Initial commit

2 files changed, 1125 insertions, 0 deletions

diff --git a/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.cpp b/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.cpp
new file mode 100644
index 0000000..1508dc0
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.cpp
@@ -0,0 +1,1028 @@
+/**
+ * anycubic_i3mega_lcd.cpp  --- Support for Anycubic i3 Mega TFT
+ * Created by Christian Hopp on 09.12.17.
+ * Improved by David Ramiro
+ * Converted to ext_iu by John BouAntoun 21 June 2020
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "../../../../inc/MarlinConfigPre.h"
+
+#if ENABLED(ANYCUBIC_LCD_I3MEGA)
+
+#include "anycubic_i3mega_lcd.h"
+#include "../../ui_api.h"
+
+#include "../../../../libs/numtostr.h"
+#include "../../../../module/motion.h"  // for quickstop_stepper, A20 read printing speed, feedrate_percentage
+#include "../../../../MarlinCore.h"     // for disable_steppers
+#include "../../../../inc/MarlinConfig.h"
+
+// command sending macro's with debugging capability
+#define SEND_PGM(x)                                 send_P(PSTR(x))
+#define SENDLINE_PGM(x)                             sendLine_P(PSTR(x))
+#define SEND_PGM_VAL(x,y)                           (send_P(PSTR(x)), sendLine(i16tostr3rj(y)))
+#define SEND(x)                                     send(x)
+#define SENDLINE(x)                                 sendLine(x)
+#if ENABLED(ANYCUBIC_LCD_DEBUG)
+  #define SENDLINE_DBG_PGM(x,y)                     (sendLine_P(PSTR(x)), SERIAL_ECHOLNPGM(y))
+  #define SENDLINE_DBG_PGM_VAL(x,y,z)               (sendLine_P(PSTR(x)), SERIAL_ECHOPGM(y), SERIAL_ECHOLN(z))
+#else
+  #define SENDLINE_DBG_PGM(x,y)                     sendLine_P(PSTR(x))
+  #define SENDLINE_DBG_PGM_VAL(x,y,z)               sendLine_P(PSTR(x))
+#endif
+
+AnycubicTFTClass AnycubicTFT;
+
+static void sendNewLine(void) {
+  LCD_SERIAL.write('\r');
+  LCD_SERIAL.write('\n');
+}
+
+static void send(const char *str) {
+  LCD_SERIAL.print(str);
+}
+
+static void sendLine(const char *str) {
+  send(str);
+  sendNewLine();
+}
+
+static void send_P(PGM_P str) {
+  while (const char c = pgm_read_byte(str++))
+    LCD_SERIAL.write(c);
+}
+
+static void sendLine_P(PGM_P str) {
+  send_P(str);
+  sendNewLine();
+}
+
+AnycubicTFTClass::AnycubicTFTClass() {}
+
+void AnycubicTFTClass::OnSetup() {
+  #ifndef LCD_BAUDRATE
+    #define LCD_BAUDRATE 115200
+  #endif
+  LCD_SERIAL.begin(LCD_BAUDRATE);
+
+  SENDLINE_DBG_PGM("J17", "TFT Serial Debug: Main board reset... J17"); // J17 Main board reset
+  ExtUI::delay_ms(10);
+
+  // initialise the state of the key pins running on the tft
+  #if ENABLED(SDSUPPORT) && PIN_EXISTS(SD_DETECT)
+    SET_INPUT_PULLUP(SD_DETECT_PIN);
+  #endif
+  #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+    SET_INPUT_PULLUP(FIL_RUNOUT1_PIN);
+  #endif
+
+  mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;
+  mediaPauseState = AMPAUSESTATE_NOT_PAUSED;
+
+  // DoSDCardStateCheck();
+  SENDLINE_DBG_PGM("J12", "TFT Serial Debug: Ready... J12"); // J12 Ready
+  ExtUI::delay_ms(10);
+
+  DoFilamentRunoutCheck();
+  SelectedFile[0] = 0;
+
+  #if ENABLED(STARTUP_CHIME)
+    ExtUI::injectCommands_P(PSTR("M300 P250 S554\nM300 P250 S554\nM300 P250 S740\nM300 P250 S554\nM300 P250 S740\nM300 P250 S554\nM300 P500 S831"));
+  #endif
+  #if ENABLED(ANYCUBIC_LCD_DEBUG)
+    SERIAL_ECHOLNPGM("TFT Serial Debug: Finished startup");
+  #endif
+}
+
+void AnycubicTFTClass::OnCommandScan() {
+  static millis_t nextStopCheck = 0; // used to slow the stopped print check down to reasonable times
+  const millis_t ms = millis();
+  if (ELAPSED(ms, nextStopCheck)) {
+    nextStopCheck = ms + 1000UL;
+    if (mediaPrintingState == AMPRINTSTATE_STOP_REQUESTED && IsNozzleHomed()) {
+      #if ENABLED(ANYCUBIC_LCD_DEBUG)
+        SERIAL_ECHOLNPGM("TFT Serial Debug: Finished stopping print, releasing motors ...");
+      #endif
+      mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;
+      mediaPauseState = AMPAUSESTATE_NOT_PAUSED;
+      ExtUI::injectCommands_P(PSTR("M84\nM27")); // disable stepper motors and force report of SD status
+      ExtUI::delay_ms(200);
+      // tell printer to release resources of print to indicate it is done
+      SENDLINE_DBG_PGM("J14", "TFT Serial Debug: SD Print Stopped... J14");
+    }
+  }
+
+  if (TFTbuflen < (TFTBUFSIZE - 1))
+    GetCommandFromTFT();
+
+  if (TFTbuflen) {
+    TFTbuflen  = (TFTbuflen - 1);
+    TFTbufindr = (TFTbufindr + 1) % TFTBUFSIZE;
+  }
+}
+
+void AnycubicTFTClass::OnKillTFT() {
+  SENDLINE_DBG_PGM("J11", "TFT Serial Debug: Kill command... J11");
+}
+
+void AnycubicTFTClass::OnSDCardStateChange(bool isInserted) {
+  #if ENABLED(ANYCUBIC_LCD_DEBUG)
+    SERIAL_ECHOPGM("TFT Serial Debug: OnSDCardStateChange event triggered...");
+    SERIAL_ECHO(ui8tostr2(isInserted));
+    SERIAL_EOL();
+  #endif
+  DoSDCardStateCheck();
+}
+
+void AnycubicTFTClass::OnSDCardError() {
+  #if ENABLED(ANYCUBIC_LCD_DEBUG)
+    SERIAL_ECHOLNPGM("TFT Serial Debug: OnSDCardError event triggered...");
+  #endif
+  SENDLINE_DBG_PGM("J21", "TFT Serial Debug: On SD Card Error ... J21");
+}
+
+void AnycubicTFTClass::OnFilamentRunout() {
+  #if ENABLED(ANYCUBIC_LCD_DEBUG)
+    SERIAL_ECHOLNPGM("TFT Serial Debug: FilamentRunout triggered...");
+  #endif
+  DoFilamentRunoutCheck();
+}
+
+void AnycubicTFTClass::OnUserConfirmRequired(const char * const msg) {
+  #if ENABLED(ANYCUBIC_LCD_DEBUG)
+    SERIAL_ECHOPGM("TFT Serial Debug: OnUserConfirmRequired triggered... ");
+    SERIAL_ECHOLN(msg);
+  #endif
+
+  #if ENABLED(SDSUPPORT)
+    /**
+     * Need to handle the process of following states
+     * "Nozzle Parked"
+     * "Load Filament"
+     * "Filament Purging..."
+     * "HeaterTimeout"
+     * "Reheat finished."
+     *
+     * NOTE:  The only way to handle these states is strcmp_P with the msg unfortunately (very expensive)
+     */
+    if (strcmp_P(msg, PSTR("Nozzle Parked")) == 0) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_PARKED;
+      // enable continue button
+      SENDLINE_DBG_PGM("J18", "TFT Serial Debug: UserConfirm SD print paused done... J18");
+    }
+    else if (strcmp_P(msg, PSTR("Load Filament")) == 0) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_FILAMENT_OUT;
+      // enable continue button
+      SENDLINE_DBG_PGM("J18", "TFT Serial Debug: UserConfirm Filament is out... J18");
+      SENDLINE_DBG_PGM("J23", "TFT Serial Debug: UserConfirm Blocking filament prompt... J23");
+    }
+    else if (strcmp_P(msg, PSTR("Filament Purging...")) == 0) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_PARKING;
+      // TODO: JBA I don't think J05 just disables the continue button, i think it injects a rogue M25. So taking this out
+      // disable continue button
+      // SENDLINE_DBG_PGM("J05", "TFT Serial Debug: UserConfirm SD Filament Purging... J05"); // J05 printing pause
+
+      // enable continue button
+      SENDLINE_DBG_PGM("J18", "TFT Serial Debug: UserConfirm Filament is purging... J18");
+    }
+    else if (strcmp_P(msg, PSTR("HeaterTimeout")) == 0) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_HEATER_TIMEOUT;
+      // enable continue button
+      SENDLINE_DBG_PGM("J18", "TFT Serial Debug: UserConfirm SD Heater timeout... J18");
+    }
+    else if (strcmp_P(msg, PSTR("Reheat finished.")) == 0) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_REHEAT_FINISHED;
+      // enable continue button
+      SENDLINE_DBG_PGM("J18", "TFT Serial Debug: UserConfirm SD Reheat done... J18");
+    }
+  #endif
+}
+
+float AnycubicTFTClass::CodeValue() {
+  return (strtod(&TFTcmdbuffer[TFTbufindr][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindr] + 1], nullptr));
+}
+
+bool AnycubicTFTClass::CodeSeen(char code) {
+  TFTstrchr_pointer = strchr(TFTcmdbuffer[TFTbufindr], code);
+  return !!TFTstrchr_pointer; // Return True if a character was found
+}
+
+bool AnycubicTFTClass::IsNozzleHomed() {
+  const float xPosition = ExtUI::getAxisPosition_mm((ExtUI::axis_t) ExtUI::X);
+  const float yPosition = ExtUI::getAxisPosition_mm((ExtUI::axis_t) ExtUI::Y);
+  return WITHIN(xPosition, X_MIN_POS - 0.1, X_MIN_POS + 0.1) &&
+         WITHIN(yPosition, Y_MIN_POS - 0.1, Y_MIN_POS + 0.1);
+}
+
+void AnycubicTFTClass::HandleSpecialMenu() {
+  /**
+   * NOTE: that the file selection command actual lowercases the entire selected file/foldername, so charracter comparisons need to be lowercase.
+   */
+  if (SelectedDirectory[0] == '<') {
+    switch (SelectedDirectory[1]) {
+      case 'e': // "<exit>"
+        SpecialMenu = false;
+        return;
+        break;
+
+        #if ENABLED(PROBE_MANUALLY)
+          case '0':
+            switch (SelectedDirectory[2]) {
+              case '1': // "<01ZUp0.1>"
+                SERIAL_ECHOLNPGM("Special Menu: Z Up 0.1");
+                ExtUI::injectCommands_P(PSTR("G91\nG1 Z+0.1\nG90"));
+                break;
+
+              case '2': // "<02ZUp0.02>"
+                SERIAL_ECHOLNPGM("Special Menu: Z Up 0.02");
+                ExtUI::injectCommands_P(PSTR("G91\nG1 Z+0.02\nG90"));
+                break;
+
+              case '3': // "<03ZDn0.02>"
+                SERIAL_ECHOLNPGM("Special Menu: Z Down 0.02");
+                ExtUI::injectCommands_P(PSTR("G91\nG1 Z-0.02\nG90"));
+                break;
+
+              case '4': // "<04ZDn0.1>"
+                SERIAL_ECHOLNPGM("Special Menu: Z Down 0.1");
+                ExtUI::injectCommands_P(PSTR("G91\nG1 Z-0.1\nG90"));
+                break;
+
+              case '5': // "<05PrehtBed>"
+                SERIAL_ECHOLNPGM("Special Menu: Preheat Bed");
+                ExtUI::injectCommands_P(PSTR("M140 S65"));
+                break;
+
+              case '6': // "<06SMeshLvl>"
+                SERIAL_ECHOLNPGM("Special Menu: Start Mesh Leveling");
+                ExtUI::injectCommands_P(PSTR("G29S1"));
+                break;
+
+              case '7': // "<07MeshNPnt>"
+                SERIAL_ECHOLNPGM("Special Menu: Next Mesh Point");
+                ExtUI::injectCommands_P(PSTR("G29S2"));
+                break;
+
+              case '8': // "<08HtEndPID>"
+                SERIAL_ECHOLNPGM("Special Menu: Auto Tune Hotend PID");
+                // need to dwell for half a second to give the fan a chance to start before the pid tuning starts
+                ExtUI::injectCommands_P(PSTR("M106 S204\nG4 P500\nM303 E0 S215 C15 U1"));
+                break;
+
+              case '9': // "<09HtBedPID>"
+                SERIAL_ECHOLNPGM("Special Menu: Auto Tune Hotbed Pid");
+                ExtUI::injectCommands_P(PSTR("M303 E-1 S65 C6 U1"));
+                break;
+
+              default:
+                break;
+            }
+            break;
+
+          case '1':
+            switch (SelectedDirectory[2]) {
+              case '0': // "<10FWDeflts>"
+                SERIAL_ECHOLNPGM("Special Menu: Load FW Defaults");
+                ExtUI::injectCommands_P(PSTR("M502\nM300 P105 S1661\nM300 P210 S1108"));
+                break;
+
+              case '1': // "<11SvEEPROM>"
+                SERIAL_ECHOLNPGM("Special Menu: Save EEPROM");
+                ExtUI::injectCommands_P(PSTR("M500\nM300 P105 S1108\nM300 P210 S1661"));
+                break;
+
+              default:
+                break;
+            }
+            break;
+        #else // if ENABLED(PROBE_MANUALLY)
+          case '0':
+            switch (SelectedDirectory[2]) {
+              case '1': // "<01PrehtBed>"
+                SERIAL_ECHOLNPGM("Special Menu: Preheat Bed");
+                ExtUI::injectCommands_P(PSTR("M140 S65"));
+                break;
+
+              case '2': // "<02ABL>"
+                SERIAL_ECHOLNPGM("Special Menu: Auto Bed Leveling");
+                ExtUI::injectCommands_P(PSTR("G29N"));
+                break;
+
+              case '3': // "<03HtendPID>"
+                SERIAL_ECHOLNPGM("Special Menu: Auto Tune Hotend PID");
+                // need to dwell for half a second to give the fan a chance to start before the pid tuning starts
+                ExtUI::injectCommands_P(PSTR("M106 S204\nG4 P500\nM303 E0 S215 C15 U1"));
+                break;
+
+              case '4': // "<04HtbedPID>"
+                SERIAL_ECHOLNPGM("Special Menu: Auto Tune Hotbed Pid");
+                ExtUI::injectCommands_P(PSTR("M303 E-1 S65 C6 U1"));
+                break;
+
+              case '5': // "<05FWDeflts>"
+                SERIAL_ECHOLNPGM("Special Menu: Load FW Defaults");
+                ExtUI::injectCommands_P(PSTR("M502\nM300 P105 S1661\nM300 P210 S1108"));
+                break;
+
+              case '6': // "<06SvEEPROM>"
+                SERIAL_ECHOLNPGM("Special Menu: Save EEPROM");
+                ExtUI::injectCommands_P(PSTR("M500\nM300 P105 S1108\nM300 P210 S1661"));
+                break;
+
+              case '7': // <07SendM108>
+                SERIAL_ECHOLNPGM("Special Menu: Send User Confirmation");
+                ExtUI::injectCommands_P(PSTR("M108"));
+                break;
+
+              default:
+                break;
+            }
+            break;
+            #endif  // PROBE_MANUALLY
+
+          default:
+            break;
+    }
+    #if ENABLED(ANYCUBIC_LCD_DEBUG)
+  }
+  else {
+    SERIAL_ECHOPGM("TFT Serial Debug: Attempted to HandleSpecialMenu on non-special menu... ");
+    SERIAL_ECHOLN(SelectedDirectory);
+    #endif
+  }
+}
+
+void AnycubicTFTClass::RenderCurrentFileList() {
+  #if ENABLED(SDSUPPORT)
+    uint16_t selectedNumber = 0;
+    SelectedDirectory[0] = 0;
+    SelectedFile[0] = 0;
+    ExtUI::FileList currentFileList;
+
+    SENDLINE_PGM("FN "); // Filelist start
+
+    if (!ExtUI::isMediaInserted() && !SpecialMenu) {
+      SENDLINE_DBG_PGM("J02", "TFT Serial Debug: No SD Card mounted to render Current File List... J02");
+
+      SENDLINE_PGM("<Special_Menu>");
+      SENDLINE_PGM("<Special_Menu>");
+    }
+    else {
+      if (CodeSeen('S'))
+        selectedNumber = CodeValue();
+
+      if (SpecialMenu)
+        RenderSpecialMenu(selectedNumber);
+      else if (selectedNumber <= currentFileList.count())
+        RenderCurrentFolder(selectedNumber);
+    }
+    SENDLINE_PGM("END"); // Filelist stop
+  #endif // SDSUPPORT
+}
+
+void AnycubicTFTClass::RenderSpecialMenu(uint16_t selectedNumber) {
+  switch (selectedNumber) {
+    #if ENABLED(PROBE_MANUALLY)
+      case 0: // First Page
+        SENDLINE_PGM("<01ZUp0.1>");
+        SENDLINE_PGM("<Z Up 0.1>");
+        SENDLINE_PGM("<02ZUp0.02>");
+        SENDLINE_PGM("<Z Up 0.02>");
+        SENDLINE_PGM("<03ZDn0.02>");
+        SENDLINE_PGM("<Z Down 0.02>");
+        SENDLINE_PGM("<04ZDn0.1>");
+        SENDLINE_PGM("<Z Down 0.1>");
+        break;
+
+      case 4: // Second Page
+        SENDLINE_PGM("<05PrehtBed>");
+        SENDLINE_PGM("<Preheat bed>");
+        SENDLINE_PGM("<06SMeshLvl>");
+        SENDLINE_PGM("<Start Mesh Leveling>");
+        SENDLINE_PGM("<07MeshNPnt>");
+        SENDLINE_PGM("<Next Mesh Point>");
+        SENDLINE_PGM("<08HtEndPID>");
+        SENDLINE_PGM("<Auto Tune Hotend PID>");
+        break;
+
+      case 8: // Third Page
+        SENDLINE_PGM("<09HtBedPID>");
+        SENDLINE_PGM("<Auto Tune Hotbed PID>");
+        SENDLINE_PGM("<10FWDeflts>");
+        SENDLINE_PGM("<Load FW Defaults>");
+        SENDLINE_PGM("<11SvEEPROM>");
+        SENDLINE_PGM("<Save EEPROM>");
+        SENDLINE_PGM("<Exit>");
+        SENDLINE_PGM("<Exit>");
+        break;
+    #else
+      case 0: // First Page
+        SENDLINE_PGM("<01PrehtBed>");
+        SENDLINE_PGM("<Preheat bed>");
+        SENDLINE_PGM("<02ABL>");
+        SENDLINE_PGM("<Auto Bed Leveling>");
+        SENDLINE_PGM("<03HtEndPID>");
+        SENDLINE_PGM("<Auto Tune Hotend PID>");
+        SENDLINE_PGM("<04HtBedPID>");
+        SENDLINE_PGM("<Auto Tune Hotbed PID>");
+        break;
+
+      case 4: // Second Page
+        SENDLINE_PGM("<05FWDeflts>");
+        SENDLINE_PGM("<Load FW Defaults>");
+        SENDLINE_PGM("<06SvEEPROM>");
+        SENDLINE_PGM("<Save EEPROM>");
+        SENDLINE_PGM("<07SendM108>");
+        SENDLINE_PGM("<Send User Confirmation>");
+        SENDLINE_PGM("<Exit>");
+        SENDLINE_PGM("<Exit>");
+        break;
+
+        #endif // PROBE_MANUALLY
+
+      default:
+        break;
+  }
+}
+
+void AnycubicTFTClass::RenderCurrentFolder(uint16_t selectedNumber) {
+  ExtUI::FileList currentFileList;
+  uint16_t cnt = selectedNumber;
+  uint16_t max_files;
+  uint16_t dir_files = currentFileList.count();
+
+  if ((dir_files - selectedNumber) < 4)
+    max_files = dir_files;
+  else
+    max_files = selectedNumber + 3;
+
+  for (cnt = selectedNumber; cnt <= max_files; cnt++) {
+    if (cnt == 0) { // Special Entry
+      if (currentFileList.isAtRootDir()) {
+        SENDLINE_PGM("<specialmnu>");
+        SENDLINE_PGM("<Special Menu>");
+      }
+      else {
+        SENDLINE_PGM("/..");
+        SENDLINE_PGM("/..");
+      }
+    }
+    else {
+      currentFileList.seek(cnt - 1, false);
+
+      #if ENABLED(ANYCUBIC_LCD_DEBUG)
+        SERIAL_ECHOLN(currentFileList.filename());
+      #endif
+      if (currentFileList.isDir()) {
+        SEND_PGM("/");
+        SENDLINE(currentFileList.shortFilename());
+        SEND_PGM("/");
+        SENDLINE(currentFileList.filename());
+
+      }
+      else {
+        SENDLINE(currentFileList.shortFilename());
+        SENDLINE(currentFileList.filename());
+      }
+    }
+  }
+}
+
+void AnycubicTFTClass::OnPrintTimerStarted() {
+  #if ENABLED(SDSUPPORT)
+    if (mediaPrintingState == AMPRINTSTATE_PRINTING)
+      SENDLINE_DBG_PGM("J04", "TFT Serial Debug: Starting SD Print... J04"); // J04 Starting Print
+
+  #endif
+}
+
+void AnycubicTFTClass::OnPrintTimerPaused() {
+  #if ENABLED(SDSUPPORT)
+    if (ExtUI::isPrintingFromMedia()) {
+      mediaPrintingState = AMPRINTSTATE_PAUSED;
+      mediaPauseState    = AMPAUSESTATE_PARKING;
+    }
+  #endif
+}
+
+void AnycubicTFTClass::OnPrintTimerStopped() {
+  #if ENABLED(SDSUPPORT)
+    if (mediaPrintingState == AMPRINTSTATE_PRINTING) {
+      mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;
+      mediaPauseState    = AMPAUSESTATE_NOT_PAUSED;
+      SENDLINE_DBG_PGM("J14", "TFT Serial Debug: SD Print Completed... J14");
+    }
+    // otherwise it was stopped by the printer so don't send print completed signal to TFT
+  #endif
+}
+
+void AnycubicTFTClass::GetCommandFromTFT() {
+  char *starpos = nullptr;
+  while (LCD_SERIAL.available() > 0  && TFTbuflen < TFTBUFSIZE) {
+    serial3_char = LCD_SERIAL.read();
+    if (serial3_char == '\n' ||
+        serial3_char == '\r' ||
+        serial3_char == ':'  ||
+        serial3_count >= (TFT_MAX_CMD_SIZE - 1)
+    ) {
+
+      if (!serial3_count) return; // if empty line
+
+      TFTcmdbuffer[TFTbufindw][serial3_count] = 0; // terminate string
+
+      if ((strchr(TFTcmdbuffer[TFTbufindw], 'A') != nullptr)) {
+        int16_t a_command;
+        TFTstrchr_pointer = strchr(TFTcmdbuffer[TFTbufindw], 'A');
+        a_command = ((int)((strtod(&TFTcmdbuffer[TFTbufindw][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindw] + 1], nullptr))));
+
+        #if ENABLED(ANYCUBIC_LCD_DEBUG)
+          if ((a_command > 7) && (a_command != 20)) { // No debugging of status polls, please!
+            SERIAL_ECHOPGM("TFT Serial Command: ");
+            SERIAL_ECHOLN(TFTcmdbuffer[TFTbufindw]);
+          }
+        #endif
+
+        switch (a_command) {
+          case 0: { // A0 GET HOTEND TEMP
+            float hotendActualTemp = ExtUI::getActualTemp_celsius((ExtUI::extruder_t) (ExtUI::extruder_t) ExtUI::E0);
+            SEND_PGM_VAL("A0V ", int(hotendActualTemp + 0.5));
+          }
+          break;
+
+          case 1: { // A1  GET HOTEND TARGET TEMP
+            float hotendTargetTemp = ExtUI::getTargetTemp_celsius((ExtUI::extruder_t) (ExtUI::extruder_t) ExtUI::E0);
+            SEND_PGM_VAL("A1V ", int(hotendTargetTemp + 0.5));
+          }
+          break;
+
+          case 2: { // A2 GET HOTBED TEMP
+            float heatedBedActualTemp = ExtUI::getActualTemp_celsius((ExtUI::heater_t) ExtUI::BED);
+            SEND_PGM_VAL("A2V ", int(heatedBedActualTemp + 0.5));
+          }
+          break;
+
+          case 3: { // A3 GET HOTBED TARGET TEMP
+            float heatedBedTargetTemp = ExtUI::getTargetTemp_celsius((ExtUI::heater_t) ExtUI::BED);
+            SEND_PGM_VAL("A3V ", int(heatedBedTargetTemp + 0.5));
+          } break;
+
+          case 4: { // A4 GET FAN SPEED
+            float fanPercent = ExtUI::getActualFan_percent(ExtUI::FAN0);
+            fanPercent = constrain(fanPercent, 0, 100);
+            SEND_PGM_VAL("A4V ", int(fanPercent));
+          } break;
+
+          case 5: { // A5 GET CURRENT COORDINATE
+            const float xPosition = ExtUI::getAxisPosition_mm(ExtUI::X),
+                        yPosition = ExtUI::getAxisPosition_mm(ExtUI::Y),
+                        zPosition = ExtUI::getAxisPosition_mm(ExtUI::Z);
+            SEND_PGM("A5V X: "); LCD_SERIAL.print(xPosition);
+            SEND_PGM(   " Y: "); LCD_SERIAL.print(yPosition);
+            SEND_PGM(   " Z: "); LCD_SERIAL.print(zPosition);
+            SENDLINE_PGM("");
+          } break;
+
+          case 6: // A6 GET SD CARD PRINTING STATUS
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isPrintingFromMedia()) {
+                SEND_PGM("A6V ");
+                if (ExtUI::isMediaInserted())
+                  SENDLINE(ui8tostr3rj(ExtUI::getProgress_percent()));
+                else
+                  SENDLINE_DBG_PGM("J02", "TFT Serial Debug: No SD Card mounted to return printing status... J02");
+              }
+              else
+                SENDLINE_PGM("A6V ---");
+            #endif
+            break;
+
+          case 7: { // A7 GET PRINTING TIME
+            const uint32_t elapsedSeconds = ExtUI::getProgress_seconds_elapsed();
+            SEND_PGM("A7V ");
+            if (elapsedSeconds != 0) {  // print time
+              const uint32_t elapsedMinutes = elapsedSeconds / 60;
+              SEND(ui8tostr2(elapsedMinutes / 60));
+              SEND_PGM(" H ");
+              SEND(ui8tostr2(elapsedMinutes % 60));
+              SENDLINE_PGM(" M");
+            }
+            else
+              SENDLINE_PGM(" 999:999");
+          }
+          break;
+
+          case 8: // A8 GET  SD LIST
+            #if ENABLED(SDSUPPORT)
+              SelectedFile[0] = 0;
+              RenderCurrentFileList();
+            #endif
+            break;
+
+          case 9: // A9 pause sd print
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isPrintingFromMedia())
+                PausePrint();
+            #endif
+            break;
+
+          case 10: // A10 resume sd print
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isPrintingFromMediaPaused())
+                ResumePrint();
+            #endif
+            break;
+
+          case 11: // A11 STOP SD PRINT
+            TERN_(SDSUPPORT, StopPrint());
+            break;
+
+          case 12: // A12 kill
+            kill(PSTR(STR_ERR_KILLED));
+            break;
+
+          case 13: // A13 SELECTION FILE
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isMediaInserted()) {
+                starpos = (strchr(TFTstrchr_pointer + 4, '*'));
+                if (TFTstrchr_pointer[4] == '/') {
+                  strcpy(SelectedDirectory, TFTstrchr_pointer + 5);
+                  SelectedFile[0] = 0;
+                  SENDLINE_DBG_PGM("J21", "TFT Serial Debug: Clear file selection... J21 "); // J21 Not File Selected
+                  SENDLINE_PGM("");
+                }
+                else if (TFTstrchr_pointer[4] == '<') {
+                  strcpy(SelectedDirectory, TFTstrchr_pointer + 4);
+                  SpecialMenu = true;
+                  SelectedFile[0] = 0;
+                  SENDLINE_DBG_PGM("J21", "TFT Serial Debug: Clear file selection... J21 "); // J21 Not File Selected
+                  SENDLINE_PGM("");
+                }
+                else {
+                  SelectedDirectory[0] = 0;
+
+                  if (starpos) *(starpos - 1) = '\0';
+
+                  strcpy(SelectedFile, TFTstrchr_pointer + 4);
+                  SENDLINE_DBG_PGM_VAL("J20", "TFT Serial Debug: File Selected... J20 ", SelectedFile); // J20 File Selected
+                }
+              }
+            #endif
+            break;
+
+          case 14: // A14 START PRINTING
+            #if ENABLED(SDSUPPORT)
+              if (!ExtUI::isPrinting() && strlen(SelectedFile) > 0)
+                StartPrint();
+            #endif
+            break;
+
+          case 15: // A15 RESUMING FROM OUTAGE
+            // TODO: JBA implement resume form outage
+            break;
+
+          case 16: { // A16 set hotend temp
+            unsigned int tempvalue;
+            if (CodeSeen('S')) {
+              tempvalue = constrain(CodeValue(), 0, 275);
+              ExtUI::setTargetTemp_celsius(tempvalue, (ExtUI::extruder_t) ExtUI::E0);
+            }
+            else if (CodeSeen('C') && !ExtUI::isPrinting()) {
+              if (ExtUI::getAxisPosition_mm(ExtUI::Z) < 10)
+                ExtUI::injectCommands_P(PSTR("G1 Z10")); // RASE Z AXIS
+              tempvalue = constrain(CodeValue(), 0, 275);
+              ExtUI::setTargetTemp_celsius(tempvalue, (ExtUI::extruder_t) ExtUI::E0);
+            }
+          }
+          break;
+
+          case 17: { // A17 set heated bed temp
+            unsigned int tempbed;
+            if (CodeSeen('S')) {
+              tempbed = constrain(CodeValue(), 0, 100);
+              ExtUI::setTargetTemp_celsius(tempbed, (ExtUI::heater_t)ExtUI::BED);
+            }
+          }
+          break;
+
+          case 18: { // A18 set fan speed
+            float fanPercent;
+            if (CodeSeen('S')) {
+              fanPercent = CodeValue();
+              fanPercent = constrain(fanPercent, 0, 100);
+              ExtUI::setTargetFan_percent(fanPercent, ExtUI::FAN0);
+            }
+            else
+              fanPercent = 100;
+
+            ExtUI::setTargetFan_percent(fanPercent, ExtUI::FAN0);
+            SENDLINE_PGM("");
+          }
+          break;
+
+          case 19: // A19 stop stepper drivers - sent on stop extrude command and on turn motors off command
+            if (!ExtUI::isPrinting()) {
+              quickstop_stepper();
+              disable_all_steppers();
+            }
+
+            SENDLINE_PGM("");
+            break;
+
+          case 20: // A20 read printing speed
+            if (CodeSeen('S'))
+              feedrate_percentage = constrain(CodeValue(), 40, 999);
+            else
+              SEND_PGM_VAL("A20V ", feedrate_percentage);
+            break;
+
+          case 21: // A21 all home
+            if (!ExtUI::isPrinting() && !ExtUI::isPrintingFromMediaPaused()) {
+              if (CodeSeen('X') || CodeSeen('Y') || CodeSeen('Z')) {
+                if (CodeSeen('X'))
+                  ExtUI::injectCommands_P(PSTR("G28X"));
+                if (CodeSeen('Y'))
+                  ExtUI::injectCommands_P(PSTR("G28Y"));
+                if (CodeSeen('Z'))
+                  ExtUI::injectCommands_P(PSTR("G28Z"));
+              }
+              else if (CodeSeen('C')) {
+                ExtUI::injectCommands_P(G28_STR);
+              }
+            }
+            break;
+
+          case 22: // A22 move X/Y/Z or extrude
+            if (!ExtUI::isPrinting()) {
+              float coorvalue;
+              unsigned int movespeed = 0;
+              char commandStr[30];
+              char fullCommandStr[38];
+
+              commandStr[0] = 0; // empty string
+              if (CodeSeen('F'))  // Set feedrate
+                movespeed = CodeValue();
+
+              if (CodeSeen('X')) { // Move in X direction
+                coorvalue = CodeValue();
+                if ((coorvalue <= 0.2) && coorvalue > 0)
+                  sprintf_P(commandStr, PSTR("G1 X0.1F%i"), movespeed);
+                else if ((coorvalue <= -0.1) && coorvalue > -1)
+                  sprintf_P(commandStr, PSTR("G1 X-0.1F%i"), movespeed);
+                else
+                  sprintf_P(commandStr, PSTR("G1 X%iF%i"), int(coorvalue), movespeed);
+              }
+              else if (CodeSeen('Y')) {  // Move in Y direction
+                coorvalue = CodeValue();
+                if ((coorvalue <= 0.2) && coorvalue > 0)
+                  sprintf_P(commandStr, PSTR("G1 Y0.1F%i"), movespeed);
+                else if ((coorvalue <= -0.1) && coorvalue > -1)
+                  sprintf_P(commandStr, PSTR("G1 Y-0.1F%i"), movespeed);
+                else
+                  sprintf_P(commandStr, PSTR("G1 Y%iF%i"), int(coorvalue), movespeed);
+              }
+              else if (CodeSeen('Z')) {  // Move in Z direction
+                coorvalue = CodeValue();
+                if ((coorvalue <= 0.2) && coorvalue > 0)
+                  sprintf_P(commandStr, PSTR("G1 Z0.1F%i"), movespeed);
+                else if ((coorvalue <= -0.1) && coorvalue > -1)
+                  sprintf_P(commandStr, PSTR("G1 Z-0.1F%i"), movespeed);
+                else
+                  sprintf_P(commandStr, PSTR("G1 Z%iF%i"), int(coorvalue), movespeed);
+              }
+              else if (CodeSeen('E')) { // Extrude
+                coorvalue = CodeValue();
+                if ((coorvalue <= 0.2) && coorvalue > 0)
+                  sprintf_P(commandStr, PSTR("G1 E0.1F%i"), movespeed);
+                else if ((coorvalue <= -0.1) && coorvalue > -1)
+                  sprintf_P(commandStr, PSTR("G1 E-0.1F%i"), movespeed);
+                else
+                  sprintf_P(commandStr, PSTR("G1 E%iF500"), int(coorvalue));
+              }
+
+              if (strlen(commandStr) > 0) {
+                sprintf_P(fullCommandStr, PSTR("G91\n%s\nG90"), commandStr);
+                #if ENABLED(ANYCUBIC_LCD_DEBUG)
+                  SERIAL_ECHOPGM("TFT Serial Debug: A22 Move final request with gcode... ");
+                  SERIAL_ECHOLN(fullCommandStr);
+                #endif
+                ExtUI::injectCommands(fullCommandStr);
+              }
+            }
+            SENDLINE_PGM("");
+            break;
+
+          case 23: // A23 preheat pla
+            if (!ExtUI::isPrinting()) {
+              if (ExtUI::getAxisPosition_mm(ExtUI::Z) < 10)
+                ExtUI::injectCommands_P(PSTR("G1 Z10")); // RASE Z AXIS
+
+              ExtUI::setTargetTemp_celsius(PREHEAT_1_TEMP_BED, (ExtUI::heater_t) ExtUI::BED);
+              ExtUI::setTargetTemp_celsius(PREHEAT_1_TEMP_HOTEND, (ExtUI::extruder_t) ExtUI::E0);
+              SENDLINE_PGM("OK");
+            }
+            break;
+
+          case 24:// A24 preheat abs
+            if (!ExtUI::isPrinting()) {
+              if (ExtUI::getAxisPosition_mm(ExtUI::Z) < 10)
+                ExtUI::injectCommands_P(PSTR("G1 Z10")); // RASE Z AXIS
+
+              ExtUI::setTargetTemp_celsius(PREHEAT_2_TEMP_BED, (ExtUI::heater_t) ExtUI::BED);
+              ExtUI::setTargetTemp_celsius(PREHEAT_2_TEMP_HOTEND, (ExtUI::extruder_t) ExtUI::E0);
+              SENDLINE_PGM("OK");
+            }
+            break;
+
+          case 25: // A25 cool down
+            if (!ExtUI::isPrinting()) {
+              ExtUI::setTargetTemp_celsius(0, (ExtUI::heater_t) ExtUI::BED);
+              ExtUI::setTargetTemp_celsius(0, (ExtUI::extruder_t) ExtUI::E0);
+
+              SENDLINE_DBG_PGM("J12", "TFT Serial Debug: Cooling down... J12"); // J12 cool down
+            }
+            break;
+
+          case 26: // A26 refresh SD
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isMediaInserted()) {
+                if (strlen(SelectedDirectory) > 0) {
+                  ExtUI::FileList currentFileList;
+                  if ((SelectedDirectory[0] == '.') && (SelectedDirectory[1] == '.')) {
+                    currentFileList.upDir();
+                  }
+                  else {
+                    if (SelectedDirectory[0] == '<')
+                      HandleSpecialMenu();
+                    else
+                      currentFileList.changeDir(SelectedDirectory);
+                  }
+                }
+              }
+              else {
+                SENDLINE_DBG_PGM("J02", "TFT Serial Debug: No SD Card mounted to refresh SD A26... J02");
+              }
+
+              SelectedDirectory[0] = 0;
+            #endif
+            break;
+
+            #if ENABLED(SERVO_ENDSTOPS)
+              case 27: break; // A27 servos angles adjust
+            #endif
+
+          case 28: // A28 filament test
+            if (CodeSeen('O'))
+              NOOP;
+            else if (CodeSeen('C'))
+              NOOP;
+            SENDLINE_PGM("");
+            break;
+
+          case 33: // A33 get version info
+            SEND_PGM("J33 ");
+            SENDLINE_PGM(DETAILED_BUILD_VERSION);
+            break;
+
+          default:
+            break;
+        }
+      }
+
+      TFTbufindw = (TFTbufindw + 1) % TFTBUFSIZE;
+      TFTbuflen += 1;
+      serial3_count = 0; // clear buffer
+    }
+    else {
+      TFTcmdbuffer[TFTbufindw][serial3_count++] = serial3_char;
+    }
+  }
+}
+
+void AnycubicTFTClass::DoSDCardStateCheck() {
+  #if ENABLED(SDSUPPORT) && PIN_EXISTS(SD_DETECT)
+    bool isInserted = ExtUI::isMediaInserted();
+    if (isInserted)
+      SENDLINE_DBG_PGM("J00", "TFT Serial Debug: SD card state changed... isInserted");
+    else
+      SENDLINE_DBG_PGM("J01", "TFT Serial Debug: SD card state changed... !isInserted");
+
+  #endif
+}
+
+void AnycubicTFTClass::DoFilamentRunoutCheck() {
+  #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+    // NOTE: ExtUI::getFilamentRunoutState() only returns the runout state if the job is printing
+    // we want to actually check the status of the pin here, regardless of printstate
+    if (READ(FIL_RUNOUT1_PIN)) {
+      if (mediaPrintingState == AMPRINTSTATE_PRINTING || mediaPrintingState == AMPRINTSTATE_PAUSED || mediaPrintingState == AMPRINTSTATE_PAUSE_REQUESTED) {
+        // play tone to indicate filament is out
+        ExtUI::injectCommands_P(PSTR("\nM300 P200 S1567\nM300 P200 S1174\nM300 P200 S1567\nM300 P200 S1174\nM300 P2000 S1567"));
+
+        // tell the user that the filament has run out and wait
+        SENDLINE_DBG_PGM("J23", "TFT Serial Debug: Blocking filament prompt... J23");
+      }
+      else {
+        SENDLINE_DBG_PGM("J15", "TFT Serial Debug: Non blocking filament runout... J15");
+      }
+    }
+  #endif // FILAMENT_RUNOUT_SENSOR
+}
+
+void AnycubicTFTClass::StartPrint() {
+  #if ENABLED(SDSUPPORT)
+    if (!ExtUI::isPrinting() && strlen(SelectedFile) > 0) {
+      #if ENABLED(ANYCUBIC_LCD_DEBUG)
+        SERIAL_ECHOPGM("TFT Serial Debug: About to print file ... ");
+        SERIAL_ECHO(ExtUI::isPrinting());
+        SERIAL_ECHOPGM(" ");
+        SERIAL_ECHOLN(SelectedFile);
+      #endif
+      mediaPrintingState = AMPRINTSTATE_PRINTING;
+      mediaPauseState    = AMPAUSESTATE_NOT_PAUSED;
+      ExtUI::printFile(SelectedFile);
+    }
+  #endif // SDUPPORT
+}
+
+void AnycubicTFTClass::PausePrint() {
+  #if ENABLED(SDSUPPORT)
+    if (ExtUI::isPrintingFromMedia() && mediaPrintingState != AMPRINTSTATE_STOP_REQUESTED && mediaPauseState == AMPAUSESTATE_NOT_PAUSED) {
+      mediaPrintingState = AMPRINTSTATE_PAUSE_REQUESTED;
+      mediaPauseState    = AMPAUSESTATE_NOT_PAUSED; // need the userconfirm method to update pause state
+      SENDLINE_DBG_PGM("J05", "TFT Serial Debug: SD print pause started... J05"); // J05 printing pause
+
+      // for some reason pausing the print doesn't retract the extruder so force a manual one here
+      ExtUI::injectCommands_P(PSTR("G91\nG1 E-2 F1800\nG90"));
+      ExtUI::pausePrint();
+    }
+  #endif
+}
+
+void AnycubicTFTClass::ResumePrint() {
+  #if ENABLED(SDSUPPORT)
+    #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+      if (READ(FIL_RUNOUT1_PIN)) {
+        #if ENABLED(ANYCUBIC_LCD_DEBUG)
+          SERIAL_ECHOLNPGM("TFT Serial Debug: Resume Print with filament sensor still tripped... ");
+        #endif
+
+        // trigger the user message box
+        DoFilamentRunoutCheck();
+
+        // re-enable the continue button
+        SENDLINE_DBG_PGM("J18", "TFT Serial Debug: Resume Print with filament sensor still tripped... J18");
+        return;
+      }
+    #endif
+
+    if (mediaPauseState == AMPAUSESTATE_HEATER_TIMEOUT) {
+      mediaPauseState = AMPAUSESTATE_REHEATING;
+      // TODO: JBA I don't think J05 just disables the continue button, i think it injects a rogue M25. So taking this out
+      // // disable the continue button
+      // SENDLINE_DBG_PGM("J05", "TFT Serial Debug: Resume called with heater timeout... J05"); // J05 printing pause
+
+      // reheat the nozzle
+      ExtUI::setUserConfirmed();
+    }
+    else {
+      mediaPrintingState = AMPRINTSTATE_PRINTING;
+      mediaPauseState    = AMPAUSESTATE_NOT_PAUSED;
+
+      SENDLINE_DBG_PGM("J04", "TFT Serial Debug: SD print resumed... J04"); // J04 printing form sd card now
+      ExtUI::resumePrint();
+    }
+  #endif
+}
+
+void AnycubicTFTClass::StopPrint() {
+  #if ENABLED(SDSUPPORT)
+    mediaPrintingState = AMPRINTSTATE_STOP_REQUESTED;
+    mediaPauseState    = AMPAUSESTATE_NOT_PAUSED;
+    SENDLINE_DBG_PGM("J16", "TFT Serial Debug: SD print stop called... J16");
+
+    // for some reason stopping the print doesn't retract the extruder so force a manual one here
+    ExtUI::injectCommands_P(PSTR("G91\nG1 E-2 F1800\nG90"));
+    ExtUI::stopPrint();
+  #endif
+}
+
+#endif // ANYCUBIC_LCD_I3MEGA
diff --git a/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.h b/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.h
new file mode 100644
index 0000000..59050ac
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.h
@@ -0,0 +1,97 @@
+/**
+ * anycubic_i3mega_lcd.h  --- Support for Anycubic i3 Mega TFT
+ * Created by Christian Hopp on 09.12.17.
+ * Improved by David Ramiro
+ * Converted to ext_iu by John BouAntoun 21 June 2020
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#pragma once
+
+#include "../../../../inc/MarlinConfigPre.h"
+#include "../../../../sd/SdFatConfig.h"   // for the FILENAME_LENGTH macro
+
+#define TFTBUFSIZE 4
+#define TFT_MAX_CMD_SIZE 96
+
+enum AnycubicMediaPrintState {
+  AMPRINTSTATE_NOT_PRINTING,
+  AMPRINTSTATE_PRINTING,
+  AMPRINTSTATE_PAUSE_REQUESTED,
+  AMPRINTSTATE_PAUSED,
+  AMPRINTSTATE_STOP_REQUESTED
+};
+
+enum AnycubicMediaPauseState {
+  AMPAUSESTATE_NOT_PAUSED,
+  AMPAUSESTATE_PARKING,
+  AMPAUSESTATE_PARKED,
+  AMPAUSESTATE_FILAMENT_OUT,
+  AMPAUSESTATE_FIAMENT_PRUGING,
+  AMPAUSESTATE_HEATER_TIMEOUT,
+  AMPAUSESTATE_REHEATING,
+  AMPAUSESTATE_REHEAT_FINISHED
+};
+
+class AnycubicTFTClass {
+public:
+  AnycubicTFTClass();
+  void OnSetup();
+  void OnCommandScan();
+  void OnKillTFT();
+  void OnSDCardStateChange(bool);
+  void OnSDCardError();
+  void OnFilamentRunout();
+  void OnUserConfirmRequired(const char *);
+  void OnPrintTimerStarted();
+  void OnPrintTimerPaused();
+  void OnPrintTimerStopped();
+
+private:
+  char TFTcmdbuffer[TFTBUFSIZE][TFT_MAX_CMD_SIZE];
+  int TFTbuflen=0;
+  int TFTbufindr = 0;
+  int TFTbufindw = 0;
+  char serial3_char;
+  int serial3_count = 0;
+  char *TFTstrchr_pointer;
+  uint8_t SpecialMenu = false;
+  AnycubicMediaPrintState mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;
+  AnycubicMediaPauseState mediaPauseState = AMPAUSESTATE_NOT_PAUSED;
+
+  float CodeValue();
+  bool CodeSeen(char);
+  bool IsNozzleHomed();
+  void RenderCurrentFileList();
+  void RenderSpecialMenu(uint16_t);
+  void RenderCurrentFolder(uint16_t);
+  void GetCommandFromTFT();
+  void CheckSDCardChange();
+  void CheckPauseState();
+  void CheckPrintCompletion();
+  void HandleSpecialMenu();
+  void DoSDCardStateCheck();
+  void DoFilamentRunoutCheck();
+  void StartPrint();
+  void PausePrint();
+  void ResumePrint();
+  void StopPrint();
+
+  char SelectedDirectory[30];
+  char SelectedFile[FILENAME_LENGTH];
+};
+
+extern AnycubicTFTClass AnycubicTFT;
+extern const char G28_STR[];