/* FocusPulse Basic Sketch */
#include <PulseSensorPlayground.h>

const int PulseWire = 0; // A0 Pin
int Threshold = 550;

PulseSensorPlayground pulseSensor;

void setup() {
  Serial.begin(9600);
  pulseSensor.analogInput(PulseWire);
  pulseSensor.setThreshold(Threshold);
  pulseSensor.begin();
}

void loop() {
  int myIBI = pulseSensor.getIBI();
  
  if (pulseSensor.sawStartOfBeat()) {
    // HRV 계산 (예시)
    int myHRV = abs(myIBI - 600) / 2; 
    
    Serial.print(myIBI);
    Serial.print(",");
    Serial.println(myHRV);
  }
  
  delay(20);
}