写一个max30102的使用代码

以下是一个基础的max30102使用代码，您可以根据自己的需求进行修改：

#include <Wire.h>
#include "MAX30105.h"
#include "heartRate.h"

#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3);    // 软串口引脚2为RX, 3为TX

MAX30105 particleSensor;

const byte RATE_SIZE = 4;        // 心率平均滤波器的大小
byte rates[RATE_SIZE];          
byte rateDropCounter = 0;
float lastReading=0;
long lastBeat = 0;               
float beatsPerMinute;
int beatAvg;

void setup()
{
  mySerial.begin(9600);           // 初始化软串口
  Serial.begin(115200);          // 初始化串口
  pinMode(4, OUTPUT);            // 设置PWM输出引脚
  Serial.println("Initializing...");
 
  // Initialise the MAX30105 Particle Sensor
  particleSensor.begin(Wire, I2C_SPEED_FAST);
  particleSensor.setup();
 
  //读取当前传感器版本号
  uint8_t revID = particleSensor.getRevisionID();
  Serial.print("Revision ID: ");
  Serial.println(revID, HEX);
}

void loop()
{
  long irValue = particleSensor.getIR();            //读取红外数值
  float irValuef = irValue;
  lastReading = irValuef;                           //记录每次红外数值
  
  //滤波器，每4个数取平均值
  rates[rateDropCounter++] = irValue; 
  if (rateDropCounter == RATE_SIZE) {
    rateDropCounter = 0;           
    
    float avg = 0;
    for (byte i = 0 ; i < RATE_SIZE ; i++)
      avg += rates[i];
    avg /= RATE_SIZE;
  
    beatsPerMinute = 60 / ((millis() - lastBeat) / 1000.0);
    lastBeat = millis();
  
    //输出是否检测到脉冲和平均心率
    if(heartRateFound() && doFiltering(averageDCEstimator(irValue))){
      Serial.print(beatsPerMinute, 1);
      Serial.print(",");
      Serial.print(irValue, 1);
      Serial.print(",");
      Serial.print(avg, 1);
      Serial.println("");
      mySerial.print(beatsPerMinute, 1);
      mySerial.print(",");
      mySerial.print(irValue, 1);
      mySerial.print(",");
      mySerial.print(avg, 1);
      mySerial.println("");
      analogWrite(4, 255);   //输出PWM信号
    }else{
      Serial.print("No Heartbeat detected");
      Serial.println("");
      mySerial.print("No Heartbeat detected");
      mySerial.println("");
      analogWrite(4, 0);   //如果没有检测到脉冲，则PWM输出0
    }
    lastReading = 0;
  }
}