From 57f4067fbf425c4a456b928e2ee97cc5d28e4a6b Mon Sep 17 00:00:00 2001
From: Daniel Vikstrom <daniel.vikstrom@astek.net>
Date: Mon, 2 Jun 2025 14:42:39 +0200
Subject: [PATCH] Move fnv1a_32bit_hash to helpers

---
 esphome/core/config.py | 16 ++++++----------
 esphome/cpp_helpers.py |  4 ++--
 esphome/helpers.py     |  9 +++++++++
 3 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/esphome/core/config.py b/esphome/core/config.py
index d27ec1d6bf..22bb7b0472 100644
--- a/esphome/core/config.py
+++ b/esphome/core/config.py
@@ -34,7 +34,12 @@ from esphome.const import (
     __version__ as ESPHOME_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority
-from esphome.helpers import copy_file_if_changed, get_str_env, walk_files
+from esphome.helpers import (
+    copy_file_if_changed,
+    fnv1a_32bit_hash,
+    get_str_env,
+    walk_files,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -340,15 +345,6 @@ async def _add_automations(config):
         await automation.build_automation(trigger, [], conf)
 
 
-def fnv1a_32bit_hash(string: str) -> int:
-    """FNV-1a 32-bit hash function."""
-    hash_value = 2166136261
-    for char in string:
-        hash_value ^= ord(char)
-        hash_value = (hash_value * 16777619) & 0xFFFFFFFF
-    return hash_value
-
-
 @coroutine_with_priority(100.0)
 async def to_code(config):
     cg.add_global(cg.global_ns.namespace("esphome").using)
diff --git a/esphome/cpp_helpers.py b/esphome/cpp_helpers.py
index 7a8ad060e4..66ff58f4a7 100644
--- a/esphome/cpp_helpers.py
+++ b/esphome/cpp_helpers.py
@@ -13,11 +13,11 @@ from esphome.const import (
     CONF_UPDATE_INTERVAL,
     KEY_PAST_SAFE_MODE,
 )
-from esphome.core import CORE, ID, coroutine, fnv1a_32bit_hash
+from esphome.core import CORE, ID, coroutine
 from esphome.coroutine import FakeAwaitable
 from esphome.cpp_generator import add, get_variable
 from esphome.cpp_types import App
-from esphome.helpers import sanitize, snake_case
+from esphome.helpers import fnv1a_32bit_hash, sanitize, snake_case
 from esphome.types import ConfigFragmentType, ConfigType
 from esphome.util import Registry, RegistryEntry
 
diff --git a/esphome/helpers.py b/esphome/helpers.py
index d95546ac94..242c05e892 100644
--- a/esphome/helpers.py
+++ b/esphome/helpers.py
@@ -29,6 +29,15 @@ def ensure_unique_string(preferred_string, current_strings):
     return test_string
 
 
+def fnv1a_32bit_hash(string: str) -> int:
+    """FNV-1a 32-bit hash function."""
+    hash_value = 2166136261
+    for char in string:
+        hash_value ^= ord(char)
+        hash_value = (hash_value * 16777619) & 0xFFFFFFFF
+    return hash_value
+
+
 def indent_all_but_first_and_last(text, padding="  "):
     lines = text.splitlines(True)
     if len(lines) <= 2: