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// Enable this for dual x-carriage printers.
// A dual x-carriage design has the advantage that the inactive extruder can be parked which
// prevents hot-end ooze contaminating the print. It also reduces the weight of each x-carriage
// allowing faster printing speeds.
//#define DUAL_X_CARRIAGE
#ifdef DUAL_X_CARRIAGE
// Configuration for second X-carriage
// Note: the first x-carriage is defined as the x-carriage which homes to the minimum endstop;
// the second x-carriage always homes to the maximum endstop.
#define X2_MIN_POS 80     // set minimum to ensure second x-carriage doesn't hit the parked first X-carriage
#define X2_MAX_POS 353    // set maximum to the distance between toolheads when both heads are homed
#define X2_HOME_DIR 1     // the second X-carriage always homes to the maximum endstop position
#define X2_HOME_POS X2_MAX_POS // default home position is the maximum carriage position
    // However: In this mode the EXTRUDER_OFFSET_X value for the second extruder provides a software
    // override for X2_HOME_POS. This also allow recalibration of the distance between the two endstops
    // without modifying the firmware (through the "M218 T1 X???" command).
    // Remember: you should set the second extruder x-offset to 0 in your slicer.

// Pins for second x-carriage stepper driver (defined here to avoid further complicating pins.h)
#define X2_ENABLE_PIN 29
#define X2_STEP_PIN 25
#define X2_DIR_PIN 23

// There are a few selectable movement modes for dual x-carriages using M605 S<mode>
//    Mode 0: Full control. The slicer has full control over both x-carriages and can achieve optimal travel results
//                           as long as it supports dual x-carriages. (M605 S0)
//    Mode 1: Auto-park mode. The firmware will automatically park and unpark the x-carriages on tool changes so
//                           that additional slicer support is not required. (M605 S1)
//    Mode 2: Duplication mode. The firmware will transparently make the second x-carriage and extruder copy all
//                           actions of the first x-carriage. This allows the printer to print 2 arbitrary items at
//                           once. (2nd extruder x offset and temp offset are set using: M605 S2 [Xnnn] [Rmmm])

// This is the default power-up mode which can be later using M605.
#define DEFAULT_DUAL_X_CARRIAGE_MODE 0

// As the x-carriages are independent we can now account for any relative Z offset
#define EXTRUDER1_Z_OFFSET 0.0           // z offset relative to extruder 0

// Default settings in "Auto-park Mode"
#define TOOLCHANGE_PARK_ZLIFT   0.2      // the distance to raise Z axis when parking an extruder
#define TOOLCHANGE_UNPARK_ZLIFT 1        // the distance to raise Z axis when unparking an extruder

// Default x offset in duplication mode (typically set to half print bed width)
#define DEFAULT_DUPLICATION_X_OFFSET 100

#endif //DUAL_X_CARRIAGE