#ifndef	_PINOUT_H
#define	_PINOUT_H

#include	"arduino.h"

/*
	Machine Pin Definitions
*/

/*
	RESERVED pins
	we NEED these for communication
*/

#define	RESERVED_RXD					DIO0
#define	RESERVED_TXD					DIO1
#define	RESERVED_SCK					DIO13
#define	RESERVED_MISO					DIO12
#define	RESERVED_MOSI					DIO11
#define	RESERVED_SS						DIO10

/*
	user defined pins
	adjust to suit your electronics,
	or adjust your electronics to suit this
*/

#define	X_STEP_PIN						AIO0
#define	X_DIR_PIN							AIO1
#define	X_MIN_PIN							AIO2

#define	Y_STEP_PIN						AIO3
#define	Y_DIR_PIN							AIO4
#define	Y_MIN_PIN							AIO5

#define	Z_STEP_PIN						DIO2
#define	Z_DIR_PIN							DIO3
#define	Z_MIN_PIN							DIO4

#define	E_STEP_PIN						DIO7
#define	E_DIR_PIN							DIO8

#define	STEPPER_ENABLE_PIN		DIO9

// list of PWM-able pins and corresponding timers
// timer1 is used for step timing so don't use OC1A/OC1B (DIO9/DIO10)
// OC0A												DIO6
// OC0B												DIO5
// OC1A												DIO9
// OC1B												DIO10
// OC2A												DIO11
// OC2B												DIO3

#define	HEATER_PIN						DIO6
#define	HEATER_PWM						OCR0A

#define	FAN_PIN								DIO5
#define	FAN_PWM								OCR0B

/*
	X Stepper
*/

#define	_x_step(st)						WRITE(X_STEP_PIN, st)
#define	x_step()							_x_step(1);
#define	x_direction(dir)			WRITE(X_DIR_PIN, dir)
#define	x_min()								READ(X_MIN_PIN)
#ifdef	X_MAX_PIN
	#define	x_max()							READ(X_MAX_PIN)
#else
	#define	x_max()							(0)
#endif

/*
	Y Stepper
*/

#define	_y_step(st)						WRITE(Y_STEP_PIN, st)
#define	y_step()							_y_step(1);
#define	y_direction(dir)			WRITE(Y_DIR_PIN, dir)
#define	y_min()								READ(Y_MIN_PIN)
#ifdef	Y_MAX_PIN
	#define	y_max()							READ(Y_MAX_PIN)
#else
	#define	y_max()							(0)
#endif

/*
	Z Stepper
*/

#define	_z_step(st)						WRITE(Z_STEP_PIN, st)
#define	z_step()							_z_step(1);
#define	z_direction(dir)			WRITE(Z_DIR_PIN, dir)
#define	z_min()								READ(Z_MIN_PIN)
#ifdef	Z_MAX_PIN
	#define	z_max()							READ(Z_MAX_PIN)
#else
	#define	z_max()							(0)
#endif

/*
	Extruder
*/

#define	_e_step(st)						WRITE(E_STEP_PIN, st)
#define	e_step()							_e_step(1);
#define	e_direction(dir)			WRITE(E_DIR_PIN, dir)

/*
	Heater
*/

#ifdef	HEATER_PWM
	#define	enable_heater()			do { TCCR0A |=  MASK(COM0A1); } while (0)
	#define	disable_heater()		do { TCCR0A &= ~MASK(COM0A1); } while (0)
#else
	#define	enable_heater()			WRITE(HEATER_PIN, 1)
	#define	disable_heater()		WRITE(HEATER_PIN, 0)
#endif

/*
	fan
*/

#ifdef	FAN_PIN
	#ifdef	FAN_PWM
		#define	enable_fan()				do { TCCR0A |=  MASK(COM0B1); } while (0)
		#define	disable_fan()				do { TCCR0A &= ~MASK(COM0B1); } while (0)
	#else
		#define	enable_fan()				WRITE(FAN_PIN, 1)
		#define	disable_fan()				WRITE(FAN_PIN, 0);
	#endif
#else
	#define	enable_fan()				if (0) {}
	#define	disable_fan()				if (0) {}
#endif

/*
	Stepper Enable (ATX PSU pwr_good signal?)
*/

#ifdef	STEPPER_ENABLE_PIN
	// for connection to stepper driver ENABLE pins (negative asserted)
// 	#define	power_on()		WRITE(STEPPER_ENABLE_PIN, 0)
// 	#define	power_off()	WRITE(STEPPER_ENABLE_PIN, 1)
	// for connection to ATX PSU PWR_ON signal
	#define	power_on()					do { WRITE(STEPPER_ENABLE_PIN, 0); SET_OUTPUT(STEPPER_ENABLE_PIN); } while (0)
	#define	power_off()					SET_INPUT(STEPPER_ENABLE_PIN)
#else
	#define	power_on()					if (0) {}
	#define	power_off()					if (0) {}
#endif

/*
	End Step - All Steppers
	(so we don't have to delay in interrupt context)
*/

#define unstep() 							do { _x_step(0); _y_step(0); _z_step(0); _e_step(0); } while (0)

#endif	/* _PINOUT_H */