Initial conflict resolution of SD_REPRINT_LAST_SELECTED_FILE (#8104)

* Initial conflict resolution

All previous items resolved:
- Use of ELAPSED() on timer code
- Switch to use of defer_return_to_status=true as much as possible
- Update & Clean Up of Max7219 routines

* Resolve non-SD case in ultralcd.cpp

Marlin/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/Max7219_Debug_LEDs.cpp

@@ -39,12 +39,14 @@
  * void Max7219_init();
  * void Max7219_PutByte(uint8_t data);
  * void Max7219(uint8_t reg, uint8_t data);
- * void Max7219_LED_On(uint8_t row, uint8_t col);
+ * void Max7219_LED_On(uint8_t col, uint8_t row);
- * void Max7219_LED_Off(uint8_t row, uint8_t col);
+ * void Max7219_LED_Off(uint8_t col, uint8_t row);
- * void Max7219_LED_Toggle(uint8_t row, uint8_t col);
+ * void Max7219_LED_Toggle(uint8_t col, uint8_t row);
  * void Max7219_Clear_Row(uint8_t row);
  * void Max7219_Clear_Column(uint8_t col);
  * void Max7219_Set_Row(uint8_t row, uint8_t val);
+ * void Max7219_Set_2_Rows(uint8_t row, uint16_t val);
+ * void Max7219_Set_4_Rows(uint8_t row, uint32_t val);
  * void Max7219_Set_Column(uint8_t col, uint8_t val);
  * void Max7219_idle_tasks();
  */
@@ -53,67 +55,155 @@
 
 #if ENABLED(MAX7219_DEBUG)
 
-  #include "Marlin.h"
+#include "Max7219_Debug_LEDs.h"
+
 #include "planner.h"
 #include "stepper.h"
-  #include "Max7219_Debug_LEDs.h"
+#include "Marlin.h"
 
 static uint8_t LEDs[8] = { 0 };
 
 void Max7219_PutByte(uint8_t data) {
+  CRITICAL_SECTION_START
   for (uint8_t i = 8; i--;) {
+    #ifdef CPU_32_BIT                    // The 32-bit processors are so fast, a small delay in the code is needed
+      delayMicroseconds(5);              // to let the signal wires stabilize.
       WRITE(MAX7219_CLK_PIN, LOW);       // tick
+      delayMicroseconds(5);
       WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW);  // send 1 or 0 based on data bit
+      delayMicroseconds(5);
       WRITE(MAX7219_CLK_PIN, HIGH);      // tock
+      delayMicroseconds(5);
+    #else
+      WRITE(MAX7219_CLK_PIN, LOW);       // tick
+      WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW);  // send 1 or 0 based on data bit
+      WRITE(MAX7219_CLK_PIN, HIGH);      // tock
+    #endif
+
     data <<= 1;
   }
+  CRITICAL_SECTION_END
 }
 
 void Max7219(const uint8_t reg, const uint8_t data) {
+  #ifdef CPU_32_BIT
+    delayMicroseconds(5);
+  #endif
+  CRITICAL_SECTION_START
   WRITE(MAX7219_LOAD_PIN, LOW);  // begin
+  #ifdef CPU_32_BIT              // The 32-bit processors are so fast, a small delay in the code is needed
+    delayMicroseconds(5);        // to let the signal wires stabilize.
+  #endif
   Max7219_PutByte(reg);          // specify register
+  #ifdef CPU_32_BIT
+    delayMicroseconds(5);
+  #endif
   Max7219_PutByte(data);         // put data
+  #ifdef CPU_32_BIT
+    delayMicroseconds(5);
+  #endif
   WRITE(MAX7219_LOAD_PIN, LOW);  // and tell the chip to load the data
+  #ifdef CPU_32_BIT
+    delayMicroseconds(5);
+  #endif
   WRITE(MAX7219_LOAD_PIN, HIGH);
+  CRITICAL_SECTION_END
+  #ifdef CPU_32_BIT
+    delayMicroseconds(5);
+  #endif
 }
 
 void Max7219_LED_Set(const uint8_t row, const uint8_t col, const bool on) {
-    if (row > 7 || col > 7) return;
+  if (row > 7 || col > 7) {
+    int r,c;
+    r = row;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_LED_Set(",r);
+    SERIAL_ECHOPAIR(",",c);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   if (TEST(LEDs[row], col) == on) return; // if LED is already on/off, leave alone
   if (on) SBI(LEDs[row], col); else CBI(LEDs[row], col);
   Max7219(8 - row, LEDs[row]);
 }
 
-  void Max7219_LED_On(const uint8_t row, const uint8_t col) {
+void Max7219_LED_On(const uint8_t col, const uint8_t row) {
-    Max7219_LED_Set(row, col, true);
+  if (row > 7 || col > 7) {
+    int r,c;
+    r = row;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_LED_On(",c);
+    SERIAL_ECHOPAIR(",",r);
+    SERIAL_ECHO(")\n");
+    return;
+  }
+  Max7219_LED_Set(col, row, true);
 }
 
-  void Max7219_LED_Off(const uint8_t row, const uint8_t col) {
+void Max7219_LED_Off(const uint8_t col, const uint8_t row) {
-    Max7219_LED_Set(row, col, false);
+  if (row > 7 || col > 7) {
+    int r,c;
+    r = row;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_LED_Off(",r);
+    SERIAL_ECHOPAIR(",",c);
+    SERIAL_ECHO(")\n");
+    return;
+  }
+  Max7219_LED_Set(col, row, false);
 }
 
-  void Max7219_LED_Toggle(const uint8_t row, const uint8_t col) {
+void Max7219_LED_Toggle(const uint8_t col, const uint8_t row) {
-    if (row > 7 || col > 7) return;
+  if (row > 7 || col > 7) {
+    int r,c;
+    r = row;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_LED_Toggle(",r);
+    SERIAL_ECHOPAIR(",",c);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   if (TEST(LEDs[row], col))
-      Max7219_LED_Off(row, col);
+    Max7219_LED_Off(col, row);
   else
-      Max7219_LED_On(row, col);
+    Max7219_LED_On(col, row);
 }
 
 void Max7219_Clear_Column(const uint8_t col) {
-    if (col > 7) return;
+  if (col > 7) {
+    int c;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_Clear_Column(",c);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   LEDs[col] = 0;
   Max7219(8 - col, LEDs[col]);
 }
 
 void Max7219_Clear_Row(const uint8_t row) {
-    if (row > 7) return;
+  if (row > 7) {
+    int r;
+    r = row;
+    SERIAL_ECHOPAIR("??? Max7219_Clear_Row(",r);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   for (uint8_t c = 0; c <= 7; c++)
     Max7219_LED_Off(c, row);
 }
 
 void Max7219_Set_Row(const uint8_t row, const uint8_t val) {
-    if (row > 7) return;
+  if (row > 7 || val>255) {
+    int r, v;
+    r = row;
+    v = val;
+    SERIAL_ECHOPAIR("??? Max7219_Set_Row(",r);
+    SERIAL_ECHOPAIR(",",v);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   for (uint8_t b = 0; b <= 7; b++)
     if (TEST(val, b))
       Max7219_LED_On(7 - b, row);
@@ -121,8 +211,47 @@
       Max7219_LED_Off(7 - b, row);
 }
 
+void Max7219_Set_2_Rows(const uint8_t row, const uint16_t val) {
+  if (row > 6 || val>65535) {
+    int r, v;
+    r = row;
+    v = val;
+    SERIAL_ECHOPAIR("??? Max7219_Set_2_Rows(",r);
+    SERIAL_ECHOPAIR(",",v);
+    SERIAL_ECHO(")\n");
+    return;
+  }
+  Max7219_Set_Row(row+1, (val & 0xff00) >> 8 );
+  Max7219_Set_Row(row+0, (val & 0xff));
+}
+
+void Max7219_Set_4_Rows(const uint8_t row, const uint32_t val) {
+  if (row > 4 ) {
+    int r;
+    long v;
+    r = row;
+    v = val;
+    SERIAL_ECHOPAIR("??? Max7219_Set_4_Rows(",r);
+    SERIAL_ECHOPAIR(",",v);
+    SERIAL_ECHO(")\n");
+    return;
+  }
+  Max7219_Set_Row(row+3, (val & 0xff000000) >> 24);
+  Max7219_Set_Row(row+2, (val & 0xff0000) >> 16);
+  Max7219_Set_Row(row+1, (val & 0xff00) >> 8);
+  Max7219_Set_Row(row+0, (val & 0xff));
+}
+
 void Max7219_Set_Column(const uint8_t col, const uint8_t val) {
-    if (col > 7) return;
+  if (val > 255 || col > 7) {
+    int v,c;
+    v = val;
+    c = col;
+    SERIAL_ECHOPAIR("??? Max7219_Column(",c);
+    SERIAL_ECHOPAIR(",",v);
+    SERIAL_ECHO(")\n");
+    return;
+  }
   LEDs[col] = val;
   Max7219(8 - col, LEDs[col]);
 }
@@ -134,6 +263,7 @@
   SET_OUTPUT(MAX7219_CLK_PIN);
 
   OUT_WRITE(MAX7219_LOAD_PIN, HIGH);
+  delay(1);
 
   //initiation of the max 7219
   Max7219(max7219_reg_scanLimit, 0x07);
@@ -184,35 +314,63 @@
 * or clear a row is not very significant.
 */
 void Max7219_idle_tasks() {
+#if MAX7219_DEBUG_STEPPER_HEAD || MAX7219_DEBUG_STEPPER_TAIL || MAX7219_DEBUG_STEPPER_QUEUE
+  CRITICAL_SECTION_START
+  #if MAX7219_DEBUG_STEPPER_HEAD || MAX7219_DEBUG_STEPPER_QUEUE
+    uint8_t head;
+    head = planner.block_buffer_head;
+  #endif
+  #if MAX7219_DEBUG_STEPPER_TAIL || MAX7219_DEBUG_STEPPER_QUEUE
+    uint8_t tail;
+    tail = planner.block_buffer_tail;
+  #endif
+  CRITICAL_SECTION_END
+#endif
+
   #if ENABLED(MAX7219_DEBUG_PRINTER_ALIVE)
-      static int debug_cnt = 0;
+    static millis_t next_blink = 0;
-      if (debug_cnt++ > 100) {
+
+    if (ELAPSED(millis(), next_blink)) {
         Max7219_LED_Toggle(7, 7);
-        debug_cnt = 0;
+        next_blink = millis() + 750;
     }
   #endif
 
   #ifdef MAX7219_DEBUG_STEPPER_HEAD
-      Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD);
+    static int16_t last_head_cnt=0;
-      Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_HEAD + 1);
+    if (last_head_cnt != head) {
-      if ( planner.block_buffer_head < 8)
+      if ( last_head_cnt < 8)
-        Max7219_LED_On( planner.block_buffer_head, MAX7219_DEBUG_STEPPER_HEAD);
+        Max7219_LED_Off( last_head_cnt, MAX7219_DEBUG_STEPPER_HEAD);
+      else
+        Max7219_LED_Off( last_head_cnt-8, MAX7219_DEBUG_STEPPER_HEAD+1);
+
+      last_head_cnt = head;
+      if ( head < 8)
+        Max7219_LED_On(head, MAX7219_DEBUG_STEPPER_HEAD);
       else
-        Max7219_LED_On( planner.block_buffer_head-8, MAX7219_DEBUG_STEPPER_HEAD+1);
+        Max7219_LED_On(head-8, MAX7219_DEBUG_STEPPER_HEAD+1);
+    }
   #endif
 
   #ifdef MAX7219_DEBUG_STEPPER_TAIL
-      Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL);
+    static int16_t last_tail_cnt=0;
-      Max7219_Clear_Row(MAX7219_DEBUG_STEPPER_TAIL + 1);
+    if (last_tail_cnt != tail) {
-      if ( planner.block_buffer_tail < 8)
+      if ( last_tail_cnt < 8)
-        Max7219_LED_On( planner.block_buffer_tail, MAX7219_DEBUG_STEPPER_TAIL );
+        Max7219_LED_Off( last_tail_cnt, MAX7219_DEBUG_STEPPER_TAIL);
       else
-        Max7219_LED_On( planner.block_buffer_tail-8, MAX7219_DEBUG_STEPPER_TAIL+1 );
+        Max7219_LED_Off( last_tail_cnt-8, MAX7219_DEBUG_STEPPER_TAIL+1);
+
+      last_tail_cnt = tail;
+      if ( tail < 8)
+        Max7219_LED_On(tail, MAX7219_DEBUG_STEPPER_TAIL);
+      else
+        Max7219_LED_On(tail-8, MAX7219_DEBUG_STEPPER_TAIL+1);
+    }
   #endif
 
   #ifdef MAX7219_DEBUG_STEPPER_QUEUE
     static int16_t last_depth = 0;
-      int16_t current_depth = planner.block_buffer_head - planner.block_buffer_tail;
+    int16_t current_depth = head - tail;
     if (current_depth != last_depth) {  // usually, no update will be needed.
       if (current_depth < 0) current_depth += BLOCK_BUFFER_SIZE;
       NOMORE(current_depth, BLOCK_BUFFER_SIZE);
@@ -223,10 +381,10 @@
                     en = max(current_depth, last_depth);
       if (current_depth < last_depth)
         for (uint8_t i = st; i <= en; i++)   // clear the highest order LEDs
-            Max7219_LED_Off(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
+            Max7219_LED_Off(i/2, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
       else
-          for (uint8_t i = st; i <= en; i++)   // set the highest order LEDs
+          for (uint8_t i = st; i <= en; i++)   // set the LEDs to current depth
-            Max7219_LED_On(i >> 1, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
+            Max7219_LED_On(i/2, MAX7219_DEBUG_STEPPER_QUEUE + (i & 1));
 
       last_depth = current_depth;
     }

Marlin/Max7219_Debug_LEDs.h

@@ -40,12 +40,14 @@
  * void Max7219_PutByte(uint8_t data);
  * void Max7219(uint8_t reg, uint8_t data);
  * void Max7219_LED_Set(uint8_t row, uint8_t col, bool on);
- * void Max7219_LED_On(uint8_t row, uint8_t col);
+ * void Max7219_LED_On(uint8_t col, uint8_t row);
- * void Max7219_LED_Off(uint8_t row, uint8_t col);
+ * void Max7219_LED_Off(uint8_t col, uint8_t row);
  * void Max7219_LED_Toggle(uint8_t row, uint8_t col);
  * void Max7219_Clear_Row(uint8_t row);
  * void Max7219_Clear_Column(uint8_t col);
  * void Max7219_Set_Row(uint8_t row, uint8_t val);
+ * void Max7219_Set_2_Rows(uint8_t row, uint16_t val);
+ * void Max7219_Set_4_Rows(uint8_t row, uint32_t val);
  * void Max7219_Set_Column(uint8_t col, uint8_t val);
  * void Max7219_idle_tasks();
  */

Marlin/cardreader.cpp

@@ -860,6 +860,15 @@ void CardReader::updir() {
 
 #endif // SDCARD_SORT_ALPHA
 
+#if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+  typedef void (*screenFunc_t)();
+  extern void lcd_sdcard_menu();
+  extern void lcd_goto_screen(screenFunc_t screen, const uint32_t encoder = 0);
+  extern uint32_t saved_encoderPosition;
+  extern bool screen_changed, drawing_screen, defer_return_to_status;
+  void _lcd_synchronize();  // Not declared in any LCD header file.  Probably, that should be changed.
+#endif
+
 void CardReader::printingHasFinished() {
   stepper.synchronize();
   file.close();
@@ -879,6 +888,18 @@ void CardReader::printingHasFinished() {
     #if ENABLED(SDCARD_SORT_ALPHA)
       presort();
     #endif
+
+    #if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+      lcdDrawUpdate  = LCDVIEW_CALL_REDRAW_NEXT;
+      _lcd_synchronize();
+      safe_delay(50);
+      _lcd_synchronize();
+      lcdDrawUpdate  = LCDVIEW_CALL_REDRAW_NEXT;
+      drawing_screen = screen_changed = true;
+      lcd_goto_screen(lcd_sdcard_menu, saved_encoderPosition);
+      defer_return_to_status = true;
+      lcd_update();
+    #endif
   }
 }
 

Marlin/example_configurations/AlephObjects/TAZ4/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Anet/A6/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Anet/A8/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/BQ/Hephestos/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/BQ/Hephestos_2/Configuration_adv.h

@@ -545,11 +545,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/BQ/WITBOX/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Cartesio/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Creality/CR-10/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/FolgerTech/i3-2020/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Infitary/i3-M508/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Malyan/M150/Configuration_adv.h

@@ -545,11 +545,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Micromake/C1/enhanced/Configuration_adv.h

@@ -549,11 +549,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Sanguinololu/Configuration_adv.h

@@ -537,11 +537,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/TinyBoy2/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Velleman/K8200/Configuration_adv.h

@@ -556,11 +556,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/Velleman/K8400/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -550,11 +550,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -550,11 +550,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -550,11 +550,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -550,11 +550,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -555,11 +555,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -550,11 +550,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/gCreate/gMax1.5+/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/example_configurations/wt150/Configuration_adv.h

@@ -548,11 +548,22 @@
   // Enable this option to scroll long filenames in the SD card menu
   //#define SCROLL_LONG_FILENAMES
 
-  // This option allows you to abort SD printing when any endstop is triggered.
+  /**
-  // This feature must be enabled with "M540 S1" or from the LCD menu.
+   * This option allows you to abort SD printing when any endstop is triggered.
-  // To have any effect, endstops must be enabled during SD printing.
+   * This feature must be enabled with "M540 S1" or from the LCD menu.
+   * To have any effect, endstops must be enabled during SD printing.
+   */
   //#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
 
+  /**
+   * This option allows you to easily reprint the same SD Card file as
+   * was last printed.  At the end of a print, the LCD Menu will jump
+   * straight to the file previously selected.  A single click of the encoder
+   * wheel will restart the print.  Another file or LCD option can be
+   * selected by using the encoder wheel to navigate through the menu structure.
+   */
+  //#define SD_REPRINT_LAST_SELECTED_FILE
+
 #endif // SDSUPPORT
 
 /**

Marlin/ultralcd.cpp

@@ -3752,9 +3752,24 @@ void kill_screen(const char* lcd_msg) {
      * "Print from SD" submenu
      *
      */
+    #if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+      uint32_t saved_encoderPosition = 0;
+      static millis_t assume_print_finished = 0;
+    #endif
+
     void lcd_sdcard_menu() {
       ENCODER_DIRECTION_MENUS();
-      if (!lcdDrawUpdate && !lcd_clicked) return; // nothing to do (so don't thrash the SD card)
+  
+      #if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+        if (ELAPSED(millis(), assume_print_finished)) { // if the printer has been busy printing, lcd_sdcard_menu() should not 
+          lcdDrawUpdate = LCDVIEW_REDRAW_NOW;           // have been active for 5 seconds.  In this case, restore the previous
+          encoderPosition = saved_encoderPosition;      // encoderPosition to the last selected item.
+          assume_print_finished = millis() + 5000;
+        }
+        saved_encoderPosition = encoderPosition;
+        defer_return_to_status = true;
+      #endif
+      
       const uint16_t fileCnt = card.getnrfilenames();
       START_MENU();
       MENU_BACK(MSG_MAIN);
@@ -4403,6 +4418,9 @@ void kill_screen(const char* lcd_msg) {
   #if ENABLED(SDSUPPORT)
 
     void menu_action_sdfile(const char* filename, char* longFilename) {
+      #if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+        saved_encoderPosition = encoderPosition;  // Save which file was selected for later use
+      #endif
       UNUSED(longFilename);
       card.openAndPrintFile(filename);
       lcd_return_to_status();
@@ -4710,7 +4728,11 @@ void lcd_update() {
     uint16_t bbr2 = planner.block_buffer_runtime() >> 1;
 
     #if ENABLED(DOGLCD)
-      if ((lcdDrawUpdate || drawing_screen) && (!bbr2 || (bbr2 > max_display_update_time)))
+      if ((lcdDrawUpdate || drawing_screen) && (!bbr2 || (bbr2 > max_display_update_time)
+      #if ENABLED(SDSUPPORT)
+        || (currentScreen == lcd_sdcard_menu)
+      #endif
+      ))
     #else
       if (lcdDrawUpdate && (!bbr2 || (bbr2 > max_display_update_time)))
     #endif
@@ -4764,7 +4786,12 @@ void lcd_update() {
 
       // Return to Status Screen after a timeout
       if (currentScreen == lcd_status_screen || defer_return_to_status)
+        #if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+          if (currentScreen != lcd_sdcard_menu)                // lcd_sdcard_menu() does not time out if ENABLED(SD_REPRINT_LAST_SELECTED_FILE)
+            return_to_status_ms = ms + LCD_TIMEOUT_TO_STATUS;  // When the printer finishes a file, it will wait with the file selected for 
+        #else                                                  // a re-print.
         return_to_status_ms = ms + LCD_TIMEOUT_TO_STATUS;
+        #endif
       else if (ELAPSED(ms, return_to_status_ms))
         lcd_return_to_status();