✨ WYH L12864 LCD (Alfawise Ex8) (#22863)

Marlin/Configuration.h

 //#define miniVIKI
 
 //
+// Alfawise Ex8 printer LCD marked as WYH L12864 COG
+//
+//#define WYH_L12864
+
+//
 // MakerLab Mini Panel with graphic
 // controller and SD support - https://reprap.org/wiki/Mini_panel
 //

Marlin/Configuration_adv.h

    * Set STATUS_EXPIRE_SECONDS to zero to never clear the status.
    * This will prevent position updates from being displayed.
    */
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     // Enable this option and reduce the value to optimize screen updates.
     // The normal delay is 10µs. Use the lowest value that still gives a reliable display.
     //#define DOGM_SPI_DELAY_US 5

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_st7920_sw_spi.cpp

 
 #include "../../../inc/MarlinConfigPre.h"
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
 
 #include "../../../inc/MarlinConfig.h"
 #include "../../shared/Delay.h"
   }
 #endif // LIGHTWEIGHT_UI
 
-#endif // U8GLIB_ST7920
+#endif // IS_U8GLIB_ST7920
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_sw_spi.cpp

 
 #include "../../../inc/MarlinConfigPre.h"
 
-#if HAS_MARLINUI_U8GLIB && DISABLED(U8GLIB_ST7920)
+#if HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 
 #include "u8g_com_HAL_DUE_sw_spi_shared.h"
 
   return 1;
 }
 
-#endif // HAS_MARLINUI_U8GLIB && !U8GLIB_ST7920
+#endif // HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/LPC1768/u8g/u8g_com_HAL_LPC1768_st7920_sw_spi.cpp

 
 #include "../../../inc/MarlinConfigPre.h"
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
 
 #include <U8glib-HAL.h>
 #include <SoftwareSPI.h>
   return 1;
 }
 
-#endif // U8GLIB_ST7920
+#endif // IS_U8GLIB_ST7920
 #endif // TARGET_LPC1768

Marlin/src/HAL/LPC1768/u8g/u8g_com_HAL_LPC1768_sw_spi.cpp

 
 #include "../../../inc/MarlinConfigPre.h"
 
-#if HAS_MARLINUI_U8GLIB && DISABLED(U8GLIB_ST7920)
+#if HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 
 #include <SoftwareSPI.h>
 #include "../../shared/HAL_SPI.h"
   return 1;
 }
 
-#endif // HAS_MARLINUI_U8GLIB && !U8GLIB_ST7920
+#endif // HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 #endif // TARGET_LPC1768

Marlin/src/HAL/NATIVE_SIM/u8g/u8g_com_st7920_sw_spi.cpp

 
 #include "../../../inc/MarlinConfig.h"
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
 
 #include <U8glib-HAL.h>
 #include "../../shared/Delay.h"
   }
 #endif
 
-#endif // U8GLIB_ST7920
+#endif // IS_U8GLIB_ST7920
 #endif // TARGET_LPC1768

Marlin/src/HAL/NATIVE_SIM/u8g/u8g_com_sw_spi.cpp

 
 #include "../../../inc/MarlinConfig.h"
 
-#if HAS_MARLINUI_U8GLIB && DISABLED(U8GLIB_ST7920)
+#if HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 
 #undef SPI_SPEED
 #define SPI_SPEED 2  // About 2 MHz
 #elif !ANY(TFT_COLOR_UI, TFT_CLASSIC_UI, TFT_LVGL_UI, HAS_MARLINUI_HD44780) && HAS_MARLINUI_U8GLIB
   #include <U8glib-HAL.h>
   uint8_t u8g_com_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {return 0;}
-#endif // HAS_MARLINUI_U8GLIB && !U8GLIB_ST7920
+#endif // HAS_MARLINUI_U8GLIB && !IS_U8GLIB_ST7920
 #endif // __PLAT_NATIVE_SIM__

Marlin/src/inc/Conditionals_LCD.h

 /**
  * General Flags that may be set below by specific LCDs
  *
- *  DOGLCD                : Run a Graphical LCD through U8GLib (with MarlinUI)
- *  IS_ULTIPANEL          : Define LCD_PINS_D5/6/7 for direct-connected "Ultipanel" LCDs
- *  IS_ULTRA_LCD          : Ultra LCD, not necessarily Ultipanel.
- *  IS_RRD_SC             : Common RRD Smart Controller digital interface pins
- *  IS_RRD_FG_SC          : Common RRD Full Graphical Smart Controller digital interface pins
- *  U8GLIB_ST7920         : Most common DOGM display SPI interface, supporting a "lightweight" display mode.
- *  U8GLIB_SH1106         : SH1106 OLED with I2C interface via U8GLib
- *  IS_U8GLIB_SSD1306     : SSD1306 OLED with I2C interface via U8GLib
- *  U8GLIB_SSD1309        : SSD1309 OLED with I2C interface via U8GLib
- *  U8GLIB_ST7565_64128N  : ST7565 128x64 LCD with SPI interface via U8GLib
- *  U8GLIB_LM6059_AF      : LM6059 with Hardware SPI via U8GLib
+ *  DOGLCD                  : Run a Graphical LCD through U8GLib (with MarlinUI)
+ *  IS_ULTIPANEL            : Define LCD_PINS_D5/6/7 for direct-connected "Ultipanel" LCDs
+ *  IS_ULTRA_LCD            : Ultra LCD, not necessarily Ultipanel.
+ *  IS_RRD_SC               : Common RRD Smart Controller digital interface pins
+ *  IS_RRD_FG_SC            : Common RRD Full Graphical Smart Controller digital interface pins
+ *  IS_U8GLIB_ST7920        : Most common DOGM display SPI interface, supporting a "lightweight" display mode.
+ *  U8GLIB_SH1106           : SH1106 OLED with I2C interface via U8GLib
+ *  IS_U8GLIB_SSD1306       : SSD1306 OLED with I2C interface via U8GLib (U8GLIB_SSD1306)
+ *  U8GLIB_SSD1309          : SSD1309 OLED with I2C interface via U8GLib (HAS_U8GLIB_I2C_OLED, IS_ULTRA_LCD, DOGLCD)
+ *  IS_U8GLIB_ST7565_64128N : ST7565 128x64 LCD with SPI interface via U8GLib
+ *  IS_U8GLIB_LM6059_AF     : LM6059 with Hardware SPI via U8GLib
  */
 #if EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
 
 #elif ENABLED(ZONESTAR_12864LCD)
   #define DOGLCD
   #define IS_RRD_SC 1
-  #define U8GLIB_ST7920
+  #define IS_U8GLIB_ST7920 1
 
 #elif ENABLED(ZONESTAR_12864OLED)
   #define IS_RRD_SC 1
   #define IS_ULTIPANEL 1
   #define ENCODER_PULSES_PER_STEP 2
 
-#elif ANY(miniVIKI, VIKI2, ELB_FULL_GRAPHIC_CONTROLLER, AZSMZ_12864)
+#elif ANY(miniVIKI, VIKI2, WYH_L12864, ELB_FULL_GRAPHIC_CONTROLLER, AZSMZ_12864)
+
+  #define IS_DOGM_12864 1
 
   #define DOGLCD
   #define IS_ULTIPANEL 1
 
   #if ENABLED(miniVIKI)
-    #define U8GLIB_ST7565_64128N
+    #define IS_U8GLIB_ST7565_64128N 1
   #elif ENABLED(VIKI2)
-    #define U8GLIB_ST7565_64128N
+    #define IS_U8GLIB_ST7565_64128N 1
+  #elif ENABLED(WYH_L12864)
+    #define IS_U8GLIB_ST7565_64128N 1
+    #define ST7565_XOFFSET 0x04
   #elif ENABLED(ELB_FULL_GRAPHIC_CONTROLLER)
-    #define U8GLIB_LM6059_AF
+    #define IS_U8GLIB_LM6059_AF 1
   #elif ENABLED(AZSMZ_12864)
-    #define U8GLIB_ST7565_64128N
+    #define IS_U8GLIB_ST7565_64128N 1
   #endif
 
 #elif ENABLED(OLED_PANEL_TINYBOY2)
 #elif ENABLED(REPRAPWORLD_GRAPHICAL_LCD)
 
   #define DOGLCD
-  #define U8GLIB_ST7920
+  #define IS_U8GLIB_ST7920 1
   #define IS_ULTIPANEL 1
 
 #elif ENABLED(MKS_12864OLED)
 #elif ENABLED(SAV_3DGLCD)
 
   #ifdef U8GLIB_SSD1306
-    #define IS_U8GLIB_SSD1306
+    #define IS_U8GLIB_SSD1306 // Allow for U8GLIB_SSD1306 + SAV_3DGLCD
   #endif
   #define IS_NEWPANEL 1
 
 // ST7920-based graphical displays
 #if ANY(IS_RRD_FG_SC, LCD_FOR_MELZI, SILVER_GATE_GLCD_CONTROLLER)
   #define DOGLCD
-  #define U8GLIB_ST7920
+  #define IS_U8GLIB_ST7920 1
   #define IS_RRD_SC 1
 #endif
 
   #define IS_ULTIPANEL 1
   #define DOGLCD
   #if ENABLED(MAKRPANEL)
-    #define U8GLIB_ST7565_64128N
+    #define IS_U8GLIB_ST7565_64128N 1
   #endif
 #endif
 
  * I2C Panels
  */
 
-#if EITHER(LCD_SAINSMART_I2C_1602, LCD_SAINSMART_I2C_2004)
+#if ANY(IS_RRD_SC, IS_DOGM_12864, OLED_PANEL_TINYBOY2, LCD_I2C_PANELOLU2)
 
-  #define LCD_I2C_TYPE_PCF8575
-  #define LCD_I2C_ADDRESS 0x27   // I2C Address of the port expander
+  #define STD_ENCODER_PULSES_PER_STEP 4
+  #define STD_ENCODER_STEPS_PER_MENU_ITEM 1
 
-  #if ENABLED(LCD_SAINSMART_I2C_2004)
-    #define LCD_WIDTH 20
-    #define LCD_HEIGHT 4
+  #if ENABLED(LCD_I2C_PANELOLU2)  // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+    #define LCD_I2C_TYPE_MCP23017 // I2C Character-based 12864 display
+    #define LCD_I2C_ADDRESS 0x20  // I2C Address of the port expander
+    #define LCD_USE_I2C_BUZZER    // Enable buzzer on LCD (optional)
+    #define IS_ULTIPANEL 1
   #endif
 
-#elif ENABLED(LCD_I2C_PANELOLU2)
+#elif EITHER(LCD_SAINSMART_I2C_1602, LCD_SAINSMART_I2C_2004)
 
-  // PANELOLU2 LCD with status LEDs, separate encoder and click inputs
+  #define LCD_I2C_TYPE_PCF8575    // I2C Character-based 12864 display
+  #define LCD_I2C_ADDRESS 0x27    // I2C Address of the port expander
 
-  #define LCD_I2C_TYPE_MCP23017
-  #define LCD_I2C_ADDRESS 0x20 // I2C Address of the port expander
-  #define LCD_USE_I2C_BUZZER   // Enable buzzer on LCD (optional)
-  #define IS_ULTIPANEL 1
+  #if ENABLED(LCD_SAINSMART_I2C_2004)
+    #define LCD_WIDTH 20
+    #define LCD_HEIGHT 4
+  #endif
 
 #elif ENABLED(LCD_I2C_VIKI)
 
   #define STD_ENCODER_PULSES_PER_STEP 2
   #define STD_ENCODER_STEPS_PER_MENU_ITEM 1
 
-#elif ANY(IS_RRD_SC, miniVIKI, VIKI2, ELB_FULL_GRAPHIC_CONTROLLER, AZSMZ_12864, OLED_PANEL_TINYBOY2, BQ_LCD_SMART_CONTROLLER, LCD_I2C_PANELOLU2)
-
-  #define STD_ENCODER_PULSES_PER_STEP 4
-  #define STD_ENCODER_STEPS_PER_MENU_ITEM 1
-
 #endif
 
 #if EITHER(LCD_I2C_TYPE_MCP23017, LCD_I2C_TYPE_MCP23008) && DISABLED(NO_LCD_DETECT)

Marlin/src/inc/Conditionals_post.h

   #define _LCD_CONTRAST_MAX  115
 #elif ENABLED(VIKI2)
   #define _LCD_CONTRAST_INIT 140
+#elif ENABLED(WYH_L12864)
+  #define _LCD_CONTRAST_INIT 190
 #elif ENABLED(ELB_FULL_GRAPHIC_CONTROLLER)
   #define _LCD_CONTRAST_MIN   90
   #define _LCD_CONTRAST_INIT 110

Marlin/src/inc/SanityCheck.h

 /**
  * LCD Lightweight Screen Style
  */
-#if ENABLED(LIGHTWEIGHT_UI) && DISABLED(U8GLIB_ST7920)
+#if ENABLED(LIGHTWEIGHT_UI) && !IS_U8GLIB_ST7920
   #error "LIGHTWEIGHT_UI requires a U8GLIB_ST7920-based display."
 #endif
 
   + COUNT_ENABLED(MKS_TS35_V2_0, MKS_ROBIN_TFT24, MKS_ROBIN_TFT28, MKS_ROBIN_TFT32, MKS_ROBIN_TFT35, MKS_ROBIN_TFT43, MKS_ROBIN_TFT_V1_1R, ANET_ET4_TFT28, ANET_ET5_TFT35) \
   + COUNT_ENABLED(TFTGLCD_PANEL_SPI, TFTGLCD_PANEL_I2C) \
   + COUNT_ENABLED(VIKI2, miniVIKI) \
+  + ENABLED(WYH_L12864) \
   + COUNT_ENABLED(ZONESTAR_12864LCD, ZONESTAR_12864OLED, ZONESTAR_12864OLED_SSD1306) \
   + COUNT_ENABLED(ANET_FULL_GRAPHICS_LCD, ANET_FULL_GRAPHICS_LCD_ALT_WIRING) \
   + ENABLED(AZSMZ_12864) \

Marlin/src/lcd/dogm/marlinui_DOGM.h

     #define U8G_PARAM LCD_PINS_D4, LCD_PINS_ENABLE, LCD_PINS_RS
   #endif
 
-#elif ENABLED(U8GLIB_ST7920)
+#elif IS_U8GLIB_ST7920
 
   // RepRap Discount Full Graphics Smart Controller
   // and other variant LCDs using ST7920
     #define U8G_CLASS U8GLIB_DOGM128_2X                         // 4 stripes (HW-SPI)
   #endif
 
-#elif ENABLED(U8GLIB_LM6059_AF)
+#elif IS_U8GLIB_LM6059_AF
 
   // Based on the Adafruit ST7565 (https://www.adafruit.com/products/250)
 
     #define U8G_CLASS U8GLIB_LM6059_2X                          // 4 stripes (HW-SPI)
   #endif
 
-#elif ENABLED(U8GLIB_ST7565_64128N)
+#elif IS_U8GLIB_ST7565_64128N
 
   // MaKrPanel, Mini Viki, Viki 2.0, AZSMZ 12864 ST7565 controller
 

Marlin/src/lcd/dogm/u8g_dev_st7565_64128n_HAL.cpp

 #define WIDTH 128
 #define HEIGHT 64
 #define PAGE_HEIGHT 8
+#ifndef ST7565_XOFFSET
+  #define ST7565_XOFFSET 0x00
+#endif
 
 #define ST7565_ADC_REVERSE(N)    ((N) ? 0xA1 : 0xA0)
 #define ST7565_BIAS_MODE(N)      ((N) ? 0xA3 : 0xA2)
 static const uint8_t u8g_dev_st7565_64128n_HAL_data_start[] PROGMEM = {
   U8G_ESC_ADR(0),             // instruction mode
   U8G_ESC_CS(1),              // enable chip
-  ST7565_COLUMN_ADR(0x00),    // high 4 bits to 0, low 4 bits to 0. Changed for DisplayTech 64128N
+  ST7565_COLUMN_ADR(ST7565_XOFFSET), // high 4 bits to 0, low 4 bits to 0. Changed for DisplayTech 64128N
   U8G_ESC_END                 // end of sequence
 };
 

Marlin/src/lcd/dogm/ultralcd_st7920_u8glib_rrd_AVR.cpp

 
 #include "../../inc/MarlinConfig.h"
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
 
 #include "ultralcd_st7920_u8glib_rrd_AVR.h"
 
   void ST7920_write_byte(const uint8_t val) { ST7920_WRITE_BYTE(val); }
 #endif
 
-#endif // U8GLIB_ST7920
+#endif // IS_U8GLIB_ST7920
 #endif // !U8G_HAL_LINKS && (__AVR__ || ARDUINO_ARCH_STM32 || ARDUINO_ARCH_ESP32)

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_3.h

     #error "ANET_FULL_GRAPHICS_LCD_ALT_WIRING only applies to the ANET 1.0 board."
 
   #elif ENABLED(ANET_FULL_GRAPHICS_LCD)
+
     #error "CAUTION! ANET_FULL_GRAPHICS_LCD requires wiring modifications. See 'pins_BTT_SKR_V1_3.h' for details. Comment out this line to continue."
 
    /**
     * 1. Cut the tab off the LCD connector so it can be plugged into the "EXP1" connector the other way.
     * 2. Swap the LCD's +5V (Pin2) and GND (Pin1) wires. (This is the critical part!)
-    * 3. Rewire the CLK Signal (LCD Pin9) to LCD Pin7. (LCD Pin9 remains open because this pin is open drain.)
+    * 3. Rewire the CLK Signal (LCD Pin9) to LCD Pin7. (LCD Pin9 remains open because it is open drain.)
     * 4. A wire is needed to connect the Reset switch at J3 (LCD Pin7) to EXP2 (Pin3) on the board.
     *
     * !!! If you are unsure, ask for help! Your motherboard may be damaged in some circumstances !!!
     #define LCD_PINS_ENABLE          EXP1_05_PIN
     #define LCD_PINS_D4              EXP1_07_PIN
 
+  #elif ENABLED(WYH_L12864)
+
+    #error "CAUTION! WYH_L12864 requires wiring modifications. Comment out this line to continue."
+
+    /**
+     * 1. Cut the tab off the LCD connector so it can be plugged into the "EXP1" connector the other way.
+     * 2. Swap the LCD's +5V (Pin2) and GND (Pin1) wires. (This is the critical part!)
+     * 3. Swap the LCD's MOSI (Pin9) and empty (Pin10) wires because Pin9 is open drain.
+     *
+     * !!! If you are unsure, ask for help! Your motherboard may be damaged in some circumstances !!!
+     *
+     * The WYH_L12864 connector plug:
+     *
+     *                  BEFORE                      AFTER
+     *                  ______                     ______
+     *             GND | 1  2 | 5V             5V | 1  2 | GND
+     *              CS | 3  4 | BTN_EN2        CS | 3  4 | BTN_EN2
+     *             SID | 5  6   BTN_EN1       SID | 5  6   BTN_EN1
+     *             SCK | 7  8 | BTN_ENC       SCK | 7  8 | BTN_ENC
+     *            MOSI | 9 10 |              open | 9 10 | MOSI
+     *                  ------                     ------
+     *                   LCD                        LCD
+     */
+    #define BTN_EN1                  EXP1_06_PIN
+    #define BTN_EN2                  EXP1_04_PIN
+    #define BTN_ENC                  EXP1_08_PIN
+    #define DOGLCD_CS                EXP1_03_PIN
+    #define DOGLCD_A0                EXP1_05_PIN
+    #define DOGLCD_SCK               EXP1_07_PIN
+    #define DOGLCD_MOSI              EXP1_10_PIN
+    #define LCD_BACKLIGHT_PIN            -1
+
   #elif ENABLED(CR10_STOCKDISPLAY)
 
     #define LCD_PINS_RS              EXP1_04_PIN

Marlin/src/pins/lpc1768/pins_BTT_SKR_V1_4.h

    /**
     * 1. Cut the tab off the LCD connector so it can be plugged into the "EXP1" connector the other way.
     * 2. Swap the LCD's +5V (Pin2) and GND (Pin1) wires. (This is the critical part!)
-    * 3. Rewire the CLK Signal (LCD Pin9) to LCD Pin7. (LCD Pin9 remains open because this pin is open drain.)
+    * 3. Rewire the CLK Signal (LCD Pin9) to LCD Pin7. (LCD Pin9 remains open because it is open drain.)
     * 4. A wire is needed to connect the Reset switch at J3 (LCD Pin7) to EXP2 (Pin3) on the board.
     *
     * !!! If you are unsure, ask for help! Your motherboard may be damaged in some circumstances !!!

Marlin/src/pins/mega/pins_SILVER_GATE.h

 #define TEMP_BED_PIN                           6
 
 #if HAS_WIRED_LCD
-  #if ENABLED(U8GLIB_ST7920)                      // SPI GLCD 12864 ST7920
+  #if IS_U8GLIB_ST7920                      // SPI GLCD 12864 ST7920
     #define LCD_PINS_RS                       30
     #define LCD_PINS_ENABLE                   20
     #define LCD_PINS_D4                       25

Marlin/src/pins/pins.h

   #define IS_RAMPS_SF
 #endif
 
-#if !(BOTH(IS_ULTRA_LCD, IS_NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, MINIPANEL, REPRAPWORLD_KEYPAD))
+#if !(BOTH(IS_ULTRA_LCD, IS_NEWPANEL) && ANY(PANEL_ONE, VIKI2, miniVIKI, WYH_L12864, MINIPANEL, REPRAPWORLD_KEYPAD))
   #define HAS_FREE_AUX2_PINS 1
 #endif
 

Marlin/src/pins/pins_postprocess.h

 //
 // Default DOGLCD SPI delays
 //
-#if DISABLED(U8GLIB_ST7920)
+#if !IS_U8GLIB_ST7920
   #undef ST7920_DELAY_1
   #undef ST7920_DELAY_2
   #undef ST7920_DELAY_3

Marlin/src/pins/rambo/pins_EINSY_RAMBO.h

   #endif // IS_ULTIPANEL || TOUCH_UI_ULTIPANEL
 #endif // HAS_WIRED_LCD
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               250
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/rambo/pins_EINSY_RETRO.h

 #endif // HAS_WIRED_LCD || TOUCH_UI_ULTIPANEL || TOUCH_UI_FTDI_EVE
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               250
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/rambo/pins_MINIRAMBO.h

 
 #endif // HAS_WIRED_LCD || TOUCH_UI_ULTIPANEL
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               250
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/rambo/pins_RAMBO.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2                 0
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/ramps/pins_3DRAG.h

 
 #endif // IS_ULTRA_LCD && IS_NEWPANEL
 
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               188
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/ramps/pins_BQ_ZUM_MEGA_3D.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2                 0
   #define BOARD_ST7920_DELAY_3               189

Marlin/src/pins/ramps/pins_DAGOMA_F5.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               250
   #define BOARD_ST7920_DELAY_3               250

Marlin/src/pins/ramps/pins_FORMBOT_TREX2PLUS.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               200
   #define BOARD_ST7920_DELAY_2               200
   #define BOARD_ST7920_DELAY_3               200

Marlin/src/pins/sanguino/pins_MELZI.h

 #define IS_MELZI 1
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #ifndef BOARD_ST7920_DELAY_1
     #define BOARD_ST7920_DELAY_1               0
   #endif

Marlin/src/pins/sanguino/pins_MELZI_CREALITY.h

 #define BOARD_INFO_NAME "Melzi (Creality)"
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               125
   #define BOARD_ST7920_DELAY_2               125
   #define BOARD_ST7920_DELAY_3               125

Marlin/src/pins/sanguino/pins_MELZI_TRONXY.h

 #define BOARD_INFO_NAME "Melzi (Tronxy)"
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               125
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/sanguino/pins_MELZI_V2.h

 #define BOARD_INFO_NAME "Melzi V2"
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                 0
   #define BOARD_ST7920_DELAY_2               400
   #define BOARD_ST7920_DELAY_3                 0

Marlin/src/pins/sanguino/pins_SANGUINOLOLU_11.h

       #define KILL_PIN                        10
       #define BEEPER_PIN                      27
 
-    #elif ENABLED(U8GLIB_ST7920)                  // SPI GLCD 12864 ST7920 ( like [www.digole.com] ) For Melzi V2.0
+    #elif IS_U8GLIB_ST7920                  // SPI GLCD 12864 ST7920 ( like [www.digole.com] ) For Melzi V2.0
 
       #if IS_MELZI
         #define LCD_PINS_RS                   30  // CS chip select /SS chip slave select

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h

     #endif // !FYSETC_MINI_12864
 
     // Alter timing for graphical display
-    #if ENABLED(U8GLIB_ST7920)
+    #if IS_U8GLIB_ST7920
       #define BOARD_ST7920_DELAY_1           125
       #define BOARD_ST7920_DELAY_2           125
       #define BOARD_ST7920_DELAY_3           125

Marlin/src/pins/stm32f1/pins_CCROBOT_MEEB_3DP.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               125
   #define BOARD_ST7920_DELAY_2               125
   #define BOARD_ST7920_DELAY_3               125

Marlin/src/pins/stm32f1/pins_FLY_MINI.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             715

Marlin/src/pins/stm32f1/pins_GTM32_MINI.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             715

Marlin/src/pins/stm32f1/pins_GTM32_MINI_A30.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             715

Marlin/src/pins/stm32f1/pins_GTM32_PRO_VB.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             715

Marlin/src/pins/stm32f1/pins_GTM32_REV_B.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             715

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3_common.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #ifndef BOARD_ST7920_DELAY_1
     #define BOARD_ST7920_DELAY_1             125
   #endif

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_LITE.h

   #endif // !MKS_MINI_12864
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1             125
     #define BOARD_ST7920_DELAY_2             125
     #define BOARD_ST7920_DELAY_3             125

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h

 
     #endif
 
-    #if ENABLED(U8GLIB_ST7920)
+    #if IS_U8GLIB_ST7920
       #define BOARD_ST7920_DELAY_1           125
       #define BOARD_ST7920_DELAY_2           125
       #define BOARD_ST7920_DELAY_3           125

Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               125
   #define BOARD_ST7920_DELAY_2               125
   #define BOARD_ST7920_DELAY_3               125

Marlin/src/pins/stm32f1/pins_ZM3E4_V1_0.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               125
   #define BOARD_ST7920_DELAY_2               250
   #define BOARD_ST7920_DELAY_3               125

Marlin/src/pins/stm32f1/pins_ZM3E4_V2_0.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               200  // Tclk_fall <200ns
   #define BOARD_ST7920_DELAY_2               250  // Tdata_width >200ns
   #define BOARD_ST7920_DELAY_3               200  // Tclk_rise <200ns

Marlin/src/pins/stm32f4/pins_BTT_BTT002_V1_0.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             600

Marlin/src/pins/stm32f4/pins_BTT_E3_RRF.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             600

Marlin/src/pins/stm32f4/pins_BTT_GTR_V1_0.h

   #endif
 
   // Alter timing for graphical display
-  #if ENABLED(U8GLIB_ST7920)
+  #if IS_U8GLIB_ST7920
     #define BOARD_ST7920_DELAY_1              96
     #define BOARD_ST7920_DELAY_2              48
     #define BOARD_ST7920_DELAY_3             600

Marlin/src/pins/stm32f4/pins_BTT_OCTOPUS_V1_common.h

 #endif  // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1               120
   #define BOARD_ST7920_DELAY_2                80
   #define BOARD_ST7920_DELAY_3               580

Marlin/src/pins/stm32f4/pins_BTT_SKR_PRO_common.h

     #define BTN_EN1                  EXP2_08_PIN
     #define BTN_EN2                  EXP2_06_PIN
 
+  #elif ENABLED(WYH_L12864)
+
+    #error "CAUTION! WYH_L12864 requires wiring modifications. Comment out this line to continue."
+
+    /**
+     * 1. Cut the tab off the LCD connector so it can be plugged into the "EXP1" connector the other way.
+     * 2. Swap the LCD's +5V (Pin2) and GND (Pin1) wires.
+     *
+     * !!! If you are unsure, ask for help! Your motherboard may be damaged in some circumstances !!!
+     *
+     * The WYH_L12864 connector plug:
+     *
+     *                  BEFORE                      AFTER
+     *                  ______                     ______
+     *             GND | 1  2 | 5V             5V | 1  2 | GND
+     *              CS | 3  4 | BTN_EN2        CS | 3  4 | BTN_EN2
+     *             SID | 5  6   BTN_EN1       SID | 5  6   BTN_EN1
+     *             SCK | 7  8 | BTN_ENC       SCK | 7  8 | BTN_ENC
+     *            MOSI | 9 10 |              MOSI | 9 10 |
+     *                  ------                     ------
+     *                   LCD                        LCD
+     */
+    #undef BEEPER_PIN
+    #undef BTN_ENC
+    #define BTN_EN1                  EXP1_06_PIN
+    #define BTN_EN2                  EXP1_04_PIN
+    #define BTN_ENC                  EXP1_08_PIN
+    #define DOGLCD_CS                EXP1_03_PIN
+    #define DOGLCD_A0                EXP1_05_PIN
+    #define DOGLCD_SCK               EXP1_07_PIN
+    #define DOGLCD_MOSI              EXP1_09_PIN
+    #define LCD_BACKLIGHT_PIN            -1
+
   #else
 
     #define LCD_PINS_RS              EXP1_07_PIN
 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #ifndef BOARD_ST7920_DELAY_1
     #define BOARD_ST7920_DELAY_1             125
   #endif

Marlin/src/pins/stm32f4/pins_BTT_SKR_V2_0_common.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #ifndef BOARD_ST7920_DELAY_1
     #define BOARD_ST7920_DELAY_1             120
   #endif

Marlin/src/pins/stm32f4/pins_FLYF407ZG.h

 #define FIL_RUNOUT_PIN                      PA3
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                96
   #define BOARD_ST7920_DELAY_2                48
   #define BOARD_ST7920_DELAY_3               715

Marlin/src/pins/stm32f4/pins_FYSETC_CHEETAH_V20.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                96
   #define BOARD_ST7920_DELAY_2                48
   #define BOARD_ST7920_DELAY_3               600

Marlin/src/pins/stm32f4/pins_FYSETC_S6.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                96
   #define BOARD_ST7920_DELAY_2                48
   #define BOARD_ST7920_DELAY_3               640

Marlin/src/pins/stm32f4/pins_RUMBA32_common.h

 #endif // HAS_WIRED_LCD
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                96
   #define BOARD_ST7920_DELAY_2                48
   #define BOARD_ST7920_DELAY_3               640

Marlin/src/pins/stm32f4/pins_VAKE403D.h

 #endif
 
 // Alter timing for graphical display
-#if ENABLED(U8GLIB_ST7920)
+#if IS_U8GLIB_ST7920
   #define BOARD_ST7920_DELAY_1                96
   #define BOARD_ST7920_DELAY_2                48
   #define BOARD_ST7920_DELAY_3               715