Added ability to write configuration on SD

MarlinKimbra/ConfigurationStore.h

@@ -4,11 +4,14 @@
 #include "Configuration.h"
 
 void Config_ResetDefault();
+void ConfigSD_ResetDefault();
 
 #ifndef DISABLE_M503
   void Config_PrintSettings(bool forReplay=false);
+  void ConfigSD_PrintSettings(bool forReplay=false);
 #else
   FORCE_INLINE void Config_PrintSettings(bool forReplay=false) {}
+  FORCE_INLINE void ConfigSD_PrintSettings(bool forReplay=false) {}
 #endif
 
 #ifdef EEPROM_SETTINGS
@@ -19,4 +22,27 @@ void Config_ResetDefault();
   FORCE_INLINE void Config_RetrieveSettings() { Config_ResetDefault(); Config_PrintSettings(); }
 #endif
 
+#if defined(SDSUPPORT) && defined(SD_SETTINGS)
+  static const char *cfgSD_KEY[] = { //Keep this in lexicographical order for better search performance(O(Nlog2(N)) insted of O(N*N)) (if you don't keep this sorted, the algorithm for find the key index won't work, keep attention.)
+    #ifdef POWER_CONSUMPTION
+      "PWR",
+    #endif
+    "TME",
+  };
+  
+  enum cfgSD_ENUM {	//This need to be in the same order as cfgSD_KEY
+    #ifdef POWER_CONSUMPTION
+      SD_CFG_PWR,
+    #endif
+    SD_CFG_TME,
+    SD_CFG_END //Leave this always as the last
+  };
+  
+  void ConfigSD_StoreSettings();
+  void ConfigSD_RetrieveSettings(bool addValue = false);
+  int ConfigSD_KeyIndex(char *key);
+#else
+  FORCE_INLINE void ConfigSD_RetrieveSettings() {  ConfigSD_ResetDefault(); ConfigSD_PrintSettings();  }
+#endif
+
 #endif //CONFIGURATIONSTORE_H