Fixes for FYSETC Touch EVE 5" on AVR (#17659)

Co-Authored-By: RudolphRiedel <rudolphriedel@users.noreply.github.com>
Co-authored-by: sL1pKn07 <sl1pkn07@gmail.com>

Marlin/Configuration_adv.h

@@ -1379,6 +1379,8 @@
   //#define AO_EXP2_PINMAP      // AlephObjects CLCD UI EXP2 mapping
   //#define CR10_TFT_PINMAP     // Rudolph Riedel's CR10 pin mapping
   //#define S6_TFT_PINMAP       // FYSETC S6 pin mapping
+  //#define E3_EXP1_PINMAP      // E3 type boards (SKR E3/DIP, FYSETC Cheetah and Stock boards) EXP1 pin mapping
+  //#define GENERIC_EXP2_PINMAP // GENERIC EXP2 pin mapping
 
   //#define OTHER_PIN_LAYOUT  // Define pins manually below
   #if ENABLED(OTHER_PIN_LAYOUT)

Marlin/src/inc/Conditionals_LCD.h

@@ -361,7 +361,7 @@
   #define HAS_DGUS_LCD 1
 #endif
 
-// Extensible UI serial touch screens. (See src/lcd/extensible_ui)
+// Extensible UI serial touch screens. (See src/lcd/extui)
 #if ANY(HAS_DGUS_LCD, MALYAN_LCD, TOUCH_UI_FTDI_EVE)
   #define IS_EXTUI
   #define EXTENSIBLE_UI

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/commands.cpp

@@ -198,7 +198,7 @@ void CLCD::mem_write_16 (uint32_t reg_address, uint16_t data) {
   using namespace SPI::least_significant_byte_first;
   spi_ftdi_select();
   spi_write_addr(reg_address);
-  spi_write_32(data);
+  spi_write_16(data);
   spi_ftdi_deselect();
 }
 
@@ -1054,13 +1054,7 @@ void CLCD::init() {
   spi_init();                                  // Set Up I/O Lines for SPI and FT800/810 Control
   ftdi_reset();                                // Power down/up the FT8xx with the apropriate delays
 
-  if (Use_Crystal == 1) {
+  host_cmd(Use_Crystal ? CLKEXT : CLKINT, 0);
-    host_cmd(CLKEXT, 0);
-  }
-  else {
-    host_cmd(CLKINT, 0);
-  }
-
   host_cmd(FTDI::ACTIVE, 0);                        // Activate the System Clock
 
   /* read the device-id until it returns 0x7c or times out, should take less than 150ms */
@@ -1073,9 +1067,9 @@ void CLCD::init() {
      #endif
      break;
    }
-   else {
+   else
      delay(1);
-   }
+
    if (counter == 249) {
      #if ENABLED(TOUCH_UI_DEBUG)
        SERIAL_ECHO_START();
@@ -1130,7 +1124,7 @@ void CLCD::init() {
 
   mem_write_8(REG::PCLK, Pclk); // Turns on Clock by setting PCLK Register to the value necessary for the module
 
-  mem_write_16(REG::PWM_HZ,  0x00FA);
+  mem_write_16(REG::PWM_HZ, ENABLED(LCD_FYSETC_TFT81050) ? 0x2710 : 0x00FA);
 
   // Turning off dithering seems to help prevent horizontal line artifacts on certain colors
   mem_write_8(REG::DITHER,  0);

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/spi.cpp

@@ -27,7 +27,11 @@
 /********************************* SPI Functions *********************************/
 
 namespace FTDI {
+
   #ifndef CLCD_USE_SOFT_SPI
+    #ifndef __AVR__
+      SPIClass EVE_SPI(CLCD_SPI_BUS);
+    #endif
     SPISettings SPI::spi_settings(SPI_FREQUENCY, MSBFIRST, SPI_MODE0);
   #endif
 
@@ -57,7 +61,7 @@ namespace FTDI {
 
       SET_INPUT_PULLUP(CLCD_SOFT_SPI_MISO);
     #else
-      ::SPI.begin();
+      SPI_OBJ.begin();
     #endif
   }
 
@@ -71,8 +75,8 @@ namespace FTDI {
       for (k = 0; k < 8; k++) {  // Output and Read each bit of spiOutByte and spiInByte
         WRITE(CLCD_SOFT_SPI_MOSI, (spiOutByte & spiIndex) ? 1 : 0); // Output MOSI Bit
         WRITE(CLCD_SOFT_SPI_SCLK, 1);   // Pulse Clock
+        if (READ(CLCD_SOFT_SPI_MISO)) spiInByte |= spiIndex; // MISO changes on the falling edge of clock, so sample it before
         WRITE(CLCD_SOFT_SPI_SCLK, 0);
-        if (READ(CLCD_SOFT_SPI_MISO)) spiInByte |= spiIndex;
         spiIndex >>= 1;
       }
       interrupts();
@@ -97,11 +101,7 @@ namespace FTDI {
 
   void SPI::spi_read_bulk(void *data, uint16_t len) {
     uint8_t* p = (uint8_t *)data;
-    #ifndef CLCD_USE_SOFT_SPI
-      ::SPI.transfer(p, len);
-    #else
     while (len--) *p++ = spi_recv();
-    #endif
   }
 
   bool SPI::spi_verify_bulk(const void *data, uint16_t len) {
@@ -113,7 +113,7 @@ namespace FTDI {
   // CLCD SPI - Chip Select
   void SPI::spi_ftdi_select() {
     #ifndef CLCD_USE_SOFT_SPI
-      ::SPI.beginTransaction(spi_settings);
+      SPI_OBJ.beginTransaction(spi_settings);
     #endif
     WRITE(CLCD_SPI_CS, 0);
     #ifdef CLCD_SPI_EXTRA_CS
@@ -129,7 +129,7 @@ namespace FTDI {
       WRITE(CLCD_SPI_EXTRA_CS, 1);
     #endif
     #ifndef CLCD_USE_SOFT_SPI
-      ::SPI.endTransaction();
+      SPI_OBJ.endTransaction();
     #endif
   }
 
@@ -137,7 +137,7 @@ namespace FTDI {
   // Serial SPI Flash SPI - Chip Select
   void SPI::spi_flash_select() {
     #ifndef CLCD_USE_SOFT_SPI
-    ::SPI.beginTransaction(spi_settings);
+      SPI_OBJ.beginTransaction(spi_settings);
     #endif
     WRITE(SPI_FLASH_SS, 0);
     delayMicroseconds(1);
@@ -147,7 +147,7 @@ namespace FTDI {
   void SPI::spi_flash_deselect() {
     WRITE(SPI_FLASH_SS, 1);
     #ifndef CLCD_USE_SOFT_SPI
-    ::SPI.endTransaction();
+      SPI_OBJ.endTransaction();
     #endif
   }
   #endif

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/basic/spi.h

@@ -27,6 +27,14 @@
 #endif
 
 namespace FTDI {
+
+  #if defined(__AVR__) || defined(CLCD_USE_SOFT_SPI)
+    #define SPI_OBJ ::SPI
+  #else
+    extern SPIClass EVE_SPI;
+    #define SPI_OBJ EVE_SPI
+  #endif
+
   namespace SPI {
     #ifndef CLCD_USE_SOFT_SPI
       extern SPISettings spi_settings;
@@ -47,7 +55,7 @@ namespace FTDI {
       #ifdef CLCD_USE_SOFT_SPI
         return _soft_spi_xfer(0x00);
       #else
-        return ::SPI.transfer(0x00);
+        SPI_OBJ.transfer(0x00);
       #endif
     };
 
@@ -55,7 +63,7 @@ namespace FTDI {
       #ifdef CLCD_USE_SOFT_SPI
         _soft_spi_send(val);
       #else
-        ::SPI.transfer(val);
+        SPI_OBJ.transfer(val);
       #endif
     };
 

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/ftdi_eve_lib/extended/sound_list.h

@@ -30,9 +30,9 @@ class SoundList {
   public:
     static const uint8_t n;
     static inline const char* name(uint8_t val) {
-      return (const char* ) pgm_read_ptr_near(&list[val].name);
+      return (const char* ) pgm_read_ptr_far(&list[val].name);
     }
     static inline FTDI::SoundPlayer::sound_t* data(uint8_t val) {
-      return (FTDI::SoundPlayer::sound_t*) pgm_read_ptr_near(&list[val].data);
+      return (FTDI::SoundPlayer::sound_t*) pgm_read_ptr_far(&list[val].data);
     }
 };

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/pin_mappings.h

@@ -154,3 +154,12 @@
     #define CLCD_SPI_EXTRA_CS            SDSS
   #endif
 #endif
+
+#if EITHER(E3_EXP1_PINMAP, GENERIC_EXP2_PINMAP)
+  #ifndef __MARLIN_FIRMWARE__
+    #error "This pin mapping requires Marlin."
+  #endif
+
+  #define CLCD_MOD_RESET                 BTN_EN1
+  #define CLCD_SPI_CS                    LCD_PINS_RS
+#endif

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/about_screen.cpp

@@ -82,7 +82,7 @@ void AboutScreen::onRedraw(draw_mode_t) {
   );
   draw_text_box(cmd, FW_VERS_POS, progmem_str(getFirmwareName_str()), OPT_CENTER, font_medium);
   draw_text_box(cmd, FW_INFO_POS, about_str, OPT_CENTER, font_medium);
-  draw_text_box(cmd, INSET_POS(LICENSE_POS), GET_TEXT_F(MSG_LICENSE), OPT_CENTER, font_tiny);
+  draw_text_box(cmd.tag(3), INSET_POS(LICENSE_POS), GET_TEXT_F(MSG_LICENSE), OPT_CENTER, font_tiny);
 
   cmd.font(font_medium)
      .colors(normal_btn)

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/interface_settings_screen.cpp

@@ -74,7 +74,9 @@ void InterfaceSettingsScreen::onRedraw(draw_mode_t what) {
     #define EDGE_R 30
        .font(font_small)
        .tag(0)
+    #if DISABLED(LCD_FYSETC_TFT81050)
        .text(BTN_POS(1,2), BTN_SIZE(2,1), GET_TEXT_F(MSG_LCD_BRIGHTNESS), OPT_RIGHTX | OPT_CENTERY)
+    #endif
        .text(BTN_POS(1,3), BTN_SIZE(2,1), GET_TEXT_F(MSG_SOUND_VOLUME),   OPT_RIGHTX | OPT_CENTERY)
        .text(BTN_POS(1,4), BTN_SIZE(2,1), GET_TEXT_F(MSG_SCREEN_LOCK),    OPT_RIGHTX | OPT_CENTERY);
     #if DISABLED(TOUCH_UI_NO_BOOTSCREEN)
@@ -93,7 +95,9 @@ void InterfaceSettingsScreen::onRedraw(draw_mode_t what) {
     cmd.font(font_medium)
     #define EDGE_R 30
        .colors(ui_slider)
+    #if DISABLED(LCD_FYSETC_TFT81050)
        .tag(2).slider(BTN_POS(3,2), BTN_SIZE(2,1), screen_data.InterfaceSettingsScreen.brightness, 128)
+    #endif
        .tag(3).slider(BTN_POS(3,3), BTN_SIZE(2,1), screen_data.InterfaceSettingsScreen.volume,     0xFF)
        .colors(ui_toggle)
        .tag(4).toggle2(BTN_POS(3,4), BTN_SIZE(w,1), GET_TEXT_F(MSG_NO), GET_TEXT_F(MSG_YES), LockScreen::is_enabled())

Marlin/src/pins/ramps/pins_RAMPS.h

@@ -721,3 +721,47 @@
     #define BTN_ENC                           63
   #endif
 #endif
+
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+
+  #error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_RAMPS.h' for details. Comment out this line to continue."
+
+  /** FYSECT TFT TFT81050 display pinout
+   *
+   *               Board                                     Display
+   *               _____                                     _____
+   *  (SCK)   D52 | 1 2 | D50    (MISO)                MISO | 1 2 | SCK
+   *  (SD_CS) D53 | 3 4 | D33 (BNT_EN2) (BNT_EN2) MOD_RESET | 3 4 | SD_CS
+   *  (MOSI)  D51 | 5 6   D31 (BNT_EN1) (BNT_EN1)    LCD_CS | 5 6   MOSI
+   *        RESET | 7 8 | D49  (SD_DET)              SD_DET | 7 8 | RESET
+   *           NC | 9 10| GND                           GND | 9 10| 5V
+   *               -----                                     -----
+   *                EXP2                                      EXP1
+   *
+   * Needs custom cable:
+   *
+   *    Board   Adapter   Display
+   *           _________
+   *   EXP2-1 ----------- EXP1-10
+   *   EXP2-2 ----------- EXP1-9
+   *   EXP2-4 ----------- EXP1-8
+   *   EXP2-4 ----------- EXP1-7
+   *   EXP2-3 ----------- EXP1-6
+   *   EXP2-6 ----------- EXP1-5
+   *   EXP2-7 ----------- EXP1-4
+   *   EXP2-8 ----------- EXP1-3
+   *   EXP2-1 ----------- EXP1-2
+   *  EXT1-10 ----------- EXP1-1
+   *
+   */
+
+  #define BEEPER_PIN                          37
+
+  #define BTN_EN1                             31
+  #define LCD_PINS_RS                         33
+
+  #define SD_DETECT_PIN                       49
+
+  #define KILL_PIN                            -1
+
+#endif // TOUCH_UI_FTDI_EVE && LCD_FYSETC_TFT81050

Marlin/src/pins/stm32f1/pins_BTT_SKR_E3_DIP.h

@@ -47,20 +47,20 @@
 //
 // Limit Switches
 //
-#define X_STOP_PIN                          PC1   // X-STOP
+#define X_STOP_PIN                          PC1   // "X-STOP"
-#define Y_STOP_PIN                          PC0   // Y-STOP
+#define Y_STOP_PIN                          PC0   // "Y-STOP"
-#define Z_STOP_PIN                          PC15  // Z-STOP
+#define Z_STOP_PIN                          PC15  // "Z-STOP"
 
 //
 // Z Probe must be this pin
 //
-#define Z_MIN_PROBE_PIN                     PC14  // PROBE
+#define Z_MIN_PROBE_PIN                     PC14  // "PROBE"
 
 //
 // Filament Runout Sensor
 //
 #ifndef FIL_RUNOUT_PIN
-  #define FIL_RUNOUT_PIN                    PC2   // E0-STOP
+  #define FIL_RUNOUT_PIN                    PC2   // "E0-STOP"
 #endif
 
 //
@@ -149,9 +149,9 @@
 //
 // Heaters / Fans
 //
-#define HEATER_0_PIN                        PC8   // HE
+#define HEATER_0_PIN                        PC8   // "HE"
-#define HEATER_BED_PIN                      PC9   // HB
+#define HEATER_BED_PIN                      PC9   // "HB"
-#define FAN_PIN                             PA8   // FAN0
+#define FAN_PIN                             PA8   // "FAN0"
 
 //
 // USB connect control
@@ -159,8 +159,6 @@
 #define USB_CONNECT_PIN                     PC13
 #define USB_CONNECT_INVERTING false
 
-#define SD_DETECT_PIN                       PC4
-
 /**
  *                 _____
  *             5V | 1 2 | GND
@@ -182,18 +180,31 @@
 #define EXPA1_10_PIN                        PA15
 
 #if HAS_SPI_LCD
-  #define BTN_ENC                   EXPA1_09_PIN
-  #define BTN_EN1                   EXPA1_08_PIN
-  #define BTN_EN2                   EXPA1_06_PIN
 
   #if ENABLED(CR10_STOCKDISPLAY)
 
     #define BEEPER_PIN              EXPA1_10_PIN
 
+    #define BTN_ENC                 EXPA1_09_PIN
+    #define BTN_EN1                 EXPA1_08_PIN
+    #define BTN_EN2                 EXPA1_06_PIN
+
     #define LCD_PINS_RS             EXPA1_04_PIN
     #define LCD_PINS_ENABLE         EXPA1_03_PIN
     #define LCD_PINS_D4             EXPA1_05_PIN
 
+  #elif ENABLED(ZONESTAR_LCD)                     // ANET A8 LCD Controller - Must convert to 3.3V - CONNECTING TO 5V WILL DAMAGE THE BOARD!
+
+    #error "CAUTION! ZONESTAR_LCD requires wiring modifications. See 'pins_BTT_SKR_MINI_E3.h' for details. Comment out this line to continue."
+
+    #define LCD_PINS_RS             EXPA1_05_PIN
+    #define LCD_PINS_ENABLE         EXPA1_09_PIN
+    #define LCD_PINS_D4             EXPA1_04_PIN
+    #define LCD_PINS_D5             EXPA1_06_PIN
+    #define LCD_PINS_D6             EXPA1_08_PIN
+    #define LCD_PINS_D7             EXPA1_10_PIN
+    #define ADC_KEYPAD_PIN                  PA1   // Repurpose servo pin for ADC - CONNECTING TO 5V WILL DAMAGE THE BOARD!
+
   #elif EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
 
     /** Creality Ender-2 display pinout
@@ -207,6 +218,10 @@
      *                    EXP1
      */
 
+    #define BTN_ENC                 EXPA1_09_PIN
+    #define BTN_EN1                 EXPA1_08_PIN
+    #define BTN_EN2                 EXPA1_06_PIN
+
     #define DOGLCD_CS               EXPA1_04_PIN
     #define DOGLCD_A0               EXPA1_05_PIN
     #define DOGLCD_SCK              EXPA1_10_PIN
@@ -215,17 +230,71 @@
     #define LCD_BACKLIGHT_PIN               -1
 
   #else
-    #error "Only CR10_STOCKDISPLAY, ENDER2_STOCKDISPLAY, and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_E3_DIP."
+    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_E3_DIP."
   #endif
 
 #endif // HAS_SPI_LCD
 
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+
+  #error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_BTT_SKR_E3_DIP.h' for details. Comment out this line to continue."
+
+  /** FYSECT TFT TFT81050 display pinout
+   *
+   *               Board                                     Display
+   *               _____                                      _____
+   *           5V | 1 2 | GND               (SPI1-MISO) MISO | 1 2 | SCK   (SPI1-SCK)
+   * (FREE)   PB7 | 3 4 | PB8  (LCD_CS)     (PA9)  MOD_RESET | 3 4 | SD_CS (PA10)
+   * (FREE)   PB9 | 5 6   PA10 (SD_CS)      (PB8)     LCD_CS | 5 6   MOSI  (SPI1-MOSI)
+   *        RESET | 7 8 | PA9  (MOD_RESET)  (PA15)    SD_DET | 7 8 | RESET
+   * (BEEPER) PB6 | 9 10| PA15 (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 ----------- EXP1-5
+   *   SP11-3 ----------- EXP1-2
+   *   EXP1-6 ----------- EXP1-4
+   *   EXP1-7 ----------- EXP1-8
+   *   EXP1-8 ----------- EXP1-3
+   *   SPI1-1 ----------- EXP1-1
+   *  EXT1-10 ----------- EXP1-4
+   *
+   */
+
+  #define CLCD_SPI_BUS 1                          // SPI1 connector
+
+  #define BEEPER_PIN                EXPA1_09_PIN
+
+  #define BTN_EN1                   EXPA1_08_PIN
+  #define LCD_PINS_RS               EXPA1_04_PIN
+
+#endif // TOUCH_UI_FTDI_EVE && LCD_FYSETC_TFT81050
+
 //
 // SD Support
 //
+
 #ifndef SDCARD_CONNECTION
   #define SDCARD_CONNECTION              ONBOARD
 #endif
 
+#if SD_CONNECTION_IS(ONBOARD)
+  #define SD_DETECT_PIN                     PC4
+#endif
+
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) && SD_CONNECTION_IS(LCD)
+  #define SD_DETECT_PIN             EXPA1_10_PIN
+  #define SS_PIN                    EXPA1_06_PIN
+#elif SD_CONNECTION_IS(CUSTOM_CABLE)
+  #error "SD CUSTOM_CABLE is not compatible with SKR E3 DIP."
+#endif
+
 #define ON_BOARD_SPI_DEVICE 1                     // SPI1
 #define ONBOARD_SD_CS_PIN                   PA4   // Chip select for "System" SD card

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_E3.h

@@ -40,19 +40,19 @@
 //
 // Servos
 //
-#define SERVO0_PIN                          PA1
+#define SERVO0_PIN                          PA1   // "SERVOS"
 
 //
 // Limit Switches
 //
-#define X_STOP_PIN                          PC0
+#define X_STOP_PIN                          PC0   // "X-STOP"
-#define Y_STOP_PIN                          PC1
+#define Y_STOP_PIN                          PC1   // "Y-STOP"
-#define Z_STOP_PIN                          PC2
+#define Z_STOP_PIN                          PC2   // "Z-STOP"
 
 //
-// Z Probe must be this pins
+// Z Probe must be this pin
 //
-#define Z_MIN_PROBE_PIN                     PC14
+#define Z_MIN_PROBE_PIN                     PC14  // "PROBE"
 
 //
 // Filament Runout Sensor
@@ -83,15 +83,15 @@
 //
 // Temperature Sensors
 //
-#define TEMP_0_PIN                          PA0   // Analog Input
+#define TEMP_0_PIN                          PA0   // Analog Input "TH0"
-#define TEMP_BED_PIN                        PC3   // Analog Input
+#define TEMP_BED_PIN                        PC3   // Analog Input "TB0"
 
 //
 // Heaters / Fans
 //
-#define HEATER_0_PIN                        PC8   // EXTRUDER
+#define HEATER_0_PIN                        PC8   // "HE"
-#define HEATER_BED_PIN                      PC9   // BED
+#define HEATER_BED_PIN                      PC9   // "HB"
-#define FAN_PIN                             PA8
+#define FAN_PIN                             PA8   // "FAN0"
 
 //
 // USB connect control
@@ -99,8 +99,6 @@
 #define USB_CONNECT_PIN                     PC13
 #define USB_CONNECT_INVERTING false
 
-#define SD_DETECT_PIN                       PC4
-
 /**
  *                 _____
  *             5V | 1 2 | GND
@@ -127,9 +125,9 @@
 
     #define BEEPER_PIN              EXPA1_10_PIN
 
+    #define BTN_ENC                 EXPA1_09_PIN
     #define BTN_EN1                 EXPA1_08_PIN
     #define BTN_EN2                 EXPA1_06_PIN
-    #define BTN_ENC                 EXPA1_09_PIN
 
     #define LCD_PINS_RS             EXPA1_04_PIN
     #define LCD_PINS_ENABLE         EXPA1_03_PIN
@@ -159,9 +157,10 @@
      *                   -----
      *                    EXP1
      */
+
+    #define BTN_ENC                 EXPA1_09_PIN
     #define BTN_EN1                 EXPA1_08_PIN
     #define BTN_EN2                 EXPA1_06_PIN
-    #define BTN_ENC                 EXPA1_09_PIN
 
     #define DOGLCD_CS               EXPA1_04_PIN
     #define DOGLCD_A0               EXPA1_05_PIN
@@ -171,19 +170,73 @@
     #define LCD_BACKLIGHT_PIN               -1
 
   #else
-
+    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, and MKS_MINI_12864 are currently supported on the BIGTREE_SKR_MINI_E3."
-    #error "Only ZONESTAR_LCD, MKS_MINI_12864, ENDER2_STOCKDISPLAY, and CR10_STOCKDISPLAY are currently supported on the BIGTREE_SKR_MINI_E3."
-
   #endif
 
 #endif // HAS_SPI_LCD
 
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+
+  #error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_BTT_SKR_MINI_E3.h' for details. Comment out this line to continue."
+
+  /** FYSECT TFT TFT81050 display pinout
+   *
+   *               Board                                      Display
+   *               _____                                       _____
+   *           5V | 1 2 | GND                (SPI1-MISO) MISO | 1 2 | SCK   (SPI1-SCK)
+   * (FREE)   PB7 | 3 4 | PB8  (LCD_CS)      (PA9)  MOD_RESET | 3 4 | SD_CS (PA10)
+   * (FREE)   PB9 | 5 6   PA10 (SD_CS)       (PB8)     LCD_CS | 5 6   MOSI  (SPI1-MOSI)
+   *        RESET | 7 8 | PA9  (MOD_RESET)   (PB5)     SD_DET | 7 8 | RESET
+   * (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 ----------- EXP1-5
+   *   SPI1-3 ----------- EXP1-2
+   *   EXP1-6 ----------- EXP1-4
+   *   EXP1-7 ----------- EXP1-8
+   *   EXP1-8 ----------- EXP1-3
+   *   SPI1-1 ----------- EXP1-1
+   *  EXP1-10 ----------- EXP1-4
+   *
+   */
+
+  #define CLCD_SPI_BUS 1                          // SPI1 connector
+
+  #define BEEPER_PIN                EXPA1_09_PIN
+
+  #define BTN_EN1                   EXPA1_08_PIN
+  #define LCD_PINS_RS               EXPA1_04_PIN
+  #define LCD_PINS_ENABLE           EXPA1_03_PIN
+  #define LCD_PINS_D4               EXPA1_05_PIN
+
+#endif // TOUCH_UI_FTDI_EVE && LCD_FYSETC_TFT81050
+
 //
 // SD Support
 //
+
 #ifndef SDCARD_CONNECTION
   #define SDCARD_CONNECTION              ONBOARD
 #endif
 
+#if SD_CONNECTION_IS(ONBOARD)
+  #define SD_DETECT_PIN                     PC4
+#endif
+
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) && SD_CONNECTION_IS(LCD)
+  #define SD_DETECT_PIN             EXPA1_10_PIN
+  #define SS_PIN                    EXPA1_06_PIN
+#elif SD_CONNECTION_IS(CUSTOM_CABLE)
+  #error "SD CUSTOM_CABLE is not compatible with SKR Mini E3."
+#endif
+
 #define ON_BOARD_SPI_DEVICE 1                     // SPI1
 #define ONBOARD_SD_CS_PIN                   PA4   // Chip select for "System" SD card