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0.2.5 FunctionGenerator
This commit is contained in:
Rob Tillaart
parent
7132bb78bd
commit
cdd3ab20e6
@ -6,7 +6,7 @@ jobs:
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lint:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- uses: actions/checkout@v3
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- uses: arduino/arduino-lint-action@v1
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with:
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library-manager: update
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@ -8,7 +8,7 @@ jobs:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- uses: actions/checkout@v3
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- uses: ruby/setup-ruby@v1
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with:
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ruby-version: 2.6
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@ -10,7 +10,7 @@ jobs:
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test:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v2
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- uses: actions/checkout@v3
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- name: json-syntax-check
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uses: limitusus/json-syntax-check@v1
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with:
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@ -6,12 +6,23 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
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and this project adheres to [Semantic Versioning](http://semver.org/).
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## [0.2.5] - 2023-03-25
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- add **setDutyCycle()**, **getDutyCycle()**
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- implement duty cycle for square(), triangle() and random()
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- add **seedRandom(a, b)**
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- add some optimizations
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- move code from .h to .cpp
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- update readme.md
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- update GitHub actions
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- update license 2023
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- minor edits
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## [0.2.4] - 2022-11-07
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- add changelog.md
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- add rp2040 to build-CI
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- update readme.md
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## [0.2.3] - 2021-12-18
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- update library.json, license, minor edits
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@ -2,15 +2,14 @@
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//
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// FILE: functionGenerator.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.2.4
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// VERSION: 0.2.5
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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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//
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#include "Arduino.h"
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#define FUNCTIONGENERATOR_LIB_VERSION (F("0.2.4"))
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#define FUNCTIONGENERATOR_LIB_VERSION (F("0.2.5"))
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class funcgen
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@ -18,31 +17,51 @@ class funcgen
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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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// configuration
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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() { return _period; };
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void setFrequency(float freq = 1.0) { setPeriod(1/freq); };
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float getFrequency() { return _freq1; };
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float getPeriod();
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void setAmplitude(float ampl = 1.0) { _amplitude = ampl; };
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float getAmplitude() { return _amplitude; };
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void setPhase(float phase = 0.0) { _phase = phase; };
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float getPhase() { return _phase; };
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void setYShift(float yShift = 0.0) { _yShift = yShift; };
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float getYShift() { return _yShift; };
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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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// 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);
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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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@ -53,6 +72,8 @@ private:
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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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@ -1,6 +1,6 @@
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MIT License
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Copyright (c) 2015-2022 Rob Tillaart
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Copyright (c) 2015-2023 Rob Tillaart
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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@ -4,7 +4,6 @@
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// PURPOSE: demo function generators
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// DATE: 2015-01-03
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// URL: https://github.com/RobTillaart/FunctionGenerator
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//
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#include "functionGenerator.h"
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@ -17,7 +17,9 @@ funcgen gen2;
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void setup()
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{
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Serial.begin(115200);
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// Serial.print("Start functionGeneratorPerformance - LIB VERSION: ");
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// Serial.println();
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// Serial.println(__FILE__);
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// Serial.print("FUNCTIONGENERATOR_LIB_VERSION: ");
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// Serial.println(FUNCTIONGENERATOR_LIB_VERSION);
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gen1.setFrequency(13);
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@ -4,7 +4,6 @@
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// PURPOSE: demo function generators
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// DATE: 2015-01-01
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// URL: https://github.com/RobTillaart/FunctionGenerator
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//
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#include "functionGenerator.h"
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@ -38,6 +37,8 @@ void setup()
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delay(10);
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test_random();
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delay(10);
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test_random_DC();
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delay(10);
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test_line();
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delay(10);
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test_zero();
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@ -169,6 +170,22 @@ void test_random()
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}
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void test_random_DC()
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{
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start = micros();
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for (int i = 0; i < 10000; i++)
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{
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t = gen.random_DC();
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}
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stop = micros();
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Serial.print(__FUNCTION__);
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Serial.print(":\t");
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Serial.print((stop - start) / 10000.0);
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Serial.print("\t");
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Serial.println(1000000.0 / ((stop - start) / 10000.0));
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}
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void test_line()
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{
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start = micros();
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@ -0,0 +1,414 @@
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Start functionGeneratorPerformance - LIB VERSION: 0.2.4
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func usec max calls/sec
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test_square: 53.00 18869.07
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test_sawtooth: 62.13 16095.80
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test_triangle: 74.89 13352.77
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test_sinus: 164.87 6065.36
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test_stair: 81.30 12299.52
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test_random: 37.71 26518.17
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test_line: 0.76 1324152.50
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test_zero: 0.76 1324152.50
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t sqr saw tri sin str rnd line zero
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-4.00 -1.00 1.00 -1.00 -0.00 1.00 0.37 1.00 0.00
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-3.98 1.00 -0.96 -0.92 0.13 -1.00 0.13 1.00 0.00
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-3.96 1.00 -0.92 -0.84 0.25 -1.00 0.21 1.00 0.00
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-3.94 1.00 -0.88 -0.76 0.37 -1.00 0.37 1.00 0.00
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-3.92 1.00 -0.84 -0.68 0.48 -1.00 0.50 1.00 0.00
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||||
-3.90 1.00 -0.80 -0.60 0.59 -1.00 0.96 1.00 0.00
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||||
-3.88 1.00 -0.76 -0.52 0.68 -1.00 0.15 1.00 0.00
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||||
-3.86 1.00 -0.72 -0.44 0.77 -0.71 0.92 1.00 0.00
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||||
-3.84 1.00 -0.68 -0.36 0.84 -0.71 0.21 1.00 0.00
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||||
-3.82 1.00 -0.64 -0.28 0.90 -0.71 0.69 1.00 0.00
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||||
-3.80 1.00 -0.60 -0.20 0.95 -0.71 0.82 1.00 0.00
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||||
-3.78 1.00 -0.56 -0.12 0.98 -0.71 0.33 1.00 0.00
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||||
-3.76 1.00 -0.52 -0.04 1.00 -0.71 0.96 1.00 0.00
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||||
-3.74 1.00 -0.48 0.04 1.00 -0.43 0.63 1.00 0.00
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||||
-3.72 1.00 -0.44 0.12 0.98 -0.43 0.23 1.00 0.00
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||||
-3.70 1.00 -0.40 0.20 0.95 -0.43 0.12 1.00 0.00
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||||
-3.68 1.00 -0.36 0.28 0.90 -0.43 0.74 1.00 0.00
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||||
-3.66 1.00 -0.32 0.36 0.84 -0.43 0.19 1.00 0.00
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||||
-3.64 1.00 -0.28 0.44 0.77 -0.43 0.60 1.00 0.00
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||||
-3.62 1.00 -0.24 0.52 0.68 -0.14 0.24 1.00 0.00
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||||
-3.60 1.00 -0.20 0.60 0.59 -0.14 0.23 1.00 0.00
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||||
-3.58 1.00 -0.16 0.68 0.48 -0.14 0.23 1.00 0.00
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||||
-3.56 1.00 -0.12 0.76 0.37 -0.14 0.96 1.00 0.00
|
||||
-3.54 1.00 -0.08 0.84 0.25 -0.14 0.01 1.00 0.00
|
||||
-3.52 1.00 -0.04 0.92 0.13 -0.14 0.10 1.00 0.00
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||||
-3.50 1.00 0.00 1.00 0.00 -0.14 0.63 1.00 0.00
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||||
-3.48 -1.00 0.04 0.92 -0.13 0.14 0.16 1.00 0.00
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||||
-3.46 -1.00 0.08 0.84 -0.25 0.14 0.62 1.00 0.00
|
||||
-3.44 -1.00 0.12 0.76 -0.37 0.14 0.91 1.00 0.00
|
||||
-3.42 -1.00 0.16 0.68 -0.48 0.14 0.98 1.00 0.00
|
||||
-3.40 -1.00 0.20 0.60 -0.59 0.14 0.73 1.00 0.00
|
||||
-3.38 -1.00 0.24 0.52 -0.68 0.14 0.14 1.00 0.00
|
||||
-3.36 -1.00 0.28 0.44 -0.77 0.43 0.53 1.00 0.00
|
||||
-3.34 -1.00 0.32 0.36 -0.84 0.43 0.11 1.00 0.00
|
||||
-3.32 -1.00 0.36 0.28 -0.90 0.43 0.21 1.00 0.00
|
||||
-3.30 -1.00 0.40 0.20 -0.95 0.43 0.17 1.00 0.00
|
||||
-3.28 -1.00 0.44 0.12 -0.98 0.43 0.36 1.00 0.00
|
||||
-3.26 -1.00 0.48 0.04 -1.00 0.43 0.89 1.00 0.00
|
||||
-3.24 -1.00 0.52 -0.04 -1.00 0.71 0.16 1.00 0.00
|
||||
-3.22 -1.00 0.56 -0.12 -0.98 0.71 0.19 1.00 0.00
|
||||
-3.20 -1.00 0.60 -0.20 -0.95 0.71 0.13 1.00 0.00
|
||||
-3.18 -1.00 0.64 -0.28 -0.90 0.71 0.12 1.00 0.00
|
||||
-3.16 -1.00 0.68 -0.36 -0.84 0.71 0.20 1.00 0.00
|
||||
-3.14 -1.00 0.72 -0.44 -0.77 0.71 0.81 1.00 0.00
|
||||
-3.12 -1.00 0.76 -0.52 -0.68 1.00 0.52 1.00 0.00
|
||||
-3.10 -1.00 0.80 -0.60 -0.59 1.00 0.82 1.00 0.00
|
||||
-3.08 -1.00 0.84 -0.68 -0.48 1.00 0.28 1.00 0.00
|
||||
-3.06 -1.00 0.88 -0.76 -0.37 1.00 0.57 1.00 0.00
|
||||
-3.04 -1.00 0.92 -0.84 -0.25 1.00 0.30 1.00 0.00
|
||||
-3.02 -1.00 0.96 -0.92 -0.13 1.00 0.08 1.00 0.00
|
||||
-3.00 -1.00 1.00 -1.00 -0.00 1.00 0.20 1.00 0.00
|
||||
-2.98 1.00 -0.96 -0.92 0.13 -1.00 0.44 1.00 0.00
|
||||
-2.96 1.00 -0.92 -0.84 0.25 -1.00 0.98 1.00 0.00
|
||||
-2.94 1.00 -0.88 -0.76 0.37 -1.00 0.65 1.00 0.00
|
||||
-2.92 1.00 -0.84 -0.68 0.48 -1.00 0.70 1.00 0.00
|
||||
-2.90 1.00 -0.80 -0.60 0.59 -1.00 0.02 1.00 0.00
|
||||
-2.88 1.00 -0.76 -0.52 0.68 -1.00 0.39 1.00 0.00
|
||||
-2.86 1.00 -0.72 -0.44 0.77 -0.71 0.95 1.00 0.00
|
||||
-2.84 1.00 -0.68 -0.36 0.84 -0.71 0.12 1.00 0.00
|
||||
-2.82 1.00 -0.64 -0.28 0.90 -0.71 0.79 1.00 0.00
|
||||
-2.80 1.00 -0.60 -0.20 0.95 -0.71 0.65 1.00 0.00
|
||||
-2.78 1.00 -0.56 -0.12 0.98 -0.71 0.62 1.00 0.00
|
||||
-2.76 1.00 -0.52 -0.04 1.00 -0.71 0.01 1.00 0.00
|
||||
-2.74 1.00 -0.48 0.04 1.00 -0.43 0.62 1.00 0.00
|
||||
-2.72 1.00 -0.44 0.12 0.98 -0.43 0.78 1.00 0.00
|
||||
-2.70 1.00 -0.40 0.20 0.95 -0.43 0.55 1.00 0.00
|
||||
-2.68 1.00 -0.36 0.28 0.90 -0.43 0.06 1.00 0.00
|
||||
-2.66 1.00 -0.32 0.36 0.84 -0.43 0.84 1.00 0.00
|
||||
-2.64 1.00 -0.28 0.44 0.77 -0.43 0.75 1.00 0.00
|
||||
-2.62 1.00 -0.24 0.52 0.68 -0.14 0.71 1.00 0.00
|
||||
-2.60 1.00 -0.20 0.60 0.59 -0.14 0.50 1.00 0.00
|
||||
-2.58 1.00 -0.16 0.68 0.48 -0.14 0.82 1.00 0.00
|
||||
-2.56 1.00 -0.12 0.76 0.37 -0.14 0.37 1.00 0.00
|
||||
-2.54 1.00 -0.08 0.84 0.25 -0.14 0.44 1.00 0.00
|
||||
-2.52 1.00 -0.04 0.92 0.13 -0.14 0.47 1.00 0.00
|
||||
-2.50 1.00 0.00 1.00 0.00 -0.14 0.00 1.00 0.00
|
||||
-2.48 -1.00 0.04 0.92 -0.13 0.14 0.25 1.00 0.00
|
||||
-2.46 -1.00 0.08 0.84 -0.25 0.14 0.01 1.00 0.00
|
||||
-2.44 -1.00 0.12 0.76 -0.37 0.14 0.11 1.00 0.00
|
||||
-2.42 -1.00 0.16 0.68 -0.48 0.14 0.76 1.00 0.00
|
||||
-2.40 -1.00 0.20 0.60 -0.59 0.14 0.77 1.00 0.00
|
||||
-2.38 -1.00 0.24 0.52 -0.68 0.14 0.61 1.00 0.00
|
||||
-2.36 -1.00 0.28 0.44 -0.77 0.43 0.52 1.00 0.00
|
||||
-2.34 -1.00 0.32 0.36 -0.84 0.43 0.78 1.00 0.00
|
||||
-2.32 -1.00 0.36 0.28 -0.90 0.43 0.35 1.00 0.00
|
||||
-2.30 -1.00 0.40 0.20 -0.95 0.43 0.77 1.00 0.00
|
||||
-2.28 -1.00 0.44 0.12 -0.98 0.43 0.20 1.00 0.00
|
||||
-2.26 -1.00 0.48 0.04 -1.00 0.43 0.04 1.00 0.00
|
||||
-2.24 -1.00 0.52 -0.04 -1.00 0.71 0.46 1.00 0.00
|
||||
-2.22 -1.00 0.56 -0.12 -0.98 0.71 0.00 1.00 0.00
|
||||
-2.20 -1.00 0.60 -0.20 -0.95 0.71 0.96 1.00 0.00
|
||||
-2.18 -1.00 0.64 -0.28 -0.90 0.71 0.07 1.00 0.00
|
||||
-2.16 -1.00 0.68 -0.36 -0.84 0.71 0.14 1.00 0.00
|
||||
-2.14 -1.00 0.72 -0.44 -0.77 0.71 0.27 1.00 0.00
|
||||
-2.12 -1.00 0.76 -0.52 -0.68 1.00 0.30 1.00 0.00
|
||||
-2.10 -1.00 0.80 -0.60 -0.59 1.00 0.56 1.00 0.00
|
||||
-2.08 -1.00 0.84 -0.68 -0.48 1.00 0.28 1.00 0.00
|
||||
-2.06 -1.00 0.88 -0.76 -0.37 1.00 0.59 1.00 0.00
|
||||
-2.04 -1.00 0.92 -0.84 -0.25 1.00 0.37 1.00 0.00
|
||||
-2.02 -1.00 0.96 -0.92 -0.13 1.00 0.45 1.00 0.00
|
||||
-2.00 -1.00 1.00 -1.00 -0.00 1.00 0.95 1.00 0.00
|
||||
-1.98 1.00 -0.96 -0.92 0.13 -1.00 0.06 1.00 0.00
|
||||
-1.96 1.00 -0.92 -0.84 0.25 -1.00 0.42 1.00 0.00
|
||||
-1.94 1.00 -0.88 -0.76 0.37 -1.00 0.80 1.00 0.00
|
||||
-1.92 1.00 -0.84 -0.68 0.48 -1.00 0.83 1.00 0.00
|
||||
-1.90 1.00 -0.80 -0.60 0.59 -1.00 0.00 1.00 0.00
|
||||
-1.88 1.00 -0.76 -0.52 0.68 -1.00 0.13 1.00 0.00
|
||||
-1.86 1.00 -0.72 -0.44 0.77 -0.71 0.27 1.00 0.00
|
||||
-1.84 1.00 -0.68 -0.36 0.84 -0.71 0.44 1.00 0.00
|
||||
-1.82 1.00 -0.64 -0.28 0.90 -0.71 0.25 1.00 0.00
|
||||
-1.80 1.00 -0.60 -0.20 0.95 -0.71 0.95 1.00 0.00
|
||||
-1.78 1.00 -0.56 -0.12 0.98 -0.71 0.85 1.00 0.00
|
||||
-1.76 1.00 -0.52 -0.04 1.00 -0.71 0.83 1.00 0.00
|
||||
-1.74 1.00 -0.48 0.04 1.00 -0.43 0.32 1.00 0.00
|
||||
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|
||||
2.48 1.00 -0.04 0.92 0.13 -0.14 0.45 1.00 0.00
|
||||
2.50 -1.00 0.00 1.00 -0.00 0.14 0.15 1.00 0.00
|
||||
2.52 -1.00 0.04 0.92 -0.13 0.14 0.92 1.00 0.00
|
||||
2.54 -1.00 0.08 0.84 -0.25 0.14 0.38 1.00 0.00
|
||||
2.56 -1.00 0.12 0.76 -0.37 0.14 0.70 1.00 0.00
|
||||
2.58 -1.00 0.16 0.68 -0.48 0.14 0.82 1.00 0.00
|
||||
2.60 -1.00 0.20 0.60 -0.59 0.14 0.57 1.00 0.00
|
||||
2.62 -1.00 0.24 0.52 -0.68 0.14 0.71 1.00 0.00
|
||||
2.64 -1.00 0.28 0.44 -0.77 0.43 0.31 1.00 0.00
|
||||
2.66 -1.00 0.32 0.36 -0.84 0.43 0.23 1.00 0.00
|
||||
2.68 -1.00 0.36 0.28 -0.90 0.43 0.97 1.00 0.00
|
||||
2.70 -1.00 0.40 0.20 -0.95 0.43 0.86 1.00 0.00
|
||||
2.72 -1.00 0.44 0.12 -0.98 0.43 0.41 1.00 0.00
|
||||
2.74 -1.00 0.48 0.04 -1.00 0.43 0.57 1.00 0.00
|
||||
2.76 -1.00 0.52 -0.04 -1.00 0.71 0.06 1.00 0.00
|
||||
2.78 -1.00 0.56 -0.12 -0.98 0.71 0.19 1.00 0.00
|
||||
2.80 -1.00 0.60 -0.20 -0.95 0.71 0.09 1.00 0.00
|
||||
2.82 -1.00 0.64 -0.28 -0.90 0.71 0.46 1.00 0.00
|
||||
2.84 -1.00 0.68 -0.36 -0.84 0.71 0.06 1.00 0.00
|
||||
2.86 -1.00 0.72 -0.44 -0.77 0.71 0.86 1.00 0.00
|
||||
2.88 -1.00 0.76 -0.52 -0.68 1.00 0.54 1.00 0.00
|
||||
2.90 -1.00 0.80 -0.60 -0.59 1.00 0.42 1.00 0.00
|
||||
2.92 -1.00 0.84 -0.68 -0.48 1.00 0.08 1.00 0.00
|
||||
2.94 -1.00 0.88 -0.76 -0.37 1.00 0.76 1.00 0.00
|
||||
2.96 -1.00 0.92 -0.84 -0.25 1.00 0.91 1.00 0.00
|
||||
2.98 -1.00 0.96 -0.92 -0.13 1.00 0.55 1.00 0.00
|
||||
3.00 1.00 -1.00 -1.00 0.00 -1.00 0.46 1.00 0.00
|
||||
3.02 1.00 -0.96 -0.92 0.13 -1.00 0.82 1.00 0.00
|
||||
3.04 1.00 -0.92 -0.84 0.25 -1.00 0.59 1.00 0.00
|
||||
3.06 1.00 -0.88 -0.76 0.37 -1.00 0.29 1.00 0.00
|
||||
3.08 1.00 -0.84 -0.68 0.48 -1.00 0.42 1.00 0.00
|
||||
3.10 1.00 -0.80 -0.60 0.59 -1.00 0.29 1.00 0.00
|
||||
3.12 1.00 -0.76 -0.52 0.68 -1.00 0.51 1.00 0.00
|
||||
3.14 1.00 -0.72 -0.44 0.77 -0.71 0.58 1.00 0.00
|
||||
3.16 1.00 -0.68 -0.36 0.84 -0.71 0.16 1.00 0.00
|
||||
3.18 1.00 -0.64 -0.28 0.90 -0.71 0.86 1.00 0.00
|
||||
3.20 1.00 -0.60 -0.20 0.95 -0.71 0.04 1.00 0.00
|
||||
3.22 1.00 -0.56 -0.12 0.98 -0.71 0.59 1.00 0.00
|
||||
3.24 1.00 -0.52 -0.04 1.00 -0.71 0.14 1.00 0.00
|
||||
3.26 1.00 -0.48 0.04 1.00 -0.43 0.48 1.00 0.00
|
||||
3.28 1.00 -0.44 0.12 0.98 -0.43 0.65 1.00 0.00
|
||||
3.30 1.00 -0.40 0.20 0.95 -0.43 0.54 1.00 0.00
|
||||
3.32 1.00 -0.36 0.28 0.90 -0.43 0.72 1.00 0.00
|
||||
3.34 1.00 -0.32 0.36 0.84 -0.43 0.66 1.00 0.00
|
||||
3.36 1.00 -0.28 0.44 0.77 -0.43 0.66 1.00 0.00
|
||||
3.38 1.00 -0.24 0.52 0.68 -0.14 0.66 1.00 0.00
|
||||
3.40 1.00 -0.20 0.60 0.59 -0.14 0.81 1.00 0.00
|
||||
3.42 1.00 -0.16 0.68 0.48 -0.14 0.09 1.00 0.00
|
||||
3.44 1.00 -0.12 0.76 0.37 -0.14 0.01 1.00 0.00
|
||||
3.46 1.00 -0.08 0.84 0.25 -0.14 0.70 1.00 0.00
|
||||
3.48 1.00 -0.04 0.92 0.13 -0.14 0.29 1.00 0.00
|
||||
3.50 -1.00 0.00 1.00 -0.00 0.14 0.39 1.00 0.00
|
||||
3.52 -1.00 0.04 0.92 -0.13 0.14 0.60 1.00 0.00
|
||||
3.54 -1.00 0.08 0.84 -0.25 0.14 0.04 1.00 0.00
|
||||
3.56 -1.00 0.12 0.76 -0.37 0.14 0.51 1.00 0.00
|
||||
3.58 -1.00 0.16 0.68 -0.48 0.14 0.61 1.00 0.00
|
||||
3.60 -1.00 0.20 0.60 -0.59 0.14 0.19 1.00 0.00
|
||||
3.62 -1.00 0.24 0.52 -0.68 0.14 0.99 1.00 0.00
|
||||
3.64 -1.00 0.28 0.44 -0.77 0.43 0.69 1.00 0.00
|
||||
3.66 -1.00 0.32 0.36 -0.84 0.43 0.83 1.00 0.00
|
||||
3.68 -1.00 0.36 0.28 -0.90 0.43 0.63 1.00 0.00
|
||||
3.70 -1.00 0.40 0.20 -0.95 0.43 0.71 1.00 0.00
|
||||
3.72 -1.00 0.44 0.12 -0.98 0.43 0.84 1.00 0.00
|
||||
3.74 -1.00 0.48 0.04 -1.00 0.43 0.60 1.00 0.00
|
||||
3.76 -1.00 0.52 -0.04 -1.00 0.71 0.07 1.00 0.00
|
||||
3.78 -1.00 0.56 -0.12 -0.98 0.71 0.62 1.00 0.00
|
||||
3.80 -1.00 0.60 -0.20 -0.95 0.71 0.40 1.00 0.00
|
||||
3.82 -1.00 0.64 -0.28 -0.90 0.71 0.82 1.00 0.00
|
||||
3.84 -1.00 0.68 -0.36 -0.84 0.71 0.69 1.00 0.00
|
||||
3.86 -1.00 0.72 -0.44 -0.77 0.71 0.57 1.00 0.00
|
||||
3.88 -1.00 0.76 -0.52 -0.68 1.00 0.99 1.00 0.00
|
||||
3.90 -1.00 0.80 -0.60 -0.59 1.00 0.27 1.00 0.00
|
||||
3.92 -1.00 0.84 -0.68 -0.48 1.00 0.28 1.00 0.00
|
||||
3.94 -1.00 0.88 -0.76 -0.37 1.00 0.49 1.00 0.00
|
||||
3.96 -1.00 0.92 -0.84 -0.25 1.00 0.86 1.00 0.00
|
||||
3.98 -1.00 0.96 -0.92 -0.13 1.00 0.39 1.00 0.00
|
||||
|
||||
done...
|
||||
@ -0,0 +1,415 @@
|
||||
Start functionGeneratorPerformance - LIB VERSION: 0.2.5
|
||||
func usec max calls/sec
|
||||
test_square: 55.20 18116.73
|
||||
test_sawtooth: 62.32 16047.04
|
||||
test_triangle: 80.42 12434.10
|
||||
test_sinus: 164.87 6065.36
|
||||
test_stair: 81.49 12271.02
|
||||
test_random: 43.18 23159.08
|
||||
test_random_DC: 67.75 14760.93
|
||||
test_line: 0.76 1322751.37
|
||||
test_zero: 0.75 1325556.75
|
||||
|
||||
t sqr saw tri sin str rnd line zero
|
||||
-4.00 -1.00 1.00 -1.00 -0.00 1.00 0.50 1.00 0.00
|
||||
-3.98 1.00 -0.96 -0.92 0.13 -1.00 0.06 1.00 0.00
|
||||
-3.96 1.00 -0.92 -0.84 0.25 -1.00 0.34 1.00 0.00
|
||||
-3.94 1.00 -0.88 -0.76 0.37 -1.00 0.33 1.00 0.00
|
||||
-3.92 1.00 -0.84 -0.68 0.48 -1.00 0.95 1.00 0.00
|
||||
-3.90 1.00 -0.80 -0.60 0.59 -1.00 0.75 1.00 0.00
|
||||
-3.88 1.00 -0.76 -0.52 0.68 -1.00 0.20 1.00 0.00
|
||||
-3.86 1.00 -0.72 -0.44 0.77 -0.71 0.33 1.00 0.00
|
||||
-3.84 1.00 -0.68 -0.36 0.84 -0.71 0.25 1.00 0.00
|
||||
-3.82 1.00 -0.64 -0.28 0.90 -0.71 0.39 1.00 0.00
|
||||
-3.80 1.00 -0.60 -0.20 0.95 -0.71 0.42 1.00 0.00
|
||||
-3.78 1.00 -0.56 -0.12 0.98 -0.71 0.95 1.00 0.00
|
||||
-3.76 1.00 -0.52 -0.04 1.00 -0.71 0.56 1.00 0.00
|
||||
-3.74 1.00 -0.48 0.04 1.00 -0.43 0.64 1.00 0.00
|
||||
-3.72 1.00 -0.44 0.12 0.98 -0.43 0.17 1.00 0.00
|
||||
-3.70 1.00 -0.40 0.20 0.95 -0.43 0.78 1.00 0.00
|
||||
-3.68 1.00 -0.36 0.28 0.90 -0.43 0.02 1.00 0.00
|
||||
-3.66 1.00 -0.32 0.36 0.84 -0.43 0.31 1.00 0.00
|
||||
-3.64 1.00 -0.28 0.44 0.77 -0.43 0.49 1.00 0.00
|
||||
-3.62 1.00 -0.24 0.52 0.68 -0.14 0.09 1.00 0.00
|
||||
-3.60 1.00 -0.20 0.60 0.59 -0.14 0.21 1.00 0.00
|
||||
-3.58 1.00 -0.16 0.68 0.48 -0.14 0.82 1.00 0.00
|
||||
-3.56 1.00 -0.12 0.76 0.37 -0.14 0.51 1.00 0.00
|
||||
-3.54 1.00 -0.08 0.84 0.25 -0.14 0.74 1.00 0.00
|
||||
-3.52 1.00 -0.04 0.92 0.13 -0.14 0.20 1.00 0.00
|
||||
-3.50 1.00 0.00 1.00 0.00 -0.14 0.27 1.00 0.00
|
||||
-3.48 -1.00 0.04 0.92 -0.13 0.14 0.15 1.00 0.00
|
||||
-3.46 -1.00 0.08 0.84 -0.25 0.14 0.67 1.00 0.00
|
||||
-3.44 -1.00 0.12 0.76 -0.37 0.14 0.54 1.00 0.00
|
||||
-3.42 -1.00 0.16 0.68 -0.48 0.14 0.44 1.00 0.00
|
||||
-3.40 -1.00 0.20 0.60 -0.59 0.14 0.85 1.00 0.00
|
||||
-3.38 -1.00 0.24 0.52 -0.68 0.14 0.90 1.00 0.00
|
||||
-3.36 -1.00 0.28 0.44 -0.77 0.43 0.43 1.00 0.00
|
||||
-3.34 -1.00 0.32 0.36 -0.84 0.43 0.11 1.00 0.00
|
||||
-3.32 -1.00 0.36 0.28 -0.90 0.43 0.91 1.00 0.00
|
||||
-3.30 -1.00 0.40 0.20 -0.95 0.43 0.79 1.00 0.00
|
||||
-3.28 -1.00 0.44 0.12 -0.98 0.43 0.17 1.00 0.00
|
||||
-3.26 -1.00 0.48 0.04 -1.00 0.43 0.72 1.00 0.00
|
||||
-3.24 -1.00 0.52 -0.04 -1.00 0.71 0.77 1.00 0.00
|
||||
-3.22 -1.00 0.56 -0.12 -0.98 0.71 0.86 1.00 0.00
|
||||
-3.20 -1.00 0.60 -0.20 -0.95 0.71 0.50 1.00 0.00
|
||||
-3.18 -1.00 0.64 -0.28 -0.90 0.71 0.42 1.00 0.00
|
||||
-3.16 -1.00 0.68 -0.36 -0.84 0.71 0.73 1.00 0.00
|
||||
-3.14 -1.00 0.72 -0.44 -0.77 0.71 0.01 1.00 0.00
|
||||
-3.12 -1.00 0.76 -0.52 -0.68 1.00 0.52 1.00 0.00
|
||||
-3.10 -1.00 0.80 -0.60 -0.59 1.00 0.72 1.00 0.00
|
||||
-3.08 -1.00 0.84 -0.68 -0.48 1.00 0.61 1.00 0.00
|
||||
-3.06 -1.00 0.88 -0.76 -0.37 1.00 0.41 1.00 0.00
|
||||
-3.04 -1.00 0.92 -0.84 -0.25 1.00 0.68 1.00 0.00
|
||||
-3.02 -1.00 0.96 -0.92 -0.13 1.00 0.34 1.00 0.00
|
||||
-3.00 -1.00 1.00 -1.00 -0.00 1.00 0.90 1.00 0.00
|
||||
-2.98 1.00 -0.96 -0.92 0.13 -1.00 0.43 1.00 0.00
|
||||
-2.96 1.00 -0.92 -0.84 0.25 -1.00 0.47 1.00 0.00
|
||||
-2.94 1.00 -0.88 -0.76 0.37 -1.00 0.51 1.00 0.00
|
||||
-2.92 1.00 -0.84 -0.68 0.48 -1.00 0.29 1.00 0.00
|
||||
-2.90 1.00 -0.80 -0.60 0.59 -1.00 0.42 1.00 0.00
|
||||
-2.88 1.00 -0.76 -0.52 0.68 -1.00 0.02 1.00 0.00
|
||||
-2.86 1.00 -0.72 -0.44 0.77 -0.71 0.91 1.00 0.00
|
||||
-2.84 1.00 -0.68 -0.36 0.84 -0.71 0.00 1.00 0.00
|
||||
-2.82 1.00 -0.64 -0.28 0.90 -0.71 0.22 1.00 0.00
|
||||
-2.80 1.00 -0.60 -0.20 0.95 -0.71 0.55 1.00 0.00
|
||||
-2.78 1.00 -0.56 -0.12 0.98 -0.71 0.96 1.00 0.00
|
||||
-2.76 1.00 -0.52 -0.04 1.00 -0.71 0.30 1.00 0.00
|
||||
-2.74 1.00 -0.48 0.04 1.00 -0.43 0.19 1.00 0.00
|
||||
-2.72 1.00 -0.44 0.12 0.98 -0.43 0.62 1.00 0.00
|
||||
-2.70 1.00 -0.40 0.20 0.95 -0.43 0.61 1.00 0.00
|
||||
-2.68 1.00 -0.36 0.28 0.90 -0.43 0.28 1.00 0.00
|
||||
-2.66 1.00 -0.32 0.36 0.84 -0.43 0.85 1.00 0.00
|
||||
-2.64 1.00 -0.28 0.44 0.77 -0.43 0.22 1.00 0.00
|
||||
-2.62 1.00 -0.24 0.52 0.68 -0.14 0.66 1.00 0.00
|
||||
-2.60 1.00 -0.20 0.60 0.59 -0.14 0.62 1.00 0.00
|
||||
-2.58 1.00 -0.16 0.68 0.48 -0.14 0.30 1.00 0.00
|
||||
-2.56 1.00 -0.12 0.76 0.37 -0.14 0.38 1.00 0.00
|
||||
-2.54 1.00 -0.08 0.84 0.25 -0.14 0.00 1.00 0.00
|
||||
-2.52 1.00 -0.04 0.92 0.13 -0.14 0.09 1.00 0.00
|
||||
-2.50 1.00 0.00 1.00 0.00 -0.14 0.56 1.00 0.00
|
||||
-2.48 -1.00 0.04 0.92 -0.13 0.14 0.67 1.00 0.00
|
||||
-2.46 -1.00 0.08 0.84 -0.25 0.14 0.66 1.00 0.00
|
||||
-2.44 -1.00 0.12 0.76 -0.37 0.14 0.15 1.00 0.00
|
||||
-2.42 -1.00 0.16 0.68 -0.48 0.14 0.71 1.00 0.00
|
||||
-2.40 -1.00 0.20 0.60 -0.59 0.14 0.75 1.00 0.00
|
||||
-2.38 -1.00 0.24 0.52 -0.68 0.14 0.13 1.00 0.00
|
||||
-2.36 -1.00 0.28 0.44 -0.77 0.43 0.99 1.00 0.00
|
||||
-2.34 -1.00 0.32 0.36 -0.84 0.43 0.01 1.00 0.00
|
||||
-2.32 -1.00 0.36 0.28 -0.90 0.43 0.92 1.00 0.00
|
||||
-2.30 -1.00 0.40 0.20 -0.95 0.43 0.92 1.00 0.00
|
||||
-2.28 -1.00 0.44 0.12 -0.98 0.43 0.38 1.00 0.00
|
||||
-2.26 -1.00 0.48 0.04 -1.00 0.43 0.87 1.00 0.00
|
||||
-2.24 -1.00 0.52 -0.04 -1.00 0.71 0.42 1.00 0.00
|
||||
-2.22 -1.00 0.56 -0.12 -0.98 0.71 0.88 1.00 0.00
|
||||
-2.20 -1.00 0.60 -0.20 -0.95 0.71 0.71 1.00 0.00
|
||||
-2.18 -1.00 0.64 -0.28 -0.90 0.71 0.97 1.00 0.00
|
||||
-2.16 -1.00 0.68 -0.36 -0.84 0.71 0.27 1.00 0.00
|
||||
-2.14 -1.00 0.72 -0.44 -0.77 0.71 0.94 1.00 0.00
|
||||
-2.12 -1.00 0.76 -0.52 -0.68 1.00 0.92 1.00 0.00
|
||||
-2.10 -1.00 0.80 -0.60 -0.59 1.00 0.02 1.00 0.00
|
||||
-2.08 -1.00 0.84 -0.68 -0.48 1.00 0.26 1.00 0.00
|
||||
-2.06 -1.00 0.88 -0.76 -0.37 1.00 0.54 1.00 0.00
|
||||
-2.04 -1.00 0.92 -0.84 -0.25 1.00 0.93 1.00 0.00
|
||||
-2.02 -1.00 0.96 -0.92 -0.13 1.00 0.25 1.00 0.00
|
||||
-2.00 -1.00 1.00 -1.00 -0.00 1.00 0.77 1.00 0.00
|
||||
-1.98 1.00 -0.96 -0.92 0.13 -1.00 0.71 1.00 0.00
|
||||
-1.96 1.00 -0.92 -0.84 0.25 -1.00 0.86 1.00 0.00
|
||||
-1.94 1.00 -0.88 -0.76 0.37 -1.00 0.15 1.00 0.00
|
||||
-1.92 1.00 -0.84 -0.68 0.48 -1.00 0.80 1.00 0.00
|
||||
-1.90 1.00 -0.80 -0.60 0.59 -1.00 0.17 1.00 0.00
|
||||
-1.88 1.00 -0.76 -0.52 0.68 -1.00 0.18 1.00 0.00
|
||||
-1.86 1.00 -0.72 -0.44 0.77 -0.71 0.54 1.00 0.00
|
||||
-1.84 1.00 -0.68 -0.36 0.84 -0.71 0.13 1.00 0.00
|
||||
-1.82 1.00 -0.64 -0.28 0.90 -0.71 0.71 1.00 0.00
|
||||
-1.80 1.00 -0.60 -0.20 0.95 -0.71 0.24 1.00 0.00
|
||||
-1.78 1.00 -0.56 -0.12 0.98 -0.71 0.73 1.00 0.00
|
||||
-1.76 1.00 -0.52 -0.04 1.00 -0.71 0.08 1.00 0.00
|
||||
-1.74 1.00 -0.48 0.04 1.00 -0.43 0.13 1.00 0.00
|
||||
-1.72 1.00 -0.44 0.12 0.98 -0.43 0.28 1.00 0.00
|
||||
-1.70 1.00 -0.40 0.20 0.95 -0.43 0.20 1.00 0.00
|
||||
-1.68 1.00 -0.36 0.28 0.90 -0.43 0.53 1.00 0.00
|
||||
-1.66 1.00 -0.32 0.36 0.84 -0.43 0.48 1.00 0.00
|
||||
-1.64 1.00 -0.28 0.44 0.77 -0.43 0.38 1.00 0.00
|
||||
-1.62 1.00 -0.24 0.52 0.68 -0.14 0.28 1.00 0.00
|
||||
-1.60 1.00 -0.20 0.60 0.59 -0.14 0.06 1.00 0.00
|
||||
-1.58 1.00 -0.16 0.68 0.48 -0.14 0.84 1.00 0.00
|
||||
-1.56 1.00 -0.12 0.76 0.37 -0.14 0.35 1.00 0.00
|
||||
-1.54 1.00 -0.08 0.84 0.25 -0.14 0.13 1.00 0.00
|
||||
-1.52 1.00 -0.04 0.92 0.13 -0.14 0.51 1.00 0.00
|
||||
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|
||||
2.70 -1.00 0.40 0.20 -0.95 0.43 0.38 1.00 0.00
|
||||
2.72 -1.00 0.44 0.12 -0.98 0.43 0.82 1.00 0.00
|
||||
2.74 -1.00 0.48 0.04 -1.00 0.43 0.92 1.00 0.00
|
||||
2.76 -1.00 0.52 -0.04 -1.00 0.71 0.88 1.00 0.00
|
||||
2.78 -1.00 0.56 -0.12 -0.98 0.71 0.90 1.00 0.00
|
||||
2.80 -1.00 0.60 -0.20 -0.95 0.71 0.48 1.00 0.00
|
||||
2.82 -1.00 0.64 -0.28 -0.90 0.71 0.57 1.00 0.00
|
||||
2.84 -1.00 0.68 -0.36 -0.84 0.71 0.60 1.00 0.00
|
||||
2.86 -1.00 0.72 -0.44 -0.77 0.71 0.49 1.00 0.00
|
||||
2.88 -1.00 0.76 -0.52 -0.68 1.00 0.60 1.00 0.00
|
||||
2.90 -1.00 0.80 -0.60 -0.59 1.00 0.79 1.00 0.00
|
||||
2.92 -1.00 0.84 -0.68 -0.48 1.00 0.35 1.00 0.00
|
||||
2.94 -1.00 0.88 -0.76 -0.37 1.00 0.39 1.00 0.00
|
||||
2.96 -1.00 0.92 -0.84 -0.25 1.00 0.85 1.00 0.00
|
||||
2.98 -1.00 0.96 -0.92 -0.13 1.00 0.84 1.00 0.00
|
||||
3.00 1.00 -1.00 -1.00 0.00 -1.00 0.30 1.00 0.00
|
||||
3.02 1.00 -0.96 -0.92 0.13 -1.00 0.76 1.00 0.00
|
||||
3.04 1.00 -0.92 -0.84 0.25 -1.00 0.07 1.00 0.00
|
||||
3.06 1.00 -0.88 -0.76 0.37 -1.00 0.09 1.00 0.00
|
||||
3.08 1.00 -0.84 -0.68 0.48 -1.00 0.22 1.00 0.00
|
||||
3.10 1.00 -0.80 -0.60 0.59 -1.00 0.86 1.00 0.00
|
||||
3.12 1.00 -0.76 -0.52 0.68 -1.00 0.04 1.00 0.00
|
||||
3.14 1.00 -0.72 -0.44 0.77 -0.71 0.80 1.00 0.00
|
||||
3.16 1.00 -0.68 -0.36 0.84 -0.71 0.83 1.00 0.00
|
||||
3.18 1.00 -0.64 -0.28 0.90 -0.71 0.23 1.00 0.00
|
||||
3.20 1.00 -0.60 -0.20 0.95 -0.71 0.49 1.00 0.00
|
||||
3.22 1.00 -0.56 -0.12 0.98 -0.71 0.77 1.00 0.00
|
||||
3.24 1.00 -0.52 -0.04 1.00 -0.71 0.78 1.00 0.00
|
||||
3.26 1.00 -0.48 0.04 1.00 -0.43 0.35 1.00 0.00
|
||||
3.28 1.00 -0.44 0.12 0.98 -0.43 0.99 1.00 0.00
|
||||
3.30 1.00 -0.40 0.20 0.95 -0.43 0.14 1.00 0.00
|
||||
3.32 1.00 -0.36 0.28 0.90 -0.43 0.05 1.00 0.00
|
||||
3.34 1.00 -0.32 0.36 0.84 -0.43 0.70 1.00 0.00
|
||||
3.36 1.00 -0.28 0.44 0.77 -0.43 0.82 1.00 0.00
|
||||
3.38 1.00 -0.24 0.52 0.68 -0.14 0.62 1.00 0.00
|
||||
3.40 1.00 -0.20 0.60 0.59 -0.14 0.01 1.00 0.00
|
||||
3.42 1.00 -0.16 0.68 0.48 -0.14 0.69 1.00 0.00
|
||||
3.44 1.00 -0.12 0.76 0.37 -0.14 0.19 1.00 0.00
|
||||
3.46 1.00 -0.08 0.84 0.25 -0.14 0.39 1.00 0.00
|
||||
3.48 1.00 -0.04 0.92 0.13 -0.14 0.39 1.00 0.00
|
||||
3.50 -1.00 0.00 1.00 -0.00 0.14 0.46 1.00 0.00
|
||||
3.52 -1.00 0.04 0.92 -0.13 0.14 0.75 1.00 0.00
|
||||
3.54 -1.00 0.08 0.84 -0.25 0.14 0.21 1.00 0.00
|
||||
3.56 -1.00 0.12 0.76 -0.37 0.14 0.85 1.00 0.00
|
||||
3.58 -1.00 0.16 0.68 -0.48 0.14 0.92 1.00 0.00
|
||||
3.60 -1.00 0.20 0.60 -0.59 0.14 0.78 1.00 0.00
|
||||
3.62 -1.00 0.24 0.52 -0.68 0.14 0.41 1.00 0.00
|
||||
3.64 -1.00 0.28 0.44 -0.77 0.43 0.90 1.00 0.00
|
||||
3.66 -1.00 0.32 0.36 -0.84 0.43 0.71 1.00 0.00
|
||||
3.68 -1.00 0.36 0.28 -0.90 0.43 0.94 1.00 0.00
|
||||
3.70 -1.00 0.40 0.20 -0.95 0.43 0.92 1.00 0.00
|
||||
3.72 -1.00 0.44 0.12 -0.98 0.43 0.91 1.00 0.00
|
||||
3.74 -1.00 0.48 0.04 -1.00 0.43 0.79 1.00 0.00
|
||||
3.76 -1.00 0.52 -0.04 -1.00 0.71 0.64 1.00 0.00
|
||||
3.78 -1.00 0.56 -0.12 -0.98 0.71 0.08 1.00 0.00
|
||||
3.80 -1.00 0.60 -0.20 -0.95 0.71 0.49 1.00 0.00
|
||||
3.82 -1.00 0.64 -0.28 -0.90 0.71 0.50 1.00 0.00
|
||||
3.84 -1.00 0.68 -0.36 -0.84 0.71 0.86 1.00 0.00
|
||||
3.86 -1.00 0.72 -0.44 -0.77 0.71 0.61 1.00 0.00
|
||||
3.88 -1.00 0.76 -0.52 -0.68 1.00 0.42 1.00 0.00
|
||||
3.90 -1.00 0.80 -0.60 -0.59 1.00 0.25 1.00 0.00
|
||||
3.92 -1.00 0.84 -0.68 -0.48 1.00 0.06 1.00 0.00
|
||||
3.94 -1.00 0.88 -0.76 -0.37 1.00 0.97 1.00 0.00
|
||||
3.96 -1.00 0.92 -0.84 -0.25 1.00 0.81 1.00 0.00
|
||||
3.98 -1.00 0.96 -0.92 -0.13 1.00 0.57 1.00 0.00
|
||||
|
||||
done...
|
||||
@ -21,6 +21,7 @@ void setup()
|
||||
|
||||
gen.setAmplitude(50);
|
||||
gen.setFrequency(1);
|
||||
gen.setDutyCycle(25);
|
||||
}
|
||||
|
||||
|
||||
@ -29,32 +30,38 @@ void loop()
|
||||
float t = millis() * 0.001;
|
||||
|
||||
// UNCOMMENT WAVES YOU WANT TO SEE
|
||||
// DO NOT FORGET THE '\t' SEPARATOR PRINT
|
||||
// DO NOT FORGET TO PRINT THE '\t' SEPARATOR
|
||||
|
||||
// Serial.print(t, 3);
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.square(t));
|
||||
// Serial.print("\t");
|
||||
Serial.print(80);
|
||||
Serial.print("\t");
|
||||
Serial.print(-80);
|
||||
Serial.print("\t");
|
||||
Serial.print(gen.square(t));
|
||||
Serial.print("\t");
|
||||
// Serial.print(gen.sawtooth(t, 0)); // up /| signal
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.sawtooth(t, 1)); // down |\ signal
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.triangle(t));
|
||||
Serial.print(gen.triangle(t));
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.sinus(t));
|
||||
// Serial.print("\t");
|
||||
Serial.print(gen.stair(t, 16, 0)); // step up
|
||||
Serial.print("\t");
|
||||
Serial.print(gen.stair(t, 16, 1)); // step down
|
||||
Serial.print("\t");
|
||||
// Serial.print(gen.stair(t, 16, 0)); // step up
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.stair(t, 16, 1)); // step down
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.random());
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.random_DC());
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.line());
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen.zero());
|
||||
Serial.println();
|
||||
delay(10);
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -8,7 +8,6 @@
|
||||
// depending on the platform, the range of "smooth" sinus is limited.
|
||||
// other signals are less difficult so have a slightly larger range.
|
||||
// see readme.md for mac frequency table.
|
||||
//
|
||||
|
||||
|
||||
#include "functionGenerator.h"
|
||||
@ -21,6 +20,8 @@ float value = 0;
|
||||
float frequency = 40;
|
||||
float amplitude = 1.0;
|
||||
|
||||
float d = 0;
|
||||
|
||||
// q = square
|
||||
// s = sinus
|
||||
// w = sawtooth
|
||||
@ -91,6 +92,17 @@ void setup()
|
||||
break;
|
||||
case 'a':
|
||||
break;
|
||||
case 'D':
|
||||
d = gen.getDutyCycle();
|
||||
d++;
|
||||
gen.setDutyCycle(d);
|
||||
break;
|
||||
case 'd':
|
||||
d = gen.getDutyCycle();
|
||||
d--;
|
||||
gen.setDutyCycle(d);
|
||||
break;
|
||||
break;
|
||||
case 'q':
|
||||
case 's':
|
||||
case 'w':
|
||||
@ -135,4 +147,3 @@ void loop()
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
@ -0,0 +1,86 @@
|
||||
//
|
||||
// FILE: functionGenerator_double_MCP4725.ino
|
||||
// AUTHOR: Rob Tillaart
|
||||
// PURPOSE: demo function generators
|
||||
// URL: https://github.com/RobTillaart/FunctionGenerator
|
||||
//
|
||||
// depending on the platform, the range of "smooth" sinus is limited.
|
||||
// other signals are less difficult so have a slightly larger range.
|
||||
// see readme.md for mac frequency table.
|
||||
|
||||
|
||||
#include "functionGenerator.h"
|
||||
#include "MCP4725.h"
|
||||
#include "Wire.h"
|
||||
|
||||
|
||||
// two generators
|
||||
funcgen gen1;
|
||||
funcgen gen2;
|
||||
|
||||
// two ADC
|
||||
MCP4725 MCP1(0x63);
|
||||
MCP4725 MCP2(0x64);
|
||||
|
||||
uint32_t count = 0;
|
||||
uint32_t lastTime = 0;
|
||||
uint32_t t = 0;
|
||||
|
||||
void setup()
|
||||
{
|
||||
Serial.begin(230400);
|
||||
Serial.println();
|
||||
Serial.println(__FILE__);
|
||||
Serial.println();
|
||||
|
||||
Wire.begin();
|
||||
MCP1.begin();
|
||||
MCP2.begin();
|
||||
Wire.setClock(100000);
|
||||
|
||||
// if (!MCP1.isConnected())
|
||||
// {
|
||||
// Serial.println("error 1!");
|
||||
// while (1);
|
||||
// }
|
||||
MCP1.setValue(0);
|
||||
|
||||
// if (!MCP2.isConnected())
|
||||
// {
|
||||
// Serial.println("error 2!");
|
||||
// while (1);
|
||||
// }
|
||||
MCP2.setValue(0);
|
||||
|
||||
// set 5 Hz
|
||||
gen1.setAmplitude(1023);
|
||||
gen1.setYShift(1023);
|
||||
gen1.setFrequency(5);
|
||||
|
||||
// set 10 Hz
|
||||
gen2.setAmplitude(1023);
|
||||
gen2.setYShift(1023);
|
||||
gen2.setFrequency(10);
|
||||
gen2.setPhase(0.025);
|
||||
}
|
||||
|
||||
|
||||
void loop()
|
||||
{
|
||||
uint32_t now = micros();
|
||||
if (now - lastTime >= 1000)
|
||||
{
|
||||
lastTime = now;
|
||||
float t = millis() * 0.0001;
|
||||
MCP1.setValue(gen1.square(t));
|
||||
MCP2.setValue(gen2.sinus(t));
|
||||
|
||||
// Serial.print(gen1.square(t));
|
||||
// Serial.print("\t");
|
||||
// Serial.print(gen2.sinus(t));
|
||||
// Serial.println();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// -- END OF FILE --
|
||||
@ -1,11 +1,9 @@
|
||||
//
|
||||
// FILE: functionGenerator.cpp
|
||||
// AUTHOR: Rob Tillaart
|
||||
// VERSION: 0.2.4
|
||||
// VERSION: 0.2.5
|
||||
// PURPOSE: wave form generating functions (use with care)
|
||||
// URL: https://github.com/RobTillaart/FunctionGenerator
|
||||
//
|
||||
// HISTORY: see changelog.md
|
||||
|
||||
|
||||
#include "functionGenerator.h"
|
||||
@ -17,9 +15,14 @@ funcgen::funcgen(float period, float amplitude, float phase, float yShift)
|
||||
setAmplitude(amplitude);
|
||||
setPhase(phase);
|
||||
setYShift(yShift);
|
||||
setDutyCycle(50); // TODO param?
|
||||
}
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////
|
||||
//
|
||||
// CONFIGURATION
|
||||
//
|
||||
void funcgen::setPeriod(float period)
|
||||
{
|
||||
_period = period;
|
||||
@ -30,6 +33,88 @@ void funcgen::setPeriod(float period)
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getPeriod()
|
||||
{
|
||||
return _period;
|
||||
}
|
||||
|
||||
|
||||
void funcgen::setFrequency(float freq)
|
||||
{
|
||||
setPeriod(1.0 / freq);
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getFrequency()
|
||||
{
|
||||
return _freq1;
|
||||
}
|
||||
|
||||
|
||||
void funcgen::setAmplitude(float ampl)
|
||||
{
|
||||
_amplitude = ampl;
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getAmplitude()
|
||||
{
|
||||
return _amplitude;
|
||||
}
|
||||
|
||||
void funcgen::setPhase(float phase)
|
||||
{
|
||||
_phase = phase;
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getPhase()
|
||||
{
|
||||
return _phase;
|
||||
}
|
||||
|
||||
|
||||
void funcgen::setYShift(float yShift)
|
||||
{
|
||||
_yShift = yShift;
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getYShift()
|
||||
{
|
||||
return _yShift;
|
||||
}
|
||||
|
||||
|
||||
void funcgen::setDutyCycle(float dutyCycle)
|
||||
{
|
||||
// negative dutyCycle? => 1-dc? or abs()?
|
||||
if (dutyCycle < 0) _dutyCycle = 0.0;
|
||||
else if (dutyCycle > 100) _dutyCycle = 1.0;
|
||||
else _dutyCycle = dutyCycle * 0.01;
|
||||
}
|
||||
|
||||
|
||||
float funcgen::getDutyCycle()
|
||||
{
|
||||
return _dutyCycle * 100.0;
|
||||
}
|
||||
|
||||
|
||||
void funcgen::setRandomSeed(uint32_t a, uint32_t b)
|
||||
{
|
||||
// prevent zero loops in random() function.
|
||||
if (a == 0) a = 123;
|
||||
if (b == 0) b = 456;
|
||||
_m_w = a;
|
||||
_m_z = b;
|
||||
}
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////
|
||||
//
|
||||
// FUNCTIONS
|
||||
//
|
||||
float funcgen::line()
|
||||
{
|
||||
return _yShift + _amplitude;
|
||||
@ -48,14 +133,14 @@ float funcgen::sawtooth(float t, uint8_t mode)
|
||||
t += _phase;
|
||||
if (t >= 0.0)
|
||||
{
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
t = fmod(t, _period);
|
||||
if (mode == 1) t = _period - t;
|
||||
rv = _amplitude * (-1.0 + t *_freq2);
|
||||
}
|
||||
else
|
||||
{
|
||||
t = -t;
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
t = fmod(t, _period);
|
||||
if (mode == 1) t = _period - t;
|
||||
rv = _amplitude * ( 1.0 - t * _freq2);
|
||||
}
|
||||
@ -72,14 +157,16 @@ float funcgen::triangle(float t)
|
||||
{
|
||||
t = -t;
|
||||
}
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
if ( t * 2 < _period)
|
||||
t = fmod(t, _period);
|
||||
if (t < (_period * _dutyCycle))
|
||||
{
|
||||
rv = _amplitude * (-1.0 + t * _freq4);
|
||||
rv = _amplitude * (-1.0 + t * _freq2 / _dutyCycle);
|
||||
}
|
||||
else
|
||||
{
|
||||
rv = _amplitude * (3.0 - t * _freq4);
|
||||
// mirror math
|
||||
t = _period - t;
|
||||
rv = _amplitude * (-1.0 + t * _freq2 /(1 - _dutyCycle));
|
||||
}
|
||||
rv += _yShift;
|
||||
return rv;
|
||||
@ -92,15 +179,15 @@ float funcgen::square(float t)
|
||||
t += _phase;
|
||||
if (t >= 0)
|
||||
{
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
if ((t + t) < _period) rv = _amplitude;
|
||||
t = fmod(t, _period);
|
||||
if (t < (_period * _dutyCycle)) rv = _amplitude;
|
||||
else rv = -_amplitude;
|
||||
}
|
||||
else
|
||||
{
|
||||
t = -t;
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
if ( t * 2 < _period) rv = -_amplitude;
|
||||
t = fmod(t, _period);
|
||||
if (t < (_period * _dutyCycle)) rv = -_amplitude;
|
||||
else rv = _amplitude;
|
||||
}
|
||||
rv += _yShift;
|
||||
@ -123,13 +210,13 @@ float funcgen::stair(float t, uint16_t steps, uint8_t mode)
|
||||
t += _phase;
|
||||
if (t >= 0)
|
||||
{
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
t = fmod(t, _period);
|
||||
if (mode == 1) t = _period - t;
|
||||
int level = steps * t / _period;
|
||||
return _yShift + _amplitude * (-1.0 + 2.0 * level / (steps - 1));
|
||||
}
|
||||
t = -t;
|
||||
if (t >= _period) t = fmod(t, _period);
|
||||
t = fmod(t, _period);
|
||||
if (mode == 1) t = _period - t;
|
||||
int level = steps * t / _period;
|
||||
return _yShift + _amplitude * (1.0 - 2.0 * level / (steps - 1));
|
||||
@ -138,12 +225,22 @@ float funcgen::stair(float t, uint16_t steps, uint8_t mode)
|
||||
|
||||
float funcgen::random()
|
||||
{
|
||||
// TODO smart reseed needed
|
||||
float rv = _yShift + _amplitude * _random() * 0.2328306436E-9; // div 0xFFFFFFFF
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
// duty cycle variant takes more than twice as much time.
|
||||
float funcgen::random_DC()
|
||||
{
|
||||
static float rv = 0;
|
||||
float next = _yShift + _amplitude * _random() * 0.2328306436E-9; // div 0xFFFFFFFF
|
||||
rv += (next - rv) * _dutyCycle;
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
|
||||
// An example of a simple pseudo-random number generator is the
|
||||
// Multiply-with-carry method invented by George Marsaglia.
|
||||
// two initializers (not null)
|
||||
@ -155,6 +252,7 @@ uint32_t funcgen::_random()
|
||||
}
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////
|
||||
//
|
||||
// INTEGER VERSIONS FOR 8 BIT DAC
|
||||
//
|
||||
@ -198,13 +296,14 @@ uint8_t ifgstr(uint16_t t, uint16_t period = 1000, uint16_t steps = 8)
|
||||
*/
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////
|
||||
//
|
||||
// SIMPLE float ONES
|
||||
//
|
||||
// t = 0..period
|
||||
// period = 0.001 ... 10000 ?
|
||||
/*
|
||||
|
||||
/*
|
||||
float fgsaw(float t, float period = 1.0)
|
||||
{
|
||||
if (t >= 0) return -1.0 + 2 * t / period;
|
||||
@ -250,10 +349,10 @@ float fgstr(float t, float period = 1.0, uint16_t steps = 8)
|
||||
int level = steps * t / period;
|
||||
return 1.0 - 2.0 * level / (steps - 1);
|
||||
}
|
||||
|
||||
*/
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////
|
||||
//
|
||||
// FULL floatS ONES
|
||||
//
|
||||
|
||||
@ -13,15 +13,23 @@ setAmplitude KEYWORD2
|
||||
getAmplitude KEYWORD2
|
||||
setPhase KEYWORD2
|
||||
getPhase KEYWORD2
|
||||
|
||||
setYShift KEYWORD2
|
||||
getYShift KEYWORD2
|
||||
setDutyCycle KEYWORD2
|
||||
getDutyCycle KEYWORD2
|
||||
|
||||
setRandomSeed KEYWORD2
|
||||
|
||||
sawtooth KEYWORD2
|
||||
triangle KEYWORD2
|
||||
square KEYWORD2
|
||||
|
||||
sinus KEYWORD2
|
||||
stair KEYWORD2
|
||||
random KEYWORD2
|
||||
random_DC KEYWORD2
|
||||
|
||||
line KEYWORD2
|
||||
zero KEYWORD2
|
||||
|
||||
|
||||
@ -15,7 +15,7 @@
|
||||
"type": "git",
|
||||
"url": "https://github.com/RobTillaart/FunctionGenerator"
|
||||
},
|
||||
"version": "0.2.4",
|
||||
"version": "0.2.5",
|
||||
"license": "MIT",
|
||||
"frameworks": "arduino",
|
||||
"platforms": "*",
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
name=FunctionGenerator
|
||||
version=0.2.4
|
||||
version=0.2.5
|
||||
author=Rob Tillaart <rob.tillaart@gmail.com>
|
||||
maintainer=Rob Tillaart <rob.tillaart@gmail.com>
|
||||
sentence=Arduino library to generate wave forms (nummeric) for a DAC
|
||||
|
||||
@ -13,7 +13,7 @@ Arduino library to generate (numeric) wave forms for a DAC.
|
||||
|
||||
## Description
|
||||
|
||||
This library presents a class for a function generator in software.
|
||||
This library presents a class for a function generator in **software**.
|
||||
It is typical used to control one or more DAC's.
|
||||
To maximize signal quality one has to apply all (or most) processor power
|
||||
to calculate new values over and over again to get enough resolution.
|
||||
@ -25,119 +25,203 @@ Note: this class generates float values, performance wise this can be optimized,
|
||||
to achieve higher speeds at cost of accuracy / precision.
|
||||
|
||||
|
||||
## Performance
|
||||
#### Performance
|
||||
|
||||
Indication of what performance can be expected (based upon 0.2.1 version).
|
||||
Note that the values need to be transported to a DAC or serial port too.
|
||||
Numbers based on performance example, for one single signal.
|
||||
|
||||
|
||||
| Processor | Clock | Waveform | usec/calls | max freq |
|
||||
|:-------------|---------:|:---------|-----------:|---------:|
|
||||
| Arduino UNO | 16 MHz | sawtooth | 62 | 60 Hz |
|
||||
| Arduino UNO | 16 MHz | triangle | 74 | 50 Hz |
|
||||
| Arduino UNO | 16 MHz | square | 53 | 1000 Hz |
|
||||
| Arduino UNO | 16 MHz | sinus | 164 | 25 Hz |
|
||||
| Arduino UNO | 16 MHz | stair | 81 | 50 Hz |
|
||||
| Arduino UNO | 16 MHz | random | 37 | 1000 Hz |
|
||||
| | | | | |
|
||||
| ESP32 | 240 MHz | sawtooth | 3.8 | 1000 Hz |
|
||||
| ESP32 | 240 MHz | triangle | 3.9 | 1000 Hz |
|
||||
| ESP32 | 240 MHz | square | 2.8 | 1000 Hz |
|
||||
| ESP32 | 240 MHz | sinus | 13.6 | 250 Hz |
|
||||
| ESP32 | 240 MHz | stair | 4.8 | 800 Hz |
|
||||
| ESP32 | 240 MHz | random | 1.3 | 1000 Hz |
|
||||
| Processor | Clock | Waveform | usec/call | max freq | max values/period |
|
||||
|:--------------|----------:|:-----------|------------:|-----------:|--------:|
|
||||
| Arduino UNO | 16 MHz | sawtooth | 62 | 60 Hz | 268 |
|
||||
| Arduino UNO | 16 MHz | triangle | 74 | 50 Hz | 270 |
|
||||
| Arduino UNO | 16 MHz | square | 53 | 1000 Hz | 19 |
|
||||
| Arduino UNO | 16 MHz | sinus | 164 | 25 Hz | 152 |
|
||||
| Arduino UNO | 16 MHz | stair | 81 | 50 Hz | 246 |
|
||||
| Arduino UNO | 16 MHz | random | 37 | 1000 Hz | 27 |
|
||||
| ESP32 | 240 MHz | sawtooth | 3.8 | 1000 Hz | 263 |
|
||||
| ESP32 | 240 MHz | triangle | 3.9 | 1000 Hz | 256 |
|
||||
| ESP32 | 240 MHz | square | 2.8 | 1000 Hz | 357 |
|
||||
| ESP32 | 240 MHz | sinus | 13.6 | 250 Hz | 294 |
|
||||
| ESP32 | 240 MHz | stair | 4.8 | 800 Hz | 260 |
|
||||
| ESP32 | 240 MHz | random | 1.3 | 1000 Hz | 769 |
|
||||
|
||||
|
||||
- assumption minimal 250 samples per period to get a smooth signal.
|
||||
if a rougher signal is OK, higher frequencies are possible.
|
||||
- Assumption minimal around 250 samples per period to get a smooth signal.
|
||||
If a rougher signal is OK, higher frequencies are possible.
|
||||
For **square()** and **random()** less samples per period are often acceptable.
|
||||
- ESP32 can do more calculations however 1000 Hz seems to be a nice
|
||||
upper limit for a software based function generator.
|
||||
- if one wants to control multiple DAC's one need to divide the numbers
|
||||
and round down.
|
||||
- If one needs to control multiple DAC's one should divide the numbers
|
||||
and round down to get an estimate.
|
||||
|
||||
|
||||
Note: hardware function generator https://github.com/RobTillaart/AD985X
|
||||
|
||||
|
||||
Note: 0.2.5 due to duty cycle the triangle and square
|
||||
have become slightly slower.
|
||||
|
||||
| Processor | Clock | Waveform | usec/call | max freq |
|
||||
|:--------------|----------:|:-----------|------------:|-----------:|
|
||||
| Arduino UNO | 16 MHz | triangle | 84 | 50 Hz |
|
||||
| Arduino UNO | 16 MHz | square | 57 | 1000 Hz |
|
||||
| Arduino UNO | 16 MHz | random_DC | 68 | 500 Hz |
|
||||
|
||||
|
||||
#### Accuracy
|
||||
|
||||
If the time parameter **t** grows large, the internal math may have rounding
|
||||
problems after some time. This can and will affect the quality of the output.
|
||||
|
||||
Needs further investigations.
|
||||
|
||||
|
||||
## Interface
|
||||
|
||||
### Constructor
|
||||
```cpp
|
||||
#include "functionGenerator.h"
|
||||
```
|
||||
|
||||
#### Constructor
|
||||
|
||||
- **funcgen(float period = 1.0, float amplitude = 1.0, float phase = 0.0, float yShift = 0.0)**
|
||||
All parameters can be set in the constructor but also later in configuration.
|
||||
All parameters (except duty cycle) can be set in the constructor but also later in configuration.
|
||||
Default dutyCycle is 50%.
|
||||
|
||||
|
||||
### Configuration
|
||||
#### Configuration
|
||||
|
||||
- **void setPeriod(float period = 1.0)** set the period of the wave in seconds.
|
||||
- **float getPeriod()** returns the set period.
|
||||
- **void setFrequency(float frequency = 1.0)** set the frequency of the wave in Hertz (1/s).
|
||||
- **float getFrequency()** returns the set frequency in Hertz.
|
||||
- **void setAmplitude(float amplitude = 1.0)** sets the amplitude of the wave. TODO point to point?
|
||||
Setting the amplitude to 0 gives ?what?
|
||||
- **void setAmplitude(float amplitude = 1.0)** sets the amplitude of the wave.
|
||||
The range is from **-amplitude** to **+amplitude**.
|
||||
Setting the amplitude to 0 gives effectively a zero signal.
|
||||
Setting the amplitude to a negative value effectively inverts the signal.
|
||||
- **float getAmplitude()** returns the set amplitude.
|
||||
- **void setPhase(float phase = 0.0)** shifts the phase of the wave. Will only be noticeable when
|
||||
compared with other waves.
|
||||
- **void setPhase(float phase = 0.0)** shifts the phase of the wave.
|
||||
Will only be noticeable when compared with other waves.
|
||||
Phase is also known as the X- or horizontal shift.
|
||||
- **float getPhase()** returns the set phase.
|
||||
- **void setYShift(float yShift = 0.0)** sets an Y-shift in amplitude, allows to set some zero point.
|
||||
- **void setYShift(float yShift = 0.0)** sets an Y-shift or vertical offset in amplitude.
|
||||
This allows to set e.g. the zero level.
|
||||
- **float getYShift()** returns the set Y-shift.
|
||||
- **void setDutyCycle(float percentage = 100)** sets the duty cycle of the signal.
|
||||
Experimental, not all waveforms have a duty cycle or interpret it differently, see below.
|
||||
Duty cycle must be between 0 and 100% and will be clipped otherwise.
|
||||
- **float getDutyCycle()** returns the set duty cycle.
|
||||
- **void setRandomSeed(uint32_t a, uint32_t b = 314159265)** sets the initial seeds for the
|
||||
(Marsaglia) random number generator. The first is mandatory, the second is optional.
|
||||
|
||||
|
||||
### Wave forms
|
||||
#### Wave forms
|
||||
|
||||
t is time in seconds
|
||||
The variable t == time in seconds.
|
||||
|
||||
- **float sawtooth(float t, uint8_t mode = 0)** mode == 0 (default) ==> sawtooth /|. mode == 1 ==> sawtooth |\.
|
||||
- **float triangle(float t)** triangle form, duty cycle 50%.
|
||||
- **float square(float t)** square wave with duty cycle 50%.
|
||||
- **float sawtooth(float t, uint8_t mode = 0)** mode 0 is default.
|
||||
- mode == 0 ==> sawtooth /|.
|
||||
- mode == 1 ==> sawtooth |\\. Effectively equals inverting the amplitude.
|
||||
- **float triangle(float t)** triangle form, duty cycle default 50%.
|
||||
- **float square(float t)** square wave with duty cycle default 50%.
|
||||
- **float sinus(float t)** sinus wave, has no duty cycle.
|
||||
- **float stair(float t, uint16_t steps = 8, uint8_t mode = 0)** mode = 0 ==> steps up, mode = 1 steps down.
|
||||
- **float random()** noise generation.
|
||||
- **float line()** constant voltage line. Depends on the set YShift and amplitude.
|
||||
- **float stair(float t, uint16_t steps = 8, uint8_t mode = 0)** defaults to 8 steps up.
|
||||
- mode = 0 ==> steps up
|
||||
- mode = 1 ==> steps down. Effectively equals inverting the amplitude.
|
||||
- **float random()** random noise generation.
|
||||
- **float line()** constant voltage line.
|
||||
Height depends on the YShift and amplitude.
|
||||
- **float zero()** constant zero.
|
||||
|
||||
Line() and zero() are functions that can be used to drive a constant voltage from a DAC
|
||||
and can be used to calibrate the generator / DAC combination.
|
||||
The functions **line()** and **zero()** can be used to drive a constant voltage
|
||||
from a DAC and can be used to calibrate the generator / DAC combination.
|
||||
|
||||
|
||||
## Operational
|
||||
#### Duty Cycle
|
||||
|
||||
See examples.
|
||||
Since 0.2.5 the library has **experimental** support for duty cycle.
|
||||
The meaning of duty cycle differs per wave form.
|
||||
Implementation may change in the future.
|
||||
|
||||
In first iteration the following behaviour is implemented:
|
||||
|
||||
- **square()** implements duty cycle in a well known way.
|
||||
At the start of the period the signal goes "HIGH".
|
||||
After duty cycle % of the period the signal goes LOW until the end of the period.
|
||||
- **triangle()** function uses the duty cycle to shift the peak from the
|
||||
begin (0%) to middle (50%) to end (100%) of the period.
|
||||
- **random_DC()** A duty cycle of 0% is no noise 100% is full amplitude noise
|
||||
with respect to previous value.
|
||||
Implemented as a weighed average between new and previous value.
|
||||
Made a separate function as handling the duty cycle slows performance substantial.
|
||||
Initial starts at zero and can be adjusted with **YShift()**.
|
||||
|
||||
|
||||
The other functions need to be investigated what duty cycle means.
|
||||
Current ideas that are **NOT** implemented:
|
||||
|
||||
- **sawtooth()** - move from /|. to /|__ so 0% is a spike, 100% = normal.
|
||||
Think of it as the halve of the triangle wave.
|
||||
- **sinus()** move the two peaks like the triangle (adjusting steepness / freq)??
|
||||
- **stair()** like sawtooth??
|
||||
- **line()** has no period so does not make sense (yet).
|
||||
- **zero()** has no period so does not make sense (yet).
|
||||
|
||||
Feedback and ideas are welcome.
|
||||
|
||||
|
||||
## Future
|
||||
|
||||
|
||||
#### waveforms
|
||||
#### Must
|
||||
|
||||
- square duty-cycle (will be slower!)
|
||||
- triangle duty-cycle (makes sawtooth a special triangle)
|
||||
- trapezium wave (would merge square and triangle and sawtooth)
|
||||
- Bezier curve?
|
||||
- documentation
|
||||
- quality of signals - after substantial time t
|
||||
- max freq per wave form etc.
|
||||
Should this be in the library?
|
||||
|
||||
#### investigate
|
||||
|
||||
- duty-cycle for sinus what does it mean. move peak.
|
||||
#### Should
|
||||
|
||||
- smart reseed needed for random().
|
||||
- initialize random generator with compile time.
|
||||
|
||||
|
||||
#### Could
|
||||
|
||||
- waves
|
||||
- trapezium wave (could merge square and triangle and sawtooth)
|
||||
- white noise, pink noise etc.
|
||||
- investigate algorithms for performance gains (DAC specific values 10-12-16 bit)
|
||||
- Amplitude modulation ?
|
||||
- external clock to synchronize two or more sw function generators.
|
||||
- RC function curve.
|
||||
- heartbeat curve?
|
||||
- record a signal and play back
|
||||
|
||||
#### misc
|
||||
|
||||
- stand-alone functions in separate .h?
|
||||
- mapping to voltage function.
|
||||
- external clock to synchronize two or more software function generators.
|
||||
- stand-alone functions in separate .h
|
||||
- check for synergy with https://github.com/RobTillaart/AD985X
|
||||
- investigate performance.
|
||||
- algorithms for DAC specific gains e.g. 10-12-16 bit.
|
||||
- improve performance sin() lookup table.
|
||||
- add float variable for ```_perDC = _period * _dutyCycle```
|
||||
- do we need **freq4** ? not since DC.
|
||||
|
||||
#### examples
|
||||
|
||||
- example ESP32 version as separate task...
|
||||
#### Examples
|
||||
|
||||
- Amplitude modulation ?
|
||||
- heartbeat curve?
|
||||
- example ESP32 version as separate task.
|
||||
- example with DAC. 8 12 16 bit.
|
||||
- example with potentiometers for 4 parameters
|
||||
|
||||
#### Wont
|
||||
|
||||
|
||||
- investigate duty cycle for waveforms
|
||||
- Derived class for the duty cycle variants? or functions!
|
||||
- **float squareDC()** performance (loss)
|
||||
- **float triangleDC()**
|
||||
- **float sawtoothDC()**
|
||||
- **float sinusDC()** duty-cycle for sinus what does it mean.
|
||||
- ==> move peaks, two half sinus with diff frequency
|
||||
- **float stairDC()**
|
||||
- Bezier curve? (too complex)
|
||||
- record a signal and play back ==> separate class
|
||||
|
||||
@ -33,6 +33,7 @@ unittest_setup()
|
||||
fprintf(stderr, "FUNCTIONGENERATOR_LIB_VERSION: %s\n", (char*) FUNCTIONGENERATOR_LIB_VERSION);
|
||||
}
|
||||
|
||||
|
||||
unittest_teardown()
|
||||
{
|
||||
}
|
||||
@ -46,8 +47,10 @@ unittest(test_constructor)
|
||||
assertEqualFloat(1, gen.getPeriod(), 0.0001);
|
||||
assertEqualFloat(1, gen.getFrequency(), 0.0001);
|
||||
assertEqualFloat(1, gen.getAmplitude(), 0.0001);
|
||||
|
||||
assertEqualFloat(0, gen.getPhase(), 0.0001);
|
||||
assertEqualFloat(0, gen.getYShift(), 0.0001);
|
||||
assertEqualFloat(50, gen.getDutyCycle(), 0.0001);
|
||||
}
|
||||
|
||||
|
||||
@ -60,8 +63,10 @@ unittest(test_constructor_param)
|
||||
assertEqualFloat(4.00, gen.getPeriod(), 0.0001);
|
||||
assertEqualFloat(0.25, gen.getFrequency(), 0.0001);
|
||||
assertEqualFloat(2.50, gen.getAmplitude(), 0.0001);
|
||||
|
||||
assertEqualFloat(0.33, gen.getPhase(), 0.0001);
|
||||
assertEqualFloat(-0.5, gen.getYShift(), 0.0001);
|
||||
assertEqualFloat(50, gen.getDutyCycle(), 0.0001);
|
||||
}
|
||||
|
||||
|
||||
@ -85,6 +90,9 @@ unittest(test_set_get_param)
|
||||
|
||||
gen.setYShift(6.89);
|
||||
assertEqualFloat(6.89, gen.getYShift(), 0.0001);
|
||||
|
||||
gen.setDutyCycle(14.28);
|
||||
assertEqualFloat(14.28, gen.getDutyCycle(), 0.0001);
|
||||
}
|
||||
|
||||
|
||||
@ -112,6 +120,9 @@ unittest(test_line_zero)
|
||||
TODO wave forms 6x ?
|
||||
*/
|
||||
|
||||
|
||||
unittest_main()
|
||||
|
||||
// --------
|
||||
|
||||
// -- END OF FILE --
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user