From 70de65d2e0400a858385cbd541dfdf12ca03c230 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cornelius=20K=C3=B6pp?=
 <121643070+cornelius-koepp@users.noreply.github.com>
Date: Sat, 23 Aug 2025 13:52:52 +0200
Subject: [PATCH] Fix: Special Case Handling for Unload-Timeout

`_savedTimeout==0` is defined as no timeout running. Prevent this rare case.
---
 src/knx/memory.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/knx/memory.cpp b/src/knx/memory.cpp
index fe08a92..2963f4e 100644
--- a/src/knx/memory.cpp
+++ b/src/knx/memory.cpp
@@ -302,6 +302,8 @@ void Memory::freeMemory(uint8_t* ptr)
     removeFromUsedList(block);
     addToFreeList(block);
     _saveTimeout = millis();
+    if (_saveTimeout == 0)
+        _saveTimeout = 1; // prevent 0=disabled; no impact by minimal increased timeout
 }
 
 void Memory::writeMemory(uint32_t relativeAddress, size_t size, uint8_t* data)
@@ -309,6 +311,8 @@ void Memory::writeMemory(uint32_t relativeAddress, size_t size, uint8_t* data)
     if(_saveTimeout != 0)
     {
         _saveTimeout = millis();
+        if (_saveTimeout == 0)
+            _saveTimeout = 1; // prevent 0=disabled; no impact by minimal increased timeout
     }
     _platform.writeNonVolatileMemory(relativeAddress, data, size);
 }