20 lines
454 B
C++
20 lines
454 B
C++
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#include "thermistor.hpp"
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#include <math.h>
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double Thermistor::getResistance(double adcSample)
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{
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return SERIES_RESISTOR * adcSample / (1023 - adcSample);
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}
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double Thermistor::getTemperature(double resistance)
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{
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double steinhart = resistance / THERMISTOR_NOMINAL;
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steinhart = log(steinhart);
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steinhart /= BETA_COEFFICIENT;
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steinhart += 1.0 / (NOMINAL_TEMPERATURE + 273.15);
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steinhart = 1.0 / steinhart;
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steinhart -= 273.15;
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return steinhart;
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}
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