HeartRateAlgorithm.h
Arduino/HeartRateAlgorithm.h
#ifndef HEARTRATE_ALGORITHM_H
#define HEARTRATE_ALGORITHM_H
#include <stdint.h>
#define HR_ALGORITHM_BUFFER_SIZE 100
#define HR_ALGORITHM_MIN_PEAK_DISTANCE 30 // Minimum samples between peaks
class HeartRateAlgorithm {
public:
HeartRateAlgorithm();
void addSample(uint32_t irValue);
uint8_t getHeartRate();
bool isDataReady();
void reset();
private:
uint32_t _buffer[HR_ALGORITHM_BUFFER_SIZE];
uint8_t _bufferIndex;
bool _dataReady;
uint32_t _lastPeakTime;
uint8_t _peakCount;
uint32_t _peakIntervals[10];
uint8_t _intervalIndex;
bool detectPeak(uint32_t value, uint32_t prevValue, uint32_t nextValue);
uint32_t calculateAverage();
};
#endif
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