#pragma once
//
//    FILE: PulsePattern.h
//  AUTHOR: Rob dot Tillaart at gmail dot com
// VERSION: 0.1.3
//    DATE: 2012-11-23
// PURPOSE: Arduino Library to generate repeating pulse patterns
//          sends a pulse pattern to a digital pin (continuously)
// HISTORY: See PulsePattern.cpp
//

#if !defined(__AVR__)
  #error "Only support for AVR boards"
#endif


#include "Arduino.h"


#define PULSEPATTERN_LIB_VERSION    (F("0.1.3"))


#define NOTINIT                   -1
#define STOPPED                   0
#define RUNNING                   1


#define NO_CLOCK                  0   // timer off
#define PRESCALE_1                1
#define PRESCALE_8                2
#define PRESCALE_64               3
#define PRESCALE_256              4
#define PRESCALE_1024             5
#define EXT_T1_FALLING            6  // external clock
#define EXT_T2_RISING             7  // external clock


class PulsePattern
{
public:
  PulsePattern();

  void  init(const uint8_t pin,
             const uint16_t * ar, const uint8_t size,
             const uint8_t level, const uint8_t prescaler);

  void  setFactor(float perc) { _factor = round(4096 * (1 + perc)); };
  float getFactor()           { return _factor / 4096.0 - 1; };
  void  start();
  void  cont();
  void  stop();
  bool  isRunning() const { return _state == RUNNING; };

  void  worker();

private:
  void  stopTimer();
  void  setTimer(const uint16_t cc) const;

  uint32_t   _factor = 4096;
  uint16_t * _ar;
  uint8_t    _size;
  uint8_t    _pin;
  uint8_t    _pinbit;
  volatile uint8_t * _pinout;
  uint8_t           _prescaler;
  volatile uint8_t  _level;
  volatile int8_t   _state;
  volatile uint8_t  _cnt;
};

extern PulsePattern PPGenerator;

// -- END OF FILE --