Arduino Uno I2C две проблемы с подключением датчиков

Я работал над попыткой заставить MAXREFDES#117 PPG и акселерометр LIS3DH работать вместе. Я изменяю образец кода, найденный здесь, чтобы сделать это:

https://github.com/MaximIntegratedRefDesTeam/RD117_ARDUINO

Однако, когда я добавляю строку lis.begin(0x18) в код PPG, код перестает работать правильно. Ошибки нет, и единственное, что будет выводиться на последовательный монитор-это “LIS”. Я получил акселерометр для запуска с помощью acceldemo и датчик PPG работает с помощью кода из GitHub (выше), поэтому я не думаю, что это проблема с подключением. Я не совсем уверен, в чем проблема, и был бы очень признателен за помощь.

//PPG

#include <Arduino.h>
#include "algorithm.h"
#include "max30102.h"

//Accelerometer

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_LIS3DH.h>
#include <Adafruit_Sensor.h>

#define MAX_BRIGHTNESS 255

#if defined(ARDUINO_AVR_UNO)
//Arduino Uno doesn't have enough SRAM to store 100 samples of IR led data and red led data in 32-bit format
//To solve this problem, 16-bit MSB of the sampled data will be truncated.  Samples become 16-bit data.
uint16_t aun_ir_buffer[100]; //infrared LED sensor data
uint16_t aun_red_buffer[100];  //red LED sensor data
#else
uint32_t aun_ir_buffer[100]; //infrared LED sensor data
uint32_t aun_red_buffer[100];  //red LED sensor data
#endif
int32_t n_ir_buffer_length; //data length
int32_t n_spo2;  //SPO2 value
int8_t ch_spo2_valid;  //indicator to show if the SPO2 calculation is valid
int32_t n_heart_rate; //heart rate value
int8_t  ch_hr_valid;  //indicator to show if the heart rate calculation is valid
uint8_t uch_dummy;

 

Adafruit_LIS3DH lis = Adafruit_LIS3DH();


// the setup routine runs once when you press reset:
void setup() {
   // initialize serial communication at 115200 bits per second:
   Serial.begin(115200);
   while (!Serial) delay(10);     // will pause Zero, Leonardo, etc until      serial console open

   Serial.println("LIS3DH initializing");
   lis.begin(0x18);
   Serial.println("LIS3DH initialized!");

   maxim_max30102_reset(); //resets the MAX30102
   pinMode(10, INPUT);  //pin D10 connects to the interrupt output pin of the MAX30102

   delay(1000);
   maxim_max30102_read_reg(REG_INTR_STATUS_1,&uch_dummy);  //Reads/clears  the interrupt status register

   while(Serial.available()==0)  //wait until user presses a key
   {

      Serial.write(27);       // ESC command
      Serial.print(F("[2J"));    // clear screen command
      Serial.println(F("Press any key to start conversion"));
      delay(1000);

   }

   uch_dummy=Serial.read();
   maxim_max30102_init();  //initialize the MAX30102
}

 

// the loop routine runs over and over again forever:

void loop() {
  uint32_t un_min, un_max, un_prev_data, un_brightness;  //variables to calculate the on-board LED brightness that reflects the heartbeats
  int32_t i;
  float f_temp;
  
  un_brightness=0;
  un_min=0x3FFFF;
  un_max=0;
  
  n_ir_buffer_length=100;  //buffer length of 100 stores 4 seconds of samples running at 25sps

  //read the first 100 samples, and determine the signal range
  for(i=0;i<n_ir_buffer_length;i++)
  {
    while(digitalRead(10)==1);  //wait until the interrupt pin asserts
    maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));  //read from MAX30102 FIFO
    
    if(un_min>aun_red_buffer[i])
      un_min=aun_red_buffer[i];  //update signal min
    if(un_max<aun_red_buffer[i])
      un_max=aun_red_buffer[i];  //update signal max
    Serial.print(F("red="));
    Serial.print(aun_red_buffer[i], DEC);
    Serial.print(F(", ir="));
    Serial.println(aun_ir_buffer[i], DEC);
  }
  
  un_prev_data=aun_red_buffer[i];

  //calculate heart rate and SpO2 after first 100 samples (first 4 seconds of samples)
  maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_spo2, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid); 
  
  //Continuously taking samples from MAX30102.  Heart rate and SpO2 are calculated every 1 second
  while(1)
  {
    i=0;
    un_min=0x3FFFF;
    un_max=0;

    //dumping the first 25 sets of samples in the memory and shift the last 75 sets of samples to the top
    for(i=25;i<100;i++)
    {
      aun_red_buffer[i-25]=aun_red_buffer[i];
      aun_ir_buffer[i-25]=aun_ir_buffer[i];

      //update the signal min and max
      if(un_min>aun_red_buffer[i])
        un_min=aun_red_buffer[i];
      if(un_max<aun_red_buffer[i])
        un_max=aun_red_buffer[i];
    }

    //take 25 sets of samples before calculating the heart rate.
    for(i=75;i<100;i++)
    {
      un_prev_data=aun_red_buffer[i-1];
      while(digitalRead(10)==1);
      digitalWrite(9, !digitalRead(9));
      maxim_max30102_read_fifo((aun_red_buffer+i), (aun_ir_buffer+i));

      //calculate the brightness of the LED
      if(aun_red_buffer[i]>un_prev_data)
      {
        f_temp=aun_red_buffer[i]-un_prev_data;
        f_temp/=(un_max-un_min);
        f_temp*=MAX_BRIGHTNESS;
        f_temp=un_brightness-f_temp;
        if(f_temp<0)
          un_brightness=0;
        else
          un_brightness=(int)f_temp;
      }
      else
      {
        f_temp=un_prev_data-aun_red_buffer[i];
        f_temp/=(un_max-un_min);
        f_temp*=MAX_BRIGHTNESS;
        un_brightness+=(int)f_temp;
        if(un_brightness>MAX_BRIGHTNESS)
          un_brightness=MAX_BRIGHTNESS;
      }
#if defined(ARDUINO_AVR_LILYPAD_USB)  
      analogWrite(13, un_brightness);
#endif

#if defined(ARDUINO_AVR_FLORA8)
      LED.setPixelColor(0, un_brightness/BRIGHTNESS_DIVISOR, 0, 0);
      LED.show();
#endif

      //send samples and calculation result to terminal program through UART
      Serial.print(F("red="));
      Serial.print(aun_red_buffer[i], DEC);
      Serial.print(F(", ir="));
      Serial.print(aun_ir_buffer[i], DEC);
      
      Serial.print(F(", HR="));
      Serial.print(n_heart_rate, DEC);
      
      Serial.print(F(", HRvalid="));
      Serial.print(ch_hr_valid, DEC);
      
      Serial.print(F(", SPO2="));
      Serial.print(n_spo2, DEC);

      Serial.print(F(", SPO2Valid="));
      Serial.println(ch_spo2_valid, DEC);
    }
    maxim_heart_rate_and_oxygen_saturation(aun_ir_buffer, n_ir_buffer_length, aun_red_buffer, &n_spo2, &ch_spo2_valid, &n_heart_rate, &ch_hr_valid); 
  }
}

Вот картина того, как подключены два датчика: