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61 lines
1.1 KiB
C++
61 lines
1.1 KiB
C++
#pragma once
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//
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// FILE: DMM.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.3
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// DATE: 2022-12-19
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// PURPOSE: Library for a DMM class for Arduino.
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// URL: https://github.com/RobTillaart/DMM
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#include "Arduino.h"
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#define DMM_LIB_VERSION (F("0.1.3"))
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class DMM
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{
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public:
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DMM();
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void begin(uint8_t pin, float maxVoltage, uint16_t maxSteps);
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// CALIBRATION
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void setMaxVoltage(float maxVoltage);
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float getMaxVoltage();
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// GAIN e.g. due to voltage divider
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// a 25V to 5V divider has a factor = 5.
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void setGain(float factor = 1.0);
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float getGain();
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// READ VOLTAGE
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float readVolts(uint8_t times = 1);
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float readMilliVolts(uint8_t times = 1);
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float readNoise(uint8_t times = 1);
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// READ OHM
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void setReferenceR(float ohm);
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float readOhm(uint8_t times = 1);
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float readKiloOhm(uint8_t times = 1);
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private:
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uint8_t _pin = 14; // A0;
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float _maxVoltage = 5.0;
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uint16_t _maxSteps = 1023;
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float _voltageStep = _maxVoltage/_maxSteps;
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float _gain = 1.0;
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float _ReferenceR = 0;
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};
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// -- END OF FILE --
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