#pragma once
//
//    FILE: StopWatch.h
//  AUTHOR: Rob Tillaart
// VERSION: 0.3.1
// PURPOSE: Arduino Library implementing a stopwatch including seconds, milliseconds microseconds
// HISTORY: See StopWatch.cpp
//     URL: https://github.com/RobTillaart/StopWatch_RT
//          http://playground.arduino.cc/Code/StopWatchClass
//


#include "Arduino.h"


#define STOPWATCH_LIB_VERSION (F("0.3.1"))


// NOTE: adjust divider can fix timing inaccuracies (to some extend)
#ifndef STOPWATCH_SECONDS_DIVIDER
#define STOPWATCH_SECONDS_DIVIDER 1000
#endif

#ifndef STOPWATCH_MINUTES_DIVIDER
#define STOPWATCH_MINUTES_DIVIDER 60000
#endif


class StopWatch: public Printable
{
public:
  enum State      { RESET, RUNNING, STOPPED };
  enum Resolution { MICROS, MILLIS, SECONDS, MINUTES};

  explicit StopWatch(const enum Resolution res = MILLIS);
  void     start();
  void     stop();
  void     reset();
  // elapsed() made const as printTo expect a const object.
  uint32_t elapsed() const;    // replaced value()

  bool     isRunning() { return _state == StopWatch::RUNNING; };
  enum     State state() { return _state; };
 
  void     setResolution(const enum Resolution res);
  enum     Resolution resolution() { return _res; };

  // PRINTABLE
  size_t printTo(Print& p) const;

  // value is obsolete => elapsed() is more descriptive
  // uint32_t value() { return elapsed(); };

private:
  enum State _state;
  enum Resolution _res;

  uint32_t _starttime;
  uint32_t _stoptime;

  uint32_t (*_gettime)(void);
  static uint32_t _micros()     { return micros(); };   // wrapper for ESP proc.
  static uint32_t _millis()     { return millis(); };
  static uint32_t seconds()     { return millis() / STOPWATCH_SECONDS_DIVIDER; };
  static uint32_t minutes()     { return millis() / STOPWATCH_MINUTES_DIVIDER; };
};

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