Merge pull request #13309 from esphome/bump-2026.1.0b3

2026.1.0b3

Doxyfile

@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2026.2.0-dev
+PROJECT_NUMBER         = 2026.1.0b3
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

esphome/analyze_memory/__init__.py

@@ -22,7 +22,7 @@ from .helpers import (
     map_section_name,
     parse_symbol_line,
 )
-from .toolchain import find_tool, resolve_tool_path, run_tool
+from .toolchain import find_tool, run_tool
 
 if TYPE_CHECKING:
     from esphome.platformio_api import IDEData
@@ -132,12 +132,6 @@ class MemoryAnalyzer:
             readelf_path = readelf_path or idedata.readelf_path
             _LOGGER.debug("Using toolchain paths from PlatformIO idedata")
 
-        # Validate paths exist, fall back to find_tool if they don't
-        # This handles cases like Zephyr where cc_path doesn't include full path
-        # and the toolchain prefix may differ (e.g., arm-zephyr-eabi- vs arm-none-eabi-)
-        objdump_path = resolve_tool_path("objdump", objdump_path, objdump_path)
-        readelf_path = resolve_tool_path("readelf", readelf_path, objdump_path)
-
         self.objdump_path = objdump_path or "objdump"
         self.readelf_path = readelf_path or "readelf"
         self.external_components = external_components or set()

esphome/analyze_memory/const.py

@@ -9,61 +9,11 @@ ESPHOME_COMPONENT_PATTERN = re.compile(r"esphome::([a-zA-Z0-9_]+)::")
 # Maps standard section names to their various platform-specific variants
 # Note: Order matters! More specific patterns (.bss) must come before general ones (.dram)
 # because ESP-IDF uses names like ".dram0.bss" which would match ".dram" otherwise
-#
-# Platform-specific sections:
-# - ESP8266/ESP32: .iram*, .dram*
-# - LibreTiny RTL87xx: .xip.code_* (flash), .ram.code_* (RAM)
-# - LibreTiny BK7231: .itcm.code (fast RAM), .vectors (interrupt vectors)
-# - LibreTiny LN882X: .flash_text, .flash_copy* (flash code)
-# - Zephyr/nRF52: text, rodata, datas, bss (no leading dots)
 SECTION_MAPPING = {
-    ".text": frozenset(
-        [
-            ".text",
-            ".iram",
-            # LibreTiny RTL87xx XIP (eXecute In Place) flash code
-            ".xip.code",
-            # LibreTiny RTL87xx RAM code
-            ".ram.code_text",
-            # LibreTiny BK7231 fast RAM code and vectors
-            ".itcm.code",
-            ".vectors",
-            # LibreTiny LN882X flash code
-            ".flash_text",
-            ".flash_copy",
-            # Zephyr/nRF52 sections (no leading dots)
-            "text",
-            "rom_start",
-        ]
-    ),
-    ".rodata": frozenset(
-        [
-            ".rodata",
-            # LibreTiny RTL87xx read-only data in RAM
-            ".ram.code_rodata",
-            # Zephyr/nRF52 sections (no leading dots)
-            "rodata",
-        ]
-    ),
-    # .bss patterns - must be before .data to catch ".dram0.bss"
-    ".bss": frozenset(
-        [
-            ".bss",
-            # LibreTiny LN882X BSS
-            ".bss_ram",
-            # Zephyr/nRF52 sections (no leading dots)
-            "bss",
-            "noinit",
-        ]
-    ),
-    ".data": frozenset(
-        [
-            ".data",
-            ".dram",
-            # Zephyr/nRF52 sections (no leading dots)
-            "datas",
-        ]
-    ),
+    ".text": frozenset([".text", ".iram"]),
+    ".rodata": frozenset([".rodata"]),
+    ".bss": frozenset([".bss"]),  # Must be before .data to catch ".dram0.bss"
+    ".data": frozenset([".data", ".dram"]),
 }
 
 # Section to ComponentMemory attribute mapping

esphome/analyze_memory/helpers.py

@@ -94,13 +94,13 @@ def parse_symbol_line(line: str) -> tuple[str, str, int, str] | None:
         return None
 
     # Find section, size, and name
-    # Try each part as a potential section name
     for i, part in enumerate(parts):
-        # Skip parts that are clearly flags, addresses, or other metadata
-        # Sections start with '.' (standard ELF) or are known section names (Zephyr)
+        if not part.startswith("."):
+            continue
+
         section = map_section_name(part)
         if not section:
-            continue
+            break
 
         # Need at least size field after section
         if i + 1 >= len(parts):

esphome/analyze_memory/toolchain.py

@@ -3,7 +3,6 @@
 from __future__ import annotations
 
 import logging
-import os
 from pathlib import Path
 import subprocess
 from typing import TYPE_CHECKING
@@ -18,82 +17,10 @@ TOOLCHAIN_PREFIXES = [
     "xtensa-lx106-elf-",  # ESP8266
     "xtensa-esp32-elf-",  # ESP32
     "xtensa-esp-elf-",  # ESP32 (newer IDF)
-    "arm-zephyr-eabi-",  # nRF52/Zephyr SDK
-    "arm-none-eabi-",  # Generic ARM (RP2040, etc.)
     "",  # System default (no prefix)
 ]
 
 
-def _find_in_platformio_packages(tool_name: str) -> str | None:
-    """Search for a tool in PlatformIO package directories.
-
-    This handles cases like Zephyr SDK where tools are installed in nested
-    directories that aren't in PATH.
-
-    Args:
-        tool_name: Name of the tool (e.g., "readelf", "objdump")
-
-    Returns:
-        Full path to the tool or None if not found
-    """
-    # Get PlatformIO packages directory
-    platformio_home = Path(os.path.expanduser("~/.platformio/packages"))
-    if not platformio_home.exists():
-        return None
-
-    # Search patterns for toolchains that might contain the tool
-    # Order matters - more specific patterns first
-    search_patterns = [
-        # Zephyr SDK deeply nested structure (4 levels)
-        # e.g., toolchain-gccarmnoneeabi/zephyr-sdk-0.17.4/arm-zephyr-eabi/bin/arm-zephyr-eabi-objdump
-        f"toolchain-*/*/*/bin/*-{tool_name}",
-        # Zephyr SDK nested structure (3 levels)
-        f"toolchain-*/*/bin/*-{tool_name}",
-        f"toolchain-*/bin/*-{tool_name}",
-        # Standard PlatformIO toolchain structure
-        f"toolchain-*/bin/*{tool_name}",
-    ]
-
-    for pattern in search_patterns:
-        matches = list(platformio_home.glob(pattern))
-        if matches:
-            # Sort to get consistent results, prefer arm-zephyr-eabi over arm-none-eabi
-            matches.sort(key=lambda p: ("zephyr" not in str(p), str(p)))
-            tool_path = str(matches[0])
-            _LOGGER.debug("Found %s in PlatformIO packages: %s", tool_name, tool_path)
-            return tool_path
-
-    return None
-
-
-def resolve_tool_path(
-    tool_name: str,
-    derived_path: str | None,
-    objdump_path: str | None = None,
-) -> str | None:
-    """Resolve a tool path, falling back to find_tool if derived path doesn't exist.
-
-    Args:
-        tool_name: Name of the tool (e.g., "objdump", "readelf")
-        derived_path: Path derived from idedata (may not exist for some platforms)
-        objdump_path: Path to objdump binary to derive other tool paths from
-
-    Returns:
-        Resolved path to the tool, or the original derived_path if it exists
-    """
-    if derived_path and not Path(derived_path).exists():
-        found = find_tool(tool_name, objdump_path)
-        if found:
-            _LOGGER.debug(
-                "Derived %s path %s not found, using %s",
-                tool_name,
-                derived_path,
-                found,
-            )
-            return found
-    return derived_path
-
-
 def find_tool(
     tool_name: str,
     objdump_path: str | None = None,
@@ -101,8 +28,7 @@ def find_tool(
     """Find a toolchain tool by name.
 
     First tries to derive the tool path from objdump_path (if provided),
-    then searches PlatformIO package directories (for cross-compile toolchains),
-    and finally falls back to searching for platform-specific tools in PATH.
+    then falls back to searching for platform-specific tools.
 
     Args:
         tool_name: Name of the tool (e.g., "objdump", "nm", "c++filt")
@@ -121,13 +47,7 @@ def find_tool(
             _LOGGER.debug("Found %s at: %s", tool_name, potential_path)
             return potential_path
 
-    # Search in PlatformIO packages directory first (handles Zephyr SDK, etc.)
-    # This must come before PATH search because system tools (e.g., /usr/bin/objdump)
-    # are for the host architecture, not the target (ARM, Xtensa, etc.)
-    if found := _find_in_platformio_packages(tool_name):
-        return found
-
-    # Try platform-specific tools in PATH (fallback for when tools are installed globally)
+    # Try platform-specific tools
     for prefix in TOOLCHAIN_PREFIXES:
         cmd = f"{prefix}{tool_name}"
         try:

esphome/components/api/proto.cpp

@@ -48,14 +48,14 @@ uint32_t ProtoDecodableMessage::count_repeated_field(const uint8_t *buffer, size
         }
         uint32_t field_length = res->as_uint32();
         ptr += consumed;
-        if (ptr + field_length > end) {
+        if (field_length > static_cast<size_t>(end - ptr)) {
           return count;  // Out of bounds
         }
         ptr += field_length;
         break;
       }
       case WIRE_TYPE_FIXED32: {  // 32-bit - skip 4 bytes
-        if (ptr + 4 > end) {
+        if (end - ptr < 4) {
           return count;
         }
         ptr += 4;
@@ -110,7 +110,7 @@ void ProtoDecodableMessage::decode(const uint8_t *buffer, size_t length) {
         }
         uint32_t field_length = res->as_uint32();
         ptr += consumed;
-        if (ptr + field_length > end) {
+        if (field_length > static_cast<size_t>(end - ptr)) {
           ESP_LOGV(TAG, "Out-of-bounds Length Delimited at offset %ld", (long) (ptr - buffer));
           return;
         }
@@ -121,7 +121,7 @@ void ProtoDecodableMessage::decode(const uint8_t *buffer, size_t length) {
         break;
       }
       case WIRE_TYPE_FIXED32: {  // 32-bit
-        if (ptr + 4 > end) {
+        if (end - ptr < 4) {
           ESP_LOGV(TAG, "Out-of-bounds Fixed32-bit at offset %ld", (long) (ptr - buffer));
           return;
         }

esphome/components/debug/debug_component.cpp

@@ -30,7 +30,7 @@ void DebugComponent::dump_config() {
 
   char device_info_buffer[DEVICE_INFO_BUFFER_SIZE];
   ESP_LOGD(TAG, "ESPHome version %s", ESPHOME_VERSION);
-  size_t pos = buf_append_printf(device_info_buffer, DEVICE_INFO_BUFFER_SIZE, 0, "%s", ESPHOME_VERSION);
+  size_t pos = buf_append(device_info_buffer, DEVICE_INFO_BUFFER_SIZE, 0, "%s", ESPHOME_VERSION);
 
   this->free_heap_ = get_free_heap_();
   ESP_LOGD(TAG, "Free Heap Size: %" PRIu32 " bytes", this->free_heap_);

esphome/components/debug/debug_component.h

@@ -5,6 +5,12 @@
 #include "esphome/core/helpers.h"
 #include "esphome/core/macros.h"
 #include <span>
+#include <cstdarg>
+#include <cstdio>
+#include <algorithm>
+#ifdef USE_ESP8266
+#include <pgmspace.h>
+#endif
 
 #ifdef USE_SENSOR
 #include "esphome/components/sensor/sensor.h"
@@ -19,7 +25,40 @@ namespace debug {
 static constexpr size_t DEVICE_INFO_BUFFER_SIZE = 256;
 static constexpr size_t RESET_REASON_BUFFER_SIZE = 128;
 
-// buf_append_printf is now provided by esphome/core/helpers.h
+#ifdef USE_ESP8266
+// ESP8266: Use vsnprintf_P to keep format strings in flash (PROGMEM)
+// Format strings must be wrapped with PSTR() macro
+inline size_t buf_append_p(char *buf, size_t size, size_t pos, PGM_P fmt, ...) {
+  if (pos >= size) {
+    return size;
+  }
+  va_list args;
+  va_start(args, fmt);
+  int written = vsnprintf_P(buf + pos, size - pos, fmt, args);
+  va_end(args);
+  if (written < 0) {
+    return pos;  // encoding error
+  }
+  return std::min(pos + static_cast<size_t>(written), size);
+}
+#define buf_append(buf, size, pos, fmt, ...) buf_append_p(buf, size, pos, PSTR(fmt), ##__VA_ARGS__)
+#else
+/// Safely append formatted string to buffer, returning new position (capped at size)
+__attribute__((format(printf, 4, 5))) inline size_t buf_append(char *buf, size_t size, size_t pos, const char *fmt,
+                                                               ...) {
+  if (pos >= size) {
+    return size;
+  }
+  va_list args;
+  va_start(args, fmt);
+  int written = vsnprintf(buf + pos, size - pos, fmt, args);
+  va_end(args);
+  if (written < 0) {
+    return pos;  // encoding error
+  }
+  return std::min(pos + static_cast<size_t>(written), size);
+}
+#endif
 
 class DebugComponent : public PollingComponent {
  public:
@@ -35,11 +74,8 @@ class DebugComponent : public PollingComponent {
 #ifdef USE_SENSOR
   void set_free_sensor(sensor::Sensor *free_sensor) { free_sensor_ = free_sensor; }
   void set_block_sensor(sensor::Sensor *block_sensor) { block_sensor_ = block_sensor; }
-#if (defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)) || defined(USE_ESP32)
+#if defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)
   void set_fragmentation_sensor(sensor::Sensor *fragmentation_sensor) { fragmentation_sensor_ = fragmentation_sensor; }
-#endif
-#if defined(USE_ESP32) || defined(USE_LIBRETINY)
-  void set_min_free_sensor(sensor::Sensor *min_free_sensor) { min_free_sensor_ = min_free_sensor; }
 #endif
   void set_loop_time_sensor(sensor::Sensor *loop_time_sensor) { loop_time_sensor_ = loop_time_sensor; }
 #ifdef USE_ESP32
@@ -61,11 +97,8 @@ class DebugComponent : public PollingComponent {
 
   sensor::Sensor *free_sensor_{nullptr};
   sensor::Sensor *block_sensor_{nullptr};
-#if (defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)) || defined(USE_ESP32)
+#if defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)
   sensor::Sensor *fragmentation_sensor_{nullptr};
-#endif
-#if defined(USE_ESP32) || defined(USE_LIBRETINY)
-  sensor::Sensor *min_free_sensor_{nullptr};
 #endif
   sensor::Sensor *loop_time_sensor_{nullptr};
 #ifdef USE_ESP32

esphome/components/debug/debug_esp32.cpp

@@ -173,8 +173,8 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
   uint32_t flash_size = ESP.getFlashChipSize() / 1024;       // NOLINT
   uint32_t flash_speed = ESP.getFlashChipSpeed() / 1000000;  // NOLINT
   ESP_LOGD(TAG, "Flash Chip: Size=%" PRIu32 "kB Speed=%" PRIu32 "MHz Mode=%s", flash_size, flash_speed, flash_mode);
-  pos = buf_append_printf(buf, size, pos, "|Flash: %" PRIu32 "kB Speed:%" PRIu32 "MHz Mode:%s", flash_size, flash_speed,
-                          flash_mode);
+  pos = buf_append(buf, size, pos, "|Flash: %" PRIu32 "kB Speed:%" PRIu32 "MHz Mode:%s", flash_size, flash_speed,
+                   flash_mode);
 #endif
 
   esp_chip_info_t info;
@@ -182,71 +182,60 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
   const char *model = ESPHOME_VARIANT;
 
   // Build features string
-  pos = buf_append_printf(buf, size, pos, "|Chip: %s Features:", model);
+  pos = buf_append(buf, size, pos, "|Chip: %s Features:", model);
   bool first_feature = true;
   for (const auto &feature : CHIP_FEATURES) {
     if (info.features & feature.bit) {
-      pos = buf_append_printf(buf, size, pos, "%s%s", first_feature ? "" : ", ", feature.name);
+      pos = buf_append(buf, size, pos, "%s%s", first_feature ? "" : ", ", feature.name);
       first_feature = false;
       info.features &= ~feature.bit;
     }
   }
   if (info.features != 0) {
-    pos = buf_append_printf(buf, size, pos, "%sOther:0x%" PRIx32, first_feature ? "" : ", ", info.features);
+    pos = buf_append(buf, size, pos, "%sOther:0x%" PRIx32, first_feature ? "" : ", ", info.features);
   }
   ESP_LOGD(TAG, "Chip: Model=%s, Cores=%u, Revision=%u", model, info.cores, info.revision);
-  pos = buf_append_printf(buf, size, pos, " Cores:%u Revision:%u", info.cores, info.revision);
+  pos = buf_append(buf, size, pos, " Cores:%u Revision:%u", info.cores, info.revision);
 
   uint32_t cpu_freq_mhz = arch_get_cpu_freq_hz() / 1000000;
   ESP_LOGD(TAG, "CPU Frequency: %" PRIu32 " MHz", cpu_freq_mhz);
-  pos = buf_append_printf(buf, size, pos, "|CPU Frequency: %" PRIu32 " MHz", cpu_freq_mhz);
+  pos = buf_append(buf, size, pos, "|CPU Frequency: %" PRIu32 " MHz", cpu_freq_mhz);
 
   // Framework detection
 #ifdef USE_ARDUINO
   ESP_LOGD(TAG, "Framework: Arduino");
-  pos = buf_append_printf(buf, size, pos, "|Framework: Arduino");
+  pos = buf_append(buf, size, pos, "|Framework: Arduino");
 #elif defined(USE_ESP32)
   ESP_LOGD(TAG, "Framework: ESP-IDF");
-  pos = buf_append_printf(buf, size, pos, "|Framework: ESP-IDF");
+  pos = buf_append(buf, size, pos, "|Framework: ESP-IDF");
 #else
   ESP_LOGW(TAG, "Framework: UNKNOWN");
-  pos = buf_append_printf(buf, size, pos, "|Framework: UNKNOWN");
+  pos = buf_append(buf, size, pos, "|Framework: UNKNOWN");
 #endif
 
   ESP_LOGD(TAG, "ESP-IDF Version: %s", esp_get_idf_version());
-  pos = buf_append_printf(buf, size, pos, "|ESP-IDF: %s", esp_get_idf_version());
+  pos = buf_append(buf, size, pos, "|ESP-IDF: %s", esp_get_idf_version());
 
   uint8_t mac[6];
   get_mac_address_raw(mac);
   ESP_LOGD(TAG, "EFuse MAC: %02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
-  pos = buf_append_printf(buf, size, pos, "|EFuse MAC: %02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3],
-                          mac[4], mac[5]);
+  pos = buf_append(buf, size, pos, "|EFuse MAC: %02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4],
+                   mac[5]);
 
   char reason_buffer[RESET_REASON_BUFFER_SIZE];
   const char *reset_reason = get_reset_reason_(std::span<char, RESET_REASON_BUFFER_SIZE>(reason_buffer));
-  pos = buf_append_printf(buf, size, pos, "|Reset: %s", reset_reason);
+  pos = buf_append(buf, size, pos, "|Reset: %s", reset_reason);
 
   const char *wakeup_cause = get_wakeup_cause_(std::span<char, RESET_REASON_BUFFER_SIZE>(reason_buffer));
-  pos = buf_append_printf(buf, size, pos, "|Wakeup: %s", wakeup_cause);
+  pos = buf_append(buf, size, pos, "|Wakeup: %s", wakeup_cause);
 
   return pos;
 }
 
 void DebugComponent::update_platform_() {
 #ifdef USE_SENSOR
-  uint32_t max_alloc = heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL);
   if (this->block_sensor_ != nullptr) {
-    this->block_sensor_->publish_state(max_alloc);
-  }
-  if (this->min_free_sensor_ != nullptr) {
-    this->min_free_sensor_->publish_state(heap_caps_get_minimum_free_size(MALLOC_CAP_INTERNAL));
-  }
-  if (this->fragmentation_sensor_ != nullptr) {
-    uint32_t free_heap = heap_caps_get_free_size(MALLOC_CAP_INTERNAL);
-    if (free_heap > 0) {
-      float fragmentation = 100.0f - (100.0f * max_alloc / free_heap);
-      this->fragmentation_sensor_->publish_state(fragmentation);
-    }
+    this->block_sensor_->publish_state(heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL));
   }
   if (this->psram_sensor_ != nullptr) {
     this->psram_sensor_->publish_state(heap_caps_get_free_size(MALLOC_CAP_SPIRAM));

esphome/components/debug/debug_esp8266.cpp

@@ -53,8 +53,8 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
   uint32_t flash_size = ESP.getFlashChipSize() / 1024;       // NOLINT
   uint32_t flash_speed = ESP.getFlashChipSpeed() / 1000000;  // NOLINT
   ESP_LOGD(TAG, "Flash Chip: Size=%" PRIu32 "kB Speed=%" PRIu32 "MHz Mode=%s", flash_size, flash_speed, flash_mode);
-  pos = buf_append_printf(buf, size, pos, "|Flash: %" PRIu32 "kB Speed:%" PRIu32 "MHz Mode:%s", flash_size, flash_speed,
-                          flash_mode);
+  pos = buf_append(buf, size, pos, "|Flash: %" PRIu32 "kB Speed:%" PRIu32 "MHz Mode:%s", flash_size, flash_speed,
+                   flash_mode);
 
 #if !defined(CLANG_TIDY)
   char reason_buffer[RESET_REASON_BUFFER_SIZE];
@@ -77,15 +77,15 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
            chip_id, ESP.getSdkVersion(), ESP.getCoreVersion().c_str(), boot_version, boot_mode, cpu_freq, flash_chip_id,
            reset_reason, ESP.getResetInfo().c_str());
 
-  pos = buf_append_printf(buf, size, pos, "|Chip: 0x%08" PRIX32, chip_id);
-  pos = buf_append_printf(buf, size, pos, "|SDK: %s", ESP.getSdkVersion());
-  pos = buf_append_printf(buf, size, pos, "|Core: %s", ESP.getCoreVersion().c_str());
-  pos = buf_append_printf(buf, size, pos, "|Boot: %u", boot_version);
-  pos = buf_append_printf(buf, size, pos, "|Mode: %u", boot_mode);
-  pos = buf_append_printf(buf, size, pos, "|CPU: %u", cpu_freq);
-  pos = buf_append_printf(buf, size, pos, "|Flash: 0x%08" PRIX32, flash_chip_id);
-  pos = buf_append_printf(buf, size, pos, "|Reset: %s", reset_reason);
-  pos = buf_append_printf(buf, size, pos, "|%s", ESP.getResetInfo().c_str());
+  pos = buf_append(buf, size, pos, "|Chip: 0x%08" PRIX32, chip_id);
+  pos = buf_append(buf, size, pos, "|SDK: %s", ESP.getSdkVersion());
+  pos = buf_append(buf, size, pos, "|Core: %s", ESP.getCoreVersion().c_str());
+  pos = buf_append(buf, size, pos, "|Boot: %u", boot_version);
+  pos = buf_append(buf, size, pos, "|Mode: %u", boot_mode);
+  pos = buf_append(buf, size, pos, "|CPU: %u", cpu_freq);
+  pos = buf_append(buf, size, pos, "|Flash: 0x%08" PRIX32, flash_chip_id);
+  pos = buf_append(buf, size, pos, "|Reset: %s", reset_reason);
+  pos = buf_append(buf, size, pos, "|%s", ESP.getResetInfo().c_str());
 #endif
 
   return pos;

esphome/components/debug/debug_libretiny.cpp

@@ -36,12 +36,12 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
            lt_get_version(), lt_cpu_get_model_name(), lt_cpu_get_model(), lt_cpu_get_freq_mhz(), mac_id,
            lt_get_board_code(), flash_kib, ram_kib, reset_reason);
 
-  pos = buf_append_printf(buf, size, pos, "|Version: %s", LT_BANNER_STR + 10);
-  pos = buf_append_printf(buf, size, pos, "|Reset Reason: %s", reset_reason);
-  pos = buf_append_printf(buf, size, pos, "|Chip Name: %s", lt_cpu_get_model_name());
-  pos = buf_append_printf(buf, size, pos, "|Chip ID: 0x%06" PRIX32, mac_id);
-  pos = buf_append_printf(buf, size, pos, "|Flash: %" PRIu32 " KiB", flash_kib);
-  pos = buf_append_printf(buf, size, pos, "|RAM: %" PRIu32 " KiB", ram_kib);
+  pos = buf_append(buf, size, pos, "|Version: %s", LT_BANNER_STR + 10);
+  pos = buf_append(buf, size, pos, "|Reset Reason: %s", reset_reason);
+  pos = buf_append(buf, size, pos, "|Chip Name: %s", lt_cpu_get_model_name());
+  pos = buf_append(buf, size, pos, "|Chip ID: 0x%06" PRIX32, mac_id);
+  pos = buf_append(buf, size, pos, "|Flash: %" PRIu32 " KiB", flash_kib);
+  pos = buf_append(buf, size, pos, "|RAM: %" PRIu32 " KiB", ram_kib);
 
   return pos;
 }
@@ -51,9 +51,6 @@ void DebugComponent::update_platform_() {
   if (this->block_sensor_ != nullptr) {
     this->block_sensor_->publish_state(lt_heap_get_max_alloc());
   }
-  if (this->min_free_sensor_ != nullptr) {
-    this->min_free_sensor_->publish_state(lt_heap_get_min_free());
-  }
 #endif
 }
 

esphome/components/debug/debug_rp2040.cpp

@@ -19,7 +19,7 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
 
   uint32_t cpu_freq = rp2040.f_cpu();
   ESP_LOGD(TAG, "CPU Frequency: %" PRIu32, cpu_freq);
-  pos = buf_append_printf(buf, size, pos, "|CPU Frequency: %" PRIu32, cpu_freq);
+  pos = buf_append(buf, size, pos, "|CPU Frequency: %" PRIu32, cpu_freq);
 
   return pos;
 }

esphome/components/debug/debug_zephyr.cpp

@@ -20,9 +20,9 @@ static size_t append_reset_reason(char *buf, size_t size, size_t pos, bool set,
     return pos;
   }
   if (pos > 0) {
-    pos = buf_append_printf(buf, size, pos, ", ");
+    pos = buf_append(buf, size, pos, ", ");
   }
-  return buf_append_printf(buf, size, pos, "%s", reason);
+  return buf_append(buf, size, pos, "%s", reason);
 }
 
 static inline uint32_t read_mem_u32(uintptr_t addr) {
@@ -140,7 +140,7 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
   const char *supply_status =
       (nrf_power_mainregstatus_get(NRF_POWER) == NRF_POWER_MAINREGSTATUS_NORMAL) ? "Normal voltage." : "High voltage.";
   ESP_LOGD(TAG, "Main supply status: %s", supply_status);
-  pos = buf_append_printf(buf, size, pos, "|Main supply status: %s", supply_status);
+  pos = buf_append(buf, size, pos, "|Main supply status: %s", supply_status);
 
   // Regulator stage 0
   if (nrf_power_mainregstatus_get(NRF_POWER) == NRF_POWER_MAINREGSTATUS_HIGH) {
@@ -172,16 +172,16 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
         reg0_voltage = "???V";
     }
     ESP_LOGD(TAG, "Regulator stage 0: %s, %s", reg0_type, reg0_voltage);
-    pos = buf_append_printf(buf, size, pos, "|Regulator stage 0: %s, %s", reg0_type, reg0_voltage);
+    pos = buf_append(buf, size, pos, "|Regulator stage 0: %s, %s", reg0_type, reg0_voltage);
   } else {
     ESP_LOGD(TAG, "Regulator stage 0: disabled");
-    pos = buf_append_printf(buf, size, pos, "|Regulator stage 0: disabled");
+    pos = buf_append(buf, size, pos, "|Regulator stage 0: disabled");
   }
 
   // Regulator stage 1
   const char *reg1_type = nrf_power_dcdcen_get(NRF_POWER) ? "DC/DC" : "LDO";
   ESP_LOGD(TAG, "Regulator stage 1: %s", reg1_type);
-  pos = buf_append_printf(buf, size, pos, "|Regulator stage 1: %s", reg1_type);
+  pos = buf_append(buf, size, pos, "|Regulator stage 1: %s", reg1_type);
 
   // USB power state
   const char *usb_state;
@@ -195,7 +195,7 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
     usb_state = "disconnected";
   }
   ESP_LOGD(TAG, "USB power state: %s", usb_state);
-  pos = buf_append_printf(buf, size, pos, "|USB power state: %s", usb_state);
+  pos = buf_append(buf, size, pos, "|USB power state: %s", usb_state);
 
   // Power-fail comparator
   bool enabled;
@@ -300,14 +300,14 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
           break;
       }
       ESP_LOGD(TAG, "Power-fail comparator: %s, VDDH: %s", pof_voltage, vddh_voltage);
-      pos = buf_append_printf(buf, size, pos, "|Power-fail comparator: %s, VDDH: %s", pof_voltage, vddh_voltage);
+      pos = buf_append(buf, size, pos, "|Power-fail comparator: %s, VDDH: %s", pof_voltage, vddh_voltage);
     } else {
       ESP_LOGD(TAG, "Power-fail comparator: %s", pof_voltage);
-      pos = buf_append_printf(buf, size, pos, "|Power-fail comparator: %s", pof_voltage);
+      pos = buf_append(buf, size, pos, "|Power-fail comparator: %s", pof_voltage);
     }
   } else {
     ESP_LOGD(TAG, "Power-fail comparator: disabled");
-    pos = buf_append_printf(buf, size, pos, "|Power-fail comparator: disabled");
+    pos = buf_append(buf, size, pos, "|Power-fail comparator: disabled");
   }
 
   auto package = [](uint32_t value) {

esphome/components/debug/sensor.py

@@ -11,9 +11,6 @@ from esphome.const import (
     ENTITY_CATEGORY_DIAGNOSTIC,
     ICON_COUNTER,
     ICON_TIMER,
-    PLATFORM_BK72XX,
-    PLATFORM_LN882X,
-    PLATFORM_RTL87XX,
     UNIT_BYTES,
     UNIT_HERTZ,
     UNIT_MILLISECOND,
@@ -28,7 +25,6 @@ from . import (  # noqa: F401  pylint: disable=unused-import
 
 DEPENDENCIES = ["debug"]
 
-CONF_MIN_FREE = "min_free"
 CONF_PSRAM = "psram"
 
 CONFIG_SCHEMA = {
@@ -46,14 +42,8 @@ CONFIG_SCHEMA = {
         entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
     ),
     cv.Optional(CONF_FRAGMENTATION): cv.All(
-        cv.Any(
-            cv.All(
-                cv.only_on_esp8266,
-                cv.require_framework_version(esp8266_arduino=cv.Version(2, 5, 2)),
-            ),
-            cv.only_on_esp32,
-            msg="This feature is only available on ESP8266 (Arduino 2.5.2+) and ESP32",
-        ),
+        cv.only_on_esp8266,
+        cv.require_framework_version(esp8266_arduino=cv.Version(2, 5, 2)),
         sensor.sensor_schema(
             unit_of_measurement=UNIT_PERCENT,
             icon=ICON_COUNTER,
@@ -61,19 +51,6 @@ CONFIG_SCHEMA = {
             entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
         ),
     ),
-    cv.Optional(CONF_MIN_FREE): cv.All(
-        cv.Any(
-            cv.only_on_esp32,
-            cv.only_on([PLATFORM_BK72XX, PLATFORM_LN882X, PLATFORM_RTL87XX]),
-            msg="This feature is only available on ESP32 and LibreTiny (BK72xx, LN882x, RTL87xx)",
-        ),
-        sensor.sensor_schema(
-            unit_of_measurement=UNIT_BYTES,
-            icon=ICON_COUNTER,
-            accuracy_decimals=0,
-            entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
-        ),
-    ),
     cv.Optional(CONF_LOOP_TIME): sensor.sensor_schema(
         unit_of_measurement=UNIT_MILLISECOND,
         icon=ICON_TIMER,
@@ -116,10 +93,6 @@ async def to_code(config):
         sens = await sensor.new_sensor(fragmentation_conf)
         cg.add(debug_component.set_fragmentation_sensor(sens))
 
-    if min_free_conf := config.get(CONF_MIN_FREE):
-        sens = await sensor.new_sensor(min_free_conf)
-        cg.add(debug_component.set_min_free_sensor(sens))
-
     if loop_time_conf := config.get(CONF_LOOP_TIME):
         sens = await sensor.new_sensor(loop_time_conf)
         cg.add(debug_component.set_loop_time_sensor(sens))

esphome/components/hmac_sha256/hmac_sha256.cpp

@@ -1,4 +1,3 @@
-#include <cstdio>
 #include <cstring>
 #include "hmac_sha256.h"
 #if defined(USE_ESP32) || defined(USE_ESP8266) || defined(USE_RP2040) || defined(USE_LIBRETINY) || defined(USE_HOST)
@@ -26,9 +25,7 @@ void HmacSHA256::calculate() { mbedtls_md_hmac_finish(&this->ctx_, this->digest_
 void HmacSHA256::get_bytes(uint8_t *output) { memcpy(output, this->digest_, SHA256_DIGEST_SIZE); }
 
 void HmacSHA256::get_hex(char *output) {
-  for (size_t i = 0; i < SHA256_DIGEST_SIZE; i++) {
-    sprintf(output + (i * 2), "%02x", this->digest_[i]);
-  }
+  format_hex_to(output, SHA256_DIGEST_SIZE * 2 + 1, this->digest_, SHA256_DIGEST_SIZE);
 }
 
 bool HmacSHA256::equals_bytes(const uint8_t *expected) {

esphome/components/http_request/http_request.h

@@ -242,9 +242,7 @@ template<typename... Ts> class HttpRequestSendAction : public Action<Ts...> {
       return;
     }
 
-    size_t content_length = container->content_length;
-    size_t max_length = std::min(content_length, this->max_response_buffer_size_);
-
+    size_t max_length = this->max_response_buffer_size_;
 #ifdef USE_HTTP_REQUEST_RESPONSE
     if (this->capture_response_.value(x...)) {
       std::string response_body;

esphome/components/http_request/http_request_idf.cpp

@@ -213,18 +213,12 @@ int HttpContainerIDF::read(uint8_t *buf, size_t max_len) {
   const uint32_t start = millis();
   watchdog::WatchdogManager wdm(this->parent_->get_watchdog_timeout());
 
-  int bufsize = std::min(max_len, this->content_length - this->bytes_read_);
-
-  if (bufsize == 0) {
-    this->duration_ms += (millis() - start);
-    return 0;
+  this->feed_wdt();
+  int read_len = esp_http_client_read(this->client_, (char *) buf, max_len);
+  this->feed_wdt();
+  if (read_len > 0) {
+    this->bytes_read_ += read_len;
   }
-
-  this->feed_wdt();
-  int read_len = esp_http_client_read(this->client_, (char *) buf, bufsize);
-  this->feed_wdt();
-  this->bytes_read_ += read_len;
-
   this->duration_ms += (millis() - start);
 
   return read_len;

esphome/components/hub75/display.py

@@ -1,3 +1,4 @@
+import logging
 from typing import Any
 
 from esphome import automation, pins
@@ -18,13 +19,16 @@ from esphome.const import (
     CONF_ROTATION,
     CONF_UPDATE_INTERVAL,
 )
-from esphome.core import ID
+from esphome.core import ID, EnumValue
 from esphome.cpp_generator import MockObj, TemplateArgsType
 import esphome.final_validate as fv
+from esphome.helpers import add_class_to_obj
 from esphome.types import ConfigType
 
 from . import boards, hub75_ns
 
+_LOGGER = logging.getLogger(__name__)
+
 DEPENDENCIES = ["esp32"]
 CODEOWNERS = ["@stuartparmenter"]
 
@@ -120,13 +124,51 @@ PANEL_LAYOUTS = {
 }
 
 Hub75ScanWiring = cg.global_ns.enum("Hub75ScanWiring", is_class=True)
-SCAN_PATTERNS = {
+SCAN_WIRINGS = {
     "STANDARD_TWO_SCAN": Hub75ScanWiring.STANDARD_TWO_SCAN,
-    "FOUR_SCAN_16PX_HIGH": Hub75ScanWiring.FOUR_SCAN_16PX_HIGH,
-    "FOUR_SCAN_32PX_HIGH": Hub75ScanWiring.FOUR_SCAN_32PX_HIGH,
-    "FOUR_SCAN_64PX_HIGH": Hub75ScanWiring.FOUR_SCAN_64PX_HIGH,
+    "SCAN_1_4_16PX_HIGH": Hub75ScanWiring.SCAN_1_4_16PX_HIGH,
+    "SCAN_1_8_32PX_HIGH": Hub75ScanWiring.SCAN_1_8_32PX_HIGH,
+    "SCAN_1_8_40PX_HIGH": Hub75ScanWiring.SCAN_1_8_40PX_HIGH,
+    "SCAN_1_8_64PX_HIGH": Hub75ScanWiring.SCAN_1_8_64PX_HIGH,
 }
 
+# Deprecated scan wiring names - mapped to new names
+DEPRECATED_SCAN_WIRINGS = {
+    "FOUR_SCAN_16PX_HIGH": "SCAN_1_4_16PX_HIGH",
+    "FOUR_SCAN_32PX_HIGH": "SCAN_1_8_32PX_HIGH",
+    "FOUR_SCAN_64PX_HIGH": "SCAN_1_8_64PX_HIGH",
+}
+
+
+def _validate_scan_wiring(value):
+    """Validate scan_wiring with deprecation warnings for old names."""
+    value = cv.string(value).upper().replace(" ", "_")
+
+    # Check if using deprecated name
+    # Remove deprecated names in 2026.7.0
+    if value in DEPRECATED_SCAN_WIRINGS:
+        new_name = DEPRECATED_SCAN_WIRINGS[value]
+        _LOGGER.warning(
+            "Scan wiring '%s' is deprecated and will be removed in ESPHome 2026.7.0. "
+            "Please use '%s' instead.",
+            value,
+            new_name,
+        )
+        value = new_name
+
+    # Validate against allowed values
+    if value not in SCAN_WIRINGS:
+        raise cv.Invalid(
+            f"Unknown scan wiring '{value}'. "
+            f"Valid options are: {', '.join(sorted(SCAN_WIRINGS.keys()))}"
+        )
+
+    # Return as EnumValue like cv.enum does
+    result = add_class_to_obj(value, EnumValue)
+    result.enum_value = SCAN_WIRINGS[value]
+    return result
+
+
 Hub75ClockSpeed = cg.global_ns.enum("Hub75ClockSpeed", is_class=True)
 CLOCK_SPEEDS = {
     "8MHZ": Hub75ClockSpeed.HZ_8M,
@@ -382,9 +424,7 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_LAYOUT_COLS): cv.positive_int,
             cv.Optional(CONF_LAYOUT): cv.enum(PANEL_LAYOUTS, upper=True, space="_"),
             # Panel hardware configuration
-            cv.Optional(CONF_SCAN_WIRING): cv.enum(
-                SCAN_PATTERNS, upper=True, space="_"
-            ),
+            cv.Optional(CONF_SCAN_WIRING): _validate_scan_wiring,
             cv.Optional(CONF_SHIFT_DRIVER): cv.enum(SHIFT_DRIVERS, upper=True),
             # Display configuration
             cv.Optional(CONF_DOUBLE_BUFFER): cv.boolean,
@@ -547,7 +587,7 @@ def _build_config_struct(
 async def to_code(config: ConfigType) -> None:
     add_idf_component(
         name="esphome/esp-hub75",
-        ref="0.2.2",
+        ref="0.3.0",
     )
 
     # Set compile-time configuration via build flags (so external library sees them)

esphome/components/infrared/infrared.cpp

@@ -18,15 +18,7 @@ InfraredCall &InfraredCall::set_carrier_frequency(uint32_t frequency) {
 
 InfraredCall &InfraredCall::set_raw_timings(const std::vector<int32_t> &timings) {
   this->raw_timings_ = &timings;
-  this->packed_data_ = nullptr;
-  this->base85_ptr_ = nullptr;
-  return *this;
-}
-
-InfraredCall &InfraredCall::set_raw_timings_base85(const std::string &base85) {
-  this->base85_ptr_ = &base85;
-  this->raw_timings_ = nullptr;
-  this->packed_data_ = nullptr;
+  this->packed_data_ = nullptr;  // Clear packed if vector is set
   return *this;
 }
 
@@ -34,8 +26,7 @@ InfraredCall &InfraredCall::set_raw_timings_packed(const uint8_t *data, uint16_t
   this->packed_data_ = data;
   this->packed_length_ = length;
   this->packed_count_ = count;
-  this->raw_timings_ = nullptr;
-  this->base85_ptr_ = nullptr;
+  this->raw_timings_ = nullptr;  // Clear vector if packed is set
   return *this;
 }
 
@@ -101,14 +92,6 @@ void Infrared::control(const InfraredCall &call) {
                                                call.get_packed_count());
     ESP_LOGD(TAG, "Transmitting packed raw timings: count=%u, repeat=%u", call.get_packed_count(),
              call.get_repeat_count());
-  } else if (call.is_base85()) {
-    // Decode base85 directly into transmit buffer (zero heap allocations)
-    if (!transmit_data->set_data_from_base85(call.get_base85_data())) {
-      ESP_LOGE(TAG, "Invalid base85 data");
-      return;
-    }
-    ESP_LOGD(TAG, "Transmitting base85 raw timings: count=%zu, repeat=%u", transmit_data->get_data().size(),
-             call.get_repeat_count());
   } else {
     // From vector (lambdas/automations)
     transmit_data->set_data(call.get_raw_timings());

esphome/components/infrared/infrared.h

@@ -28,29 +28,12 @@ class InfraredCall {
 
   /// Set the carrier frequency in Hz
   InfraredCall &set_carrier_frequency(uint32_t frequency);
-
-  // ===== Raw Timings Methods =====
-  // All set_raw_timings_* methods store pointers/references to external data.
-  // The referenced data must remain valid until perform() completes.
-  // Safe pattern:   call.set_raw_timings_xxx(data); call.perform();  // synchronous
-  // Unsafe pattern: call.set_raw_timings_xxx(data); defer([call]() { call.perform(); });  // data may be gone!
-
-  /// Set the raw timings from a vector (positive = mark, negative = space)
-  /// @note Lifetime: Stores a pointer to the vector. The vector must outlive perform().
-  /// @note Usage: Primarily for lambdas/automations where the vector is in scope.
+  /// Set the raw timings (positive = mark, negative = space)
+  /// Note: The timings vector must outlive the InfraredCall (zero-copy reference)
   InfraredCall &set_raw_timings(const std::vector<int32_t> &timings);
-
-  /// Set the raw timings from base85-encoded int32 data
-  /// @note Lifetime: Stores a pointer to the string. The string must outlive perform().
-  /// @note Usage: For web_server where the encoded string is on the stack.
-  /// @note Decoding happens at perform() time, directly into the transmit buffer.
-  InfraredCall &set_raw_timings_base85(const std::string &base85);
-
-  /// Set the raw timings from packed protobuf sint32 data (zigzag + varint encoded)
-  /// @note Lifetime: Stores a pointer to the buffer. The buffer must outlive perform().
-  /// @note Usage: For API component where data comes directly from the protobuf message.
+  /// Set the raw timings from packed protobuf sint32 data (zero-copy from wire)
+  /// Note: The data must outlive the InfraredCall
   InfraredCall &set_raw_timings_packed(const uint8_t *data, uint16_t length, uint16_t count);
-
   /// Set the number of times to repeat transmission (1 = transmit once, 2 = transmit twice, etc.)
   InfraredCall &set_repeat_count(uint32_t count);
 
@@ -59,18 +42,12 @@ class InfraredCall {
 
   /// Get the carrier frequency
   const optional<uint32_t> &get_carrier_frequency() const { return this->carrier_frequency_; }
-  /// Get the raw timings (only valid if set via set_raw_timings, not packed or base85)
+  /// Get the raw timings (only valid if set via set_raw_timings, not packed)
   const std::vector<int32_t> &get_raw_timings() const { return *this->raw_timings_; }
-  /// Check if raw timings have been set (vector, packed, or base85)
-  bool has_raw_timings() const {
-    return this->raw_timings_ != nullptr || this->packed_data_ != nullptr || this->base85_ptr_ != nullptr;
-  }
+  /// Check if raw timings have been set (either vector or packed)
+  bool has_raw_timings() const { return this->raw_timings_ != nullptr || this->packed_data_ != nullptr; }
   /// Check if using packed data format
   bool is_packed() const { return this->packed_data_ != nullptr; }
-  /// Check if using base85 data format
-  bool is_base85() const { return this->base85_ptr_ != nullptr; }
-  /// Get the base85 data string
-  const std::string &get_base85_data() const { return *this->base85_ptr_; }
   /// Get packed data (only valid if set via set_raw_timings_packed)
   const uint8_t *get_packed_data() const { return this->packed_data_; }
   uint16_t get_packed_length() const { return this->packed_length_; }
@@ -82,11 +59,9 @@ class InfraredCall {
   uint32_t repeat_count_{1};
   Infrared *parent_;
   optional<uint32_t> carrier_frequency_;
-  // Pointer to vector-based timings (caller-owned, must outlive perform())
+  // Vector-based timings (for lambdas/automations)
   const std::vector<int32_t> *raw_timings_{nullptr};
-  // Pointer to base85-encoded string (caller-owned, must outlive perform())
-  const std::string *base85_ptr_{nullptr};
-  // Pointer to packed protobuf buffer (caller-owned, must outlive perform())
+  // Packed protobuf timings (for API zero-copy)
   const uint8_t *packed_data_{nullptr};
   uint16_t packed_length_{0};
   uint16_t packed_count_{0};

esphome/components/lvgl/lv_validation.py

@@ -413,7 +413,6 @@ class TextValidator(LValidator):
                 str_args = [str(x) for x in value[CONF_ARGS]]
                 arg_expr = cg.RawExpression(",".join(str_args))
                 format_str = cpp_string_escape(format_str)
-                # str_sprintf justified: user-defined format, can't optimize without permanent RAM cost
                 sprintf_str = f"str_sprintf({format_str}, {arg_expr}).c_str()"
                 if nanval := value.get(CONF_IF_NAN):
                     nanval = cpp_string_escape(nanval)

esphome/components/lvgl/lvgl_esphome.cpp

@@ -65,10 +65,7 @@ std::string lv_event_code_name_for(uint8_t event_code) {
   if (event_code < sizeof(EVENT_NAMES) / sizeof(EVENT_NAMES[0])) {
     return EVENT_NAMES[event_code];
   }
-  // max 4 bytes: "%u" with uint8_t (max 255, 3 digits) + null
-  char buf[4];
-  snprintf(buf, sizeof(buf), "%u", event_code);
-  return buf;
+  return str_sprintf("%2d", event_code);
 }
 
 static void rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area) {

esphome/components/ntc/ntc.cpp

@@ -23,7 +23,7 @@ void NTC::process_(float value) {
   double v = this->a_ + this->b_ * lr + this->c_ * lr * lr * lr;
   auto temp = float(1.0 / v - 273.15);
 
-  ESP_LOGD(TAG, "'%s' - Temperature: %.1f°C", this->name_.c_str(), temp);
+  ESP_LOGV(TAG, "'%s' - Temperature: %.1f°C", this->name_.c_str(), temp);
   this->publish_state(temp);
 }
 

esphome/components/remote_base/remote_base.cpp

@@ -159,10 +159,6 @@ void RemoteTransmitData::set_data_from_packed_sint32(const uint8_t *data, size_t
   }
 }
 
-bool RemoteTransmitData::set_data_from_base85(const std::string &base85) {
-  return base85_decode_int32_vector(base85, this->data_);
-}
-
 /* RemoteTransmitterBase */
 
 void RemoteTransmitterBase::send_(uint32_t send_times, uint32_t send_wait) {

esphome/components/remote_base/remote_base.h

@@ -36,11 +36,6 @@ class RemoteTransmitData {
   /// @param len Length of the buffer in bytes
   /// @param count Number of values (for reserve optimization)
   void set_data_from_packed_sint32(const uint8_t *data, size_t len, size_t count);
-  /// Set data from base85-encoded int32 values
-  /// Decodes directly into internal buffer (zero heap allocations)
-  /// @param base85 Base85-encoded string (5 chars per int32 value)
-  /// @return true if successful, false if decode failed or invalid size
-  bool set_data_from_base85(const std::string &base85);
   void reset() {
     this->data_.clear();
     this->carrier_frequency_ = 0;

esphome/components/resistance/resistance_sensor.cpp

@@ -39,7 +39,7 @@ void ResistanceSensor::process_(float value) {
   }
 
   res *= this->resistor_;
-  ESP_LOGD(TAG, "'%s' - Resistance %.1fΩ", this->name_.c_str(), res);
+  ESP_LOGV(TAG, "'%s' - Resistance %.1fΩ", this->name_.c_str(), res);
   this->publish_state(res);
 }
 

esphome/components/web_server/web_server.cpp

@@ -753,6 +753,9 @@ void WebServer::handle_button_request(AsyncWebServerRequest *request, const UrlM
   }
   request->send(404);
 }
+std::string WebServer::button_state_json_generator(WebServer *web_server, void *source) {
+  return web_server->button_json_((button::Button *) (source), DETAIL_STATE);
+}
 std::string WebServer::button_all_json_generator(WebServer *web_server, void *source) {
   return web_server->button_json_((button::Button *) (source), DETAIL_ALL);
 }

esphome/components/web_server/web_server.h

@@ -295,7 +295,7 @@ class WebServer : public Controller,
   /// Handle a button request under '/button/<id>/press'.
   void handle_button_request(AsyncWebServerRequest *request, const UrlMatch &match);
 
-  // Buttons are stateless, so there is no button_state_json_generator
+  static std::string button_state_json_generator(WebServer *web_server, void *source);
   static std::string button_all_json_generator(WebServer *web_server, void *source);
 #endif
 

esphome/const.py

@@ -4,7 +4,7 @@ from enum import Enum
 
 from esphome.enum import StrEnum
 
-__version__ = "2026.2.0-dev"
+__version__ = "2026.1.0b3"
 
 ALLOWED_NAME_CHARS = "abcdefghijklmnopqrstuvwxyz0123456789-_"
 VALID_SUBSTITUTIONS_CHARACTERS = (

esphome/core/helpers.cpp

@@ -617,55 +617,6 @@ std::vector<uint8_t> base64_decode(const std::string &encoded_string) {
   return ret;
 }
 
-/// Encode int32 to 5 base85 characters + null terminator
-/// Standard ASCII85 alphabet: '!' (33) = 0 through 'u' (117) = 84
-inline void base85_encode_int32(int32_t value, std::span<char, BASE85_INT32_ENCODED_SIZE> output) {
-  uint32_t v = static_cast<uint32_t>(value);
-  // Encode least significant digit first, then reverse
-  for (int i = 4; i >= 0; i--) {
-    output[i] = static_cast<char>('!' + (v % 85));
-    v /= 85;
-  }
-  output[5] = '\0';
-}
-
-/// Decode 5 base85 characters to int32
-inline bool base85_decode_int32(const char *input, int32_t &out) {
-  uint8_t c0 = static_cast<uint8_t>(input[0] - '!');
-  uint8_t c1 = static_cast<uint8_t>(input[1] - '!');
-  uint8_t c2 = static_cast<uint8_t>(input[2] - '!');
-  uint8_t c3 = static_cast<uint8_t>(input[3] - '!');
-  uint8_t c4 = static_cast<uint8_t>(input[4] - '!');
-
-  // Each digit must be 0-84. Since uint8_t wraps, chars below '!' become > 84
-  if (c0 > 84 || c1 > 84 || c2 > 84 || c3 > 84 || c4 > 84)
-    return false;
-
-  // 85^4 = 52200625, 85^3 = 614125, 85^2 = 7225, 85^1 = 85
-  out = static_cast<int32_t>(c0 * 52200625u + c1 * 614125u + c2 * 7225u + c3 * 85u + c4);
-  return true;
-}
-
-/// Decode base85 string directly into vector (no intermediate buffer)
-bool base85_decode_int32_vector(const std::string &base85, std::vector<int32_t> &out) {
-  size_t len = base85.size();
-  if (len % 5 != 0)
-    return false;
-
-  out.clear();
-  const char *ptr = base85.data();
-  const char *end = ptr + len;
-
-  while (ptr < end) {
-    int32_t value;
-    if (!base85_decode_int32(ptr, value))
-      return false;
-    out.push_back(value);
-    ptr += 5;
-  }
-  return true;
-}
-
 // Colors
 
 float gamma_correct(float value, float gamma) {

esphome/core/helpers.h

@@ -1,11 +1,8 @@
 #pragma once
 
-#include <algorithm>
 #include <array>
 #include <cmath>
-#include <cstdarg>
 #include <cstdint>
-#include <cstdio>
 #include <cstring>
 #include <functional>
 #include <iterator>
@@ -21,7 +18,6 @@
 
 #ifdef USE_ESP8266
 #include <Esp.h>
-#include <pgmspace.h>
 #endif
 
 #ifdef USE_RP2040
@@ -572,53 +568,6 @@ std::string __attribute__((format(printf, 1, 3))) str_snprintf(const char *fmt,
 /// sprintf-like function returning std::string.
 std::string __attribute__((format(printf, 1, 2))) str_sprintf(const char *fmt, ...);
 
-#ifdef USE_ESP8266
-// ESP8266: Use vsnprintf_P to keep format strings in flash (PROGMEM)
-// Format strings must be wrapped with PSTR() macro
-/// Safely append formatted string to buffer, returning new position (capped at size).
-/// @param buf Output buffer
-/// @param size Total buffer size
-/// @param pos Current position in buffer
-/// @param fmt Format string (must be in PROGMEM on ESP8266)
-/// @return New position after appending (capped at size on overflow)
-inline size_t buf_append_printf_p(char *buf, size_t size, size_t pos, PGM_P fmt, ...) {
-  if (pos >= size) {
-    return size;
-  }
-  va_list args;
-  va_start(args, fmt);
-  int written = vsnprintf_P(buf + pos, size - pos, fmt, args);
-  va_end(args);
-  if (written < 0) {
-    return pos;  // encoding error
-  }
-  return std::min(pos + static_cast<size_t>(written), size);
-}
-#define buf_append_printf(buf, size, pos, fmt, ...) buf_append_printf_p(buf, size, pos, PSTR(fmt), ##__VA_ARGS__)
-#else
-/// Safely append formatted string to buffer, returning new position (capped at size).
-/// Handles snprintf edge cases: negative returns (encoding errors) and truncation.
-/// @param buf Output buffer
-/// @param size Total buffer size
-/// @param pos Current position in buffer
-/// @param fmt printf-style format string
-/// @return New position after appending (capped at size on overflow)
-__attribute__((format(printf, 4, 5))) inline size_t buf_append_printf(char *buf, size_t size, size_t pos,
-                                                                      const char *fmt, ...) {
-  if (pos >= size) {
-    return size;
-  }
-  va_list args;
-  va_start(args, fmt);
-  int written = vsnprintf(buf + pos, size - pos, fmt, args);
-  va_end(args);
-  if (written < 0) {
-    return pos;  // encoding error
-  }
-  return std::min(pos + static_cast<size_t>(written), size);
-}
-#endif
-
 /// Concatenate a name with a separator and suffix using an efficient stack-based approach.
 /// This avoids multiple heap allocations during string construction.
 /// Maximum name length supported is 120 characters for friendly names.
@@ -1137,14 +1086,6 @@ std::vector<uint8_t> base64_decode(const std::string &encoded_string);
 size_t base64_decode(std::string const &encoded_string, uint8_t *buf, size_t buf_len);
 size_t base64_decode(const uint8_t *encoded_data, size_t encoded_len, uint8_t *buf, size_t buf_len);
 
-/// Size of buffer needed for base85 encoded int32 (5 chars + null terminator)
-static constexpr size_t BASE85_INT32_ENCODED_SIZE = 6;
-
-void base85_encode_int32(int32_t value, std::span<char, BASE85_INT32_ENCODED_SIZE> output);
-
-bool base85_decode_int32(const char *input, int32_t &out);
-bool base85_decode_int32_vector(const std::string &base85, std::vector<int32_t> &out);
-
 ///@}
 
 /// @name Colors

esphome/idf_component.yml

@@ -28,8 +28,8 @@ dependencies:
     rules:
       - if: "target in [esp32s2, esp32s3, esp32p4]"
   esphome/esp-hub75:
-    version: 0.2.2
+    version: 0.3.0
     rules:
-      - if: "target in [esp32, esp32s2, esp32s3, esp32p4]"
+      - if: "target in [esp32, esp32s2, esp32s3, esp32c6, esp32p4]"
   esp32async/asynctcp:
     version: 3.4.91

requirements.txt

@@ -19,7 +19,7 @@ ruamel.yaml==0.19.1 # dashboard_import
 ruamel.yaml.clib==0.2.15 # dashboard_import
 esphome-glyphsets==0.2.0
 pillow==11.3.0
-resvg-py==0.2.6
+resvg-py==0.2.5
 freetype-py==2.5.1
 jinja2==3.1.6
 bleak==2.1.1

requirements_test.txt

@@ -1,6 +1,6 @@
 pylint==4.0.4
 flake8==7.3.0  # also change in .pre-commit-config.yaml when updating
-ruff==0.14.12  # also change in .pre-commit-config.yaml when updating
+ruff==0.14.11  # also change in .pre-commit-config.yaml when updating
 pyupgrade==3.21.2  # also change in .pre-commit-config.yaml when updating
 pre-commit
 

script/determine-jobs.py

@@ -90,10 +90,7 @@ class Platform(StrEnum):
     ESP32_S2_IDF = "esp32-s2-idf"
     ESP32_S3_IDF = "esp32-s3-idf"
     BK72XX_ARD = "bk72xx-ard"  # LibreTiny BK7231N
-    RTL87XX_ARD = "rtl87xx-ard"  # LibreTiny RTL8720x
-    LN882X_ARD = "ln882x-ard"  # LibreTiny LN882x
     RP2040_ARD = "rp2040-ard"  # Raspberry Pi Pico
-    NRF52_ZEPHYR = "nrf52-adafruit"  # Nordic nRF52 (Zephyr)
 
 
 # Memory impact analysis constants
@@ -113,7 +110,7 @@ PLATFORM_SPECIFIC_COMPONENTS = frozenset(
         "rtl87xx",  # Realtek RTL87xx platform implementation (uses LibreTiny)
         "ln882x",  # Winner Micro LN882x platform implementation (uses LibreTiny)
         "host",  # Host platform (for testing on development machine)
-        "nrf52",  # Nordic nRF52 platform implementation (uses Zephyr)
+        "nrf52",  # Nordic nRF52 platform implementation
     }
 )
 
@@ -125,9 +122,8 @@ PLATFORM_SPECIFIC_COMPONENTS = frozenset(
 #                      fastest build times, most sensitive to code size changes
 # 3. ESP32 IDF - Primary ESP32 platform, most representative of modern ESPHome
 # 4-6. Other ESP32 variants - Less commonly used but still supported
-# 7-9. LibreTiny platforms (BK72XX, RTL87XX, LN882X) - good for detecting LibreTiny-specific changes
-# 10. RP2040 - Raspberry Pi Pico platform
-# 11. nRF52 - Nordic nRF52 with Zephyr (good for detecting Zephyr-specific changes)
+# 7. BK72XX - LibreTiny platform (good for detecting LibreTiny-specific changes)
+# 8. RP2040 - Raspberry Pi Pico platform
 MEMORY_IMPACT_PLATFORM_PREFERENCE = [
     Platform.ESP32_C6_IDF,  # ESP32-C6 IDF (newest, supports Thread/Zigbee)
     Platform.ESP8266_ARD,  # ESP8266 Arduino (most memory constrained, fastest builds)
@@ -136,10 +132,7 @@ MEMORY_IMPACT_PLATFORM_PREFERENCE = [
     Platform.ESP32_S2_IDF,  # ESP32-S2 IDF
     Platform.ESP32_S3_IDF,  # ESP32-S3 IDF
     Platform.BK72XX_ARD,  # LibreTiny BK7231N
-    Platform.RTL87XX_ARD,  # LibreTiny RTL8720x
-    Platform.LN882X_ARD,  # LibreTiny LN882x
     Platform.RP2040_ARD,  # Raspberry Pi Pico
-    Platform.NRF52_ZEPHYR,  # Nordic nRF52 (Zephyr)
 ]
 
 
@@ -418,8 +411,6 @@ def _detect_platform_hint_from_filename(filename: str) -> Platform | None:
     - wifi_component_esp8266.cpp, *_esp8266.h -> ESP8266_ARD
     - *_esp32*.cpp -> ESP32 IDF (generic)
     - *_libretiny.cpp, *_bk72*.* -> BK72XX (LibreTiny)
-    - *_rtl87*.* -> RTL87XX (LibreTiny Realtek)
-    - *_ln882*.* -> LN882X (LibreTiny Lightning)
     - *_pico.cpp, *_rp2040.* -> RP2040_ARD
 
     Args:
@@ -453,12 +444,7 @@ def _detect_platform_hint_from_filename(filename: str) -> Platform | None:
     if "esp32" in filename_lower:
         return Platform.ESP32_IDF
 
-    # LibreTiny platforms (check specific variants before generic libretiny)
-    # Check specific variants first to handle paths like libretiny/wifi_rtl87xx.cpp
-    if "rtl87" in filename_lower:
-        return Platform.RTL87XX_ARD
-    if "ln882" in filename_lower:
-        return Platform.LN882X_ARD
+    # LibreTiny (via 'libretiny' pattern or BK72xx-specific files)
     if "libretiny" in filename_lower or "bk72" in filename_lower:
         return Platform.BK72XX_ARD
 
@@ -466,10 +452,6 @@ def _detect_platform_hint_from_filename(filename: str) -> Platform | None:
     if "pico" in filename_lower or "rp2040" in filename_lower:
         return Platform.RP2040_ARD
 
-    # nRF52 / Zephyr
-    if "nrf52" in filename_lower or "zephyr" in filename_lower:
-        return Platform.NRF52_ZEPHYR
-
     return None
 
 

tests/components/debug/common.yaml

@@ -11,8 +11,6 @@ sensor:
   - platform: debug
     free:
       name: "Heap Free"
-    block:
-      name: "Heap Block"
     loop_time:
       name: "Loop Time"
     cpu_frequency:

tests/components/debug/test.bk72xx-ard.yaml

@@ -1,6 +1 @@
 <<: !include common.yaml
-
-sensor:
-  - platform: debug
-    min_free:
-      name: "Heap Min Free"

tests/components/debug/test.esp32-ard.yaml

@@ -2,10 +2,3 @@
 
 esp32:
   cpu_frequency: 240MHz
-
-sensor:
-  - platform: debug
-    fragmentation:
-      name: "Heap Fragmentation"
-    min_free:
-      name: "Heap Min Free"

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

@@ -9,9 +9,5 @@ sensor:
       name: "Heap Free"
     psram:
       name: "Free PSRAM"
-    fragmentation:
-      name: "Heap Fragmentation"
-    min_free:
-      name: "Heap Min Free"
 
 psram:

tests/components/debug/test.esp32-s2-idf.yaml

@@ -1,8 +1 @@
 <<: !include common.yaml
-
-sensor:
-  - platform: debug
-    fragmentation:
-      name: "Heap Fragmentation"
-    min_free:
-      name: "Heap Min Free"

tests/components/debug/test.esp8266-ard.yaml

@@ -1,6 +1 @@
 <<: !include common.yaml
-
-sensor:
-  - platform: debug
-    fragmentation:
-      name: "Heap Fragmentation"

tests/components/debug/test.ln882x-ard.yaml

@@ -1,6 +1 @@
 <<: !include common.yaml
-
-sensor:
-  - platform: debug
-    min_free:
-      name: "Heap Min Free"

tests/components/debug/test.rtl87xx-ard.yaml

@@ -1,6 +0,0 @@
-<<: !include common.yaml
-
-sensor:
-  - platform: debug
-    min_free:
-      name: "Heap Min Free"

tests/script/test_determine_jobs.py

@@ -1472,24 +1472,6 @@ def test_detect_memory_impact_config_runs_at_component_limit(tmp_path: Path) ->
             determine_jobs.Platform.BK72XX_ARD,
         ),
         ("esphome/components/ble/ble_bk72xx.cpp", determine_jobs.Platform.BK72XX_ARD),
-        # RTL87xx (LibreTiny Realtek) detection
-        (
-            "tests/components/logger/test.rtl87xx-ard.yaml",
-            determine_jobs.Platform.RTL87XX_ARD,
-        ),
-        (
-            "esphome/components/libretiny/wifi_rtl87xx.cpp",
-            determine_jobs.Platform.RTL87XX_ARD,
-        ),
-        # LN882x (LibreTiny Lightning) detection
-        (
-            "tests/components/logger/test.ln882x-ard.yaml",
-            determine_jobs.Platform.LN882X_ARD,
-        ),
-        (
-            "esphome/components/libretiny/wifi_ln882x.cpp",
-            determine_jobs.Platform.LN882X_ARD,
-        ),
         # RP2040 / Raspberry Pi Pico detection
         ("esphome/components/gpio/gpio_rp2040.cpp", determine_jobs.Platform.RP2040_ARD),
         ("esphome/components/wifi/wifi_rp2040.cpp", determine_jobs.Platform.RP2040_ARD),
@@ -1499,23 +1481,6 @@ def test_detect_memory_impact_config_runs_at_component_limit(tmp_path: Path) ->
             "tests/components/rp2040/test.rp2040-ard.yaml",
             determine_jobs.Platform.RP2040_ARD,
         ),
-        # nRF52 / Zephyr detection
-        (
-            "tests/components/logger/test.nrf52-adafruit.yaml",
-            determine_jobs.Platform.NRF52_ZEPHYR,
-        ),
-        (
-            "esphome/components/nrf52/gpio.cpp",
-            determine_jobs.Platform.NRF52_ZEPHYR,
-        ),
-        (
-            "esphome/components/zephyr/core.cpp",
-            determine_jobs.Platform.NRF52_ZEPHYR,
-        ),
-        (
-            "esphome/components/zephyr_ble_server/ble_server.cpp",
-            determine_jobs.Platform.NRF52_ZEPHYR,
-        ),
         # No platform hint (generic files)
         ("esphome/components/wifi/wifi.cpp", None),
         ("esphome/components/sensor/sensor.h", None),
@@ -1536,19 +1501,11 @@ def test_detect_memory_impact_config_runs_at_component_limit(tmp_path: Path) ->
         "esp32_in_name",
         "libretiny",
         "bk72xx",
-        "rtl87xx_test_yaml",
-        "rtl87xx_wifi",
-        "ln882x_test_yaml",
-        "ln882x_wifi",
         "rp2040_gpio",
         "rp2040_wifi",
         "pico_i2c",
         "pico_spi",
         "rp2040_test_yaml",
-        "nrf52_test_yaml",
-        "nrf52_gpio",
-        "zephyr_core",
-        "zephyr_ble_server",
         "generic_wifi_no_hint",
         "generic_sensor_no_hint",
         "core_helpers_no_hint",
@@ -1575,11 +1532,6 @@ def test_detect_platform_hint_from_filename(
         ("file_ESP8266.cpp", determine_jobs.Platform.ESP8266_ARD),
         # ESP32 with different cases
         ("file_ESP32.cpp", determine_jobs.Platform.ESP32_IDF),
-        # nRF52/Zephyr with different cases
-        ("file_NRF52.cpp", determine_jobs.Platform.NRF52_ZEPHYR),
-        ("file_Nrf52.cpp", determine_jobs.Platform.NRF52_ZEPHYR),
-        ("file_ZEPHYR.cpp", determine_jobs.Platform.NRF52_ZEPHYR),
-        ("file_Zephyr.cpp", determine_jobs.Platform.NRF52_ZEPHYR),
     ],
     ids=[
         "rp2040_uppercase",
@@ -1588,10 +1540,6 @@ def test_detect_platform_hint_from_filename(
         "pico_titlecase",
         "esp8266_uppercase",
         "esp32_uppercase",
-        "nrf52_uppercase",
-        "nrf52_mixedcase",
-        "zephyr_uppercase",
-        "zephyr_titlecase",
     ],
 )
 def test_detect_platform_hint_from_filename_case_insensitive(