From 9cd20cd56b94972a073020027da0d097482f07fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kai=20B=C3=B6rnert?= <kai.boernert@pgt.de>
Date: Tue, 28 Apr 2026 16:34:57 +0200
Subject: [PATCH] Send MQTT "stay_alive" message before deep sleep; add delay
 to ensure message delivery.

---
 Software/MainBoard/rust/src/main.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Software/MainBoard/rust/src/main.rs b/Software/MainBoard/rust/src/main.rs
index 7438d1b..6c36522 100644
--- a/Software/MainBoard/rust/src/main.rs
+++ b/Software/MainBoard/rust/src/main.rs
@@ -1251,14 +1251,15 @@ async fn wait_infinity(
             info!("Rebooting now");
             //ensure clean http answer
             Timer::after_millis(500).await;
-            BOARD_ACCESS
+            let mut board = BOARD_ACCESS
                 .get()
                 .await
                 .lock()
-                .await
-                .board_hal
-                .deep_sleep(0)
                 .await;
+            board.board_hal.get_esp().mqtt_publish("/stay_alive", "0").await;
+            //give time to mqtt to send the last message
+            Timer::after_millis(500).await;
+            board.board_hal.deep_sleep(0).await;
         }
     }
 }