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142 lines
2.3 KiB
C++
142 lines
2.3 KiB
C++
//
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// FILE: StopWatch.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.3.4
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// DATE: 2011-01-04
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// PURPOSE: Arduino Library implementing a stopwatch including seconds, milliseconds microseconds
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// URL: https://github.com/RobTillaart/StopWatch_RT
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//
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// The library is based upon millis() and therefore
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// has the same restrictions as millis() has with respect to overflow.
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#include "StopWatch.h"
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StopWatch::StopWatch(const enum Resolution resolution)
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{
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reset();
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setResolution(resolution);
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}
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void StopWatch::start()
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{
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if ((_state == StopWatch::RESET) || (_state == StopWatch::STOPPED))
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{
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_state = StopWatch::RUNNING;
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uint32_t t = _gettime();
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_startTime += t - _stopTime;
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_stopTime = t;
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}
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}
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void StopWatch::stop()
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{
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if (_state == StopWatch::RUNNING)
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{
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_stopTime = _gettime();
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_state = StopWatch::STOPPED;
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}
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}
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void StopWatch::reset()
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{
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_state = StopWatch::RESET;
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_startTime = _stopTime = 0;
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}
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// made const as printTo expect a const object.
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uint32_t StopWatch::elapsed() const
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{
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if (_state == StopWatch::RUNNING)
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{
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return _gettime() - _startTime;
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}
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return _stopTime - _startTime;
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}
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char StopWatch::getUnits()
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{
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return _resolution;
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}
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bool StopWatch::isRunning()
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{
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return _state == StopWatch::RUNNING;
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}
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bool StopWatch::isStopped()
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{
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return _state == StopWatch::STOPPED;
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}
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bool StopWatch::isReset()
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{
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return _state == StopWatch::RESET;
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}
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void StopWatch::setResolution(const enum Resolution resolution)
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{
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reset();
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_resolution = resolution;
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switch(_resolution)
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{
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case MICROS:
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_gettime = _micros;
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break;
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case SECONDS:
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_gettime = seconds;
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break;
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case MINUTES:
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_gettime = minutes;
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break;
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case MILLIS:
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default:
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_gettime = _millis;
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_resolution = MILLIS; // for default!
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break;
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}
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}
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////////////////////////////////////////////////
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//
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// PRINTABLE
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//
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size_t StopWatch::printTo(Print& p) const
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{
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uint32_t ti = StopWatch::elapsed();
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size_t n = p.print(ti);
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switch(_resolution)
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{
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case MICROS: n += p.print(" us"); break;
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case MILLIS: n += p.print(" ms"); break;
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case SECONDS: n += p.print(" s"); break;
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case MINUTES: n += p.print(" m."); break;
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}
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return n;
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}
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////////////////////////////////////////////////
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//
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// PRIVATE
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//
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// -- END OF FILE --
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