    {ES8156_REG0A_TIME_CONTROL1, 0x01},
+    {ES8156_REG0B_TIME_CONTROL2, 0x01},
+    // REG11 SDP INTERFACE CONFIG: Default I2S format (24-bit, I2S mode)
+    {ES8156_REG11_DAC_SDP, 0x00},
+    // REG19 EQ CONTROL 1: EQ disabled (EQ_ON=0), EQ_BAND_NUM=2
+    {ES8156_REG19_EQ_CONTROL1, 0x20},
+    // REG0D P2S CONTROL: Parallel-to-serial converter settings
+    {ES8156_REG0D_P2S_CONTROL, 0x14},
+    // REG09 MISC CONTROL 2: Default settings
+    {ES8156_REG09_MISC_CONTROL2, 0x00},
+    // REG18 MISC CONTROL 3: Stereo channel routing, no inversion
+    // Bits 5:4 CHN_CROSS: 0=L→L/R→R, 1=L to both, 2=R to both, 3=swap L/R
+    // Bits 3:2: LCH_INV/RCH_INV channel inversion
+    {ES8156_REG18_MISC_CONTROL3, 0x00},
+    // REG08 CLOCK OFF: Enable all internal clocks (0x3F = all clock gates open)
+    {ES8156_REG08_CLOCK_ON_OFF, 0x3F},
+    // REG00 RESET CONTROL: Reset sequence
+    // First: RST_DIG=1 (assert digital reset)
+    {ES8156_REG00_RESET, 0x02},
+    // Then: CSM_ON=1 (enable chip state machine), RST_DIG=1
+    {ES8156_REG00_RESET, 0x03},
+    // REG25 ANALOG SYSTEM: Power up analog blocks
+    // VMIDSEL=2 (normal VMID operation), PDN_ANA=0, ENREFR=0, ENHPCOM=0
+    // PDN_DACVREFGEN=0, PDN_VREFBUF=0, PDN_DAC=0 (all enabled)
+    {ES8156_REG25_ANALOG_SYS5, 0x20},
+};

 void ES8156::setup() {
-  // REG02 MODE CONFIG 1: Enable software mode for I2C control of volume/mute
-  // Bit 2: SOFT_MODE_SEL=1 (software mode enabled)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG02_SCLK_MODE, 0x04));
-
-  // Analog system configuration (active-low power down bits, active-high enables)
-  // REG20 ANALOG SYSTEM: Configure analog signal path
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG20_ANALOG_SYS1, 0x2A));
-
-  // REG21 ANALOG SYSTEM: VSEL=0x1C (bias level ~120%), normal VREF ramp speed
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG21_ANALOG_SYS2, 0x3C));
-
-  // REG22 ANALOG SYSTEM: Line out mode (HPSW=0), OUT_MUTE=0 (not muted)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG22_ANALOG_SYS3, 0x00));
-
-  // REG24 ANALOG SYSTEM: Low power mode for VREFBUF, HPCOM, DACVRP; DAC normal power
-  // Bits 2:0 = 0x07: LPVREFBUF=1, LPHPCOM=1, LPDACVRP=1, LPDAC=0
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG24_ANALOG_LP, 0x07));
-
-  // REG23 ANALOG SYSTEM: Lowest bias (IBIAS_SW=0), VMIDLVL=VDDA/2, normal impedance
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG23_ANALOG_SYS4, 0x00));
-
-  // Timing and interface configuration
-  // REG0A/0B TIME CONTROL: Fast state machine transitions
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0A_TIME_CONTROL1, 0x01));
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0B_TIME_CONTROL2, 0x01));
-
-  // REG11 SDP INTERFACE CONFIG: Default I2S format (24-bit, I2S mode)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG11_DAC_SDP, 0x00));
-
-  // REG19 EQ CONTROL 1: EQ disabled (EQ_ON=0), EQ_BAND_NUM=2
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG19_EQ_CONTROL1, 0x20));
-
-  // REG0D P2S CONTROL: Parallel-to-serial converter settings
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0D_P2S_CONTROL, 0x14));
-
-  // REG09 MISC CONTROL 2: Default settings
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG09_MISC_CONTROL2, 0x00));
-
-  // REG18 MISC CONTROL 3: Stereo channel routing, no inversion
-  // Bits 5:4 CHN_CROSS: 0=L→L/R→R, 1=L to both, 2=R to both, 3=swap L/R
-  // Bits 3:2: LCH_INV/RCH_INV channel inversion
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG18_MISC_CONTROL3, 0x00));
-
-  // REG08 CLOCK OFF: Enable all internal clocks (0x3F = all clock gates open)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG08_CLOCK_ON_OFF, 0x3F));
-
-  // REG00 RESET CONTROL: Reset sequence
-  // First: RST_DIG=1 (assert digital reset)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG00_RESET, 0x02));
-  // Then: CSM_ON=1 (enable chip state machine), RST_DIG=1
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG00_RESET, 0x03));
-
-  // REG25 ANALOG SYSTEM: Power up analog blocks
-  // VMIDSEL=2 (normal VMID operation), PDN_ANA=0, ENREFR=0, ENHPCOM=0
-  // PDN_DACVREFGEN=0, PDN_VREFBUF=0, PDN_DAC=0 (all enabled)
-  ES8156_ERROR_FAILED(this->write_byte(ES8156_REG25_ANALOG_SYS5, 0x20));
+  if (!this->write_registers(ES8156_INIT))
+    this->mark_failed(LOG_STR("Failed to initialize"));
 }

 void ES8156::dump_config() { ESP_LOGCONFIG(TAG, "ES8156 Audio Codec:"); }
@@ -22,79 +22,76 @@ ESPHOME_LOG_TAG(TAG, "es8388");
    return false; \
  }

+static constexpr i2c::I2CRegValue ES8388_INIT[] PROGMEM = {
+    // I2S worker mode
+    {ES8388_MASTERMODE, 0x00},
+    /* Chip Control and Power Management */
+    {ES8388_CONTROL2, 0x50},
+    // normal all and power up all
+    {ES8388_CHIPPOWER, 0x00},
+    // vmidsel/500k
+    // EnRef=0,Play&Record Mode,(0x17-both of mic&play)
+    {ES8388_CONTROL1, 0x12},
+    // i2s 16 bits
+    {ES8388_DACCONTROL1, 0x18},
+    // sample freq 256
+    // DACFsMode,SINGLE SPEED; DACFsRatio,256
+    {ES8388_DACCONTROL2, 0x02},
+    // 0x00 audio on LIN1&RIN1,  0x09 LIN2&RIN2
+    {ES8388_DACCONTROL16, 0x00},
+    // only left DAC to left mixer enable 0db
+    {ES8388_DACCONTROL17, 0x90},
+    // only right DAC to right mixer enable 0db
+    {ES8388_DACCONTROL20, 0x90},
+    // set internal ADC and DAC use the same LRCK clock, ADC LRCK as internal LRCK
+    {ES8388_DACCONTROL21, 0x80},
+    // vroi=0 - 1.5k VREF to analog output resistance (default)
+    {ES8388_DACCONTROL23, 0x00},
+    // power down adc and line in
+    {ES8388_ADCPOWER, 0xFF},
+    //@nightdav
+    {ES8388_ADCCONTROL1, 0x00},  // +21dB : recommended value for ALC & voice recording
+    // set to Mono Right
+    {ES8388_ADCCONTROL3, 0x02},
+    // I2S 16 Bits length and I2S serial audio data format
+    {ES8388_ADCCONTROL4, 0x0d},
+    // ADCFsMode,singel SPEED,RATIO=256
+    {ES8388_ADCCONTROL5, 0x02},
+    // ADC Volume
+    {ES8388_ADCCONTROL8, 0x00},
+    {ES8388_ADCCONTROL9, 0x00},
+    //@nightDav
+    // ALC Config (as recommended by ES8388 user guide for voice recording)
+    // Reg 0x12 = 0xe2 (ALC enable, PGA Max. Gain=23.5dB, Min. Gain=0dB)
+    {ES8388_ADCCONTROL10, 0xe2},
+    // Reg 0x13 = 0xa0 (ALC Target=-1.5dB, ALC Hold time =0 mS)
+    {ES8388_ADCCONTROL11, 0xa0},
+    // Reg 0x14 = 0x12(Decay time =820uS , Attack time = 416 uS)
+    {ES8388_ADCCONTROL12, 0x12},
+    // Reg 0x15 = 0x06(ALC mode)
+    {ES8388_ADCCONTROL13, 0x06},
+    // Reg 0x16 = 0xc3(nose gate = -40.5dB, NGG = 0x01(mute ADC))
+    {ES8388_ADCCONTROL14, 0xc3},
+    // Power on ADC
+    {ES8388_DACCONTROL21, 0x80},
+    // Start state machine
+    {ES8388_CHIPPOWER, 0xF0},
+};
+
+static constexpr i2c::I2CRegValue ES8388_UNMUTE[] PROGMEM = {
+    // unmute ADC with fade in
+    {ES8388_ADCCONTROL7, 0x60},
+    // unmute DAC with fade in
+    {ES8388_DACCONTROL3, 0x20},
+    // Power on ADC, Enable LIN&RIN, Power off MICBIAS, set int1lp to low power mode
+    {ES8388_ADCPOWER, 0x09},
+};
+
 void ES8388::setup() {
  // mute DAC
  this->set_mute_state_(true);

-  // I2S worker mode
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_MASTERMODE, 0x00));
-
-  /* Chip Control and Power Management */
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_CONTROL2, 0x50));
-  // normal all and power up all
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_CHIPPOWER, 0x00));
-
-  // vmidsel/500k
-  // EnRef=0,Play&Record Mode,(0x17-both of mic&play)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_CONTROL1, 0x12));
-
-  // i2s 16 bits
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL1, 0x18));
-  // sample freq 256
-  // DACFsMode,SINGLE SPEED; DACFsRatio,256
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL2, 0x02));
-  // 0x00 audio on LIN1&RIN1,  0x09 LIN2&RIN2
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL16, 0x00));
-  // only left DAC to left mixer enable 0db
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL17, 0x90));
-  // only right DAC to right mixer enable 0db
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL20, 0x90));
-  // set internal ADC and DAC use the same LRCK clock, ADC LRCK as internal LRCK
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL21, 0x80));
-  // vroi=0 - 1.5k VREF to analog output resistance (default)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL23, 0x00));
-
-  // power down adc and line in
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCPOWER, 0xFF));
-
-  //@nightdav
-  ES8388_ERROR_FAILED(
-      this->write_byte(ES8388_ADCCONTROL1, 0x00));  // +21dB : recommended value for ALC & voice recording
-
-  // set to Mono Right
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL3, 0x02));
-
-  // I2S 16 Bits length and I2S serial audio data format
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL4, 0x0d));
-  // ADCFsMode,singel SPEED,RATIO=256
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL5, 0x02));
-
-  // ADC Volume
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL8, 0x00));
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL9, 0x00));
-
-  //@nightDav
-  // ALC Config (as recommended by ES8388 user guide for voice recording)
-
-  // Reg 0x12 = 0xe2 (ALC enable, PGA Max. Gain=23.5dB, Min. Gain=0dB)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL10, 0xe2));
-
-  // Reg 0x13 = 0xa0 (ALC Target=-1.5dB, ALC Hold time =0 mS)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL11, 0xa0));
-  // Reg 0x14 = 0x12(Decay time =820uS , Attack time = 416 uS)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL12, 0x12));
-
-  // Reg 0x15 = 0x06(ALC mode)
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL13, 0x06));
-
-  // Reg 0x16 = 0xc3(nose gate = -40.5dB, NGG = 0x01(mute ADC))
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL14, 0xc3));
-
-  // Power on ADC
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL21, 0x80));
-
-  // Start state machine
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_CHIPPOWER, 0xF0));
+  ES8388_ERROR_FAILED(this->write_registers(ES8388_INIT));
  delay(1);
  ES8388_ERROR_FAILED(this->write_byte(ES8388_CHIPPOWER, 0x00));

@@ -104,13 +101,7 @@ void ES8388::setup() {

  this->set_mute_state_(false);

-  // unmute ADC with fade in
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCCONTROL7, 0x60));
-  // unmute DAC with fade in
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_DACCONTROL3, 0x20));
-
-  // Power on ADC, Enable LIN&RIN, Power off MICBIAS, set int1lp to low power mode
-  ES8388_ERROR_FAILED(this->write_byte(ES8388_ADCPOWER, 0x09));
+  ES8388_ERROR_FAILED(this->write_registers(ES8388_UNMUTE));

 #ifdef USE_ES8388_SELECT
  if (this->dac_output_select_ != nullptr) {
@@ -152,8 +143,8 @@ void ES8388::dump_config() {
  ESP_LOGCONFIG(TAG, "ES8388 Audio Codec:");
  LOG_I2C_DEVICE(this);
 #ifdef USE_ES8388_SELECT
-  LOG_SELECT("  ", "DacOutputSelect", this->dac_output_select_);
-  LOG_SELECT("  ", "ADCInputMicSelect", this->adc_input_mic_select_);
+  LOG_SELECT("  ", "DAC Output", this->dac_output_select_);
+  LOG_SELECT("  ", "ADC Input Mic", this->adc_input_mic_select_);
 #endif
 }

@@ -24,14 +24,12 @@ ADC_INPUT_MIC_OPTIONS = AdcInputMicLine.options(
 )
 ADC_INPUT_MIC_OPTION_NAMES = list(ADC_INPUT_MIC_OPTIONS)

-DacOutputSelect = es8388_ns.class_("DacOutputSelect", select.Select)
-ADCInputMicSelect = es8388_ns.class_("ADCInputMicSelect", select.Select)

 CONFIG_SCHEMA = cv.All(
    {
        cv.GenerateID(CONF_ES8388_ID): cv.use_id(ES8388),
        cv.Optional(CONF_DAC_OUTPUT): select.select_schema(
-            DacOutputSelect,
+            select.ApplySelect,
            entity_category=ENTITY_CATEGORY_CONFIG,
            icon=ICON_CHIP,
        ).extend(
@@ -42,7 +40,7 @@ CONFIG_SCHEMA = cv.All(
            }
        ),
        cv.Optional(CONF_ADC_INPUT_MIC): select.select_schema(
-            ADCInputMicSelect,
+            select.ApplySelect,
            entity_category=ENTITY_CATEGORY_CONFIG,
            icon=ICON_CHIP,
        ).extend(
@@ -61,12 +59,18 @@ async def to_code(config: ConfigType) -> None:
    hub = await cg.get_variable(config[CONF_ES8388_ID])
    selects = select.sub_selects(config, parent=hub)
    await selects(
-        CONF_DAC_OUTPUT, hub.set_dac_output_select, options=DAC_OUTPUT_OPTION_NAMES
+        CONF_DAC_OUTPUT,
+        hub.set_dac_output_select,
+        options=DAC_OUTPUT_OPTION_NAMES,
+        apply="set_dac_output(static_cast<es8388::DacOutputLine>(index))",
+        publish="before",
    )
    await selects(
        CONF_ADC_INPUT_MIC,
        hub.set_adc_input_mic_select,
        options=ADC_INPUT_MIC_OPTION_NAMES,
+        apply="set_adc_input_mic(static_cast<es8388::AdcInputMicLine>(index))",
+        publish="before",
    )
    if (
        initial := config.get(CONF_DAC_OUTPUT, {}).get(CONF_INITIAL_OPTION)
@@ -1,10 +0,0 @@
-#include "adc_input_mic_select.h"
-
-namespace esphome::es8388 {
-
-void ADCInputMicSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_adc_input_mic(static_cast<AdcInputMicLine>(index));
-}
-
-}  // namespace esphome::es8388
@@ -1,13 +0,0 @@
-#pragma once
-
-#include "esphome/components/es8388/es8388.h"
-#include "esphome/components/select/select.h"
-
-namespace esphome::es8388 {
-
-class ADCInputMicSelect final : public select::Select, public Parented<ES8388> {
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::es8388
@@ -1,10 +0,0 @@
-#include "dac_output_select.h"
-
-namespace esphome::es8388 {
-
-void DacOutputSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_dac_output(static_cast<DacOutputLine>(index));
-}
-
-}  // namespace esphome::es8388
@@ -1,13 +0,0 @@
-#pragma once
-
-#include "esphome/components/es8388/es8388.h"
-#include "esphome/components/select/select.h"
-
-namespace esphome::es8388 {
-
-class DacOutputSelect final : public select::Select, public Parented<ES8388> {
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::es8388
@@ -114,7 +114,8 @@ BLECharacteristicNotifyAction = esp32_ble_server_automations_ns.class_(
    "BLECharacteristicNotifyAction", automation.Action
 )
 bytebuffer_ns = cg.esphome_ns.namespace("bytebuffer")
-Endianness_ns = bytebuffer_ns.namespace("Endian")
+# Unscoped in C++; is_class keeps the generated Endian::LITTLE spelling
+Endian = bytebuffer_ns.enum("Endian", is_class=True)


 PROPERTY_MAP = {
@@ -410,10 +411,7 @@ def value_schema(default_type=UNDEFINED, templatable=True):
                ),
                cv.Optional(CONF_STRING_ENCODING, default="utf_8"): validate_encoding,
                cv.Optional(CONF_ENDIANNESS, default="LITTLE"): cv.enum(
-                    {
-                        "LITTLE": Endianness_ns.LITTLE,
-                        "BIG": Endianness_ns.BIG,
-                    }
+                    Endian.options("LITTLE", "BIG")
                ),
            },
            validate_value_type,
@@ -54,25 +54,21 @@ CAN_MODES = {
 # The supported bit rates differ between ESP32 variants.
 # See ESP-IDF Programming Guide --> API Reference --> Two-Wire Automotive Interface (TWAI)

-CAN_SPEEDS_ESP32 = {
-    "20KBPS": CanSpeed.CAN_20KBPS,
-    "25KBPS": CanSpeed.CAN_25KBPS,
-    "50KBPS": CanSpeed.CAN_50KBPS,
-    "100KBPS": CanSpeed.CAN_100KBPS,
-    "125KBPS": CanSpeed.CAN_125KBPS,
-    "250KBPS": CanSpeed.CAN_250KBPS,
-    "500KBPS": CanSpeed.CAN_500KBPS,
-    "800KBPS": CanSpeed.CAN_800KBPS,
-    "1000KBPS": CanSpeed.CAN_1000KBPS,
-}
+CAN_SPEEDS_ESP32 = CanSpeed.options(
+    "20KBPS",
+    "25KBPS",
+    "50KBPS",
+    "100KBPS",
+    "125KBPS",
+    "250KBPS",
+    "500KBPS",
+    "800KBPS",
+    "1000KBPS",
+    prefix="CAN_",
+)

 CAN_SPEEDS_ESP32_S2 = {
-    "1KBPS": CanSpeed.CAN_1KBPS,
-    "5KBPS": CanSpeed.CAN_5KBPS,
-    "10KBPS": CanSpeed.CAN_10KBPS,
-    "12K5BPS": CanSpeed.CAN_12K5BPS,
-    "16KBPS": CanSpeed.CAN_16KBPS,
-    "20KBPS": CanSpeed.CAN_20KBPS,
+    **CanSpeed.options("1KBPS", "5KBPS", "10KBPS", "12K5BPS", "16KBPS", prefix="CAN_"),
    **CAN_SPEEDS_ESP32,
 }

@@ -1,4 +1,5 @@
 #include "led_strip.h"
+#include <algorithm>
 #include <cinttypes>

 #ifdef USE_ESP32
@@ -14,6 +15,8 @@ namespace esphome::esp32_rmt_led_strip {
 ESPHOME_LOG_TAG(TAG, "esp32_rmt_led_strip");

 static const size_t RMT_SYMBOLS_PER_BYTE = 8;
+// Idle time the line must stay low between frames so the strip latches
+static constexpr uint32_t RESET_GAP_US = 50;

 // Query the RMT default clock source frequency. This varies by variant:
 // APB (80MHz) on ESP32/S2/S3/C3, PLL_F80M (80MHz) on C6/P4, XTAL (32MHz) on H2.
@@ -91,10 +94,20 @@ void ESP32RMTLEDStripLightOutput::setup() {
  this->rmt_buf_ = rmt_allocator.allocate(buffer_size * 8 + 1);
 #endif

+  const uint32_t resolution_hz = rmt_resolution_hz();
+  // Longest wire time of one frame; write_state() defers instead of blocking until it has elapsed
+  uint32_t bit_ticks = std::max(this->params_.bit0.duration0 + this->params_.bit0.duration1,
+                                this->params_.bit1.duration0 + this->params_.bit1.duration1);
+  uint64_t frame_ticks = (uint64_t) bit_ticks * buffer_size * RMT_SYMBOLS_PER_BYTE + this->params_.reset.duration0 +
+                         this->params_.reset.duration1;
+  this->frame_time_us_ = frame_ticks * 1000000 / resolution_hz + RESET_GAP_US;
+  // Seed with the interval write_state() gates on, so the first frame is not deferred
+  this->last_refresh_ = micros() - std::max(this->frame_time_us_, this->max_refresh_rate_);
+
  rmt_tx_channel_config_t channel;
  memset(&channel, 0, sizeof(channel));
  channel.clk_src = RMT_CLK_SRC_DEFAULT;
-  channel.resolution_hz = rmt_resolution_hz();
+  channel.resolution_hz = resolution_hz;
  channel.gpio_num = gpio_num_t(this->pin_);
  channel.mem_block_symbols = this->rmt_symbols_;
  channel.trans_queue_depth = 1;
@@ -157,22 +170,21 @@ void ESP32RMTLEDStripLightOutput::set_led_params(uint32_t bit0_high, uint32_t bi
 }

 void ESP32RMTLEDStripLightOutput::write_state(light::LightState *state) {
-  uint32_t now = micros();
-  if (this->throttle_show_(now, this->last_refresh_, this->max_refresh_rate_))
+  // Previous frame still on the wire, inside its reset gap, or refreshing too often: try again next loop
+  if (this->throttle_show_(micros(), this->last_refresh_, std::max(this->frame_time_us_, this->max_refresh_rate_)))
    return;
-  this->last_refresh_ = now;
+
+  // The gate above should always cover the previous frame; never overwrite rmt_buf_ while the RMT still reads it
+  if (rmt_tx_wait_all_done(this->channel_, 0) != ESP_OK) {
+    ESP_LOGE(TAG, "RMT TX still busy");
+    this->status_set_warning();
+    this->schedule_show();
+    return;
+  }
  this->mark_shown_();

  ESP_LOGVV(TAG, "Writing RGB values to bus");

-  esp_err_t error = rmt_tx_wait_all_done(this->channel_, 1000);
-  if (error != ESP_OK) {
-    ESP_LOGE(TAG, "RMT TX timeout");
-    this->status_set_warning();
-    return;
-  }
-  delayMicroseconds(50);
-
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
  memcpy(this->rmt_buf_, this->buf_, this->get_buffer_size_());
 #else
@@ -203,13 +215,19 @@ void ESP32RMTLEDStripLightOutput::write_state(light::LightState *state) {
  rmt_transmit_config_t config;
  memset(&config, 0, sizeof(config));
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
-  error = rmt_transmit(this->channel_, this->encoder_, this->rmt_buf_, this->get_buffer_size_(), &config);
+  esp_err_t error = rmt_transmit(this->channel_, this->encoder_, this->rmt_buf_, this->get_buffer_size_(), &config);
 #else
-  error = rmt_transmit(this->channel_, this->encoder_, this->rmt_buf_, len * sizeof(rmt_symbol_word_t), &config);
+  esp_err_t error =
+      rmt_transmit(this->channel_, this->encoder_, this->rmt_buf_, len * sizeof(rmt_symbol_word_t), &config);
 #endif
  if (!this->status_comm_result(error == ESP_OK, nullptr)) {
    ESP_LOGE(TAG, "RMT TX error");
+    // retry next loop iteration so the frame is not lost
+    this->schedule_show();
+    return;
  }
+  // Stamped after the transfer started so the gate above stays conservative
+  this->last_refresh_ = micros();
 }

 void ESP32RMTLEDStripLightOutput::dump_config() {
@@ -81,6 +81,8 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {

  uint32_t last_refresh_{0};
  uint32_t max_refresh_rate_{0};
+  // Worst-case wire time of one frame plus the reset gap, computed in setup()
+  uint32_t frame_time_us_{0};
 };

 }  // namespace esphome::esp32_rmt_led_strip
@@ -9,24 +9,23 @@ from .. import (
    CONF_ESPECTRE_ID,
    DOMAIN,
    ESPectreComponent,
-    espectre_ns,
    supported_traffic_generator_modes,
 )

 DEPENDENCIES = ["espectre"]

-TrafficModeSelect = espectre_ns.class_(
-    "TrafficModeSelect", select.Select, cg.Parented.template(ESPectreComponent)
-)

 CONFIG_SCHEMA = select.select_schema(
-    TrafficModeSelect, entity_category=ENTITY_CATEGORY_CONFIG
+    select.ApplySelect, entity_category=ENTITY_CATEGORY_CONFIG
 ).extend({cv.GenerateID(CONF_ESPECTRE_ID): cv.use_id(ESPectreComponent)})


 async def to_code(config: ConfigType) -> None:
    options = supported_traffic_generator_modes(CORE.config[DOMAIN])
-    var = await select.new_select(config, options=options)
-    await cg.register_parented(var, config[CONF_ESPECTRE_ID])
-    parent = await cg.get_variable(config[CONF_ESPECTRE_ID])
-    cg.add(parent.set_traffic_mode_select(var))
+    hub = await cg.get_variable(config[CONF_ESPECTRE_ID])
+    await select.sub_selects(config, parent=hub).create(
+        config,
+        hub.set_traffic_mode_select,
+        options=options,
+        apply="request_traffic_generator_mode(option)",
+    )
@@ -1,11 +0,0 @@
-#include "espectre_select.h"
-
-#ifdef USE_ESPECTRE
-
-namespace esphome::espectre {
-
-void TrafficModeSelect::control(size_t index) { this->parent_->request_traffic_generator_mode(this->option_at(index)); }
-
-}  // namespace esphome::espectre
-
-#endif  // USE_ESPECTRE
@@ -1,19 +0,0 @@
-#pragma once
-
-#include "esphome/core/defines.h"
-
-#ifdef USE_ESPECTRE
-
-#include "esphome/components/select/select.h"
-#include "../espectre.h"
-
-namespace esphome::espectre {
-
-class TrafficModeSelect final : public select::Select, public Parented<ESPectreComponent> {
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::espectre
-
-#endif  // USE_ESPECTRE
@@ -1,14 +1,14 @@
 #include "ezo.h"
 #include "esphome/core/log.h"
 #include "esphome/core/hal.h"
+#include "esphome/core/progmem.h"

 namespace esphome::ezo {

-static const char *const EZO_COMMAND_TYPE_STRINGS[] = {"EZO_READ",  "EZO_LED",         "EZO_DEVICE_INFORMATION",
-                                                       "EZO_SLOPE", "EZO_CALIBRATION", "EZO_SLEEP",
-                                                       "EZO_I2C",   "EZO_T",           "EZO_CUSTOM"};
+PROGMEM_STRING_TABLE(EzoCommandTypeStrings, "EZO_READ", "EZO_LED", "EZO_DEVICE_INFORMATION", "EZO_SLOPE",
+                     "EZO_CALIBRATION", "EZO_SLEEP", "EZO_I2C", "EZO_T", "EZO_CUSTOM");

-static const char *const EZO_CALIBRATION_TYPE_STRINGS[] = {"LOW", "MID", "HIGH"};
+PROGMEM_STRING_TABLE(EzoCalibrationTypeStrings, "LOW", "MID", "HIGH");

 void EZOSensor::dump_config() {
  LOG_SENSOR("", "EZO", this);
@@ -103,7 +103,8 @@ void EZOSensor::loop() {
      break;
  }

-  ESP_LOGV(TAG, "Received buffer \"%s\" for command type %s", &buf[1], EZO_COMMAND_TYPE_STRINGS[to_run->command_type]);
+  ESP_LOGV(TAG, "Received buffer \"%s\" for command type %s", &buf[1],
+           LOG_STR_ARG(EzoCommandTypeStrings::get_log_str(to_run->command_type, EzoCommandTypeStrings::LAST_INDEX)));

  if (buf[0] == 1) {
    std::string payload = reinterpret_cast<char *>(&buf[1]);
@@ -168,7 +169,9 @@ void EZOSensor::add_command_(const char *command, EzoCommandType command_type, u
 void EZOSensor::set_calibration_point_(EzoCalibrationType type, float value) {
  // max 21: "Cal,"(4) + type(4) + ","(1) + float(11) + null; use 24 for safety
  char payload[24];
-  snprintf(payload, sizeof(payload), "Cal,%s,%0.2f", EZO_CALIBRATION_TYPE_STRINGS[type], value);
+  ESPHOME_snprintf_P(payload, sizeof(payload), ESPHOME_PSTR("Cal,%s,%0.2f"),
+                     LOG_STR_ARG(EzoCalibrationTypeStrings::get_log_str(type, EzoCalibrationTypeStrings::LAST_INDEX)),
+                     value);
  this->add_command_(payload, EzoCommandType::EZO_CALIBRATION, 900);
 }

@@ -176,7 +179,7 @@ void EZOSensor::set_address(uint8_t address) {
  if (address > 0 && address < 128) {
    // max 8: "I2C,"(4) + uint8(3) + null
    char payload[8];
-    snprintf(payload, sizeof(payload), "I2C,%u", address);
+    ESPHOME_snprintf_P(payload, sizeof(payload), ESPHOME_PSTR("I2C,%u"), address);
    this->new_address_ = address;
    this->add_command_(payload, EzoCommandType::EZO_I2C);
  } else {
@@ -197,7 +200,7 @@ void EZOSensor::get_t() { this->add_command_("T,?", EzoCommandType::EZO_T); }
 void EZOSensor::set_t(float value) {
  // max 14 bytes: "T,"(2) + float with "%0.2f" (up to 11 chars) + null(1); use 16 for alignment
  char payload[16];
-  snprintf(payload, sizeof(payload), "T,%0.2f", value);
+  ESPHOME_snprintf_P(payload, sizeof(payload), ESPHOME_PSTR("T,%0.2f"), value);
  this->add_command_(payload, EzoCommandType::EZO_T);
 }

@@ -220,7 +223,7 @@ void EZOSensor::set_calibration_point_high(float value) {
 void EZOSensor::set_calibration_generic(float value) {
  // exact 16 bytes: "Cal," (4) + float with "%0.2f" (up to 11 chars, e.g. "-9999999.99") + null (1) = 16
  char payload[16];
-  snprintf(payload, sizeof(payload), "Cal,%0.2f", value);
+  ESPHOME_snprintf_P(payload, sizeof(payload), ESPHOME_PSTR("Cal,%0.2f"), value);
  this->add_command_(payload, EzoCommandType::EZO_CALIBRATION, 900);
 }

@@ -34,10 +34,7 @@ void FT63X6Touchscreen::setup() {
    this->attach_interrupt_(this->interrupt_pin_, gpio::INTERRUPT_ANY_EDGE);
  }

-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->hard_reset_();
-  }
+  pulse_reset(this->reset_pin_, {.low_ms = 10});

  // Get touch resolution
  if (this->x_raw_max_ == this->x_raw_min_) {
@@ -57,14 +54,6 @@ void FT63X6Touchscreen::setup() {
  this->write_byte(FT6X36_ADDR_TOUCHRATE_ACTIVE, 0x0E);
 }

-void FT63X6Touchscreen::hard_reset_() {
-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->digital_write(false);
-    delay(10);
-    this->reset_pin_->digital_write(true);
-  }
-}
-
 void FT63X6Touchscreen::dump_config() {
  ESP_LOGCONFIG(TAG, "FT63X6 Touchscreen:");
  LOG_I2C_DEVICE(this);
@@ -27,7 +27,6 @@ class FT63X6Touchscreen final : public Touchscreen, public i2c::I2CDevice {
  void set_threshold(uint8_t threshold) { this->threshold_ = threshold; }

 protected:
-  void hard_reset_();
  void update_touches() override;

  InternalGPIOPin *interrupt_pin_{nullptr};
@@ -83,13 +83,7 @@ void GSL3670Touchscreen::update_touches() {
 void GSL3670Touchscreen::clear_reg_() {
  ESP_LOGD(TAG, "clear_reg");

-  // GPIO reset pulse
-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->digital_write(false);
-    delay(1);
-    this->reset_pin_->digital_write(true);
-    delay(5);
-  }
+  pulse_reset(this->reset_pin_, {.low_ms = 1, .high_after_ms = 5});

  this->write_reg8_(0x88, 0x01);
  // delay(5);
@@ -106,12 +100,7 @@ void GSL3670Touchscreen::clear_reg_() {
 void GSL3670Touchscreen::reset_() {
  ESP_LOGD(TAG, "reset");

-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->digital_write(false);
-    delay(1);
-    this->reset_pin_->digital_write(true);
-    delay(5);
-  }
+  pulse_reset(this->reset_pin_, {.low_ms = 1, .high_after_ms = 5});

  this->write_reg8_(0xe4, 0x04);

@@ -3,7 +3,11 @@ import logging
 from esphome import automation
 import esphome.codegen as cg
 from esphome.components import climate, logger, uart
-from esphome.components.climate import ClimateMode, ClimatePreset, ClimateSwingMode
+from esphome.components.climate import (
+    CLIMATE_MODES,
+    CLIMATE_PRESETS,
+    CLIMATE_SWING_MODES,
+)
 from esphome.components.logger import DOMAIN as LOGGER_DOMAIN
 from esphome.components.wifi import DOMAIN as WIFI_DOMAIN
 import esphome.config_validation as cv
@@ -77,31 +81,19 @@ AIRFLOW_HORIZONTAL_DIRECTION_OPTIONS = AirflowHorizontalDirection.options(
 )

 SUPPORTED_SWING_MODES_OPTIONS = {
-    "OFF": ClimateSwingMode.CLIMATE_SWING_OFF,
-    "VERTICAL": ClimateSwingMode.CLIMATE_SWING_VERTICAL,
-    "HORIZONTAL": ClimateSwingMode.CLIMATE_SWING_HORIZONTAL,
-    "BOTH": ClimateSwingMode.CLIMATE_SWING_BOTH,
+    k: CLIMATE_SWING_MODES[k] for k in ("OFF", "VERTICAL", "HORIZONTAL", "BOTH")
 }

 SUPPORTED_CLIMATE_MODES_OPTIONS = {
-    "OFF": ClimateMode.CLIMATE_MODE_OFF,  # always available
-    "HEAT_COOL": ClimateMode.CLIMATE_MODE_HEAT_COOL,  # always available
-    "COOL": ClimateMode.CLIMATE_MODE_COOL,
-    "HEAT": ClimateMode.CLIMATE_MODE_HEAT,
-    "DRY": ClimateMode.CLIMATE_MODE_DRY,
-    "FAN_ONLY": ClimateMode.CLIMATE_MODE_FAN_ONLY,
+    k: CLIMATE_MODES[k] for k in ("OFF", "HEAT_COOL", "COOL", "HEAT", "DRY", "FAN_ONLY")
 }

 SUPPORTED_CLIMATE_PRESETS_SMARTAIR2_OPTIONS = {
-    "AWAY": ClimatePreset.CLIMATE_PRESET_AWAY,
-    "BOOST": ClimatePreset.CLIMATE_PRESET_BOOST,
-    "COMFORT": ClimatePreset.CLIMATE_PRESET_COMFORT,
+    k: CLIMATE_PRESETS[k] for k in ("AWAY", "BOOST", "COMFORT")
 }

 SUPPORTED_CLIMATE_PRESETS_HON_OPTIONS = {
-    "AWAY": ClimatePreset.CLIMATE_PRESET_AWAY,
-    "BOOST": ClimatePreset.CLIMATE_PRESET_BOOST,
-    "SLEEP": ClimatePreset.CLIMATE_PRESET_SLEEP,
+    k: CLIMATE_PRESETS[k] for k in ("AWAY", "BOOST", "SLEEP")
 }

 HonControlMethod = haier_ns.enum("HonControlMethod", True)
@@ -6,6 +6,7 @@
 #include "esphome/components/wifi/wifi_component.h"
 #endif
 #include "haier_base.h"
+#include "esphome/core/progmem.h"

 using namespace esphome::climate;
 using namespace esphome::uart;
@@ -19,28 +20,16 @@ constexpr size_t PROTOCOL_INITIALIZATION_INTERVAL = 10000;
 constexpr size_t DEFAULT_MESSAGES_INTERVAL_MS = 2000;
 constexpr size_t CONTROL_MESSAGES_INTERVAL_MS = 400;

-const char *HaierClimateBase::phase_to_string_(ProtocolPhases phase) {
-  static const char *phase_names[] = {
-      "SENDING_INIT_1",
-      "SENDING_INIT_2",
-      "SENDING_FIRST_STATUS_REQUEST",
-      "SENDING_FIRST_ALARM_STATUS_REQUEST",
-      "IDLE",
-      "SENDING_STATUS_REQUEST",
-      "SENDING_UPDATE_SIGNAL_REQUEST",
-      "SENDING_SIGNAL_LEVEL",
-      "SENDING_CONTROL",
-      "SENDING_ACTION_COMMAND",
-      "SENDING_ALARM_STATUS_REQUEST",
-      "UNKNOWN"  // Should be the last!
-  };
-  static_assert(
-      (sizeof(phase_names) / sizeof(char *)) == (((int) ProtocolPhases::NUM_PROTOCOL_PHASES) + 1),
-      "Wrong phase_names array size. Please, make sure that this array is aligned with the enum ProtocolPhases");
-  int phase_index = (int) phase;
-  if ((phase_index > (int) ProtocolPhases::NUM_PROTOCOL_PHASES) || (phase_index < 0))
-    phase_index = (int) ProtocolPhases::NUM_PROTOCOL_PHASES;
-  return phase_names[phase_index];
+PROGMEM_STRING_TABLE(ProtocolPhaseStrings, "SENDING_INIT_1", "SENDING_INIT_2", "SENDING_FIRST_STATUS_REQUEST",
+                     "SENDING_FIRST_ALARM_STATUS_REQUEST", "IDLE", "SENDING_STATUS_REQUEST",
+                     "SENDING_UPDATE_SIGNAL_REQUEST", "SENDING_SIGNAL_LEVEL", "SENDING_CONTROL",
+                     "SENDING_ACTION_COMMAND", "SENDING_ALARM_STATUS_REQUEST", "UNKNOWN");
+
+const LogString *HaierClimateBase::phase_to_string_(ProtocolPhases phase) {
+  static_assert(ProtocolPhaseStrings::COUNT == ((int) ProtocolPhases::NUM_PROTOCOL_PHASES) + 1,
+                "ProtocolPhaseStrings must match the enum ProtocolPhases, with UNKNOWN last");
+  // UNKNOWN (-1) wraps past the table and reads as the last entry, "UNKNOWN"
+  return ProtocolPhaseStrings::get_log_str(static_cast<uint8_t>(phase), ProtocolPhaseStrings::LAST_INDEX);
 }

 bool check_timeout(std::chrono::steady_clock::time_point now, std::chrono::steady_clock::time_point tpoint,
@@ -71,7 +60,8 @@ HaierClimateBase::~HaierClimateBase() {}

 void HaierClimateBase::set_phase(ProtocolPhases phase) {
  if (this->protocol_phase_ != phase) {
-    ESP_LOGV(TAG, "Phase transition: %s => %s", phase_to_string_(this->protocol_phase_), phase_to_string_(phase));
+    ESP_LOGV(TAG, "Phase transition: %s => %s", LOG_STR_ARG(phase_to_string_(this->protocol_phase_)),
+             LOG_STR_ARG(phase_to_string_(phase)));
    this->protocol_phase_ = phase;
  }
 }
@@ -225,7 +215,7 @@ haier_protocol::HandlerError HaierClimateBase::report_network_status_answer_hand

 haier_protocol::HandlerError HaierClimateBase::timeout_default_handler_(haier_protocol::FrameType request_type) {
  ESP_LOGW(TAG, "Answer timeout for command %02X, phase %s", (uint8_t) request_type,
-           phase_to_string_(this->protocol_phase_));
+           LOG_STR_ARG(phase_to_string_(this->protocol_phase_)));
  if (this->protocol_phase_ > ProtocolPhases::IDLE) {
    this->set_phase(ProtocolPhases::IDLE);
  } else {
@@ -95,7 +95,7 @@ class HaierClimateBase : public esphome::Component,
    SENDING_ALARM_STATUS_REQUEST,
    NUM_PROTOCOL_PHASES
  };
-  const char *phase_to_string_(ProtocolPhases phase);
+  const LogString *phase_to_string_(ProtocolPhases phase);
  virtual void set_handlers() = 0;
  virtual void process_phase(std::chrono::steady_clock::time_point now) = 0;
  virtual haier_protocol::HaierMessage get_control_message() = 0;          // NOLINT(readability-identifier-naming)
@@ -564,7 +564,7 @@ void HonClimate::process_phase(std::chrono::steady_clock::time_point now) {
    default:
      // Shouldn't get here
      ESP_LOGE(TAG, "Wrong protocol handler state: %s (%d), resetting communication",
-               phase_to_string_(this->protocol_phase_), (int) this->protocol_phase_);
+               LOG_STR_ARG(phase_to_string_(this->protocol_phase_)), (int) this->protocol_phase_);
      this->set_phase(ProtocolPhases::SENDING_INIT_1);
      break;
  }
@@ -9,12 +9,9 @@ from ..climate import (
    CONF_HORIZONTAL_AIRFLOW,
    CONF_VERTICAL_AIRFLOW,
    HonClimate,
-    haier_ns,
 )

 CODEOWNERS = ["@paveldn"]
-VerticalAirflowSelect = haier_ns.class_("VerticalAirflowSelect", select.Select)
-HorizontalAirflowSelect = haier_ns.class_("HorizontalAirflowSelect", select.Select)

 # Same order as VERTICAL_SWING_MODES_ORDER and HORIZONTAL_SWING_MODES_ORDER in hon_climate.h
 AIRFLOW_VERTICAL_DIRECTION_OPTIONS = [
@@ -39,12 +36,12 @@ CONFIG_SCHEMA = cv.Schema(
    {
        cv.GenerateID(CONF_HAIER_ID): cv.use_id(HonClimate),
        cv.Optional(CONF_VERTICAL_AIRFLOW): select.select_schema(
-            VerticalAirflowSelect,
+            select.ApplySelect,
            icon="mdi:arrow-expand-vertical",
            entity_category=ENTITY_CATEGORY_CONFIG,
        ),
        cv.Optional(CONF_HORIZONTAL_AIRFLOW): select.select_schema(
-            HorizontalAirflowSelect,
+            select.ApplySelect,
            icon="mdi:arrow-expand-horizontal",
            entity_category=ENTITY_CATEGORY_CONFIG,
        ),
@@ -59,9 +56,13 @@ async def to_code(config: ConfigType) -> None:
        CONF_VERTICAL_AIRFLOW,
        hub.set_vertical_airflow_select,
        options=AIRFLOW_VERTICAL_DIRECTION_OPTIONS,
+        apply="set_vertical_airflow("
+        "haier::airflow_order_at(haier::VERTICAL_SWING_MODES_ORDER, index))",
    )
    await selects(
        CONF_HORIZONTAL_AIRFLOW,
        hub.set_horizontal_airflow_select,
        options=AIRFLOW_HORIZONTAL_DIRECTION_OPTIONS,
+        apply="set_horizontal_airflow("
+        "haier::airflow_order_at(haier::HORIZONTAL_SWING_MODES_ORDER, index))",
    )
@@ -1,15 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../hon_climate.h"
-
-namespace esphome::haier {
-
-class HorizontalAirflowSelect : public select::Select, public Parented<HonClimate> {
- protected:
-  void control(size_t index) override {
-    this->parent_->set_horizontal_airflow(airflow_order_at(HORIZONTAL_SWING_MODES_ORDER, index));
-  }
-};
-
-}  // namespace esphome::haier
@@ -1,15 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../hon_climate.h"
-
-namespace esphome::haier {
-
-class VerticalAirflowSelect : public select::Select, public Parented<HonClimate> {
- protected:
-  void control(size_t index) override {
-    this->parent_->set_vertical_airflow(airflow_order_at(VERTICAL_SWING_MODES_ORDER, index));
-  }
-};
-
-}  // namespace esphome::haier
@@ -93,7 +93,7 @@ haier_protocol::HandlerError Smartair2Climate::messages_timeout_handler_with_cyc
  if (this->protocol_phase_ >= ProtocolPhases::IDLE)
    return HaierClimateBase::timeout_default_handler_(message_type);
  ESP_LOGI(TAG, "Answer timeout for command %02X, phase %s", (uint8_t) message_type,
-           phase_to_string_(this->protocol_phase_));
+           LOG_STR_ARG(phase_to_string_(this->protocol_phase_)));
  ProtocolPhases new_phase = (ProtocolPhases) ((int) this->protocol_phase_ + 1);
  if (new_phase >= ProtocolPhases::SENDING_FIRST_ALARM_STATUS_REQUEST)
    new_phase = ProtocolPhases::SENDING_INIT_1;
@@ -217,7 +217,7 @@ void Smartair2Climate::process_phase(std::chrono::steady_clock::time_point now)
    default:
      // Shouldn't get here
      ESP_LOGE(TAG, "Wrong protocol handler state: %s (%d), resetting communication",
-               phase_to_string_(this->protocol_phase_), (int) this->protocol_phase_);
+               LOG_STR_ARG(phase_to_string_(this->protocol_phase_)), (int) this->protocol_phase_);
      this->set_phase(ProtocolPhases::SENDING_INIT_1);
      break;
  }
@@ -1,6 +1,7 @@
 #include "htu21d.h"
-#include "esphome/core/log.h"
 #include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"

 namespace esphome::htu21d {

@@ -112,11 +113,7 @@ void HTU21DComponent::set_heater(bool status) {
    this->status_set_warning();
    return;
  }
-  if (status) {
-    raw_heater |= (1 << HTU21D_REG_HTRE_BIT);
-  } else {
-    raw_heater &= ~(1 << HTU21D_REG_HTRE_BIT);
-  }
+  assign_bits(raw_heater, 1 << HTU21D_REG_HTRE_BIT, status);
  if (this->write_register(HTU21D_WRITERHT_REG_CMD, &raw_heater, 1) != i2c::ERROR_OK) {
    this->status_set_warning();
    return;
@@ -40,10 +40,7 @@ RG_MODELS = {
    # 1.200 - https://rainsensors.com/wp-content/uploads/sites/3/2022/03/2022.02.17-rev-1.200-rg-9_instructions.pdf
 }

-RG15_RESOLUTION = {
-    "low": RG15Resolution.FORCE_LOW,
-    "high": RG15Resolution.FORCE_HIGH,
-}
+RG15_RESOLUTION = RG15Resolution.options("low", "high", prefix="FORCE_")

 SUPPORTED_OPTIONS = {
    CONF_ACC: ["RG_15"],
@@ -270,21 +270,23 @@ void I2SAudioMicrophone::mic_task(void *params) {

  {  // Ensures the samples vector is freed when the task stops

-    const size_t bytes_to_read = this_microphone->audio_stream_info_.ms_to_bytes(READ_DURATION_MS);
+    // Copied so the format cannot change while the task runs
+    const audio::AudioStreamInfo stream_info = this_microphone->audio_stream_info_;
+    const size_t bytes_to_read = stream_info.ms_to_bytes(READ_DURATION_MS);
    std::vector<uint8_t> samples;
    samples.reserve(bytes_to_read);

    xEventGroupSetBits(this_microphone->event_group_, MicrophoneEventGroupBits::TASK_RUNNING);

    while (!(xEventGroupGetBits(this_microphone->event_group_) & MicrophoneEventGroupBits::COMMAND_STOP)) {
-      if (this_microphone->data_callbacks_.size() > 0) {
+      if (this_microphone->has_data_callbacks_()) {
        samples.resize(bytes_to_read);
        size_t bytes_read = this_microphone->read_(samples.data(), bytes_to_read, 2 * READ_DURATION_MS);
        samples.resize(bytes_read);
        if (this_microphone->correct_dc_offset_) {
          this_microphone->fix_dc_offset_(samples);
        }
-        this_microphone->data_callbacks_.call(samples);
+        this_microphone->publish_audio_(samples, stream_info);
      } else {
        vTaskDelay(pdMS_TO_TICKS(READ_DURATION_MS));
      }
@@ -19,12 +19,7 @@ void ICNT86Touchscreen::setup() {
  }

  // Perform reset if necessary
-  if (this->reset_pin_ != nullptr) {
-    this->reset_pin_->setup();
-    this->reset_pin_->digital_write(false);
-    delay(10);
-    this->reset_pin_->digital_write(true);
-  }
+  pulse_reset(this->reset_pin_, {.low_ms = 10});

  if (this->x_raw_max_ == this->x_raw_min_) {
    this->x_raw_max_ = this->display_->get_native_width();
@@ -1,8 +1,7 @@
 """Shared base for the infrared and radio_frequency entity components."""

 import esphome.codegen as cg
-from esphome.components import remote_base
-from esphome.components.api import DOMAIN as API_DOMAIN
+from esphome.const import CONF_API
 from esphome.core import CORE
 from esphome.core.entity_helpers import queue_entity_register
 from esphome.types import ConfigType
@@ -24,8 +23,10 @@ async def attach_transmitter(var: cg.MockObj, config: ConfigType, key: str) -> N
    does. Without this call anywhere in the build a request is answered as
    soon as the frame is handed over.
    """
+    from esphome.components import remote_base
+
    await remote_base.register_transmittable(var, config, key)
-    if API_DOMAIN in CORE.config:
+    if CONF_API in CORE.config:
        cg.add_define("USE_IR_RF_TRANSMIT_COMPLETE")


@@ -2,11 +2,20 @@

 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
+#include "esphome/core/progmem.h"

 namespace esphome::kamstrup_kmp {

 ESPHOME_LOG_TAG(TAG, "kamstrup_kmp");

+// KMP units indexed by unit code; the empty first entry doubles as the fallback for unknown codes
+PROGMEM_STRING_TABLE(KmpUnits, "", "Wh", "kWh", "MWh", "GWh", "J", "kJ", "MJ", "GJ", "Cal", "kCal", "Mcal", "Gcal",
+                     "varh", "kvarh", "Mvarh", "Gvarh", "VAh", "kVAh", "MVAh", "GVAh", "kW", "kW", "MW", "GW", "kvar",
+                     "kvar", "Mvar", "Gvar", "VA", "kVA", "MVA", "GVA", "V", "A", "kV", "kA", "C", "K", "l", "m3",
+                     "l/h", "m3/h", "m3xC", "ton", "ton/h", "h", "hh:mm:ss", "yy:mm:dd", "yyyy:mm:dd", "mm:dd", "",
+                     "bar", "RTC", "ASCII", "m3 x 10", "ton x 10", "GJ x 10", "minutes", "Bitfield", "s", "ms", "days",
+                     "RTC-Q", "Datetime");
+
 void KamstrupKMPComponent::dump_config() {
  ESP_LOGCONFIG(TAG, "kamstrup_kmp:");
  LOG_UPDATE_INTERVAL(this);
@@ -237,8 +246,6 @@ void KamstrupKMPComponent::parse_command_message_(uint16_t command, const uint8_
 }

 void KamstrupKMPComponent::set_sensor_value_(uint16_t command, float value, uint8_t unit_idx) {
-  const char *unit = unit_idx < sizeof(UNITS) / sizeof(UNITS[0]) ? UNITS[unit_idx] : "";
-
  // Standard sensors
  if (command == CMD_HEAT_ENERGY && this->heat_energy_sensor_ != nullptr) {
    this->heat_energy_sensor_->publish_state(value);
@@ -263,7 +270,8 @@ void KamstrupKMPComponent::set_sensor_value_(uint16_t command, float value, uint
    }
  }

-  ESP_LOGD(TAG, "Received value for command 0x%04X: %.3f [%s]", command, value, unit);
+  ESP_LOGD(TAG, "Received value for command 0x%04X: %.3f [%s]", command, value,
+           LOG_STR_ARG(KmpUnits::get_log_str(unit_idx, 0)));
 }

 }  // namespace esphome::kamstrup_kmp
@@ -63,16 +63,6 @@ static const uint16_t CMD_TEMP_DIFF = 0x0059;
 static const uint16_t CMD_FLOW = 0x004A;
 static const uint16_t CMD_VOLUME = 0x0044;

-// KMP units
-static const char *const UNITS[] = {
-    "",      "Wh",   "kWh",  "MWh",   "GWh",     "J",       "kJ",       "MJ",       "GJ",       "Cal",
-    "kCal",  "Mcal", "Gcal", "varh",  "kvarh",   "Mvarh",   "Gvarh",    "VAh",      "kVAh",     "MVAh",
-    "GVAh",  "kW",   "kW",   "MW",    "GW",      "kvar",    "kvar",     "Mvar",     "Gvar",     "VA",
-    "kVA",   "MVA",  "GVA",  "V",     "A",       "kV",      "kA",       "C",        "K",        "l",
-    "m3",    "l/h",  "m3/h", "m3xC",  "ton",     "ton/h",   "h",        "hh:mm:ss", "yy:mm:dd", "yyyy:mm:dd",
-    "mm:dd", "",     "bar",  "RTC",   "ASCII",   "m3 x 10", "ton x 10", "GJ x 10",  "minutes",  "Bitfield",
-    "s",     "ms",   "days", "RTC-Q", "Datetime"};
-
 class KamstrupKMPComponent final : public PollingComponent, public uart::UARTDevice {
 public:
  void set_heat_energy_sensor(sensor::Sensor *sensor) { this->heat_energy_sensor_ = sensor; }
@@ -13,11 +13,7 @@ from esphome.const import (
 )
 from esphome.types import ConfigType

-from .. import CONF_LD2410_ID, LD2410Component, ld2410_ns
-
-BaudRateSelect = ld2410_ns.class_("BaudRateSelect", select.Select)
-DistanceResolutionSelect = ld2410_ns.class_("DistanceResolutionSelect", select.Select)
-LightOutControlSelect = ld2410_ns.class_("LightOutControlSelect", select.Select)
+from .. import CONF_LD2410_ID, LD2410Component

 CONF_DISTANCE_RESOLUTION = "distance_resolution"
 CONF_LIGHT_FUNCTION = "light_function"
@@ -27,22 +23,22 @@ CONFIG_SCHEMA = {
    cv.GenerateID(CONF_ID): cv.declare_id(cg.EntityBase),
    cv.GenerateID(CONF_LD2410_ID): cv.use_id(LD2410Component),
    cv.Optional(CONF_DISTANCE_RESOLUTION): select.select_schema(
-        DistanceResolutionSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_RULER,
    ),
    cv.Optional(CONF_LIGHT_FUNCTION): select.select_schema(
-        LightOutControlSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_LIGHTBULB,
    ),
    cv.Optional(CONF_OUT_PIN_LEVEL): select.select_schema(
-        LightOutControlSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_SCALE,
    ),
    cv.Optional(CONF_BAUD_RATE): select.select_schema(
-        BaudRateSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_THERMOMETER,
    ),
@@ -57,18 +53,30 @@ async def to_code(config: ConfigType) -> None:
        CONF_DISTANCE_RESOLUTION,
        hub.set_distance_resolution_select,
        options=["0.2m", "0.75m"],
+        apply=(
+            "set_distance_resolution(static_cast<ld2410::DistanceResolution>("
+            "progmem_read_byte(&ld2410::DISTANCE_RESOLUTIONS[index])))"
+        ),
+        publish="before",
    )
+    light = {"apply": "set_light_out_control()", "publish": "before"}
    await selects(
-        CONF_OUT_PIN_LEVEL, hub.set_out_pin_level_select, options=["low", "high"]
+        CONF_OUT_PIN_LEVEL,
+        hub.set_out_pin_level_select,
+        options=["low", "high"],
+        **light,
    )
    await selects(
        CONF_LIGHT_FUNCTION,
        hub.set_light_function_select,
        options=["off", "below", "above"],
+        **light,
    )
    await selects(
        CONF_BAUD_RATE,
        hub.set_baud_rate_select,
+        apply="set_baud_rate(static_cast<ld2410::BaudRate>(index + 1))",
+        publish="before",
        options=[
            "9600",
            "19200",
@@ -1,10 +0,0 @@
-#include "baud_rate_select.h"
-
-namespace esphome::ld2410 {
-
-void BaudRateSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_baud_rate(static_cast<BaudRate>(index + 1));
-}
-
-}  // namespace esphome::ld2410
@@ -1,16 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2410.h"
-
-namespace esphome::ld2410 {
-
-class BaudRateSelect final : public select::Select, public Parented<LD2410Component> {
- public:
-  BaudRateSelect() = default;
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2410
@@ -1,11 +0,0 @@
-#include "distance_resolution_select.h"
-
-namespace esphome::ld2410 {
-
-void DistanceResolutionSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_distance_resolution(
-      static_cast<DistanceResolution>(progmem_read_byte(&DISTANCE_RESOLUTIONS[index])));
-}
-
-}  // namespace esphome::ld2410
@@ -1,16 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2410.h"
-
-namespace esphome::ld2410 {
-
-class DistanceResolutionSelect final : public select::Select, public Parented<LD2410Component> {
- public:
-  DistanceResolutionSelect() = default;
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2410
@@ -1,10 +0,0 @@
-#include "light_out_control_select.h"
-
-namespace esphome::ld2410 {
-
-void LightOutControlSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_light_out_control();
-}
-
-}  // namespace esphome::ld2410
@@ -1,16 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2410.h"
-
-namespace esphome::ld2410 {
-
-class LightOutControlSelect final : public select::Select, public Parented<LD2410Component> {
- public:
-  LightOutControlSelect() = default;
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2410
@@ -13,11 +13,7 @@ from esphome.const import (
 )
 from esphome.types import ConfigType

-from .. import CONF_LD2412_ID, LD2412_ns, LD2412Component
-
-BaudRateSelect = LD2412_ns.class_("BaudRateSelect", select.Select)
-DistanceResolutionSelect = LD2412_ns.class_("DistanceResolutionSelect", select.Select)
-LightOutControlSelect = LD2412_ns.class_("LightOutControlSelect", select.Select)
+from .. import CONF_LD2412_ID, LD2412Component

 CONF_DISTANCE_RESOLUTION = "distance_resolution"
 CONF_LIGHT_FUNCTION = "light_function"
@@ -27,17 +23,17 @@ CONFIG_SCHEMA = {
    cv.GenerateID(CONF_ID): cv.declare_id(cg.EntityBase),
    cv.GenerateID(CONF_LD2412_ID): cv.use_id(LD2412Component),
    cv.Optional(CONF_BAUD_RATE): select.select_schema(
-        BaudRateSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_THERMOMETER,
    ),
    cv.Optional(CONF_DISTANCE_RESOLUTION): select.select_schema(
-        DistanceResolutionSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_RULER,
    ),
    cv.Optional(CONF_LIGHT_FUNCTION): select.select_schema(
-        LightOutControlSelect,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
        icon=ICON_LIGHTBULB,
    ),
@@ -66,16 +62,25 @@ async def to_code(config: ConfigType) -> None:
            "256000",
            "460800",
        ],
+        apply="set_baud_rate(static_cast<ld2412::BaudRate>(index + 1))",
+        publish="before",
    )
    await selects(
        CONF_DISTANCE_RESOLUTION,
        hub.set_distance_resolution_select,
        options=["0.2m", "0.5m", "0.75m"],
+        apply=(
+            "set_distance_resolution(static_cast<ld2412::DistanceResolution>("
+            "progmem_read_byte(&ld2412::DISTANCE_RESOLUTIONS[index])))"
+        ),
+        publish="before",
    )
    await selects(
        CONF_LIGHT_FUNCTION,
        hub.set_light_function_select,
        options=["off", "below", "above"],
+        apply="set_light_out_control()",
+        publish="before",
    )
    # The pin level travels in the basic configuration command, not the light control one
    await selects(
@@ -1,10 +0,0 @@
-#include "baud_rate_select.h"
-
-namespace esphome::ld2412 {
-
-void BaudRateSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_baud_rate(static_cast<BaudRate>(index + 1));
-}
-
-}  // namespace esphome::ld2412
@@ -1,17 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2412.h"
-
-namespace esphome::ld2412 {
-
-class BaudRateSelect final : public select::Select, public Parented<LD2412Component> {
- public:
-  // User provided, not "= default": `new(p) BaudRateSelect()` would zero-fill .bss that is already zero.
-  BaudRateSelect() {}
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2412
@@ -1,11 +0,0 @@
-#include "distance_resolution_select.h"
-
-namespace esphome::ld2412 {
-
-void DistanceResolutionSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_distance_resolution(
-      static_cast<DistanceResolution>(progmem_read_byte(&DISTANCE_RESOLUTIONS[index])));
-}
-
-}  // namespace esphome::ld2412
@@ -1,17 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2412.h"
-
-namespace esphome::ld2412 {
-
-class DistanceResolutionSelect final : public select::Select, public Parented<LD2412Component> {
- public:
-  // User provided, not "= default": `new(p) DistanceResolutionSelect()` would zero-fill .bss that is already zero.
-  DistanceResolutionSelect() {}
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2412
@@ -1,10 +0,0 @@
-#include "light_out_control_select.h"
-
-namespace esphome::ld2412 {
-
-void LightOutControlSelect::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_light_out_control();
-}
-
-}  // namespace esphome::ld2412
@@ -1,17 +0,0 @@
-#pragma once
-
-#include "esphome/components/select/select.h"
-#include "../ld2412.h"
-
-namespace esphome::ld2412 {
-
-class LightOutControlSelect final : public select::Select, public Parented<LD2412Component> {
- public:
-  // User provided, not "= default": `new(p) LightOutControlSelect()` would zero-fill .bss that is already zero.
-  LightOutControlSelect() {}
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2412
@@ -4,7 +4,7 @@ import esphome.config_validation as cv
 from esphome.const import ENTITY_CATEGORY_CONFIG
 from esphome.types import ConfigType

-from .. import CONF_LD2420_ID, LD2420Component, ld2420_ns
+from .. import CONF_LD2420_ID, LD2420Component

 CONF_OPERATING_MODE = "operating_mode"
 CONF_SELECTS = [
@@ -13,12 +13,11 @@ CONF_SELECTS = [
    "Simple",
 ]

-LD2420Select = ld2420_ns.class_("LD2420Select", select.Select, cg.Component)

 CONFIG_SCHEMA = {
    cv.GenerateID(CONF_LD2420_ID): cv.use_id(LD2420Component),
    cv.Required(CONF_OPERATING_MODE): select.select_schema(
-        LD2420Select,
+        select.ApplySelect,
        entity_category=ENTITY_CATEGORY_CONFIG,
    ),
 }
@@ -28,5 +27,9 @@ async def to_code(config: ConfigType) -> None:
    hub = await cg.get_variable(config[CONF_LD2420_ID])
    selects = select.sub_selects(config, parent=hub)
    await selects(
-        CONF_OPERATING_MODE, hub.set_operating_mode_select, options=CONF_SELECTS
+        CONF_OPERATING_MODE,
+        hub.set_operating_mode_select,
+        options=CONF_SELECTS,
+        apply="set_operating_mode(static_cast<ld2420::OpMode>(index + 1))",
+        publish="before",
    )
@@ -1,14 +0,0 @@
-#include "operating_mode_select.h"
-#include "esphome/core/helpers.h"
-#include "esphome/core/log.h"
-
-namespace esphome::ld2420 {
-
-ESPHOME_LOG_TAG(TAG, "ld2420.select");
-
-void LD2420Select::control(size_t index) {
-  this->publish_state(index);
-  this->parent_->set_operating_mode(static_cast<OpMode>(index + 1));
-}
-
-}  // namespace esphome::ld2420
@@ -1,16 +0,0 @@
-#pragma once
-
-#include "../ld2420.h"
-#include "esphome/components/select/select.h"
-
-namespace esphome::ld2420 {
-
-class LD2420Select final : public Component, public select::Select, public Parented<LD2420Component> {
- public:
-  LD2420Select() = default;
-
- protected:
-  void control(size_t index) override;
-};
-
-}  // namespace esphome::ld2420
Author	SHA1	Message	Date
J. Nick Koston	29bc2c1275	[sendspin] Assert the publish follows the hub call directly	2026-10-26 08:03:12 -10:00
J. Nick Koston	e7dd4f06ea	[sendspin] Pass True to the enabled switch define and trim a test docstring	2026-10-26 07:31:15 -10:00
J. Nick Koston	eabc7df6fc	[sendspin] Use an Apply switch for the enabled switch	2026-10-26 07:27:17 -10:00
J. Nick Koston	650db15e2b	[sendspin] Test that the enabled switch, not codegen, answers the hub	2026-10-26 07:13:44 -10:00
Jonathan Swoboda	87341dc136	[logger] Enable Log V2 only on the native ESP-IDF toolchain (#21652 )	2026-10-26 13:03:15 -04:00
J. Nick Koston	cfe5809654	[wifi] Hand the DPP bootstrapping key to the supplicant DER encoded (#20882 )	2026-10-26 16:37:25 +00:00
J. Nick Koston	9c54f96520	[libretiny] Send only the UF2 images the device writes over OTA (#21642 )	2026-10-26 06:28:54 -10:00
J. Nick Kostonandpre-commit-ci-lite[bot]	0cc5b372fb	[core] Defer integration imports in ir_rf_base and media_player (#21601 ) Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>	2026-10-26 06:26:00 -10:00
J. Nick Koston	f7c8cba8b7	[components] Use pulse_reset for blocking reset pin pulses (#21472 )	2026-10-26 06:22:11 -10:00
J. Nick Koston	79a22e9a9a	[core] Add pulse_reset for active-low reset pins (#21470 )	2026-10-26 06:22:10 -10:00
J. Nick Koston	103023737d	[openthread] Resolve IPv6 literal addresses when the DNS64 client is enabled (#19269 )	2026-10-26 16:18:12 +00:00
J. Nick Koston	6b6b70a8b6	[dfrobot_sen0395] Collect lines with LineReader (#20979 )	2026-10-26 12:16:51 -04:00
J. Nick Koston	d312bf1b73	[core] Let the yaml editor insert lines, write with a rollback and restore (#20602 )	2026-10-26 06:16:26 -10:00
J. Nick Koston	0d2f8c0e88	[components] Set or clear entity, socket and sensor bits with assign_bits (#21188 )	2026-10-26 12:10:29 -04:00
J. Nick Koston	2f8b50c5af	[components] Build the remaining enum option dicts with options() (#20972 )	2026-10-26 12:10:08 -04:00
Kevin Ahrendt	c4b598be3e	[microphone] Pass each audio buffer as an AudioCapture (#21645 )	2026-10-26 06:09:53 -10:00
J. Nick Koston	0cd16df16f	[components] Write constant codec register tables with write_registers (#20946 )	2026-10-26 12:09:47 -04:00
J. Nick Koston	a680974da2	[ld6002b] Use Apply entities and find the setting by entity pointer (#20937 )	2026-10-26 12:09:03 -04:00
J. Nick Koston	78f0b1ceba	[esp32_rmt_led_strip] Stop blocking the main loop while waiting for the previous frame (#19337 )	2026-10-26 06:08:13 -10:00
J. Nick Koston	c5a841e11e	[seeed_mr60fda2] Keep the parameter value tables in flash (#20720 )	2026-10-26 12:07:24 -04:00
J. Nick Koston	365965f9bb	[veml7700] Keep the gain and integration time tables in flash (#20719 )	2026-10-26 12:07:06 -04:00
J. Nick Koston	16011d7fce	[nextion] Keep the queue type name table in flash (#20658 )	2026-10-26 12:06:31 -04:00
J. Nick Koston	4486dc53d8	[tx20] Keep the wind direction table in flash (#20657 )	2026-10-26 12:05:43 -04:00
J. Nick Koston Jonathan Swoboda pre-commit-ci-lite[bot]	8d5e3ce534	[components] Use Apply selects for hub forwarding selects (#20966 ) Co-authored-by: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com> Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>	2026-10-26 16:05:20 +00:00
J. Nick Koston	9ea4d35a50	[uart] Keep debug delimiters and event patterns in flash (#20109 )	2026-10-26 12:05:06 -04:00
J. Nick Koston	5cceddfbf4	[kamstrup_kmp] Keep the unit name table in flash (#20642 )	2026-10-26 11:58:43 -04:00
J. Nick Koston	ff6a37a052	[micronova] Keep the stove state table in flash (#20645 )	2026-10-26 11:58:15 -04:00
J. Nick Koston	6990092be0	[ezo] Keep the command and calibration type tables in flash (#20655 )	2026-10-26 11:57:41 -04:00
J. Nick Koston	9220c79a51	[bme680_bsec] Keep the IAQ accuracy names in flash (#20656 )	2026-10-26 11:57:23 -04:00
J. Nick Koston	215fcd4f5d	[pulse_counter] Keep the edge mode name table in flash (#20660 )	2026-10-26 11:57:03 -04:00
J. Nick Koston	918e3b3a58	[haier] Keep the protocol phase names in flash (#20710 )	2026-10-26 11:56:43 -04:00
J. Nick Koston	347eb3902e	[seeed_mr24hpc1] Keep the text sensor state tables in flash (#20711 )	2026-10-26 11:55:18 -04:00
J. Nick Koston	177820083f	[epaper_spi] Keep the state name table in flash (#20713 )	2026-10-26 11:54:07 -04:00
J. Nick Koston	b0a0524091	[cc1101] Keep the modulation name table in flash (#20716 )	2026-10-26 11:53:10 -04:00