SanityCheck.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/>.
 *
 */

/**
 * SanityCheck.h
 *
 * Test configuration values for errors at compile-time.
 */

/**
 * Due to the high number of issues related with old versions of Arduino IDE
 * we now prevent Marlin from compiling with older toolkits.
 */
#if !defined(ARDUINO) || ARDUINO < 10600
  #error "Versions of Arduino IDE prior to 1.6.0 are no longer supported, please update your toolkit."
#endif

/**
 * We try our best to include sanity checks for all the changes configuration
 * directives because people have a tendency to use outdated config files with
 * the bleding edge source code, but sometimes this is not enough. This check
 * will force a minimum config file revision, otherwise Marlin will not build.
 */
#if ! defined(CONFIGURATION_H_VERSION) || CONFIGURATION_H_VERSION < REQUIRED_CONFIGURATION_H_VERSION
  #error "You are using an old Configuration.h file, update it before building Marlin."
#endif

#if ! defined(CONFIGURATION_ADV_H_VERSION) || CONFIGURATION_ADV_H_VERSION < REQUIRED_CONFIGURATION_ADV_H_VERSION
  #error "You are using an old Configuration_adv.h file, update it before building Marlin."
#endif

/**
 * Marlin release, version and default string
 */
#ifndef SHORT_BUILD_VERSION
  #error "SHORT_BUILD_VERSION must be specified."
#elif !defined(DETAILED_BUILD_VERSION)
  #error "BUILD_VERSION must be specified."
#elif !defined(STRING_DISTRIBUTION_DATE)
  #error "STRING_DISTRIBUTION_DATE must be specified."
#elif !defined(PROTOCOL_VERSION)
  #error "PROTOCOL_VERSION must be specified."
#elif !defined(MACHINE_NAME)
  #error "MACHINE_NAME must be specified."
#elif !defined(SOURCE_CODE_URL)
  #error "SOURCE_CODE_URL must be specified."
#elif !defined(DEFAULT_MACHINE_UUID)
  #error "DEFAULT_MACHINE_UUID must be specified."
#elif !defined(WEBSITE_URL)
  #error "WEBSITE_URL must be specified."
#endif

/**
 * Dual Stepper Drivers
 */
#if ENABLED(X_DUAL_STEPPER_DRIVERS) && ENABLED(DUAL_X_CARRIAGE)
  #error "DUAL_X_CARRIAGE is not compatible with X_DUAL_STEPPER_DRIVERS."
#elif ENABLED(X_DUAL_STEPPER_DRIVERS) && (!HAS_X2_ENABLE || !HAS_X2_STEP || !HAS_X2_DIR)
  #error "X_DUAL_STEPPER_DRIVERS requires X2 pins (and an extra E plug)."
#elif ENABLED(Y_DUAL_STEPPER_DRIVERS) && (!HAS_Y2_ENABLE || !HAS_Y2_STEP || !HAS_Y2_DIR)
  #error "Y_DUAL_STEPPER_DRIVERS requires Y2 pins (and an extra E plug)."
#elif ENABLED(Z_DUAL_STEPPER_DRIVERS) && (!HAS_Z2_ENABLE || !HAS_Z2_STEP || !HAS_Z2_DIR)
  #error "Z_DUAL_STEPPER_DRIVERS requires Z2 pins (and an extra E plug)."
#endif

/**
 * Progress Bar
 */
#if ENABLED(LCD_PROGRESS_BAR)
  #if DISABLED(SDSUPPORT)
    #error "LCD_PROGRESS_BAR requires SDSUPPORT."
  #endif
  #if ENABLED(DOGLCD)
    #error "LCD_PROGRESS_BAR does not apply to graphical displays."
  #endif
  #if ENABLED(FILAMENT_LCD_DISPLAY)
    #error "LCD_PROGRESS_BAR and FILAMENT_LCD_DISPLAY are not fully compatible. Comment out this line to use both."
  #endif
#endif

/**
 * Babystepping
 */
#if ENABLED(BABYSTEPPING)
  #if DISABLED(ULTRA_LCD)
    #error "BABYSTEPPING requires an LCD controller."
  #endif
  #if ENABLED(SCARA)
    #error "BABYSTEPPING is not implemented for SCARA yet."
  #endif
  #if ENABLED(DELTA) && ENABLED(BABYSTEP_XY)
    #error "BABYSTEPPING only implemented for Z axis on deltabots."
  #endif
#endif

/**
 * Filament Runout needs a pin and either SD Support or Auto print start detection
 */
#if ENABLED(FILAMENT_RUNOUT_SENSOR)
  #if !HAS_FIL_RUNOUT
    #error "FILAMENT_RUNOUT_SENSOR requires FIL_RUNOUT_PIN."
  #elif DISABLED(SDSUPPORT) && DISABLED(PRINTJOB_TIMER_AUTOSTART)
    #error "FILAMENT_RUNOUT_SENSOR requires SDSUPPORT or PRINTJOB_TIMER_AUTOSTART."
  #endif
#endif

/**
 * Filament Change with Extruder Runout Prevention
 */
#if ENABLED(FILAMENT_CHANGE_FEATURE) && ENABLED(EXTRUDER_RUNOUT_PREVENT)
  #error "EXTRUDER_RUNOUT_PREVENT is incompatible with FILAMENT_CHANGE_FEATURE."
#endif

/**
 * Individual axis homing is useless for DELTAS
 */
#if ENABLED(INDIVIDUAL_AXIS_HOMING_MENU) && ENABLED(DELTA)
  #error "INDIVIDUAL_AXIS_HOMING_MENU is incompatible with DELTA kinematics."
#endif

/**
 * Options only for EXTRUDERS > 1
 */
#if EXTRUDERS > 1

  #if EXTRUDERS > 4
    #error "The maximum number of EXTRUDERS in Marlin is 4."
  #endif

  #if ENABLED(TEMP_SENSOR_1_AS_REDUNDANT)
    #error "EXTRUDERS must be 1 with TEMP_SENSOR_1_AS_REDUNDANT."
  #endif

  #if ENABLED(HEATERS_PARALLEL)
    #error "EXTRUDERS must be 1 with HEATERS_PARALLEL."
  #endif

#elif ENABLED(SINGLENOZZLE)
  #error "SINGLENOZZLE requires 2 or more EXTRUDERS."
#endif

/**
 * Only one type of extruder allowed
 */
#if (ENABLED(SWITCHING_EXTRUDER) && (ENABLED(SINGLENOZZLE) || ENABLED(MIXING_EXTRUDER))) \
  || (ENABLED(SINGLENOZZLE) && ENABLED(MIXING_EXTRUDER))
    #error "Please define only one type of extruder: SINGLENOZZLE, SWITCHING_EXTRUDER, or MIXING_EXTRUDER."
#endif

/**
 * Single Stepper Dual Extruder with switching servo
 */
#if ENABLED(SWITCHING_EXTRUDER)
  #if ENABLED(DUAL_X_CARRIAGE)
    #error "SWITCHING_EXTRUDER and DUAL_X_CARRIAGE are incompatible."
  #elif EXTRUDERS != 2
    #error "SWITCHING_EXTRUDER requires exactly 2 EXTRUDERS."
  #elif NUM_SERVOS < 1
    #error "SWITCHING_EXTRUDER requires NUM_SERVOS >= 1."
  #endif
#endif

/**
 * Mixing Extruder requirements
 */
#if ENABLED(MIXING_EXTRUDER)
  #if EXTRUDERS > 1
    #error "MIXING_EXTRUDER currently only supports one extruder."
  #endif
  #if MIXING_STEPPERS < 2
    #error "You must set MIXING_STEPPERS >= 2 for a mixing extruder."
  #endif
  #if ENABLED(FILAMENT_SENSOR)
    #error "MIXING_EXTRUDER is incompatible with FILAMENT_SENSOR. Comment out this line to use it anyway."
  #endif
#endif

/**
 * Limited number of servos
 */
#if defined(NUM_SERVOS) && NUM_SERVOS > 0
  #if NUM_SERVOS > 4
    #error "The maximum number of SERVOS in Marlin is 4."
  #elif HAS_Z_SERVO_ENDSTOP && Z_ENDSTOP_SERVO_NR >= NUM_SERVOS
    #error "Z_ENDSTOP_SERVO_NR must be smaller than NUM_SERVOS."
  #endif
#endif

/**
 * Servo deactivation depends on servo endstops
 */
#if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE) && !HAS_Z_SERVO_ENDSTOP
  #error "Z_ENDSTOP_SERVO_NR is required for DEACTIVATE_SERVOS_AFTER_MOVE."
#endif

/**
 * Required LCD language
 */
#if DISABLED(DOGLCD) && ENABLED(ULTRA_LCD) && !defined(DISPLAY_CHARSET_HD44780)
  #error "You must set DISPLAY_CHARSET_HD44780 to JAPANESE, WESTERN or CYRILLIC for your LCD controller."
#endif

/**
 * Bed Heating Options - PID vs Limit Switching
 */
#if ENABLED(PIDTEMPBED) && ENABLED(BED_LIMIT_SWITCHING)
  #error "To use BED_LIMIT_SWITCHING you must disable PIDTEMPBED."
#endif

/**
 * Mesh Bed Leveling
 */
#if ENABLED(MESH_BED_LEVELING)
  #if ENABLED(DELTA)
    #error "MESH_BED_LEVELING does not yet support DELTA printers."
  #elif ENABLED(AUTO_BED_LEVELING_FEATURE)
    #error "Select AUTO_BED_LEVELING_FEATURE or MESH_BED_LEVELING, not both."
  #elif MESH_NUM_X_POINTS > 9 || MESH_NUM_Y_POINTS > 9
    #error "MESH_NUM_X_POINTS and MESH_NUM_Y_POINTS must be less than 10."
  #endif
#elif ENABLED(MANUAL_BED_LEVELING)
  #error "MESH_BED_LEVELING is required for MANUAL_BED_LEVELING."
#endif

/**
 * Probes
 */

#if PROBE_SELECTED

  #if ENABLED(Z_PROBE_SLED) && ENABLED(DELTA)
    #error "You cannot use Z_PROBE_SLED with DELTA."
  #endif

  /**
   * NUM_SERVOS is required for a Z servo probe
   */
  #if HAS_Z_SERVO_ENDSTOP
    #ifndef NUM_SERVOS
      #error "You must set NUM_SERVOS for a Z servo probe (Z_ENDSTOP_SERVO_NR)."
    #elif Z_ENDSTOP_SERVO_NR >= NUM_SERVOS
      #error "Z_ENDSTOP_SERVO_NR must be less than NUM_SERVOS."
    #endif
  #endif

  /**
   * A probe needs a pin
   */
  #if !PROBE_PIN_CONFIGURED
    #error "A probe needs a pin! Use Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN or Z_MIN_PROBE_PIN."
  #endif

  /**
   * Require a Z min pin
   */
  #if HAS_Z_MIN
     // Z_MIN_PIN and Z_MIN_PROBE_PIN can't co-exist when Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
    #if HAS_Z_MIN_PROBE_PIN && ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
      #error "A probe cannot have more than one pin! Use Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN or Z_MIN_PROBE_PIN."
    #endif
  #elif !HAS_Z_MIN_PROBE_PIN || (DISABLED(Z_MIN_PROBE_ENDSTOP) || ENABLED(DISABLE_Z_MIN_PROBE_ENDSTOP))
    // A pin was set for the Z probe, but not enabled.
    #error "A probe requires a Z_MIN or Z_PROBE pin. Z_MIN_PIN or Z_MIN_PROBE_PIN must point to a valid hardware pin."
  #endif

  /**
   * Make sure the plug is enabled if it's used
   */
  #if ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN) && DISABLED(USE_ZMIN_PLUG)
    #error "You must enable USE_ZMIN_PLUG if any probe or endstop is connected to the ZMIN plug."
  #endif

  /**
   * Only allow one probe option to be defined
   */
  #if (ENABLED(FIX_MOUNTED_PROBE) && (ENABLED(Z_PROBE_ALLEN_KEY) || HAS_Z_SERVO_ENDSTOP || ENABLED(Z_PROBE_SLED))) \
       || (ENABLED(Z_PROBE_ALLEN_KEY) && (HAS_Z_SERVO_ENDSTOP || ENABLED(Z_PROBE_SLED))) \
       || (HAS_Z_SERVO_ENDSTOP && ENABLED(Z_PROBE_SLED))
    #error "Please define only one type of probe: Z Servo, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, or FIX_MOUNTED_PROBE."
  #endif

  /**
   * Don't allow nonsense probe-pin settings
   */
  #if ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN) && ENABLED(Z_MIN_PROBE_ENDSTOP)
    #error "You can't enable both Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN and Z_MIN_PROBE_ENDSTOP."
  #elif ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN) && ENABLED(DISABLE_Z_MIN_PROBE_ENDSTOP)
    #error "Don't enable DISABLE_Z_MIN_PROBE_ENDSTOP with Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN."
  #elif ENABLED(DISABLE_Z_MIN_PROBE_ENDSTOP) && DISABLED(Z_MIN_PROBE_ENDSTOP)
    #error "DISABLE_Z_MIN_PROBE_ENDSTOP requires Z_MIN_PROBE_ENDSTOP to be set."
  #endif

  /**
   * Require a Z probe pin if Z_MIN_PROBE_ENDSTOP is enabled.
   */
  #if ENABLED(Z_MIN_PROBE_ENDSTOP)
    #if !HAS_Z_MIN_PROBE_PIN
      #error "Z_MIN_PROBE_ENDSTOP requires a Z_MIN_PROBE_PIN in your board's pins_XXXX.h file."
    #endif
    // Forcing Servo definitions can break some hall effect sensor setups. Leaving these here for further comment.
    //#ifndef NUM_SERVOS
    //  #error "You must have NUM_SERVOS defined and there must be at least 1 configured to use Z_MIN_PROBE_ENDSTOP."
    //#endif
    //#if defined(NUM_SERVOS) && NUM_SERVOS < 1
    //  #error "You must have at least 1 servo defined for NUM_SERVOS to use Z_MIN_PROBE_ENDSTOP."
    //#endif
    //#if Z_ENDSTOP_SERVO_NR < 0
    //  #error "You must have Z_ENDSTOP_SERVO_NR set to at least 0 or above to use Z_MIN_PROBE_ENDSTOP."
    //#endif
    //#ifndef Z_SERVO_ANGLES
    //  #error "You must have Z_SERVO_ANGLES defined for Z Extend and Retract to use Z_MIN_PROBE_ENDSTOP."
    //#endif
  #endif

  /**
   * Make sure Z raise values are set
   */
  #if !defined(Z_PROBE_DEPLOY_HEIGHT)
    #error "You must set Z_PROBE_DEPLOY_HEIGHT in your configuration."
  #elif !defined(Z_PROBE_TRAVEL_HEIGHT)
    #error "You must set Z_PROBE_TRAVEL_HEIGHT in your configuration."
  #elif Z_PROBE_DEPLOY_HEIGHT < 0
    #error "Probes need Z_PROBE_DEPLOY_HEIGHT >= 0."
  #elif Z_PROBE_TRAVEL_HEIGHT < 0
    #error "Probes need Z_PROBE_TRAVEL_HEIGHT >= 0."
  #endif

#else

  /**
   * Require some kind of probe for bed leveling and probe testing
   */
  #if ENABLED(AUTO_BED_LEVELING_FEATURE)
    #error "AUTO_BED_LEVELING_FEATURE requires a probe! Define a Z Servo, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, or FIX_MOUNTED_PROBE."
  #elif ENABLED(Z_MIN_PROBE_REPEATABILITY_TEST)
    #error "Z_MIN_PROBE_REPEATABILITY_TEST requires a probe! Define a Z Servo, Z_PROBE_ALLEN_KEY, Z_PROBE_SLED, or FIX_MOUNTED_PROBE."
  #endif

#endif

/**
 * Make sure Z_SAFE_HOMING point is reachable
 */
#if ENABLED(Z_SAFE_HOMING)
  #if Z_SAFE_HOMING_X_POINT < MIN_PROBE_X || Z_SAFE_HOMING_X_POINT > MAX_PROBE_X
    #if HAS_BED_PROBE
      #error "Z_SAFE_HOMING_X_POINT can't be reached by the Z probe."
    #else
      #error "Z_SAFE_HOMING_X_POINT can't be reached by the nozzle."
    #endif
  #elif Z_SAFE_HOMING_Y_POINT < MIN_PROBE_Y || Z_SAFE_HOMING_Y_POINT > MAX_PROBE_Y
    #if HAS_BED_PROBE
      #error "Z_SAFE_HOMING_Y_POINT can't be reached by the Z probe."
    #else
      #error "Z_SAFE_HOMING_Y_POINT can't be reached by the nozzle."
    #endif
  #endif
#endif // Z_SAFE_HOMING

/**
 * Auto Bed Leveling
 */
#if ENABLED(AUTO_BED_LEVELING_FEATURE)

  /**
   * Delta has limited bed leveling options
   */
  #if ENABLED(DELTA) && DISABLED(AUTO_BED_LEVELING_GRID)
    #error "You must use AUTO_BED_LEVELING_GRID for DELTA bed leveling."
  #endif

  /**
   * Check if Probe_Offset * Grid Points is greater than Probing Range
   */
  #if ENABLED(AUTO_BED_LEVELING_GRID)
    #ifndef DELTA_PROBEABLE_RADIUS
      // Be sure points are in the right order
      #if LEFT_PROBE_BED_POSITION > RIGHT_PROBE_BED_POSITION
        #error "LEFT_PROBE_BED_POSITION must be less than RIGHT_PROBE_BED_POSITION."
      #elif FRONT_PROBE_BED_POSITION > BACK_PROBE_BED_POSITION
        #error "FRONT_PROBE_BED_POSITION must be less than BACK_PROBE_BED_POSITION."
      #endif
      // Make sure probing points are reachable
      #if LEFT_PROBE_BED_POSITION < MIN_PROBE_X
        #error "The given LEFT_PROBE_BED_POSITION can't be reached by the Z probe."
      #elif RIGHT_PROBE_BED_POSITION > MAX_PROBE_X
        #error "The given RIGHT_PROBE_BED_POSITION can't be reached by the Z probe."
      #elif FRONT_PROBE_BED_POSITION < MIN_PROBE_Y
        #error "The given FRONT_PROBE_BED_POSITION can't be reached by the Z probe."
      #elif BACK_PROBE_BED_POSITION > MAX_PROBE_Y
        #error "The given BACK_PROBE_BED_POSITION can't be reached by the Z probe."
      #endif
    #endif
  #else // !AUTO_BED_LEVELING_GRID

    // Check the triangulation points
    #if ABL_PROBE_PT_1_X < MIN_PROBE_X || ABL_PROBE_PT_1_X > MAX_PROBE_X
      #error "The given ABL_PROBE_PT_1_X can't be reached by the Z probe."
    #elif ABL_PROBE_PT_2_X < MIN_PROBE_X || ABL_PROBE_PT_2_X > MAX_PROBE_X
      #error "The given ABL_PROBE_PT_2_X can't be reached by the Z probe."
    #elif ABL_PROBE_PT_3_X < MIN_PROBE_X || ABL_PROBE_PT_3_X > MAX_PROBE_X
      #error "The given ABL_PROBE_PT_3_X can't be reached by the Z probe."
    #elif ABL_PROBE_PT_1_Y < MIN_PROBE_Y || ABL_PROBE_PT_1_Y > MAX_PROBE_Y
      #error "The given ABL_PROBE_PT_1_Y can't be reached by the Z probe."
    #elif ABL_PROBE_PT_2_Y < MIN_PROBE_Y || ABL_PROBE_PT_2_Y > MAX_PROBE_Y
      #error "The given ABL_PROBE_PT_2_Y can't be reached by the Z probe."
    #elif ABL_PROBE_PT_3_Y < MIN_PROBE_Y || ABL_PROBE_PT_3_Y > MAX_PROBE_Y
      #error "The given ABL_PROBE_PT_3_Y can't be reached by the Z probe."
    #endif

  #endif // !AUTO_BED_LEVELING_GRID

#endif // AUTO_BED_LEVELING_FEATURE

/**
 * Advance Extrusion
 */
#if ENABLED(ADVANCE) && ENABLED(LIN_ADVANCE)
  #error "You can enable ADVANCE or LIN_ADVANCE, but not both."
#endif

/**
 * Filament Width Sensor
 */
#if ENABLED(FILAMENT_WIDTH_SENSOR) && !HAS_FILAMENT_WIDTH_SENSOR
  #error "FILAMENT_WIDTH_SENSOR requires a FILWIDTH_PIN to be defined."
#endif

/**
 * ULTIPANEL encoder
 */
#if ENABLED(ULTIPANEL) && DISABLED(NEWPANEL) && DISABLED(SR_LCD_2W_NL) && !defined(SHIFT_CLK)
  #error "ULTIPANEL requires some kind of encoder."
#endif

#if ENCODER_PULSES_PER_STEP < 0
  #error "ENCODER_PULSES_PER_STEP should not be negative, use REVERSE_MENU_DIRECTION instead."
#endif

/**
 * SAV_3DGLCD display options
 */
#if ENABLED(U8GLIB_SSD1306) && ENABLED(U8GLIB_SH1106)
  #error "Only enable one SAV_3DGLCD display type: U8GLIB_SSD1306 or U8GLIB_SH1106."
#endif

/**
 * Don't set more than one kinematic type
 */
#if (ENABLED(DELTA) && (ENABLED(SCARA) || ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ))) \
 || (ENABLED(SCARA) && (ENABLED(COREXY) || ENABLED(COREXZ) || ENABLED(COREYZ))) \
 || (ENABLED(COREXY) && (ENABLED(COREXZ) || ENABLED(COREYZ))) \
 || (ENABLED(COREXZ) && ENABLED(COREYZ))
  #error "Please enable only one of DELTA, SCARA, COREXY, COREXZ, or COREYZ."
#endif

/**
 * Allen Key
 * Deploying the Allen Key probe uses big moves in z direction. Too dangerous for an unhomed z-axis.
 */
#if ENABLED(Z_PROBE_ALLEN_KEY) && (Z_HOME_DIR < 0) && ENABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN)
  #error "You can't home to a z min endstop with a Z_PROBE_ALLEN_KEY"
#endif

/**
 * Dual X Carriage requirements
 */
#if ENABLED(DUAL_X_CARRIAGE)
  #if EXTRUDERS == 1
    #error "DUAL_X_CARRIAGE requires 2 (or more) extruders."
  #elif ENABLED(COREXY) || ENABLED(COREXZ)
    #error "DUAL_X_CARRIAGE cannot be used with COREXY or COREXZ."
  #elif !HAS_X2_ENABLE || !HAS_X2_STEP || !HAS_X2_DIR
    #error "DUAL_X_CARRIAGE requires X2 stepper pins to be defined."
  #elif !HAS_X_MAX
    #error "DUAL_X_CARRIAGE requires USE_XMAX_PLUG and an X Max Endstop."
  #elif !defined(X2_HOME_POS) || !defined(X2_MIN_POS) || !defined(X2_MAX_POS)
    #error "DUAL_X_CARRIAGE requires X2_HOME_POS, X2_MIN_POS, and X2_MAX_POS."
  #elif X_HOME_DIR != -1 || X2_HOME_DIR != 1
    #error "DUAL_X_CARRIAGE requires X_HOME_DIR -1 and X2_HOME_DIR 1."
  #endif
#endif // DUAL_X_CARRIAGE

/**
 * Make sure auto fan pins don't conflict with the fan pin
 */
#if HAS_AUTO_FAN
  #if HAS_FAN0
    #if EXTRUDER_0_AUTO_FAN_PIN == FAN_PIN
      #error "You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to FAN_PIN."
    #elif EXTRUDER_1_AUTO_FAN_PIN == FAN_PIN
      #error "You cannot set EXTRUDER_1_AUTO_FAN_PIN equal to FAN_PIN."
    #elif EXTRUDER_2_AUTO_FAN_PIN == FAN_PIN
      #error "You cannot set EXTRUDER_2_AUTO_FAN_PIN equal to FAN_PIN."
    #elif EXTRUDER_3_AUTO_FAN_PIN == FAN_PIN
      #error "You cannot set EXTRUDER_3_AUTO_FAN_PIN equal to FAN_PIN."
    #endif
  #endif
#endif

#if HAS_FAN0 && CONTROLLERFAN_PIN == FAN_PIN
  #error "You cannot set CONTROLLERFAN_PIN equal to FAN_PIN."
#endif

#if HAS_CONTROLLERFAN
  #if EXTRUDER_0_AUTO_FAN_PIN == CONTROLLERFAN_PIN
    #error "You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to CONTROLLERFAN_PIN."
  #elif EXTRUDER_1_AUTO_FAN_PIN == CONTROLLERFAN_PIN
    #error "You cannot set EXTRUDER_1_AUTO_FAN_PIN equal to CONTROLLERFAN_PIN."
  #elif EXTRUDER_2_AUTO_FAN_PIN == CONTROLLERFAN_PIN
    #error "You cannot set EXTRUDER_2_AUTO_FAN_PIN equal to CONTROLLERFAN_PIN."
  #elif EXTRUDER_3_AUTO_FAN_PIN == CONTROLLERFAN_PIN
    #error "You cannot set EXTRUDER_3_AUTO_FAN_PIN equal to CONTROLLERFAN_PIN."
  #endif
#endif

/**
 * Test Heater, Temp Sensor, and Extruder Pins; Sensor Type must also be set.
 */
#if !HAS_HEATER_0
  #error "HEATER_0_PIN not defined for this board."
#elif !PIN_EXISTS(TEMP_0)
  #error "TEMP_0_PIN not defined for this board."
#elif !PIN_EXISTS(E0_STEP) || !PIN_EXISTS(E0_DIR) || !PIN_EXISTS(E0_ENABLE)
  #error "E0_STEP_PIN, E0_DIR_PIN, or E0_ENABLE_PIN not defined for this board."
#elif TEMP_SENSOR_0 == 0
  #error "TEMP_SENSOR_0 is required."
#endif

#if HOTENDS > 1 || ENABLED(HEATERS_PARALLEL)
  #if !HAS_HEATER_1
    #error "HEATER_1_PIN not defined for this board."
  #endif
#endif

#if HOTENDS > 1
  #if TEMP_SENSOR_1 == 0
    #error "TEMP_SENSOR_1 is required with 2 or more HOTENDS."
  #elif !PIN_EXISTS(TEMP_1)
    #error "TEMP_1_PIN not defined for this board."
  #endif
  #if HOTENDS > 2
    #if TEMP_SENSOR_2 == 0
      #error "TEMP_SENSOR_2 is required with 3 or more HOTENDS."
    #elif !HAS_HEATER_2
      #error "HEATER_2_PIN not defined for this board."
    #elif !PIN_EXISTS(TEMP_2)
      #error "TEMP_2_PIN not defined for this board."
    #endif
    #if HOTENDS > 3
      #if TEMP_SENSOR_3 == 0
        #error "TEMP_SENSOR_3 is required with 4 HOTENDS."
      #elif !HAS_HEATER_3
        #error "HEATER_3_PIN not defined for this board."
      #elif !PIN_EXISTS(TEMP_3)
        #error "TEMP_3_PIN not defined for this board."
      #endif
    #elif TEMP_SENSOR_3 != 0
      #error "TEMP_SENSOR_3 shouldn't be set with only 3 extruders."
    #endif
  #elif TEMP_SENSOR_2 != 0
    #error "TEMP_SENSOR_2 shouldn't be set with only 2 extruders."
  #elif TEMP_SENSOR_3 != 0
    #error "TEMP_SENSOR_3 shouldn't be set with only 2 extruders."
  #endif
#elif TEMP_SENSOR_1 != 0 && DISABLED(TEMP_SENSOR_1_AS_REDUNDANT)
  #error "TEMP_SENSOR_1 shouldn't be set with only 1 extruder."
#elif TEMP_SENSOR_2 != 0
  #error "TEMP_SENSOR_2 shouldn't be set with only 1 extruder."
#elif TEMP_SENSOR_3 != 0
  #error "TEMP_SENSOR_3 shouldn't be set with only 1 extruder."
#endif

#if ENABLED(TEMP_SENSOR_1_AS_REDUNDANT) && TEMP_SENSOR_1 == 0
  #error "TEMP_SENSOR_1 is required with TEMP_SENSOR_1_AS_REDUNDANT."
#endif

/**
 * Basic 2-nozzle duplication mode
 */
#if ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
  #if HOTENDS != 2
    #error "DUAL_NOZZLE_DUPLICATION_MODE requires exactly 2 hotends."
  #elif ENABLED(DUAL_X_CARRIAGE)
    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with DUAL_X_CARRIAGE."
  #elif ENABLED(SINGLENOZZLE)
    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with SINGLENOZZLE."
  #elif ENABLED(MIXING_EXTRUDER)
    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with MIXING_EXTRUDER."
  #elif ENABLED(SWITCHING_EXTRUDER)
    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with SWITCHING_EXTRUDER."
  #endif
#endif

/**
 * Test Extruder Pins
 */
#if EXTRUDERS > 3
  #if !PIN_EXISTS(E3_STEP) || !PIN_EXISTS(E3_DIR) || !PIN_EXISTS(E3_ENABLE)
    #error "E3_STEP_PIN, E3_DIR_PIN, or E3_ENABLE_PIN not defined for this board."
  #endif
#elif EXTRUDERS > 2
  #if !PIN_EXISTS(E2_STEP) || !PIN_EXISTS(E2_DIR) || !PIN_EXISTS(E2_ENABLE)
    #error "E2_STEP_PIN, E2_DIR_PIN, or E2_ENABLE_PIN not defined for this board."
  #endif
#elif EXTRUDERS > 1
  #if !PIN_EXISTS(E1_STEP) || !PIN_EXISTS(E1_DIR) || !PIN_EXISTS(E1_ENABLE)
    #error "E1_STEP_PIN, E1_DIR_PIN, or E1_ENABLE_PIN not defined for this board."
  #endif
#endif

/**
 * Endstops
 */
#if DISABLED(USE_XMIN_PLUG) && DISABLED(USE_XMAX_PLUG) && !(ENABLED(Z_DUAL_ENDSTOPS) && Z2_USE_ENDSTOP >= _XMAX_ && Z2_USE_ENDSTOP <= _XMIN_)
 #error "You must enable USE_XMIN_PLUG or USE_XMAX_PLUG"
#elif DISABLED(USE_YMIN_PLUG) && DISABLED(USE_YMAX_PLUG) && !(ENABLED(Z_DUAL_ENDSTOPS) && Z2_USE_ENDSTOP >= _YMAX_ && Z2_USE_ENDSTOP <= _YMIN_)
 #error "You must enable USE_YMIN_PLUG or USE_YMAX_PLUG"
#elif DISABLED(USE_ZMIN_PLUG) && DISABLED(USE_ZMAX_PLUG) && !(ENABLED(Z_DUAL_ENDSTOPS) && Z2_USE_ENDSTOP >= _ZMAX_ && Z2_USE_ENDSTOP <= _ZMIN_)
 #error "You must enable USE_ZMIN_PLUG or USE_ZMAX_PLUG"
#elif ENABLED(Z_DUAL_ENDSTOPS) && !Z2_USE_ENDSTOP
 #error "You must set Z2_USE_ENDSTOP with Z_DUAL_ENDSTOPS"
#endif

/**
 * emergency-command parser
 */
#if ENABLED(EMERGENCY_PARSER) && ENABLED(USBCON)
  #error "EMERGENCY_PARSER does not work on boards with AT90USB processors (USBCON)."
#endif

 /**
 * Warnings for old configurations
 */
#if WATCH_TEMP_PERIOD > 500
  #error "WATCH_TEMP_PERIOD now uses seconds instead of milliseconds."
#elif DISABLED(THERMAL_PROTECTION_HOTENDS) && (defined(WATCH_TEMP_PERIOD) || defined(THERMAL_PROTECTION_PERIOD))
  #error "Thermal Runaway Protection for hotends is now enabled with THERMAL_PROTECTION_HOTENDS."
#elif DISABLED(THERMAL_PROTECTION_BED) && defined(THERMAL_PROTECTION_BED_PERIOD)
  #error "Thermal Runaway Protection for the bed is now enabled with THERMAL_PROTECTION_BED."
#elif ENABLED(COREXZ) && ENABLED(Z_LATE_ENABLE)
  #error "Z_LATE_ENABLE can't be used with COREXZ."
#elif defined(X_HOME_RETRACT_MM)
  #error "[XYZ]_HOME_RETRACT_MM settings have been renamed [XYZ]_HOME_BUMP_MM."
#elif defined(BEEPER)
  #error "BEEPER is now BEEPER_PIN. Please update your pins definitions."
#elif defined(SDCARDDETECT)
  #error "SDCARDDETECT is now SD_DETECT_PIN. Please update your pins definitions."
#elif defined(SDCARDDETECTINVERTED)
  #error "SDCARDDETECTINVERTED is now SD_DETECT_INVERTED. Please update your configuration."
#elif defined(BTENABLED)
  #error "BTENABLED is now BLUETOOTH. Please update your configuration."
#elif defined(CUSTOM_MENDEL_NAME)
  #error "CUSTOM_MENDEL_NAME is now CUSTOM_MACHINE_NAME. Please update your configuration."
#elif defined(HAS_AUTOMATIC_VERSIONING)
  #error "HAS_AUTOMATIC_VERSIONING is now USE_AUTOMATIC_VERSIONING. Please update your configuration."
#elif defined(ENABLE_AUTO_BED_LEVELING)
  #error "ENABLE_AUTO_BED_LEVELING is now AUTO_BED_LEVELING_FEATURE. Please update your configuration."
#elif defined(SDSLOW)
  #error "SDSLOW deprecated. Set SPI_SPEED to SPI_HALF_SPEED instead."
#elif defined(SDEXTRASLOW)
  #error "SDEXTRASLOW deprecated. Set SPI_SPEED to SPI_QUARTER_SPEED instead."
#elif defined(FILAMENT_SENSOR)
  #error "FILAMENT_SENSOR is deprecated. Use FILAMENT_WIDTH_SENSOR instead."
#elif defined(DISABLE_MAX_ENDSTOPS) || defined(DISABLE_MIN_ENDSTOPS)
  #error "DISABLE_MAX_ENDSTOPS and DISABLE_MIN_ENDSTOPS deprecated. Use individual USE_*_PLUG options instead."
#elif ENABLED(Z_DUAL_ENDSTOPS) && !defined(Z2_USE_ENDSTOP)
  #error "Z_DUAL_ENDSTOPS settings are simplified. Just set Z2_USE_ENDSTOP to the endstop you want to repurpose for Z2"
#elif defined(LANGUAGE_INCLUDE)
  #error "LANGUAGE_INCLUDE has been replaced by LCD_LANGUAGE. Please update your configuration."
#elif defined(EXTRUDER_OFFSET_X) || defined(EXTRUDER_OFFSET_Y)
  #error "EXTRUDER_OFFSET_[XY] is deprecated. Use HOTEND_OFFSET_[XY] instead."
#elif defined(PID_PARAMS_PER_EXTRUDER)
  #error "PID_PARAMS_PER_EXTRUDER is deprecated. Use PID_PARAMS_PER_HOTEND instead."
#elif defined(EXTRUDER_WATTS) || defined(BED_WATTS)
  #error "EXTRUDER_WATTS and BED_WATTS are deprecated. Remove them from your configuration."
#elif defined(SERVO_ENDSTOP_ANGLES)
  #error "SERVO_ENDSTOP_ANGLES is deprecated. Use Z_SERVO_ANGLES instead."
#elif defined(X_ENDSTOP_SERVO_NR) || defined(Y_ENDSTOP_SERVO_NR)
  #error "X_ENDSTOP_SERVO_NR and Y_ENDSTOP_SERVO_NR are deprecated and should be removed."
#elif defined(XY_TRAVEL_SPEED)
  #error "XY_TRAVEL_SPEED is deprecated. Use XY_PROBE_SPEED instead."
#elif defined(PROBE_SERVO_DEACTIVATION_DELAY)
  #error "PROBE_SERVO_DEACTIVATION_DELAY is deprecated. Use DEACTIVATE_SERVOS_AFTER_MOVE instead."
#elif defined(SERVO_DEACTIVATION_DELAY)
  #error "SERVO_DEACTIVATION_DELAY is deprecated. Use SERVO_DELAY instead."
#elif ENABLED(FILAMENTCHANGEENABLE)
  #error "FILAMENTCHANGEENABLE is now FILAMENT_CHANGE_FEATURE. Please update your configuration."
#elif defined(PLA_PREHEAT_HOTEND_TEMP)
  #error "PLA_PREHEAT_HOTEND_TEMP is now PREHEAT_1_TEMP_HOTEND. Please update your configuration."
#elif defined(PLA_PREHEAT_HPB_TEMP)
  #error "PLA_PREHEAT_HPB_TEMP is now PREHEAT_1_TEMP_BED. Please update your configuration."
#elif defined(PLA_PREHEAT_FAN_SPEED)
  #error "PLA_PREHEAT_FAN_SPEED is now PREHEAT_1_FAN_SPEED. Please update your configuration."
#elif defined(ABS_PREHEAT_HOTEND_TEMP)
  #error "ABS_PREHEAT_HOTEND_TEMP is now PREHEAT_2_TEMP_HOTEND. Please update your configuration."
#elif defined(ABS_PREHEAT_HPB_TEMP)
  #error "ABS_PREHEAT_HPB_TEMP is now PREHEAT_2_TEMP_BED. Please update your configuration."
#elif defined(ABS_PREHEAT_FAN_SPEED)
  #error "ABS_PREHEAT_FAN_SPEED is now PREHEAT_2_FAN_SPEED. Please update your configuration."
#elif defined(ENDSTOPS_ONLY_FOR_HOMING)
  #error "ENDSTOPS_ONLY_FOR_HOMING is deprecated. Use (disable) ENDSTOPS_ALWAYS_ON_DEFAULT instead."
#elif defined(HOMING_FEEDRATE)
  #error "HOMING_FEEDRATE is deprecated. Set individual rates with HOMING_FEEDRATE_(XY|Z|E) instead."
#elif defined(MANUAL_HOME_POSITIONS)
  #error "MANUAL_HOME_POSITIONS is deprecated. Set MANUAL_[XYZ]_HOME_POS as-needed instead."
#elif defined(PID_ADD_EXTRUSION_RATE)
  #error "PID_ADD_EXTRUSION_RATE is now PID_EXTRUSION_SCALING and is DISABLED by default. Are you sure you want to use this option? Please update your configuration."
#elif defined(Z_RAISE_BEFORE_HOMING)
  #error "Z_RAISE_BEFORE_HOMING is now Z_HOMING_HEIGHT. Please update your configuration."
#elif defined(MIN_Z_HEIGHT_FOR_HOMING)
  #error "MIN_Z_HEIGHT_FOR_HOMING is now Z_HOMING_HEIGHT. Please update your configuration."
#elif defined(Z_RAISE_BEFORE_PROBING) || defined(Z_RAISE_AFTER_PROBING)
  #error "Z_RAISE_(BEFORE|AFTER)_PROBING are deprecated. Use Z_PROBE_DEPLOY_HEIGHT instead."
#elif defined(Z_RAISE_PROBE_DEPLOY_STOW) || defined(Z_RAISE_BETWEEN_PROBINGS)
  #error "Z_RAISE_PROBE_DEPLOY_STOW and Z_RAISE_BETWEEN_PROBINGS are now Z_PROBE_DEPLOY_HEIGHT and Z_PROBE_TRAVEL_HEIGHT Please update your configuration."
#endif