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86 lines
1.7 KiB
C++
86 lines
1.7 KiB
C++
#pragma once
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//
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// FILE: functionGenerator.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.6
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// PURPOSE: wave form generating functions (use with care)
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// URL: https://github.com/RobTillaart/FunctionGenerator
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#include "Arduino.h"
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#define FUNCTIONGENERATOR_LIB_VERSION (F("0.2.6"))
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class funcgen
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{
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public:
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funcgen(float period = 1.0, float amplitude = 1.0, float phase = 0.0, float yShift = 0.0);
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/////////////////////////////////////////////////////////////
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//
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// CONFIGURATION
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//
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void setPeriod(float period = 1.0);
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float getPeriod();
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void setFrequency(float freq = 1.0);
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float getFrequency();
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void setAmplitude(float ampl = 1.0);
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float getAmplitude();
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void setPhase(float phase = 0.0);
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float getPhase();
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void setYShift(float yShift = 0.0);
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float getYShift();
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void setDutyCycle(float dutyCycle);
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float getDutyCycle();
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void setRandomSeed(uint32_t a, uint32_t b = 314159265);
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/////////////////////////////////////////////////////////////
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//
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// FUNCTIONS
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//
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// constant amplitude
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float line();
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// constant zero for calibration.
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float zero();
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// standard wave forms
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float sawtooth(float t, uint8_t mode = 0); // 0 ==> /|. 1 ==> sawtooth |\.
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float triangle(float t);
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float square(float t);
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float sinus(float t);
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float stair(float t, uint16_t steps = 8, uint8_t mode = 0);
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float random();
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float random_DC(); // duty cycle variant. Experimental.
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private:
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float _period;
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float _freq0;
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float _freq1;
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float _freq2;
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float _freq4;
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float _amplitude;
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float _phase;
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float _yShift;
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float _dutyCycle;
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// Marsaglia 'constants'
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uint32_t _m_w = 1;
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uint32_t _m_z = 2;
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uint32_t _random();
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};
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// -- END OF FILE --
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