From 4abad60bf199bacd4d43795de54cfcdc77610028 Mon Sep 17 00:00:00 2001
From: JBA <44487003+hub-jba@users.noreply.github.com>
Date: Fri, 17 Jul 2020 16:07:09 +1000
Subject: [PATCH] ExtUI for Anycubic I3 Mega (#18655)

---
 Marlin/src/gcode/feature/pause/M125.cpp       |    2 +-
 .../extui/lib/anycubic/anycubic_serial.cpp    |  294 +++++
 .../lcd/extui/lib/anycubic/anycubic_serial.h  |  143 +++
 .../lcd/extui/lib/anycubic/anycubic_tft.cpp   | 1066 +++++++++++++++++
 .../src/lcd/extui/lib/anycubic/anycubic_tft.h |  114 ++
 Marlin/src/lcd/extui_anycubic_tft.cpp         |  104 ++
 Marlin/src/pins/ramps/pins_TRIGORILLA_14.h    |   34 +-
 7 files changed, 1753 insertions(+), 4 deletions(-)
 create mode 100644 Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.cpp
 create mode 100644 Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.h
 create mode 100644 Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.cpp
 create mode 100644 Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.h
 create mode 100644 Marlin/src/lcd/extui_anycubic_tft.cpp

diff --git a/Marlin/src/gcode/feature/pause/M125.cpp b/Marlin/src/gcode/feature/pause/M125.cpp
index 12b0892d581..cb59985278f 100644
--- a/Marlin/src/gcode/feature/pause/M125.cpp
+++ b/Marlin/src/gcode/feature/pause/M125.cpp
@@ -79,7 +79,7 @@ void GcodeSuite::M125() {
 
   if (pause_print(retract, park_point, 0, show_lcd)) {
     TERN_(POWER_LOSS_RECOVERY, if (recovery.enabled) recovery.save(true));
-    if (!sd_printing || show_lcd) {
+    if (ENABLED(EXTENSIBLE_UI) || !sd_printing || show_lcd) {
       wait_for_confirmation(false, 0);
       resume_print(0, 0, -retract, 0);
     }
diff --git a/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.cpp b/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.cpp
new file mode 100644
index 00000000000..3fad103bb41
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.cpp
@@ -0,0 +1,294 @@
+/*
+  anycubic_serial.cpp  --- Support for Anycubic i3 Mega TFT serial connection
+  Created by Christian Hopp on 09.12.17.
+
+  Original file:
+  HardwareSerial.cpp - Hardware serial library for Wiring
+  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
+
+  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
+
+  Modified 23 November 2006 by David A. Mellis
+  Modified 28 September 2010 by Mark Sproul
+  Modified 14 August 2012 by Alarus
+*/
+
+#include "../../../../inc/MarlinConfig.h"
+
+#if ENABLED(ANYCUBIC_TFT_MODEL)
+
+#include "Arduino.h"
+
+// this next line disables the entire HardwareSerial.cpp,
+// so I can support AtTiny series and other chips without a UART
+#ifdef UBRR3H
+
+#include "anycubic_serial.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include "wiring_private.h"
+
+// Define constants and variables for buffering incoming serial data.  We're
+// using a ring buffer (I think), in which head is the index of the location
+// to which to write the next incoming character and tail is the index of the
+// location from which to read.
+#if (RAMEND < 1000)
+  #define SERIAL_BUFFER_SIZE 64
+#else
+  #define SERIAL_BUFFER_SIZE 128
+#endif
+
+struct ring_buffer {
+  unsigned char buffer[SERIAL_BUFFER_SIZE];
+  volatile unsigned int head;
+  volatile unsigned int tail;
+};
+
+#ifdef UBRR3H
+  ring_buffer rx_buffer_ajg  =  { { 0 }, 0, 0 };
+  ring_buffer tx_buffer_ajg  =  { { 0 }, 0, 0 };
+#endif
+
+inline void store_char(unsigned char c, ring_buffer *buffer) {
+  int i = (unsigned int)(buffer->head + 1) % SERIAL_BUFFER_SIZE;
+
+  // if we should be storing the received character into the location
+  // just before the tail (meaning that the head would advance to the
+  // current location of the tail), we're about to overflow the buffer
+  // and so we don't write the character or advance the head.
+  if (i != buffer->tail) {
+    buffer->buffer[buffer->head] = c;
+    buffer->head = i;
+  }
+}
+
+#if defined(USART3_RX_vect) && defined(UDR3)
+  void serialEvent3() __attribute__((weak));
+  void serialEvent3() {}
+  #define serialEvent3_implemented
+  ISR(USART3_RX_vect) {
+    if (bit_is_clear(UCSR3A, UPE3)) {
+      unsigned char c = UDR3;
+      store_char(c, &rx_buffer_ajg);
+    }
+    else {
+      unsigned char c = UDR3;
+    }
+  }
+#endif
+
+#ifdef USART3_UDRE_vect
+
+  ISR(USART3_UDRE_vect) {
+    if (tx_buffer_ajg.head == tx_buffer_ajg.tail) {
+  	// Buffer empty, so disable interrupts
+      cbi(UCSR3B, UDRIE3);
+    }
+    else {
+      // There is more data in the output buffer. Send the next byte
+      unsigned char c = tx_buffer_ajg.buffer[tx_buffer_ajg.tail];
+      tx_buffer_ajg.tail = (tx_buffer_ajg.tail + 1) % SERIAL_BUFFER_SIZE;
+
+      UDR3 = c;
+    }
+  }
+
+#endif
+
+// Constructors ////////////////////////////////////////////////////////////////
+
+AnycubicSerialClass::AnycubicSerialClass(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
+  volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
+  volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
+  volatile uint8_t *ucsrc, volatile uint8_t *udr,
+  uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x
+) {
+  _rx_buffer = rx_buffer;
+  _tx_buffer = tx_buffer;
+  _ubrrh = ubrrh;
+  _ubrrl = ubrrl;
+  _ucsra = ucsra;
+  _ucsrb = ucsrb;
+  _ucsrc = ucsrc;
+  _udr = udr;
+  _rxen = rxen;
+  _txen = txen;
+  _rxcie = rxcie;
+  _udrie = udrie;
+  _u2x = u2x;
+}
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+void AnycubicSerialClass::begin(unsigned long baud) {
+  uint16_t baud_setting;
+  bool use_u2x = true;
+
+  #if F_CPU == 16000000UL
+    // hardcoded exception for compatibility with the bootloader shipped
+    // with the Duemilanove and previous boards and the firmware on the 8U2
+    // on the Uno and Mega 2560.
+    if (baud == 57600) use_u2x = false;
+  #endif
+
+try_again:
+
+  if (use_u2x) {
+    *_ucsra = 1 << _u2x;
+    baud_setting = (F_CPU / 4 / baud - 1) / 2;
+  } else {
+    *_ucsra = 0;
+    baud_setting = (F_CPU / 8 / baud - 1) / 2;
+  }
+
+  if ((baud_setting > 4095) && use_u2x) {
+    use_u2x = false;
+    goto try_again;
+  }
+
+  // assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
+  *_ubrrh = baud_setting >> 8;
+  *_ubrrl = baud_setting;
+
+  transmitting = false;
+
+  sbi(*_ucsrb, _rxen);
+  sbi(*_ucsrb, _txen);
+  sbi(*_ucsrb, _rxcie);
+  cbi(*_ucsrb, _udrie);
+}
+
+void AnycubicSerialClass::begin(unsigned long baud, byte config) {
+  uint16_t baud_setting;
+  uint8_t current_config;
+  bool use_u2x = true;
+
+  #if F_CPU == 16000000UL
+    // hardcoded exception for compatibility with the bootloader shipped
+    // with the Duemilanove and previous boards and the firmware on the 8U2
+    // on the Uno and Mega 2560.
+    if (baud == 57600) use_u2x = false;
+  #endif
+
+try_again:
+
+  if (use_u2x) {
+    *_ucsra = 1 << _u2x;
+    baud_setting = (F_CPU / 4 / baud - 1) / 2;
+  }
+  else {
+    *_ucsra = 0;
+    baud_setting = (F_CPU / 8 / baud - 1) / 2;
+  }
+
+  if ((baud_setting > 4095) && use_u2x) {
+    use_u2x = false;
+    goto try_again;
+  }
+
+  // assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
+  *_ubrrh = baud_setting >> 8;
+  *_ubrrl = baud_setting;
+
+  //set the data bits, parity, and stop bits
+  #ifdef __AVR_ATmega8__
+    config |= 0x80; // select UCSRC register (shared with UBRRH)
+  #endif
+  *_ucsrc = config;
+
+  sbi(*_ucsrb, _rxen);
+  sbi(*_ucsrb, _txen);
+  sbi(*_ucsrb, _rxcie);
+  cbi(*_ucsrb, _udrie);
+}
+
+void AnycubicSerialClass::end() {
+  // wait for transmission of outgoing data
+  while (_tx_buffer->head != _tx_buffer->tail)
+    ;
+
+  cbi(*_ucsrb, _rxen);
+  cbi(*_ucsrb, _txen);
+  cbi(*_ucsrb, _rxcie);
+  cbi(*_ucsrb, _udrie);
+
+  // clear any received data
+  _rx_buffer->head = _rx_buffer->tail;
+}
+
+int AnycubicSerialClass::available(void) {
+  return (int)(SERIAL_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % SERIAL_BUFFER_SIZE;
+}
+
+int AnycubicSerialClass::peek(void) {
+  if (_rx_buffer->head == _rx_buffer->tail) {
+    return -1;
+  } else {
+    return _rx_buffer->buffer[_rx_buffer->tail];
+  }
+}
+
+int AnycubicSerialClass::read(void) {
+  // if the head isn't ahead of the tail, we don't have any characters
+  if (_rx_buffer->head == _rx_buffer->tail) {
+    return -1;
+  } else {
+    unsigned char c = _rx_buffer->buffer[_rx_buffer->tail];
+    _rx_buffer->tail = (unsigned int)(_rx_buffer->tail + 1) % SERIAL_BUFFER_SIZE;
+    return c;
+  }
+}
+
+void AnycubicSerialClass::flush() {
+  // UDR is kept full while the buffer is not empty, so TXC triggers when EMPTY && SENT
+  while (transmitting && ! (*_ucsra & _BV(TXC0)));
+  transmitting = false;
+}
+
+size_t AnycubicSerialClass::write(uint8_t c) {
+  int i = (_tx_buffer->head + 1) % SERIAL_BUFFER_SIZE;
+
+  // If the output buffer is full, there's nothing for it other than to
+  // wait for the interrupt handler to empty it a bit
+  // ???: return 0 here instead?
+  while (i == _tx_buffer->tail)
+    ;
+
+  _tx_buffer->buffer[_tx_buffer->head] = c;
+  _tx_buffer->head = i;
+
+  sbi(*_ucsrb, _udrie);
+  // clear the TXC bit -- "can be cleared by writing a one to its bit location"
+  transmitting = true;
+  sbi(*_ucsra, TXC0);
+
+  return 1;
+}
+
+AnycubicSerialClass::operator bool() {
+	return true;
+}
+
+// Preinstantiate Objects //////////////////////////////////////////////////////
+
+#ifdef UBRR3H
+  AnycubicSerialClass AnycubicSerial(&rx_buffer_ajg, &tx_buffer_ajg, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UCSR3C, &UDR3, RXEN3, TXEN3, RXCIE3, UDRIE3, U2X3);
+#endif
+
+#endif // UBRR3H
+#endif // ANYCUBIC_TFT_MODEL
diff --git a/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.h b/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.h
new file mode 100644
index 00000000000..e7494d38ada
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic/anycubic_serial.h
@@ -0,0 +1,143 @@
+/*
+  anycubic_serial.h  --- Support for Anycubic i3 Mega TFT serial connection
+  Created by Christian Hopp on 09.12.17.
+
+  Original file:
+
+  HardwareSerial.h - Hardware serial library for Wiring
+  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
+
+  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
+
+  Modified 28 September 2010 by Mark Sproul
+  Modified 14 August 2012 by Alarus
+*/
+#pragma once
+
+#include <inttypes.h>
+#include <avr/pgmspace.h>
+
+#include "Stream.h"
+
+#define FORCE_INLINE __attribute__((always_inline)) inline
+
+struct ring_buffer;
+
+class AnycubicSerialClass : public Stream {
+  private:
+    ring_buffer *_rx_buffer;
+    ring_buffer *_tx_buffer;
+    volatile uint8_t *_ubrrh;
+    volatile uint8_t *_ubrrl;
+    volatile uint8_t *_ucsra;
+    volatile uint8_t *_ucsrb;
+    volatile uint8_t *_ucsrc;
+    volatile uint8_t *_udr;
+    uint8_t _rxen;
+    uint8_t _txen;
+    uint8_t _rxcie;
+    uint8_t _udrie;
+    uint8_t _u2x;
+    bool transmitting;
+  public:
+    AnycubicSerialClass(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
+      volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
+      volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
+      volatile uint8_t *ucsrc, volatile uint8_t *udr,
+      uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x
+    );
+    void begin(unsigned long);
+    void begin(unsigned long, uint8_t);
+    void end();
+    virtual int available(void);
+    virtual int peek(void);
+    virtual int read(void);
+    virtual void flush(void);
+    virtual size_t write(uint8_t);
+    inline size_t write(unsigned long n) { return write((uint8_t)n); }
+    inline size_t write(long n) { return write((uint8_t)n); }
+    inline size_t write(unsigned int n) { return write((uint8_t)n); }
+    inline size_t write(int n) { return write((uint8_t)n); }
+    using Print::write; // pull in write(str) and write(buf, size) from Print
+    operator bool();
+};
+
+// Define config for Serial.begin(baud, config);
+#define SERIAL_5N1 0x00
+#define SERIAL_6N1 0x02
+#define SERIAL_7N1 0x04
+#define SERIAL_8N1 0x06
+#define SERIAL_5N2 0x08
+#define SERIAL_6N2 0x0A
+#define SERIAL_7N2 0x0C
+#define SERIAL_8N2 0x0E
+#define SERIAL_5E1 0x20
+#define SERIAL_6E1 0x22
+#define SERIAL_7E1 0x24
+#define SERIAL_8E1 0x26
+#define SERIAL_5E2 0x28
+#define SERIAL_6E2 0x2A
+#define SERIAL_7E2 0x2C
+#define SERIAL_8E2 0x2E
+#define SERIAL_5O1 0x30
+#define SERIAL_6O1 0x32
+#define SERIAL_7O1 0x34
+#define SERIAL_8O1 0x36
+#define SERIAL_5O2 0x38
+#define SERIAL_6O2 0x3A
+#define SERIAL_7O2 0x3C
+#define SERIAL_8O2 0x3E
+
+extern void serialEventRun(void) __attribute__((weak));
+
+#define ANYCUBIC_SERIAL_PROTOCOL(x) (AnycubicSerial.print(x))
+#define ANYCUBIC_SERIAL_PROTOCOL_F(x,y) (AnycubicSerial.print(x,y))
+#define ANYCUBIC_SERIAL_PROTOCOLPGM(x) (AnycubicSerialprintPGM(PSTR(x)))
+#define ANYCUBIC_SERIAL_(x) (AnycubicSerial.print(x),AnycubicSerial.write('\n'))
+#define ANYCUBIC_SERIAL_PROTOCOLLN(x) (AnycubicSerial.print(x),AnycubicSerial.write('\r'),AnycubicSerial.write('\n'))
+#define ANYCUBIC_SERIAL_PROTOCOLLNPGM(x) (AnycubicSerialprintPGM(PSTR(x)),AnycubicSerial.write('\r'),AnycubicSerial.write('\n'))
+
+#define ANYCUBIC_SERIAL_START() (AnycubicSerial.write('\r'),AnycubicSerial.write('\n'))
+#define ANYCUBIC_SERIAL_CMD_SEND(x) (AnycubicSerialprintPGM(PSTR(x)),AnycubicSerial.write('\r'),AnycubicSerial.write('\n'))
+#define ANYCUBIC_SERIAL_ENTER() (AnycubicSerial.write('\r'),AnycubicSerial.write('\n'))
+#define ANYCUBIC_SERIAL_SPACE() (AnycubicSerial.write(' '))
+
+const char newErr[] PROGMEM = "ERR ";
+const char newSucc[] PROGMEM = "OK";
+
+#define ANYCUBIC_SERIAL_ERROR_START (AnycubicSerialprintPGM(newErr))
+#define ANYCUBIC_SERIAL_ERROR(x) ANYCUBIC_SERIAL_PROTOCOL(x)
+#define ANYCUBIC_SERIAL_ERRORPGM(x) ANYCUBIC_SERIAL_PROTOCOLPGM(x)
+#define ANYCUBIC_SERIAL_ERRORLN(x) ANYCUBIC_SERIAL_PROTOCOLLN(x)
+#define ANYCUBIC_SERIAL_ERRORLNPGM(x) ANYCUBIC_SERIAL_PROTOCOLLNPGM(x)
+
+//##define ANYCUBIC_SERIAL_ECHO_START (AnycubicSerialprintPGM(newSucc))
+#define ANYCUBIC_SERIAL_ECHOLN(x) ANYCUBIC_SERIAL_PROTOCOLLN(x)
+#define ANYCUBIC_SERIAL_SUCC_START (AnycubicSerialprintPGM(newSucc))
+#define ANYCUBIC_SERIAL_ECHOPAIR(name,value) (serial_echopair_P(PSTR(name),(value)))
+#define ANYCUBIC_SERIAL_ECHOPGM(x) ANYCUBIC_SERIAL_PROTOCOLPGM(x)
+#define ANYCUBIC_SERIAL_ECHO(x) ANYCUBIC_SERIAL_PROTOCOL(x)
+
+FORCE_INLINE void AnycubicSerialprintPGM(const char *str) {
+  char ch=pgm_read_byte(str);
+  while (ch) {
+    AnycubicSerial.write(ch);
+    ch=pgm_read_byte(++str);
+  }
+}
+
+#ifdef UBRR3H
+  extern AnycubicSerialClass AnycubicSerial;
+#endif
diff --git a/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.cpp b/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.cpp
new file mode 100644
index 00000000000..718b47fee9b
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.cpp
@@ -0,0 +1,1066 @@
+/**
+ * anycubic_tft.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_TFT_MODEL)
+
+#include "anycubic_tft.h"
+#include "anycubic_serial.h"
+
+#include "../../../../inc/MarlinConfig.h"
+#include "../../ui_api.h"
+#include "../../../../MarlinCore.h" // for quickstop_stepper and disable_steppers
+
+AnycubicTFTClass AnycubicTFT;
+
+char _conv[8];
+
+char *itostr2(const uint8_t &x) {
+  // sprintf(conv,"%5.1f",x);
+  int xx = x;
+  _conv[0] = (xx / 10) % 10 + '0';
+  _conv[1] = (xx) % 10 + '0';
+  _conv[2] = 0;
+  return _conv;
+}
+
+#ifndef ULTRA_LCD
+  #define DIGIT(n) ('0' + (n))
+  #define DIGIMOD(n, f) DIGIT((n) / (f) % 10)
+  #define RJDIGIT(n, f) ((n) >= (f) ? DIGIMOD(n, f) : ' ')
+  #define MINUSOR(n, alt) (n >= 0 ? (alt) : (n = -n, '-'))
+
+  char* itostr3(const int x) {
+    int xx = x;
+    _conv[4] = MINUSOR(xx, RJDIGIT(xx, 100));
+    _conv[5] = RJDIGIT(xx, 10);
+    _conv[6] = DIGIMOD(xx, 1);
+    return &_conv[4];
+  }
+
+// Convert signed float to fixed-length string with 023.45 / -23.45 format
+  char *ftostr32(const float &x) {
+    long xx = x * 100;
+    _conv[1] = MINUSOR(xx, DIGIMOD(xx, 10000));
+    _conv[2] = DIGIMOD(xx, 1000);
+    _conv[3] = DIGIMOD(xx, 100);
+    _conv[4] = '.';
+    _conv[5] = DIGIMOD(xx, 10);
+    _conv[6] = DIGIMOD(xx, 1);
+    return &_conv[1];
+  }
+
+#endif
+
+AnycubicTFTClass::AnycubicTFTClass() {}
+
+void AnycubicTFTClass::OnSetup() {
+  AnycubicSerial.begin(115200);
+  ANYCUBIC_SENDCOMMAND_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)
+    pinMode(SD_DETECT_PIN, INPUT);
+    WRITE(SD_DETECT_PIN, HIGH);
+  #endif
+  #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+    pinMode(FIL_RUNOUT_PIN, INPUT);
+    WRITE(FIL_RUNOUT_PIN, HIGH);
+  #endif
+
+  mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;
+  mediaPauseState = AMPAUSESTATE_NOT_PAUSED;
+
+  // DoSDCardStateCheck();
+  ANYCUBIC_SENDCOMMAND_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_TFT_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_TFT_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
+      ANYCUBIC_SENDCOMMAND_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() {
+  ANYCUBIC_SENDCOMMAND_DBG_PGM("J11", "TFT Serial Debug: Kill command... J11");
+}
+
+void AnycubicTFTClass::OnSDCardStateChange(bool isInserted) {
+  #if ENABLED(ANYCUBIC_TFT_DEBUG)
+    SERIAL_ECHOPGM("TFT Serial Debug: OnSDCardStateChange event triggered...");
+    SERIAL_ECHO(itostr2(isInserted));
+    SERIAL_EOL();
+  #endif
+  DoSDCardStateCheck();
+}
+
+void AnycubicTFTClass::OnSDCardError() {
+  #if ENABLED(ANYCUBIC_TFT_DEBUG)
+    SERIAL_ECHOLNPGM("TFT Serial Debug: OnSDCardError event triggered...");
+  #endif
+  ANYCUBIC_SENDCOMMAND_DBG_PGM("J21", "TFT Serial Debug: On SD Card Error ... J21");
+}
+
+void AnycubicTFTClass::OnFilamentRunout() {
+  #if ENABLED(ANYCUBIC_TFT_DEBUG)
+    SERIAL_ECHOLNPGM("TFT Serial Debug: FilamentRunout triggered...");
+  #endif
+  DoFilamentRunoutCheck();
+}
+
+void AnycubicTFTClass::OnUserConfirmRequired(const char * const msg) {
+  #if ENABLED(ANYCUBIC_TFT_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
+      ANYCUBIC_SENDCOMMAND_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
+      ANYCUBIC_SENDCOMMAND_DBG_PGM("J18", "TFT Serial Debug: UserConfirm Filament is out... J18");
+      ANYCUBIC_SENDCOMMAND_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
+      // ANYCUBIC_SENDCOMMAND_DBG_PGM("J05", "TFT Serial Debug: UserConfirm SD Filament Purging... J05"); // J05 printing pause
+
+      // enable continue button
+      ANYCUBIC_SENDCOMMAND_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
+      ANYCUBIC_SENDCOMMAND_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
+      ANYCUBIC_SENDCOMMAND_DBG_PGM("J18", "TFT Serial Debug: UserConfirm SD Reheat done... J18");
+    }
+  #endif
+}
+
+float AnycubicTFTClass::CodeValue() {
+  return (strtod(&TFTcmdbuffer[TFTbufindr][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindr] + 1], NULL));
+}
+
+bool AnycubicTFTClass::CodeSeen(char code) {
+  TFTstrchr_pointer = strchr(TFTcmdbuffer[TFTbufindr], code);
+  return (TFTstrchr_pointer != NULL); // 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("G29 S1"));
+                break;
+
+              case '7': // "<07MeshNPnt>"
+                SERIAL_ECHOLNPGM("Special Menu: Next Mesh Point");
+                ExtUI::injectCommands_P(PSTR("G29 S2"));
+                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("G28\nG29"));
+                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_TFT_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;
+
+    ANYCUBIC_SERIAL_PROTOCOLPGM("FN "); // Filelist start
+    ANYCUBIC_SERIAL_ENTER();
+
+    if (!ExtUI::isMediaInserted() && !SpecialMenu) {
+      ANYCUBIC_SENDCOMMAND_DBG_PGM("J02", "TFT Serial Debug: No SD Card mounted to render Current File List... J02");
+
+      ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Special_Menu>");
+      ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Special_Menu>");
+    }
+    else {
+      if (CodeSeen('S'))
+        selectedNumber = CodeValue();
+
+      if (SpecialMenu)
+        RenderSpecialMenu(selectedNumber);
+      else
+        RenderCurrentFolder(selectedNumber);
+    }
+    ANYCUBIC_SERIAL_PROTOCOLPGM("END"); // Filelist stop
+    ANYCUBIC_SERIAL_ENTER();
+  #endif // SDSUPPORT
+}
+
+void AnycubicTFTClass::RenderSpecialMenu(uint16_t selectedNumber) {
+  switch (selectedNumber) {
+    #if ENABLED(PROBE_MANUALLY)
+      case 0: // First Page
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<01ZUp0.1>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Z Up 0.1>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<02ZUp0.02>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Z Up 0.02>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<03ZDn0.02>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Z Down 0.02>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<04ZDn0.1>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Z Down 0.1>");
+        break;
+
+      case 4: // Second Page
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<05PrehtBed>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Preheat bed>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<06SMeshLvl>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Start Mesh Leveling>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<07MeshNPnt>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Next Mesh Point>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<08HtEndPID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Auto Tune Hotend PID>");
+        break;
+
+      case 8: // Third Page
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<09HtBedPID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Auto Tune Hotbed PID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<10FWDeflts>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Load FW Defaults>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<11SvEEPROM>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Save EEPROM>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Exit>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Exit>");
+        break;
+    #else
+      case 0: // First Page
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<01PrehtBed>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Preheat bed>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<02ABL>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Auto Bed Leveling>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<03HtEndPID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Auto Tune Hotend PID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<04HtBedPID>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Auto Tune Hotbed PID>");
+        break;
+
+      case 4: // Second Page
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<05FWDeflts>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Load FW Defaults>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<06SvEEPROM>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Save EEPROM>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<07SendM108>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Send User Confirmation>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Exit>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<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()) {
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<specialmnu>");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("<Special Menu>");
+      }
+      else {
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("/..");
+        ANYCUBIC_SERIAL_PROTOCOLLNPGM("/..");
+      }
+    }
+    else {
+      currentFileList.seek(cnt - 1, false);
+
+      #if ENABLED(ANYCUBIC_TFT_DEBUG)
+        SERIAL_ECHOLN(currentFileList.filename());
+      #endif
+      if (currentFileList.isDir()) {
+        ANYCUBIC_SERIAL_PROTOCOLPGM("/");
+        ANYCUBIC_SERIAL_PROTOCOLLN(currentFileList.shortFilename());
+        ANYCUBIC_SERIAL_PROTOCOLPGM("/");
+        ANYCUBIC_SERIAL_PROTOCOLLN(currentFileList.longFilename());
+
+      }
+      else {
+        ANYCUBIC_SERIAL_PROTOCOLLN(currentFileList.shortFilename());
+        ANYCUBIC_SERIAL_PROTOCOLLN(currentFileList.longFilename());
+      }
+    }
+  }
+}
+
+void AnycubicTFTClass::OnPrintTimerStarted() {
+  #if ENABLED(SDSUPPORT)
+    if (mediaPrintingState == AMPRINTSTATE_PRINTING)
+      ANYCUBIC_SENDCOMMAND_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;
+      ANYCUBIC_SENDCOMMAND_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 = NULL;
+  while (AnycubicSerial.available() > 0  && TFTbuflen < TFTBUFSIZE) {
+    serial3_char = AnycubicSerial.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') != NULL)) {
+        int16_t a_command;
+        TFTstrchr_pointer = strchr(TFTcmdbuffer[TFTbufindw], 'A');
+        a_command = ((int)((strtod(&TFTcmdbuffer[TFTbufindw][TFTstrchr_pointer - TFTcmdbuffer[TFTbufindw] + 1], NULL))));
+
+        #if ENABLED(ANYCUBIC_TFT_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);
+            ANYCUBIC_SENDCOMMANDPGM_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);
+            ANYCUBIC_SENDCOMMANDPGM_VAL("A1V ", int(hotendTargetTemp + 0.5));
+          }
+          break;
+
+          case 2: { // A2 GET HOTBED TEMP
+            float heatedBedActualTemp = ExtUI::getActualTemp_celsius((ExtUI::heater_t) ExtUI::BED);
+            ANYCUBIC_SENDCOMMANDPGM_VAL("A2V ", int(heatedBedActualTemp + 0.5));
+          }
+          break;
+
+          case 3: { // A3 GET HOTBED TARGET TEMP
+            float heatedBedTargetTemp = ExtUI::getTargetTemp_celsius((ExtUI::heater_t) ExtUI::BED);
+            ANYCUBIC_SENDCOMMANDPGM_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);
+            ANYCUBIC_SENDCOMMANDPGM_VAL("A4V ", int(fanPercent));
+          }
+          break;
+
+          case 5: // A5 GET CURRENT COORDINATE
+          {
+            float xPostition = ExtUI::getAxisPosition_mm(ExtUI::X);
+            float yPostition = ExtUI::getAxisPosition_mm(ExtUI::Y);
+            float zPostition = ExtUI::getAxisPosition_mm(ExtUI::Z);
+            ANYCUBIC_SERIAL_PROTOCOLPGM("A5V");
+            ANYCUBIC_SERIAL_SPACE();
+            ANYCUBIC_SERIAL_PROTOCOLPGM("X: ");
+            ANYCUBIC_SERIAL_PROTOCOL(xPostition);
+            ANYCUBIC_SERIAL_SPACE();
+            ANYCUBIC_SERIAL_PROTOCOLPGM("Y: ");
+            ANYCUBIC_SERIAL_PROTOCOL(yPostition);
+            ANYCUBIC_SERIAL_SPACE();
+            ANYCUBIC_SERIAL_PROTOCOLPGM("Z: ");
+            ANYCUBIC_SERIAL_PROTOCOL(zPostition);
+            ANYCUBIC_SERIAL_SPACE();
+            ANYCUBIC_SERIAL_ENTER();
+          }
+          break;
+
+          case 6: // A6 GET SD CARD PRINTING STATUS
+            #if ENABLED(SDSUPPORT)
+              if (ExtUI::isPrintingFromMedia()) {
+                ANYCUBIC_SERIAL_PROTOCOLPGM("A6V ");
+                if (ExtUI::isMediaInserted()) {
+                  ANYCUBIC_SERIAL_PROTOCOL(itostr3(int(ExtUI::getProgress_percent())));
+                  ANYCUBIC_SERIAL_ENTER();
+                }
+                else {
+                  ANYCUBIC_SENDCOMMAND_DBG_PGM("J02", "TFT Serial Debug: No SD Card mounted to return printing status... J02");
+                }
+              }
+              else {
+                ANYCUBIC_SERIAL_PROTOCOLPGM("A6V ---");
+                ANYCUBIC_SERIAL_ENTER();
+              }
+            #endif
+            break;
+
+          case 7: { // A7 GET PRINTING TIME
+            uint32_t elapsedSeconds = ExtUI::getProgress_seconds_elapsed();
+            ANYCUBIC_SERIAL_PROTOCOLPGM("A7V ");
+            if (elapsedSeconds != 0) {  // print time
+              uint32_t elapsedMinutes = elapsedSeconds / 60;
+              ANYCUBIC_SERIAL_PROTOCOL(itostr2(elapsedMinutes / 60));
+              ANYCUBIC_SERIAL_SPACE();
+              ANYCUBIC_SERIAL_PROTOCOLPGM("H");
+              ANYCUBIC_SERIAL_SPACE();
+              ANYCUBIC_SERIAL_PROTOCOL(itostr2(elapsedMinutes % 60));
+              ANYCUBIC_SERIAL_SPACE();
+              ANYCUBIC_SERIAL_PROTOCOLPGM("M");
+            }
+            else {
+              ANYCUBIC_SERIAL_SPACE();
+              ANYCUBIC_SERIAL_PROTOCOLPGM("999:999");
+            }
+            ANYCUBIC_SERIAL_ENTER();
+          }
+          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
+            #if ENABLED(SDSUPPORT)
+              StopPrint();
+            #endif
+            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;
+                  ANYCUBIC_SENDCOMMAND_DBG_PGM("J21", "TFT Serial Debug: Clear file selection... J21 "); // J21 Not File Selected
+                  ANYCUBIC_SERIAL_ENTER();
+                }
+                else if (TFTstrchr_pointer[4] == '<') {
+                  strcpy(SelectedDirectory, TFTstrchr_pointer + 4);
+                  SpecialMenu = true;
+                  SelectedFile[0] = 0;
+                  ANYCUBIC_SENDCOMMAND_DBG_PGM("J21", "TFT Serial Debug: Clear file selection... J21 "); // J21 Not File Selected
+                  ANYCUBIC_SERIAL_ENTER();
+                }
+                else {
+                  SelectedDirectory[0] = 0;
+
+                  if (starpos != NULL)
+                    *(starpos - 1) = '\0';
+
+                  strcpy(SelectedFile, TFTstrchr_pointer + 4);
+                  ANYCUBIC_SENDCOMMAND_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);
+
+            ANYCUBIC_SERIAL_ENTER();
+          }
+          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();
+            }
+
+            ANYCUBIC_SERIAL_ENTER();
+            break;
+
+          case 20: { // A20 read printing speed
+            int16_t feedrate_percentage = 100;
+
+            if (CodeSeen('S'))
+              feedrate_percentage = constrain(CodeValue(), 40, 999);
+            else
+              ANYCUBIC_SENDCOMMANDPGM_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("G28 X"));
+                if (CodeSeen('Y'))
+                  ExtUI::injectCommands_P(PSTR("G28 Y"));
+                if (CodeSeen('Z'))
+                  ExtUI::injectCommands_P(PSTR("G28 Z"));
+              }
+              else if (CodeSeen('C')) {
+                ExtUI::injectCommands_P(PSTR("G28"));
+              }
+            }
+            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_TFT_DEBUG)
+                  SERIAL_ECHOPGM("TFT Serial Debug: A22 Move final request with gcode... ");
+                  SERIAL_ECHOLN(fullCommandStr);
+                #endif
+                ExtUI::injectCommands(fullCommandStr);
+              }
+            }
+            ANYCUBIC_SERIAL_ENTER();
+            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);
+              ANYCUBIC_SERIAL_SUCC_START;
+              ANYCUBIC_SERIAL_ENTER();
+            }
+            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);
+              ANYCUBIC_SERIAL_SUCC_START;
+              ANYCUBIC_SERIAL_ENTER();
+            }
+            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);
+
+              ANYCUBIC_SENDCOMMAND_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 {
+                ANYCUBIC_SENDCOMMAND_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;
+            ANYCUBIC_SERIAL_ENTER();
+            break;
+
+          case 33: // A33 get version info
+            ANYCUBIC_SERIAL_PROTOCOLPGM("J33 ");
+            ANYCUBIC_SERIAL_PROTOCOLPGM(DETAILED_BUILD_VERSION);
+            ANYCUBIC_SERIAL_ENTER();
+            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)
+      ANYCUBIC_SENDCOMMAND_DBG_PGM("J00", "TFT Serial Debug: SD card state changed... isInserted");
+    else
+      ANYCUBIC_SENDCOMMAND_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_RUNOUT_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
+        ANYCUBIC_SENDCOMMAND_DBG_PGM("J23", "TFT Serial Debug: Blocking filament prompt... J23");
+      }
+      else {
+        ANYCUBIC_SENDCOMMAND_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_TFT_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
+      ANYCUBIC_SENDCOMMAND_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_RUNOUT_PIN)) {
+        #if ENABLED(ANYCUBIC_TFT_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
+        ANYCUBIC_SENDCOMMAND_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
+      // ANYCUBIC_SENDCOMMAND_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;
+
+      ANYCUBIC_SENDCOMMAND_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;
+    ANYCUBIC_SENDCOMMAND_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_TFT_MODEL
diff --git a/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.h b/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.h
new file mode 100644
index 00000000000..324dfd213f4
--- /dev/null
+++ b/Marlin/src/lcd/extui/lib/anycubic/anycubic_tft.h
@@ -0,0 +1,114 @@
+/**
+ * anycubic_tft.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
+
+// command sending macro's with debugging capability
+#define ANYCUBIC_SENDCOMMANDPGM(x)                  ANYCUBIC_SERIAL_PROTOCOLLNPGM(x)
+#define ANYCUBIC_SENDCOMMANDPGM_VAL(x,y)            (ANYCUBIC_SERIAL_PROTOCOLPGM(x), ANYCUBIC_SERIAL_PROTOCOLLN(itostr3(y)))
+#define ANYCUBIC_SENDCOMMAND(x)                     ANYCUBIC_SERIAL_PROTOCOLLN(x)
+#if ENABLED(ANYCUBIC_TFT_DEBUG)
+  #define ANYCUBIC_SENDCOMMAND_DBG_PGM(x,y)         (ANYCUBIC_SERIAL_PROTOCOLLNPGM(x), SERIAL_ECHOLNPGM(y))
+  #define ANYCUBIC_SENDCOMMAND_DBG_PGM_VAL(x,y,z)   (ANYCUBIC_SERIAL_PROTOCOLLNPGM(x), SERIAL_ECHOPGM(y), SERIAL_ECHOLN(z))
+#else
+  #define ANYCUBIC_SENDCOMMAND_DBG_PGM(x,y)         (ANYCUBIC_SERIAL_PROTOCOLLNPGM(x))
+  #define ANYCUBIC_SENDCOMMAND_DBG_PGM_VAL(x,y,z)   (ANYCUBIC_SERIAL_PROTOCOLLNPGM(x))
+#endif
+
+char *itostr2(const uint8_t &x);
+#ifndef ULTRA_LCD
+  char *itostr3(const int);
+  char *ftostr32(const float &);
+#endif
+
+#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;
diff --git a/Marlin/src/lcd/extui_anycubic_tft.cpp b/Marlin/src/lcd/extui_anycubic_tft.cpp
new file mode 100644
index 00000000000..6782f8d9d6a
--- /dev/null
+++ b/Marlin/src/lcd/extui_anycubic_tft.cpp
@@ -0,0 +1,104 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * extui_anycubic_tft.cpp
+ */
+
+#include "../inc/MarlinConfigPre.h"
+
+#if BOTH(ANYCUBIC_TFT_MODEL, EXTENSIBLE_UI)
+
+#include "extui/lib/anycubic/anycubic_tft.h"
+#include "extui/ui_api.h"
+
+#include <Arduino.h>    // for the ::tone() call
+
+namespace ExtUI {
+
+  void onStartup()        { AnycubicTFT.OnSetup(); }
+  void onIdle()           { AnycubicTFT.OnCommandScan(); }
+  void onPrinterKilled(PGM_P const error, PGM_P const component) { AnycubicTFT.OnKillTFT(); }
+  void onMediaInserted()  { AnycubicTFT.OnSDCardStateChange(true); }
+  void onMediaError()     { AnycubicTFT.OnSDCardError(); }
+  void onMediaRemoved()   { AnycubicTFT.OnSDCardStateChange(false); }
+  void onPlayTone(const uint16_t frequency, const uint16_t duration) {
+    #if ENABLED(SPEAKER)
+      ::tone(BEEPER_PIN, frequency, duration);
+    #endif
+  }
+  void onPrintTimerStarted()  { AnycubicTFT.OnPrintTimerStarted(); }
+  void onPrintTimerPaused()   { AnycubicTFT.OnPrintTimerPaused(); }
+  void onPrintTimerStopped()  { AnycubicTFT.OnPrintTimerStopped(); }
+  void onFilamentRunout(const extruder_t extruder)   { AnycubicTFT.OnFilamentRunout(); }
+  void onUserConfirmRequired(const char * const msg) { AnycubicTFT.OnUserConfirmRequired(msg); }
+  void onStatusChanged(const char * const msg) {}
+  void onFactoryReset() {}
+
+  void onStoreSettings(char *buff) {
+    // Called when saving to EEPROM (i.e. M500). If the ExtUI needs
+    // permanent data to be stored, it can write up to eeprom_data_size bytes
+    // into buff.
+
+    // Example:
+    //  static_assert(sizeof(myDataStruct) <= ExtUI::eeprom_data_size);
+    //  memcpy(buff, &myDataStruct, sizeof(myDataStruct));
+  }
+
+  void onLoadSettings(const char *buff) {
+    // Called while loading settings from EEPROM. If the ExtUI
+    // needs to retrieve data, it should copy up to eeprom_data_size bytes
+    // from buff
+
+    // Example:
+    //  static_assert(sizeof(myDataStruct) <= ExtUI::eeprom_data_size);
+    //  memcpy(&myDataStruct, buff, sizeof(myDataStruct));
+  }
+
+  void onConfigurationStoreWritten(bool success) {
+    // Called after the entire EEPROM has been written,
+    // whether successful or not.
+  }
+
+  void onConfigurationStoreRead(bool success) {
+    // Called after the entire EEPROM has been read,
+    // whether successful or not.
+  }
+
+  void onMeshUpdate(const int8_t xpos, const int8_t ypos, const float zval) {
+    // Called when any mesh points are updated
+  }
+
+  #if ENABLED(POWER_LOSS_RECOVERY)
+    void onPowerLossResume() {
+      // Called on resume from power-loss
+    }
+  #endif
+
+  #if HAS_PID_HEATING
+    void onPidTuning(const result_t rst) {
+      // Called for temperature PID tuning result
+    }
+  #endif
+}
+
+#endif // ANYCUBIC_TFT_MODEL && EXTENSIBLE_UI
diff --git a/Marlin/src/pins/ramps/pins_TRIGORILLA_14.h b/Marlin/src/pins/ramps/pins_TRIGORILLA_14.h
index a512aa8353f..ce3160ffe93 100644
--- a/Marlin/src/pins/ramps/pins_TRIGORILLA_14.h
+++ b/Marlin/src/pins/ramps/pins_TRIGORILLA_14.h
@@ -38,15 +38,38 @@
 #endif
 
 //
-// Custom Limit Switches
+// Limit Switches
 //
 //#define ANYCUBIC_4_MAX_PRO_ENDSTOPS
+
+#define X_MIN_PIN                              3
+
 #if ENABLED(ANYCUBIC_4_MAX_PRO_ENDSTOPS)
   #define X_MAX_PIN                           43
-  #define Y_MIN_PIN                           19
+#else
+  #define X_MAX_PIN                           43
 #endif
 
-// Labeled pins
+#if ENABLED(ANYCUBIC_4_MAX_PRO_ENDSTOPS)
+  #define Y_STOP_PIN                          19
+#else
+  #define Y_STOP_PIN                          42
+#endif
+
+#define Z_STOP_PIN                            18
+
+//
+// Z Probe (when not Z_MIN_PIN)
+//
+#define Z_MIN_PROBE_PIN                        2
+
+#ifndef FIL_RUNOUT_PIN
+  #define FIL_RUNOUT_PIN                      19
+#endif
+
+//
+// Heaters / Fans
+//
 #define TG_HEATER_BED_PIN                      8
 #define TG_HEATER_0_PIN                       10
 #define TG_HEATER_1_PIN                       45  // Anycubic Kossel: Unused
@@ -55,6 +78,11 @@
 #define TG_FAN1_PIN                            7  // Anycubic Kossel: Unused
 #define TG_FAN2_PIN                           44  // Anycubic Kossel: Hotend fan
 
+#define CONTROLLER_FAN_PIN           TG_FAN1_PIN
+
+#define BEEPER_PIN                            31
+#define SD_DETECT_PIN                         49
+
 // Remap MOSFET pins to common usages:
 
 #define RAMPS_D10_PIN            TG_HEATER_0_PIN  // HEATER_0_PIN is always RAMPS_D10_PIN in pins_RAMPS.h