📺 SKR_MINI_SCREEN_ADAPTER for BTT SKR Mini E3 V3 (#24521)

Marlin/src/pins/stm32g0/pins_BTT_SKR_MINI_E3_V3_0.h

   #define POWER_LOSS_PIN                    PC12  // Power Loss Detection: PWR-DET
 #endif
 
-#ifndef NEOPIXEL_PIN
-  #define NEOPIXEL_PIN                      PA8   // LED driving pin
-#endif
-
 #ifndef PS_ON_PIN
   #define PS_ON_PIN                         PC13  // Power Supply Control
 #endif
  *                  ------
  *                   EXP1
  */
+#define EXP1_01_PIN                         PB5
 #define EXP1_02_PIN                         PA15
+#define EXP1_03_PIN                         PA9
+#define EXP1_04_PIN                         -1
+#define EXP1_05_PIN                         PA10
+#define EXP1_06_PIN                         PB9
+#define EXP1_07_PIN                         PB8
 #define EXP1_08_PIN                         PD6
+#define EXP1_09_PIN                         -1
+#define EXP1_10_PIN                         -1
 
 #if HAS_DWIN_E3V2 || IS_DWIN_MARLINUI
   /**
 
   #define BEEPER_PIN                 EXP1_02_PIN
   #define BTN_EN1                    EXP1_08_PIN
-  #define BTN_EN2                           PB8
-  #define BTN_ENC                           PB5
+  #define BTN_EN2                    EXP1_07_PIN
+  #define BTN_ENC                    EXP1_01_PIN
 
 #elif HAS_WIRED_LCD
 
-  #if ENABLED(CR10_STOCKDISPLAY)
-
-    #define BEEPER_PIN                      PB5
-    #define BTN_ENC                  EXP1_02_PIN
-
-    #define BTN_EN1                         PA9
-    #define BTN_EN2                         PA10
-
-    #define LCD_PINS_RS                     PB8
-    #define LCD_PINS_ENABLE          EXP1_08_PIN
-    #define LCD_PINS_D4                     PB9
-
-  #elif ENABLED(ZONESTAR_LCD)                     // ANET A8 LCD Controller - Must convert to 3.3V - CONNECTING TO 5V WILL DAMAGE THE BOARD!
-
-    #ifndef NO_CONTROLLER_CUSTOM_WIRING_WARNING
-      #error "CAUTION! ZONESTAR_LCD requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. (Define NO_CONTROLLER_CUSTOM_WIRING_WARNING to suppress this warning.)"
+  #if ENABLED(SKR_MINI_SCREEN_ADAPTER)
+    /** https://github.com/VoronDesign/Voron-Hardware/tree/master/SKR-Mini_Screen_Adaptor/SRK%20Mini%20E3%20V3.0
+     *
+     *            SKR Mini E3 V3.0                   SKR Mini Screen Adaptor
+     *                 ------                                ------
+     *            5V  | 1  2 | GND                     MISO | 1  2 | SCK
+     *            CS  | 3  4 | SCK               (EN1) PA10 | 3  4 | --
+     *          MOSI  | 5  6 | MISO              (EN2)  PA9   5  6 | MOSI
+     *           3V3  | 7  8 | GND                       -- | 7  8 | --
+     *                 ------                           GND | 9  10| RESET (Kill)
+     *                  SPI                                  ------
+     *                                                        EXP2
+     *
+     *                 ------                                ------
+     *            PB5 | 1  2 | PA15                      -- | 1  2 | PB5  (BTN_ENC)
+     *            PA9 | 3  4 | RESET           (LCD CS) PB8 | 3  4 | PD6  (LCD_A0)
+     *           PA10   5  6 | PB9              (RESET) PB9   5  6 | PA15 (DIN)
+     *            PB8 | 7  8 | PD6                       -- | 7  8 | --
+     *            GND | 9  10| 5V                       GND | 9  10| 5V
+     *                 ------                                ------
+     *                  EXP1                                  EXP1
+     */
+    #if ENABLED(FYSETC_MINI_12864_2_1)
+      #define BTN_ENC                EXP1_01_PIN
+      #define BTN_EN1                EXP1_03_PIN
+      #define BTN_EN2                EXP1_05_PIN
+      #define BEEPER_PIN                    -1
+      #define LCD_RESET_PIN          EXP1_06_PIN
+      #define DOGLCD_CS              EXP1_07_PIN
+      #define DOGLCD_A0              EXP1_08_PIN
+      #define DOGLCD_SCK                    PA5
+      #define DOGLCD_MOSI                   PA7
+
+      #define FORCE_SOFT_SPI
+      #define LCD_BACKLIGHT_PIN             -1
+      #define NEOPIXEL_PIN           EXP1_02_PIN
+    #else
+      #error "Only CR10_FYSETC_MINI_12864_2_1 and compatibles are currently supported on the BIGTREE_SKR_MINI_E3 with SKR_MINI_SCREEN_ADAPTER"
     #endif
 
-    #define LCD_PINS_RS                     PB9
-    #define LCD_PINS_ENABLE          EXP1_02_PIN
-    #define LCD_PINS_D4                     PB8
-    #define LCD_PINS_D5                     PA10
-    #define LCD_PINS_D6                     PA9
-    #define LCD_PINS_D7                     PB5
-    #define ADC_KEYPAD_PIN                  PA1   // Repurpose servo pin for ADC - CONNECTING TO 5V WILL DAMAGE THE BOARD!
-
-  #elif EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
+  #else
 
-    #define BTN_ENC                  EXP1_02_PIN
-    #define BTN_EN1                         PA9
-    #define BTN_EN2                         PA10
+    #if ENABLED(CR10_STOCKDISPLAY)
 
-    #define DOGLCD_CS                       PB8
-    #define DOGLCD_A0                       PB9
-    #define DOGLCD_SCK                      PB5
-    #define DOGLCD_MOSI              EXP1_08_PIN
+      #define BEEPER_PIN             EXP1_01_PIN
+      #define BTN_ENC                EXP1_02_PIN
 
-    #define FORCE_SOFT_SPI
-    #define LCD_BACKLIGHT_PIN               -1
+      #define BTN_EN1                EXP1_03_PIN
+      #define BTN_EN2                EXP1_05_PIN
 
-  #elif IS_TFTGLCD_PANEL
+      #define LCD_PINS_RS            EXP1_07_PIN
+      #define LCD_PINS_ENABLE        EXP1_08_PIN
+      #define LCD_PINS_D4            EXP1_06_PIN
 
-    #if ENABLED(TFTGLCD_PANEL_SPI)
+    #elif ENABLED(ZONESTAR_LCD)                   // ANET A8 LCD Controller - Must convert to 3.3V - CONNECTING TO 5V WILL DAMAGE THE BOARD!
 
       #ifndef NO_CONTROLLER_CUSTOM_WIRING_WARNING
-        #error "CAUTION! TFTGLCD_PANEL_SPI requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. (Define NO_CONTROLLER_CUSTOM_WIRING_WARNING to suppress this warning.)"
+        #error "CAUTION! ZONESTAR_LCD requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. (Define NO_CONTROLLER_CUSTOM_WIRING_WARNING to suppress this warning.)"
       #endif
 
-      /**
-       * TFTGLCD_PANEL_SPI display pinout
-       *
-       *                 Board                               Display
-       *                 ------                               ------
-       * (BEEPER) PB6  | 1  2 | PB5  (SD_DET)             5V | 1  2 | GND
-       *         RESET | 3  4 | PA9  (MOD_RESET)          -- | 3  4 | (SD_DET)
-       *          PB9    5  6 | PA10 (SD_CS)         (MOSI)  | 5  6 | --
-       *          PB7  | 7  8 | PB8  (LCD_CS)        (SD_CS) | 7  8 | (LCD_CS)
-       *           GND | 9 10 | 5V                   (SCK)   | 9 10 | (MISO)
-       *                 ------                               ------
-       *                  EXP1                                 EXP1
-       *
-       * Needs custom cable:
-       *
-       *    Board             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 LCD_PINS_RS            EXP1_06_PIN
+      #define LCD_PINS_ENABLE        EXP1_02_PIN
+      #define LCD_PINS_D4            EXP1_07_PIN
+      #define LCD_PINS_D5            EXP1_05_PIN
+      #define LCD_PINS_D6            EXP1_03_PIN
+      #define LCD_PINS_D7            EXP1_01_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)
+
+      #define BTN_ENC                EXP1_02_PIN
+      #define BTN_EN1                EXP1_03_PIN
+      #define BTN_EN2                EXP1_05_PIN
+
+      #define DOGLCD_CS              EXP1_07_PIN
+      #define DOGLCD_A0              EXP1_06_PIN
+      #define DOGLCD_SCK             EXP1_01_PIN
+      #define DOGLCD_MOSI            EXP1_08_PIN
+
+      #define FORCE_SOFT_SPI
+      #define LCD_BACKLIGHT_PIN             -1
+
+    #elif IS_TFTGLCD_PANEL
+
+      #if ENABLED(TFTGLCD_PANEL_SPI)
+
+        #ifndef NO_CONTROLLER_CUSTOM_WIRING_WARNING
+          #error "CAUTION! TFTGLCD_PANEL_SPI requires wiring modifications. See 'pins_BTT_SKR_MINI_E3_common.h' for details. (Define NO_CONTROLLER_CUSTOM_WIRING_WARNING to suppress this warning.)"
+        #endif
+
+        /**
+         * TFTGLCD_PANEL_SPI display pinout
+         *
+         *                 Board                               Display
+         *                 ------                               ------
+         * (BEEPER) PB6  | 1  2 | PB5  (SD_DET)             5V | 1  2 | GND
+         *         RESET | 3  4 | PA9  (MOD_RESET)          -- | 3  4 | (SD_DET)
+         *          PB9    5  6 | PA10 (SD_CS)         (MOSI)  | 5  6 | --
+         *          PB7  | 7  8 | PB8  (LCD_CS)        (SD_CS) | 7  8 | (LCD_CS)
+         *           GND | 9 10 | 5V                   (SCK)   | 9 10 | (MISO)
+         *                 ------                               ------
+         *                  EXP1                                 EXP1
+         *
+         * Needs custom cable:
+         *
+         *    Board             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           EXP1_03_PIN
 
-      #define TFTGLCD_CS                    PA9
-
-    #endif
+      #endif
 
-  #elif ENABLED(FYSETC_MINI_12864_2_1)
+    #elif ENABLED(FYSETC_MINI_12864_2_1)
 
       #ifndef NO_CONTROLLER_CUSTOM_WIRING_WARNING
         #error "CAUTION! FYSETC_MINI_12864_2_1 and clones require wiring modifications. See 'pins_BTT_SKR_MINI_E3_V3_0.h' for details. Define NO_CONTROLLER_CUSTOM_WIRING_WARNING to suppress this warning"
        * Check twice index position!!! (marked as # here)
        * On BTT boards pins from IDC10 connector are numbered in unusual order.
        */
-    #define BTN_ENC                  EXP1_02_PIN
-    #define BTN_EN1                         PB9
-    #define BTN_EN2                         PB5
-    #define BEEPER_PIN                      -1
+      #define BTN_ENC                EXP1_02_PIN
+      #define BTN_EN1                EXP1_06_PIN
+      #define BTN_EN2                EXP1_01_PIN
+      #define BEEPER_PIN                    -1
 
-    #define DOGLCD_CS                       PA9
-    #define DOGLCD_A0                       PA10
-    #define DOGLCD_SCK                      PB8
-    #define DOGLCD_MOSI                     PD6
+      #define DOGLCD_CS              EXP1_03_PIN
+      #define DOGLCD_A0              EXP1_05_PIN
+      #define DOGLCD_SCK             EXP1_07_PIN
+      #define DOGLCD_MOSI            EXP1_08_PIN
 
-    #define FORCE_SOFT_SPI
-    #define LCD_BACKLIGHT_PIN               -1
+      #define FORCE_SOFT_SPI
+      #define LCD_BACKLIGHT_PIN             -1
 
-  #else
-    #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, MKS_MINI_12864, FYSETC_MINI_12864_2_1, and TFTGLCD_PANEL_(SPI|I2C) are currently supported on the BIGTREE_SKR_MINI_E3."
-  #endif
+    #else
+      #error "Only CR10_STOCKDISPLAY, ZONESTAR_LCD, ENDER2_STOCKDISPLAY, MKS_MINI_12864, FYSETC_MINI_12864_2_1, and TFTGLCD_PANEL_(SPI|I2C) are currently supported on the BIGTREE_SKR_MINI_E3."
+    #endif
+
+  #endif // SKR_MINI_SCREEN_ADAPTER
 
 #endif // HAS_WIRED_LCD
 
 
   #define BEEPER_PIN                 EXP1_02_PIN
 
-  #define CLCD_MOD_RESET                    PA9
-  #define CLCD_SPI_CS                       PB8
-
+  #define CLCD_MOD_RESET             EXP1_03_PIN
+  #define CLCD_SPI_CS                EXP1_07_PIN
 #endif // TOUCH_UI_FTDI_EVE && LCD_FYSETC_TFT81050
 
 //
 #if SD_CONNECTION_IS(ONBOARD)
   #define SD_DETECT_PIN                     PC3
 #elif SD_CONNECTION_IS(LCD) && (BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050) || IS_TFTGLCD_PANEL)
-  #define SD_DETECT_PIN                     PB5
-  #define SD_SS_PIN                         PA10
+  #define SD_DETECT_PIN              EXP1_01_PIN
+  #define SD_SS_PIN                  EXP1_05_PIN
 #elif SD_CONNECTION_IS(CUSTOM_CABLE)
   #error "SD CUSTOM_CABLE is not compatible with SKR Mini E3."
 #endif
 #define SD_SCK_PIN                          PA5
 #define SD_MISO_PIN                         PA6
 #define SD_MOSI_PIN                         PA7
+
+//
+// Default NEOPIXEL_PIN
+//
+#ifndef NEOPIXEL_PIN
+  #define NEOPIXEL_PIN                      PA8   // LED driving pin
+#endif