From 36b3d35d1591728ce9c147bcdecadb54bf1acc09 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sat, 4 Apr 2026 11:58:33 -1000
Subject: [PATCH] Fix Zephyr build: add fallback wakeable_delay and
 wake_loop_threadsafe

---
 esphome/core/wake.h | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/esphome/core/wake.h b/esphome/core/wake.h
index 961edf5adb..fe49038d65 100644
--- a/esphome/core/wake.h
+++ b/esphome/core/wake.h
@@ -94,14 +94,29 @@ namespace internal {
 void wakeable_delay(uint32_t ms);
 }  // namespace internal
 
-// === Host (UDP loopback socket) ===
+// === Host / Zephyr / other ===
 #else
 
-/// Defined in wake.cpp.
+#ifdef USE_HOST
+/// Host: wakes select() via UDP loopback socket. Defined in wake.cpp.
 void wake_loop_threadsafe();
+#else
+/// Fallback for platforms without a specific wake mechanism.
+inline void wake_loop_threadsafe() {}
+#endif
 
 inline void wake_loop_any_context() { wake_loop_threadsafe(); }
 
+namespace internal {
+inline void wakeable_delay(uint32_t ms) {
+  if (ms == 0) {
+    yield();
+    return;
+  }
+  delay(ms);
+}
+}  // namespace internal
+
 #endif
 
 }  // namespace esphome