/**
 * Marlin 3D Printer Firmware
 * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 *
 * Based on Sprinter and grbl.
 * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */
#pragma once

/**
 * Creality 4.2.x (STM32F103RE / STM32F103RC) board pin assignments
 */

#include "env_validate.h"

#if HAS_MULTI_HOTEND || E_STEPPERS > 1
  #error "Creality V4 only supports one hotend / E-stepper. Comment out this line to continue."
#endif

#ifndef BOARD_INFO_NAME
  #define BOARD_INFO_NAME      "Creality V4"
#endif
#ifndef DEFAULT_MACHINE_NAME
  #define DEFAULT_MACHINE_NAME "Ender 3 V2"
#endif

#define BOARD_NO_NATIVE_USB

//
// EEPROM
//
#if NO_EEPROM_SELECTED
  #define IIC_BL24CXX_EEPROM                      // EEPROM on I2C-0
  //#define SDCARD_EEPROM_EMULATION
#endif

#if ENABLED(IIC_BL24CXX_EEPROM)
  #define IIC_EEPROM_SDA                    PA11
  #define IIC_EEPROM_SCL                    PA12
  #define MARLIN_EEPROM_SIZE               0x800  // 2Kb (24C16)
#elif ENABLED(SDCARD_EEPROM_EMULATION)
  #define MARLIN_EEPROM_SIZE               0x800  // 2Kb
#endif

//
// Servos
//
#ifndef SERVO0_PIN
  #ifndef HAS_PIN_27_BOARD
    #define SERVO0_PIN                      PB0   // BLTouch IN - Fixed by TH3D
  #else
    #define SERVO0_PIN                      PC6
  #endif
#endif

//
// Limit Switches
//
#define X_STOP_PIN                          PA5
#define Y_STOP_PIN                          PA6
#ifndef Z_STOP_PIN
  #define Z_STOP_PIN                        PA7
#endif

#ifndef Z_MIN_PROBE_PIN
  #define Z_MIN_PROBE_PIN                   PB1   // BLTouch OUT - Fixed by TH3D
#endif

//
// Filament Runout Sensor
//
#if ENABLED(EZOUT_ENABLE) && DISABLED(EZOUT_ENABLE_J1)
  #define FIL_RUNOUT_PIN                    PC6
#elif ENABLED(EZOUT_ENABLE_J1)
  #define FIL_RUNOUT_PIN                    PA4
#else
  #ifndef FIL_RUNOUT_PIN
    #define FIL_RUNOUT_PIN                  PA4   // "Pulled-high"
  #endif
#endif

//
// Steppers
//
#ifndef X_STEP_PIN
  #define X_STEP_PIN                        PC2
#endif
#ifndef X_DIR_PIN
  #define X_DIR_PIN                         PB9
#endif
#define X_ENABLE_PIN                        PC3   // Shared

#ifndef Y_STEP_PIN
  #define Y_STEP_PIN                        PB8
#endif
#ifndef Y_DIR_PIN
  #define Y_DIR_PIN                         PB7
#endif
#define Y_ENABLE_PIN                X_ENABLE_PIN

#ifndef Z_STEP_PIN
  #define Z_STEP_PIN                        PB6
#endif
#ifndef Z_DIR_PIN
  #define Z_DIR_PIN                         PB5
#endif
#define Z_ENABLE_PIN                X_ENABLE_PIN

#ifndef E0_STEP_PIN
  #define E0_STEP_PIN                       PB4
#endif
#ifndef E0_DIR_PIN
  #define E0_DIR_PIN                        PB3
#endif
#define E0_ENABLE_PIN               X_ENABLE_PIN

//
// 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
//
#ifndef HEATER_0_PIN
  #define HEATER_0_PIN                      PA1   // HEATER1
#endif
#ifndef HEATER_BED_PIN
  #define HEATER_BED_PIN                    PA2   // HOT BED
#endif
#ifndef FAN_PIN
  #define FAN_PIN                           PA0   // FAN
#endif
#if PIN_EXISTS(FAN)
  #define FAN_SOFT_PWM
#endif

//
// SD Card
//
#define SD_DETECT_PIN                       PC7
#define SDCARD_CONNECTION                ONBOARD
#define ONBOARD_SPI_DEVICE                     1
#define ONBOARD_SD_CS_PIN                   PA4   // SDSS
#define SDIO_SUPPORT
#define NO_SD_HOST_DRIVE                          // This board's SD is only seen by the printer

#if ENABLED(CR10_STOCKDISPLAY)

  #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
    #if ENABLED(ENDER3_S1_12864_LCD)
      #define BTN_EN1                         PA2
      #define BTN_EN2                         PB14
    #else
      #define BTN_EN1                         PB10
      #define BTN_EN2                         PB14
    #endif

  #if ENABLED(EZOUT_ENABLE) && DISABLED(EZOUT_ENABLE_J1)
    #define BEEPER_PIN                      -1
  #else
    #ifndef HAS_PIN_27_BOARD
      #define BEEPER_PIN                    PC6
    #endif
  #endif

  #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

  #else
    #error "Define RET6_12864_LCD or VET6_12864_LCD to select pins for CR10_STOCKDISPLAY with the Creality V4 controller."
  #endif

#elif EITHER(HAS_DWIN_E3V2, IS_DWIN_MARLINUI)

  // RET6 DWIN ENCODER LCD
  #define BTN_ENC                           PB14
  #define BTN_EN1                           PB15
  #define BTN_EN2                           PB12

  //#define LCD_LED_PIN                     PB2
  #ifndef BEEPER_PIN
    #define BEEPER_PIN                      PB13
  #endif

#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
