#ifndef _STEPPER_H_
#define _STEPPER_H_
#include <stdint.h>
/* pin bitmasks */
#define STEPPER_A 2
#define STEPPER_C 8
#define STEPPER_D 32
#define STEPPER_B 128
#define STEPPER_MASK (STEPPER_A | STEPPER_B | STEPPER_C | STEPPER_D)
extern volatile unsigned int stepper_steps;
extern uint8_t stepper_speed;
extern bool stepper_direction;
void stepper(void);
#endif