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#include <Wire.h>
#include "MAX30100_PulseOximeter.h"
#define REPORTING_PERIOD_MS 1000
PulseOximeter pox;
uint32_t tsLastReport = 0;
void onBeatDetected() {
Serial.println("Beat!");
}
// Define the struct for holding heart rate and SpO2 values
struct HeartRateData {
float BPM;
float SpO2;
};
// Declare the heart_rate function
HeartRateData heart_rate();
void setup() {
Serial.begin(115200);
Serial.print("Initializing pulse oximeter..");
if (!pox.begin()) {
Serial.println("FAILED");
for (;;);
} else {
Serial.println("SUCCESS");
}
pox.setOnBeatDetectedCallback(onBeatDetected);
}
void loop() {
HeartRateData data = heart_rate();
if (millis() - tsLastReport > REPORTING_PERIOD_MS) {
Serial.print("Heart rate: ");
Serial.print(data.BPM);
Serial.print(" bpm / SpO2: ");
Serial.print(data.SpO2);
Serial.println(" %");
tsLastReport = millis();
}
}
HeartRateData heart_rate() {
pox.update();
HeartRateData data;
data.BPM = pox.getHeartRate();
data.SpO2 = pox.getSpO2();
return data;
}
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