simulator.h

#ifdef SIMULATOR

#undef X_STEP_PIN
#undef X_DIR_PIN
#undef X_MIN_PIN
#undef X_ENABLE_PIN
#undef Y_STEP_PIN
#undef Y_DIR_PIN
#undef Y_MIN_PIN
#undef Y_ENABLE_PIN
#undef Z_STEP_PIN
#undef Z_DIR_PIN
#undef Z_MIN_PIN
#undef Z_ENABLE_PIN
#undef E_STEP_PIN
#undef E_DIR_PIN
#undef E_ENABLE_PIN
#undef STEPPER_ENABLE_PIN

#undef PS_MOSFET_PIN
#undef PS_ON_PIN
#undef RX_ENABLE_PIN
#undef TX_ENABLE_PIN
#undef X_MAX_PIN
#undef Y_MAX_PIN
#undef Z_MAX_PIN

#undef READ
#undef WRITE
#undef TOGGLE
#undef SET_INPUT
#undef SET_OUTPUT
#undef GET_INPUT
#undef GET_OUTPUT

// Compiler appeasement
#undef disable_transmit
#undef enable_transmit
#define disable_transmit()
#define enable_transmit()
#undef USB_SERIAL

#undef BSS
#ifdef __MACH__  // Mac OS X
  #define BSS __attribute__ ((__section__ ("__DATA,.bss")))
#else
  #define BSS __attribute__ ((__section__ (".bss")))
#endif

#ifndef _SIMULATOR_H
#define _SIMULATOR_H

#include <stdint.h>
#include <stdbool.h>
#include "simulator/data_recorder.h"

#define PROGMEM
#define PGM_P const char *
#define PSTR(x) (x)
#define pgm_read_byte(x) (*((uint8_t *)(x)))
#define pgm_read_word(x) (*((uint16_t *)(x)))

#define MASK(PIN)   (1 << PIN)
#define ACD         7
#define OCIE1A      1

// TODO: Implement simulated EEMEM persistence
#define EEMEM
#define eeprom_read_dword(ptr32) (*(ptr32))
#define eeprom_read_word(ptr16) (*(ptr16))
#define eeprom_write_dword(ptr32, i32) (*(ptr32)=i32)
#define eeprom_write_word(ptr16, i16) (*(ptr16)=i16)

typedef enum {
  // Define pins used
  X_STEP_PIN,
  X_DIR_PIN,
  X_MIN_PIN,
  X_ENABLE_PIN,
  Y_STEP_PIN,
  Y_DIR_PIN,
  Y_MIN_PIN,
  Y_ENABLE_PIN,
  Z_STEP_PIN,
  Z_DIR_PIN,
  Z_MIN_PIN,
  Z_ENABLE_PIN,
  E_STEP_PIN,
  E_DIR_PIN,
  E_ENABLE_PIN,

  STEPPER_ENABLE_PIN,

  SCK,
  MOSI,
  MISO,
  SS,

  RX_ENABLE_PIN,
  TX_ENABLE_PIN,
/*
 * Not used in the simulator.  Add them to this list to enable them if needed.
  PS_MOSFET_PIN,
  PS_ON_PIN,
  X_MAX_PIN,
  Y_MAX_PIN,
  Z_MAX_PIN,
*/
  PIN_NB  /* End of PINS marker; Put all new pins before this one */
} pin_t;

// AVR stand-ins
typedef enum {
  WGM00 = 0,
  WGM01,
  WGM20,
  WGM21,
  CS00 = 0,
  CS02,
  CS20,
  CS21,
  CS22,
} masks_t;

#undef TEMP_PIN_CHANNEL
#define TEMP_PIN_CHANNEL 0

extern uint8_t ACSR;
extern uint8_t TIMSK1;
extern volatile bool sim_interrupts;

bool READ(pin_t pin);
void WRITE(pin_t pin, bool on);
void SET_OUTPUT(pin_t pin);
void SET_INPUT(pin_t pin);

// Simulate AVR interrupts.
#define ISR(fn) void fn (void)
void TIMER1_COMPA_vect(void);
void TIMER1_COMPB_vect(void);

// Compare-timers for next interrupts.
extern uint16_t OCR1A, OCR1B;

// Interrupt control registers.
extern uint16_t TCCR1A, TCCR1B;
enum { CS10 = 1 , OCIE1B = 3 };

#define TCNT1 (sim_tick_counter())
void cli(void);
void sei(void);

#ifdef USE_WATCHDOG
#define wd_init()
#define wd_reset()
#endif

void sim_start(int argc, char ** argv);
void sim_info(const char fmt[], ...);
void sim_debug(const char fmt[], ...);
void sim_error(const char msg[]);
void sim_assert(bool cond, const char msg[]);
void sim_gcode_ch(char ch);
void sim_gcode(const char msg[]);

/**
 * Initialize simulator timer and set time scale.
 *
 * @param scale time slow-down factor; 0=warp-speed, 1=real-time, 2-half-time, etc.
 */
void sim_timer_init(uint8_t scale);

void sim_timer_stop(void);
void sim_setTimer(void);
uint16_t sim_tick_counter(void);
uint64_t sim_runtime_ns(void); ///< Simulated run-time in nanoseconds
void sim_time_warp(void); ///< skip ahead to next timer interrupt, when time_scale==0

#define DIO0_PIN "proof of life"

#endif /* _SIMULATOR_H */
#endif /* SIMULATOR */