29 lines
598 B
C++
29 lines
598 B
C++
#include "Thermometer.h"
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using namespace nsThermometer;
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const float INVALID_TEMPERATURE = -300.0;
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Thermometer::Thermometer() {
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}
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void Thermometer::begin(int eepromAddr) {
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m_eepromAddr = eepromAddr;
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m_lastSmoothedTemperature = INVALID_TEMPERATURE;
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m_alpha = 0.1;
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}
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void Thermometer::exec(float r) {
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temperatureRaw = (r / PT1000_R0 - 1) / PT1000_Coeff;
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if (m_lastSmoothedTemperature == INVALID_TEMPERATURE) {
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temperature = temperatureRaw;
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} else {
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temperature = m_alpha * temperatureRaw + (1 - m_alpha) * m_lastSmoothedTemperature;
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}
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m_lastSmoothedTemperature = temperature;
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}
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