From 9c3817f544e7818038d81d1cc65afc7b79fcc700 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Mon, 26 Jan 2026 17:21:17 -1000
Subject: [PATCH] [sml] Use constexpr std::array for START_SEQ constant
 (#13506)

---
 esphome/components/sml/constants.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/esphome/components/sml/constants.h b/esphome/components/sml/constants.h
index d6761d4bb7c..0142fe98f75 100644
--- a/esphome/components/sml/constants.h
+++ b/esphome/components/sml/constants.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 
 namespace esphome {
@@ -21,7 +22,7 @@ enum SmlMessageType : uint16_t { SML_PUBLIC_OPEN_RES = 0x0101, SML_GET_LIST_RES
 const uint16_t START_MASK = 0x55aa;  // 0x1b 1b 1b 1b 01 01 01 01
 const uint16_t END_MASK = 0x0157;    // 0x1b 1b 1b 1b 1a
 
-const std::vector<uint8_t> START_SEQ = {0x1b, 0x1b, 0x1b, 0x1b, 0x01, 0x01, 0x01, 0x01};
+constexpr std::array<uint8_t, 8> START_SEQ = {0x1b, 0x1b, 0x1b, 0x1b, 0x01, 0x01, 0x01, 0x01};
 
 }  // namespace sml
 }  // namespace esphome