Changing step motor driving pins

[vshamsiv]

Hi, thank you for your perfect project. As making the PCB is hard and in the meantime CNC shied available; is it possible to modify your code as below the we can use that shield :
(I copied this from grbl library in cpu_map.h).
// Define step pulse output pins. NOTE: All step bit pins must be on the same port.
#define STEP_DDR DDRD
#define STEP_PORT PORTD
#define X_STEP_BIT 3 // Uno Digital Pin 2
#define Y_STEP_BIT 5 // Uno Digital Pin 3
#define Z_STEP_BIT 7 // Uno Digital Pin 4
#define STEP_MASK ((1<<X_STEP_BIT)|(1<<Y_STEP_BIT)|(1<<Z_STEP_BIT)) // All step bits

// Define step direction output pins. NOTE: All direction pins must be on the same port.
#define DIRECTION_DDR DDRD
#define DIRECTION_PORT PORTD
#define X_DIRECTION_BIT 2 // Uno Digital Pin 5
#define Y_DIRECTION_BIT 4 // Uno Digital Pin 6
#define Z_DIRECTION_BIT 6 // Uno Digital Pin 7
#define DIRECTION_MASK ((1<<X_DIRECTION_BIT)|(1<<Y_DIRECTION_BIT)|(1<<Z_DIRECTION_BIT)) // All direction bits

// Define stepper driver enable/disable output pin.
#define STEPPERS_DISABLE_DDR DDRB
#define STEPPERS_DISABLE_PORT PORTB
#define STEPPERS_DISABLE_BIT 8 // no Digital Pin 8
#define STEPPERS_DISABLE_MASK (1<<STEPPERS_DISABLE_BIT)