From 97115d56f9aa2291ea8c968b9934b42e58232cc6 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Fri, 28 Oct 2016 18:53:48 -0500
Subject: [PATCH] Print error for M500 with disabled EEPROM

---
 Marlin/configuration_store.cpp | 9 ++++++++-
 Marlin/configuration_store.h   | 3 +--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/Marlin/configuration_store.cpp b/Marlin/configuration_store.cpp
index 2150d0128..8e97a6900 100644
--- a/Marlin/configuration_store.cpp
+++ b/Marlin/configuration_store.cpp
@@ -565,7 +565,14 @@ void Config_RetrieveSettings() {
   #endif
 }
 
-#endif // EEPROM_SETTINGS
+#else // !EEPROM_SETTINGS
+
+  void Config_StoreSettings() {
+    SERIAL_ERROR_START;
+    SERIAL_ERRORLNPGM("EEPROM disabled");
+  }
+
+#endif // !EEPROM_SETTINGS
 
 /**
  * M502 - Reset Configuration
diff --git a/Marlin/configuration_store.h b/Marlin/configuration_store.h
index 891f19fb9..7279dc4d5 100644
--- a/Marlin/configuration_store.h
+++ b/Marlin/configuration_store.h
@@ -26,6 +26,7 @@
 #include "MarlinConfig.h"
 
 void Config_ResetDefault();
+void Config_StoreSettings();
 
 #if DISABLED(DISABLE_M503)
   void Config_PrintSettings(bool forReplay=false);
@@ -34,10 +35,8 @@ void Config_ResetDefault();
 #endif
 
 #if ENABLED(EEPROM_SETTINGS)
-  void Config_StoreSettings();
   void Config_RetrieveSettings();
 #else
-  FORCE_INLINE void Config_StoreSettings() {}
   FORCE_INLINE void Config_RetrieveSettings() { Config_ResetDefault(); Config_PrintSettings(); }
 #endif