Export setting to file

Marlin/Configuration_adv.h

@@ -1,3 +1,4 @@
+
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
@@ -4528,3 +4529,11 @@
 
 // Shrink the build for smaller boards by sacrificing some serial feedback
 //#define MARLIN_SMALL_BUILD
+
+#if ALL(HAS_MEDIA, HAS_MARLINUI_MENU)
+  //#define EXPORT_SETTINGS // Export memory settings to file M503.gc in SD card root for replay
+#endif
+
+#if ENABLED(EXPORT_SETTINGS)
+  #define SERIAL_2_FILE   // Dump serial output to file, needed for export settings
+#endif

Marlin/src/core/serial.cpp

@@ -144,3 +144,29 @@ void print_xyze(LOGICAL_AXIS_ARGS_(const_float_t) FSTR_P const prefix/*=nullptr*
   #endif
   if (suffix) SERIAL_ECHO(suffix); else SERIAL_EOL();
 }
+
+#if ENABLED(SERIAL_2_FILE)
+  #include <src/sd/SdFile.h>
+  #include <src/sd/cardreader.h>
+
+  MediaFile sr_dump_file;
+  size_t sr_write_res;
+
+  bool sr_file_open(const char * filename)
+  {
+    sr_write_res = 0;
+    MediaFile root = card.getroot();
+    return sr_dump_file.open(&root, filename, O_CREAT | O_WRITE | O_TRUNC);
+  }
+
+  void serial2file(uint8_t c)
+  {
+    if (sr_dump_file.isOpen() && sr_write_res != -1)
+      sr_write_res = sr_dump_file.write(c);
+  }
+
+  bool sr_file_close()
+  {
+    return sr_dump_file.close();
+  }
+#endif

Marlin/src/core/serial.h

@@ -250,6 +250,10 @@ inline void print_xyze(const xyze_pos_t &xyze, FSTR_P const prefix=nullptr, FSTR
   print_xyze(LOGICAL_AXIS_ELEM_(xyze) prefix, suffix);
 }
 
+bool sr_file_open(const char * filename);
+bool sr_file_close();
+extern size_t sr_write_res;
+
 #define SERIAL_POS(SUFFIX,VAR) do { print_xyz(VAR, F("  " STRINGIFY(VAR) "="), F(" : " SUFFIX "\n")); }while(0)
 #define SERIAL_XYZ(PREFIX,V...) do { print_xyz(V, F(PREFIX)); }while(0)
 

Marlin/src/core/serial_hook.h

@@ -200,6 +200,8 @@ struct RuntimeSerial : public SerialBase< RuntimeSerial<SerialT> >, public Seria
 #define _S_CLASS(N) class Serial##N##T,
 #define _S_NAME(N) Serial##N##T,
 
+void serial2file(uint8_t c);
+
 template < REPEAT(NUM_SERIAL, _S_CLASS) const uint8_t offset=0, const uint8_t step=1 >
 struct MultiSerial : public SerialBase< MultiSerial< REPEAT(NUM_SERIAL, _S_NAME) offset, step > > {
   typedef SerialBase< MultiSerial< REPEAT(NUM_SERIAL, _S_NAME) offset, step > > BaseClassT;
@@ -227,6 +229,9 @@ struct MultiSerial : public SerialBase< MultiSerial< REPEAT(NUM_SERIAL, _S_NAME)
     #define _S_WRITE(N) if (portMask.enabled(output[N])) serial##N.write(c);
     REPEAT(NUM_SERIAL, _S_WRITE);
     #undef _S_WRITE
+    #if ENABLED(SERIAL_2_FILE)
+      serial2file(c);
+    #endif
   }
   NO_INLINE void msgDone() {
     #define _S_DONE(N) if (portMask.enabled(output[N])) serial##N.msgDone();

Marlin/src/inc/Conditionals_LCD.h

@@ -1883,4 +1883,4 @@
 
 #if ALL(SPI_FLASH, HAS_MEDIA, MARLIN_DEV_MODE)
   #define SPI_FLASH_BACKUP 1
-#endif
+#endif

Marlin/src/inc/SanityCheck.h

@@ -2614,6 +2614,8 @@ static_assert(NUM_SERVOS <= NUM_SERVO_PLUGS, "NUM_SERVOS (or some servo index) i
     #error "Either disable SDCARD_READONLY or disable BINARY_FILE_TRANSFER."
   #elif ENABLED(SDCARD_EEPROM_EMULATION)
     #error "Either disable SDCARD_READONLY or disable SDCARD_EEPROM_EMULATION."
+  #elif ENABLED(EXPORT_SETTINGS)
+    #error "Either disable SDCARD_READONLY or disable EXPORT_SETTINGS."
   #endif
 #endif
 

Marlin/src/lcd/language/language_en.h

@@ -470,6 +470,7 @@ namespace LanguageNarrow_en {
   LSTR MSG_LOAD_EEPROM                    = _UxGT("Load Settings");
   LSTR MSG_RESTORE_DEFAULTS               = _UxGT("Restore Defaults");
   LSTR MSG_INIT_EEPROM                    = _UxGT("Initialize EEPROM");
+  LSTR MSG_EXPORT_SETTINGS                = _UxGT("Export Settings");
   LSTR MSG_ERR_EEPROM_CRC                 = _UxGT("Err: EEPROM CRC");
   LSTR MSG_ERR_EEPROM_SIZE                = _UxGT("Err: EEPROM Size");
   LSTR MSG_ERR_EEPROM_VERSION             = _UxGT("Err: EEPROM Version");

Marlin/src/lcd/marlinui.cpp

@@ -1882,6 +1882,16 @@ void MarlinUI::host_notify(const char * const cstr) {
       zoffset_overlay(dir);
     }
   #endif
+#if ENABLED(EXPORT_SETTINGS)
+  void MarlinUI::export_settings() {
+    if (sr_file_open("M503.gc")) {
+      settings.report(true);
+      completion_feedback(sr_file_close() && sr_write_res != -1);
+    } else
+      completion_feedback(false);
+  }
+#endif
+
 
 #endif
 

Marlin/src/lcd/marlinui.h

@@ -780,6 +780,10 @@ class MarlinUI {
     static void eeprom_alert(const EEPROM_Error) TERN_(EEPROM_AUTO_INIT, {});
   #endif
 
+  #if ENABLED(EXPORT_SETTINGS)
+    static void export_settings();
+  #endif
+
   //
   // Special handling if a move is underway
   //

Marlin/src/lcd/menu/menu_advanced.cpp

@@ -792,6 +792,10 @@ void menu_advanced_settings() {
     );
   #endif
 
+  #if ENABLED(EXPORT_SETTINGS)
+    ACTION_ITEM(MSG_EXPORT_SETTINGS, ui.export_settings);
+  #endif
+
   END_MENU();
 }