// Define this to set a custom name for your generic Mendel,
#define CUSTOM_MENDEL_NAME "Scara"

// SCARA-mode for Marlin has been developed by QHARLEY in ZA in 2012/2013. Implemented
// and slightly reworked by JCERNY in 06/2014 with the goal to bring it into Master-Branch
// QHARLEYS Autobedlevelling has not been ported, because Marlin has now Bed-levelling
// You might need Z-Min endstop on SCARA-Printer to use this feature. Actually untested!
// Uncomment to use Morgan scara mode
#define scara_segments_per_second 200 //careful, two much will decrease performance...
// Length of inner support arm
#define Linkage_1 150 //mm      Preprocessor cannot handle decimal point...
// Length of outer support arm     Measure arm lengths precisely and enter 
#define Linkage_2 150 //mm    

// SCARA tower offset (position of Tower relative to bed zero position) 
// This needs to be reasonably accurate as it defines the printbed position in the SCARA space.
#define SCARA_offset_x 100 //mm   
#define SCARA_offset_y -56 //mm
#define SCARA_RAD2DEG 57.2957795  // to convert RAD to degrees

#define THETA_HOMING_OFFSET 0	//calculatated from Calibration Guide and command M360 / M114 see picture in http://reprap.harleystudio.co.za/?page_id=1073
#define PSI_HOMING_OFFSET 0  // calculatated from Calibration Guide and command M364 / M114 see picture in http://reprap.harleystudio.co.za/?page_id=1073

//some helper variables to make kinematics faster
#define L1_2 sq(Linkage_1) // do not change
#define L2_2 sq(Linkage_2) // do not change


//===========================================================================
//=============================Mechanical Settings===========================
//===========================================================================

// coarse Endstop Settings
//#define ENDSTOPPULLUPS // Comment this out (using // at the start of the line) to disable the endstop pullup resistors

#ifndef ENDSTOPPULLUPS
// fine endstop settings: Individual pullups. will be ignored if ENDSTOPPULLUPS is defined
// #define ENDSTOPPULLUP_XMAX
// #define ENDSTOPPULLUP_YMAX
#define ENDSTOPPULLUP_ZMAX  // open pin, inverted
#define ENDSTOPPULLUP_XMIN  // open pin, inverted
#define ENDSTOPPULLUP_YMIN  // open pin, inverted
// #define ENDSTOPPULLUP_ZMIN
#endif

#ifdef ENDSTOPPULLUPS
#define ENDSTOPPULLUP_XMAX
#define ENDSTOPPULLUP_YMAX
#define ENDSTOPPULLUP_ZMAX
#define ENDSTOPPULLUP_XMIN
#define ENDSTOPPULLUP_YMIN
#define ENDSTOPPULLUP_ZMIN
#define ENDSTOPPULLUP_EMIN
#endif

// The pullups are needed if you directly connect a mechanical endswitch between the signal and ground pins.
const bool X_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Y_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Z_MIN_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool E_MIN_ENDSTOP_INVERTING = false;// set to true to invert the logic of the endstop.
const bool X_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Y_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of the endstop.
//#define DISABLE_MAX_ENDSTOPS
//#define DISABLE_MIN_ENDSTOPS

// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
#define X_ENABLE_ON 0
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 0
#define E_ENABLE_ON 0      // For all extruders

// Disables axis when it's not being used.
#define DISABLE_X false
#define DISABLE_Y false
#define DISABLE_Z false
#define DISABLE_E false      // For all extruders
#define DISABLE_INACTIVE_EXTRUDER false //disable only inactive extruders and keep active extruder enabled

#define INVERT_X_DIR false    // for Mendel set to false, for Orca set to true
#define INVERT_Y_DIR false    // for Mendel set to true, for Orca set to false
#define INVERT_Z_DIR true     // for Mendel set to false, for Orca set to true
#define INVERT_E0_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E1_DIR false    // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E2_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false

// ENDSTOP SETTINGS:
// Sets direction of endstops when homing; 1=MAX, -1=MIN
#define X_HOME_DIR 1
#define Y_HOME_DIR 1
#define Z_HOME_DIR -1
#define E_HOME_DIR -1

#define min_software_endstops true // If true, axis won't move to coordinates less than HOME_POS.
#define max_software_endstops true  // If true, axis won't move to coordinates greater than the defined lengths below.

// Travel limits after homing
#define X_MAX_POS 200
#define X_MIN_POS 0
#define Y_MAX_POS 200
#define Y_MIN_POS 0
#define Z_MAX_POS 225
#define Z_MIN_POS MANUAL_Z_HOME_POS
#define E_MIN_POS 0

#define X_MAX_LENGTH (X_MAX_POS - X_MIN_POS)
#define Y_MAX_LENGTH (Y_MAX_POS - Y_MIN_POS)
#define Z_MAX_LENGTH (Z_MAX_POS - Z_MIN_POS)


//============================= Bed Auto Leveling ===========================

//#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (ABL)
//#define Z_PROBE_REPEATABILITY_TEST  // Delete the comment to enable

// set the rectangle in which to probe in manual or automatic
#define LEFT_PROBE_BED_POSITION 20
#define RIGHT_PROBE_BED_POSITION 180
#define BACK_PROBE_BED_POSITION 180
#define FRONT_PROBE_BED_POSITION 20

#define XY_TRAVEL_SPEED 8000     // X and Y axis travel speed between probes, in mm/min

#ifdef ENABLE_AUTO_BED_LEVELING

// There are 2 different ways to pick the X and Y locations to probe:

//  - "grid" mode
//    Probe every point in a rectangular grid
//    You must specify the rectangle, and the density of sample points
//    This mode is preferred because there are more measurements.
//    It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive

//  - "3-point" mode
//    Probe 3 arbitrary points on the bed (that aren't colinear)
//    You must specify the X & Y coordinates of all 3 points

#define AUTO_BED_LEVELING_GRID
// with AUTO_BED_LEVELING_GRID, the bed is sampled in a
// AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
// and least squares solution is calculated
// Note: this feature occupies 10'206 byte
#ifdef AUTO_BED_LEVELING_GRID
// set the number of grid points per dimension
// I wouldn't see a reason to go above 3 (=9 probing points on the bed)
#define AUTO_BED_LEVELING_GRID_POINTS 2

#else  // not AUTO_BED_LEVELING_GRID
// with no grid, just probe 3 arbitrary points.  A simple cross-product
// is used to esimate the plane of the print bed

#define ABL_PROBE_PT_1_X 15
#define ABL_PROBE_PT_1_Y 180
#define ABL_PROBE_PT_2_X 15
#define ABL_PROBE_PT_2_Y 20
#define ABL_PROBE_PT_3_X 170
#define ABL_PROBE_PT_3_Y 20

#endif // AUTO_BED_LEVELING_GRID


// these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
#define X_PROBE_OFFSET_FROM_EXTRUDER 0
#define Y_PROBE_OFFSET_FROM_EXTRUDER 20
#define Z_PROBE_OFFSET_FROM_EXTRUDER -3.75

#define Z_RAISE_BEFORE_HOMING 10      // (in mm) Raise Z before homing (G28) for Probe Clearance.
// Be sure you have this distance over your Z_MAX_POS in case

#define Z_RAISE_BEFORE_PROBING 10    //How much the extruder will be raised before traveling to the first probing point.
#define Z_RAISE_BETWEEN_PROBINGS 5   //How much the extruder will be raised when traveling from between next probing points

//#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
//#define SLED_DOCKING_OFFSET 5 // the extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.

//If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
//The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
// You MUST HAVE the SERVO ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.

#define PROBE_SERVO_DEACTIVATION_DELAY 300


//If you have enabled the Auto Bed Leveling and are using the same Z Probe for Z Homing,
//it is highly recommended you let this Z_SAFE_HOMING enabled!!!

#define Z_SAFE_HOMING   // This feature is meant to avoid Z homing with probe outside the bed area.
                        // When defined, it will:
                        // - Allow Z homing only after X and Y homing AND stepper drivers still enabled
                        // - If stepper drivers timeout, it will need X and Y homing again before Z homing
                        // - Position the probe in a defined XY point before Z Homing when homing all axis (G28)
                        // - Block Z homing only when the probe is outside bed area.

#ifdef Z_SAFE_HOMING

#define Z_SAFE_HOMING_X_POINT (X_MAX_LENGTH/2)    // X point for Z homing when homing all axis (G28)
#define Z_SAFE_HOMING_Y_POINT (Y_MAX_LENGTH/2)    // Y point for Z homing when homing all axis (G28)

#endif

#endif // ENABLE_AUTO_BED_LEVELING


// The position of the homing switches
//#define MANUAL_HOME_POSITIONS  // If defined, MANUAL_*_HOME_POS below will be used
//#define BED_CENTER_AT_0_0  // If defined, the center of the bed is at (X=0, Y=0)

//Manual homing switch locations:
// For deltabots this means top and center of the Cartesian print volume.
// For SCARA: Offset between HomingPosition and Bed X=0 / Y=0
#define MANUAL_X_HOME_POS -22.
#define MANUAL_Y_HOME_POS -52.
#define MANUAL_Z_HOME_POS 0.1  // Distance between nozzle and print surface after homing.


//// MOVEMENT SETTINGS
#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
#define HOMING_FEEDRATE {40*60, 40*60, 10*60, 0}  // set the homing speeds (mm/min)

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT     {103.69,103.69,200/1.25,1000,1000,1000,1000}    // X, Y, Z, E0, E1, E2, E3
#define DEFAULT_MAX_FEEDRATE            {300,300,4,45,45,45,45}                         // X, Y, Z, E0, E1, E2, E3 (mm/sec)
#define DEFAULT_RETRACTION_MAX_FEEDRATE {80,80,80,80}                                   // E0, E1, E2, E3 (mm/sec)
#define DEFAULT_MAX_ACCELERATION        {5000,5000,50,5000,5000,5000,5000}     // X, Y, Z, E0, E1, E2, E3 maximum start speed for accelerated moves.

#define DEFAULT_ACCELERATION          400    // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION  2000  // X, Y, Z and E max acceleration in mm/s^2 for retracts

// Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
// The offset has to be X=0, Y=0 for extruder 0 hotend (default extruder).
// For the other hotends it is their distance from the extruder 0 hotend.
// #define EXTRUDER_OFFSET_X {0.0, 20.00} // (in mm) for each extruder, offset of the hotend on the X axis
// #define EXTRUDER_OFFSET_Y {0.0, 5.00}  // (in mm) for each extruder, offset of the hotend on the Y axis

// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
#define DEFAULT_XYJERK                5    // (mm/sec)
#define DEFAULT_ZJERK                 0.4    // (mm/sec)
#define DEFAULT_EJERK                 3    // (mm/sec)

//===========================================================================
//=============================Additional Features===========================
//===========================================================================

// Custom M code points
//#define CUSTOM_M_CODES
#ifdef CUSTOM_M_CODES
#define CUSTOM_M_CODE_SET_Z_PROBE_OFFSET 851
#define Z_PROBE_OFFSET_RANGE_MIN -15
#define Z_PROBE_OFFSET_RANGE_MAX -5
#endif
