From f5774cc1384fd3ec79b750b49e9a0e9b34a36cac Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Fri, 17 Oct 2025 08:20:31 -1000
Subject: [PATCH] [debug] Replace std::map with struct array for ESP32 chip
 features (#11307)

---
 esphome/components/debug/debug_esp32.cpp | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/esphome/components/debug/debug_esp32.cpp b/esphome/components/debug/debug_esp32.cpp
index b1dfe1bc9a..1c3dc3699b 100644
--- a/esphome/components/debug/debug_esp32.cpp
+++ b/esphome/components/debug/debug_esp32.cpp
@@ -11,8 +11,6 @@
 #include <esp_chip_info.h>
 #include <esp_partition.h>
 
-#include <map>
-
 #ifdef USE_ARDUINO
 #include <Esp.h>
 #endif
@@ -125,7 +123,12 @@ void DebugComponent::log_partition_info_() {
 
 uint32_t DebugComponent::get_free_heap_() { return heap_caps_get_free_size(MALLOC_CAP_INTERNAL); }
 
-static const std::map<int, const char *> CHIP_FEATURES = {
+struct ChipFeature {
+  int bit;
+  const char *name;
+};
+
+static constexpr ChipFeature CHIP_FEATURES[] = {
     {CHIP_FEATURE_BLE, "BLE"},
     {CHIP_FEATURE_BT, "BT"},
     {CHIP_FEATURE_EMB_FLASH, "EMB Flash"},
@@ -170,11 +173,13 @@ void DebugComponent::get_device_info_(std::string &device_info) {
   esp_chip_info(&info);
   const char *model = ESPHOME_VARIANT;
   std::string features;
-  for (auto feature : CHIP_FEATURES) {
-    if (info.features & feature.first) {
-      features += feature.second;
+
+  // Check each known feature bit
+  for (const auto &feature : CHIP_FEATURES) {
+    if (info.features & feature.bit) {
+      features += feature.name;
       features += ", ";
-      info.features &= ~feature.first;
+      info.features &= ~feature.bit;
     }
   }
   if (info.features != 0)