Creality Ender 3 v2 (#17719)

.github/workflows/test-builds.yml

         - rumba32_f446ve
         - rumba32_mks
         - mks_robin_pro
+        - STM32F103RET6_creality
 
         # Put lengthy tests last
 

Marlin/Configuration.h

 //#define BLTOUCH
 
 /**
+ * Pressure sensor with a BLTouch-like interface
+ */
+//#define CREALITY_TOUCH
+
+/**
  * Touch-MI Probe by hotends.fr
  *
  * This probe is deployed and activated by moving the X-axis to a magnet at the edge of the bed.
 //#define SPI_GRAPHICAL_TFT
 
 //
+// Ender-3 v2 OEM display. A DWIN display with Rotary Encoder.
+//
+//#define DWIN_CREALITY_LCD
+
+//
 // ADS7843/XPT2046 ADC Touchscreen such as ILI9341 2.8
 //
 //#define TOUCH_BUTTONS

Marlin/src/HAL/STM32F1/timers.h

 
 #define HAL_TIMER_RATE uint32_t(F_CPU)  // frequency of timers peripherals
 
-#define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
-#define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
+#ifndef STEP_TIMER_CHAN
+  #define STEP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
+#endif
+#ifndef TEMP_TIMER_CHAN
+  #define TEMP_TIMER_CHAN 1 // Channel of the timer to use for compare and interrupts
+#endif
 
 /**
  * Note: Timers may be used by platforms and libraries

Marlin/src/MarlinCore.cpp

   #include "lcd/extui/lib/mks_ui/inc/draw_ui.h"
 #endif
 
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "lcd/dwin/dwin.h"
+  #include "lcd/dwin/dwin_lcd.h"
+  #include "lcd/dwin/rotary_encoder.h"
+#endif
+
+#if ENABLED(IIC_BL24CXX_EEPROM)
+  #include "lcd/dwin/eeprom_BL24CXX.h"
+#endif
+
 #if ENABLED(DIRECT_STEPPING)
   #include "feature/direct_stepping.h"
 #endif
   // Handle SD Card insert / remove
   TERN_(SDSUPPORT, card.manage_media());
 
+  // Handle UI input / draw events
+  TERN(DWIN_CREALITY_LCD, DWIN_Update(), ui.update());
+
   // Handle USB Flash Drive insert / remove
   TERN_(USB_FLASH_DRIVE_SUPPORT, Sd2Card::idle());
 
   // UI must be initialized before EEPROM
   // (because EEPROM code calls the UI).
 
-  SETUP_RUN(ui.init());
-  SETUP_RUN(ui.reset_status());       // Load welcome message early. (Retained if no errors exist.)
+  #if ENABLED(DWIN_CREALITY_LCD)
+    delay(800);   // Required delay (since boot?)
+    SERIAL_ECHOPGM("\nDWIN handshake ");
+    if (DWIN_Handshake()) SERIAL_ECHOLNPGM("ok."); else SERIAL_ECHOLNPGM("error.");
+    DWIN_Frame_SetDir(1); // Orientation 90°
+    DWIN_UpdateLCD();     // Show bootscreen (first image)
+  #else
+    SETUP_RUN(ui.init());
+    #if HAS_SPI_LCD && ENABLED(SHOW_BOOTSCREEN)
+      SETUP_RUN(ui.show_bootscreen());
+    #endif
+    SETUP_RUN(ui.reset_status());     // Load welcome message early. (Retained if no errors exist.)
+  #endif
 
   #if BOTH(HAS_SPI_LCD, SHOW_BOOTSCREEN)
     SETUP_RUN(ui.show_bootscreen());
     SETUP_RUN(mmu2.init());
   #endif
 
+  #if ENABLED(IIC_BL24CXX_EEPROM)
+    BL24CXX::init();
+    const uint8_t err = BL24CXX::check();
+    SERIAL_ECHO_TERNARY(err, "I2C_EEPROM Check ", "failed", "succeeded", "!\n");
+  #endif
+
+  #if ENABLED(DWIN_CREALITY_LCD)
+    Encoder_Configuration();
+    HMI_Init();
+    HMI_StartFrame(true);
+  #endif
+
+  #if HAS_SERVICE_INTERVALS && DISABLED(DWIN_CREALITY_LCD)
+    ui.reset_status(true);  // Show service messages or keep current status
+  #endif
+
   #if ENABLED(MAX7219_DEBUG)
     SETUP_RUN(max7219.init());
   #endif

Marlin/src/core/boards.h

 #define BOARD_CCROBOT_MEEB_3DP        4029  // ccrobot-online.com MEEB_3DP (STM32F103RC)
 #define BOARD_CHITU3D_V5              4030  // Chitu3D TronXY X5SA V5 Board
 #define BOARD_CHITU3D_V6              4031  // Chitu3D TronXY X5SA V5 Board
+#define BOARD_CREALITY_V4             4032  // Creality v4.x (STM32F103RE)
 
 //
 // ARM Cortex-M4F

Marlin/src/core/serial.h

   extern int8_t serial_port_index;
   #define _PORT_REDIRECT(n,p)   REMEMBER(n,serial_port_index,p)
   #define _PORT_RESTORE(n)      RESTORE(n)
-  #define SERIAL_OUT(WHAT, V...) do{ \
-    if (!serial_port_index || serial_port_index == SERIAL_BOTH) (void)MYSERIAL0.WHAT(V); \
-    if ( serial_port_index) (void)MYSERIAL1.WHAT(V); \
-  }while(0)
+
+  #ifdef SERIAL_CATCHALL
+    #define SERIAL_OUT(WHAT, V...) (void)CAT(MYSERIAL,SERIAL_CATCHALL).WHAT(V)
+  #else
+    #define SERIAL_OUT(WHAT, V...) do{ \
+      if (!serial_port_index || serial_port_index == SERIAL_BOTH) (void)MYSERIAL0.WHAT(V); \
+      if ( serial_port_index) (void)MYSERIAL1.WHAT(V); \
+    }while(0)
+  #endif
+
   #define SERIAL_ASSERT(P)      if(serial_port_index!=(P)){ debugger(); }
 #else
   #define _PORT_REDIRECT(n,p)   NOOP

Marlin/src/feature/bltouch.h

 // BLTouch commands are sent as servo angles
 typedef unsigned char BLTCommand;
 
-#define BLTOUCH_DEPLOY          10
+#if ENABLED(CREALITY_TOUCH)
+  #define STOW_ALARM         false
+  #define BLTOUCH_DEPLOY       170
+  #define BLTOUCH_STOW          20
+#else
+  #define STOW_ALARM          true
+  #define BLTOUCH_DEPLOY        10
+  #define BLTOUCH_STOW          90
+#endif
+
 #define BLTOUCH_SW_MODE         60
-#define BLTOUCH_STOW            90
 #define BLTOUCH_SELFTEST       120
 #define BLTOUCH_MODE_STORE     130
 #define BLTOUCH_5V_MODE        140
 
 private:
   FORCE_INLINE static bool _deploy_query_alarm() { return command(BLTOUCH_DEPLOY, BLTOUCH_DEPLOY_DELAY); }
-  FORCE_INLINE static bool _stow_query_alarm()   { return command(BLTOUCH_STOW, BLTOUCH_STOW_DELAY); }
+  FORCE_INLINE static bool _stow_query_alarm()   { return command(BLTOUCH_STOW, BLTOUCH_STOW_DELAY) == STOW_ALARM; }
 
   static void clear();
   static bool command(const BLTCommand cmd, const millis_t &ms);

Marlin/src/feature/powerloss.cpp

 uint32_t PrintJobRecovery::cmd_sdpos, // = 0
          PrintJobRecovery::sdpos[BUFSIZE];
 
+#if ENABLED(DWIN_CREALITY_LCD)
+  bool PrintJobRecovery::dwin_flag; // = false
+#endif
+
 #include "../sd/cardreader.h"
 #include "../lcd/ultralcd.h"
 #include "../gcode/queue.h"
     load();
     if (!valid()) return cancel();
     queue.inject_P(PSTR("M1000 S"));
+    TERN_(DWIN_CREALITY_LCD, dwin_flag = true);
   }
 }
 

Marlin/src/feature/powerloss.h

     static uint32_t cmd_sdpos,        //!< SD position of the next command
                     sdpos[BUFSIZE];   //!< SD positions of queued commands
 
+    #if ENABLED(DWIN_CREALITY_LCD)
+      static bool dwin_flag;
+    #endif
+
     static void init();
     static void prepare();
 

Marlin/src/gcode/bedlevel/abl/G29.cpp

   #include "../../../lcd/extui/ui_api.h"
 #endif
 
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "../../../lcd/dwin/dwin.h"
+#endif
+
 #if HAS_MULTI_HOTEND
   #include "../../../module/tool_change.h"
 #endif
     process_subcommands_now_P(PSTR(Z_PROBE_END_SCRIPT));
   #endif
 
+  #if ENABLED(DWIN_CREALITY_LCD)
+    DWIN_CompletedLeveling();
+  #endif
+
   report_current_position();
 
   if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("<<< G29");

Marlin/src/gcode/calibrate/G28.cpp

 #endif
 
 #include "../../lcd/ultralcd.h"
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "../../lcd/dwin/dwin.h"
+#endif
 
 #if HAS_L64XX                         // set L6470 absolute position registers to counts
   #include "../../libs/L64XX/L64XX_Marlin.h"
     log_machine_info();
   }
 
+  TERN_(DWIN_CREALITY_LCD, HMI_flag.home_flag = true);
+
   #if ENABLED(DUAL_X_CARRIAGE)
     bool IDEX_saved_duplication_state = extruder_duplication_enabled;
     DualXMode IDEX_saved_mode = dual_x_carriage_mode;
 
   ui.refresh();
 
+  TERN_(DWIN_CREALITY_LCD, DWIN_CompletedHoming());
+
   report_current_position();
 
   if (ENABLED(NANODLP_Z_SYNC) && (doZ || ENABLED(NANODLP_ALL_AXIS)))

Marlin/src/gcode/sd/M24_M25.cpp

 
 #if ENABLED(PARK_HEAD_ON_PAUSE)
   #include "../../feature/pause.h"
-  #include "../queue.h"
 #endif
 
 #if ENABLED(HOST_ACTION_COMMANDS)
     #endif
 
     print_job_timer.pause();
-    ui.reset_status();
+
+    TERN(DWIN_CREALITY_LCD,,ui.reset_status());
 
     #if ENABLED(HOST_ACTION_COMMANDS)
       TERN_(HOST_PROMPT_SUPPORT, host_prompt_open(PROMPT_PAUSE_RESUME, PSTR("Pause SD"), PSTR("Resume")));

Marlin/src/inc/Conditionals_LCD.h

   #define UNUSED_E(E) UNUSED(E)
 #endif
 
+#if ENABLED(DWIN_CREALITY_LCD)
+  #define SERIAL_CATCHALL 0
+#endif
+
+// Pressure sensor with a BLTouch-like interface
+#if ENABLED(CREALITY_TOUCH)
+  #define BLTOUCH
+#endif
+
 /**
  * The BLTouch Probe emulates a servo probe
  * and uses "special" angles for its state.

Marlin/src/inc/Conditionals_post.h

 #endif
 
 // Number of VFAT entries used. Each entry has 13 UTF-16 characters
-#define MAX_VFAT_ENTRIES TERN(SCROLL_LONG_FILENAMES, 5, 2)
+#if EITHER(SCROLL_LONG_FILENAMES, DWIN_CREALITY_LCD)
+  #define MAX_VFAT_ENTRIES (5)
+#else
+  #define MAX_VFAT_ENTRIES (2)
+#endif
 
 // Nozzle park for Delta
 #if BOTH(NOZZLE_PARK_FEATURE, DELTA)

Marlin/src/inc/SanityCheck.h

   + ENABLED(FIX_MOUNTED_PROBE) \
   + ENABLED(NOZZLE_AS_PROBE) \
   + (HAS_Z_SERVO_PROBE && DISABLED(BLTOUCH)) \
-  + ENABLED(BLTOUCH) \
+  + ENABLED(BLTOUCH) && DISABLED(CREALITY_TOUCH) \
+  + ENABLED(CREALITY_TOUCH) \
   + ENABLED(TOUCH_MI_PROBE) \
   + ENABLED(SOLENOID_PROBE) \
   + ENABLED(Z_PROBE_ALLEN_KEY) \
   + ENABLED(FYSETC_MINI_12864_2_1) \
   + ENABLED(FYSETC_GENERIC_12864_1_1) \
   + ENABLED(CR10_STOCKDISPLAY) \
+  + ENABLED(DWIN_CREALITY_LCD) \
   + ENABLED(ANET_FULL_GRAPHICS_LCD) \
   + ENABLED(AZSMZ_12864) \
   + ENABLED(SILVER_GATE_GLCD_CONTROLLER) \

Marlin/src/lcd/dwin/README.md

+# DWIN for Creality Ender 3 v2
+
+Marlin's Ender 3 v2 support requires the `DWIN_SET` included with the Ender 3 V2 [example configuration](https://github.com/MarlinFirmware/Configurations/tree/bugfix-2.0.x/config/examples/Creality/Ender-3%20V2).
+
+## Easy Install
+
+Copy the `DWIN_SET` folder onto a Micro-SD card and insert the card into the slot on the DWIN screen. Cycle the machine and wait for the screen to go from blue to orange. Turn the machine off and remove the SD card. When you turn on the machine the screen will display a "Creality" loading screen.

Marlin/src/lcd/dwin/dwin.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 <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * DWIN by Creality3D
+ */
+
+#include "dwin_lcd.h"
+#include "rotary_encoder.h"
+#include "eeprom_BL24CXX.h"
+
+#include <stdint.h>
+
+#define MACHINE_SIZE    "220x220x250"
+#define CORP_WEBSITE_C  "www.cxsw3d.com"
+#define CORP_WEBSITE_E  "www.creality.com"
+
+/*********************************/
+
+#define MENU_CHAR_LIMIT  24
+
+/*fan speed limit*/
+#define FanOn           255
+#define FanOff          0
+
+/*print speed limit*/
+#define max_print_speed   999
+#define min_print_speed   10
+
+/*Temp limit*/
+#define max_E_Temp    (HEATER_0_MAXTEMP - 15)
+#define min_E_Temp    HEATER_0_MINTEMP
+#define max_Bed_Temp  (BED_MAXTEMP  - 10)
+#define min_Bed_Temp  BED_MINTEMP
+
+/*Feedspeed limit*/  // max feedspeed = DEFAULT_MAX_FEEDRATE * 2
+#define min_MaxFeedspeed      1
+#define min_MaxAcceleration   1
+#define min_MaxCorner         0.1
+#define min_Step              1
+
+#define FEEDRATE_E      (60)
+
+// mininum unit (0.1) : multiple (10)
+#define MinUnitMult   10
+
+#define Encoder_wait    20
+#define DWIN_SCROLL_UPDATE_INTERVAL 2000
+#define DWIN_REMAIN_TIME_UPDATE_INTERVAL 20000
+
+enum processID {
+  /*Process ID*/
+  MainMenu,
+  SelectFile,
+  Prepare,
+  Control,
+  Leveling,
+  PrintProcess,
+  AxisMove,
+  TemperatureID,
+  Motion,
+  Info,
+  Tune,
+  PLAPreheat,
+  ABSPreheat,
+  MaxSpeed,
+  MaxSpeed_value,
+  MaxAcceleration,
+  MaxAcceleration_value,
+  MaxCorner,
+  MaxCorner_value,
+  Step,
+  Step_value,
+
+  /*Last Process ID*/
+  Last_Prepare,
+
+  /*Back Process ID*/
+  Back_Main,
+  Back_Print,
+
+  /*Date variable ID*/
+  Move_X,
+  Move_Y,
+  Move_Z,
+  Extruder,
+  Homeoffset,
+  ETemp,
+  BedTemp,
+  FanSpeed,
+  PrintSpeed,
+
+  /*Window ID*/
+  Print_window,
+  Popup_Window
+};
+
+/*Picture ID*/
+#define Start_Process       0
+#define Language_English    1
+#define Language_Chinese    2
+
+/*ICON ID*/
+#define ICON                      0x09
+#define ICON_LOGO                  0
+#define ICON_Print_0               1
+#define ICON_Print_1               2
+#define ICON_Prepare_0             3
+#define ICON_Prepare_1             4
+#define ICON_Control_0             5
+#define ICON_Control_1             6
+#define ICON_Leveling_0            7
+#define ICON_Leveling_1            8
+#define ICON_HotendTemp            9
+#define ICON_BedTemp              10
+#define ICON_Speed                11
+#define ICON_Zoffset              12
+#define ICON_Back                 13
+#define ICON_File                 14
+#define ICON_PrintTime            15
+#define ICON_RemainTime           16
+#define ICON_Setup_0              17
+#define ICON_Setup_1              18
+#define ICON_Pause_0              19
+#define ICON_Pause_1              20
+#define ICON_Continue_0           21
+#define ICON_Continue_1           22
+#define ICON_Stop_0               23
+#define ICON_Stop_1               24
+#define ICON_Bar                  25
+#define ICON_More                 26
+
+#define ICON_Axis                 27
+#define ICON_CloseMotor           28
+#define ICON_Homing               29
+#define ICON_SetHome              30
+#define ICON_PLAPreheat           31
+#define ICON_ABSPreheat           32
+#define ICON_Cool                 33
+#define ICON_Language             34
+
+#define ICON_MoveX                35
+#define ICON_MoveY                36
+#define ICON_MoveZ                37
+#define ICON_Extruder             38
+
+#define ICON_Temperature          40
+#define ICON_Motion               41
+#define ICON_WriteEEPROM          42
+#define ICON_ReadEEPROM           43
+#define ICON_ResumeEEPROM         44
+#define ICON_Info                 45
+
+#define ICON_SetEndTemp           46
+#define ICON_SetBedTemp           47
+#define ICON_FanSpeed             48
+#define ICON_SetPLAPreheat        49
+#define ICON_SetABSPreheat        50
+
+#define ICON_MaxSpeed             51
+#define ICON_MaxAccelerated       52
+#define ICON_MaxCorner            53
+#define ICON_Step                 54
+#define ICON_PrintSize            55
+#define ICON_Version              56
+#define ICON_Contact              57
+#define ICON_StockConfiguraton    58
+#define ICON_MaxSpeedX            59
+#define ICON_MaxSpeedY            60
+#define ICON_MaxSpeedZ            61
+#define ICON_MaxSpeedE            62
+#define ICON_MaxAccX              63
+#define ICON_MaxAccY              64
+#define ICON_MaxAccZ              65
+#define ICON_MaxAccE              66
+#define ICON_MaxSpeedCornerX      67
+#define ICON_MaxSpeedCornerY      68
+#define ICON_MaxSpeedCornerZ      69
+#define ICON_MaxSpeedCornerE      70
+#define ICON_StepX                71
+#define ICON_StepY                72
+#define ICON_StepZ                73
+#define ICON_StepE                74
+#define ICON_Setspeed             75
+#define ICON_SetZOffset           76
+#define ICON_Rectangle            77
+#define ICON_BLTouch              78
+#define ICON_TempTooLow           79
+#define ICON_AutoLeveling         80
+#define ICON_TempTooHigh          81
+#define ICON_NoTips_C             82
+#define ICON_NoTips_E             83
+#define ICON_Continue_C           84
+#define ICON_Continue_E           85
+#define ICON_Cancel_C             86
+#define ICON_Cancel_E             87
+#define ICON_Confirm_C            88
+#define ICON_Confirm_E            89
+#define ICON_Info_0               90
+#define ICON_Info_1               91
+
+/*
+* 3-.0：字号大小，0x00-0x09，对应字体大小于下：
+* 0x00=6*12   0x01=8*16   0x02=10*20  0x03=12*24  0x04=14*28
+* 0x05=16*32  0x06=20*40  0x07=24*48  0x08=28*56  0x09=32*64
+*/
+#define font6x12  0x00
+#define font8x16  0x01
+#define font10x20 0x02
+#define font12x24 0x03
+#define font14x28 0x04
+#define font16x32 0x05
+#define font20x40 0x06
+#define font24x48 0x07
+#define font28x56 0x08
+#define font32x64 0x09
+
+/* Colour */
+#define White             0xFFFF
+#define Background_window 0x31E8  // 弹窗背景色
+#define Background_blue   0x1125  // 暗蓝背景色
+#define Background_black  0x0841  // 黑色背景色
+#define Font_window       0xD6BA  // 弹窗字体背景色
+#define Line_Color        0x3A6A  // 分割线颜色
+#define Rectangle_Color   0xEE2F  // 蓝色方块光标颜色
+#define Percent_Color     0xFE29  // 百分比颜色
+#define BarFill_Color     0x10E4  // 进度条填充色
+#define Select_Color      0x33BB  // 选中色
+
+extern int checkkey, last_checkkey;
+extern float zprobe_zoffset;
+extern char print_filename[16];
+
+extern millis_t heat_time;
+
+typedef struct {
+  int16_t E_Temp          = 0;
+  int16_t Bed_Temp        = 0;
+  int16_t Fan_speed       = 0;
+  int16_t print_speed     = 100;
+  float Max_Feedspeed       = 0;
+  float Max_Acceleration    = 0;
+  float Max_Corner          = 0;
+  float Max_Step           = 0;
+  float Move_X_scale        = 0;
+  float Move_Y_scale        = 0;
+  float Move_Z_scale        = 0;
+  float Move_E_scale        = 0;
+  float offset_value        = 0;
+  char show_mode            = 0;    // -1: Temperature control    0: Printing temperature
+  int16_t preheat_hotend_temp[2];
+  int16_t preheat_bed_temp[2];
+  uint8_t preheat_fan_speed[2];
+} HMI_value_t;
+
+typedef struct {
+  bool language_flag;  // 0: EN, 1: CN
+  bool pause_flag:1;
+  bool print_finish:1;
+  bool confirm_flag:1;
+  bool select_flag:1;
+  bool home_flag:1;
+  bool heat_flag:1;  // 0: heating done  1: during heating
+  bool ETempTooLow_flag:1;
+  bool leveling_offset_flag:1;
+  char feedspeed_flag;
+  char acc_flag;
+  char corner_flag;
+  char step_flag;
+} HMI_Flag;
+
+extern HMI_value_t HMI_ValueStruct;
+extern HMI_Flag    HMI_flag;
+
+/* Language */
+void lcd_select_language(void);
+void set_english_to_eeprom(void);
+void set_chinese_to_eeprom(void);
+
+/* Show ICON*/
+void ICON_Print(bool show);
+void ICON_Prepare(bool show);
+void ICON_Control(bool show);
+void ICON_Leveling(bool show);
+void ICON_StartInfo(bool show);
+
+void ICON_Setting(bool show);
+void ICON_Pause(bool show);
+void ICON_Continue(bool show);
+void ICON_Stop(bool show);
+
+/* Popup window tips */
+void Popup_Window_Temperature(const bool toohigh);
+void Popup_Window_ETempTooLow(void);
+void Popup_Window_Resume(void);
+void Popup_Window_Home(void);
+void Popup_Window_Leveling(void);
+
+void Goto_PrintProcess(void);
+void Goto_MainMenu(void);
+
+/* Variable control */
+void HMI_Move_X(void);
+void HMI_Move_Y(void);
+void HMI_Move_Z(void);
+void HMI_Move_E(void);
+
+void HMI_Zoffset(void);
+void HMI_ETemp(void);
+void HMI_BedTemp(void);
+void HMI_FanSpeed(void);
+void HMI_PrintSpeed(void);
+
+void HMI_MaxFeedspeedXYZE(void);
+void HMI_MaxAccelerationXYZE(void);
+void HMI_MaxCornerXYZE(void);
+void HMI_StepXYZE(void);
+
+void update_variable(void);
+void show_plus_or_minus(uint8_t size, uint16_t bColor, uint8_t iNum, uint8_t fNum, uint16_t x, uint16_t y, long value);
+
+/* SD Card */
+void HMI_SDCardInit(void);
+void HMI_SDCardUpdate(void);
+
+/* Main Process */
+void Icon_print(bool value);
+void Icon_control(bool value);
+void Icon_temperature(bool value);
+void Icon_leveling(bool value);
+
+/* Other */
+bool Pause_HeatStatus();
+void HMI_StartFrame(const bool with_update); // 开机画面
+void HMI_MainMenu(void);          // 主进程画面
+void HMI_SelectFile(void);        // 文件页
+void HMI_Printing(void);          // 打印页
+void HMI_Prepare(void);           // 准备页
+void HMI_Control(void);           // 控制页
+void HMI_Leveling(void);          // 调平页
+void HMI_AxisMove(void);          // 轴移动菜单
+void HMI_Temperature(void);       // 温度菜单
+void HMI_Motion(void);            // 运动菜单
+void HMI_Info(void);              // 信息菜单
+void HMI_Tune(void);              // 调整菜单
+void HMI_PLAPreheatSetting(void); // PLA预热设置
+void HMI_ABSPreheatSetting(void); // ABS预热设置
+void HMI_MaxSpeed(void);          // 最大速度子菜单
+void HMI_MaxAcceleration(void);   // 最大加速度子菜单
+void HMI_MaxCorner(void);         // 最大拐角速度子菜单
+void HMI_Step(void);              // 传动比
+
+void HMI_Init(void);
+void DWIN_Update(void);
+void EachMomentUpdate(void);
+void DWIN_HandleScreen(void);
+
+void DWIN_CompletedHoming(void);
+void DWIN_CompletedLeveling(void);

Marlin/src/lcd/dwin/dwin_lcd.cpp

+/**
+ * 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/>.
+ *
+ */
+
+/********************************************************************************
+ * @file     dwin_lcd.c
+ * @author   LEO / Creality3D
+ * @date     2019/07/18
+ * @version  2.0.1
+ * @brief    迪文屏控制操作函数
+ ********************************************************************************/
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DWIN_CREALITY_LCD)
+
+#include "../../inc/MarlinConfig.h"
+
+#include "dwin_lcd.h"
+#include <string.h> // for memset
+
+// Make sure DWIN_SendBuf is large enough to hold the largest
+// printed string plus the draw command and tail.
+uint8_t DWIN_SendBuf[11 + 24] = { 0xAA };
+uint8_t DWIN_BufTail[4] = { 0xCC, 0x33, 0xC3, 0x3C };
+uint8_t databuf[26] = { 0 };
+uint8_t receivedType;
+
+int recnum = 0;
+
+inline void DWIN_Byte(size_t &i, const uint16_t bval) {
+  DWIN_SendBuf[++i] = bval;
+}
+
+inline void DWIN_Word(size_t &i, const uint16_t wval) {
+  DWIN_SendBuf[++i] = wval >> 8;
+  DWIN_SendBuf[++i] = wval & 0xFF;
+}
+
+inline void DWIN_Long(size_t &i, const uint32_t lval) {
+  DWIN_SendBuf[++i] = (lval >> 24) & 0xFF;
+  DWIN_SendBuf[++i] = (lval >> 16) & 0xFF;
+  DWIN_SendBuf[++i] = (lval >>  8) & 0xFF;
+  DWIN_SendBuf[++i] = lval & 0xFF;
+}
+
+inline void DWIN_String(size_t &i, char * const string) {
+  const size_t len = strlen(string);
+  memcpy(&DWIN_SendBuf[i+1], string, len);
+  i += len;
+}
+
+/*发送当前BUF中的数据以及包尾数据 len:整包数据长度*/
+inline void DWIN_Send(size_t &i) {
+  ++i;
+  LOOP_L_N(n, i) {  MYSERIAL1.write(DWIN_SendBuf[n]);
+                    delayMicroseconds(1); }
+  LOOP_L_N(n, 4) {  MYSERIAL1.write(DWIN_BufTail[n]);
+                    delayMicroseconds(1); }
+}
+
+/*----------------------------------------------系统变量函数----------------------------------------------*/
+/*握手 1: 握手成功  2: 握手失败*/
+bool DWIN_Handshake(void) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x00);
+  DWIN_Send(i);
+
+  while (MYSERIAL1.available() > 0 && recnum < (signed)sizeof(databuf)) {
+    databuf[recnum] = MYSERIAL1.read();
+    // ignore the invalid data
+    if (databuf[0] != FHONE) { // prevent the program from running.
+      if (recnum > 0) {
+        recnum = 0;
+        ZERO(databuf);
+      }
+      continue;
+    }
+    delay(10);
+    recnum++;
+  }
+
+  return ( recnum >= 3
+        && databuf[0] == FHONE
+        && databuf[1] == '\0'
+        && databuf[2] == 'O'
+        && databuf[3] == 'K' );
+}
+
+/*设定背光亮度 luminance:亮度(0x00~0xFF)*/
+void DWIN_Backlight_SetLuminance(const uint8_t luminance) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x30);
+  DWIN_Byte(i, _MAX(luminance, 0x1F));
+  DWIN_Send(i);
+}
+
+/*设定画面显示方向 dir:0,0°; 1,90°; 2,180°; 3,270°*/
+void DWIN_Frame_SetDir(uint8_t dir) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x34);
+  DWIN_Byte(i, 0x5A);
+  DWIN_Byte(i, 0xA5);
+  DWIN_Byte(i, dir);
+  DWIN_Send(i);
+}
+
+/*更新显示*/
+void DWIN_UpdateLCD(void) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x3D);
+  DWIN_Send(i);
+}
+
+/*----------------------------------------------绘图相关函数----------------------------------------------*/
+/*画面清屏 color:清屏颜色*/
+void DWIN_Frame_Clear(const uint16_t color) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x01);
+  DWIN_Word(i, color);
+  DWIN_Send(i);
+}
+
+/*画面画线 color:线段颜色 xStart:X起始坐标 yStart:Y起始坐标 xEnd:X终止坐标 yEnd:Y终止坐标*/
+void DWIN_Draw_Line(uint16_t color, uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x03);
+  DWIN_Word(i, color);
+  DWIN_Word(i, xStart);
+  DWIN_Word(i, yStart);
+  DWIN_Word(i, xEnd);
+  DWIN_Word(i, yEnd);
+  DWIN_Send(i);
+}
+
+/*画面画矩形 mode:0,外框;1,填充;2,异或填充 color:颜色 xStart/yStart:矩形左上坐标 xEnd/yEnd:矩形右下坐标*/
+void DWIN_Draw_Rectangle(uint8_t mode, uint16_t color,
+                         uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x05);
+  DWIN_Byte(i, mode);
+  DWIN_Word(i, color);
+  DWIN_Word(i, xStart);
+  DWIN_Word(i, yStart);
+  DWIN_Word(i, xEnd);
+  DWIN_Word(i, yEnd);
+  DWIN_Send(i);
+}
+
+/*画面区域移动 mode:0,环移;1,平移 dir:0,向左移动;1,向右移动;2,向上移动;3,向下移动 dis:移动距离
+                color:填充颜色 xStart/yStart:选定区域左上坐标 xEnd/yEnd:选定区域右下坐标*/
+void DWIN_Frame_AreaMove(uint8_t mode, uint8_t dir, uint16_t dis,
+                         uint16_t color, uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x09);
+  DWIN_Byte(i, (mode << 7) | dir);
+  DWIN_Word(i, dis);
+  DWIN_Word(i, color);
+  DWIN_Word(i, xStart);
+  DWIN_Word(i, yStart);
+  DWIN_Word(i, xEnd);
+  DWIN_Word(i, yEnd);
+  DWIN_Send(i);
+}
+
+/*----------------------------------------------文本相关函数----------------------------------------------*/
+/*画面显示字符串 widthAdjust:true,自调整字符宽度;false,不调整字符宽度 bShow:true,显示背景色;false,不显示背景色 size:字号大小
+                  color:字符颜色 bColor:背景颜色 x/y:字符串左上坐标 *string:字符串*/
+void DWIN_Draw_String(bool widthAdjust, bool bShow, uint8_t size,
+                      uint16_t color, uint16_t bColor, uint16_t x, uint16_t y, char *string) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x11);
+  DWIN_Byte(i, (widthAdjust? 0x80:0x00) | (bShow? 0x40:0x00) | size);
+  DWIN_Word(i, color);
+  DWIN_Word(i, bColor);
+  DWIN_Word(i, x);
+  DWIN_Word(i, y);
+  DWIN_String(i, string);
+  DWIN_Send(i);
+}
+
+/*画面显示正整数 bShow:true,显示背景色;false,不显示背景色 zeroFill:true,补零;false,不补零 zeroMode:1,无效0显示为0; 0,无效0显示为空格 size:字号大小
+                  color:字符颜色 bColor:背景颜色 iNum:位数 x/y:变量左上坐标 value:整型变量*/
+void DWIN_Draw_IntValue(uint8_t bShow, bool zeroFill, uint8_t zeroMode, uint8_t size, uint16_t color,
+                          uint16_t bColor, uint8_t iNum, uint16_t x, uint16_t y, uint16_t value) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x14);
+  DWIN_Byte(i, (bShow? 0x80:0x00) | (zeroFill? 0x20:0x00) | (zeroMode? 0x10:0x00) | size);
+  DWIN_Word(i, color);
+  DWIN_Word(i, bColor);
+  DWIN_Byte(i, iNum);
+  DWIN_Byte(i, 0); // fNum
+  DWIN_Word(i, x);
+  DWIN_Word(i, y);
+  #if 0
+    for (char count = 0; count < 8; count++) {
+      DWIN_Byte(i, value);
+      value >>= 8;
+      if ((value&0xFF) == 0x00) break;
+    }
+  #else
+    // Write a big-endian 64 bit integer
+    const size_t p = i + 1;
+    for (char count = 8; count--;) { // 7..0
+      ++i;
+      DWIN_SendBuf[p + count] = value;
+      value >>= 8;
+    }
+  #endif
+
+  DWIN_Send(i);
+}
+
+/*画面显示浮点数 bShow:true,显示背景色;false,不显示背景色 zeroFill:true,补零;false,不补零 zeroMode:1,无效0显示为0; 0,无效0显示为空格 size:字号大小
+                  color:字符颜色 bColor:背景颜色 iNum:整数位数 fNum:小数位数 x/y:变量左上坐标 value:浮点数变量*/
+void DWIN_Draw_FloatValue(uint8_t bShow, bool zeroFill, uint8_t zeroMode, uint8_t size, uint16_t color,
+                            uint16_t bColor, uint8_t iNum, uint8_t fNum, uint16_t x, uint16_t y, long value) {
+  //uint8_t *fvalue = (uint8_t*)&value;
+  size_t i = 0;
+  DWIN_Byte(i, 0x14);
+  DWIN_Byte(i, (bShow? 0x80:0x00) | (zeroFill? 0x20:0x00) | (zeroMode? 0x10:0x00) | size);
+  DWIN_Word(i, color);
+  DWIN_Word(i, bColor);
+  DWIN_Byte(i, iNum);
+  DWIN_Byte(i, fNum);
+  DWIN_Word(i, x);
+  DWIN_Word(i, y);
+  DWIN_Long(i, value);
+  /*
+  DWIN_Byte(i, fvalue[3]);
+  DWIN_Byte(i, fvalue[2]);
+  DWIN_Byte(i, fvalue[1]);
+  DWIN_Byte(i, fvalue[0]);
+  */
+  DWIN_Send(i);
+}
+
+/*----------------------------------------------图片相关函数----------------------------------------------*/
+/*jpg图片显示并缓存在#0虚拟显示区 id:图片ID*/
+void DWIN_JPG_ShowAndCache(const uint8_t id) {
+  size_t i = 0;
+  DWIN_Word(i, 0x2200);
+  DWIN_Byte(i, id);
+  DWIN_Send(i);     //AA 23 00 00 00 00 08 00 01 02 03 CC 33 C3 3C
+}
+
+/*图标显示 libID:图标库ID picID:图标ID x/y:图标左上坐标*/
+void DWIN_ICON_Show(uint8_t libID, uint8_t picID, uint16_t x, uint16_t y) {
+  NOMORE(x, DWIN_WIDTH - 1);
+  NOMORE(y, DWIN_HEIGHT - 1); // -- ozy -- srl
+  size_t i = 0;
+  DWIN_Byte(i, 0x23);
+  DWIN_Word(i, x);
+  DWIN_Word(i, y);
+  DWIN_Byte(i, 0x80 | libID);
+  DWIN_Byte(i, picID);
+  DWIN_Send(i);
+}
+
+/*jpg图片解压到#1虚拟显示区 id:图片ID*/
+void DWIN_JPG_CacheToN(uint8_t n, uint8_t id) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x25);
+  DWIN_Byte(i, n);
+  DWIN_Byte(i, id);
+  DWIN_Send(i);
+}
+
+/*从虚拟显示区复制区域至当前画面 cacheID:虚拟区号 xStart/yStart:虚拟区左上坐标 xEnd/yEnd:虚拟区右下坐标 x/y:当前画面粘贴坐标*/
+void DWIN_Frame_AreaCopy(uint8_t cacheID, uint16_t xStart, uint16_t yStart,
+                         uint16_t xEnd, uint16_t yEnd, uint16_t x, uint16_t y) {
+  size_t i = 0;
+  DWIN_Byte(i, 0x27);
+  DWIN_Byte(i, 0x80 | cacheID);
+  DWIN_Word(i, xStart);
+  DWIN_Word(i, yStart);
+  DWIN_Word(i, xEnd);
+  DWIN_Word(i, yEnd);
+  DWIN_Word(i, x);
+  DWIN_Word(i, y);
+  DWIN_Send(i);
+}
+
+#endif // DWIN_CREALITY_LCD

Marlin/src/lcd/dwin/dwin_lcd.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 <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/********************************************************************************
+ * @file     dwin_lcd.h
+ * @author   LEO / Creality3D
+ * @date     2019/07/18
+ * @version  2.0.1
+ * @brief    迪文屏控制操作函数
+ ********************************************************************************/
+
+#include <stdint.h>
+
+#define RECEIVED_NO_DATA         0x00
+#define RECEIVED_SHAKE_HAND_ACK  0x01
+
+#define FHONE                    0xAA
+
+#define DWIN_SCROLL_UP   2
+#define DWIN_SCROLL_DOWN 3
+
+#define DWIN_WIDTH  272
+#define DWIN_HEIGHT 480
+
+/*接收数据解析 返回值:true,接收到数据;false,未接收到数据*/
+bool DWIN_ReceiveAnalyze(void);
+
+/*发送当前BUF中的数据以及包尾数据 len:整包数据长度*/
+void DWIN_Send_BufTail(const uint8_t len);
+
+/*----------------------------------------------系统变量函数----------------------------------------------*/
+/*握手 1: 握手成功  2: 握手失败*/
+bool DWIN_Handshake(void);
+
+/*设定背光亮度 luminance:亮度(0x00~0xFF)*/
+void DWIN_Backlight_SetLuminance(const uint8_t luminance);
+
+/*设定画面显示方向 dir:0,0°; 1,90°; 2,180°; 3,270°*/
+void DWIN_Frame_SetDir(uint8_t dir);
+
+/*更新显示*/
+void DWIN_UpdateLCD(void);
+
+/*----------------------------------------------绘图相关函数----------------------------------------------*/
+/*画面清屏 color:清屏颜色*/
+void DWIN_Frame_Clear(const uint16_t color);
+
+/*画面画线 color:线段颜色 xStart:X起始坐标 yStart:Y起始坐标 xEnd:X终止坐标 yEnd:Y终止坐标*/
+void DWIN_Draw_Line(uint16_t color, uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd);
+
+/*画面画矩形 mode:0,外框;1,填充;2,异或填充 color:颜色 xStart/yStart:矩形左上坐标 xEnd/yEnd:矩形右下坐标*/
+void DWIN_Draw_Rectangle(uint8_t mode, uint16_t color,
+                         uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd);
+
+/*画面区域移动 mode:0,环移;1,平移 dir:0,向左移动;1,向右移动;2,向上移动;3,向下移动 dis:移动距离
+                color:填充颜色 xStart/yStart:选定区域左上坐标 xEnd/yEnd:选定区域右下坐标*/
+void DWIN_Frame_AreaMove(uint8_t mode, uint8_t dir, uint16_t dis,
+                         uint16_t color, uint16_t xStart, uint16_t yStart, uint16_t xEnd, uint16_t yEnd);
+
+/*----------------------------------------------文本相关函数----------------------------------------------*/
+/*画面显示字符串 widthAdjust:true,自调整字符宽度;false,不调整字符宽度 bShow:true,显示背景色;false,不显示背景色 size:字号大小
+                  color:字符颜色 bColor:背景颜色 x/y:字符串左上坐标 *string:字符串*/
+void DWIN_Draw_String(bool widthAdjust, bool bShow, uint8_t size,
+                      uint16_t color, uint16_t bColor, uint16_t x, uint16_t y, char *string);
+
+/*画面显示正整数 bShow:true,显示背景色;false,不显示背景色 zeroFill:true,补零;false,不补零 zeroMode:1,无效0显示为0; 0,无效0显示为空格 size:字号大小
+                  color:字符颜色 bColor:背景颜色 iNum:位数 x/y:变量左上坐标 value:整型变量*/
+void DWIN_Draw_IntValue(uint8_t bShow, bool zeroFill, uint8_t zeroMode, uint8_t size, uint16_t color,
+                          uint16_t bColor, uint8_t iNum, uint16_t x, uint16_t y, uint16_t value);
+
+/*画面显示浮点数 bShow:true,显示背景色;false,不显示背景色 zeroFill:true,补零;false,不补零 zeroMode:1,无效0显示为0; 0,无效0显示为空格 size:字号大小
+                  color:字符颜色 bColor:背景颜色 iNum:整数位数 fNum:小数位数 x/y:变量左上坐标 value:浮点数变量*/
+void DWIN_Draw_FloatValue(uint8_t bShow, bool zeroFill, uint8_t zeroMode, uint8_t size, uint16_t color,
+                            uint16_t bColor, uint8_t iNum, uint8_t fNum, uint16_t x, uint16_t y, long value);
+
+/*----------------------------------------------图片相关函数----------------------------------------------*/
+/*jpg图片显示并缓存在#0虚拟显示区 id:图片ID*/
+void DWIN_JPG_ShowAndCache(const uint8_t id);
+
+/*图标显示 libID:图标库ID picID:图标ID x/y:图标左上坐标*/
+void DWIN_ICON_Show(uint8_t libID, uint8_t picID, uint16_t x, uint16_t y);
+
+/*jpg图片解压到#1虚拟显示区 id:图片ID*/
+void DWIN_JPG_CacheToN(uint8_t n, uint8_t id);
+
+/*jpg图片解压到#1虚拟显示区 id:图片ID*/
+inline void DWIN_JPG_CacheTo1(uint8_t id) { DWIN_JPG_CacheToN(1, id); }
+
+/*从虚拟显示区复制区域至当前画面 cacheID:虚拟区号 xStart/yStart:虚拟区左上坐标 xEnd/yEnd:虚拟区右下坐标 x/y:当前画面粘贴坐标*/
+void DWIN_Frame_AreaCopy(uint8_t cacheID, uint16_t xStart, uint16_t yStart,
+                         uint16_t xEnd, uint16_t yEnd, uint16_t x, uint16_t y);

Marlin/src/lcd/dwin/eeprom_BL24CXX.cpp

+/**
+ * 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/>.
+ *
+ */
+
+/********************************************************************************
+ * @file     eeprom_BL24CXX.cpp
+ * @brief    i2c EEPROM for Ender 3 v2 board (4.2.2)
+ ********************************************************************************/
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(IIC_BL24CXX_EEPROM)
+
+#include "eeprom_BL24CXX.h"
+#include "../../MarlinCore.h"
+
+#include <stdlib.h>
+
+/******************** IIC ********************/
+
+// 初始化IIC
+void IIC::init() {
+  SET_OUTPUT(IIC_EEPROM_SDA);
+  SET_OUTPUT(IIC_EEPROM_SCL);
+
+  IIC_SCL_1();
+  IIC_SDA_1();
+}
+
+// 产生IIC起始信号
+void IIC::start() {
+  SDA_OUT();      // sda线输出
+  IIC_SDA_1();
+  IIC_SCL_1();
+  delay_us(4);
+  IIC_SDA_0(); // START:when CLK is high, DATA change form high to low
+  delay_us(4);
+  IIC_SCL_0(); // 钳住I2C总线，准备发送或接收数据
+}
+
+// 产生IIC停止信号
+void IIC::stop() {
+  SDA_OUT(); // sda线输出
+  IIC_SCL_0();
+  IIC_SDA_0(); // STOP:when CLK is high DATA change form low to high
+  delay_us(4);
+  IIC_SCL_1();
+  IIC_SDA_1(); // 发送I2C总线结束信号
+  delay_us(4);
+}
+
+// 等待应答信号到来
+// 返回值：1，接收应答失败
+//         0，接收应答成功
+uint8_t IIC::wait_ack() {
+  uint8_t ucErrTime=0;
+  SDA_IN();      // SDA设置为输入
+  IIC_SDA_1();delay_us(1);
+  IIC_SCL_1();delay_us(1);
+  while (READ_SDA()) {
+    ucErrTime++;
+    if (ucErrTime>250) {
+      stop();
+      return 1;
+    }
+  }
+  IIC_SCL_0(); // 时钟输出0
+  return 0;
+}
+
+// 产生ACK应答
+void IIC::ack() {
+  IIC_SCL_0();
+  SDA_OUT();
+  IIC_SDA_0();
+  delay_us(2);
+  IIC_SCL_1();
+  delay_us(2);
+  IIC_SCL_0();
+}
+
+// 不产生ACK应答
+void IIC::nAck() {
+  IIC_SCL_0();
+  SDA_OUT();
+  IIC_SDA_1();
+  delay_us(2);
+  IIC_SCL_1();
+  delay_us(2);
+  IIC_SCL_0();
+}
+
+// IIC发送一个字节
+// 返回从机有无应答
+// 1，有应答
+// 0，无应答
+void IIC::send_byte(uint8_t txd) {
+  SDA_OUT();
+  IIC_SCL_0(); // 拉低时钟开始数据传输
+  LOOP_L_N(t, 8) {
+    // IIC_SDA = (txd & 0x80) >> 7;
+    if (txd & 0x80) IIC_SDA_1(); else IIC_SDA_0();
+    txd <<= 1;
+    delay_us(2);   // 对TEA5767这三个延时都是必须的
+    IIC_SCL_1();
+    delay_us(2);
+    IIC_SCL_0();
+    delay_us(2);
+  }
+}
+
+// 读1个字节，ack=1时，发送ACK，ack=0，发送nACK
+uint8_t IIC::read_byte(unsigned char ack_chr) {
+  unsigned char receive = 0;
+  SDA_IN(); // SDA设置为输入
+  LOOP_L_N(i, 8) {
+    IIC_SCL_0();
+    delay_us(2);
+    IIC_SCL_1();
+    receive <<= 1;
+    if (READ_SDA()) receive++;
+    delay_us(1);
+  }
+  ack_chr ? ack() : nAck(); // 发送ACK / 发送nACK
+  return receive;
+}
+
+/******************** EEPROM ********************/
+
+// 初始化IIC接口
+void BL24CXX::init() { IIC::init(); }
+
+// 在BL24CXX指定地址读出一个数据
+// ReadAddr:开始读数的地址
+// 返回值  :读到的数据
+uint8_t BL24CXX::readOneByte(uint16_t ReadAddr) {
+  uint8_t temp = 0;
+  IIC::start();
+  if (EE_TYPE > BL24C16) {
+    IIC::send_byte(0xA0);     // 发送写命令
+    IIC::wait_ack();
+    IIC::send_byte(ReadAddr >> 8); // 发送高地址
+    IIC::wait_ack();
+  }
+  else
+    IIC::send_byte(0xA0 + ((ReadAddr >> 8) << 1));   // 发送器件地址0xA0,写数据
+
+  IIC::wait_ack();
+  IIC::send_byte(ReadAddr & 0xFF); // 发送低地址
+  IIC::wait_ack();
+  IIC::start();
+  IIC::send_byte(0xA1);           // 进入接收模式
+  IIC::wait_ack();
+  temp = IIC::read_byte(0);
+  IIC::stop(); // 产生一个停止条件
+  return temp;
+}
+
+// 在BL24CXX指定地址写入一个数据
+// WriteAddr  :写入数据的目的地址
+// DataToWrite:要写入的数据
+void BL24CXX::writeOneByte(uint16_t WriteAddr, uint8_t DataToWrite) {
+  IIC::start();
+  if (EE_TYPE > BL24C16) {
+    IIC::send_byte(0xA0);      // 发送写命令
+    IIC::wait_ack();
+    IIC::send_byte(WriteAddr >> 8); // 发送高地址
+  }
+  else {
+    IIC::send_byte(0xA0 + ((WriteAddr >> 8) << 1));   // 发送器件地址0xA0,写数据
+  }
+  IIC::wait_ack();
+  IIC::send_byte(WriteAddr & 0xFF); // 发送低地址
+  IIC::wait_ack();
+  IIC::send_byte(DataToWrite);     // 发送字节
+  IIC::wait_ack();
+  IIC::stop(); // 产生一个停止条件
+  delay(10);
+}
+
+// 在BL24CXX里面的指定地址开始写入长度为Len的数据
+// 该函数用于写入16bit或者32bit的数据.
+// WriteAddr  :开始写入的地址
+// DataToWrite:数据数组首地址
+// Len        :要写入数据的长度2,4
+void BL24CXX::writeLenByte(uint16_t WriteAddr, uint32_t DataToWrite, uint8_t Len) {
+  LOOP_L_N(t, Len)
+    writeOneByte(WriteAddr + t, (DataToWrite >> (8 * t)) & 0xFF);
+}
+
+// 在BL24CXX里面的指定地址开始读出长度为Len的数据
+// 该函数用于读出16bit或者32bit的数据.
+// ReadAddr   :开始读出的地址
+// 返回值     :数据
+// Len        :要读出数据的长度2,4
+uint32_t BL24CXX::readLenByte(uint16_t ReadAddr, uint8_t Len) {
+  uint32_t temp = 0;
+  LOOP_L_N(t, Len) {
+    temp <<= 8;
+    temp += readOneByte(ReadAddr + Len - t - 1);
+  }
+  return temp;
+}
+
+// 检查BL24CXX是否正常
+// 这里用了24XX的最后一个地址(255)来存储标志字.
+// 如果用其他24C系列,这个地址要修改
+// 返回1:检测失败
+// 返回0:检测成功
+uint8_t BL24CXX::check() {
+  uint8_t temp;
+  temp = readOneByte(255); // 避免每次开机都写BL24CXX
+  if (temp == 'U') return 0;
+  else { // 排除第一次初始化的情况
+    writeOneByte(255, 'U');
+    temp = readOneByte(255);
+    if (temp == 'U') return 0;
+  }
+  return 1;
+}
+
+// 在BL24CXX里面的指定地址开始读出指定个数的数据
+// ReadAddr :开始读出的地址 对24c02为0~255
+// pBuffer  :数据数组首地址
+// NumToRead:要读出数据的个数
+void BL24CXX::read(uint16_t ReadAddr, uint8_t *pBuffer, uint16_t NumToRead) {
+  while (NumToRead) {
+    *pBuffer++ = readOneByte(ReadAddr++);
+    NumToRead--;
+  }
+}
+
+// 在BL24CXX里面的指定地址开始写入指定个数的数据
+// WriteAddr :开始写入的地址 对24c02为0~255
+// pBuffer   :数据数组首地址
+// NumToWrite:要写入数据的个数
+void BL24CXX::write(uint16_t WriteAddr, uint8_t *pBuffer, uint16_t NumToWrite) {
+  while (NumToWrite--) {
+    writeOneByte(WriteAddr, *pBuffer);
+    WriteAddr++;
+    pBuffer++;
+  }
+}
+
+#endif // IIC_BL24CXX_EEPROM

Marlin/src/lcd/dwin/eeprom_BL24CXX.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 <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/********************************************************************************
+ * @file     eeprom_BL24CXX.h
+ * @brief    i2c EEPROM for Ender 3 v2 board (4.2.2)
+ ********************************************************************************/
+
+#include <libmaple/gpio.h>
+
+/******************** IIC ********************/
+
+//IO方向设置
+#define SDA_IN()  do{ PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH &= 0XFFFF0FFF; PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH |= 8 << 12; }while(0)
+#define SDA_OUT() do{ PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH &= 0XFFFF0FFF; PIN_MAP[IIC_EEPROM_SDA].gpio_device->regs->CRH |= 3 << 12; }while(0)
+
+//IO操作函数
+#define IIC_SCL_0()   WRITE(IIC_EEPROM_SCL, LOW)
+#define IIC_SCL_1()   WRITE(IIC_EEPROM_SCL, HIGH)
+#define IIC_SDA_0()   WRITE(IIC_EEPROM_SDA, LOW)
+#define IIC_SDA_1()   WRITE(IIC_EEPROM_SDA, HIGH)
+#define READ_SDA()    READ(IIC_EEPROM_SDA)
+
+class BL24CXX;
+
+// IIC所有操作函数
+class IIC {
+friend class BL24CXX;
+protected:
+  static void init();                // 初始化IIC的IO口
+  static void start();               // 发送IIC开始信号
+  static void stop();                // 发送IIC停止信号
+  static void send_byte(uint8_t txd); // IIC发送一个字节
+  static uint8_t read_byte(unsigned char ack); // IIC读取一个字节
+  static uint8_t wait_ack();         // IIC等待ACK信号
+  static void ack();                 // IIC发送ACK信号
+  static void nAck();                // IIC不发送ACK信号
+
+  static void write_one_byte(uint8_t daddr, uint8_t addr, uint8_t data);
+  static uint8_t read_one_byte(uint8_t daddr, uint8_t addr);
+};
+
+/******************** EEPROM ********************/
+
+#define BL24C01     127
+#define BL24C02     255
+#define BL24C04     511
+#define BL24C08    1023
+#define BL24C16    2047
+#define BL24C32    4095
+#define BL24C64    8191
+#define BL24C128  16383
+#define BL24C256  32767
+#define EE_TYPE BL24C16
+
+class BL24CXX {
+public:
+  static void init(); //初始化IIC
+  static uint8_t check();  //检查器件
+  static uint8_t readOneByte(uint16_t ReadAddr);                       //指定地址读取一个字节
+  static void writeOneByte(uint16_t WriteAddr, uint8_t DataToWrite);   //指定地址写入一个字节
+  static void writeLenByte(uint16_t WriteAddr, uint32_t DataToWrite, uint8_t Len);//指定地址开始写入指定长度的数据
+  static uint32_t readLenByte(uint16_t ReadAddr, uint8_t Len);         //指定地址开始读取指定长度数据
+  static void write(uint16_t WriteAddr, uint8_t *pBuffer, uint16_t NumToWrite);  //从指定地址开始写入指定长度的数据
+  static void read(uint16_t ReadAddr, uint8_t *pBuffer, uint16_t NumToRead);     //从指定地址开始读出指定长度的数据
+};

Marlin/src/lcd/dwin/rotary_encoder.cpp

+/**
+ * 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/>.
+ *
+ */
+
+/**
+  ******************************************************************************
+  * @file     rotary_encoder.cpp
+  * @author   LEO / Creality3D
+  * @date     2019/07/06
+  * @version  2.0.1
+  * @brief    旋转编码器操作函数
+  ******************************************************************************
+**/
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(DWIN_CREALITY_LCD)
+
+#include "rotary_encoder.h"
+
+#include "../../MarlinCore.h"
+#include "../../HAL/shared/Delay.h"
+
+#if HAS_BUZZER
+  #include "../../libs/buzzer.h"
+#endif
+
+#include <stdlib.h>
+
+ENCODER_Rate EncoderRate;
+
+/*蜂鸣器响*/
+void Encoder_tick(void) {
+  WRITE(BEEPER_PIN,1);
+  delay(10);
+  WRITE(BEEPER_PIN,0);
+}
+
+/*编码器初始化 PB12:Encoder_A PB13:Encoder_B PB14:Encoder_C*/
+void Encoder_Configuration(void) {
+  #if BUTTON_EXISTS(EN1)
+    SET_INPUT_PULLUP(BTN_EN1);
+  #endif
+  #if BUTTON_EXISTS(EN2)
+    SET_INPUT_PULLUP(BTN_EN2);
+  #endif
+  #if BUTTON_EXISTS(ENC)
+    SET_INPUT_PULLUP(BTN_ENC);
+  #endif
+  #ifdef BEEPER_PIN
+    SET_OUTPUT(BEEPER_PIN);
+  #endif
+}
+
+millis_t next_click_update_ms;
+/*接收数据解析 返回值:ENCODER_DIFF_NO,无状态; ENCODER_DIFF_CW,顺时针旋转; ENCODER_DIFF_CCW,逆时针旋转; ENCODER_DIFF_ENTER,按下*/
+ENCODER_DiffState Encoder_ReceiveAnalyze(void) {
+  const millis_t now = millis();
+  static unsigned char lastEncoderBits;
+  unsigned char newbutton = 0;
+  static signed char temp_diff = 0;
+
+  ENCODER_DiffState temp_diffState = ENCODER_DIFF_NO;
+  if (BUTTON_PRESSED(EN1)) newbutton |= 0x01;
+  if (BUTTON_PRESSED(EN2)) newbutton |= 0x02;
+  if (BUTTON_PRESSED(ENC)) {
+    if (ELAPSED(now, next_click_update_ms)) {
+      next_click_update_ms = millis() + 300;
+      Encoder_tick();
+      #if PIN_EXISTS(LCD_LED)
+        //LED_Action();
+      #endif
+      return ENCODER_DIFF_ENTER;
+    }
+    else return ENCODER_DIFF_NO;
+  }
+  if (newbutton != lastEncoderBits) {
+    switch (newbutton) {
+      case ENCODER_PHASE_0: {
+        if (lastEncoderBits == ENCODER_PHASE_3) temp_diff++;
+        else if (lastEncoderBits == ENCODER_PHASE_1) temp_diff--;
+      }break;
+      case ENCODER_PHASE_1: {
+        if (lastEncoderBits == ENCODER_PHASE_0) temp_diff++;
+        else if (lastEncoderBits == ENCODER_PHASE_2) temp_diff--;
+      }break;
+      case ENCODER_PHASE_2: {
+        if (lastEncoderBits == ENCODER_PHASE_1) temp_diff++;
+        else if (lastEncoderBits == ENCODER_PHASE_3) temp_diff--;
+      }break;
+      case ENCODER_PHASE_3: {
+        if (lastEncoderBits == ENCODER_PHASE_2) temp_diff++;
+        else if (lastEncoderBits == ENCODER_PHASE_0) temp_diff--;
+      }break;
+    }
+    lastEncoderBits = newbutton;
+  }
+
+  if (abs(temp_diff) >= ENCODER_PULSES_PER_STEP) {
+    if (temp_diff > 0) temp_diffState = ENCODER_DIFF_CW;
+    else temp_diffState = ENCODER_DIFF_CCW;
+
+    #if ENABLED(ENCODER_RATE_MULTIPLIER)
+
+      millis_t ms = millis();
+      int32_t encoderMultiplier = 1;
+
+      // if must encoder rati multiplier
+      if (EncoderRate.encoderRateEnabled) {
+        const float abs_diff = ABS(temp_diff);
+        const float encoderMovementSteps = abs_diff / (ENCODER_PULSES_PER_STEP);
+        if (EncoderRate.lastEncoderTime) {
+          // Note that the rate is always calculated between two passes through the
+          // loop and that the abs of the temp_diff value is tracked.
+          const float encoderStepRate = encoderMovementSteps / float(ms - EncoderRate.lastEncoderTime) * 1000;
+          if (encoderStepRate >= ENCODER_100X_STEPS_PER_SEC)  encoderMultiplier = 100;
+          else if (encoderStepRate >= ENCODER_10X_STEPS_PER_SEC) encoderMultiplier = 10;
+          else if (encoderStepRate >= ENCODER_5X_STEPS_PER_SEC) encoderMultiplier = 5;
+        }
+        EncoderRate.lastEncoderTime = ms;
+      }
+    #else
+      constexpr int32_t encoderMultiplier = 1;
+    #endif // ENCODER_RATE_MULTIPLIER
+
+    // EncoderRate.encoderMoveValue += (temp_diff * encoderMultiplier) / (ENCODER_PULSES_PER_STEP);
+    EncoderRate.encoderMoveValue = (temp_diff * encoderMultiplier) / (ENCODER_PULSES_PER_STEP);
+    if (EncoderRate.encoderMoveValue < 0) EncoderRate.encoderMoveValue = -EncoderRate.encoderMoveValue;
+
+    temp_diff = 0;
+  }
+  return temp_diffState;
+}
+
+#if PIN_EXISTS(LCD_LED)
+
+  /*取低24位有效  24Bit: G7 G6 G5 G4 G3 G2 G1 G0 R7 R6 R5 R4 R3 R2 R1 R0 B7 B6 B5 B4 B3 B2 B1 B0*/
+  unsigned int LED_DataArray[LED_NUM];
+
+  /*LED灯操作*/
+  void LED_Action(void) {
+    LED_Control(RGB_SCALE_WARM_WHITE,0x0F);
+    delay(30);
+    LED_Control(RGB_SCALE_WARM_WHITE,0x00);
+  }
+
+  /*LED初始化*/
+  void LED_Configuration(void) {
+    SET_OUTPUT(LCD_LED_PIN);
+  }
+
+  /*LED写数据*/
+  void LED_WriteData(void) {
+    unsigned char tempCounter_LED, tempCounter_Bit;
+    for (tempCounter_LED = 0; tempCounter_LED < LED_NUM; tempCounter_LED++) {
+      for (tempCounter_Bit = 0; tempCounter_Bit < 24; tempCounter_Bit++) {
+        if (LED_DataArray[tempCounter_LED] & (0x800000 >> tempCounter_Bit)) {
+          LED_DATA_HIGH;
+          DELAY_NS(300);
+          LED_DATA_LOW;
+          DELAY_NS(200);
+        }
+        else {
+          LED_DATA_HIGH;
+          LED_DATA_LOW;
+          DELAY_NS(200);
+        }
+      }
+    }
+  }
+
+  /*LED控制 RGB_Scale:RGB色彩配比 luminance:亮度(0~0xFF)*/
+  void LED_Control(unsigned char RGB_Scale, unsigned char luminance) {
+    unsigned char temp_Counter;
+    for (temp_Counter = 0; temp_Counter < LED_NUM; temp_Counter++) {
+      LED_DataArray[temp_Counter] = 0;
+      switch(RGB_Scale) {
+        case RGB_SCALE_R10_G7_B5: LED_DataArray[temp_Counter] = (luminance*10/10) << 8 | (luminance*7/10) << 16 | luminance*5/10; break;
+        case RGB_SCALE_R10_G7_B4: LED_DataArray[temp_Counter] = (luminance*10/10) << 8 | (luminance*7/10) << 16 | luminance*4/10; break;
+        case RGB_SCALE_R10_G8_B7: LED_DataArray[temp_Counter] = (luminance*10/10) << 8 | (luminance*8/10) << 16 | luminance*7/10; break;
+      }
+    }
+    LED_WriteData();
+  }
+
+  /*LED渐变控制 RGB_Scale:RGB色彩配比 luminance:亮度(0~0xFF) change_Time:渐变时间(ms)*/
+  void LED_GraduallyControl(unsigned char RGB_Scale, unsigned char luminance, unsigned int change_Interval) {
+    unsigned char temp_Counter;
+    unsigned char LED_R_Data[LED_NUM], LED_G_Data[LED_NUM], LED_B_Data[LED_NUM];
+    bool LED_R_Flag = 0, LED_G_Flag = 0, LED_B_Flag = 0;
+
+    for (temp_Counter = 0; temp_Counter < LED_NUM; temp_Counter++) {
+      switch(RGB_Scale) {
+        case RGB_SCALE_R10_G7_B5: {
+          LED_R_Data[temp_Counter] = luminance*10/10;
+          LED_G_Data[temp_Counter] = luminance*7/10;
+          LED_B_Data[temp_Counter] = luminance*5/10;
+        }break;
+        case RGB_SCALE_R10_G7_B4: {
+          LED_R_Data[temp_Counter] = luminance*10/10;
+          LED_G_Data[temp_Counter] = luminance*7/10;
+          LED_B_Data[temp_Counter] = luminance*4/10;
+        }break;
+        case RGB_SCALE_R10_G8_B7: {
+          LED_R_Data[temp_Counter] = luminance*10/10;
+          LED_G_Data[temp_Counter] = luminance*8/10;
+          LED_B_Data[temp_Counter] = luminance*7/10;
+        }break;
+      }
+    }
+      for (temp_Counter = 0; temp_Counter < LED_NUM; temp_Counter++) {
+        if ((unsigned char)(LED_DataArray[temp_Counter] >> 8) > LED_R_Data[temp_Counter]) LED_DataArray[temp_Counter] -= 0x000100;
+        else if ((unsigned char)(LED_DataArray[temp_Counter] >> 8) < LED_R_Data[temp_Counter]) LED_DataArray[temp_Counter] += 0x000100;
+    while (1) {
+        else LED_R_Flag = 1;
+        if ((unsigned char)(LED_DataArray[temp_Counter]>>16) > LED_G_Data[temp_Counter]) LED_DataArray[temp_Counter] -= 0x010000;
+        else if ((unsigned char)(LED_DataArray[temp_Counter]>>16) < LED_G_Data[temp_Counter]) LED_DataArray[temp_Counter] += 0x010000;
+        else LED_G_Flag = 1;
+        if ((unsigned char)LED_DataArray[temp_Counter] > LED_B_Data[temp_Counter]) LED_DataArray[temp_Counter] -= 0x000001;
+        else if ((unsigned char)LED_DataArray[temp_Counter] < LED_B_Data[temp_Counter]) LED_DataArray[temp_Counter] += 0x000001;
+        else LED_B_Flag = 1;
+      }
+      LED_WriteData();
+      if (LED_R_Flag && LED_G_Flag && LED_B_Flag) break;
+      else delay(change_Interval);
+    }
+  }
+
+#endif
+
+#endif // DWIN_CREALITY_LCD

Marlin/src/lcd/dwin/rotary_encoder.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 <http://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+  ******************************************************************************
+  * @file     rotary_encoder.h
+  * @author   LEO / Creality3D
+  * @date     2019/07/06
+  * @version  2.0.1
+  * @brief    旋转编码器操作函数
+  ******************************************************************************
+**/
+
+#include "../../inc/MarlinConfig.h"
+#include "../../MarlinCore.h"
+
+/*********************** Encoder Set ***********************/
+
+#define ENCODER_PHASE_0  0
+#define ENCODER_PHASE_1  2
+#define ENCODER_PHASE_2  3
+#define ENCODER_PHASE_3  1
+
+#define ENCODER_PULSES_PER_STEP  4
+
+#define BUTTON_PRESSED(BN) !READ(BTN_## BN)
+
+typedef struct {
+  bool encoderRateEnabled = 0;
+  int encoderMoveValue = 0;
+  millis_t lastEncoderTime = 0;
+} ENCODER_Rate;
+
+extern ENCODER_Rate EncoderRate;
+
+typedef enum {
+  ENCODER_DIFF_NO    = 0,
+	ENCODER_DIFF_CW    = 1,
+  ENCODER_DIFF_CCW   = 2,
+	ENCODER_DIFF_ENTER = 3
+} ENCODER_DiffState;
+
+/*编码器初始化 PB12:Encoder_A PB13:Encoder_B PB14:Encoder_C*/
+void Encoder_Configuration(void);
+
+/*接收数据解析 返回值:ENCODER_DIFF_NO,无状态; ENCODER_DIFF_CW,顺时针旋转; ENCODER_DIFF_CCW,逆时针旋转; ENCODER_DIFF_ENTER,按下*/
+ENCODER_DiffState Encoder_ReceiveAnalyze(void);
+
+
+/*********************** Encoder LED ***********************/
+
+#if PIN_EXISTS(LCD_LED)
+
+  #define LED_NUM  4
+  #define LED_DATA_HIGH  WRITE(LCD_LED_PIN, 1)
+  #define LED_DATA_LOW   WRITE(LCD_LED_PIN, 0)
+
+  #define RGB_SCALE_R10_G7_B5  1
+  #define RGB_SCALE_R10_G7_B4  2
+  #define RGB_SCALE_R10_G8_B7  3
+  #define RGB_SCALE_NEUTRAL_WHITE  RGB_SCALE_R10_G7_B5 //正白
+  #define RGB_SCALE_WARM_WHITE  RGB_SCALE_R10_G7_B4 //暖白
+  #define RGB_SCALE_COOL_WHITE  RGB_SCALE_R10_G8_B7 //冷白
+
+  extern unsigned int LED_DataArray[LED_NUM];
+
+  /*状态LED初始化*/
+  void STATE_LED_Configuration(void);
+
+	/*LED灯操作*/
+  void LED_Action(void);
+
+  /*LED初始化*/
+  void LED_Configuration(void);
+
+  /*LED写数据*/
+  void LED_WriteData(void);
+
+  /*LED控制 RGB_Scale:RGB色彩配比 luminance:亮度(0~0xFF)*/
+  void LED_Control(unsigned char RGB_Scale, unsigned char luminance);
+
+  /*LED渐变控制 RGB_Scale:RGB色彩配比 luminance:亮度(0~0xFF) change_Time:渐变时间(ms)*/
+  void LED_GraduallyControl(unsigned char RGB_Scale, unsigned char luminance, unsigned int change_Interval);
+
+#endif

Marlin/src/lcd/ultralcd.cpp

   #include "../gcode/queue.h"
   #include "fontutils.h"
   #include "../sd/cardreader.h"
-  #if ENABLED(EXTENSIBLE_UI)
+  #if EITHER(EXTENSIBLE_UI, DWIN_CREALITY_LCD)
     #define START_OF_UTF8_CHAR(C) (((C) & 0xC0u) != 0x80u)
   #endif
 #endif
   #else
     constexpr uint8_t MAX_MESSAGE_LENGTH = MAX_LANG_CHARSIZE * (LCD_WIDTH);
   #endif
-#elif ENABLED(EXTENSIBLE_UI)
+#elif EITHER(EXTENSIBLE_UI, DWIN_CREALITY_LCD)
   constexpr uint8_t MAX_MESSAGE_LENGTH = 63;
 #endif
 
   volatile int8_t encoderDiff; // Updated in update_buttons, added to encoderPosition every LCD update
 #endif
 
-#if HAS_LCD_MENU
-  #include "menu/menu.h"
-  #include "../sd/cardreader.h"
+#if ENABLED(SDSUPPORT)
 
-  #if ENABLED(SDSUPPORT)
+  #include "../sd/cardreader.h"
 
-    #if ENABLED(SCROLL_LONG_FILENAMES)
-      uint8_t MarlinUI::filename_scroll_pos, MarlinUI::filename_scroll_max;
-    #endif
+  #if MARLINUI_SCROLL_NAME
+    uint8_t MarlinUI::filename_scroll_pos, MarlinUI::filename_scroll_max;
+  #endif
 
-    const char * MarlinUI::scrolled_filename(CardReader &theCard, const uint8_t maxlen, uint8_t hash, const bool doScroll) {
-      const char *outstr = theCard.longest_filename();
-      if (theCard.longFilename[0]) {
-        #if ENABLED(SCROLL_LONG_FILENAMES)
-          if (doScroll) {
-            for (uint8_t l = FILENAME_LENGTH; l--;)
-              hash = ((hash << 1) | (hash >> 7)) ^ theCard.filename[l];      // rotate, xor
-            static uint8_t filename_scroll_hash;
-            if (filename_scroll_hash != hash) {                              // If the hash changed...
-              filename_scroll_hash = hash;                                   // Save the new hash
-              filename_scroll_max = _MAX(0, utf8_strlen(theCard.longFilename) - maxlen); // Update the scroll limit
-              filename_scroll_pos = 0;                                       // Reset scroll to the start
-              lcd_status_update_delay = 8;                                   // Don't scroll right away
-            }
-            outstr += filename_scroll_pos;
+  const char * MarlinUI::scrolled_filename(CardReader &theCard, const uint8_t maxlen, uint8_t hash, const bool doScroll) {
+    const char *outstr = theCard.longest_filename();
+    if (theCard.longFilename[0]) {
+      #if MARLINUI_SCROLL_NAME
+        if (doScroll) {
+          for (uint8_t l = FILENAME_LENGTH; l--;)
+            hash = ((hash << 1) | (hash >> 7)) ^ theCard.filename[l];      // rotate, xor
+          static uint8_t filename_scroll_hash;
+          if (filename_scroll_hash != hash) {                              // If the hash changed...
+            filename_scroll_hash = hash;                                   // Save the new hash
+            filename_scroll_max = _MAX(0, utf8_strlen(theCard.longFilename) - maxlen); // Update the scroll limit
+            filename_scroll_pos = 0;                                       // Reset scroll to the start
+            lcd_status_update_delay = 8;                                   // Don't scroll right away
           }
-        #else
-          theCard.longFilename[maxlen] = '\0'; // cutoff at screen edge
-        #endif
-      }
-      return outstr;
+          outstr += filename_scroll_pos;
+        }
+      #else
+        theCard.longFilename[maxlen] = '\0'; // cutoff at screen edge
+      #endif
     }
+    return outstr;
+  }
 
-  #endif
+#endif
+
+#if HAS_LCD_MENU
+  #include "menu/menu.h"
 
   screenFunc_t MarlinUI::currentScreen; // Initialized in CTOR
   bool MarlinUI::screen_changed;
         set_status_P(eeprom_err(msgid));
       #endif
     }
-  #endif
-#endif
+
+  #endif // EEPROM_AUTO_INIT
+
+#endif // EEPROM_SETTINGS

Marlin/src/lcd/ultralcd.h

   #include "../libs/buzzer.h"
 #endif
 
+#if ENABLED(SDSUPPORT)
+  #include "../sd/cardreader.h"
+#endif
+
 #if EITHER(HAS_LCD_MENU, ULTIPANEL_FEEDMULTIPLY)
   #define HAS_ENCODER_ACTION 1
 #endif
 
   #endif // HAS_LCD_MENU
 
-#endif
+#endif // HAS_SPI_LCD
 
 // REPRAPWORLD_KEYPAD (and ADC_KEYPAD)
 #if ENABLED(REPRAPWORLD_KEYPAD)
     static void init_lcd();
     FORCE_INLINE static void refresh() { refresh(LCDVIEW_CLEAR_CALL_REDRAW); }
   #else
+    #if ENABLED(DWIN_CREALITY_LCD)
+      static void refresh();
+    #else
+      static inline void refresh()  {}
+    #endif
     static inline bool detected() { return true; }
     static inline void init_lcd() {}
-    static inline void refresh()  {}
   #endif
 
   #if HAS_DISPLAY
 
   #endif
 
+  #if ENABLED(SDSUPPORT)
+    #if BOTH(SCROLL_LONG_FILENAMES, HAS_LCD_MENU)
+      #define MARLINUI_SCROLL_NAME 1
+    #endif
+    #if MARLINUI_SCROLL_NAME
+      static uint8_t filename_scroll_pos, filename_scroll_max;
+    #endif
+    static const char * scrolled_filename(CardReader &theCard, const uint8_t maxlen, uint8_t hash, const bool doScroll);
+  #endif
+
   #if HAS_LCD_MENU
 
     #if ENABLED(TOUCH_BUTTONS)
       static void enable_encoder_multiplier(const bool onoff);
     #endif
 
-    #if ENABLED(SDSUPPORT)
-      #if ENABLED(SCROLL_LONG_FILENAMES)
-        static uint8_t filename_scroll_pos, filename_scroll_max;
-      #endif
-      static const char * scrolled_filename(CardReader &theCard, const uint8_t maxlen, uint8_t hash, const bool doScroll);
-    #endif
-
     #if IS_KINEMATIC
       static bool processing_manual_move;
     #else

Marlin/src/module/configuration_store.cpp

 #include "planner.h"
 #include "stepper.h"
 #include "temperature.h"
+
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "../lcd/dwin/dwin.h"
+#endif
+
 #include "../lcd/ultralcd.h"
 #include "../libs/vector_3.h"   // for matrix_3x3
 #include "../gcode/gcode.h"
         const int16_t (&ui_preheat_hotend_temp)[2]  = ui.preheat_hotend_temp,
                       (&ui_preheat_bed_temp)[2]     = ui.preheat_bed_temp;
         const uint8_t (&ui_preheat_fan_speed)[2]    = ui.preheat_fan_speed;
+      #elif ENABLED(DWIN_CREALITY_LCD)
+        const int16_t (&ui_preheat_hotend_temp)[2]  = HMI_ValueStruct.preheat_hotend_temp,
+                      (&ui_preheat_bed_temp)[2]     = HMI_ValueStruct.preheat_bed_temp;
+        const uint8_t (&ui_preheat_fan_speed)[2]    = HMI_ValueStruct.preheat_fan_speed;
       #else
         constexpr int16_t ui_preheat_hotend_temp[2] = { PREHEAT_1_TEMP_HOTEND, PREHEAT_2_TEMP_HOTEND },
                           ui_preheat_bed_temp[2]    = { PREHEAT_1_TEMP_BED, PREHEAT_2_TEMP_BED };
           int16_t (&ui_preheat_hotend_temp)[2]  = ui.preheat_hotend_temp,
                   (&ui_preheat_bed_temp)[2]     = ui.preheat_bed_temp;
           uint8_t (&ui_preheat_fan_speed)[2]    = ui.preheat_fan_speed;
-        #else
+       #elif ENABLED(DWIN_CREALITY_LCD)
+          int16_t (&ui_preheat_hotend_temp)[2]  = HMI_ValueStruct.preheat_hotend_temp,
+                  (&ui_preheat_bed_temp)[2]     = HMI_ValueStruct.preheat_bed_temp;
+          uint8_t (&ui_preheat_fan_speed)[2]    = HMI_ValueStruct.preheat_fan_speed;
+       #else
           int16_t ui_preheat_hotend_temp[2], ui_preheat_bed_temp[2];
           uint8_t ui_preheat_fan_speed[2];
         #endif
   //
   // Preheat parameters
   //
-
-  #if HAS_HOTEND && HAS_LCD_MENU
-    ui.preheat_hotend_temp[0] = PREHEAT_1_TEMP_HOTEND;
-    ui.preheat_hotend_temp[1] = PREHEAT_2_TEMP_HOTEND;
-    ui.preheat_bed_temp[0] = PREHEAT_1_TEMP_BED;
-    ui.preheat_bed_temp[1] = PREHEAT_2_TEMP_BED;
-    ui.preheat_fan_speed[0] = PREHEAT_1_FAN_SPEED;
-    ui.preheat_fan_speed[1] = PREHEAT_2_FAN_SPEED;
+  #if HAS_HOTEND
+    #if ENABLED(DWIN_CREALITY_LCD)
+      HMI_ValueStruct.preheat_hotend_temp[0] = PREHEAT_1_TEMP_HOTEND;
+      HMI_ValueStruct.preheat_hotend_temp[1] = PREHEAT_2_TEMP_HOTEND;
+      HMI_ValueStruct.preheat_bed_temp[0] = PREHEAT_1_TEMP_BED;
+      HMI_ValueStruct.preheat_bed_temp[1] = PREHEAT_2_TEMP_BED;
+      HMI_ValueStruct.preheat_fan_speed[0] = PREHEAT_1_FAN_SPEED;
+      HMI_ValueStruct.preheat_fan_speed[1] = PREHEAT_2_FAN_SPEED;
+    #elif HAS_LCD_MENU
+      ui.preheat_hotend_temp[0] = PREHEAT_1_TEMP_HOTEND;
+      ui.preheat_hotend_temp[1] = PREHEAT_2_TEMP_HOTEND;
+      ui.preheat_bed_temp[0] = PREHEAT_1_TEMP_BED;
+      ui.preheat_bed_temp[1] = PREHEAT_2_TEMP_BED;
+      ui.preheat_fan_speed[0] = PREHEAT_1_FAN_SPEED;
+      ui.preheat_fan_speed[1] = PREHEAT_2_FAN_SPEED;
+    #endif
   #endif
 
   //

Marlin/src/module/temperature.cpp

 #include "../HAL/shared/Delay.h"
 
 #include "../lcd/ultralcd.h"
+
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "../lcd/dwin/dwin.h"
+#endif
+
 #if ENABLED(EXTENSIBLE_UI)
   #include "../lcd/extui/ui_api.h"
 #endif
         #define MAX_CYCLE_TIME_PID_AUTOTUNE 20L
       #endif
       if (((ms - t1) + (ms - t2)) > (MAX_CYCLE_TIME_PID_AUTOTUNE * 60L * 1000L)) {
+        TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(0));
         TERN_(EXTENSIBLE_UI, ExtUI::onPidTuning(ExtUI::result_t::PID_TUNING_TIMEOUT));
         SERIAL_ECHOLNPGM(STR_PID_TIMEOUT);
         break;
 
         goto EXIT_M303;
       }
-      ui.update();
+      TERN(DWIN_CREALITY_LCD, DWIN_Update(), ui.update());
     }
 
     disable_all_heaters();
 }
 
 void Temperature::max_temp_error(const heater_ind_t heater) {
+  TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(1));
   _temp_error(heater, PSTR(STR_T_MAXTEMP), GET_TEXT(MSG_ERR_MAXTEMP));
 }
 
 void Temperature::min_temp_error(const heater_ind_t heater) {
+  TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(0));
   _temp_error(heater, PSTR(STR_T_MINTEMP), GET_TEXT(MSG_ERR_MINTEMP));
 }
 
       #if WATCH_HOTENDS
         // Make sure temperature is increasing
         if (watch_hotend[e].next_ms && ELAPSED(ms, watch_hotend[e].next_ms)) {  // Time to check this extruder?
-          if (degHotend(e) < watch_hotend[e].target)                            // Failed to increase enough?
+          if (degHotend(e) < watch_hotend[e].target) {                          // Failed to increase enough?
+            TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(0));
             _temp_error((heater_ind_t)e, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
+          }
           else                                                                  // Start again if the target is still far off
             start_watching_hotend(e);
         }
     #if WATCH_BED
       // Make sure temperature is increasing
       if (watch_bed.elapsed(ms)) {        // Time to check the bed?
-        if (degBed() < watch_bed.target)                                // Failed to increase enough?
+        if (degBed() < watch_bed.target) {                              // Failed to increase enough?
+          TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(0));
           _temp_error(H_BED, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
+        }
         else                                                            // Start again if the target is still far off
           start_watching_bed();
       }
         sm.state = TRRunaway;
 
       case TRRunaway:
+        TERN_(DWIN_CREALITY_LCD, Popup_Window_Temperature(0));
         _temp_error(heater_id, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
     }
   }
       } while (wait_for_heatup && TEMP_CONDITIONS);
 
       if (wait_for_heatup) {
-        ui.reset_status();
+        #if ENABLED(DWIN_CREALITY_LCD)
+          HMI_flag.heat_flag = 0;
+          duration_t elapsed = print_job_timer.duration();  // print timer
+          heat_time = elapsed.value;
+        #else
+          ui.reset_status();
+        #endif
         TERN_(PRINTER_EVENT_LEDS, printerEventLEDs.onHeatingDone());
       }
 

Marlin/src/pins/pins.h

   #include "stm32f1/pins_CHITU3D_V5.h"          // STM32F1                                env:chitu_f103 env:chitu_v5_gpio_init
 #elif MB(CHITU3D_V6)
   #include "stm32f1/pins_CHITU3D_V6.h"          // STM32F1                                env:chitu_f103
+#elif MB(CREALITY_V4)
+  #include "stm32f1/pins_CREALITY_V4.h"         // STM32F1                                env:STM32F103RET6_creality
 
 //
 // ARM Cortex-M4F

Marlin/src/pins/stm32f1/pins_BTT_SKR_MINI_V1_1.h

   #define MOSI_PIN                          PA7
   #define SS_PIN                            PA4
 #endif
-#define ON_BOARD_SPI_DEVICE 1                     //SPI1
+#define ON_BOARD_SPI_DEVICE 1                     // SPI1
 #define ONBOARD_SD_CS_PIN                   PA4   // Chip select for "System" SD card
 
 #if HAS_GRAPHICAL_LCD

Marlin/src/pins/stm32f1/pins_CREALITY_V4.h

+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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/>.
+ *
+ */
+
+/**
+ * CREALITY (STM32F103) board pin assignments
+ */
+
+#ifndef __STM32F1__
+  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
+#endif
+
+#if HOTENDS > 1 || E_STEPPERS > 1
+  #error "CREALITY supports up to 1 hotends / E-steppers. Comment out this line to continue."
+#endif
+
+#define BOARD_INFO_NAME      "CREALITY V4"
+#define DEFAULT_MACHINE_NAME "Ender 3 V2"
+
+//
+// EEPROM
+//
+
+/* I2C */
+#define IIC_BL24CXX_EEPROM                        // EEPROM on I2C-0
+//#define E2END 0x3FFF                            // 16Kb (24c16)
+#define IIC_EEPROM_SDA                      PA11
+#define IIC_EEPROM_SCL                      PA12
+
+// SD EEPROM was in your original build, so...
+#define SDCARD_EEPROM_EMULATION
+
+/* SPI */
+//#define SPI_EEPROM                              // EEPROM on SPI-0
+//#define SPI_CHAN_EEPROM1        ?
+//#define SPI_EEPROM1_CS          ?
+// 2K EEPROM
+//#define SPI_EEPROM2_CS          ?
+// 32Mb FLASH
+//#define SPI_FLASH_CS            ?
+
+/* FLASH */
+//#define FLASH_EEPROM_EMULATION
+
+//
+// Servos
+//
+#define SERVO0_PIN                          PB0   // BLTouch OUT
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN                          PA5
+#define Y_STOP_PIN                          PA6
+#define Z_STOP_PIN                          PA7
+
+#define Z_PROBE_PIN                         PB1   // BLTouch IN
+
+//
+// Steppers
+//
+#define X_ENABLE_PIN                        PC3
+#define X_STEP_PIN                          PC2
+#define X_DIR_PIN                           PB9
+
+#define Y_ENABLE_PIN                        PC3
+#define Y_STEP_PIN                          PB8
+#define Y_DIR_PIN                           PB7
+
+#define Z_ENABLE_PIN                        PC3
+#define Z_STEP_PIN                          PB6
+#define Z_DIR_PIN                           PB5
+
+#define E0_ENABLE_PIN                       PC3
+#define E0_STEP_PIN                         PB4
+#define E0_DIR_PIN                          PB3
+
+//
+// Release PB4 (Y_ENABLE_PIN) from JTAG NRST role
+//
+#define DISABLE_DEBUG
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN                          PC5   // TH1
+#define TEMP_BED_PIN                        PC4   // TB1
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN                        PA1   // HEATER1
+#define HEATER_BED_PIN                      PA2   // HOT BED
+
+#define FAN_PIN                             PA0   // FAN
+#define FAN_SOFT_PWM
+
+//
+// SD Card
+//
+#define SD_DETECT_PIN                       PC7
+#define SDCARD_CONNECTION                ONBOARD
+#define ON_BOARD_SPI_DEVICE 1
+#define ONBOARD_SD_CS_PIN                   PA4  // SDSS
+#define SDIO_SUPPORT
+
+#if ENABLED(RET6_12864_LCD)
+
+  /* RET6 12864 LCD */
+  #define LCD_PINS_RS                       PB12
+  #define LCD_PINS_ENABLE                   PB15
+  #define LCD_PINS_D4                       PB13
+
+  #define BTN_ENC                           PB2
+  #define BTN_EN1                           PB10
+  #define BTN_EN2                           PB14
+
+  #define BEEPER_PIN                        PC6
+#elif ENABLED(VET6_12864_LCD)
+
+  /* VET6 12864 LCD */
+  #define LCD_PINS_RS                       PA4
+  #define LCD_PINS_ENABLE                   PA7
+  #define LCD_PINS_D4                       PA5
+
+  #define BTN_ENC                           PC5
+  #define BTN_EN1                           PB10
+  #define BTN_EN2                           PA6
+
+#elif ENABLED(DWIN_CREALITY_LCD)
+
+  /* RET6 DWIN ENCODER LCD */
+  #define BTN_ENC                           PB14
+  #define BTN_EN1                           PB15
+  #define BTN_EN2                           PB12
+
+  //#define LCD_LED_PIN                     PB2
+  #define BEEPER_PIN                        PB13
+
+#elif ENABLED(DWIN_VET6_CREALITY_LCD)
+
+  /* VET6 DWIN ENCODER LCD */
+  #define BTN_ENC                           PA6
+  #define BTN_EN1                           PA7
+  #define BTN_EN2                           PA4
+
+  #define BEEPER_PIN                        PA5
+
+#endif

Marlin/src/sd/cardreader.cpp

 
 #include "../MarlinCore.h"
 #include "../lcd/ultralcd.h"
+
+#if ENABLED(DWIN_CREALITY_LCD)
+  #include "../lcd/dwin/dwin.h"
+#endif
+
 #include "../module/planner.h"        // for synchronize
 #include "../module/printcounter.h"
 #include "../gcode/queue.h"
 void CardReader::manage_media() {
   static uint8_t prev_stat = TERN(INIT_SDCARD_ON_BOOT, 2, 0);
   uint8_t stat = uint8_t(IS_SD_INSERTED());
-  if (stat != prev_stat && ui.detected()) {
+  if (stat == prev_stat) return;
+
+  flag.workDirIsRoot = true;          // Return to root on mount/release
+
+  if (ui.detected()) {
 
     uint8_t old_stat = prev_stat;
     prev_stat = stat;                 // Change now to prevent re-entry
 void CardReader::release() {
   endFilePrint();
   flag.mounted = false;
+  flag.workDirIsRoot = true;
+  nrFiles = 0;
 }
 
 void CardReader::openAndPrintFile(const char *name) {
 
 void CardReader::endFilePrint(TERN_(SD_RESORT, const bool re_sort/*=false*/)) {
   TERN_(ADVANCED_PAUSE_FEATURE, did_pause_print = 0);
+  TERN_(DWIN_CREALITY_LCD, HMI_flag.print_finish = flag.sdprinting);
   flag.sdprinting = flag.abort_sd_printing = false;
   if (isFileOpen()) file.close();
   TERN_(SD_RESORT, if (re_sort) presort());
             #if HAS_FOLDER_SORTING
               const uint16_t bit = i & 0x07, ind = i >> 3;
               if (bit == 0) isDir[ind] = 0x00;
-              if (flag.filenameIsDir) isDir[ind] |= _BV(bit);
+              if (flag.filenameIsDir) SBI(isDir[ind], bit);
             #endif
           #endif
         }
             #if HAS_FOLDER_SORTING
               #if ENABLED(SDSORT_USES_RAM)
                 // Folder sorting needs an index and bit to test for folder-ness.
-                #define _SORT_CMP_DIR(fs) IS_DIR(o1) == IS_DIR(o2) ? _SORT_CMP_NODIR() : IS_DIR(fs > 0 ? o1 : o2)
+                #define _SORT_CMP_DIR(fs) (IS_DIR(o1) == IS_DIR(o2) ? _SORT_CMP_NODIR() : IS_DIR(fs > 0 ? o1 : o2))
               #else
                 #define _SORT_CMP_DIR(fs) ((dir1 == flag.filenameIsDir) ? _SORT_CMP_NODIR() : (fs > 0 ? dir1 : !dir1))
               #endif
 #endif // SDCARD_SORT_ALPHA
 
 uint16_t CardReader::get_num_Files() {
-  return
-    #if ENABLED(SDCARD_SORT_ALPHA) && SDSORT_USES_RAM && SDSORT_CACHE_NAMES
+  if (!isMounted()) return 0;
+  return (
+    #if ALL(SDCARD_SORT_ALPHA, SDSORT_USES_RAM, SDSORT_CACHE_NAMES)
       nrFiles // no need to access the SD card for filenames
     #else
       countFilesInWorkDir()
     #endif
-  ;
+  );
 }
 
 //
     startFileprint();
   }
   else {
-    endFilePrint();
-
-    TERN_(SDCARD_SORT_ALPHA, presort());
+    endFilePrint(TERN_(SD_RESORT, true));
 
     marlin_state = MF_SD_COMPLETE;
   }

Marlin/src/sd/cardreader.h

 
   static inline bool isFileOpen() { return isMounted() && file.isOpen(); }
   static inline uint32_t getIndex() { return sdpos; }
+  static inline uint32_t getFileSize() { return filesize; }
   static inline bool eof() { return sdpos >= filesize; }
   static inline void setIndex(const uint32_t index) { sdpos = index; file.seekSet(index); }
   static inline char* getWorkDirName() { workDir.getDosName(filename); return filename; }

buildroot/share/PlatformIO/ldscripts/creality.ld

+MEMORY
+{
+  ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K - 40
+  rom (rx)  : ORIGIN = 0x08007000, LENGTH = 512K - 28K
+}
+
+/* Provide memory region aliases for common.inc */
+REGION_ALIAS("REGION_TEXT", rom);
+REGION_ALIAS("REGION_DATA", ram);
+REGION_ALIAS("REGION_BSS", ram);
+REGION_ALIAS("REGION_RODATA", rom);
+
+/* Let common.inc handle the real work. */
+INCLUDE common.inc

buildroot/share/PlatformIO/scripts/creality.py

+import os
+Import("env")
+
+# Relocate firmware from 0x08000000 to 0x08007000
+for define in env['CPPDEFINES']:
+    if define[0] == "VECT_TAB_ADDR":
+        env['CPPDEFINES'].remove(define)
+env['CPPDEFINES'].append(("VECT_TAB_ADDR", "0x08007000"))
+
+custom_ld_script = os.path.abspath("buildroot/share/PlatformIO/ldscripts/creality.ld")
+for i, flag in enumerate(env["LINKFLAGS"]):
+    if "-Wl,-T" in flag:
+        env["LINKFLAGS"][i] = "-Wl,-T" + custom_ld_script
+    elif flag == "-T":
+        env["LINKFLAGS"][i + 1] = custom_ld_script
+

buildroot/share/tests/STM32F103RET6_creality-tests

+#!/usr/bin/env bash
+#
+# Build tests for STM32F103RET6_creality
+#
+
+# exit on first failure
+set -e
+
+#
+# Build with configs included in the PR
+#
+use_example_configs "Creality/Ender-3 V2"
+exec_test $1 $2 "Ender 3 v2"
+
+restore_configs

platformio.ini

 build_flags   = ${env:chitu_f103.build_flags} -DCHITU_V5_Z_MIN_BUGFIX
 
 #
+# Creality (STM32F103RET6)
+#
+[env:STM32F103RET6_creality]
+platform        = ${common_stm32f1.platform}
+extends         = common_stm32f1
+board           = genericSTM32F103RC
+build_flags     = !python Marlin/src/HAL/STM32F1/build_flags.py
+  ${common.build_flags} -std=gnu++14 -DSTM32_XL_DENSITY -DTEMP_TIMER_CHAN=4
+extra_scripts   = buildroot/share/PlatformIO/scripts/creality.py
+lib_ignore      = ${common_stm32f1.lib_ignore}
+  LiquidCrystal, LiquidTWI2, U8glib-HAL, Adafruit_MAX31865, Arduino-L6470, SailfishLCD, SlowSoftI2CMaster
+debug_tool      = jlink
+upload_protocol = jlink
+monitor_speed   = 115200
+
+#
 # STM32F401VE
 # 'STEVAL-3DP001V1' STM32F401VE board - https://www.st.com/en/evaluation-tools/steval-3dp001v1.html
 #