Heart rate code for Max30102 and ESP32 is showing zero Avg beats= 0
attached the execution.
#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include "MAX30105.h" //sparkfun MAX3010X library
#include "heartRate.h"
SimpleTimer timer;
MAX30105 particleSensor;
const byte RATE_SIZE = 4; //Increase this for more averaging. 4 is good.
byte rates[RATE_SIZE]; //Array of heart rates
byte rateSpot = 0;
long lastBeat = 0; //Time at which the last beat occurred
float beatsPerMinute;
int beatAvg;
char auth[] = "fIGPsYeI0rf2DWG6FAPXdf-NGuhaF0Fe";
char ssid[] = "vivo 1713";
char pass[] = "fab123456";
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println("Initializing...");
Blynk.begin(auth, ssid, pass);
// Initialize sensor
if (!particleSensor.begin(Wire, I2C_SPEED_FAST)) //Use default I2C port, 400kHz speed
{
Serial.println("MAX30105 was not found. Please check wiring/power. ");
while (1);
}
Serial.println("Place your index finger on the sensor with steady pressure.");
particleSensor.setup(); //Configure sensor with default settings
particleSensor.setPulseAmplitudeRed(0x0A); //Turn Red LED to low to indicate sensor is running
particleSensor.setPulseAmplitudeGreen(0); //Turn off Green LED
timer.setInterval(100, HR);
}
void HR(){
long irValue = particleSensor.getIR();
if (checkForBeat(irValue) == true)
{
//We sensed a beat!
long delta = millis() - lastBeat;
lastBeat = millis();
beatsPerMinute = 60 / (delta / 1000.0);
if (beatsPerMinute < 255 && beatsPerMinute > 20)
{
rates[rateSpot++] = (byte)beatsPerMinute; //Store this reading in the array
rateSpot %= RATE_SIZE; //Wrap variable
//Take average of readings
beatAvg = 0;
for (byte x = 0 ; x < RATE_SIZE ; x++)
beatAvg += rates[x];
beatAvg /= RATE_SIZE;
}
}
Serial.print("IR=");
Serial.print(irValue);
Serial.print(", BPM=");
Serial.print(beatsPerMinute);
Serial.print(", Avg BPM=");
Serial.print(beatAvg);
Blynk.virtualWrite(V5, beatAvg);
if (irValue < 50000)
Serial.print(" No finger?");
Serial.println();
}
void loop() {
Blynk.run();
timer.run(); // Initiates SimpleTimer
}
Execution: