extruder/config.h

#ifndef _CONFIG_H
#define _CONFIG_H

#include  "arduino.h"

// controller index- bus is multidrop after all
#define THIS_CONTROLLER_NUM 0

//RS485 Interface pins
#define RX_ENABLE_PIN DIO4
#define TX_ENABLE_PIN AIO2

// Control pins for the A3949 chips
#define H1D DIO7
#define H1E DIO5
#define H2D DIO8
#define H2E DIO6

// PWM versions of the enable_pins
#define H1E_PWM OCR0B
#define H2E_PWM OCR0A

//Step/Dir Pins from motherboard to extruder 
//IMPORTANT: Assumes that the step pin is on PCIE0
#define E_STEP_PIN DIO10
#define E_DIR_PIN DIO9

//Trimpot is on AIO0, pin 23
#define TRIM_POT AIO0
#define TRIM_POT_CHANNEL 0

//Read analog voltage from thermistor
#define TEMP_PIN AIO3
#define TEMP_PIN_CHANNEL 3

//Read analog voltage from thermistor
#define TEMP_BED_PIN AIO6
#define TEMP_BED_PIN_CHANNEL 6


#define REFERENCE REFERENCE_AVCC

#define ANALOG_MASK (MASK(TRIM_POT_CHANNEL) | MASK(TEMP_PIN_CHANNEL) | MASK(TEMP_BED_PIN_CHANNEL))

#define TEMP_THERMISTOR

#define HEATER_PIN  DIO11
#define BED_PIN   AIO1
#define FAN_PIN   DIO12

// extruder settings
#define TEMP_HYSTERESIS       20
#define TEMP_RESIDENCY_TIME   60

#ifdef  DEFINE_TEMP_SENSOR
DEFINE_TEMP_SENSOR(extruder,  TT_THERMISTOR,    TEMP_PIN_CHANNEL)
DEFINE_TEMP_SENSOR(bed,     TT_THERMISTOR,    TEMP_BED_PIN_CHANNEL)
#endif

#ifdef  DEFINE_HEATER
DEFINE_HEATER(extruder, PORTD, HEATER_PIN, OCR0A)
DEFINE_HEATER(bed,      PORTD, BED_PIN, OCR0B)
#endif

// 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 TH_COUNT          8
#define PID_SCALE         1024L


/*
  Motors
*/

#define enable_motors()       do { TCCR0A |= MASK(COM0A1) | MASK(COM0B1); } while (0)
#define disable_motors()      do { TCCR0A &= ~MASK(COM0A1) & ~MASK(COM0B1); } while (0)

#endif  /* _CONFIG_H */