[template] Use a user provided default constructor for TemplateTime

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

AGENTS.md

@@ -629,6 +629,9 @@ file does, and it is the authority when they disagree. The most useful starting
                _request_listener_slot()
                cg.add(hub.register_listener(var))
            ```
+           When several instances each own a list declared at the same size (one per hub of a
+           `MULTI_CONF` component), pass the owning object as the key, `_request_listener_slot(str(hub))`;
+           the define is then the largest count any one key requested instead of the total.
            ```cpp
            #ifdef MY_COMPONENT_LISTENER_COUNT
              void register_listener(MyComponentListener *listener);

docker/Dockerfile

@@ -22,7 +22,7 @@ RUN \
     -r /requirements.txt
 
 # Install the ESPHome Device Builder dashboard.
-RUN uv pip install --no-cache-dir esphome-device-builder==1.14.6
+RUN uv pip install --no-cache-dir esphome-device-builder==1.14.7
 
 RUN \
     platformio settings set enable_telemetry No \

esphome/components/const/__init__.py

@@ -30,6 +30,7 @@ CONF_KEYS = "keys"
 CONF_LABEL = "label"
 CONF_LIBRETINY = "libretiny"
 CONF_LOOP = "loop"
+CONF_MANUFACTURER = "manufacturer"
 CONF_NOX_INDEX = "nox_index"
 CONF_ON_PACKET = "on_packet"
 CONF_ON_RECEIVE = "on_receive"

esphome/components/coolix/climate.py

@@ -1,5 +1,5 @@
 import esphome.codegen as cg
-from esphome.components import climate_ir
+from esphome.components import climate_ir, remote_base
 from esphome.types import ConfigType
 
 AUTO_LOAD = ["climate_ir"]
@@ -12,4 +12,5 @@ CONFIG_SCHEMA = climate_ir.climate_ir_with_receiver_schema(CoolixClimate)
 
 
 async def to_code(config: ConfigType) -> None:
+    remote_base.request_protocol("coolix")  # used from C++
     await climate_ir.new_climate_ir(config)

esphome/components/datetime/date_entity.h

@@ -32,9 +32,9 @@ struct DateEntityRestoreState {
 
 class DateEntity : public DateTimeBase {
  protected:
-  uint16_t year_;
-  uint8_t month_;
-  uint8_t day_;
+  uint16_t year_{0};
+  uint8_t month_{0};
+  uint8_t day_{0};
 
  public:
   void publish_state();

esphome/components/datetime/datetime_base.h

@@ -27,7 +27,7 @@ class DateTimeBase : public EntityBase {
   LazyCallbackManager<void()> state_callback_;
 
 #ifdef USE_TIME
-  time::RealTimeClock *rtc_;
+  time::RealTimeClock *rtc_{nullptr};
 #endif
 };
 

esphome/components/datetime/datetime_entity.h

@@ -35,12 +35,12 @@ struct DateTimeEntityRestoreState {
 
 class DateTimeEntity : public DateTimeBase {
  protected:
-  uint16_t year_;
-  uint8_t month_;
-  uint8_t day_;
-  uint8_t hour_;
-  uint8_t minute_;
-  uint8_t second_;
+  uint16_t year_{0};
+  uint8_t month_{0};
+  uint8_t day_{0};
+  uint8_t hour_{0};
+  uint8_t minute_{0};
+  uint8_t second_{0};
 
  public:
   void publish_state();

esphome/components/datetime/time_entity.h

@@ -33,9 +33,9 @@ struct TimeEntityRestoreState {
 
 class TimeEntity : public DateTimeBase {
  protected:
-  uint8_t hour_;
-  uint8_t minute_;
-  uint8_t second_;
+  uint8_t hour_{0};
+  uint8_t minute_{0};
+  uint8_t second_{0};
 
  public:
   void publish_state();

esphome/components/esp32/__init__.py

@@ -189,6 +189,13 @@ PSRAM_XIP_VARIANTS = {
     VARIANT_ESP32S31,
 }
 
+# Variants whose ROM exports a full-format vsnprintf but no vasprintf
+# (esp32c6.rom.newlib-normal.ld). There, the newlib printf engine is only
+# linked because esp_http_client calls vasprintf; see vasprintf_stubs.cpp.
+# The other variants either export both (classic ESP32, nano-format only) or
+# neither, so the engine is already in the image and the wrap saves nothing.
+ROM_VSNPRINTF_WITHOUT_VASPRINTF_VARIANTS = {VARIANT_ESP32C6}
+
 # NVS encryption (HMAC peripheral scheme) is only available on variants that
 # expose the HMAC peripheral (SOC_HMAC_SUPPORTED in soc_caps.h). The original
 # ESP32 and ESP32-C2 do not have it. New variants with an HMAC peripheral
@@ -1732,6 +1739,8 @@ CONF_DISABLE_USB_SERIAL_JTAG_SECONDARY = "disable_usb_serial_jtag_secondary"
 CONF_DISABLE_DEV_NULL_VFS = "disable_dev_null_vfs"
 CONF_DISABLE_MBEDTLS_PEER_CERT = "disable_mbedtls_peer_cert"
 CONF_DISABLE_MBEDTLS_PKCS7 = "disable_mbedtls_pkcs7"
+CONF_DISABLE_MBEDTLS_TLS_SERVER = "disable_mbedtls_tls_server"
+CONF_DISABLE_MBEDTLS_TLS_EXTRAS = "disable_mbedtls_tls_extras"
 CONF_DISABLE_REGI2C_IN_IRAM = "disable_regi2c_in_iram"
 CONF_DISABLE_FATFS = "disable_fatfs"
 CONF_ADC_ONESHOT_IN_IRAM = "adc_oneshot_in_iram"
@@ -1746,6 +1755,8 @@ KEY_VFS_TERMIOS_REQUIRED = "vfs_termios_required"
 KEY_USB_SERIAL_JTAG_SECONDARY_REQUIRED = "usb_serial_jtag_secondary_required"
 KEY_MBEDTLS_PEER_CERT_REQUIRED = "mbedtls_peer_cert_required"
 KEY_MBEDTLS_PKCS7_REQUIRED = "mbedtls_pkcs7_required"
+KEY_MBEDTLS_TLS_SERVER_REQUIRED = "mbedtls_tls_server_required"
+KEY_MBEDTLS_TLS_EXTRAS_REQUIRED = "mbedtls_tls_extras_required"
 KEY_FATFS_REQUIRED = "fatfs_required"
 KEY_MBEDTLS_SHA512_REQUIRED = "mbedtls_sha512_required"
 KEY_ADC_ONESHOT_IRAM_REQUIRED = "adc_oneshot_iram_required"
@@ -1830,6 +1841,30 @@ def require_mbedtls_pkcs7() -> None:
     CORE.data[KEY_ESP32][KEY_MBEDTLS_PKCS7_REQUIRED] = True
 
 
+def require_mbedtls_tls_server() -> None:
+    """Mark that the mbedTLS server-side TLS/DTLS handshake is required.
+
+    Call this from components that accept TLS connections (OpenThread's DTLS
+    commissioner does). This prevents CONFIG_MBEDTLS_TLS_CLIENT_ONLY from
+    being selected.
+    """
+    CORE.data[KEY_ESP32][KEY_MBEDTLS_TLS_SERVER_REQUIRED] = True
+
+
+def require_mbedtls_tls_extras(options: Iterable[str] | None = None) -> None:
+    """Mark TLS features disabled by ``disable_mbedtls_tls_extras`` as required.
+
+    ``options`` names the entries of ``MBEDTLS_TLS_EXTRA_OPTIONS`` to keep;
+    omit it to keep all of them. Call this from components that need AES-CCM,
+    deterministic ECDSA signing, static RSA/ECDH key exchange, TLS
+    renegotiation or session tickets, or that run a TLS client against
+    servers ESPHome cannot vet (wpa_supplicant's EAP client). A user-supplied
+    sdkconfig_options value is never overridden either.
+    """
+    required = CORE.data[KEY_ESP32].setdefault(KEY_MBEDTLS_TLS_EXTRAS_REQUIRED, set())
+    required.update(MBEDTLS_TLS_EXTRA_OPTIONS if options is None else options)
+
+
 def require_mbedtls_sha512() -> None:
     """Mark that mbedTLS SHA-384/SHA-512 support is required by a component.
 
@@ -1987,6 +2022,8 @@ FRAMEWORK_SCHEMA = cv.Schema(
                 cv.Optional(CONF_DISABLE_DEV_NULL_VFS, default=True): cv.boolean,
                 cv.Optional(CONF_DISABLE_MBEDTLS_PEER_CERT, default=True): cv.boolean,
                 cv.Optional(CONF_DISABLE_MBEDTLS_PKCS7, default=True): cv.boolean,
+                cv.Optional(CONF_DISABLE_MBEDTLS_TLS_SERVER, default=True): cv.boolean,
+                cv.Optional(CONF_DISABLE_MBEDTLS_TLS_EXTRAS, default=True): cv.boolean,
                 cv.Optional(CONF_DISABLE_REGI2C_IN_IRAM, default=True): cv.boolean,
                 cv.Optional(CONF_ADC_ONESHOT_IN_IRAM, default=False): cv.boolean,
                 cv.Optional(CONF_DISABLE_FATFS, default=True): cv.boolean,
@@ -2302,6 +2339,69 @@ async def _reconcile_certificate_bundle_sdkconfig() -> None:
         set_idf_sdkconfig_default("CONFIG_MBEDTLS_CERTIFICATE_BUNDLE_DEFAULT_CMN", True)
 
 
+# TLS features an HTTPS/MQTT client talking to a modern server never
+# negotiates. Static RSA and static ECDH key exchange have no forward secrecy
+# and are gone in TLS 1.3, renegotiation is deprecated, esp-tls never enables
+# session tickets, AES-CCM ciphersuites are not offered by web servers, and
+# deterministic ECDSA only matters when signing with a private key. Together
+# they cost ~10 KB of flash whenever TLS is linked (http_request, mqtt).
+# wpa_supplicant's EAP client is a second TLS client that talks to RADIUS
+# servers ESPHome cannot vet, and a failed EAP handshake leaves the device
+# off the network, so the wifi component re-enables all of these when eap is
+# configured.
+# The EC public key parsing extras stay enabled: they decide whether a peer
+# certificate with a compressed point or explicit curve parameters parses,
+# which no component can know ahead of time.
+MBEDTLS_TLS_EXTRA_OPTIONS = (
+    "CONFIG_MBEDTLS_KEY_EXCHANGE_RSA",
+    "CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA",
+    "CONFIG_MBEDTLS_KEY_EXCHANGE_ECDH_RSA",
+    "CONFIG_MBEDTLS_SSL_RENEGOTIATION",
+    "CONFIG_MBEDTLS_CLIENT_SSL_SESSION_TICKETS",
+    "CONFIG_MBEDTLS_SERVER_SSL_SESSION_TICKETS",
+    "CONFIG_MBEDTLS_CCM_C",
+    "CONFIG_MBEDTLS_ECDSA_DETERMINISTIC",
+)
+
+# Members of the mbedTLS "TLS Protocol Role" Kconfig choice. Setting one
+# member is only valid when the user has not already chosen another.
+MBEDTLS_TLS_ROLE_OPTIONS = (
+    "CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT",
+    "CONFIG_MBEDTLS_TLS_SERVER_ONLY",
+    "CONFIG_MBEDTLS_TLS_CLIENT_ONLY",
+    "CONFIG_MBEDTLS_TLS_DISABLED",
+)
+
+
+@coroutine_with_priority(CoroPriority.FINAL)
+async def _reconcile_mbedtls_tls_sdkconfig(
+    disable_tls_server: bool, disable_tls_extras: bool
+) -> None:
+    """Trim mbedTLS to what a TLS client needs unless a component asked otherwise.
+
+    Runs at FINAL priority so every require_mbedtls_tls_server() and
+    require_mbedtls_tls_extras() call has happened. Only the server-side
+    handshake (~7 KB) is a separate option; nothing in ESPHome accepts TLS
+    connections, but OpenThread's DTLS commissioner does. A user-supplied
+    sdkconfig_options value always wins; for the TLS role choice, any member
+    the user set leaves the whole choice alone so the pair cannot conflict.
+    """
+    data = CORE.data[KEY_ESP32]
+    sdkconfig = data[KEY_SDKCONFIG_OPTIONS]
+    if (
+        disable_tls_server
+        and not data.get(KEY_MBEDTLS_TLS_SERVER_REQUIRED, False)
+        and not any(option in sdkconfig for option in MBEDTLS_TLS_ROLE_OPTIONS)
+    ):
+        add_idf_sdkconfig_option("CONFIG_MBEDTLS_TLS_CLIENT_ONLY", True)
+        add_idf_sdkconfig_option("CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT", False)
+    if disable_tls_extras:
+        required = data.get(KEY_MBEDTLS_TLS_EXTRAS_REQUIRED, set())
+        for option in MBEDTLS_TLS_EXTRA_OPTIONS:
+            if option not in required:
+                set_idf_sdkconfig_default(option, False)
+
+
 @coroutine_with_priority(CoroPriority.FINAL)
 async def _reconcile_network_sdkconfig() -> None:
     """Reconcile WiFi/Ethernet/Bluetooth/coexistence sdkconfig flags.
@@ -2566,6 +2666,17 @@ async def to_code(config):
         else:
             for symbol in ("vprintf", "printf", "fprintf", "vfprintf"):
                 cg.add_build_flag(f"-Wl,--wrap={symbol}")
+            # esp_http_client calls vasprintf, which on the ESP32-C6 is the only
+            # reference to newlib's full printf engine (~20 KB: _svfprintf_r,
+            # _dtoa_r and their helpers); every other caller resolves to the
+            # ROM. See vasprintf_stubs.cpp. The --undefined flag is needed
+            # because libsrc.a is scanned before the IDF libraries that
+            # reference the symbol, so the stub would otherwise never be pulled
+            # from the archive.
+            if variant in ROM_VSNPRINTF_WITHOUT_VASPRINTF_VARIANTS:
+                cg.add_define("USE_ESP32_VASPRINTF_STUB")
+                cg.add_build_flag("-Wl,--wrap=vasprintf")
+                cg.add_build_flag("-Wl,--undefined=__wrap_vasprintf")
     else:
         cg.add_build_flag("-DUSE_ARDUINO")
         cg.add_build_flag("-DUSE_ESP32_FRAMEWORK_ARDUINO")
@@ -2991,6 +3102,13 @@ async def to_code(config):
     # FINAL priority: runs after every require_certificate_bundle() call
     CORE.add_job(_reconcile_certificate_bundle_sdkconfig)
 
+    # FINAL priority: runs after every require_mbedtls_tls_*() call
+    CORE.add_job(
+        _reconcile_mbedtls_tls_sdkconfig,
+        advanced[CONF_DISABLE_MBEDTLS_TLS_SERVER],
+        advanced[CONF_DISABLE_MBEDTLS_TLS_EXTRAS],
+    )
+
     # FINAL: require_*() calls can come from to_code at or below this priority, so an
     # inline read would be iteration-order-dependent; reconcile once after every job ran.
     CORE.add_job(

esphome/components/esp32/vasprintf_stubs.cpp

@@ -0,0 +1,53 @@
+/*
+ * Linker wrap stub for vasprintf() on variants whose ROM exports a
+ * full-format vsnprintf() but no vasprintf() (ESP32-C6, newlib only).
+ *
+ * On those chips every snprintf/vsnprintf call in the image resolves to
+ * the ROM, so the newlib printf engine (_svfprintf_r, _dtoa_r and their
+ * helpers, ~20 KB) is not linked at all until something references a
+ * printf-family function the ROM lacks. esp_http_client does exactly that
+ * through vasprintf() in its header and auth helpers, so adding
+ * http_request to a build costs the whole engine on top of the HTTP and
+ * TLS code itself.
+ *
+ * This stub reimplements vasprintf() on top of the ROM vsnprintf(), which
+ * keeps the engine out of the image. It is only compiled in when codegen
+ * defines USE_ESP32_VASPRINTF_STUB, which is gated on the variant's ROM
+ * linker script and on the same newlib condition as printf_stubs.cpp.
+ */
+
+#include "esphome/core/defines.h"
+
+#if defined(USE_ESP_IDF) && defined(USE_ESP32_VASPRINTF_STUB)
+
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+
+namespace esphome::esp32 {}
+
+// NOLINTBEGIN(bugprone-reserved-identifier,cert-dcl37-c,cert-dcl51-cpp,readability-identifier-naming)
+extern "C" {
+
+int __wrap_vasprintf(char **strp, const char *fmt, va_list ap) {
+  va_list ap_copy;
+  va_copy(ap_copy, ap);
+  int len = vsnprintf(nullptr, 0, fmt, ap_copy);
+  va_end(ap_copy);
+  if (len < 0) {
+    return len;
+  }
+  // vasprintf's contract is a malloc'd buffer the caller releases with free()
+  char *buf = static_cast<char *>(malloc(static_cast<size_t>(len) + 1));  // NOLINT(cppcoreguidelines-no-malloc)
+  if (buf == nullptr) {
+    return -1;
+  }
+  vsnprintf(buf, static_cast<size_t>(len) + 1, fmt, ap);
+  *strp = buf;
+  return len;
+}
+
+}  // extern "C"
+// NOLINTEND(bugprone-reserved-identifier,cert-dcl37-c,cert-dcl51-cpp,readability-identifier-naming)
+
+#endif  // USE_ESP_IDF && USE_ESP32_VASPRINTF_STUB

esphome/components/esp32_ble_server/__init__.py

@@ -3,6 +3,7 @@ import encodings
 from esphome import automation
 import esphome.codegen as cg
 from esphome.components import esp32_ble
+from esphome.components.const import CONF_MANUFACTURER
 from esphome.components.esp32 import request_bluetooth
 from esphome.components.esp32_ble import BTLoggers, bt_uuid
 import esphome.config_validation as cv
@@ -41,7 +42,6 @@ CONF_DESCRIPTORS = "descriptors"
 CONF_ENDIANNESS = "endianness"
 CONF_FIRMWARE_VERSION = "firmware_version"
 CONF_INDICATE = "indicate"
-CONF_MANUFACTURER = "manufacturer"
 CONF_MANUFACTURER_DATA = "manufacturer_data"
 CONF_MAX_CLIENTS = "max_clients"
 CONF_ON_WRITE = "on_write"

esphome/components/infrared/infrared.cpp

@@ -59,11 +59,6 @@ void Infrared::setup() {
   // Set up traits based on configuration
   this->traits_.set_supports_transmitter(this->has_transmitter());
   this->traits_.set_supports_receiver(this->has_receiver());
-
-  // Register as listener for received IR data
-  if (this->receiver_ != nullptr) {
-    this->receiver_->register_listener(this);
-  }
 }
 
 void Infrared::dump_config() {

esphome/components/infrared/infrared.h

@@ -119,7 +119,8 @@ class Infrared : public Component, public EntityBase, public remote_base::Remote
   void dump_config() override;
   float get_setup_priority() const override { return setup_priority::AFTER_CONNECTION; }
 
-  /// Set the remote receiver component
+  /// Set the remote receiver component; the listener registration happens from codegen, see
+  /// remote_base.attach_receiver
   void set_receiver(remote_base::RemoteReceiverBase *receiver) { this->receiver_ = receiver; }
   /// Set the remote transmitter component
   void set_transmitter(remote_base::RemoteTransmitterBase *transmitter) { this->transmitter_ = transmitter; }

esphome/components/ir_rf_proxy/infrared.py

@@ -3,7 +3,12 @@
 from typing import Any
 
 import esphome.codegen as cg
-from esphome.components import infrared, remote_receiver, remote_transmitter
+from esphome.components import (
+    infrared,
+    remote_base,
+    remote_receiver,
+    remote_transmitter,
+)
 from esphome.components.const import CONF_RECEIVER_FREQUENCY
 import esphome.config_validation as cv
 from esphome.const import CONF_CARRIER_DUTY_PERCENT, CONF_FREQUENCY
@@ -82,8 +87,7 @@ async def to_code(config: dict[str, Any]) -> None:
 
     # Link receiver if specified
     if CONF_REMOTE_RECEIVER_ID in config:
-        receiver = await cg.get_variable(config[CONF_REMOTE_RECEIVER_ID])
-        cg.add(var.set_receiver(receiver))
+        await remote_base.attach_receiver(var, config, CONF_REMOTE_RECEIVER_ID)
 
     # Set receiver demodulation frequency if specified (metadata only, no hardware effect)
     if CONF_RECEIVER_FREQUENCY in config:

esphome/components/ir_rf_proxy/ir_rf_proxy.cpp

@@ -97,10 +97,6 @@ void RfProxy::setup() {
 
   // remote_transmitter/receiver always uses OOK (on-off keying)
   this->traits_.add_supported_modulation(radio_frequency::RadioFrequencyModulation::RADIO_FREQUENCY_MODULATION_OOK);
-
-  if (this->receiver_ != nullptr) {
-    this->receiver_->register_listener(this);
-  }
 }
 
 void RfProxy::dump_config() {

esphome/components/ir_rf_proxy/ir_rf_proxy.h

@@ -56,7 +56,8 @@ class RfProxy final : public radio_frequency::RadioFrequency {
 
   /// Set the remote transmitter component
   void set_transmitter(remote_base::RemoteTransmitterBase *transmitter) { this->transmitter_ = transmitter; }
-  /// Set the remote receiver component
+  /// Set the remote receiver component; the listener registration happens from codegen, see
+  /// remote_base.attach_receiver
   void set_receiver(remote_base::RemoteReceiverBase *receiver) { this->receiver_ = receiver; }
 
   /// Set the fixed carrier frequency in Hz (metadata: advertised via traits, does not tune hardware)

esphome/components/ir_rf_proxy/radio_frequency.py

@@ -1,7 +1,12 @@
 """Radio Frequency platform implementation using remote_base (remote_transmitter/receiver)."""
 
 import esphome.codegen as cg
-from esphome.components import radio_frequency, remote_receiver, remote_transmitter
+from esphome.components import (
+    radio_frequency,
+    remote_base,
+    remote_receiver,
+    remote_transmitter,
+)
 import esphome.config_validation as cv
 from esphome.const import CONF_CARRIER_DUTY_PERCENT, CONF_FREQUENCY
 import esphome.final_validate as fv
@@ -66,5 +71,4 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_transmitter(transmitter))
 
     if CONF_REMOTE_RECEIVER_ID in config:
-        receiver = await cg.get_variable(config[CONF_REMOTE_RECEIVER_ID])
-        cg.add(var.set_receiver(receiver))
+        await remote_base.attach_receiver(var, config, CONF_REMOTE_RECEIVER_ID)

esphome/components/lvgl/automation.py

@@ -14,7 +14,7 @@ from esphome.const import (
     CONF_TIMEOUT,
 )
 from esphome.core import Lambda
-from esphome.cpp_generator import TemplateArguments, get_variable
+from esphome.cpp_generator import StaticCastExpression, TemplateArguments, get_variable
 from esphome.cpp_types import nullptr
 
 from .defines import (
@@ -30,7 +30,6 @@ from .defines import (
     CONF_SHOW_SNOW,
     CONF_TOP_LAYER,
     PARTS,
-    StaticCastExpression,
     add_warning,
     get_focused_widgets,
     get_options,

esphome/components/lvgl/defines.py

@@ -10,12 +10,7 @@ from typing import Any
 from esphome import codegen as cg, config_validation as cv
 from esphome.const import CONF_ITEMS
 from esphome.core import CORE, ID, Lambda
-from esphome.cpp_generator import (
-    CallExpression,
-    LambdaExpression,
-    MockObj,
-    MockObjClass,
-)
+from esphome.cpp_generator import MockObj, StaticCastExpression, call_lambda
 from esphome.schema_extractors import SCHEMA_EXTRACT, schema_extractor
 from esphome.types import Expression, SafeExpType
 
@@ -157,17 +152,6 @@ def get_refreshed_widgets() -> set:
     return _get_data(KEY_REFRESHED_WIDGETS, set())
 
 
-class StaticCastExpression(Expression):
-    __slots__ = ("type", "exp")
-
-    def __init__(self, type: Any, exp: SafeExpType):
-        self.type = str(type)
-        self.exp = cg.safe_exp(exp)
-
-    def __str__(self):
-        return f"static_cast<{self.type}>({self.exp})"
-
-
 def add_define(macro: str, value="1"):
     lv_defines = get_defines()
     value = str(value)
@@ -192,31 +176,6 @@ def addr(arg) -> MockObj:
     return MockObj(f"&{arg}")
 
 
-def call_lambda(lamb: LambdaExpression) -> Expression:
-    """
-    Given a lambda, either reduce to a simple expression or call it, possibly with parameters
-    from the surrounding context
-    :param lamb:
-    :return:
-    """
-    expr = lamb.content.strip()
-    if expr.startswith("return") and expr.endswith(";"):
-        # Convert a lambda returning a simple expression to just that expression
-        expr = cg.RawExpression(expr[6:-1].strip())
-        # Don't cast if the return type is a class
-        if isinstance(lamb.return_type, MockObjClass):
-            return expr
-        return StaticCastExpression(lamb.return_type, expr)
-    # If lambda has parameters, call it with their names
-    # Parameter names come from hardcoded component code (like "x", "it", "event")
-    # not from user input, so they're safe to use directly
-    if lamb.parameters and lamb.parameters.parameters:
-        return CallExpression(
-            lamb, *[MockObj(x.id) for x in lamb.parameters.parameters]
-        )
-    return CallExpression(lamb)
-
-
 class LValidator:
     """
     A validator for a particular type used in LVGL. Usable in configs as a validator, also

esphome/components/lvgl/lv_validation.py

@@ -16,7 +16,7 @@ from esphome.const import (
     CONF_VALUE,
 )
 from esphome.core import CORE, ID, Lambda
-from esphome.cpp_generator import MockObj
+from esphome.cpp_generator import MockObj, StaticCastExpression, call_lambda
 from esphome.cpp_types import ESPTime, int32, uint32
 from esphome.helpers import cpp_string_escape
 from esphome.schema_extractors import SCHEMA_EXTRACT, schema_extractor
@@ -33,9 +33,7 @@ from .defines import (
     LV_FONTS,
     LValidator,
     LvConstant,
-    StaticCastExpression,
     add_lv_use,
-    call_lambda,
     get_esphome_fonts_used,
     get_lv_fonts_used,
     get_lv_images_used,

esphome/components/lvgl/widgets/__init__.py

@@ -16,7 +16,7 @@ from esphome.const import (
 )
 from esphome.core import ID, EsphomeError, TimePeriod
 from esphome.coroutine import FakeAwaitable
-from esphome.cpp_generator import MockObj
+from esphome.cpp_generator import MockObj, call_lambda
 from esphome.schema_extractors import EnableSchemaExtraction
 from esphome.types import Expression
 
@@ -42,7 +42,6 @@ from ..defines import (
     STATES,
     LValidator,
     add_lv_use,
-    call_lambda,
     get_styles_used,
     get_theme_widget_map,
     get_widget_map,

esphome/components/midea/climate.py

@@ -1,6 +1,6 @@
 from esphome import automation
 import esphome.codegen as cg
-from esphome.components import climate, remote_transmitter, sensor, uart
+from esphome.components import climate, remote_base, remote_transmitter, sensor, uart
 from esphome.components.climate import ClimateMode, ClimatePreset, ClimateSwingMode
 from esphome.components.remote_base import CONF_TRANSMITTER_ID
 import esphome.config_validation as cv
@@ -280,6 +280,7 @@ async def to_code(config):
     cg.add(var.set_response_timeout(config[CONF_TIMEOUT].total_milliseconds))
     cg.add(var.set_request_attempts(config[CONF_NUM_ATTEMPTS]))
     if CONF_TRANSMITTER_ID in config:
+        remote_base.request_protocol("midea")  # ir_transmitter.h uses it from C++
         cg.add_define("USE_REMOTE_TRANSMITTER")
         transmitter_ = await cg.get_variable(config[CONF_TRANSMITTER_ID])
         cg.add(var.set_transmitter(transmitter_))

esphome/components/midea_ir/climate.py

@@ -1,5 +1,5 @@
 import esphome.codegen as cg
-from esphome.components import climate_ir
+from esphome.components import climate_ir, remote_base
 import esphome.config_validation as cv
 from esphome.const import CONF_USE_FAHRENHEIT
 from esphome.types import ConfigType
@@ -19,5 +19,9 @@ CONFIG_SCHEMA = climate_ir.climate_ir_with_receiver_schema(MideaIR).extend(
 
 
 async def to_code(config: ConfigType) -> None:
+    # midea_ir uses MideaProtocol from C++ and auto-loads coolix, whose coolix.cpp uses
+    # CoolixProtocol even when no coolix climate is configured
+    remote_base.request_protocol("midea")
+    remote_base.request_protocol("coolix")
     var = await climate_ir.new_climate_ir(config)
     cg.add(var.set_fahrenheit(config[CONF_USE_FAHRENHEIT]))

esphome/components/openthread/__init__.py

@@ -13,6 +13,8 @@ from esphome.components.esp32 import (
     get_esp32_variant,
     include_builtin_idf_component,
     only_on_variant,
+    require_mbedtls_tls_extras,
+    require_mbedtls_tls_server,
     require_vfs_select,
 )
 from esphome.components.mdns import MDNSComponent, enable_mdns_storage
@@ -109,6 +111,14 @@ def set_sdkconfig_options(config: ConfigType) -> None:
 
     add_idf_sdkconfig_option("CONFIG_OPENTHREAD_ENABLED", True)
 
+    # OpenThread's DTLS commissioner is a TLS server, and its crypto platform
+    # uses AES-CCM and deterministic ECDSA directly. Keep the esp32 component
+    # from trimming them out of mbedTLS.
+    require_mbedtls_tls_server()
+    require_mbedtls_tls_extras(
+        ("CONFIG_MBEDTLS_CCM_C", "CONFIG_MBEDTLS_ECDSA_DETERMINISTIC")
+    )
+
     if not config.get(CONF_TLV):
         if pan_id := config.get(CONF_PAN_ID):
             add_idf_sdkconfig_option("CONFIG_OPENTHREAD_NETWORK_PANID", pan_id)

esphome/components/remote_base/__init__.py

@@ -1,6 +1,11 @@
+from collections.abc import Callable
+from pathlib import Path
+from typing import Any
+
 from esphome import automation
 import esphome.codegen as cg
 from esphome.components import binary_sensor
+from esphome.config_helpers import filter_source_files_from_defines
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ADDRESS,
@@ -40,11 +45,14 @@ from esphome.const import (
     CONF_ZERO,
 )
 from esphome.core import ID, coroutine
+from esphome.cpp_generator import MockObj
 from esphome.schema_extractors import SCHEMA_EXTRACT, schema_extractor
+from esphome.types import ConfigType
 from esphome.util import Registry, SimpleRegistry
 
 AUTO_LOAD = ["binary_sensor"]
 
+
 CONF_RECEIVER_ID = "receiver_id"
 CONF_TRANSMITTER_ID = "transmitter_id"
 CONF_FIRST = "first"
@@ -90,9 +98,42 @@ REMOTE_TRANSMITTABLE_SCHEMA = cv.Schema(
 )
 
 
-async def register_listener(var, config):
+# Listener and dumper lists are StaticVectors sized from these counts, so every registration
+# must go through add_listener / add_dumper. Every receiver's list gets the same capacity, so
+# the slots are keyed by receiver and the define is the largest count any one receiver needs.
+LISTENER_COUNT_DEFINE = "REMOTE_BASE_LISTENER_COUNT"
+DUMPER_COUNT_DEFINE = "REMOTE_BASE_DUMPER_COUNT"
+
+
+_request_listener_slot = cg.slot_counter(LISTENER_COUNT_DEFINE)
+_request_dumper_slot = cg.slot_counter(DUMPER_COUNT_DEFINE)
+
+
+def add_listener(receiver: MockObj, listener: MockObj) -> None:
+    _request_listener_slot(str(receiver))
+    cg.add(receiver.register_listener(listener))
+
+
+def add_dumper(receiver: MockObj, dumper: MockObj) -> None:
+    _request_dumper_slot(str(receiver))
+    cg.add(receiver.register_dumper(dumper))
+
+
+async def register_listener(var: MockObj, config: ConfigType) -> None:
     receiver = await cg.get_variable(config[CONF_RECEIVER_ID])
-    cg.add(receiver.register_listener(var))
+    add_listener(receiver, var)
+
+
+async def attach_receiver(
+    var: MockObj, config: ConfigType, key: str = CONF_RECEIVER_ID
+) -> None:
+    """Link the configured receiver to an entity and register the entity as its listener.
+
+    The C++ set_receiver() no longer registers the listener; the slot for it is counted here.
+    """
+    receiver = await cg.get_variable(config[key])
+    cg.add(var.set_receiver(receiver))
+    add_listener(receiver, var)
 
 
 async def register_transmittable(var, config):
@@ -100,8 +141,53 @@ async def register_transmittable(var, config):
     cg.add(var.set_transmitter(transmitter_))
 
 
-def register_binary_sensor(name, type, schema):
-    return BINARY_SENSOR_REGISTRY.register(name, type, schema)
+# Registry names that share a protocol source file
+def _protocol_stem(name: str) -> str:
+    if name.startswith("rc_switch"):
+        return "rc_switch"
+    if name == "canalsatld":
+        return "canalsat"
+    return name
+
+
+def protocol_define(name: str) -> str:
+    return f"USE_REMOTE_PROTOCOL_{_protocol_stem(name).upper()}"
+
+
+_PROTOCOL_STEMS = sorted(
+    path.name.removesuffix("_protocol.cpp")
+    for path in Path(__file__).parent.glob("*_protocol.cpp")
+)
+
+
+def request_protocol(name: str) -> None:
+    """Keep a protocol's source file in the build; components using it from C++ must call this."""
+    if _protocol_stem(name) not in _PROTOCOL_STEMS:
+        raise ValueError(
+            f"Unknown remote protocol {name!r}; expected one of {', '.join(_PROTOCOL_STEMS)}"
+        )
+    cg.add_define(protocol_define(name))
+
+
+# Only the protocol sources a configuration uses are compiled
+FILTER_SOURCE_FILES = filter_source_files_from_defines(
+    {f"{stem}_protocol.cpp": protocol_define(stem) for stem in _PROTOCOL_STEMS}
+)
+
+
+def register_binary_sensor(
+    name: str, type: MockObj, schema: cv.Schema | dict
+) -> Callable[[Callable[[MockObj, ConfigType], Any]], Callable]:
+    registerer = BINARY_SENSOR_REGISTRY.register(name, type, schema)
+
+    def decorator(func: Callable[[MockObj, ConfigType], Any]) -> Callable:
+        async def new_func(var: MockObj, config: ConfigType) -> None:
+            request_protocol(name)
+            await coroutine(func)(var, config)
+
+        return registerer(new_func)
+
+    return decorator
 
 
 def register_trigger(name, type, data_type):
@@ -114,6 +200,7 @@ def register_trigger(name, type, data_type):
 
     def decorator(func):
         async def new_func(config):
+            request_protocol(name)
             var = cg.new_Pvariable(config[CONF_TRIGGER_ID])
             await coroutine(func)(var, config)
             await automation.build_automation(var, [(data_type, "x")], config)
@@ -131,6 +218,7 @@ def register_dumper(name, type, schema=None):
 
     def decorator(func):
         async def new_func(config, dumper_id):
+            request_protocol(name)
             var = cg.new_Pvariable(dumper_id)
             await coroutine(func)(var, config)
             return var
@@ -171,6 +259,7 @@ def register_action(name, type_, schema):
 
     def decorator(func):
         async def new_func(config, action_id, template_arg, args):
+            request_protocol(name)
             var = cg.new_Pvariable(action_id, template_arg)
             await register_transmittable(var, config)
             if CONF_REPEAT in config:
@@ -213,7 +302,13 @@ DUMPER_REGISTRY = Registry()
 def validate_dumpers(value):
     if isinstance(value, str) and value.lower() == "all":
         return validate_dumpers(list(DUMPER_REGISTRY.keys()))
-    return cv.validate_registry("dumper", DUMPER_REGISTRY)(value)
+    entries = cv.validate_registry("dumper", DUMPER_REGISTRY)(value)
+    # a dumper listed twice would register twice; the receiver holds one secondary dumper
+    return list(
+        {
+            next(k for k in entry if k in DUMPER_REGISTRY): entry for entry in entries
+        }.values()
+    )
 
 
 def validate_triggers(base_schema):
@@ -1439,7 +1534,7 @@ def validate_rc_switch_raw_code(value):
 
 def build_rc_switch_protocol(config):
     if isinstance(config, int):
-        return rc_switch_protocols[config]
+        return rc_switch_protocol(config)
     pl = config[CONF_PULSE_LENGTH]
     return RCSwitchBase(
         config[CONF_SYNC][0] * pl,
@@ -1526,7 +1621,7 @@ RC_SWITCH_TRANSMITTER = cv.Schema(
     }
 )
 
-rc_switch_protocols = ns.RC_SWITCH_PROTOCOLS
+rc_switch_protocol = ns.rc_switch_protocol
 RCSwitchData = ns.struct("RCSwitchData")
 RCSwitchBase = ns.class_("RCSwitchBase")
 RCSwitchTrigger = ns.class_("RCSwitchTrigger", RemoteReceiverTrigger)

esphome/components/remote_base/abbwelcome_protocol.h

@@ -191,9 +191,9 @@ class ABBWelcomeData {
 
 class ABBWelcomeProtocol : public RemoteProtocol<ABBWelcomeData> {
  public:
-  void encode(RemoteTransmitData *dst, const ABBWelcomeData &src) override;
-  optional<ABBWelcomeData> decode(RemoteReceiveData src) override;
-  void dump(const ABBWelcomeData &data) override;
+  void encode(RemoteTransmitData *dst, const ABBWelcomeData &src);
+  optional<ABBWelcomeData> decode(RemoteReceiveData src);
+  void dump(const ABBWelcomeData &data);
 
  protected:
   void encode_byte_(RemoteTransmitData *dst, uint8_t data) const;

esphome/components/remote_base/aeha_protocol.h

@@ -15,9 +15,9 @@ struct AEHAData {
 
 class AEHAProtocol : public RemoteProtocol<AEHAData> {
  public:
-  void encode(RemoteTransmitData *dst, const AEHAData &data) override;
-  optional<AEHAData> decode(RemoteReceiveData src) override;
-  void dump(const AEHAData &data) override;
+  void encode(RemoteTransmitData *dst, const AEHAData &data);
+  optional<AEHAData> decode(RemoteReceiveData src);
+  void dump(const AEHAData &data);
 
  private:
   std::string format_data_(const std::vector<uint8_t> &data);

esphome/components/remote_base/beo4_protocol.h

@@ -16,9 +16,9 @@ struct Beo4Data {
 
 class Beo4Protocol : public RemoteProtocol<Beo4Data> {
  public:
-  void encode(RemoteTransmitData *dst, const Beo4Data &data) override;
-  optional<Beo4Data> decode(RemoteReceiveData src) override;
-  void dump(const Beo4Data &data) override;
+  void encode(RemoteTransmitData *dst, const Beo4Data &data);
+  optional<Beo4Data> decode(RemoteReceiveData src);
+  void dump(const Beo4Data &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Beo4)

esphome/components/remote_base/brennenstuhl_protocol.h

@@ -13,9 +13,9 @@ struct BrennenstuhlData {
 
 class BrennenstuhlProtocol : public RemoteProtocol<BrennenstuhlData> {
  public:
-  void encode(RemoteTransmitData *dst, const BrennenstuhlData &data) override;
-  optional<BrennenstuhlData> decode(RemoteReceiveData src) override;
-  void dump(const BrennenstuhlData &data) override;
+  void encode(RemoteTransmitData *dst, const BrennenstuhlData &data);
+  optional<BrennenstuhlData> decode(RemoteReceiveData src);
+  void dump(const BrennenstuhlData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Brennenstuhl)

esphome/components/remote_base/byronsx_protocol.h

@@ -21,9 +21,9 @@ struct ByronSXData {
 
 class ByronSXProtocol : public RemoteProtocol<ByronSXData> {
  public:
-  void encode(RemoteTransmitData *dst, const ByronSXData &data) override;
-  optional<ByronSXData> decode(RemoteReceiveData src) override;
-  void dump(const ByronSXData &data) override;
+  void encode(RemoteTransmitData *dst, const ByronSXData &data);
+  optional<ByronSXData> decode(RemoteReceiveData src);
+  void dump(const ByronSXData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(ByronSX)

esphome/components/remote_base/canalsat_protocol.h

@@ -19,9 +19,9 @@ struct CanalSatLDData : public CanalSatData {};
 
 class CanalSatBaseProtocol : public RemoteProtocol<CanalSatData> {
  public:
-  void encode(RemoteTransmitData *dst, const CanalSatData &data) override;
-  optional<CanalSatData> decode(RemoteReceiveData src) override;
-  void dump(const CanalSatData &data) override;
+  void encode(RemoteTransmitData *dst, const CanalSatData &data);
+  optional<CanalSatData> decode(RemoteReceiveData src);
+  void dump(const CanalSatData &data);
 
  protected:
   uint16_t frequency_;

esphome/components/remote_base/coolix_protocol.h

@@ -21,9 +21,9 @@ struct CoolixData {
 
 class CoolixProtocol : public RemoteProtocol<CoolixData> {
  public:
-  void encode(RemoteTransmitData *dst, const CoolixData &data) override;
-  optional<CoolixData> decode(RemoteReceiveData data) override;
-  void dump(const CoolixData &data) override;
+  void encode(RemoteTransmitData *dst, const CoolixData &data);
+  optional<CoolixData> decode(RemoteReceiveData data);
+  void dump(const CoolixData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Coolix)

esphome/components/remote_base/dish_protocol.h

@@ -13,9 +13,9 @@ struct DishData {
 
 class DishProtocol : public RemoteProtocol<DishData> {
  public:
-  void encode(RemoteTransmitData *dst, const DishData &data) override;
-  optional<DishData> decode(RemoteReceiveData src) override;
-  void dump(const DishData &data) override;
+  void encode(RemoteTransmitData *dst, const DishData &data);
+  optional<DishData> decode(RemoteReceiveData src);
+  void dump(const DishData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Dish)

esphome/components/remote_base/dooya_protocol.h

@@ -20,9 +20,9 @@ struct DooyaData {
 
 class DooyaProtocol : public RemoteProtocol<DooyaData> {
  public:
-  void encode(RemoteTransmitData *dst, const DooyaData &data) override;
-  optional<DooyaData> decode(RemoteReceiveData src) override;
-  void dump(const DooyaData &data) override;
+  void encode(RemoteTransmitData *dst, const DooyaData &data);
+  optional<DooyaData> decode(RemoteReceiveData src);
+  void dump(const DooyaData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Dooya)

esphome/components/remote_base/drayton_protocol.h

@@ -19,9 +19,9 @@ struct DraytonData {
 
 class DraytonProtocol : public RemoteProtocol<DraytonData> {
  public:
-  void encode(RemoteTransmitData *dst, const DraytonData &data) override;
-  optional<DraytonData> decode(RemoteReceiveData src) override;
-  void dump(const DraytonData &data) override;
+  void encode(RemoteTransmitData *dst, const DraytonData &data);
+  optional<DraytonData> decode(RemoteReceiveData src);
+  void dump(const DraytonData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Drayton)

esphome/components/remote_base/dyson_protocol.h

@@ -21,9 +21,9 @@ struct DysonData {
 
 class DysonProtocol : public RemoteProtocol<DysonData> {
  public:
-  void encode(RemoteTransmitData *dst, const DysonData &data) override;
-  optional<DysonData> decode(RemoteReceiveData src) override;
-  void dump(const DysonData &data) override;
+  void encode(RemoteTransmitData *dst, const DysonData &data);
+  optional<DysonData> decode(RemoteReceiveData src);
+  void dump(const DysonData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Dyson)

esphome/components/remote_base/gobox_protocol.h

@@ -31,9 +31,9 @@ class GoboxProtocol : public RemoteProtocol<GoboxData> {
   void dump_timings_(const RawTimings &timings) const;
 
  public:
-  void encode(RemoteTransmitData *dst, const GoboxData &data) override;
-  optional<GoboxData> decode(RemoteReceiveData src) override;
-  void dump(const GoboxData &data) override;
+  void encode(RemoteTransmitData *dst, const GoboxData &data);
+  optional<GoboxData> decode(RemoteReceiveData src);
+  void dump(const GoboxData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Gobox)

esphome/components/remote_base/haier_protocol.h

@@ -13,9 +13,9 @@ struct HaierData {
 
 class HaierProtocol : public RemoteProtocol<HaierData> {
  public:
-  void encode(RemoteTransmitData *dst, const HaierData &data) override;
-  optional<HaierData> decode(RemoteReceiveData src) override;
-  void dump(const HaierData &data) override;
+  void encode(RemoteTransmitData *dst, const HaierData &data);
+  optional<HaierData> decode(RemoteReceiveData src);
+  void dump(const HaierData &data);
 
  protected:
   void encode_byte_(RemoteTransmitData *dst, uint8_t item);

esphome/components/remote_base/jvc_protocol.h

@@ -14,9 +14,9 @@ struct JVCData {
 
 class JVCProtocol : public RemoteProtocol<JVCData> {
  public:
-  void encode(RemoteTransmitData *dst, const JVCData &data) override;
-  optional<JVCData> decode(RemoteReceiveData src) override;
-  void dump(const JVCData &data) override;
+  void encode(RemoteTransmitData *dst, const JVCData &data);
+  optional<JVCData> decode(RemoteReceiveData src);
+  void dump(const JVCData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(JVC)

esphome/components/remote_base/keeloq_protocol.h

@@ -24,9 +24,9 @@ struct KeeloqData {
 
 class KeeloqProtocol : public RemoteProtocol<KeeloqData> {
  public:
-  void encode(RemoteTransmitData *dst, const KeeloqData &data) override;
-  optional<KeeloqData> decode(RemoteReceiveData src) override;
-  void dump(const KeeloqData &data) override;
+  void encode(RemoteTransmitData *dst, const KeeloqData &data);
+  optional<KeeloqData> decode(RemoteReceiveData src);
+  void dump(const KeeloqData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Keeloq)

esphome/components/remote_base/lg_protocol.h

@@ -16,9 +16,9 @@ struct LGData {
 
 class LGProtocol : public RemoteProtocol<LGData> {
  public:
-  void encode(RemoteTransmitData *dst, const LGData &data) override;
-  optional<LGData> decode(RemoteReceiveData src) override;
-  void dump(const LGData &data) override;
+  void encode(RemoteTransmitData *dst, const LGData &data);
+  optional<LGData> decode(RemoteReceiveData src);
+  void dump(const LGData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(LG)

esphome/components/remote_base/magiquest_protocol.h

@@ -27,9 +27,9 @@ struct MagiQuestData {
 
 class MagiQuestProtocol : public RemoteProtocol<MagiQuestData> {
  public:
-  void encode(RemoteTransmitData *dst, const MagiQuestData &data) override;
-  optional<MagiQuestData> decode(RemoteReceiveData src) override;
-  void dump(const MagiQuestData &data) override;
+  void encode(RemoteTransmitData *dst, const MagiQuestData &data);
+  optional<MagiQuestData> decode(RemoteReceiveData src);
+  void dump(const MagiQuestData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(MagiQuest)

esphome/components/remote_base/midea_protocol.h

@@ -67,9 +67,9 @@ class MideaData {
 
 class MideaProtocol : public RemoteProtocol<MideaData> {
  public:
-  void encode(RemoteTransmitData *dst, const MideaData &src) override;
-  optional<MideaData> decode(RemoteReceiveData src) override;
-  void dump(const MideaData &data) override;
+  void encode(RemoteTransmitData *dst, const MideaData &src);
+  optional<MideaData> decode(RemoteReceiveData src);
+  void dump(const MideaData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Midea)

esphome/components/remote_base/mirage_protocol.h

@@ -13,9 +13,9 @@ struct MirageData {
 
 class MirageProtocol : public RemoteProtocol<MirageData> {
  public:
-  void encode(RemoteTransmitData *dst, const MirageData &data) override;
-  optional<MirageData> decode(RemoteReceiveData src) override;
-  void dump(const MirageData &data) override;
+  void encode(RemoteTransmitData *dst, const MirageData &data);
+  optional<MirageData> decode(RemoteReceiveData src);
+  void dump(const MirageData &data);
 
  protected:
   void encode_byte_(RemoteTransmitData *dst, uint8_t item);

esphome/components/remote_base/nec_protocol.h

@@ -14,9 +14,9 @@ struct NECData {
 
 class NECProtocol : public RemoteProtocol<NECData> {
  public:
-  void encode(RemoteTransmitData *dst, const NECData &data) override;
-  optional<NECData> decode(RemoteReceiveData src) override;
-  void dump(const NECData &data) override;
+  void encode(RemoteTransmitData *dst, const NECData &data);
+  optional<NECData> decode(RemoteReceiveData src);
+  void dump(const NECData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(NEC)

esphome/components/remote_base/nexa_protocol.h

@@ -24,9 +24,9 @@ class NexaProtocol : public RemoteProtocol<NexaData> {
   void zero(RemoteTransmitData *dst) const;
   void sync(RemoteTransmitData *dst) const;
 
-  void encode(RemoteTransmitData *dst, const NexaData &data) override;
-  optional<NexaData> decode(RemoteReceiveData src) override;
-  void dump(const NexaData &data) override;
+  void encode(RemoteTransmitData *dst, const NexaData &data);
+  optional<NexaData> decode(RemoteReceiveData src);
+  void dump(const NexaData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Nexa)

esphome/components/remote_base/panasonic_protocol.h

@@ -16,9 +16,9 @@ struct PanasonicData {
 
 class PanasonicProtocol : public RemoteProtocol<PanasonicData> {
  public:
-  void encode(RemoteTransmitData *dst, const PanasonicData &data) override;
-  optional<PanasonicData> decode(RemoteReceiveData src) override;
-  void dump(const PanasonicData &data) override;
+  void encode(RemoteTransmitData *dst, const PanasonicData &data);
+  optional<PanasonicData> decode(RemoteReceiveData src);
+  void dump(const PanasonicData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Panasonic)

esphome/components/remote_base/pioneer_protocol.h

@@ -13,9 +13,9 @@ struct PioneerData {
 
 class PioneerProtocol : public RemoteProtocol<PioneerData> {
  public:
-  void encode(RemoteTransmitData *dst, const PioneerData &data) override;
-  optional<PioneerData> decode(RemoteReceiveData src) override;
-  void dump(const PioneerData &data) override;
+  void encode(RemoteTransmitData *dst, const PioneerData &data);
+  optional<PioneerData> decode(RemoteReceiveData src);
+  void dump(const PioneerData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Pioneer)

esphome/components/remote_base/pronto_protocol.h

@@ -30,9 +30,9 @@ class ProntoProtocol : public RemoteProtocol<ProntoData> {
   std::string compensate_and_dump_sequence_(const RawTimings &data, uint16_t timebase);
 
  public:
-  void encode(RemoteTransmitData *dst, const ProntoData &data) override;
-  optional<ProntoData> decode(RemoteReceiveData src) override;
-  void dump(const ProntoData &data) override;
+  void encode(RemoteTransmitData *dst, const ProntoData &data);
+  optional<ProntoData> decode(RemoteReceiveData src);
+  void dump(const ProntoData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Pronto)

esphome/components/remote_base/rc5_protocol.h

@@ -14,9 +14,9 @@ struct RC5Data {
 
 class RC5Protocol : public RemoteProtocol<RC5Data> {
  public:
-  void encode(RemoteTransmitData *dst, const RC5Data &data) override;
-  optional<RC5Data> decode(RemoteReceiveData src) override;
-  void dump(const RC5Data &data) override;
+  void encode(RemoteTransmitData *dst, const RC5Data &data);
+  optional<RC5Data> decode(RemoteReceiveData src);
+  void dump(const RC5Data &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(RC5)

esphome/components/remote_base/rc6_protocol.h

@@ -15,9 +15,9 @@ struct RC6Data {
 
 class RC6Protocol : public RemoteProtocol<RC6Data> {
  public:
-  void encode(RemoteTransmitData *dst, const RC6Data &data) override;
-  optional<RC6Data> decode(RemoteReceiveData src) override;
-  void dump(const RC6Data &data) override;
+  void encode(RemoteTransmitData *dst, const RC6Data &data);
+  optional<RC6Data> decode(RemoteReceiveData src);
+  void dump(const RC6Data &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(RC6)

esphome/components/remote_base/rc_switch_protocol.cpp

@@ -1,29 +1,21 @@
 #include "rc_switch_protocol.h"
+
+#include <iterator>
+#include "esphome/core/hal.h"
 #include "esphome/core/log.h"
 
 namespace esphome::remote_base {
 
 static const char *const TAG = "remote.rc_switch";
 
-const RCSwitchBase RC_SWITCH_PROTOCOLS[9] = {RCSwitchBase(0, 0, 0, 0, 0, 0, false),
-                                             RCSwitchBase(350, 10850, 350, 1050, 1050, 350, false),
-                                             RCSwitchBase(650, 6500, 650, 1300, 1300, 650, false),
-                                             RCSwitchBase(3000, 7100, 400, 1100, 900, 600, false),
-                                             RCSwitchBase(380, 2280, 380, 1140, 1140, 380, false),
-                                             RCSwitchBase(3000, 7000, 500, 1000, 1000, 500, false),
-                                             RCSwitchBase(10350, 450, 450, 900, 900, 450, true),
-                                             RCSwitchBase(300, 9300, 150, 900, 900, 150, false),
-                                             RCSwitchBase(250, 2500, 250, 1250, 250, 250, false)};
-
-RCSwitchBase::RCSwitchBase(uint32_t sync_high, uint32_t sync_low, uint32_t zero_high, uint32_t zero_low,
-                           uint32_t one_high, uint32_t one_low, bool inverted)
-    : sync_high_(sync_high),
-      sync_low_(sync_low),
-      zero_high_(zero_high),
-      zero_low_(zero_low),
-      one_high_(one_high),
-      one_low_(one_low),
-      inverted_(inverted) {}
+RCSwitchBase rc_switch_protocol(uint8_t index) {
+  RCSwitchBase protocol;
+  // entry 0 is the all-zero protocol, so an out of range index from a lambda transmits nothing
+  if (index >= std::size(RC_SWITCH_PROTOCOLS))
+    index = 0;
+  progmem_memcpy(&protocol, &RC_SWITCH_PROTOCOLS[index], sizeof(protocol));
+  return protocol;
+}
 
 void RCSwitchBase::one(RemoteTransmitData *dst) const {
   if (!this->inverted_) {
@@ -133,11 +125,11 @@ bool RCSwitchBase::decode(RemoteReceiveData &src, uint64_t *out_data, uint8_t *o
 optional<RCSwitchData> RCSwitchBase::decode(RemoteReceiveData &src) const {
   RCSwitchData out;
   uint8_t out_nbits;
-  for (uint8_t i = 1; i <= 8; i++) {
+  for (size_t i = 1; i < std::size(RC_SWITCH_PROTOCOLS); i++) {
     src.reset();
     const RCSwitchBase *protocol = &RC_SWITCH_PROTOCOLS[i];
     if (protocol->decode(src, &out.code, &out_nbits) && out_nbits >= 3) {
-      out.protocol = i;
+      out.protocol = static_cast<uint8_t>(i);
       return out;
     }
   }
@@ -246,7 +238,7 @@ bool RCSwitchRawReceiver::matches(RemoteReceiveData src) {
   return decoded_nbits == this->nbits_ && (decoded_code & this->mask_) == (this->code_ & this->mask_);
 }
 bool RCSwitchDumper::dump(RemoteReceiveData src) {
-  for (uint8_t i = 1; i <= 8; i++) {
+  for (size_t i = 1; i < std::size(RC_SWITCH_PROTOCOLS); i++) {
     src.reset();
     uint64_t out_data;
     uint8_t out_nbits;
@@ -257,7 +249,7 @@ bool RCSwitchDumper::dump(RemoteReceiveData src) {
         buffer[j] = (out_data & ((uint64_t) 1 << (out_nbits - j - 1))) ? '1' : '0';
 
       buffer[out_nbits] = '\0';
-      ESP_LOGI(TAG, "Received RCSwitch Raw: protocol=%u data='%s'", i, buffer);
+      ESP_LOGI(TAG, "Received RCSwitch Raw: protocol=%u data='%s'", static_cast<unsigned>(i), buffer);
 
       // only send first decoded protocol
       return true;

esphome/components/remote_base/rc_switch_protocol.h

@@ -16,9 +16,16 @@ class RCSwitchBase {
  public:
   using ProtocolData = RCSwitchData;
 
-  RCSwitchBase() = default;
-  RCSwitchBase(uint32_t sync_high, uint32_t sync_low, uint32_t zero_high, uint32_t zero_low, uint32_t one_high,
-               uint32_t one_low, bool inverted);
+  constexpr RCSwitchBase() = default;
+  constexpr RCSwitchBase(uint32_t sync_high, uint32_t sync_low, uint32_t zero_high, uint32_t zero_low,
+                         uint32_t one_high, uint32_t one_low, bool inverted)
+      : sync_high_(sync_high),
+        sync_low_(sync_low),
+        zero_high_(zero_high),
+        zero_low_(zero_low),
+        one_high_(one_high),
+        one_low_(one_low),
+        inverted_(inverted) {}
 
   void one(RemoteTransmitData *dst) const;
 
@@ -58,10 +65,28 @@ class RCSwitchBase {
   uint32_t zero_low_{};
   uint32_t one_high_{};
   uint32_t one_low_{};
-  bool inverted_{};
+  uint32_t inverted_{};  // bool widened so every field is a word: the table is read from flash
 };
 
-extern const RCSwitchBase RC_SWITCH_PROTOCOLS[9];
+// Constant-initialized and kept in flash on every platform. The decoder reads entries in place
+// through a pointer, which ESP8266 only allows while every field is a whole word; copies out of
+// the table go through rc_switch_protocol()
+static_assert(sizeof(RCSwitchBase) == 7 * sizeof(uint32_t), "RCSwitchBase must stay word-only for flash reads");
+inline constexpr RCSwitchBase RC_SWITCH_PROTOCOLS[] PROGMEM = {
+    {0, 0, 0, 0, 0, 0, false},
+    {350, 10850, 350, 1050, 1050, 350, false},
+    {650, 6500, 650, 1300, 1300, 650, false},
+    {3000, 7100, 400, 1100, 900, 600, false},
+    {380, 2280, 380, 1140, 1140, 380, false},
+    {3000, 7000, 500, 1000, 1000, 500, false},
+    {10350, 450, 450, 900, 900, 450, true},
+    {300, 9300, 150, 900, 900, 150, false},
+    {250, 2500, 250, 1250, 250, 250, false},
+};
+
+/// RAM copy of RC_SWITCH_PROTOCOLS[index] (0 when out of range) for the transmit actions and the dumper, made with
+/// progmem_memcpy so no byte load ever touches the flash table on ESP8266
+RCSwitchBase rc_switch_protocol(uint8_t index);
 
 uint64_t decode_binary_string(const std::string &data);
 

esphome/components/remote_base/remote_base.cpp

@@ -99,29 +99,48 @@ bool RemoteReceiverBinarySensorBase::on_receive(RemoteReceiveData src) {
 
 /* RemoteReceiverBase */
 
+// Slots are counted at code generation; a registration from C++ setup() has none
+#ifdef REMOTE_BASE_LISTENER_COUNT
+void RemoteReceiverBase::register_listener(RemoteReceiverListener *listener) {
+  if (this->listeners_.size() == REMOTE_BASE_LISTENER_COUNT) {
+    ESP_LOGE(TAG, "No %s slot: register it from to_code() with remote_base.add_%s", LOG_STR_LITERAL("listener"),
+             LOG_STR_LITERAL("listener"));
+    return;
+  }
+  this->listeners_.push_back(listener);
+}
+#endif
+
+#ifdef REMOTE_BASE_DUMPER_COUNT
 void RemoteReceiverBase::register_dumper(RemoteReceiverDumperBase *dumper) {
   if (dumper->is_secondary()) {
-    this->secondary_dumpers_.push_back(dumper);
-  } else {
+    if (this->secondary_dumper_ == nullptr) {
+      this->secondary_dumper_ = dumper;
+      return;
+    }
+  } else if (this->dumpers_.size() != REMOTE_BASE_DUMPER_COUNT) {
     this->dumpers_.push_back(dumper);
+    return;
   }
+  ESP_LOGE(TAG, "No %s slot: register it from to_code() with remote_base.add_%s", LOG_STR_LITERAL("dumper"),
+           LOG_STR_LITERAL("dumper"));
 }
+#endif
 
-void RemoteReceiverBase::call_listeners_() {
+void RemoteReceiverBase::call_listeners_dumpers_() {
+#ifdef REMOTE_BASE_LISTENER_COUNT
   for (auto *listener : this->listeners_)
     listener->on_receive(RemoteReceiveData(this->temp_, this->tolerance_, this->tolerance_mode_));
-}
-
-void RemoteReceiverBase::call_dumpers_() {
+#endif
+#ifdef REMOTE_BASE_DUMPER_COUNT
   bool success = false;
   for (auto *dumper : this->dumpers_) {
     if (dumper->dump(RemoteReceiveData(this->temp_, this->tolerance_, this->tolerance_mode_)))
       success = true;
   }
-  if (!success) {
-    for (auto *dumper : this->secondary_dumpers_)
-      dumper->dump(RemoteReceiveData(this->temp_, this->tolerance_, this->tolerance_mode_));
-  }
+  if (!success && this->secondary_dumper_ != nullptr)
+    this->secondary_dumper_->dump(RemoteReceiveData(this->temp_, this->tolerance_, this->tolerance_mode_));
+#endif
 }
 
 void RemoteReceiverBinarySensorBase::dump_config() { LOG_BINARY_SENSOR("", "Remote Receiver Binary Sensor", this); }

esphome/components/remote_base/remote_base.h

@@ -1,12 +1,14 @@
+#pragma once
+
+#include <concepts>
 #include <utility>
 #include <vector>
 
-#pragma once
-
 #include "esphome/components/binary_sensor/binary_sensor.h"
 #include "esphome/core/automation.h"
 #include "esphome/core/component.h"
 #include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
 
 namespace esphome::remote_base {
 
@@ -141,6 +143,22 @@ class RemoteRMTChannel {
 #endif  // SOC_RMT_SUPPORTED
 #endif  // USE_ESP32
 
+// Protocol shapes, checked where a protocol is used so a missing method fails at the use site
+// instead of deep inside a template body. Receive-only protocols such as RCSwitchBase decode
+// without encoding.
+template<typename T>
+concept RemoteProtocolDecoder = requires(T proto, RemoteReceiveData src) {
+  { proto.decode(src) } -> std::same_as<optional<typename T::ProtocolData>>;
+};
+template<typename T>
+concept RemoteProtocolDumper = RemoteProtocolDecoder<T> && requires(T proto, const typename T::ProtocolData &data) {
+  proto.dump(data);
+};
+template<typename T>
+concept RemoteProtocolEncoder = requires(T proto, RemoteTransmitData *dst, const typename T::ProtocolData &data) {
+  proto.encode(dst, data);
+};
+
 class RemoteTransmitterBase : public RemoteComponentBase {
  public:
   RemoteTransmitterBase(InternalGPIOPin *pin) : RemoteComponentBase(pin) {}
@@ -162,8 +180,8 @@ class RemoteTransmitterBase : public RemoteComponentBase {
     this->temp_.reset();
     return TransmitCall(this);
   }
-  template<typename Protocol>
-  void transmit(const Protocol::ProtocolData &data, uint32_t send_times = 1, uint32_t send_wait = 0) {
+  template<RemoteProtocolEncoder Protocol>
+  void transmit(const typename Protocol::ProtocolData &data, uint32_t send_times = 1, uint32_t send_wait = 0) {
     auto call = this->transmit();
     Protocol().encode(call.get_data(), data);
     call.set_send_times(send_times);
@@ -194,24 +212,37 @@ class RemoteReceiverDumperBase {
 class RemoteReceiverBase : public RemoteComponentBase {
  public:
   RemoteReceiverBase(InternalGPIOPin *pin) : RemoteComponentBase(pin) {}
-  void register_listener(RemoteReceiverListener *listener) { this->listeners_.push_back(listener); }
+  // Slots are counted at code generation; without one the call fails at compile time with the same message
+  // the runtime check logs
+#ifdef REMOTE_BASE_LISTENER_COUNT
+  void register_listener(RemoteReceiverListener *listener);
+#else
+  template<typename T> void register_listener(T *) {
+    static_assert(sizeof(T) == 0, "No listener slot: register it from to_code() with remote_base.add_listener");
+  }
+#endif
+#ifdef REMOTE_BASE_DUMPER_COUNT
   void register_dumper(RemoteReceiverDumperBase *dumper);
+#else
+  template<typename T> void register_dumper(T *) {
+    static_assert(sizeof(T) == 0, "No dumper slot: register it from to_code() with remote_base.add_dumper");
+  }
+#endif
   void set_tolerance(uint32_t tolerance, ToleranceMode tolerance_mode) {
     this->tolerance_ = tolerance;
     this->tolerance_mode_ = tolerance_mode;
   }
 
  protected:
-  void call_listeners_();
-  void call_dumpers_();
-  void call_listeners_dumpers_() {
-    this->call_listeners_();
-    this->call_dumpers_();
-  }
+  void call_listeners_dumpers_();
 
-  std::vector<RemoteReceiverListener *> listeners_;
-  std::vector<RemoteReceiverDumperBase *> dumpers_;
-  std::vector<RemoteReceiverDumperBase *> secondary_dumpers_;
+#ifdef REMOTE_BASE_LISTENER_COUNT
+  StaticVector<RemoteReceiverListener *, REMOTE_BASE_LISTENER_COUNT> listeners_;
+#endif
+#ifdef REMOTE_BASE_DUMPER_COUNT
+  StaticVector<RemoteReceiverDumperBase *, REMOTE_BASE_DUMPER_COUNT> dumpers_;
+  RemoteReceiverDumperBase *secondary_dumper_{nullptr};  // runs only when no primary dumper matched
+#endif
   RawTimings temp_;
   uint32_t tolerance_{25};
   ToleranceMode tolerance_mode_{TOLERANCE_MODE_PERCENTAGE};
@@ -229,15 +260,14 @@ class RemoteReceiverBinarySensorBase : public binary_sensor::BinarySensorInitial
 
 /* TEMPLATES */
 
+// Protocols are used only through their concrete type (see the RemoteProtocol* concepts); encode/decode/dump
+// stay non-virtual so unused ones link out
 template<typename T> class RemoteProtocol {
  public:
   using ProtocolData = T;
-  virtual void encode(RemoteTransmitData *dst, const ProtocolData &data) = 0;
-  virtual optional<ProtocolData> decode(RemoteReceiveData src) = 0;
-  virtual void dump(const ProtocolData &data) = 0;
 };
 
-template<typename T> class RemoteReceiverBinarySensor : public RemoteReceiverBinarySensorBase {
+template<RemoteProtocolDecoder T> class RemoteReceiverBinarySensor : public RemoteReceiverBinarySensorBase {
  public:
   RemoteReceiverBinarySensor() : RemoteReceiverBinarySensorBase() {}
 
@@ -255,7 +285,7 @@ template<typename T> class RemoteReceiverBinarySensor : public RemoteReceiverBin
   T::ProtocolData data_;
 };
 
-template<typename T>
+template<RemoteProtocolDecoder T>
 class RemoteReceiverTrigger final : public Trigger<typename T::ProtocolData>, public RemoteReceiverListener {
  protected:
   bool on_receive(RemoteReceiveData src) override {
@@ -276,8 +306,8 @@ class RemoteTransmittable {
   void set_transmitter(RemoteTransmitterBase *transmitter) { this->transmitter_ = transmitter; }
 
  protected:
-  template<typename Protocol>
-  void transmit_(const Protocol::ProtocolData &data, uint32_t send_times = 1, uint32_t send_wait = 0) {
+  template<RemoteProtocolEncoder Protocol>
+  void transmit_(const typename Protocol::ProtocolData &data, uint32_t send_times = 1, uint32_t send_wait = 0) {
     this->transmitter_->transmit<Protocol>(data, send_times, send_wait);
   }
   RemoteTransmitterBase *transmitter_;
@@ -298,7 +328,7 @@ template<typename... Ts> class RemoteTransmitterActionBase : public RemoteTransm
   virtual void encode(RemoteTransmitData *dst, Ts... x) = 0;
 };
 
-template<typename T> class RemoteReceiverDumper : public RemoteReceiverDumperBase {
+template<RemoteProtocolDumper T> class RemoteReceiverDumper : public RemoteReceiverDumperBase {
  public:
   bool dump(RemoteReceiveData src) override {
     auto proto = T();

esphome/components/remote_base/roomba_protocol.h

@@ -12,9 +12,9 @@ struct RoombaData {
 
 class RoombaProtocol : public RemoteProtocol<RoombaData> {
  public:
-  void encode(RemoteTransmitData *dst, const RoombaData &data) override;
-  optional<RoombaData> decode(RemoteReceiveData src) override;
-  void dump(const RoombaData &data) override;
+  void encode(RemoteTransmitData *dst, const RoombaData &data);
+  optional<RoombaData> decode(RemoteReceiveData src);
+  void dump(const RoombaData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Roomba)

esphome/components/remote_base/samsung36_protocol.h

@@ -16,9 +16,9 @@ struct Samsung36Data {
 
 class Samsung36Protocol : public RemoteProtocol<Samsung36Data> {
  public:
-  void encode(RemoteTransmitData *dst, const Samsung36Data &data) override;
-  optional<Samsung36Data> decode(RemoteReceiveData src) override;
-  void dump(const Samsung36Data &data) override;
+  void encode(RemoteTransmitData *dst, const Samsung36Data &data);
+  optional<Samsung36Data> decode(RemoteReceiveData src);
+  void dump(const Samsung36Data &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Samsung36)

esphome/components/remote_base/samsung_protocol.h

@@ -14,9 +14,9 @@ struct SamsungData {
 
 class SamsungProtocol : public RemoteProtocol<SamsungData> {
  public:
-  void encode(RemoteTransmitData *dst, const SamsungData &data) override;
-  optional<SamsungData> decode(RemoteReceiveData src) override;
-  void dump(const SamsungData &data) override;
+  void encode(RemoteTransmitData *dst, const SamsungData &data);
+  optional<SamsungData> decode(RemoteReceiveData src);
+  void dump(const SamsungData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Samsung)

esphome/components/remote_base/sony_protocol.h

@@ -16,9 +16,9 @@ struct SonyData {
 
 class SonyProtocol : public RemoteProtocol<SonyData> {
  public:
-  void encode(RemoteTransmitData *dst, const SonyData &data) override;
-  optional<SonyData> decode(RemoteReceiveData src) override;
-  void dump(const SonyData &data) override;
+  void encode(RemoteTransmitData *dst, const SonyData &data);
+  optional<SonyData> decode(RemoteReceiveData src);
+  void dump(const SonyData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Sony)

esphome/components/remote_base/symphony_protocol.h

@@ -17,9 +17,9 @@ struct SymphonyData {
 
 class SymphonyProtocol : public RemoteProtocol<SymphonyData> {
  public:
-  void encode(RemoteTransmitData *dst, const SymphonyData &data) override;
-  optional<SymphonyData> decode(RemoteReceiveData src) override;
-  void dump(const SymphonyData &data) override;
+  void encode(RemoteTransmitData *dst, const SymphonyData &data);
+  optional<SymphonyData> decode(RemoteReceiveData src);
+  void dump(const SymphonyData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Symphony)

esphome/components/remote_base/toshiba_ac_protocol.h

@@ -14,9 +14,9 @@ struct ToshibaAcData {
 
 class ToshibaAcProtocol : public RemoteProtocol<ToshibaAcData> {
  public:
-  void encode(RemoteTransmitData *dst, const ToshibaAcData &data) override;
-  optional<ToshibaAcData> decode(RemoteReceiveData src) override;
-  void dump(const ToshibaAcData &data) override;
+  void encode(RemoteTransmitData *dst, const ToshibaAcData &data);
+  optional<ToshibaAcData> decode(RemoteReceiveData src);
+  void dump(const ToshibaAcData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(ToshibaAc)

esphome/components/remote_base/toto_protocol.h

@@ -16,9 +16,9 @@ struct TotoData {
 
 class TotoProtocol : public RemoteProtocol<TotoData> {
  public:
-  void encode(RemoteTransmitData *dst, const TotoData &data) override;
-  optional<TotoData> decode(RemoteReceiveData src) override;
-  void dump(const TotoData &data) override;
+  void encode(RemoteTransmitData *dst, const TotoData &data);
+  optional<TotoData> decode(RemoteReceiveData src);
+  void dump(const TotoData &data);
 };
 
 DECLARE_REMOTE_PROTOCOL(Toto)

esphome/components/remote_receiver/__init__.py

@@ -114,15 +114,18 @@ CONFIG_SCHEMA = remote_base.validate_triggers(
             cv.Optional(CONF_TOLERANCE, default="25%"): validate_tolerance,
             cv.SplitDefault(
                 CONF_BUFFER_SIZE,
-                esp32="10000b",
-                esp32_c2="1000b",
-                esp32_c61="1000b",
+                esp32=cv.UNDEFINED,
+                # the pulse ring needs a size; only RMT targets size themselves in setup()
+                **{
+                    f"esp32_{variant.removeprefix('ESP32').lower()}": "1000b"
+                    for variant in esp32_rmt.VARIANTS_NO_RMT
+                },
                 esp8266="1000b",
                 bk72xx="1000b",
                 ln882x="1000b",
                 rtl87xx="1000b",
                 rp2="1000b",
-            ): cv.validate_bytes,
+            ): cv.All(cv.validate_bytes, cv.int_range(min=64)),
             cv.Optional(CONF_FILTER, default="50us"): cv.All(
                 cv.positive_time_period_microseconds,
                 cv.Range(max=TimePeriod(microseconds=4294967295)),
@@ -221,11 +224,11 @@ async def to_code(config: ConfigType) -> None:
 
     dumpers = await remote_base.build_dumpers(config[CONF_DUMP])
     for dumper in dumpers:
-        cg.add(var.register_dumper(dumper))
+        remote_base.add_dumper(var, dumper)
 
     triggers = await remote_base.build_triggers(config)
     for trigger in triggers:
-        cg.add(var.register_listener(trigger))
+        remote_base.add_listener(var, trigger)
     await cg.register_component(var, config)
 
     cg.add(
@@ -233,7 +236,8 @@ async def to_code(config: ConfigType) -> None:
             config[CONF_TOLERANCE][CONF_VALUE], config[CONF_TOLERANCE][CONF_TYPE]
         )
     )
-    cg.add(var.set_buffer_size(config[CONF_BUFFER_SIZE]))
+    if CONF_BUFFER_SIZE in config:
+        cg.add(var.set_buffer_size(config[CONF_BUFFER_SIZE]))
     cg.add(var.set_filter_us(config[CONF_FILTER]))
     cg.add(var.set_idle_us(config[CONF_IDLE]))
 

esphome/components/remote_receiver/remote_receiver.h

@@ -47,7 +47,7 @@ struct RemoteReceiverComponentStore {
   /// The position last read from
   volatile uint32_t buffer_read{0};
   bool overflow{false};
-  uint32_t buffer_size{1000};
+  uint32_t buffer_size{0};
   uint32_t receive_size{0};
   uint32_t filter_symbols{0};
   esp_err_t error{ESP_OK};
@@ -101,7 +101,7 @@ class RemoteReceiverComponent final : public remote_base::RemoteReceiverBase,
   HighFrequencyLoopRequester high_freq_;
 #endif
 
-  uint32_t buffer_size_{};
+  uint32_t buffer_size_{};  // 0 on RMT targets: sized from receive_symbols in setup()
   uint32_t filter_us_{10};
   uint32_t idle_us_{10000};
 };

esphome/components/remote_receiver/remote_receiver_rmt.cpp

@@ -10,6 +10,7 @@
 namespace esphome::remote_receiver {
 
 static const char *const TAG = "remote_receiver";
+static constexpr uint32_t DEFAULT_BUFFER_SLOTS = 4;
 
 static bool IRAM_ATTR HOT rmt_callback(rmt_channel_handle_t channel, const rmt_rx_done_event_data_t *event, void *arg) {
   RemoteReceiverComponentStore *store = (RemoteReceiverComponentStore *) arg;
@@ -104,7 +105,11 @@ void RemoteReceiverComponent::setup() {
   this->store_.config.signal_range_max_ns = this->idle_us_ * 1000;
   this->store_.filter_symbols = this->filter_symbols_;
   this->store_.receive_size = this->receive_symbols_ * sizeof(rmt_symbol_word_t);
-  this->store_.buffer_size = std::max((event_size + this->store_.receive_size) * 2, this->buffer_size_);
+  // one slot per pending rmt_receive; two are the floor (one filling while one is decoded), and
+  // the default of four covers a few frames queued across a stalled loop pass
+  const uint32_t slot_size = event_size + this->store_.receive_size;
+  this->store_.buffer_size =
+      this->buffer_size_ != 0 ? std::max(slot_size * 2, this->buffer_size_) : slot_size * DEFAULT_BUFFER_SLOTS;
   this->store_.buffer = new uint8_t[this->store_.buffer_size];
   error = rmt_receive(this->channel_, (uint8_t *) this->store_.buffer + event_size, this->store_.receive_size,
                       &this->store_.config);
@@ -117,20 +122,23 @@ void RemoteReceiverComponent::setup() {
 }
 
 void RemoteReceiverComponent::dump_config() {
-  ESP_LOGCONFIG(TAG,
-                "Remote Receiver:\n"
-                "  Clock resolution: %" PRIu32 " hz\n"
-                "  RMT symbols: %" PRIu32 "\n"
-                "  Filter symbols: %" PRIu32 "\n"
-                "  Receive symbols: %" PRIu32 "\n"
-                "  Tolerance: %" PRIu32 "%s\n"
-                "  Carrier frequency: %" PRIu32 " hz\n"
-                "  Carrier duty: %u%%\n"
-                "  Filter out pulses shorter than: %" PRIu32 " us\n"
-                "  Signal is done after %" PRIu32 " us of no changes",
-                this->clock_resolution_, this->rmt_symbols_, this->filter_symbols_, this->receive_symbols_,
-                this->tolerance_, (this->tolerance_mode_ == remote_base::TOLERANCE_MODE_TIME) ? " us" : "%",
-                this->carrier_frequency_, this->carrier_duty_percent_, this->filter_us_, this->idle_us_);
+  ESP_LOGCONFIG(
+      TAG,
+      "Remote Receiver:\n"
+      "  Clock resolution: %" PRIu32 " hz\n"
+      "  RMT symbols: %" PRIu32 "\n"
+      "  Filter symbols: %" PRIu32 "\n"
+      "  Receive symbols: %" PRIu32 "\n"
+      "  Buffer size: %" PRIu32 " bytes\n"
+      "  Tolerance: %" PRIu32 "%s\n"
+      "  Carrier frequency: %" PRIu32 " hz\n"
+      "  Carrier duty: %u%%\n"
+      "  Filter out pulses shorter than: %" PRIu32 " us\n"
+      "  Signal is done after %" PRIu32 " us of no changes",
+      this->clock_resolution_, this->rmt_symbols_, this->filter_symbols_, this->receive_symbols_,
+      this->store_.buffer_size, this->tolerance_,
+      (this->tolerance_mode_ == remote_base::TOLERANCE_MODE_TIME) ? LOG_STR_LITERAL(" us") : LOG_STR_LITERAL("%"),
+      this->carrier_frequency_, this->carrier_duty_percent_, this->filter_us_, this->idle_us_);
   LOG_PIN("  Pin: ", this->pin_);
   if (this->is_failed()) {
     ESP_LOGE(TAG, "Configuring RMT driver failed: %s (%s)", esp_err_to_name(this->error_code_),

esphome/components/sendspin/__init__.py

@@ -3,6 +3,7 @@ from dataclasses import dataclass, field
 from esphome import automation
 import esphome.codegen as cg
 from esphome.components import esp32, network, psram, socket, wifi
+from esphome.components.const import CONF_MANUFACTURER
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_BUFFER_SIZE,
@@ -33,7 +34,6 @@ CONF_DISPLAY_OFFSET = "display_offset"
 CONF_SENDSPIN_ID = "sendspin_id"
 
 CONF_FIRMWARE_VERSION = "firmware_version"
-CONF_MANUFACTURER = "manufacturer"
 
 # An empty device information string would be sent to the server as an empty value rather than
 # falling back, so reject it instead of silently substituting the fallback. The 127 byte cap keeps

esphome/components/template/datetime/template_time.h

@@ -15,6 +15,8 @@ namespace esphome::template_ {
 
 class TemplateTime final : public datetime::TimeEntity, public PollingComponent {
  public:
+  // User provided, not "= default": `new(p) TemplateTime()` would zero-fill .bss that is already zero.
+  TemplateTime() {}
   template<typename F> void set_template(F &&f) { this->f_.set(std::forward<F>(f)); }
 
   void setup() override;

esphome/components/toshiba/climate.py

@@ -1,5 +1,5 @@
 import esphome.codegen as cg
-from esphome.components import climate_ir
+from esphome.components import climate_ir, remote_base
 import esphome.config_validation as cv
 from esphome.const import CONF_MODEL
 from esphome.types import ConfigType
@@ -26,5 +26,6 @@ CONFIG_SCHEMA = climate_ir.climate_ir_with_receiver_schema(ToshibaClimate).exten
 
 
 async def to_code(config: ConfigType) -> None:
+    remote_base.request_protocol("toshiba_ac")  # used from C++
     var = await climate_ir.new_climate_ir(config)
     cg.add(var.set_model(config[CONF_MODEL]))

esphome/components/uart/uart_component_esp_idf.cpp

@@ -160,6 +160,7 @@ void IDFUARTComponent::load_settings(bool dump_config) {
     this->mark_failed();
     return;
   }
+  this->last_good_framing_ = this->framing_();
 
   int8_t tx = this->tx_pin_ != nullptr ? this->tx_pin_->get_pin() : -1;
   int8_t rx = this->rx_pin_ != nullptr ? this->rx_pin_->get_pin() : -1;
@@ -189,18 +190,9 @@ void IDFUARTComponent::load_settings(bool dump_config) {
     setup_pin_if_needed(this->tx_pin_);
   }
 
-  uint32_t invert = 0;
-  if (this->tx_pin_ != nullptr && this->tx_pin_->is_inverted()) {
-    invert |= UART_SIGNAL_TXD_INV;
-  }
-  if (this->rx_pin_ != nullptr && this->rx_pin_->is_inverted()) {
-    invert |= UART_SIGNAL_RXD_INV;
-  }
-  if (this->flow_control_pin_ != nullptr && this->flow_control_pin_->is_inverted()) {
-    invert |= UART_SIGNAL_RTS_INV;
-  }
-
-  err = uart_set_line_inverse(this->uart_num_, invert);
+  // Must precede uart_set_pin() so an inverted TX line never shows the wrong idle
+  // level; apply_line_settings_() repeats it later for the reset registers.
+  err = uart_set_line_inverse(this->uart_num_, this->line_inversion_mask_());
   if (err != ESP_OK) {
     ESP_LOGW(TAG, "uart_set_line_inverse failed: %s", esp_err_to_name(err));
     this->mark_failed();
@@ -214,25 +206,7 @@ void IDFUARTComponent::load_settings(bool dump_config) {
     return;
   }
 
-  err = uart_set_rx_full_threshold(this->uart_num_, this->rx_full_threshold_);
-  if (err != ESP_OK) {
-    ESP_LOGW(TAG, "uart_set_rx_full_threshold failed: %s", esp_err_to_name(err));
-    this->mark_failed();
-    return;
-  }
-
-  err = uart_set_rx_timeout(this->uart_num_, this->rx_timeout_);
-  if (err != ESP_OK) {
-    ESP_LOGW(TAG, "uart_set_rx_timeout failed: %s", esp_err_to_name(err));
-    this->mark_failed();
-    return;
-  }
-
-  // Per ESP-IDF docs, uart_set_mode() must be called only after uart_driver_install().
-  auto mode = this->flow_control_pin_ != nullptr ? UART_MODE_RS485_HALF_DUPLEX : UART_MODE_UART;
-  err = uart_set_mode(this->uart_num_, mode);
-  if (err != ESP_OK) {
-    ESP_LOGW(TAG, "uart_set_mode failed: %s", esp_err_to_name(err));
+  if (this->apply_line_settings_() != ESP_OK) {
     this->mark_failed();
     return;
   }
@@ -250,6 +224,99 @@ void IDFUARTComponent::load_settings(bool dump_config) {
   }
 }
 
+uint32_t IDFUARTComponent::line_inversion_mask_() {
+  uint32_t invert = 0;
+  if (this->tx_pin_ != nullptr && this->tx_pin_->is_inverted()) {
+    invert |= UART_SIGNAL_TXD_INV;
+  }
+  if (this->rx_pin_ != nullptr && this->rx_pin_->is_inverted()) {
+    invert |= UART_SIGNAL_RXD_INV;
+  }
+  if (this->flow_control_pin_ != nullptr && this->flow_control_pin_->is_inverted()) {
+    invert |= UART_SIGNAL_RTS_INV;
+  }
+  return invert;
+}
+
+esp_err_t IDFUARTComponent::apply_line_settings_() {
+  // uart_param_config() resets these; call after every use of it.
+  esp_err_t err = uart_set_line_inverse(this->uart_num_, this->line_inversion_mask_());
+  if (err != ESP_OK) {
+    ESP_LOGW(TAG, "uart_set_line_inverse failed: %s", esp_err_to_name(err));
+    return err;
+  }
+
+  err = uart_set_rx_full_threshold(this->uart_num_, this->rx_full_threshold_);
+  if (err != ESP_OK) {
+    ESP_LOGW(TAG, "uart_set_rx_full_threshold failed: %s", esp_err_to_name(err));
+    return err;
+  }
+
+  err = uart_set_rx_timeout(this->uart_num_, this->rx_timeout_);
+  if (err != ESP_OK) {
+    ESP_LOGW(TAG, "uart_set_rx_timeout failed: %s", esp_err_to_name(err));
+    return err;
+  }
+
+  // Per ESP-IDF docs, uart_set_mode() must be called only after uart_driver_install().
+  auto mode = this->flow_control_pin_ != nullptr ? UART_MODE_RS485_HALF_DUPLEX : UART_MODE_UART;
+  err = uart_set_mode(this->uart_num_, mode);
+  if (err != ESP_OK) {
+    ESP_LOGW(TAG, "uart_set_mode failed: %s", esp_err_to_name(err));
+    return err;
+  }
+
+  return ESP_OK;
+}
+
+void IDFUARTComponent::set_framing_(const Framing &framing) {
+  this->baud_rate_ = framing.baud_rate;
+  this->data_bits_ = framing.data_bits;
+  this->stop_bits_ = framing.stop_bits;
+  this->parity_ = framing.parity;
+  this->rx_full_threshold_ = framing.rx_full_threshold;
+}
+
+esp_err_t IDFUARTComponent::apply_settings_live() {
+  if (this->is_failed()) {
+    return ESP_ERR_INVALID_STATE;
+  }
+  // No driver yet: nothing to reconfigure in place.
+  if (!uart_is_driver_installed(this->uart_num_)) {
+    this->load_settings(false);
+    return this->is_failed() ? ESP_FAIL : ESP_OK;
+  }
+  // Keeps the driver ring buffers; flushes both hardware FIFOs (in-flight bytes lost).
+  uart_config_t uart_config = this->get_config_();
+  esp_err_t err = uart_param_config(this->uart_num_, &uart_config);
+  if (err != ESP_OK) {
+    // Failure leaves the registers reset; put back the last accepted framing so the
+    // getters still describe the hardware.
+    if (this->last_good_framing_.baud_rate == 0) {
+      ESP_LOGE(TAG, "uart_param_config (live) failed: %s; no previous framing to restore", esp_err_to_name(err));
+      this->mark_failed();
+      return err;
+    }
+    ESP_LOGW(TAG, "uart_param_config (live) failed: %s; restoring %" PRIu32 " baud", esp_err_to_name(err),
+             this->last_good_framing_.baud_rate);
+    this->set_framing_(this->last_good_framing_);
+    uart_config = this->get_config_();
+    esp_err_t restore_err = uart_param_config(this->uart_num_, &uart_config);
+    if (restore_err != ESP_OK) {
+      ESP_LOGE(TAG, "UART left unconfigured after failed live reconfigure: %s", esp_err_to_name(restore_err));
+      this->mark_failed();
+      return err;
+    }
+    // Previous framing is live again; report the refusal (line-setting errors log).
+    this->apply_line_settings_();
+    return err;
+  }
+  this->last_good_framing_ = this->framing_();
+  // The new framing is live; a line-setting failure here only logs.
+  this->apply_line_settings_();
+  return ESP_OK;
+}
+
 void IDFUARTComponent::dump_config() {
   ESP_LOGCONFIG(TAG, "UART Bus %u:", this->uart_num_);
   LOG_PIN("  TX Pin: ", this->tx_pin_);

esphome/components/uart/uart_component_esp_idf.h

@@ -52,13 +52,49 @@ class IDFUARTComponent final : public UARTComponent, public Component {
   void load_settings(bool dump_config) override;
   using UARTComponent::load_settings;  // also bring in the no-arg overload for convenience
 
+  /**
+   * Apply the current framing (baud rate, parity, data/stop bits) to the installed
+   * driver in place, without the delete/reinstall of load_settings(). Tasks blocked in
+   * the driver survive and the ring buffers are kept, but both hardware FIFOs are
+   * flushed: a frame in flight reaches the peer truncated and bytes not yet out of the
+   * RX FIFO are dropped. No lock is taken: quiesce writers first if that matters.
+   * rx_full_threshold is not rescaled (call set_rx_full_threshold_ms() first if it
+   * should follow the baud rate); a rollback restores the value from the last accepted
+   * configuration, undoing a standalone set_rx_full_threshold() made since. Without an
+   * installed driver this is a full load_settings(false) instead.
+   *
+   * @return ESP_OK once the new framing is live (a line-setting error after that only
+   * logs). On rejection (unreachable baud rate) the previous framing is restored and
+   * the driver's error returned; if the restore fails too the component is marked
+   * failed. ESP_ERR_INVALID_STATE if already failed; ESP_FAIL if the fallback
+   * load_settings() fails.
+   */
+  esp_err_t apply_settings_live();
+
   void on_shutdown() override;
 
  protected:
   void check_logger_conflict() override;
+  uint32_t line_inversion_mask_();
+  // Re-applies what uart_param_config() resets: inversion, RX threshold/timeout, mode.
+  esp_err_t apply_line_settings_();
   uart_port_t uart_num_{UART_NUM_MAX};
   uart_config_t get_config_();
 
+  struct Framing {
+    uint32_t baud_rate;
+    uint8_t data_bits;
+    uint8_t stop_bits;
+    UARTParityOptions parity;
+    size_t rx_full_threshold;  // sized for the baud rate, so rolled back with it
+  };
+  Framing framing_() const {
+    return {this->baud_rate_, this->data_bits_, this->stop_bits_, this->parity_, this->rx_full_threshold_};
+  }
+  void set_framing_(const Framing &framing);
+  // Last framing the driver accepted; baud_rate 0 means none yet.
+  Framing last_good_framing_{};
+
   bool has_peek_{false};
   uint8_t peek_byte_;
   uint32_t flush_timeout_ms_{0};  ///< 0 means wait indefinitely (portMAX_DELAY).

esphome/components/wifi/__init__.py

@@ -12,6 +12,7 @@ from esphome.components.esp32 import (
     get_esp32_variant,
     only_on_variant,
     request_wifi,
+    require_mbedtls_tls_extras,
 )
 from esphome.components.network import (
     add_use_address,
@@ -658,6 +659,12 @@ async def to_code(config):
     # Disable Enterprise WiFi support if no EAP is configured
     if CORE.is_esp32:
         add_idf_sdkconfig_option("CONFIG_ESP_WIFI_ENTERPRISE_SUPPORT", has_eap)
+        if has_eap:
+            # wpa_supplicant's EAP client negotiates with whatever the RADIUS
+            # server offers, and a failed handshake leaves the device off the
+            # network, so keep every mbedTLS client feature the esp32 platform
+            # would otherwise trim.
+            require_mbedtls_tls_extras()
 
     # Only define USE_WIFI_MANUAL_IP if any AP uses manual IP
     if has_manual_ip:

esphome/core/defines.h

@@ -137,6 +137,43 @@
 #define MICRONOVA_LISTENER_COUNT 1
 #define USE_MICRONOVA_WRITER
 #define MK2PVROUTER_LISTENER_COUNT 1
+#define REMOTE_BASE_DUMPER_COUNT 1
+#define REMOTE_BASE_LISTENER_COUNT 1
+#define USE_REMOTE_PROTOCOL_ABBWELCOME
+#define USE_REMOTE_PROTOCOL_AEHA
+#define USE_REMOTE_PROTOCOL_BEO4
+#define USE_REMOTE_PROTOCOL_BRENNENSTUHL
+#define USE_REMOTE_PROTOCOL_BYRONSX
+#define USE_REMOTE_PROTOCOL_CANALSAT
+#define USE_REMOTE_PROTOCOL_COOLIX
+#define USE_REMOTE_PROTOCOL_DISH
+#define USE_REMOTE_PROTOCOL_DOOYA
+#define USE_REMOTE_PROTOCOL_DRAYTON
+#define USE_REMOTE_PROTOCOL_DYSON
+#define USE_REMOTE_PROTOCOL_GOBOX
+#define USE_REMOTE_PROTOCOL_HAIER
+#define USE_REMOTE_PROTOCOL_JVC
+#define USE_REMOTE_PROTOCOL_KEELOQ
+#define USE_REMOTE_PROTOCOL_LG
+#define USE_REMOTE_PROTOCOL_MAGIQUEST
+#define USE_REMOTE_PROTOCOL_MIDEA
+#define USE_REMOTE_PROTOCOL_MIRAGE
+#define USE_REMOTE_PROTOCOL_NEC
+#define USE_REMOTE_PROTOCOL_NEXA
+#define USE_REMOTE_PROTOCOL_PANASONIC
+#define USE_REMOTE_PROTOCOL_PIONEER
+#define USE_REMOTE_PROTOCOL_PRONTO
+#define USE_REMOTE_PROTOCOL_RAW
+#define USE_REMOTE_PROTOCOL_RC5
+#define USE_REMOTE_PROTOCOL_RC6
+#define USE_REMOTE_PROTOCOL_RC_SWITCH
+#define USE_REMOTE_PROTOCOL_ROOMBA
+#define USE_REMOTE_PROTOCOL_SAMSUNG
+#define USE_REMOTE_PROTOCOL_SAMSUNG36
+#define USE_REMOTE_PROTOCOL_SONY
+#define USE_REMOTE_PROTOCOL_SYMPHONY
+#define USE_REMOTE_PROTOCOL_TOSHIBA_AC
+#define USE_REMOTE_PROTOCOL_TOTO
 #define SERIAL_PROXY_COUNT 2
 #define SNTP_SERVER_COUNT 3
 #define USE_MEDIA_PLAYER
@@ -298,6 +335,7 @@
 // ESP32-specific feature flags
 #ifdef USE_ESP32
 #define USE_ESP32_CRASH_HANDLER
+#define USE_ESP32_VASPRINTF_STUB
 #define USE_ESP32_INTERNAL_GPIO
 #define USE_MQTT_IDF_ENQUEUE
 #define USE_ESPHOME_TASK_LOG_BUFFER

esphome/core/entity_base.cpp

@@ -56,6 +56,15 @@ void EntityBase::configure_entity_(const char *name, uint32_t object_id_hash, ui
   this->flags_.entity_category = (entity_fields >> ENTITY_FIELD_ENTITY_CATEGORY_SHIFT) & 0x3;
 }
 
+void EntityBase::set_internal(bool internal) {
+  // Remove the after-setup path in 2027.3.0 and ignore the call instead.
+  if (App.is_setup_complete()) {
+    ESP_LOGE(TAG, "'%s': set_internal() after setup is undefined behavior, stops working in 2027.3.0",
+             this->get_name().c_str());
+  }
+  this->flags_.internal = internal;
+}
+
 // Weak default lookup functions — overridden by generated code in main.cpp
 __attribute__((weak)) const char *entity_device_class_lookup(uint8_t) { return ""; }
 __attribute__((weak)) const char *entity_uom_lookup(uint8_t) { return ""; }

esphome/core/entity_base.h

@@ -88,13 +88,26 @@ class EntityBase {
   // Get whether this Entity should be hidden outside ESPHome
   bool is_internal() const { return this->flags_.internal; }
 
-  // Deprecated: Calling set_internal() at runtime is undefined behavior. Components and clients
-  // are NOT notified of the change, the flag may have already been read during setup, and there
-  // is NO guarantee any consumer will observe the new value. Use the 'internal:' YAML key instead.
-  ESPDEPRECATED("set_internal() is undefined behavior at runtime — components and Home Assistant are NOT "
-                "notified. Use the 'internal:' YAML key instead. Will be removed in 2027.3.0.",
-                "2026.3.0")
-  void set_internal(bool internal) { this->flags_.internal = internal; }
+  // Set whether this Entity should be hidden outside ESPHome. Prefer the 'internal:' YAML key
+  // whenever possible: it is guaranteed and has none of the limitations below. Use this only when
+  // the decision can only be made at boot. Must be called before MQTT and the API read the flag:
+  // from on_boot at the default priority, or a setup() that runs above setup_priority::AFTER_WIFI.
+  // If the answer comes from a device handshake, hold setup with can_proceed() until it arrives.
+  // Calls after setup finishes are undefined behavior: the flag is still written and an error is
+  // logged, and from 2027.3.0 the call will be ignored.
+  //
+  // Known limitations. Not bugs, so no issue reports please; a PR that removes one with no RAM
+  // or performance cost would be considered.
+  // - No consumer is notified of a change, so the flag can only be decided once per boot.
+  // - The guard is coarse: a call from a priority below AFTER_WIFI (an on_boot with a low priority,
+  //   or a setup() at LATE) still passes, but the API camera listener is already registered, MQTT
+  //   (AFTER_CONNECTION) has cached the flag, and an API client that connected while setup was
+  //   stalled on a slow component has already listed the entities, so they keep the old value.
+  // - Un-hiding an entity declared 'internal: true' in YAML skips the duplicate name check that
+  //   codegen runs for exposed entities, so a name collision can surface at runtime. Entities with
+  //   only an 'id:' are forced internal and use the id as their name.
+  // - Zigbee codegen skips YAML internal entities entirely, so un-hiding cannot add them to Zigbee.
+  void set_internal(bool internal);
 
   // Check if this object is declared to be disabled by default.
   // That means that when the device gets added to Home Assistant (or other clients) it should

esphome/cpp_generator.py

@@ -1187,3 +1187,42 @@ class MockObjClass(MockObj):
 
     def __repr__(self):
         return f"MockObjClass<{str(self.base)}, parents={self._parents}>"
+
+
+class StaticCastExpression(Expression):
+    __slots__ = ("type", "exp")
+
+    def __init__(self, type: Any, exp: SafeExpType):
+        self.type = str(type)
+        self.exp = safe_exp(exp)
+
+    def __str__(self):
+        return f"static_cast<{self.type}>({self.exp})"
+
+
+def call_lambda(lamb: LambdaExpression) -> Expression:
+    """
+    Given a lambda, either reduce to a simple expression or call it, possibly with parameters
+    from the surrounding context.
+    This is for use only with value-returning lambdas, used in places where the value of a lambda call is needed.
+    :param lamb: The LambdaExpression to call or reduce
+    :return: An Expression representing the result of calling the lambda or reducing it to a simple expression
+    """
+    # Developer error if this is called with a lambda that doesn't have a return type
+    assert lamb.return_type is not None, "Lambda must have a return type to be called"
+    expr = lamb.content.strip()
+    if re.match(r"^return\b", expr) and expr.endswith(";"):
+        # Convert a lambda returning a simple expression to just that expression
+        expr = RawExpression(expr[6:-1].strip())
+        # Don't cast if the return type is a class
+        if isinstance(lamb.return_type, MockObjClass):
+            return expr
+        return StaticCastExpression(lamb.return_type, expr)
+    # If lambda has parameters, call it with their names
+    # Parameter names come from hardcoded component code (like "x", "it", "event")
+    # not from user input, so they're safe to use directly
+    if lamb.parameters and lamb.parameters.parameters:
+        return CallExpression(
+            lamb, *[MockObj(x.id) for x in lamb.parameters.parameters]
+        )
+    return CallExpression(lamb)

esphome/cpp_helpers.py

@@ -1,4 +1,4 @@
-from collections.abc import Callable
+from collections.abc import Callable, Hashable
 from dataclasses import dataclass, field
 import logging
 
@@ -142,9 +142,10 @@ _SLOT_COUNTER_DOMAIN = "slot_counter"
 
 @dataclass
 class _SlotCounterState:
-    """Per-run slot counter state: requested counts and already-emitted defines."""
+    """Per-run slot counter state: requested counts per define and key, and
+    already-emitted defines."""
 
-    counts: dict[str, int] = field(default_factory=dict)
+    counts: dict[str, dict[Hashable, int]] = field(default_factory=dict)
     emitted: set[str] = field(default_factory=set)
 
 
@@ -156,11 +157,13 @@ def _get_slot_counter_state() -> _SlotCounterState:
 
 
 def get_slot_count(define: str) -> int:
-    """Number of slots requested so far for `define`."""
-    return _get_slot_counter_state().counts.get(define, 0)
+    """Value `define` would be emitted with so far: the largest count requested
+    under any one key, which is the plain request count when no key is used."""
+    counts = _get_slot_counter_state().counts.get(define)
+    return max(counts.values()) if counts else 0
 
 
-def slot_counter(define: str) -> Callable[[], None]:
+def slot_counter(define: str) -> Callable[..., None]:
     """Create a request_slot function for codegen-sized storage.
 
     The pattern behind a StaticVector listener array: a consumer's to_code
@@ -169,6 +172,11 @@ def slot_counter(define: str) -> Callable[[], None]:
     emitted with the requested count. No requests, no define: the guarded
     storage and its registration method compile out entirely.
 
+    When several objects each declare the storage at the same size (one list
+    per receiver, per hub, ...) the caller passes the owning object as `key`
+    and the define becomes the largest count any one key requested, not the
+    total. Requests without a key share one count.
+
     The counts live in a table under CORE.data, which clears between runs.
     A request arriving after the define was already emitted raises instead of
     silently undercounting: the define would keep the stale smaller value and
@@ -179,10 +187,10 @@ def slot_counter(define: str) -> Callable[[], None]:
     async def emit_job() -> None:
         state = _get_slot_counter_state()
         state.emitted.add(define)
-        # Scheduled only by the first request, so the count is always >= 1 here.
-        add_define(define, state.counts[define])
+        # Scheduled only by the first request, so there is at least one count here.
+        add_define(define, max(state.counts[define].values()))
 
-    def request_slot() -> None:
+    def request_slot(key: Hashable = None) -> None:
         state = _get_slot_counter_state()
         if define in state.emitted:
             raise ValueError(
@@ -190,10 +198,16 @@ def slot_counter(define: str) -> Callable[[], None]:
                 f"define was emitted; request slots from to_code, not from a "
                 f"job running after FINAL emission"
             )
-        counts = state.counts
-        counts[define] = (count := counts.get(define, 0) + 1)
-        if count == 1:
+        counts = state.counts.get(define)
+        if counts is None:
+            counts = state.counts[define] = {}
             CORE.add_job(emit_job)
+        elif (key is None) != (None in counts):
+            # a keyed and an unkeyed request would compare buckets instead of adding up
+            raise ValueError(
+                f"slot_counter('{define}'): every request must use a key, or none of them"
+            )
+        counts[key] = counts.get(key, 0) + 1
 
     return request_slot
 

requirements.txt

@@ -12,7 +12,7 @@ pyserial==3.5
 platformio==6.1.19
 esptool==5.4.0
 click==8.3.3
-aioesphomeapi==46.4.0
+aioesphomeapi==46.4.1
 aiohappyeyeballs==2.7.1  # Happy Eyeballs for requests downloads; already pulled in by aioesphomeapi
 zeroconf==0.151.3
 puremagic==2.2.0

tests/component_tests/esp32/config/mbedtls_tls_default.yaml

@@ -0,0 +1,14 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+  framework:
+    type: esp-idf
+
+wifi:
+  ssid: "test_ssid"
+  password: "test_password"
+
+http_request:
+  verify_ssl: true

tests/component_tests/esp32/config/mbedtls_tls_openthread.yaml

@@ -0,0 +1,19 @@
+esphome:
+  name: test
+
+esp32:
+  variant: esp32c6
+  framework:
+    type: esp-idf
+
+network:
+  enable_ipv6: true
+
+openthread:
+  channel: 13
+  network_name: OpenThread-8f28
+  network_key: 0xdfd34f0f05cad978ec4e32b0413038ff
+  pan_id: 0x8f28
+  ext_pan_id: 0xd63e8e3e495ebbc3
+  pskc: 0xc23a76e98f1a6483639b1ac1271e2e27
+  mesh_local_prefix: fd53:145f:ed22:ad81::/64

tests/component_tests/esp32/config/mbedtls_tls_opt_out.yaml

@@ -0,0 +1,17 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+  framework:
+    type: esp-idf
+    advanced:
+      disable_mbedtls_tls_server: false
+      disable_mbedtls_tls_extras: false
+
+wifi:
+  ssid: "test_ssid"
+  password: "test_password"
+
+http_request:
+  verify_ssl: true

tests/component_tests/esp32/config/mbedtls_tls_user_sdkconfig.yaml

@@ -0,0 +1,17 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+  framework:
+    type: esp-idf
+    sdkconfig_options:
+      CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT: y
+      CONFIG_MBEDTLS_CCM_C: y
+
+wifi:
+  ssid: "test_ssid"
+  password: "test_password"
+
+http_request:
+  verify_ssl: true

tests/component_tests/esp32/config/mbedtls_tls_wifi_eap.yaml

@@ -0,0 +1,17 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+  framework:
+    type: esp-idf
+
+wifi:
+  ssid: "test_ssid"
+  eap:
+    identity: "user@example.org"
+    username: "user"
+    password: "secret"
+
+http_request:
+  verify_ssl: true

tests/component_tests/esp32/config/vasprintf_stub_c6.yaml

@@ -0,0 +1,7 @@
+esphome:
+  name: test
+
+esp32:
+  variant: esp32c6
+  framework:
+    type: esp-idf

tests/component_tests/esp32/config/vasprintf_stub_c6_full_printf.yaml

@@ -0,0 +1,9 @@
+esphome:
+  name: test
+
+esp32:
+  variant: esp32c6
+  framework:
+    type: esp-idf
+    advanced:
+      enable_full_printf: true

tests/component_tests/esp32/test_esp32.py

@@ -11,9 +11,12 @@ import pytest
 
 from esphome.components.esp32 import (
     KEY_FATFS_REQUIRED,
+    KEY_MBEDTLS_TLS_EXTRAS_REQUIRED,
+    KEY_MBEDTLS_TLS_SERVER_REQUIRED,
     KEY_VFS_DIR_REQUIRED,
     KEY_VFS_SELECT_REQUIRED,
     KEY_VFS_TERMIOS_REQUIRED,
+    MBEDTLS_TLS_EXTRA_OPTIONS,
     VARIANT_ESP32,
     VARIANTS,
     NetworkSdkconfigData,
@@ -1339,3 +1342,99 @@ def test_esp32_s31_gpio_validation(
     with caplog.at_level("WARNING"):
         validate_supports(pin)
     assert "GPIO36 is a strapping PIN" in caplog.text
+
+
+_TLS_SERVER_OPTIONS = (
+    "CONFIG_MBEDTLS_TLS_CLIENT_ONLY",
+    "CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT",
+)
+
+
+@pytest.mark.parametrize(
+    ("config_file", "server", "extras"),
+    [
+        pytest.param("mbedtls_tls_default.yaml", (True, False), False, id="default"),
+        pytest.param("mbedtls_tls_opt_out.yaml", (None, None), None, id="opt_out"),
+        pytest.param("mbedtls_tls_wifi_eap.yaml", (True, False), None, id="wifi_eap"),
+    ],
+)
+def test_mbedtls_tls_trim_sdkconfig(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+    config_file: str,
+    server: tuple[bool | None, bool | None],
+    extras: bool | None,
+) -> None:
+    """Client-only TLS and the unused-feature trims apply unless opted out or required."""
+    generate_main(component_config_path(config_file))
+    sdkconfig = CORE.data[KEY_ESP32][KEY_SDKCONFIG_OPTIONS]
+    assert tuple(sdkconfig.get(name) for name in _TLS_SERVER_OPTIONS) == server
+    assert {sdkconfig.get(name) for name in MBEDTLS_TLS_EXTRA_OPTIONS} == {extras}
+
+
+_OPENTHREAD_EXTRAS = {"CONFIG_MBEDTLS_CCM_C", "CONFIG_MBEDTLS_ECDSA_DETERMINISTIC"}
+
+
+def test_mbedtls_tls_openthread_keeps_only_what_it_uses(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    """The OpenThread config keeps the DTLS server, CCM and deterministic ECDSA; the rest is trimmed."""
+    generate_main(component_config_path("mbedtls_tls_openthread.yaml"))
+    sdkconfig = CORE.data[KEY_ESP32][KEY_SDKCONFIG_OPTIONS]
+    assert tuple(sdkconfig.get(name) for name in _TLS_SERVER_OPTIONS) == (None, None)
+    for name in MBEDTLS_TLS_EXTRA_OPTIONS:
+        assert sdkconfig.get(name) is (None if name in _OPENTHREAD_EXTRAS else False)
+
+
+def test_mbedtls_tls_user_sdkconfig_wins(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    """A user-set TLS role member leaves the whole choice alone; other user values are kept."""
+    generate_main(component_config_path("mbedtls_tls_user_sdkconfig.yaml"))
+    sdkconfig = CORE.data[KEY_ESP32][KEY_SDKCONFIG_OPTIONS]
+    assert sdkconfig.get("CONFIG_MBEDTLS_TLS_CLIENT_ONLY") is None
+    role = sdkconfig["CONFIG_MBEDTLS_TLS_SERVER_AND_CLIENT"]
+    assert isinstance(role, RawSdkconfigValue) and role.value == "y"
+    ccm = sdkconfig["CONFIG_MBEDTLS_CCM_C"]
+    assert isinstance(ccm, RawSdkconfigValue) and ccm.value == "y"
+    assert {
+        sdkconfig.get(name)
+        for name in MBEDTLS_TLS_EXTRA_OPTIONS
+        if name != "CONFIG_MBEDTLS_CCM_C"
+    } == {False}
+
+
+def test_mbedtls_tls_openthread_requires_server_and_extras(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    """The OpenThread hooks mark the DTLS server and CCM/deterministic ECDSA as required."""
+    generate_main(component_config_path("mbedtls_tls_openthread.yaml"))
+    assert CORE.data[KEY_ESP32][KEY_MBEDTLS_TLS_SERVER_REQUIRED] is True
+    assert CORE.data[KEY_ESP32][KEY_MBEDTLS_TLS_EXTRAS_REQUIRED] == _OPENTHREAD_EXTRAS
+
+
+_VASPRINTF_STUB_FLAGS = {"-Wl,--wrap=vasprintf", "-Wl,--undefined=__wrap_vasprintf"}
+
+
+@pytest.mark.parametrize(
+    ("config_file", "expected"),
+    [
+        pytest.param("vasprintf_stub_c6.yaml", True, id="c6"),
+        pytest.param("vasprintf_stub_c6_full_printf.yaml", False, id="c6_full_printf"),
+        pytest.param("exclusion_reincludes.yaml", False, id="esp32"),
+    ],
+)
+def test_vasprintf_stub_only_on_rom_vsnprintf_variants(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+    config_file: str,
+    expected: bool,
+) -> None:
+    """The vasprintf wrap is emitted only where the ROM lacks vasprintf but has vsnprintf."""
+    generate_main(component_config_path(config_file))
+    assert (CORE.build_flags >= _VASPRINTF_STUB_FLAGS) is expected
+    defines = {define.name for define in CORE.defines}
+    assert ("USE_ESP32_VASPRINTF_STUB" in defines) is expected

tests/component_tests/remote_receiver/config/receiver_bare.yaml

@@ -0,0 +1,9 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+
+remote_receiver:
+  - id: rcvr
+    pin: GPIO4

tests/component_tests/remote_receiver/config/receiver_buffer_size.yaml

@@ -0,0 +1,10 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+
+remote_receiver:
+  - id: rcvr
+    pin: GPIO4
+    buffer_size: 2kb

tests/component_tests/remote_receiver/config/receiver_esp32_c2.yaml

@@ -0,0 +1,12 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32-c2-devkitm-1
+  variant: esp32c2
+  framework:
+    type: esp-idf
+
+remote_receiver:
+  - id: rcvr
+    pin: GPIO4

tests/component_tests/remote_receiver/config/receiver_esp8266.yaml

@@ -0,0 +1,9 @@
+esphome:
+  name: test
+
+esp8266:
+  board: d1_mini
+
+remote_receiver:
+  - id: rcvr
+    pin: GPIO4

tests/component_tests/remote_receiver/config/receiver_with_dumpers.yaml

@@ -0,0 +1,24 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+
+logger:
+
+remote_receiver:
+  - id: rcvr
+    pin: GPIO4
+    dump:
+      - nec
+      - rc_switch
+    on_nec:
+      then:
+        - logger.log: nec
+
+binary_sensor:
+  - platform: remote_receiver
+    name: Remote Input
+    nec:
+      address: 0x1234
+      command: 0x5678

tests/component_tests/remote_receiver/config/receiver_with_proxies.yaml

@@ -0,0 +1,22 @@
+esphome:
+  name: test
+
+esp32:
+  board: esp32dev
+
+remote_receiver:
+  - id: rcvr_ir
+    pin: GPIO4
+  - id: rcvr_rf
+    pin: GPIO5
+
+infrared:
+  - platform: ir_rf_proxy
+    name: IR Receiver
+    remote_receiver_id: rcvr_ir
+
+radio_frequency:
+  - platform: ir_rf_proxy
+    name: RF Receiver
+    frequency: 433.92MHz
+    remote_receiver_id: rcvr_rf

tests/component_tests/remote_receiver/test_buffer_size.py

@@ -0,0 +1,28 @@
+"""buffer_size reaches the receiver when set, and always on the pulse ring targets."""
+
+from collections.abc import Callable
+from pathlib import Path
+
+
+def test_explicit_buffer_size_is_passed_through(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    main_cpp = generate_main(component_config_path("receiver_buffer_size.yaml"))
+    assert "rcvr->set_buffer_size(2000);" in main_cpp
+
+
+def test_pulse_ring_target_keeps_a_default(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    main_cpp = generate_main(component_config_path("receiver_esp8266.yaml"))
+    assert "rcvr->set_buffer_size(1000);" in main_cpp
+
+
+def test_esp32_variant_without_rmt_keeps_a_default(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    main_cpp = generate_main(component_config_path("receiver_esp32_c2.yaml"))
+    assert "rcvr->set_buffer_size(1000);" in main_cpp

tests/component_tests/remote_receiver/test_slot_counts.py

@@ -0,0 +1,93 @@
+"""Listener and dumper StaticVector sizes come from codegen slot counts."""
+
+from collections.abc import Callable
+from pathlib import Path
+
+import pytest
+
+from esphome.automation import ACTION_REGISTRY
+from esphome.components import remote_base
+import esphome.config_validation as cv
+
+from ..helpers import get_define_value
+
+
+def test_dumper_and_listener_counts(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    generate_main(component_config_path("receiver_with_dumpers.yaml"))
+    # nec and rc_switch dumpers
+    assert get_define_value("REMOTE_BASE_DUMPER_COUNT") == "2"
+    # on_nec trigger plus the remote_receiver binary sensor
+    assert get_define_value("REMOTE_BASE_LISTENER_COUNT") == "2"
+
+
+def test_bare_receiver_emits_no_counts(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    main_cpp = generate_main(component_config_path("receiver_bare.yaml"))
+    # the RMT ring is sized in setup() unless buffer_size is set
+    assert "set_buffer_size" not in main_cpp
+    assert get_define_value("REMOTE_BASE_DUMPER_COUNT") is None
+    assert get_define_value("REMOTE_BASE_LISTENER_COUNT") is None
+
+
+def test_proxy_receivers_count_as_listeners(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    generate_main(component_config_path("receiver_with_proxies.yaml"))
+    # one proxy entity listens on each of the two receivers; every receiver's list gets the
+    # capacity of the busiest one, so this is the largest per receiver count, not the sum
+    assert get_define_value("REMOTE_BASE_LISTENER_COUNT") == "1"
+    assert get_define_value("REMOTE_BASE_DUMPER_COUNT") is None
+
+
+def test_only_used_protocol_sources_are_compiled(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    generate_main(component_config_path("receiver_with_dumpers.yaml"))
+    excluded = set(remote_base.FILTER_SOURCE_FILES())
+    assert "nec_protocol.cpp" not in excluded
+    assert "rc_switch_protocol.cpp" not in excluded
+    assert "sony_protocol.cpp" in excluded
+    assert "remote_base.cpp" not in excluded
+
+
+def test_every_registry_name_maps_to_a_protocol_source() -> None:
+    """A registry name must resolve to a source file or request_protocol rejects it."""
+    names = (
+        set(remote_base.BINARY_SENSOR_REGISTRY)
+        | set(remote_base.DUMPER_REGISTRY)
+        | {key.removeprefix("on_") for key in remote_base.TRIGGER_REGISTRY}
+        | {
+            key.removeprefix("remote_transmitter.transmit_")
+            for key in ACTION_REGISTRY
+            if key.startswith("remote_transmitter.transmit_")
+        }
+    )
+    assert len(names) > 40
+    for name in names:
+        assert remote_base._protocol_stem(name) in remote_base._PROTOCOL_STEMS, name
+
+
+def test_request_protocol_rejects_unknown_names() -> None:
+    """A misspelled protocol would otherwise surface only as a link error."""
+    with pytest.raises(ValueError, match="Unknown remote protocol 'toshiba'"):
+        remote_base.request_protocol("toshiba")
+
+
+def test_dump_list_is_deduplicated_across_forms() -> None:
+    dumpers = remote_base.validate_dumpers(["raw", {"raw": None}, "nec", "nec"])
+    assert [
+        next(k for k in entry if k in remote_base.DUMPER_REGISTRY) for entry in dumpers
+    ] == ["raw", "nec"]
+
+
+@pytest.mark.parametrize("bad", [["nec", None], [5]])
+def test_dump_list_rejects_invalid_entries_with_a_validation_error(bad: list) -> None:
+    with pytest.raises(cv.Invalid):
+        remote_base.validate_dumpers(bad)

tests/component_tests/sendspin/test_device_info.py

@@ -8,11 +8,8 @@ from pathlib import Path
 import pytest
 
 from esphome import config_validation as cv
-from esphome.components.sendspin import (
-    CONF_FIRMWARE_VERSION,
-    CONF_MANUFACTURER,
-    CONFIG_SCHEMA,
-)
+from esphome.components.const import CONF_MANUFACTURER
+from esphome.components.sendspin import CONF_FIRMWARE_VERSION, CONFIG_SCHEMA
 from esphome.const import CONF_MODEL, PlatformFramework
 from tests.component_tests.types import SetCoreConfigCallable
 

tests/components/esp32/test.esp32-idf.yaml

@@ -17,6 +17,8 @@ esp32:
       disable_dev_null_vfs: true
       disable_mbedtls_peer_cert: true
       disable_mbedtls_pkcs7: true
+      disable_mbedtls_tls_server: true
+      disable_mbedtls_tls_extras: true
       disable_regi2c_in_iram: true
       disable_fatfs: true
       sram1_as_iram: true

tests/components/http_request/test.esp32-c6-idf.yaml

@@ -0,0 +1,4 @@
+substitutions:
+  verify_ssl: "true"
+
+<<: !include common.yaml

tests/components/remote_receiver/bare-common.yaml

@@ -0,0 +1,6 @@
+# A receiver with no dumpers and no listeners compiles both lists out.
+# Only built while remote_receiver is tested in isolation: the counts are global defines,
+# so this variant cannot be merged with configs that register any.
+remote_receiver:
+  - id: rcvr_bare
+    pin: ${pin}

tests/components/remote_receiver/test-bare.esp32-idf.yaml

@@ -0,0 +1,5 @@
+substitutions:
+  pin: GPIO2
+
+packages:
+  bare: !include bare-common.yaml

tests/integration/fixtures/set_internal_at_boot.yaml

@@ -0,0 +1,34 @@
+esphome:
+  name: set-internal-at-boot
+  on_boot:
+    then:
+      - lambda: |-
+          id(hidden_at_boot).set_internal(true);
+          id(shown_at_boot).set_internal(false);
+
+host:
+
+api:
+  actions:
+    - action: set_internal_late
+      then:
+        - lambda: id(untouched).set_internal(true);
+
+logger:
+
+sensor:
+  - platform: template
+    name: "Hidden At Boot"
+    id: hidden_at_boot
+    lambda: return 1.0;
+
+  - platform: template
+    name: "Shown At Boot"
+    id: shown_at_boot
+    internal: true
+    lambda: return 2.0;
+
+  - platform: template
+    name: "Untouched"
+    id: untouched
+    lambda: return 3.0;