speeduino/speeduino/board_avr2560.h

#ifndef AVR2560_H
#define AVR2560_H
#if defined(CORE_AVR)

#include <avr/interrupt.h>
#include <avr/io.h>

/*
***********************************************************************************************************
* General
*/
  #define PORT_TYPE uint8_t //Size of the port variables (Eg inj1_pin_port).
  #define PINMASK_TYPE uint8_t
  #define COMPARE_TYPE uint16_t
  #define COUNTER_TYPE uint16_t
  #define SERIAL_BUFFER_SIZE 257 //Size of the serial buffer used by new comms protocol. Additional 1 byte is for flag
  #ifdef USE_SPI_EEPROM
    #define EEPROM_LIB_H "src/SPIAsEEPROM/SPIAsEEPROM.h"
    typedef uint16_t eeprom_address_t;
  #else
    #define EEPROM_LIB_H <EEPROM.h>
    typedef int eeprom_address_t;
  #endif
  #define RTC_LIB_H <Time.h>
  void initBoard();
  uint16_t freeRam();
  void doSystemReset();
  void jumpToBootloader();

  #if defined(TIMER5_MICROS)
    /*#define micros() (((timer5_overflow_count << 16) + TCNT5) * 4) */ //Fast version of micros() that uses the 4uS tick of timer5. See timers.ino for the overflow ISR of timer5
    #define millis() (ms_counter) //Replaces the standard millis() function with this macro. It is both faster and more accurate. See timers.ino for its counter increment.
    static inline unsigned long micros_safe(); //A version of micros() that is interrupt safe
  #else
    #define micros_safe() micros() //If the timer5 method is not used, the micros_safe() macro is simply an alias for the normal micros()
  #endif
  #define pinIsReserved(pin)  ( ((pin) == 0) ) //Forbiden pins like USB on other boards

  //Mega 2561 MCU does not have a serial3 available. 
  #if not defined(__AVR_ATmega2561__)
    #define USE_SERIAL3
  #endif

/*
***********************************************************************************************************
* Schedules
*/
  //Refer to svn.savannah.nongnu.org/viewvc/trunk/avr-libc/include/avr/iomxx0_1.h?root=avr-libc&view=markup
  #define FUEL1_COUNTER TCNT3
  #define FUEL2_COUNTER TCNT3
  #define FUEL3_COUNTER TCNT3
  #define FUEL4_COUNTER TCNT4
  #define FUEL5_COUNTER TCNT4
  #define FUEL6_COUNTER TCNT4 //Replaces ignition 4
  #define FUEL7_COUNTER TCNT5 //Replaces ignition 3
  #define FUEL8_COUNTER TCNT5 //Replaces ignition 2

  #define IGN1_COUNTER  TCNT5
  #define IGN2_COUNTER  TCNT5
  #define IGN3_COUNTER  TCNT5
  #define IGN4_COUNTER  TCNT4
  #define IGN5_COUNTER  TCNT4
  #define IGN6_COUNTER  TCNT4 //Replaces injector 4
  #define IGN7_COUNTER  TCNT3 //Replaces injector 3
  #define IGN8_COUNTER  TCNT3 //Replaces injector 2

  #define FUEL1_COMPARE OCR3A
  #define FUEL2_COMPARE OCR3B
  #define FUEL3_COMPARE OCR3C
  #define FUEL4_COMPARE OCR4B //Replaces ignition 6
  #define FUEL5_COMPARE OCR4C //Replaces ignition 5
  #define FUEL6_COMPARE OCR4A //Replaces ignition 4
  #define FUEL7_COMPARE OCR5C //Replaces ignition 3
  #define FUEL8_COMPARE OCR5B //Replaces ignition 2

  #define IGN1_COMPARE  OCR5A
  #define IGN2_COMPARE  OCR5B
  #define IGN3_COMPARE  OCR5C
  #define IGN4_COMPARE  OCR4A //Replaces injector 6
  #define IGN5_COMPARE  OCR4C //Replaces injector 5
  #define IGN6_COMPARE  OCR4B //Replaces injector 4
  #define IGN7_COMPARE  OCR3C //Replaces injector 3
  #define IGN8_COMPARE  OCR3B //Replaces injector 2

  //Note that the interrupt flag is reset BEFORE the interrupt is enabled
  #define FUEL1_TIMER_ENABLE() TIFR3 |= (1<<OCF3A); TIMSK3 |= (1 << OCIE3A) //Turn on the A compare unit (ie turn on the interrupt)
  #define FUEL2_TIMER_ENABLE() TIFR3 |= (1<<OCF3B); TIMSK3 |= (1 << OCIE3B) //Turn on the B compare unit (ie turn on the interrupt)
  #define FUEL3_TIMER_ENABLE() TIFR3 |= (1<<OCF3C); TIMSK3 |= (1 << OCIE3C) //Turn on the C compare unit (ie turn on the interrupt)
  #define FUEL4_TIMER_ENABLE() TIFR4 |= (1<<OCF4B); TIMSK4 |= (1 << OCIE4B) //Turn on the B compare unit (ie turn on the interrupt)
  #define FUEL5_TIMER_ENABLE() TIFR4 |= (1<<OCF4C); TIMSK4 |= (1 << OCIE4C) //Turn on the C compare unit (ie turn on the interrupt)
  #define FUEL6_TIMER_ENABLE() TIFR4 |= (1<<OCF4A); TIMSK4 |= (1 << OCIE4A) //Turn on the A compare unit (ie turn on the interrupt)
  #define FUEL7_TIMER_ENABLE() TIFR5 |= (1<<OCF5C); TIMSK5 |= (1 << OCIE5C) //
  #define FUEL8_TIMER_ENABLE() TIFR5 |= (1<<OCF5B); TIMSK5 |= (1 << OCIE5B) //

  #define FUEL1_TIMER_DISABLE() TIMSK3 &= ~(1 << OCIE3A); //Turn off this output compare unit
  #define FUEL2_TIMER_DISABLE() TIMSK3 &= ~(1 << OCIE3B); //Turn off this output compare unit
  #define FUEL3_TIMER_DISABLE() TIMSK3 &= ~(1 << OCIE3C); //Turn off this output compare unit
  #define FUEL4_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4B); //Turn off this output compare unit
  #define FUEL5_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4C); //
  #define FUEL6_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4A); //
  #define FUEL7_TIMER_DISABLE() TIMSK5 &= ~(1 << OCIE5C); //
  #define FUEL8_TIMER_DISABLE() TIMSK5 &= ~(1 << OCIE5B); //

  //These have the TIFR5 bits set to 1 to clear the interrupt flag. This prevents a false interrupt being called the first time the channel is enabled.
  #define IGN1_TIMER_ENABLE() TIFR5 |= (1<<OCF5A); TIMSK5 |= (1 << OCIE5A) //Turn on the A compare unit (ie turn on the interrupt)
  #define IGN2_TIMER_ENABLE() TIFR5 |= (1<<OCF5B); TIMSK5 |= (1 << OCIE5B) //Turn on the B compare unit (ie turn on the interrupt)
  #define IGN3_TIMER_ENABLE() TIFR5 |= (1<<OCF5C); TIMSK5 |= (1 << OCIE5C) //Turn on the C compare unit (ie turn on the interrupt)
  #define IGN4_TIMER_ENABLE() TIFR4 |= (1<<OCF4A); TIMSK4 |= (1 << OCIE4A) //Turn on the A compare unit (ie turn on the interrupt)
  #define IGN5_TIMER_ENABLE() TIFR4 |= (1<<OCF4C); TIMSK4 |= (1 << OCIE4C) //Turn on the A compare unit (ie turn on the interrupt)
  #define IGN6_TIMER_ENABLE() TIFR4 |= (1<<OCF4B); TIMSK4 |= (1 << OCIE4B) //Replaces injector 4
  #define IGN7_TIMER_ENABLE() TIMSK3 |= (1 << OCIE3C) //Replaces injector 3
  #define IGN8_TIMER_ENABLE() TIMSK3 |= (1 << OCIE3B) //Replaces injector 2

  #define IGN1_TIMER_DISABLE() TIMSK5 &= ~(1 << OCIE5A) //Turn off this output compare unit
  #define IGN2_TIMER_DISABLE() TIMSK5 &= ~(1 << OCIE5B) //Turn off this output compare unit
  #define IGN3_TIMER_DISABLE() TIMSK5 &= ~(1 << OCIE5C) //Turn off this output compare unit
  #define IGN4_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4A) //Turn off this output compare unit
  #define IGN5_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4C) //Turn off this output compare unit
  #define IGN6_TIMER_DISABLE() TIMSK4 &= ~(1 << OCIE4B) //Replaces injector 4
  #define IGN7_TIMER_DISABLE() TIMSK3 &= ~(1 << OCIE3C) //Replaces injector 3
  #define IGN8_TIMER_DISABLE() TIMSK3 &= ~(1 << OCIE3B) //Replaces injector 2

  #define MAX_TIMER_PERIOD 262140UL //The longest period of time (in uS) that the timer can permit (IN this case it is 65535 * 4, as each timer tick is 4uS)
  #define uS_TO_TIMER_COMPARE(uS1) ((uS1) >> 2) //Converts a given number of uS into the required number of timer ticks until that time has passed

/*
***********************************************************************************************************
* Auxilliaries
*/
  #define ENABLE_BOOST_TIMER()  TIMSK1 |= (1 << OCIE1A)
  #define DISABLE_BOOST_TIMER() TIMSK1 &= ~(1 << OCIE1A)
  #define ENABLE_VVT_TIMER()    TIMSK1 |= (1 << OCIE1B)
  #define DISABLE_VVT_TIMER()   TIMSK1 &= ~(1 << OCIE1B)

  #define BOOST_TIMER_COMPARE   OCR1A
  #define BOOST_TIMER_COUNTER   TCNT1
  #define VVT_TIMER_COMPARE     OCR1B
  #define VVT_TIMER_COUNTER     TCNT1

/*
***********************************************************************************************************
* Idle
*/
  #define IDLE_COUNTER TCNT1
  #define IDLE_COMPARE OCR1C

  #define IDLE_TIMER_ENABLE() TIMSK1 |= (1 << OCIE1C)
  #define IDLE_TIMER_DISABLE() TIMSK1 &= ~(1 << OCIE1C)

/*
***********************************************************************************************************
* CAN / Second serial
*/


#endif //CORE_AVR
#endif //AVR2560_H