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The pins for CNC Shield v4 which has direction and steps interchanged #674

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The pins for CNC Shield v4 which has direction and steps interchanged #674

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31 changes: 23 additions & 8 deletions grbl/cpu_map.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,27 +26,42 @@
#ifndef cpu_map_h
#define cpu_map_h


#ifdef CPU_MAP_ATMEGA328P // (Arduino Uno) Officially supported by Grbl.

// Define serial port pins and interrupt vectors.
// Uncomment to use a CNC SHIELD v4, the one for arduino nano
// #define CNC_SHIELD_V4

// Define serial port pins and interrupt vectors.
#define SERIAL_RX USART_RX_vect
#define SERIAL_UDRE USART_UDRE_vect

// 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 2 // Uno Digital Pin 2
#define Y_STEP_BIT 3 // Uno Digital Pin 3
#define Z_STEP_BIT 4 // Uno Digital Pin 4
#ifndef CNC_SHIELD_V4 // has traces for step and direction interchanged
#define X_STEP_BIT 2 // Uno Digital Pin 2
#define Y_STEP_BIT 3 // Uno Digital Pin 3
#define Z_STEP_BIT 4 // Uno Digital Pin 4
#else
#define X_STEP_BIT 5 // nano Digital Pin 5
#define Y_STEP_BIT 6 // nano Digital Pin 6
#define Z_STEP_BIT 7 // nano Digital Pin 7
#endif
#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 5 // Uno Digital Pin 5
#define Y_DIRECTION_BIT 6 // Uno Digital Pin 6
#define Z_DIRECTION_BIT 7 // Uno Digital Pin 7

#ifndef CNC_SHIELD_V4 // has traces for step and direction interchanged
#define X_DIRECTION_BIT 5 // Uno Digital Pin 5
#define Y_DIRECTION_BIT 6 // Uno Digital Pin 6
#define Z_DIRECTION_BIT 7 // Uno Digital Pin 7
#else
#define X_DIRECTION_BIT 2 // nano Digital Pin 2
#define Y_DIRECTION_BIT 3 // nano Digital Pin 3
#define Z_DIRECTION_BIT 4 // nano Digital Pin 4
#endif
#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.
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