MarlinUI for SPI/I2C TFT-GLCD character-based display bridge (#19375)

Marlin/Configuration.h

 //
 //#define FF_INTERFACEBOARD
 
+//
+// TFT GLCD Panel with Marlin UI
+// Panel connected to main board by SPI or I2C interface.
+// See https://github.com/Serhiy-K/TFTGLCDAdapter
+//
+//#define TFTGLCD_PANEL_SPI
+//#define TFTGLCD_PANEL_I2C
+
 //=============================================================================
 //=======================   LCD / Controller Selection  =======================
 //=========================      (Graphical LCDs)      ========================

Marlin/Configuration_adv.h

   #define BOOTSCREEN_TIMEOUT 4000        // (ms) Total Duration to display the boot screen(s)
 #endif
 
-#if EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY) && (HAS_MARLINUI_U8GLIB || HAS_MARLINUI_HD44780)
+#if EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY) && ANY(HAS_MARLINUI_U8GLIB, HAS_MARLINUI_HD44780, IS_TFTGLCD_PANEL)
   //#define SHOW_REMAINING_TIME       // Display estimated time to completion
   #if ENABLED(SHOW_REMAINING_TIME)
     //#define USE_M73_REMAINING_TIME  // Use remaining time from M73 command instead of estimation
     //#define PRINT_PROGRESS_SHOW_DECIMALS // Show progress with decimal digits
   #endif
 
-  #if HAS_MARLINUI_HD44780
+  #if EITHER(HAS_MARLINUI_HD44780, IS_TFTGLCD_PANEL)
     //#define LCD_PROGRESS_BAR            // Show a progress bar on HD44780 LCDs for SD printing
     #if ENABLED(LCD_PROGRESS_BAR)
       #define PROGRESS_BAR_BAR_TIME 2000  // (ms) Amount of time to show the bar

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

 
         if (do_ubl_mesh_map) display_map(g29_map_type);     // Display the current point
 
+        #if IS_TFTGLCD_PANEL
+          ui.ubl_plot(lpos.x, lpos.y);   // update plot screen
+        #endif
+
         ui.refresh();
 
         float new_z = z_values[lpos.x][lpos.y];

Marlin/src/inc/Conditionals_LCD.h

   #define LCD_WIDTH 16
   #define LCD_HEIGHT 2
 
+#elif EITHER(TFTGLCD_PANEL_SPI, TFTGLCD_PANEL_I2C)
+
+  #define IS_TFTGLCD_PANEL 1
+  #define IS_ULTIPANEL                      // Note that IS_ULTIPANEL leads to HAS_WIRED_LCD
+
+  #if ENABLED(SDSUPPORT) && DISABLED(LCD_PROGRESS_BAR)
+    #define LCD_PROGRESS_BAR
+  #endif
+  #if ENABLED(TFTGLCD_PANEL_I2C)
+    #define LCD_USE_I2C_BUZZER              // Enable buzzer on LCD for I2C and SPI buses (LiquidTWI2 not required)
+    #define LCD_I2C_ADDRESS           0x27  // Must be equal to panel's I2C slave addres
+  #endif
+  #define STD_ENCODER_PULSES_PER_STEP 2
+  #define STD_ENCODER_STEPS_PER_MENU_ITEM 1
+  #define LCD_WIDTH                   20    // 20 or 24 chars in line
+  #define LCD_HEIGHT                  10    // Character lines
+  #define LCD_CONTRAST_MIN            127
+  #define LCD_CONTRAST_MAX            255
+  #define DEFAULT_LCD_CONTRAST        250
+  #define CONVERT_TO_EXT_ASCII        // Use extended 128-255 symbols from ASCII table.
+                                      // At this time present conversion only for cyrillic - bg, ru and uk languages.
+                                      // First 7 ASCII symbols in panel font must be replaced with Marlin's special symbols.
 #endif
 
 #if ENABLED(IS_RRD_FG_SC)
   #define HAS_WIRED_LCD 1
   #if ENABLED(DOGLCD)
     #define HAS_MARLINUI_U8GLIB 1
+  #elif IS_TFTGLCD_PANEL
+    // Neither DOGM nor HD44780. Fully customized interface.
   #elif DISABLED(HAS_GRAPHICAL_TFT)
     #define HAS_MARLINUI_HD44780 1
   #endif

Marlin/src/inc/Conditionals_post.h

   #define _LCD_CONTRAST_MIN   64
   #define _LCD_CONTRAST_INIT 128
   #define _LCD_CONTRAST_MAX  255
+#elif IS_TFTGLCD_PANEL
+  #define _LCD_CONTRAST_MIN    0
+  #define _LCD_CONTRAST_INIT 250
+  #define _LCD_CONTRAST_MAX  255
 #endif
 
 #ifdef _LCD_CONTRAST_INIT
 /**
  * Buzzer/Speaker
  */
-#if PIN_EXISTS(BEEPER) || EITHER(LCD_USE_I2C_BUZZER, PCA9632_BUZZER)
+#if PIN_EXISTS(BEEPER) || ANY(LCD_USE_I2C_BUZZER, PCA9632_BUZZER, IS_TFTGLCD_PANEL)
   #define HAS_BUZZER 1
   #if PIN_EXISTS(BEEPER)
     #define USE_BEEPER 1

Marlin/src/inc/SanityCheck.h

 #if ENABLED(LCD_PROGRESS_BAR)
   #if NONE(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY)
     #error "LCD_PROGRESS_BAR requires SDSUPPORT or LCD_SET_PROGRESS_MANUALLY."
-  #elif !HAS_MARLINUI_HD44780
-    #error "LCD_PROGRESS_BAR requires a character LCD."
+  #elif NONE(HAS_MARLINUI_HD44780, IS_TFTGLCD_PANEL)
+    #error "LCD_PROGRESS_BAR only applies to HD44780 character LCD and TFTGLCD_PANEL_(SPI|I2C)."
   #elif HAS_MARLINUI_U8GLIB
     #error "LCD_PROGRESS_BAR does not apply to graphical displays."
   #elif ENABLED(FILAMENT_LCD_DISPLAY)
   + ENABLED(TFT_LVGL_UI_FSMC) \
   + ENABLED(TFT_LVGL_UI_SPI) \
   + ENABLED(ANYCUBIC_LCD_I3MEGA) \
-  + ENABLED(ANYCUBIC_LCD_CHIRON)
+  + ENABLED(ANYCUBIC_LCD_CHIRON) \
+  + ENABLED(TFTGLCD_PANEL_SPI) \
+  + ENABLED(TFTGLCD_PANEL_I2C)
   #error "Please select only one LCD controller option."
 #endif
 

Marlin/src/lcd/TFTGLCD/ultralcd_TFTGLCD.h

+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * Implementation of the LCD display routines for a TFT GLCD displays with external controller.
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if IS_TFTGLCD_PANEL
+
+#include "../../libs/duration_t.h"
+
+////////////////////////////////////
+// Set up button and encode mappings for each panel (into 'buttons' variable)
+//
+// This is just to map common functions (across different panels) onto the same
+// macro name. The mapping is independent of whether the button is directly connected or
+// via a shift/i2c register.
+
+////////////////////////////////////
+// Create LCD class instance and chipset-specific information
+class TFTGLCD {
+  private:
+  public:
+    TFTGLCD();
+    void clear_buffer();
+    void setCursor(uint8_t col, uint8_t row);
+    void write(char c);
+    void print(const char *line);
+    void print_line();
+    void print_screen();
+    void redraw_screen();
+    void setContrast(uint16_t contrast);
+};
+
+extern TFTGLCD lcd;
+
+#include "../fontutils.h"
+#include "../lcdprint.h"
+
+// Use panel encoder - free old encoder pins
+#undef  BTN_EN1
+#undef  BTN_EN2
+#undef  BTN_ENC
+#define BTN_EN1     -1
+#define BTN_EN2     -1
+#define BTN_ENC     -1
+
+#ifndef EN_C
+  #define EN_C       4 //for click
+#endif
+
+#endif // IS_TFTGLCD_PANEL

Marlin/src/lcd/menu/menu_ubl.cpp

 static void _lcd_mesh_fine_tune(PGM_P const msg) {
   ui.defer_status_screen();
   if (ubl.encoder_diff) {
-    mesh_edit_accumulator += ubl.encoder_diff > 0 ? 0.005f : -0.005f;
+    mesh_edit_accumulator += TERN(IS_TFTGLCD_PANEL,
+      ubl.encoder_diff * 0.005f / ENCODER_PULSES_PER_STEP,
+      ubl.encoder_diff > 0 ? 0.005f : -0.005f
+    );
     ubl.encoder_diff = 0;
-    ui.refresh(LCDVIEW_CALL_REDRAW_NEXT);
+    TERN(IS_TFTGLCD_PANEL,,ui.refresh(LCDVIEW_CALL_REDRAW_NEXT));
   }
+  TERN_(IS_TFTGLCD_PANEL, ui.refresh(LCDVIEW_CALL_REDRAW_NEXT));
 
   if (ui.should_draw()) {
     const float rounded_f = rounded_mesh_value();

Marlin/src/lcd/ultralcd.cpp

  * This is very display-dependent, so the lcd implementation draws this.
  */
 
-#if ENABLED(LCD_PROGRESS_BAR)
+#if ENABLED(LCD_PROGRESS_BAR) && !IS_TFTGLCD_PANEL
   millis_t MarlinUI::progress_bar_ms; // = 0
   #if PROGRESS_MSG_EXPIRE > 0
     millis_t MarlinUI::expire_status_ms; // = 0
 
   TERN_(HAS_LCD_MENU, ENCODER_RATE_MULTIPLY(false));
 
-  #if ENABLED(LCD_PROGRESS_BAR)
+  #if ENABLED(LCD_PROGRESS_BAR) && !IS_TFTGLCD_PANEL
 
     //
     // HD44780 implements the following message blinking and
 
       const bool encoderPastThreshold = (abs_diff >= epps);
       if (encoderPastThreshold || lcd_clicked) {
-        if (encoderPastThreshold) {
+        if (encoderPastThreshold && TERN1(IS_TFTGLCD_PANEL, !external_control)) {
 
           #if BOTH(HAS_LCD_MENU, ENCODER_RATE_MULTIPLIER)
 
         TERN(REPRAPWORLD_KEYPAD, keypad_buttons, buttons) = ~val;
       #endif
 
+      #if IS_TFTGLCD_PANEL
+        next_button_update_ms = now + (LCD_UPDATE_INTERVAL / 2);
+        buttons = slow_buttons;
+        TERN_(AUTO_BED_LEVELING_UBL, external_encoder());
+      #endif
+
     } // next_button_update_ms
 
     #if HAS_ENCODER_WHEEL
       const millis_t ms = millis();
     #endif
 
-    #if ENABLED(LCD_PROGRESS_BAR)
+    #if ENABLED(LCD_PROGRESS_BAR) && !IS_TFTGLCD_PANEL
       progress_bar_ms = ms;
       #if PROGRESS_MSG_EXPIRE > 0
         expire_status_ms = persist ? 0 : ms + PROGRESS_MSG_EXPIRE;

Marlin/src/lcd/ultralcd.h

 #if EITHER(HAS_LCD_MENU, ULTIPANEL_FEEDMULTIPLY)
   #define HAS_ENCODER_ACTION 1
 #endif
-#if (!HAS_ADC_BUTTONS && ENABLED(NEWPANEL)) || BUTTONS_EXIST(EN1, EN2)
+#if ((!HAS_ADC_BUTTONS && ENABLED(NEWPANEL)) || BUTTONS_EXIST(EN1, EN2)) && !IS_TFTGLCD_PANEL
   #define HAS_ENCODER_WHEEL 1
 #endif
 #if HAS_ENCODER_WHEEL || ANY_BUTTON(ENC, BACK, UP, DWN, LFT, RT)
 #endif
 
 // I2C buttons must be read in the main thread
-#if EITHER(LCD_I2C_VIKI, LCD_I2C_PANELOLU2)
+#if ANY(LCD_I2C_VIKI, LCD_I2C_PANELOLU2, IS_TFTGLCD_PANEL)
   #define HAS_SLOW_BUTTONS 1
 #endif
 
 
 #endif
 
-#if BUTTON_EXISTS(BACK) || HAS_TOUCH_XPT2046
+#if BUTTON_EXISTS(BACK) || EITHER(HAS_TOUCH_XPT2046, IS_TFTGLCD_PANEL)
   #define BLEN_D 3
   #define EN_D _BV(BLEN_D)
   #define LCD_BACK_CLICKED() (buttons & EN_D)

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_1.h

  * by redrawing the screen after SD card accesses.
  */
 
-#if HAS_WIRED_LCD
+#if IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define TFTGLCD_CS                     P3_26
+  #endif
+
+  #define SD_DETECT_PIN                    P1_31
+
+#elif HAS_WIRED_LCD
+
   #define BTN_EN1                          P3_26
   #define BTN_EN2                          P3_25
   #define BTN_ENC                          P2_11
     #define DOGLCD_CS                      P2_06
     #define DOGLCD_A0                      P0_16
   #endif
-#endif
+
+#endif // HAS_WIRED_LCD
 
 //
 // SD Support
 // requires jumpers on the SKR V1.1 board as documented here:
 // https://www.facebook.com/groups/505736576548648/permalink/630639874058317/
 #ifndef SDCARD_CONNECTION
-  #if EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
+  #if ANY(MKS_MINI_12864, ENDER2_STOCKDISPLAY, IS_TFTGLCD_PANEL)
     #define SDCARD_CONNECTION                LCD
   #else
     #define SDCARD_CONNECTION            ONBOARD

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h

 
     #error "ADC BUTTONS do not work unmodifed on SKR 1.3, The ADC ports cannot take more than 3.3v."
 
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS            EXPA2_08_PIN
+    #endif
+
+    #define SD_DETECT_PIN           EXPA2_04_PIN
+
   #else                                           // !CR10_STOCKDISPLAY
 
     #define LCD_PINS_RS             EXPA1_07_PIN

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h

       #define XPT2046_Y_OFFSET             -285
     #endif
 
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS                   P3_26
+    #endif
+
+    #define SD_DETECT_PIN                  P1_31
+
   #else
 
     #define BTN_ENC                        P0_28  // (58) open-drain

Marlin/src/pins/lpc1768/pins_MKS_SBASE.h

  * that the garbage/lines are erased immediately after the SD card accesses are completed.
  */
 
-#if HAS_WIRED_LCD
+#if IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define   TFTGLCD_CS                   P3_25  // EXP2.3
+  #endif
+
+  #if SD_CONNECTION_IS(LCD)
+    #define SD_DETECT_PIN                  P0_28  // EXP2.4
+  #endif
+
+#elif HAS_WIRED_LCD
+
   #define BEEPER_PIN                       P1_31  // EXP1.1
   #define BTN_ENC                          P1_30  // EXP1.2
   #define BTN_EN1                          P3_26  // EXP2.5
     //#define LCD_SCREEN_ROT_270
   #endif
 
-#endif
+#endif // HAS_WIRED_LCD
 
 /**
  * Example for trinamic drivers using the J8 connector on MKs Sbase.

Marlin/src/pins/lpc1768/pins_MKS_SGEN_L.h

     #define LCD_PINS_ENABLE                P1_22
     #define LCD_PINS_D4                    P0_17
 
+  #elif IS_TFTGLCD_PANEL
+
+    #undef BEEPER_PIN
+    #undef BTN_ENC
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS                   P3_25
+    #endif
+
   #else
 
     #define BTN_EN1                        P3_25

Marlin/src/pins/lpc1768/pins_RAMPS_RE_ARM.h

   #define LCD_PINS_ENABLE                  P0_18  // J3-10 & AUX-3 (SID, MOSI)
   #define LCD_PINS_D4                      P2_06  // J3-8 & AUX-3 (SCK, CLK)
 
+#elif IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define TFTGLCD_CS                     P3_26  // (31) J3-2 & AUX-4
+  #endif
+
+  #define SD_DETECT_PIN                    P1_31  // (49) J3-1 & AUX-3 (NOT 5V tolerant)
+  #define KILL_PIN                         P1_22  // (41) J5-4 & AUX-4
+
 #elif HAS_WIRED_LCD
 
   //#define SCK_PIN                        P0_15  // (52)  system defined J3-9 & AUX-3

Marlin/src/pins/lpc1769/pins_MKS_SGEN_L_V2.h

  *                -----                                            -----
  *                EXP1                                             EXP2
  */
-#if HAS_WIRED_LCD
+#if IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define TFTGLCD_CS                     P3_25
+  #endif
+
+  #define SD_DETECT_PIN                    P0_27
+
+#elif HAS_WIRED_LCD
+
   #define BEEPER_PIN                       P1_31
   #define BTN_ENC                          P1_30
 

Marlin/src/pins/lpc1769/pins_SMOOTHIEBOARD.h

 
 #elif HAS_WIRED_LCD
 
-  /*
-    The Smoothieboard supports the REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER with either
-    a custom cable with breakouts to the pins indicated below or the RRD GLCD Adapter board
-    found at http://smoothieware.org/rrdglcdadapter
-
-    Other links to information about setting up a display panel with Smoothieboard
-    http://chibidibidiwah.wdfiles.com/local--files/panel/smoothieboard2sd.jpg
-    http://smoothieware.org/panel
-  */
-
+  /**
+   * SD Support
+   *
+   * For the RRD GLCD it CANNOT share the same SPI as the LCD so it must be
+   * hooked up to the onboard SDCard SPI and use a spare pin for the SDCS.
+   * Also note that an external SDCard sharing the SPI port with the
+   * onboard/internal SDCard must be ejected before rebooting as the bootloader
+   * does not like the external card. NOTE Smoothie will not boot if the external
+   * sdcard is inserted in the RRD LCD sdcard slot at boot time, it must be
+   * inserted after it has booted.
+   */
+  #define SD_DETECT_PIN                    P0_27  // EXP2 Pin 7 (SD_CD, SD_DET)
+
+  #define MISO_PIN                         P0_08  // EXP2 Pin 1 (PB3, SD_MISO)
+  #define SCK_PIN                          P0_07  // EXP2 Pin 2 (SD_SCK)
+  #define SS_PIN                           P0_28  // EXP2 Pin 4 (SD_CSEL, SD_CS)
+  #define MOSI_PIN                         P0_09  // EXP2 Pin 6 (PB2, SD_MOSI)
+
+  /**
+   * The Smoothieboard supports the REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER with either
+   * a custom cable with breakouts to the pins indicated below or the RRD GLCD Adapter board
+   * found at http://smoothieware.org/rrdglcdadapter
+   *
+   * Other links to information about setting up a display panel with Smoothieboard
+   * http://chibidibidiwah.wdfiles.com/local--files/panel/smoothieboard2sd.jpg
+   * http://smoothieware.org/panel
+   */
   #if ENABLED(REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
     //  EXP1 Pins
     #define BEEPER_PIN                     P1_31  // EXP1 Pin 1
     #define BTN_EN2                        P3_26  // EXP2 Pin 3
     #define BTN_EN1                        P3_25  // EXP2 Pin 5
 
-    /*
-      SD Support
-
-      For the RRD GLCD it CANNOT share the same SPI as the LCD so it must be
-      hooked up to the onboard SDCard SPI and use a spare pin for the SDCS.
-      Also note that an external SDCard sharing the SPI port with the
-      onboard/internal SDCard must be ejected before rebooting as the bootloader
-      does not like the external card. NOTE Smoothie will not boot if the external
-      sdcard is inserted in the RRD LCD sdcard slot at boot time, it must be
-      inserted after it has booted.
-    */
-
-    #define MISO_PIN                       P0_08  // EXP2 Pin 1 (PB3, SD_MISO)
-    #define SCK_PIN                        P0_07  // EXP2 Pin 2 (SD_SCK)
-    #define SS_PIN                         P0_28  // EXP2 Pin 4 (SD_CSEL, SD_CS)
-    #define MOSI_PIN                       P0_09  // EXP2 Pin 6 (PB2, SD_MOSI)
+  #elif IS_TFTGLCD_PANEL
+
     #define SD_DETECT_PIN                  P0_27  // EXP2 Pin 7 (SD_CD, SD_DET)
 
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS                   P3_26  // EXP2 Pin 3
+    #endif
+
   #else
     #error "Marlin's Smoothieboard support cannot drive your LCD."
   #endif

Marlin/src/pins/pinsDebug_list.h

 #if defined(TMC_SW_SCK) && TMC_SW_SCK >= 0
   REPORT_NAME_DIGITAL(__LINE__, TMC_SW_SCK)
 #endif
+#if defined(TFTGLCD_CS) && TFTGLCD_CS >= 0
+  REPORT_NAME_DIGITAL(__LINE__, TFTGLCD_CS)
+#endif
 #if PIN_EXISTS(E_MUX0)
   REPORT_NAME_DIGITAL(__LINE__, E_MUX0_PIN)
 #endif

Marlin/src/pins/ramps/pins_RAMPS.h

     #define LCD_PINS_D6                       44
     #define LCD_PINS_D7                       64
 
+  #elif ENABLED(TFTGLCD_PANEL_SPI)
+
+    #define TFTGLCD_CS                        33
+
   #else
 
     #if ENABLED(CR10_STOCKDISPLAY)
 
       // Pins only defined for RAMPS_SMART currently
 
+    #elif IS_TFTGLCD_PANEL
+
+      #define SD_DETECT_PIN                   49
+
     #else
 
       // Beeper on AUX-4

Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h

 
 #if SD_CONNECTION_IS(ONBOARD)
   #define SD_DETECT_PIN                     PC4
-#endif
-
-#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) && SD_CONNECTION_IS(LCD)
+#elif SD_CONNECTION_IS(LCD) && BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
   #define SD_DETECT_PIN                     PA15
   #define SS_PIN                            PA10
 #elif SD_CONNECTION_IS(CUSTOM_CABLE)

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3_common.h

     #define FORCE_SOFT_SPI
     #define LCD_BACKLIGHT_PIN               -1
 
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+
+      #error "CAUTION! TFTGLCD_PANEL_SPI requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. Comment out this line to continue."
+
+      /**
+       * TFTGLCD_PANEL_SPI display pinout
+       *
+       *               Board                                      Display
+       *               _____                                       _____
+       *           5V | 1 2 | GND                (SPI1-MISO) MISO | 1 2 | SCK   (SPI1-SCK)
+       * (FREE)   PB7 | 3 4 | PB8  (LCD_CS)      (PA9)    GLCD_CS | 3 4 | SD_CS (PA10)
+       * (FREE)   PB9 | 5 6 | PA10 (SD_CS)                 (FREE) | 5 6 | MOSI  (SPI1-MOSI)
+       *        RESET | 7 8 | PA9  (MOD_RESET)   (PB5)     SD_DET | 7 8 | (FREE)
+       * (BEEPER) PB6 | 9 10| PB5  (SD_DET)                   GND | 9 10| 5V
+       *               -----                                       -----
+       *                EXP1                                        EXP1
+       *
+       * Needs custom cable:
+       *
+       *    Board   Adapter   Display
+       *           _________
+       *   EXP1-1 ----------- EXP1-10
+       *   EXP1-2 ----------- EXP1-9
+       *   SPI1-4 ----------- EXP1-6
+       *   EXP1-4 ----------- FREE
+       *   SPI1-3 ----------- EXP1-2
+       *   EXP1-6 ----------- EXP1-4
+       *   EXP1-7 ----------- FREE
+       *   EXP1-8 ----------- EXP1-3
+       *   SPI1-1 ----------- EXP1-1
+       *  EXP1-10 ----------- EXP1-7
+       *
+       */
+
+      #define TFTGLCD_CS                    PA9
+
+    #endif
+
   #else
-    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_MINI_E3."
+    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, MKS_MINI_12864, and TFTGLCD_PANEL_(SPI|I2C) are currently supported on the BIGTREE_SKR_MINI_E3."
   #endif
 
 #endif // HAS_WIRED_LCD
 
 #if SD_CONNECTION_IS(ONBOARD)
   #define SD_DETECT_PIN                     PC4
-#endif
-
-#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) && SD_CONNECTION_IS(LCD)
+#elif SD_CONNECTION_IS(LCD) && (BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) || IS_TFTGLCD_PANEL)
   #define SD_DETECT_PIN                     PB5
   #define SS_PIN                            PA10
 #elif SD_CONNECTION_IS(CUSTOM_CABLE)

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h

     #define LCD_PINS_ENABLE                 PC14
     #define LCD_PINS_D4                     PB7
 
+  #elif IS_TFTGLCD_PANEL
+
+    #undef BEEPER_PIN
+    #undef BTN_ENC
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS                    PD2
+    #endif
+
+    #define SD_DETECT_PIN                   PB9
+
   #else
 
     #define LCD_PINS_RS                     PC12

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE3.h

     #define DOGLCD_SCK                      PB13
     #define DOGLCD_MOSI                     PB15
 
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define TFTGLCD_CS                    PB11
+    #endif
+
   #else                                           // !MKS_MINI_12864
 
     #define LCD_PINS_D4                     PA6

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h

     #define DOGLCD_SCK                      PA5
     #define DOGLCD_MOSI                     PA7
 
+  #elif IS_TFTGLCD_PANEL
+
+    #if ENABLED(TFTGLCD_PANEL_SPI)
+      #define PIN_SPI_SCK                   PA5
+      #define PIN_TFT_MISO                  PA6
+      #define PIN_TFT_MOSI                  PA7
+      #define TFTGLCD_CS                    PE8
+    #endif
+
+    #ifndef BEEPER_PIN
+      #define BEEPER_PIN                    -1
+    #endif
+
   #else                                           // !MKS_MINI_12864
 
     #define LCD_PINS_D4                     PE14

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h

     #define BTN_EN2                         PG4
   #endif
 
+#elif IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define TFTGLCD_CS                      PG5
+  #endif
+
 #elif HAS_WIRED_LCD
 
   #define BEEPER_PIN                        PC5
     #endif
 
   #endif // !MKS_MINI_12864 && !ENDER2_STOCKDISPLAY
+
 #endif
 
 #ifndef BOARD_ST7920_DELAY_1

Marlin/src/pins/stm32f4/pins_BTT_SKR_PRO_common.h

 //
 // LCDs and Controllers
 //
-#if HAS_WIRED_LCD
+#if IS_TFTGLCD_PANEL
+
+  #if ENABLED(TFTGLCD_PANEL_SPI)
+    #define TFTGLCD_CS                      PG10
+  #endif
+
+#elif HAS_WIRED_LCD
+
   #define BEEPER_PIN                        PG4
   #define BTN_ENC                           PA8
 

buildroot/tests/LPC1769-tests

 opt_set GRID_MAX_POINTS_X 16
 exec_test $1 $2 "Smoothieboard with many features"
 
+restore_configs
+opt_set MOTHERBOARD BOARD_SMOOTHIEBOARD
+opt_set EXTRUDERS 2
+opt_set TEMP_SENSOR_1 -1
+opt_set TEMP_SENSOR_BED 5
+opt_enable TFTGLCD_PANEL_SPI SDSUPPORT ADAPTIVE_FAN_SLOWING NO_FAN_SLOWING_IN_PID_TUNING \
+           FIX_MOUNTED_PROBE AUTO_BED_LEVELING_BILINEAR G29_RETRY_AND_RECOVER Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
+           BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET \
+           PRINTCOUNTER NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE SLOW_PWM_HEATERS PIDTEMPBED EEPROM_SETTINGS INCH_MODE_SUPPORT TEMPERATURE_UNITS_SUPPORT \
+           Z_SAFE_HOMING ADVANCED_PAUSE_FEATURE PARK_HEAD_ON_PAUSE \
+           LCD_INFO_MENU ARC_SUPPORT BEZIER_CURVE_SUPPORT EXTENDED_CAPABILITIES_REPORT AUTO_REPORT_TEMPERATURES SDCARD_SORT_ALPHA EMERGENCY_PARSER
+opt_set GRID_MAX_POINTS_X 16
+exec_test $1 $2 "Smoothieboard with TFTGLCD_PANEL_SPI"
+
 #restore_configs
 #opt_set MOTHERBOARD BOARD_AZTEEG_X5_MINI_WIFI
 #opt_enable COREYX USE_XMAX_PLUG DAC_MOTOR_CURRENT_DEFAULT \

platformio.ini

 #
 [common]
 default_src_filter = +<src/*> -<src/config> -<src/HAL> +<src/HAL/shared>
-  -<src/lcd/HD44780> -<src/lcd/dwin> -<src/lcd/dogm> -<src/lcd/tft>
+  -<src/lcd/HD44780> -<src/lcd/TFTGLCD> -<src/lcd/dwin> -<src/lcd/dogm> -<src/lcd/tft>
   -<src/lcd/menu>
   -<src/lcd/menu/game/game.cpp> -<src/lcd/menu/game/brickout.cpp> -<src/lcd/menu/game/invaders.cpp>
   -<src/lcd/menu/game/maze.cpp> -<src/lcd/menu/game/snake.cpp>
                           src_filter=+<src/lcd/dogm>
 HAS_GRAPHICAL_TFT       = src_filter=+<src/lcd/tft>
 DWIN_CREALITY_LCD       = src_filter=+<src/lcd/dwin>
+IS_TFTGLCD_PANEL        = src_filter=+<src/lcd/TFTGLCD>
 HAS_LCD_MENU            = src_filter=+<src/lcd/menu>
 HAS_GAMES               = src_filter=+<src/lcd/menu/game/game.cpp>
 MARLIN_BRICKOUT         = src_filter=+<src/lcd/menu/game/brickout.cpp>